/* roulang page: index */
:root {
            --ink: #171b19;
            --ink-soft: #222824;
            --panel: #f2f3ec;
            --panel-strong: #e7eadf;
            --paper: #fbfcf7;
            --lime: #c9f45a;
            --lime-deep: #9bcf2e;
            --coral: #e8785f;
            --text: #202622;
            --muted: #69736b;
            --line: rgba(32, 38, 34, .13);
            --line-dark: rgba(255,255,255,.14);
            --white: #fffef8;
            --shadow: 0 18px 48px rgba(19, 27, 22, .12);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --container: 1220px;
            --ease: 220ms ease;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--paper);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        button, input { font: inherit; }
        button { cursor: pointer; }
        img { display: block; max-width: 100%; }
        :focus-visible {
            outline: 3px solid var(--lime-deep);
            outline-offset: 4px;
        }
        .container {
            width: min(var(--container), calc(100% - 64px));
            margin: 0 auto;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--lime);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .14em;
            text-transform: uppercase;
        }
        .eyebrow::before {
            content: "";
            width: 24px;
            height: 2px;
            background: currentColor;
        }
        .section {
            padding: 104px 0;
        }
        .section-head {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 28px;
            margin-bottom: 38px;
        }
        .section-head h2 {
            max-width: 680px;
            margin: 10px 0 0;
            font-size: clamp(30px, 4vw, 48px);
            line-height: 1.16;
            letter-spacing: -.045em;
        }
        .section-head p {
            max-width: 390px;
            margin: 0;
            color: var(--muted);
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--text);
            font-weight: 800;
            white-space: nowrap;
            transition: color var(--ease), gap var(--ease);
        }
        .text-link span { color: var(--coral); font-size: 20px; }
        .text-link:hover { color: var(--lime-deep); gap: 14px; }

        .site-header {
            position: relative;
            z-index: 20;
            background: var(--ink);
            color: var(--white);
        }
        .header-inner {
            min-height: 82px;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: 250px;
            font-weight: 900;
            letter-spacing: -.035em;
        }
        .brand-mark {
            position: relative;
            width: 34px;
            height: 34px;
            flex: 0 0 34px;
            background: var(--lime);
            border-radius: 9px 15px 9px 15px;
            transform: rotate(-8deg);
        }
        .brand-mark::before,
        .brand-mark::after {
            content: "";
            position: absolute;
            background: var(--ink);
        }
        .brand-mark::before { width: 16px; height: 4px; top: 9px; left: 9px; }
        .brand-mark::after { width: 10px; height: 4px; top: 18px; left: 9px; }
        .brand-name { font-size: 17px; line-height: 1.2; }
        .brand-name small {
            display: block;
            color: #9fa9a0;
            font-size: 10px;
            font-weight: 600;
            letter-spacing: .08em;
            margin-top: 3px;
        }
        .main-nav {
            display: flex;
            align-items: stretch;
            gap: 4px;
            margin-left: auto;
        }
        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 82px;
            padding: 0 13px;
            color: #c6cdc7;
            font-size: 14px;
            font-weight: 700;
            transition: color var(--ease);
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            right: 13px;
            bottom: 17px;
            left: 13px;
            height: 3px;
            background: var(--lime);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--ease);
        }
        .main-nav a:hover,
        .main-nav a.active { color: var(--white); }
        .main-nav a:hover::after,
        .main-nav a.active::after { transform: scaleX(1); }
        .header-cta,
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 20px;
            border: 1px solid transparent;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 900;
            transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease), box-shadow var(--ease);
        }
        .header-cta {
            color: var(--ink);
            background: var(--lime);
            white-space: nowrap;
        }
        .header-cta:hover,
        .btn-primary:hover {
            background: #ddff81;
            transform: translateY(-2px);
            box-shadow: 0 9px 22px rgba(201,244,90,.2);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            color: var(--white);
            background: transparent;
            border: 1px solid var(--line-dark);
            border-radius: 9px;
        }
        .notice-bar {
            min-height: 34px;
            display: flex;
            align-items: center;
            background: #242b26;
            color: #b6c0b8;
            font-size: 12px;
        }
        .notice-bar .container {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .notice-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--coral);
            box-shadow: 0 0 0 4px rgba(232,120,95,.12);
        }

        .hero {
            position: relative;
            overflow: hidden;
            padding: 92px 0 108px;
            color: var(--white);
            background:
                linear-gradient(90deg, rgba(23,27,25,.98) 0%, rgba(23,27,25,.95) 48%, rgba(23,27,25,.74) 100%),
                radial-gradient(circle at 80% 20%, rgba(201,244,90,.18), transparent 31%),
                var(--ink);
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            opacity: .2;
            background-image: linear-gradient(rgba(201,244,90,.18) 1px, transparent 1px), linear-gradient(90deg, rgba(201,244,90,.18) 1px, transparent 1px);
            background-size: 44px 44px;
            mask-image: linear-gradient(90deg, #000, transparent 80%);
        }
        .hero::after {
            content: "";
            position: absolute;
            width: 440px;
            height: 440px;
            right: -120px;
            bottom: -210px;
            border: 1px solid rgba(201,244,90,.26);
            border-radius: 50%;
            box-shadow: 0 0 0 38px rgba(201,244,90,.04), 0 0 0 76px rgba(201,244,90,.03);
        }
        .hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr);
            gap: 72px;
            align-items: center;
        }
        .hero-copy h1 {
            max-width: 700px;
            margin: 20px 0 22px;
            font-size: clamp(38px, 5.4vw, 70px);
            line-height: 1.08;
            letter-spacing: -.065em;
        }
        .hero-copy h1 em {
            color: var(--lime);
            font-style: normal;
        }
        .hero-copy p {
            max-width: 640px;
            margin: 0;
            color: #c6cec6;
            font-size: 18px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 13px;
            margin-top: 32px;
        }
        .btn-primary { color: var(--ink); background: var(--lime); }
        .btn-secondary { color: var(--white); background: transparent; border-color: rgba(255,255,255,.28); }
        .btn-secondary:hover { border-color: var(--lime); color: var(--lime); transform: translateY(-2px); }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
            margin-top: 36px;
        }
        .hero-tag {
            padding: 6px 11px;
            color: #b8c1b9;
            border: 1px solid rgba(255,255,255,.15);
            border-radius: 99px;
            font-size: 12px;
        }
        .hero-visual {
            position: relative;
            min-height: 410px;
        }
        .orbit {
            position: absolute;
            top: 20px;
            right: 15px;
            width: 385px;
            height: 385px;
            border: 1px solid rgba(201,244,90,.3);
            border-radius: 50%;
        }
        .orbit::before {
            content: "";
            position: absolute;
            inset: 42px;
            border: 1px dashed rgba(201,244,90,.26);
            border-radius: 50%;
        }
        .app-board {
            position: absolute;
            top: 47px;
            right: 68px;
            width: 292px;
            min-height: 350px;
            padding: 21px;
            color: var(--text);
            background: var(--panel);
            border: 8px solid #303832;
            border-radius: 27px;
            box-shadow: 22px 25px 0 rgba(0,0,0,.18), var(--shadow);
            transform: rotate(4deg);
        }
        .app-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
        .app-top strong { font-size: 14px; }
        .app-signal { display: flex; gap: 4px; align-items: end; }
        .app-signal i { display: block; width: 4px; background: var(--lime-deep); border-radius: 2px; }
        .app-signal i:nth-child(1) { height: 6px; }
        .app-signal i:nth-child(2) { height: 10px; }
        .app-signal i:nth-child(3) { height: 14px; }
        .app-feature {
            min-height: 128px;
            padding: 17px;
            color: var(--ink);
            background: var(--lime);
            border-radius: 15px;
        }
        .app-feature small { font-size: 10px; font-weight: 900; letter-spacing: .1em; }
        .app-feature h3 { margin: 21px 0 5px; font-size: 24px; line-height: 1.1; }
        .app-feature p { margin: 0; font-size: 11px; }
        .app-list { margin-top: 16px; }
        .app-row {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 0;
            border-bottom: 1px solid var(--line);
            font-size: 12px;
            font-weight: 800;
        }
        .app-row b {
            width: 23px;
            height: 23px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: var(--white);
            border-radius: 7px;
            font-size: 11px;
        }
        .app-row span { margin-left: auto; color: var(--muted); font-size: 11px; }
        .version-badge {
            position: absolute;
            right: -49px;
            bottom: 62px;
            padding: 11px 14px;
            color: var(--ink);
            background: var(--white);
            border-left: 4px solid var(--coral);
            box-shadow: var(--shadow);
            font-size: 12px;
            font-weight: 900;
            transform: rotate(-7deg);
        }

        .quick-section { padding: 30px 0 15px; background: var(--paper); }
        .quick-grid {
            display: grid;
            grid-template-columns: 1.2fr .95fr 1fr .9fr;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .quick-item {
            position: relative;
            display: flex;
            align-items: center;
            gap: 16px;
            min-height: 105px;
            padding: 18px 22px;
            border-right: 1px solid var(--line);
            transition: background var(--ease), padding var(--ease);
        }
        .quick-item:last-child { border-right: 0; }
        .quick-item:hover { padding-left: 27px; background: var(--panel); }
        .quick-icon {
            width: 40px;
            height: 40px;
            display: grid;
            place-items: center;
            flex: 0 0 40px;
            color: var(--ink);
            background: var(--lime);
            border-radius: 11px;
            font-size: 18px;
            font-weight: 900;
        }
        .quick-item:nth-child(2) .quick-icon { background: #d8dfd2; }
        .quick-item:nth-child(3) .quick-icon { background: #f1c5a9; }
        .quick-item:nth-child(4) .quick-icon { background: #d7d6f0; }
        .quick-item h3 { margin: 0; font-size: 15px; }
        .quick-item p { margin: 3px 0 0; color: var(--muted); font-size: 12px; line-height: 1.45; }
        .quick-arrow { margin-left: auto; color: var(--coral); font-size: 22px; }

        .news-section { background: var(--panel); }
        .news-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
            gap: 24px;
        }
        .featured-news {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 420px;
            padding: 30px;
            color: var(--white);
            background: var(--ink);
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
        }
        .featured-news::after {
            content: "J9";
            position: absolute;
            right: 19px;
            bottom: -33px;
            color: rgba(201,244,90,.09);
            font-size: 180px;
            font-weight: 900;
            line-height: 1;
        }
        .featured-news .label-row { position: relative; z-index: 1; display: flex; justify-content: space-between; }
        .badge {
            display: inline-flex;
            align-items: center;
            min-height: 25px;
            padding: 0 9px;
            color: var(--ink);
            background: var(--lime);
            border-radius: 6px;
            font-size: 11px;
            font-weight: 900;
        }
        .badge.coral { color: #fff; background: var(--coral); }
        .featured-news-content { position: relative; z-index: 1; max-width: 620px; }
        .featured-news h3 { max-width: 570px; margin: 15px 0 12px; font-size: clamp(25px, 3vw, 39px); line-height: 1.22; letter-spacing: -.04em; }
        .featured-news p { max-width: 530px; margin: 0; color: #b7c2b8; }
        .featured-meta { display: flex; align-items: center; gap: 18px; margin-top: 24px; color: #97a49a; font-size: 12px; }
        .news-list { display: flex; flex-direction: column; gap: 10px; }
        .news-item {
            display: grid;
            grid-template-columns: 72px 1fr auto;
            gap: 16px;
            align-items: center;
            min-height: 100px;
            padding: 15px 18px;
            background: var(--paper);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
        }
        .news-item:hover { transform: translateX(4px); border-color: var(--lime-deep); box-shadow: 0 10px 24px rgba(25,32,27,.08); }
        .news-date { color: var(--muted); font-size: 12px; line-height: 1.35; }
        .news-date strong { display: block; color: var(--text); font-size: 22px; line-height: 1.1; }
        .news-item h3 { overflow: hidden; display: -webkit-box; margin: 0; font-size: 15px; line-height: 1.45; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
        .news-item p { overflow: hidden; display: -webkit-box; margin: 5px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; -webkit-line-clamp: 1; -webkit-box-orient: vertical; }
        .news-arrow { color: var(--coral); font-size: 19px; }

        .download-section { background: var(--paper); }
        .download-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            padding: 58px 64px;
            color: var(--white);
            background: #29312b;
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
        }
        .download-panel::before {
            content: "";
            position: absolute;
            width: 340px;
            height: 340px;
            right: -100px;
            top: -150px;
            border: 1px solid rgba(201,244,90,.22);
            border-radius: 50%;
        }
        .download-panel h2 { max-width: 540px; margin: 13px 0 14px; font-size: clamp(28px, 3.7vw, 44px); line-height: 1.2; letter-spacing: -.045em; }
        .download-panel p { max-width: 530px; margin: 0; color: #b5c0b7; }
        .download-meta { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
        .download-meta span { padding: 6px 10px; color: #d7ded5; border: 1px solid var(--line-dark); border-radius: 7px; font-size: 12px; }
        .download-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 29px; }
        .device-stage { min-height: 260px; position: relative; }
        .device {
            position: absolute;
            width: 156px;
            height: 270px;
            padding: 8px;
            background: #111512;
            border: 1px solid #536155;
            border-radius: 25px;
            box-shadow: 0 20px 35px rgba(0,0,0,.25);
        }
        .device::before { content: ""; display: block; width: 46px; height: 5px; margin: 3px auto 11px; background: #4e5b50; border-radius: 5px; }
        .device-screen { height: calc(100% - 19px); padding: 13px; background: var(--panel); border-radius: 18px; color: var(--text); }
        .device-screen .screen-logo { width: 29px; height: 29px; margin-bottom: 26px; background: var(--lime); border-radius: 8px; }
        .screen-line { height: 8px; margin: 9px 0; background: #c8d0c7; border-radius: 5px; }
        .screen-line.short { width: 60%; }
        .screen-block { height: 64px; margin-top: 20px; background: var(--lime); border-radius: 11px; }
        .device-main { right: 115px; top: 0; transform: rotate(-7deg); z-index: 2; }
        .device-small { right: 0; top: 43px; transform: rotate(9deg) scale(.87); opacity: .8; }

        .info-section { background: var(--panel-strong); }
        .info-grid { display: grid; grid-template-columns: .88fr 1.12fr; gap: 58px; align-items: center; }
        .info-intro h2 { margin: 14px 0; font-size: clamp(30px, 4vw, 49px); line-height: 1.15; letter-spacing: -.05em; }
        .info-intro p { max-width: 480px; margin: 0; color: var(--muted); }
        .info-board {
            padding: 30px;
            background: var(--paper);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            box-shadow: 0 14px 35px rgba(23,30,25,.06);
        }
        .info-board-top { display: flex; justify-content: space-between; align-items: center; padding-bottom: 21px; border-bottom: 1px solid var(--line); }
        .info-board-top strong { font-size: 17px; }
        .status { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font-size: 12px; }
        .status::before { content: ""; width: 7px; height: 7px; background: var(--lime-deep); border-radius: 50%; }
        .info-row { display: grid; grid-template-columns: 44px 1fr auto; gap: 14px; align-items: center; padding: 19px 0; border-bottom: 1px solid var(--line); }
        .info-row:last-child { border-bottom: 0; padding-bottom: 0; }
        .info-number { color: var(--lime-deep); font-size: 23px; font-weight: 900; }
        .info-row h3 { margin: 0; font-size: 16px; }
        .info-row p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
        .info-row a { color: var(--coral); font-size: 20px; }

        .faq-section { background: var(--paper); }
        .faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 76px; }
        .faq-intro h2 { margin: 14px 0; font-size: clamp(30px, 4vw, 47px); line-height: 1.15; letter-spacing: -.05em; }
        .faq-intro p { margin: 0; color: var(--muted); }
        .faq-list { border-top: 1px solid var(--line); }
        .faq-item { border-bottom: 1px solid var(--line); }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding: 20px 0;
            color: var(--text);
            background: none;
            border: 0;
            text-align: left;
            font-weight: 900;
        }
        .faq-question span:last-child { color: var(--coral); font-size: 24px; line-height: 1; transition: transform var(--ease); }
        .faq-answer { max-height: 0; overflow: hidden; color: var(--muted); transition: max-height var(--ease), padding var(--ease); }
        .faq-item.open .faq-answer { max-height: 160px; padding: 0 38px 20px 0; }
        .faq-item.open .faq-question { color: var(--lime-deep); }
        .faq-item.open .faq-question span:last-child { transform: rotate(45deg); }

        .cta-section { padding: 0 0 104px; background: var(--paper); }
        .cta-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            padding: 36px 44px;
            background: var(--lime);
            border-radius: var(--radius-lg);
        }
        .cta-box h2 { margin: 0 0 5px; font-size: 27px; line-height: 1.25; letter-spacing: -.04em; }
        .cta-box p { margin: 0; color: #42503c; }
        .cta-box .btn-primary { background: var(--ink); color: var(--white); }
        .cta-box .btn-primary:hover { background: #313a33; }

        .site-footer {
            padding: 64px 0 26px;
            color: #c0c9c0;
            background: var(--ink);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.35fr 1fr 1fr 1fr;
            gap: 38px;
            padding-bottom: 48px;
        }
        .footer-brand p {
            max-width: 290px;
            margin: 18px 0 0;
            color: #89958b;
            font-size: 13px;
        }
        .footer-title {
            margin: 5px 0 16px;
            color: var(--white);
            font-size: 14px;
            font-weight: 900;
        }
        .footer-links {
            display: grid;
            gap: 9px;
        }
        .footer-links a {
            width: fit-content;
            color: #9ba69d;
            font-size: 13px;
            transition: color var(--ease), transform var(--ease);
        }
        .footer-links a:hover {
            color: var(--lime);
            transform: translateX(3px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding-top: 21px;
            color: #78847a;
            border-top: 1px solid var(--line-dark);
            font-size: 12px;
        }
        .footer-bottom a:hover { color: var(--lime); }

        .empty-state {
            display: grid;
            place-items: center;
            min-height: 250px;
            padding: 30px;
            text-align: center;
            background: var(--paper);
            border: 1px dashed var(--line);
            border-radius: var(--radius-md);
        }
        .empty-icon {
            width: 48px;
            height: 48px;
            display: grid;
            place-items: center;
            margin-bottom: 11px;
            color: var(--ink);
            background: var(--panel-strong);
            border-radius: 14px;
            font-size: 22px;
        }
        .empty-state h3 { margin: 0; font-size: 18px; }
        .empty-state p { margin: 4px 0 16px; color: var(--muted); font-size: 13px; }

        @media (max-width: 1080px) {
            .container { width: min(var(--container), calc(100% - 48px)); }
            .header-inner { gap: 16px; }
            .brand { min-width: 225px; }
            .main-nav a { padding: 0 8px; font-size: 13px; }
            .main-nav a::after { right: 8px; left: 8px; }
            .hero-grid { gap: 35px; }
            .download-panel { padding: 48px; }
            .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
        }

        @media (max-width: 900px) {
            .section { padding: 78px 0; }
            .hero { padding: 72px 0 86px; }
            .hero-grid,
            .news-layout,
            .download-panel,
            .info-grid,
            .faq-layout { grid-template-columns: 1fr; }
            .hero-visual { min-height: 390px; max-width: 510px; width: 100%; margin: 0 auto; }
            .news-layout { gap: 18px; }
            .device-stage { max-width: 430px; margin: 0 auto; width: 100%; }
            .download-panel { gap: 12px; }
            .info-grid { gap: 32px; }
            .faq-layout { gap: 35px; }
        }

        @media (max-width: 768px) {
            .container { width: min(100% - 36px, 620px); }
            .header-inner { min-height: 72px; }
            .brand { min-width: 0; margin-right: auto; }
            .brand-name { font-size: 15px; }
            .brand-name small { display: none; }
            .header-cta { min-height: 43px; padding: 0 13px; font-size: 12px; }
            .menu-toggle { display: block; }
            .menu-toggle span,
            .menu-toggle::before,
            .menu-toggle::after {
                content: "";
                display: block;
                width: 18px;
                height: 2px;
                margin: 4px auto;
                background: currentColor;
                transition: transform var(--ease), opacity var(--ease);
            }
            .main-nav {
                position: absolute;
                top: 72px;
                right: 0;
                left: 0;
                display: none;
                padding: 12px 18px 20px;
                background: var(--ink-soft);
                border-top: 1px solid var(--line-dark);
            }
            .main-nav.open { display: grid; }
            .main-nav a {
                min-height: 48px;
                padding: 0 8px;
                border-bottom: 1px solid var(--line-dark);
            }
            .main-nav a:last-child { border-bottom: 0; }
            .main-nav a::after { right: auto; bottom: 10px; left: 8px; width: 24px; }
            .notice-bar { min-height: 32px; }
            .notice-bar .container { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
            .section-head { display: block; margin-bottom: 27px; }
            .section-head p { margin-top: 13px; }
            .section-head .text-link { margin-top: 16px; }
            .hero-copy h1 { font-size: clamp(36px, 11vw, 58px); }
            .hero-copy p { font-size: 16px; }
            .hero-visual { transform: scale(.88); transform-origin: center top; margin-bottom: -35px; }
            .quick-grid { grid-template-columns: 1fr 1fr; }
            .quick-item { min-height: 92px; padding: 15px; border-bottom: 1px solid var(--line); }
            .quick-item:nth-child(2) { border-right: 0; }
            .quick-item:nth-child(3),
            .quick-item:nth-child(4) { border-bottom: 0; }
            .download-panel { padding: 36px 27px; }
            .cta-box { display: block; padding: 29px 25px; }
            .cta-box .btn { margin-top: 22px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px 22px; }
            .footer-brand { grid-column: 1 / -1; }
        }

        @media (max-width: 520px) {
            .container { width: calc(100% - 30px); }
            .section { padding: 62px 0; }
            .hero { padding: 56px 0 68px; }
            .hero-actions { display: grid; grid-template-columns: 1fr; }
            .hero-actions .btn { width: 100%; }
            .hero-tags { gap: 6px; margin-top: 26px; }
            .hero-tag { font-size: 11px; }
            .hero-visual { min-height: 325px; transform: scale(.73); margin: -28px -40px -85px; width: calc(100% + 80px); }
            .quick-grid { grid-template-columns: 1fr; }
            .quick-item,
            .quick-item:nth-child(3) { border-right: 0; border-bottom: 1px solid var(--line); }
            .quick-item:last-child { border-bottom: 0; }
            .news-item { grid-template-columns: 58px 1fr 16px; gap: 10px; padding: 13px; }
            .news-date strong { font-size: 19px; }
            .news-item h3 { font-size: 14px; }
            .news-item p { display: none; }
            .featured-news { min-height: 370px; padding: 24px; }
            .featured-news h3 { font-size: 26px; }
            .download-panel { padding: 31px 21px; }
            .download-actions { display: grid; grid-template-columns: 1fr; }
            .download-actions .btn { width: 100%; }
            .device-stage { min-height: 235px; transform: scale(.82); transform-origin: center top; margin-bottom: -40px; }
            .device-main { right: calc(50% - 73px); }
            .device-small { right: calc(50% - 160px); }
            .info-board { padding: 21px 17px; }
            .info-row { grid-template-columns: 33px 1fr 15px; gap: 9px; }
            .info-row h3 { font-size: 14px; }
            .info-row p { font-size: 11px; }
            .faq-item.open .faq-answer { padding-right: 0; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-bottom { display: block; line-height: 1.8; }
            .footer-bottom span { display: block; margin-top: 6px; }
        }

/* roulang page: article */
:root {
            --ink: #171b19;
            --ink-soft: #222824;
            --panel: #f2f3ec;
            --panel-strong: #e7eadf;
            --paper: #fbfcf7;
            --lime: #c9f45a;
            --lime-deep: #9bcf2e;
            --coral: #e8785f;
            --text: #202622;
            --muted: #69736b;
            --line: rgba(32, 38, 34, .13);
            --line-dark: rgba(255,255,255,.14);
            --white: #fffef8;
            --shadow: 0 18px 48px rgba(19, 27, 22, .12);
            --shadow-soft: 0 10px 30px rgba(19, 27, 22, .08);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --container: 1220px;
            --ease: 220ms ease;
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--paper);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid rgba(201,244,90,.75);
            outline-offset: 3px;
        }
        button, input { font: inherit; }
        button { cursor: pointer; }
        img { display: block; max-width: 100%; }
        .container {
            width: min(var(--container), calc(100% - 64px));
            margin: 0 auto;
        }

        .site-header {
            position: relative;
            z-index: 20;
            background: var(--ink);
            color: var(--white);
        }
        .header-inner {
            min-height: 82px;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: 250px;
            font-weight: 900;
            letter-spacing: -.035em;
        }
        .brand-mark {
            position: relative;
            width: 34px;
            height: 34px;
            flex: 0 0 34px;
            background: var(--lime);
            border-radius: 9px 15px 9px 15px;
            transform: rotate(-8deg);
        }
        .brand-mark::before,
        .brand-mark::after {
            content: "";
            position: absolute;
            background: var(--ink);
        }
        .brand-mark::before { width: 16px; height: 4px; top: 9px; left: 9px; }
        .brand-mark::after { width: 10px; height: 4px; top: 18px; left: 9px; }
        .brand-name { font-size: 17px; line-height: 1.2; }
        .main-nav {
            display: flex;
            align-items: stretch;
            gap: 4px;
            margin-left: auto;
        }
        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 82px;
            padding: 0 13px;
            color: #c6cdc7;
            font-size: 14px;
            font-weight: 700;
            transition: color var(--ease);
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            right: 13px;
            bottom: 17px;
            left: 13px;
            height: 3px;
            background: var(--lime);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--ease);
        }
        .main-nav a:hover,
        .main-nav a.active { color: var(--white); }
        .main-nav a:hover::after,
        .main-nav a.active::after { transform: scaleX(1); }
        .header-cta,
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 20px;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 900;
            transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease), box-shadow var(--ease);
        }
        .header-cta {
            color: var(--ink);
            background: var(--lime);
            white-space: nowrap;
        }
        .header-cta:hover,
        .btn-primary:hover {
            color: var(--ink);
            background: #ddff81;
            transform: translateY(-2px);
            box-shadow: 0 9px 22px rgba(201,244,90,.2);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            color: var(--white);
            background: transparent;
            border: 1px solid var(--line-dark);
            border-radius: 9px;
        }

        .notice-bar {
            color: #d9dfd8;
            background: var(--ink-soft);
            border-top: 1px solid var(--line-dark);
            border-bottom: 1px solid var(--line-dark);
            font-size: 13px;
        }
        .notice-bar .container {
            min-height: 38px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .notice-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--lime);
            box-shadow: 0 0 0 4px rgba(201,244,90,.12);
        }

        .article-hero {
            padding: 76px 0 64px;
            color: var(--white);
            background:
                linear-gradient(135deg, rgba(23,27,25,.98), rgba(34,40,36,.96)),
                repeating-linear-gradient(90deg, transparent 0 48px, rgba(201,244,90,.035) 49px 50px);
            position: relative;
            overflow: hidden;
        }
        .article-hero::after {
            content: "";
            position: absolute;
            width: 360px;
            height: 360px;
            right: -110px;
            top: -150px;
            border: 1px solid rgba(201,244,90,.2);
            border-radius: 50%;
            box-shadow: 0 0 0 28px rgba(201,244,90,.025), 0 0 0 56px rgba(201,244,90,.02);
        }
        .breadcrumbs {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 9px;
            margin-bottom: 34px;
            color: #aab5ab;
            font-size: 13px;
        }
        .breadcrumbs a:hover { color: var(--lime); }
        .breadcrumbs .separator { color: var(--coral); }
        .article-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--lime);
            font-size: 12px;
            font-weight: 900;
            letter-spacing: .14em;
        }
        .article-kicker::before {
            content: "";
            width: 24px;
            height: 2px;
            background: currentColor;
        }
        .article-hero h1 {
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 15px 0 20px;
            font-size: clamp(32px, 5vw, 62px);
            line-height: 1.16;
            letter-spacing: -.055em;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: #b9c2ba;
            font-size: 14px;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .meta-item strong { color: var(--white); }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 820px) 300px;
            gap: 72px;
            align-items: start;
            padding: 78px 0 100px;
        }
        .article-content {
            min-width: 0;
            font-size: 17px;
            line-height: 1.92;
        }
        .article-content > *:first-child { margin-top: 0; }
        .article-content h2,
        .article-content h3 {
            color: var(--text);
            line-height: 1.35;
            letter-spacing: -.035em;
        }
        .article-content h2 {
            margin: 46px 0 16px;
            padding-left: 17px;
            border-left: 4px solid var(--lime-deep);
            font-size: 29px;
        }
        .article-content h3 {
            margin: 32px 0 12px;
            font-size: 22px;
        }
        .article-content p { margin: 0 0 22px; }
        .article-content ul,
        .article-content ol {
            margin: 16px 0 26px;
            padding-left: 28px;
        }
        .article-content li { margin: 7px 0; }
        .article-content blockquote {
            margin: 30px 0;
            padding: 22px 24px;
            color: #465149;
            background: var(--panel);
            border-left: 4px solid var(--coral);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        .article-content img {
            width: 100%;
            height: auto;
            margin: 30px 0;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-soft);
        }
        .article-content table {
            width: 100%;
            margin: 28px 0;
            border-collapse: collapse;
            background: var(--panel);
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .article-content th,
        .article-content td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid var(--line);
        }
        .article-content th { color: var(--text); background: var(--panel-strong); }
        .article-content code {
            padding: 3px 7px;
            color: #5f7825;
            background: #edf5d8;
            border-radius: 5px;
        }
        .article-content hr {
            margin: 42px 0;
            border: 0;
            border-top: 1px solid var(--line);
        }

        .article-empty {
            padding: 56px 30px;
            text-align: center;
            background: var(--panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
        }
        .empty-icon {
            width: 54px;
            height: 54px;
            display: grid;
            place-items: center;
            margin: 0 auto 18px;
            color: var(--ink);
            background: var(--lime);
            border-radius: 16px;
            font-size: 25px;
            font-weight: 900;
        }
        .article-empty h2 { margin: 0 0 8px; font-size: 25px; }
        .article-empty p { margin: 0 0 22px; color: var(--muted); }

        .article-side {
            position: sticky;
            top: 24px;
            display: grid;
            gap: 18px;
        }
        .side-card {
            padding: 23px;
            background: var(--panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
        }
        .side-card.dark {
            color: var(--white);
            background: var(--ink);
            border-color: var(--ink);
        }
        .side-title {
            margin: 0 0 15px;
            font-size: 17px;
            line-height: 1.35;
        }
        .side-card p {
            margin: 0 0 17px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
        }
        .side-card.dark p { color: #b9c2ba; }
        .side-links {
            display: grid;
            gap: 0;
        }
        .side-links a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 11px 0;
            color: #4d5a51;
            border-top: 1px solid var(--line);
            font-size: 14px;
            font-weight: 700;
            transition: color var(--ease), padding var(--ease);
        }
        .side-links a:hover { padding-left: 5px; color: var(--lime-deep); }
        .side-card.dark .side-links a {
            color: #dce4da;
            border-color: var(--line-dark);
        }
        .side-card.dark .side-links a:hover { color: var(--lime); }
        .side-arrow { color: var(--coral); font-size: 19px; }

        .article-tools {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 42px;
            padding-top: 25px;
            border-top: 1px solid var(--line);
        }
        .btn-primary {
            color: var(--ink);
            background: var(--lime);
        }
        .btn-secondary {
            color: var(--text);
            background: transparent;
            border-color: var(--line);
        }
        .btn-secondary:hover {
            color: var(--text);
            background: var(--panel);
            border-color: var(--lime-deep);
            transform: translateY(-2px);
        }

        .article-bottom {
            padding: 30px;
            margin-top: 52px;
            background: var(--panel);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
        }
        .article-bottom-title {
            margin: 0 0 18px;
            font-size: 20px;
            letter-spacing: -.025em;
        }
        .article-bottom-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .bottom-link {
            display: block;
            padding: 16px 18px;
            background: var(--paper);
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
        }
        .bottom-link:hover {
            transform: translateY(-3px);
            border-color: var(--lime-deep);
            box-shadow: var(--shadow-soft);
        }
        .bottom-link small {
            display: block;
            margin-bottom: 5px;
            color: var(--coral);
            font-size: 12px;
            font-weight: 800;
        }
        .bottom-link strong { font-size: 14px; line-height: 1.5; }

        .site-footer {
            color: #dbe2da;
            background: var(--ink);
            padding: 66px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 42px;
            padding-bottom: 48px;
        }
        .footer-brand .brand { min-width: 0; color: var(--white); }
        .footer-brand p {
            max-width: 320px;
            margin: 20px 0 0;
            color: #9fa9a0;
            font-size: 14px;
            line-height: 1.8;
        }
        .footer-title {
            margin: 4px 0 15px;
            color: var(--white);
            font-size: 15px;
        }
        .footer-links { display: grid; gap: 9px; }
        .footer-links a {
            color: #9fa9a0;
            font-size: 14px;
            transition: color var(--ease), transform var(--ease);
        }
        .footer-links a:hover { color: var(--lime); transform: translateX(3px); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding-top: 22px;
            color: #89958b;
            border-top: 1px solid var(--line-dark);
            font-size: 12px;
        }
        .footer-bottom a { color: var(--lime); font-weight: 800; }

        @media (max-width: 1024px) {
            .container { width: min(var(--container), calc(100% - 44px)); }
            .header-inner { gap: 15px; }
            .brand { min-width: 220px; }
            .main-nav a { padding: 0 8px; }
            .article-layout { grid-template-columns: minmax(0, 1fr) 260px; gap: 38px; }
        }
        @media (max-width: 900px) {
            .article-layout { grid-template-columns: 1fr; padding-top: 55px; }
            .article-side {
                position: static;
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
            .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .container { width: min(var(--container), calc(100% - 32px)); }
            .header-inner { min-height: 72px; }
            .brand { flex: 1; min-width: 0; }
            .brand-name { font-size: 15px; }
            .header-cta { display: none; }
            .menu-toggle { display: block; }
            .main-nav {
                position: absolute;
                top: 72px;
                right: 16px;
                left: 16px;
                display: none;
                padding: 10px;
                background: var(--ink-soft);
                border: 1px solid var(--line-dark);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow);
            }
            .main-nav.open { display: grid; }
            .main-nav a { min-height: 48px; padding: 0 15px; }
            .main-nav a::after { right: 15px; bottom: 8px; left: 15px; }
            .article-hero { padding: 52px 0 48px; }
            .article-hero h1 { font-size: clamp(30px, 9vw, 46px); }
            .article-content { font-size: 16px; }
            .article-side { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px 24px; }
            .footer-brand { grid-column: 1 / -1; }
            .footer-bottom { display: grid; gap: 8px; }
        }
        @media (max-width: 520px) {
            .notice-bar { font-size: 12px; }
            .article-meta { gap: 8px 14px; font-size: 13px; }
            .article-layout { padding-bottom: 66px; }
            .article-content h2 { font-size: 25px; }
            .article-bottom { padding: 21px; }
            .article-bottom-grid { grid-template-columns: 1fr; }
            .article-tools .btn { width: 100%; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-brand { grid-column: auto; }
        }

/* roulang page: category2 */
:root {
            --ink: #171b19;
            --ink-soft: #222824;
            --panel: #f2f3ec;
            --panel-strong: #e7eadf;
            --paper: #fbfcf7;
            --lime: #c9f45a;
            --lime-deep: #9bcf2e;
            --coral: #e8785f;
            --text: #202622;
            --muted: #69736b;
            --line: rgba(32, 38, 34, .13);
            --line-dark: rgba(255,255,255,.14);
            --white: #fffef8;
            --shadow: 0 18px 48px rgba(19, 27, 22, .12);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --container: 1220px;
            --ease: 220ms ease;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--paper);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        button, input { font: inherit; }
        button { cursor: pointer; }
        img { display: block; max-width: 100%; }
        .container {
            width: min(var(--container), calc(100% - 64px));
            margin: 0 auto;
        }
        .site-header {
            position: relative;
            z-index: 20;
            background: var(--ink);
            color: var(--white);
        }
        .header-inner {
            min-height: 82px;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: 250px;
            font-weight: 900;
            letter-spacing: -.035em;
        }
        .brand-mark {
            position: relative;
            width: 34px;
            height: 34px;
            flex: 0 0 34px;
            background: var(--lime);
            border-radius: 9px 15px 9px 15px;
            transform: rotate(-8deg);
        }
        .brand-mark::before,
        .brand-mark::after {
            content: "";
            position: absolute;
            background: var(--ink);
        }
        .brand-mark::before { width: 16px; height: 4px; top: 9px; left: 9px; }
        .brand-mark::after { width: 10px; height: 4px; top: 18px; left: 9px; }
        .brand-name { font-size: 17px; line-height: 1.2; }
        .main-nav {
            display: flex;
            align-items: stretch;
            gap: 4px;
            margin-left: auto;
        }
        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 82px;
            padding: 0 13px;
            color: #c6cdc7;
            font-size: 14px;
            font-weight: 700;
            transition: color var(--ease);
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            right: 13px;
            bottom: 17px;
            left: 13px;
            height: 3px;
            background: var(--lime);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--ease);
        }
        .main-nav a:hover,
        .main-nav a.active { color: var(--white); }
        .main-nav a:hover::after,
        .main-nav a.active::after { transform: scaleX(1); }
        .header-cta,
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 20px;
            border: 1px solid transparent;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 900;
            transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease), box-shadow var(--ease);
        }
        .header-cta {
            color: var(--ink);
            background: var(--lime);
            white-space: nowrap;
        }
        .header-cta:hover,
        .btn-primary:hover {
            color: var(--ink);
            background: #ddff81;
            transform: translateY(-2px);
            box-shadow: 0 9px 22px rgba(201,244,90,.2);
        }
        .btn-primary {
            color: var(--ink);
            background: var(--lime);
        }
        .btn-secondary {
            color: var(--text);
            background: transparent;
            border-color: var(--line);
        }
        .btn-secondary:hover {
            color: var(--ink);
            border-color: var(--lime-deep);
            background: rgba(201,244,90,.18);
            transform: translateY(-2px);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            color: var(--white);
            background: transparent;
            border: 1px solid var(--line-dark);
            border-radius: 9px;
        }
        .notice-bar {
            color: #c6cdc7;
            background: var(--ink-soft);
            border-top: 1px solid var(--line-dark);
            border-bottom: 1px solid var(--line-dark);
            font-size: 13px;
        }
        .notice-bar .container {
            min-height: 38px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .notice-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--lime);
        }
        .hero {
            position: relative;
            overflow: hidden;
            padding: 76px 0 86px;
            color: var(--white);
            background:
                linear-gradient(110deg, rgba(23,27,25,.98), rgba(34,40,36,.98)),
                var(--ink);
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            opacity: .22;
            background-image: linear-gradient(rgba(201,244,90,.13) 1px, transparent 1px), linear-gradient(90deg, rgba(201,244,90,.13) 1px, transparent 1px);
            background-size: 42px 42px;
            mask-image: linear-gradient(90deg, black, transparent 75%);
        }
        .hero-grid {
            position: relative;
            display: grid;
            grid-template-columns: 1fr .9fr;
            gap: 72px;
            align-items: center;
        }
        .crumbs {
            display: flex;
            gap: 10px;
            align-items: center;
            color: #aab4aa;
            font-size: 13px;
            margin-bottom: 25px;
        }
        .crumbs a:hover { color: var(--lime); }
        .crumbs span { color: var(--coral); }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--lime);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .14em;
        }
        .eyebrow::before {
            content: "";
            width: 24px;
            height: 2px;
            background: currentColor;
        }
        .hero h1 {
            max-width: 690px;
            margin: 15px 0 20px;
            font-size: clamp(38px, 5.4vw, 70px);
            line-height: 1.1;
            letter-spacing: -.06em;
        }
        .hero-copy {
            max-width: 640px;
            color: #c8d0c8;
            font-size: 18px;
            line-height: 1.85;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 30px;
        }
        .hero .btn-secondary {
            color: var(--white);
            border-color: var(--line-dark);
        }
        .hero .btn-secondary:hover { color: var(--lime); }
        .hero-points {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }
        .hero-points span {
            padding: 6px 11px;
            border: 1px solid var(--line-dark);
            border-radius: 999px;
            color: #d1d8d0;
            font-size: 12px;
        }
        .device-stage {
            position: relative;
            min-height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .device-glow {
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(201,244,90,.13);
            filter: blur(3px);
        }
        .phone {
            position: relative;
            z-index: 2;
            width: 226px;
            padding: 10px;
            border: 7px solid #303933;
            border-radius: 34px;
            background: #0e1210;
            box-shadow: 22px 24px 0 rgba(0,0,0,.22), 0 25px 60px rgba(0,0,0,.35);
            transform: rotate(5deg);
        }
        .phone-screen {
            min-height: 370px;
            padding: 19px 15px;
            overflow: hidden;
            border-radius: 23px;
            background: #eef1e6;
            color: var(--text);
        }
        .screen-top {
            display: flex;
            justify-content: space-between;
            font-size: 10px;
            font-weight: 800;
        }
        .screen-banner {
            height: 105px;
            margin: 23px 0 15px;
            padding: 15px;
            border-radius: 14px;
            background: var(--ink);
            color: var(--lime);
            font-size: 18px;
            font-weight: 900;
            line-height: 1.25;
        }
        .screen-line {
            height: 12px;
            margin: 10px 0;
            border-radius: 6px;
            background: #d4dbcd;
        }
        .screen-line.short { width: 62%; }
        .screen-card {
            margin-top: 17px;
            padding: 13px;
            border-radius: 12px;
            background: #fffef8;
            box-shadow: 0 8px 18px rgba(20,30,22,.08);
        }
        .phone-back {
            position: absolute;
            z-index: 1;
            width: 182px;
            height: 306px;
            margin: 68px 0 0 188px;
            border: 5px solid #414c43;
            border-radius: 27px;
            background: #8b9b87;
            transform: rotate(-11deg);
            opacity: .8;
        }
        .device-tag {
            position: absolute;
            z-index: 3;
            right: 0;
            top: 52px;
            padding: 10px 14px;
            border-radius: 10px;
            color: var(--ink);
            background: var(--lime);
            font-size: 12px;
            font-weight: 900;
        }
        .section { padding: 94px 0; }
        .section-head {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 28px;
            margin-bottom: 38px;
        }
        .section-head h2 {
            max-width: 680px;
            margin: 10px 0 0;
            font-size: clamp(30px, 4vw, 48px);
            line-height: 1.16;
            letter-spacing: -.045em;
        }
        .section-head p {
            max-width: 410px;
            margin: 0;
            color: var(--muted);
        }
        .section-kicker {
            color: var(--coral);
            font-size: 13px;
            font-weight: 900;
            letter-spacing: .1em;
        }
        .download-panel {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 40px;
            padding: 44px;
            border-radius: var(--radius-lg);
            background: var(--panel);
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
        }
        .download-panel h2 { margin: 9px 0 16px; font-size: clamp(30px, 4vw, 47px); line-height: 1.18; letter-spacing: -.05em; }
        .download-panel p { color: var(--muted); max-width: 620px; }
        .version-row {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
            margin: 22px 0;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            min-height: 28px;
            padding: 3px 10px;
            border-radius: 999px;
            background: var(--ink);
            color: var(--lime);
            font-size: 12px;
            font-weight: 800;
        }
        .badge.coral { color: #fff; background: var(--coral); }
        .download-side {
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 220px;
            padding: 25px;
            border-radius: var(--radius-md);
            background: var(--ink);
            color: var(--white);
        }
        .qr-box {
            width: 132px;
            height: 132px;
            display: grid;
            place-items: center;
            margin-right: 22px;
            border: 9px solid var(--white);
            background:
                linear-gradient(45deg, var(--ink) 25%, transparent 25%, transparent 75%, var(--ink) 75%),
                linear-gradient(45deg, var(--ink) 25%, transparent 25%, transparent 75%, var(--ink) 75%);
            background-position: 0 0, 13px 13px;
            background-size: 26px 26px;
        }
        .qr-box span {
            padding: 5px;
            color: var(--ink);
            background: var(--lime);
            font-size: 10px;
            font-weight: 900;
            transform: rotate(-8deg);
        }
        .download-side h3 { margin: 0 0 8px; font-size: 21px; }
        .download-side p { margin: 0 0 15px; color: #adb8ae; font-size: 13px; }
        .step-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .step-card {
            position: relative;
                       padding: 26px 22px 24px;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: var(--paper);
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
        }
        .step-card:hover {
            transform: translateY(-4px);
            border-color: var(--lime-deep);
            box-shadow: var(--shadow);
        }
        .step-number {
            display: inline-grid;
            width: 38px;
            height: 38px;
            place-items: center;
            margin-bottom: 18px;
            border-radius: 11px;
            color: var(--ink);
            background: var(--lime);
            font-weight: 900;
        }
        .step-card h3 { margin: 0 0 8px; font-size: 19px; }
        .step-card p { margin: 0; color: var(--muted); font-size: 14px; }
        .info-layout {
            display: grid;
            grid-template-columns: .85fr 1.15fr;
            gap: 22px;
            align-items: stretch;
        }
        .info-card,
        .faq-card,
        .news-card {
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: var(--white);
        }
        .info-card {
            padding: 30px;
            background: var(--ink);
            color: var(--white);
        }
        .info-card h3 { margin: 8px 0 15px; font-size: 27px; line-height: 1.3; }
        .info-card p { color: #b8c1b9; font-size: 14px; }
        .info-list {
            display: grid;
            gap: 0;
            margin: 25px 0 0;
        }
        .info-list div {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            padding: 14px 0;
            border-top: 1px solid var(--line-dark);
            font-size: 14px;
        }
        .info-list span:first-child { color: #9da99e; }
        .info-list span:last-child { color: var(--lime); font-weight: 800; text-align: right; }
        .news-card { padding: 26px 30px; }
        .news-card-head {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            align-items: center;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--line);
        }
        .news-card-head h3 { margin: 0; font-size: 22px; }
        .news-list { margin: 0; padding: 0; list-style: none; }
        .news-list li {
            display: grid;
            grid-template-columns: 94px 1fr 22px;
            gap: 16px;
            align-items: center;
            padding: 17px 0;
            border-bottom: 1px solid var(--line);
        }
        .news-list li:last-child { border-bottom: 0; }
        .news-date { color: var(--muted); font-size: 12px; }
        .news-title { font-weight: 800; line-height: 1.45; }
        .news-list li:hover .news-title { color: var(--lime-deep); }
        .news-arrow { color: var(--coral); font-size: 21px; transition: transform var(--ease); }
        .news-list li:hover .news-arrow { transform: translateX(4px); }
        .faq-wrap {
            display: grid;
            grid-template-columns: .72fr 1.28fr;
            gap: 55px;
            align-items: start;
        }
        .faq-intro h2 { margin: 10px 0 16px; font-size: clamp(30px, 4vw, 46px); line-height: 1.18; letter-spacing: -.05em; }
        .faq-intro p { color: var(--muted); }
        .faq-list { display: grid; gap: 12px; }
        .faq-item {
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            background: var(--white);
        }
        .faq-item summary {
            position: relative;
            padding: 20px 52px 20px 22px;
            list-style: none;
            cursor: pointer;
            font-weight: 800;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: "+";
            position: absolute;
            right: 21px;
            top: 17px;
            color: var(--coral);
            font-size: 24px;
            font-weight: 400;
        }
        .faq-item[open] summary {
            color: var(--ink);
            border-left: 4px solid var(--lime);
            padding-left: 18px;
        }
        .faq-item[open] summary::after { content: "−"; color: var(--lime-deep); }
        .faq-answer {
            padding: 0 22px 20px;
            color: var(--muted);
            font-size: 14px;
        }
        .cta-section { padding: 0 0 96px; }
        .cta-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            padding: 38px 42px;
            border-radius: var(--radius-lg);
            background: var(--lime);
            color: var(--ink);
        }
        .cta-box h2 { margin: 0 0 8px; font-size: clamp(27px, 4vw, 41px); line-height: 1.2; letter-spacing: -.045em; }
        .cta-box p { margin: 0; max-width: 650px; color: #45552a; }
        .cta-box .btn {
            flex: 0 0 auto;
            color: var(--white);
            background: var(--ink);
        }
        .cta-box .btn:hover { background: var(--ink-soft); transform: translateY(-2px); }
        .site-footer {
            padding: 64px 0 24px;
            color: #c7cec7;
            background: var(--ink);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 42px;
            padding-bottom: 48px;
        }
        .footer-brand .brand { min-width: 0; color: var(--white); }
        .footer-brand p {
            max-width: 330px;
            margin: 20px 0 0;
            color: #9da89e;
            font-size: 14px;
        }
        .footer-title { margin: 0 0 15px; color: var(--white); font-size: 15px; }
        .footer-links { display: grid; gap: 8px; }
        .footer-links a {
            color: #9da89e;
            font-size: 14px;
            transition: color var(--ease), transform var(--ease);
        }
        .footer-links a:hover { color: var(--lime); transform: translateX(3px); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding-top: 20px;
            border-top: 1px solid var(--line-dark);
            color: #89958b;
            font-size: 12px;
        }
        .footer-bottom a { color: var(--lime); font-weight: 800; }
        :focus-visible {
            outline: 3px solid var(--lime);
            outline-offset: 4px;
        }
        @media (max-width: 1024px) {
            .container { width: min(var(--container), calc(100% - 44px)); }
            .main-nav a { padding: 0 8px; font-size: 13px; }
            .brand { min-width: 220px; }
            .hero-grid { gap: 38px; }
            .download-panel { padding: 32px; }
        }
        @media (max-width: 900px) {
            .header-inner { gap: 16px; }
            .header-cta { display: none; }
            .hero-grid,
            .download-panel,
            .info-layout,
            .faq-wrap { grid-template-columns: 1fr; }
            .hero { padding: 58px 0 70px; }
            .device-stage { min-height: 350px; }
            .download-side { justify-content: flex-start; }
            .footer-grid { grid-template-columns: 1.4fr repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .container { width: min(var(--container), calc(100% - 36px)); }
            .main-nav {
                position: absolute;
                top: 82px;
                right: 18px;
                left: 18px;
                display: none;
                flex-direction: column;
                padding: 10px;
                border: 1px solid var(--line-dark);
                border-radius: 14px;
                background: var(--ink-soft);
                box-shadow: 0 18px 35px rgba(0,0,0,.28);
            }
            .main-nav.open { display: flex; }
            .main-nav a { min-height: 48px; padding: 0 15px; }
            .main-nav a::after { right: 15px; bottom: 8px; left: 15px; }
            .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
            .brand-name { font-size: 15px; }
            .section { padding: 68px 0; }
            .section-head { display: block; margin-bottom: 28px; }
            .section-head p { margin-top: 14px; }
            .step-grid { grid-template-columns: 1fr; }
            .cta-section { padding-bottom: 68px; }
            .cta-box { display: block; padding: 30px 25px; }
            .cta-box .btn { margin-top: 22px; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 22px; }
            .footer-brand { grid-column: 1 / -1; }
            .footer-bottom { display: block; }
            .footer-bottom span { display: block; margin-top: 8px; }
        }
        @media (max-width: 520px) {
            body { font-size: 15px; }
            .container { width: calc(100% - 28px); }
            .brand { min-width: 0; }
            .brand-name { max-width: 190px; }
            .hero h1 { font-size: 38px; }
            .hero-copy { font-size: 16px; }
            .hero-actions,
            .hero-actions .btn { width: 100%; }
            .hero-actions .btn { min-height: 46px; }
            .device-stage { min-height: 315px; transform: scale(.88); margin: -18px 0; }
            .device-tag { right: 4px; top: 28px; }
            .download-panel { padding: 24px 18px; }
            .download-side { display: block; text-align: center; }
            .qr-box { margin: 0 auto 20px; }
            .news-card { padding: 22px 18px; }
            .news-list li { grid-template-columns: 1fr 20px; gap: 8px; }
            .news-date { grid-column: 1 / -1; }
            .faq-intro h2 { font-size: 32px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-title { font-size: 14px; }
        }

/* roulang page: category4 */
:root{
            --ink:#171b19;
            --ink-soft:#222824;
            --panel:#f2f3ec;
            --panel-strong:#e7eadf;
            --paper:#fbfcf7;
            --lime:#c9f45a;
            --lime-deep:#9bcf2e;
            --coral:#e8785f;
            --text:#202622;
            --muted:#69736b;
            --line:rgba(32,38,34,.13);
            --line-dark:rgba(255,255,255,.14);
            --white:#fffef8;
            --shadow:0 18px 48px rgba(19,27,22,.12);
            --radius-lg:24px;
            --radius-md:16px;
            --radius-sm:10px;
            --container:1220px;
            --ease:220ms ease;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            color:var(--text);
            background:var(--paper);
            font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;
            font-size:16px;
            line-height:1.75;
            -webkit-font-smoothing:antialiased;
        }
        a{color:inherit;text-decoration:none}
        button,input{font:inherit}
        button{cursor:pointer}
        img{display:block;max-width:100%}
        .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
        .site-header{position:relative;z-index:20;background:var(--ink);color:var(--white)}
        .header-inner{min-height:82px;display:flex;align-items:center;gap:28px}
        .brand{display:inline-flex;align-items:center;gap:11px;min-width:250px;font-weight:900;letter-spacing:-.035em}
        .brand-mark{position:relative;width:34px;height:34px;flex:0 0 34px;background:var(--lime);border-radius:9px 15px 9px 15px;transform:rotate(-8deg)}
        .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--ink)}
        .brand-mark:before{width:16px;height:4px;top:9px;left:9px}
        .brand-mark:after{width:10px;height:4px;top:18px;left:9px}
        .brand-name{font-size:17px;line-height:1.2}
        .main-nav{display:flex;align-items:stretch;gap:4px;margin-left:auto}
        .main-nav a{position:relative;display:inline-flex;align-items:center;min-height:82px;padding:0 13px;color:#c6cdc7;font-size:14px;font-weight:700;transition:color var(--ease)}
        .main-nav a:after{content:"";position:absolute;right:13px;bottom:17px;left:13px;height:3px;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform var(--ease)}
        .main-nav a:hover,.main-nav a.active{color:var(--white)}
        .main-nav a:hover:after,.main-nav a.active:after{transform:scaleX(1)}
        .header-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 20px;border:1px solid transparent;border-radius:10px;font-size:14px;font-weight:900;transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease)}
        .header-cta{color:var(--ink);background:var(--lime);white-space:nowrap}
        .header-cta:hover,.btn-primary:hover{background:#ddff81;transform:translateY(-2px);box-shadow:0 9px 22px rgba(201,244,90,.2)}
        .menu-toggle{display:none;width:44px;height:44px;color:var(--white);background:transparent;border:1px solid var(--line-dark);border-radius:9px}
        .notice-bar{background:#252d28;color:#b9c5bb;font-size:13px}
        .notice-bar .container{display:flex;align-items:center;gap:10px;min-height:38px}
        .notice-dot{width:7px;height:7px;border-radius:50%;background:var(--coral);box-shadow:0 0 0 4px rgba(232,120,95,.12)}
        .hero{position:relative;overflow:hidden;padding:82px 0 86px;color:var(--white);background:var(--ink)}
        .hero:before{content:"";position:absolute;inset:0;opacity:.12;background-image:linear-gradient(rgba(201,244,90,.3) 1px,transparent 1px),linear-gradient(90deg,rgba(201,244,90,.3) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(90deg,#000,transparent 78%)}
        .hero:after{content:"";position:absolute;width:420px;height:420px;right:-130px;top:-180px;border:1px solid rgba(201,244,90,.35);border-radius:50%}
        .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:70px}
        .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.14em}
        .eyebrow:before{content:"";width:24px;height:2px;background:currentColor}
        .hero h1{max-width:760px;margin:16px 0 20px;font-size:clamp(36px,5vw,68px);line-height:1.12;letter-spacing:-.06em}
        .hero p{max-width:650px;margin:0;color:#c7d0c8;font-size:18px}
        .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:31px}
        .btn-primary{color:var(--ink);background:var(--lime)}
        .btn-outline{color:var(--white);background:transparent;border-color:rgba(255,255,255,.25)}
        .btn-outline:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
        .hero-panel{padding:28px;border:1px solid rgba(201,244,90,.28);border-radius:var(--radius-lg);background:rgba(255,255,255,.055)}
        .panel-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:20px;border-bottom:1px solid var(--line-dark);color:#aeb9b0;font-size:13px}
        .status{display:inline-flex;align-items:center;gap:7px;color:var(--lime);font-weight:800}
        .status:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--lime)}
        .hero-panel h2{margin:24px 0 8px;font-size:27px;line-height:1.25}
        .hero-panel p{font-size:14px;color:#adb8af}
        .panel-row{display:flex;align-items:center;justify-content:space-between;padding:15px 0;border-bottom:1px solid var(--line-dark);font-size:14px}
        .panel-row strong{color:var(--lime);font-size:18px}
        .section{padding:96px 0}
        .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:38px}
        .section-head h2{max-width:680px;margin:10px 0 0;font-size:clamp(30px,4vw,48px);line-height:1.16;letter-spacing:-.045em}
        .section-head p{max-width:420px;margin:0;color:var(--muted)}
        .text-link{display:inline-flex;align-items:center;gap:9px;color:var(--text);font-weight:800;white-space:nowrap;transition:color var(--ease),gap var(--ease)}
        .text-link span{color:var(--coral);font-size:20px}
        .text-link:hover{color:var(--lime-deep);gap:14px}
        .timeline-wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:28px}
        .timeline{position:relative;padding-left:35px}
        .timeline:before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:1px;background:var(--line)}
        .timeline-item{position:relative;display:grid;grid-template-columns:115px 1fr;gap:22px;padding:0 0 34px}
        .timeline-item:before{content:"";position:absolute;left:-31px;top:8px;width:9px;height:9px;border:2px solid var(--lime-deep);border-radius:50%;background:var(--paper)}
        .timeline-date{color:var(--muted);font-size:13px;font-weight:800}
        .timeline-card{padding:23px 25px;border:1px solid var(--line);border-radius:var(--radius-md);background:#fff;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
        .timeline-card:hover{transform:translateY(-3px);border-color:var(--lime-deep);box-shadow:var(--shadow)}
        .tag{display:inline-flex;padding:3px 9px;border-radius:6px;background:var(--panel-strong);color:#536057;font-size:12px;font-weight:800}
        .tag.important{background:#ffe2d9;color:#ad4d3d}
        .timeline-card h3{margin:12px 0 7px;font-size:20px;line-height:1.4}
        .timeline-card p{margin:0;color:var(--muted);font-size:14px}
        .arrow{display:inline-flex;margin-top:14px;color:var(--coral);font-weight:900}
        .side-card{height:fit-content;padding:30px;border-radius:var(--radius-lg);background:var(--ink);color:var(--white)}
        .side-card h3{margin:0 0 13px;font-size:25px}
        .side-card p{color:#b6c0b8;font-size:14px}
        .side-list{margin:24px 0 0;padding:0;list-style:none}
        .side-list li{display:flex;justify-content:space-between;gap:18px;padding:15px 0;border-top:1px solid var(--line-dark);color:#dce3dd;font-size:14px}
        .side-list span{color:var(--lime);font-weight:800}
        .notice-section{background:var(--panel)}
        .notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .notice-card{position:relative;padding:27px 25px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--paper)}
        .notice-card:before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:4px;border-radius:0 4px 4px 0;background:var(--lime)}
        .notice-card.alert:before{background:var(--coral)}
        .notice-card h3{margin:0 0 9px;font-size:19px;line-height:1.4}
        .notice-card p{margin:0;color:var(--muted);font-size:14px}
        .notice-card time{display:block;margin-top:17px;color:#8a958c;font-size:12px}
        .faq-list{max-width:900px;margin:0 auto}
        .faq-item{border-top:1px solid var(--line)}
        .faq-item:last-child{border-bottom:1px solid var(--line)}
        .faq-question{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;padding:22px 0;border:0;background:transparent;color:var(--text);text-align:left;font-weight:800}
        .faq-question span:last-child{display:grid;place-items:center;width:28px;height:28px;border:1px solid var(--line);border-radius:50%;color:var(--coral);font-size:20px;line-height:1;transition:transform var(--ease),background var(--ease)}
        .faq-question[aria-expanded="true"] span:last-child{transform:rotate(45deg);background:var(--lime);color:var(--ink);border-color:var(--lime)}
        .faq-answer{display:none;max-width:780px;padding:0 50px 22px 0;color:var(--muted);font-size:14px}
        .faq-answer.open{display:block}
        .cta{padding:70px 0;background:var(--lime)}
        .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
        .cta h2{max-width:650px;margin:0;font-size:clamp(28px,4vw,46px);line-height:1.2;letter-spacing:-.045em}
        .cta p{max-width:520px;margin:13px 0 0;color:#48513d}
        .cta .btn{background:var(--ink);color:var(--white)}
        .cta .btn:hover{background:var(--ink-soft);transform:translateY(-2px)}
        .site-footer{padding:65px 0 24px;background:var(--ink);color:var(--white)}
        .footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:45px;padding-bottom:52px}
        .footer-brand p{max-width:310px;margin:18px 0 0;color:#aeb8af;font-size:14px}
        .footer-title{margin:0 0 15px;color:var(--lime);font-size:14px}
        .footer-links{display:grid;gap:8px}
        .footer-links a{color:#c2cbc4;font-size:14px;transition:color var(--ease),padding-left var(--ease)}
        .footer-links a:hover{padding-left:4px;color:var(--lime)}
        .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:22px;border-top:1px solid var(--line-dark);color:#8f9b91;font-size:12px}
        .footer-bottom a{color:#dce7dc;font-weight:800}
        :focus-visible{outline:3px solid rgba(201,244,90,.75);outline-offset:4px}
        @media (max-width:1024px){
            .container{width:min(var(--container),calc(100% - 48px))}
            .header-inner{gap:16px}
            .brand{min-width:220px}
            .main-nav a{padding:0 8px;font-size:13px}
            .main-nav a:after{right:8px;left:8px}
            .hero-grid{gap:38px}
            .timeline-wrap{grid-template-columns:1fr}
            .side-card{max-width:none}
        }
        @media (max-width:768px){
            .container{width:calc(100% - 36px)}
            .header-inner{min-height:72px}
            .brand{min-width:0;flex:1}
            .brand-name{font-size:15px}
            .header-cta{display:none}
            .menu-toggle{display:block}
            .main-nav{display:none;position:absolute;top:72px;right:18px;left:18px;z-index:30;flex-direction:column;gap:0;padding:10px;border:1px solid var(--line-dark);border-radius:14px;background:var(--ink-soft);box-shadow:var(--shadow)}
            .main-nav.open{display:flex}
            .main-nav a{min-height:48px;padding:0 14px;border-radius:8px}
            .main-nav a:after{right:14px;bottom:9px;left:14px}
            .notice-bar{font-size:12px}
            .hero{padding:65px 0 70px}
            .hero-grid{grid-template-columns:1fr}
            .hero h1{font-size:clamp(36px,11vw,54px)}
            .hero p{font-size:16px}
            .section{padding:72px 0}
            .section-head{display:block;margin-bottom:28px}
            .section-head p{margin-top:15px}
            .section-head .text-link{margin-top:20px}
            .timeline{padding-left:24px}
            .timeline-item{grid-template-columns:1fr;gap:4px;padding-bottom:25px}
            .timeline-item:before{left:-20px}
            .notice-grid{grid-template-columns:1fr}
            .cta-inner{display:block}
            .cta .btn{margin-top:25px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:35px}
            .footer-brand{grid-column:1/-1}
            .footer-bottom{display:block}
            .footer-bottom span{display:block;margin-top:8px}
        }
        @media (max-width:520px){
            .container{width:calc(100% - 28px)}
            .brand-mark{width:30px;height:30px;flex-basis:30px}
            .brand-mark:before{top:8px;left:8px}
            .brand-mark:after{top:16px;left:8px}
            .hero-actions{display:grid}
            .hero-actions .btn{width:100%}
            .hero-panel{padding:22px}
            .timeline-card,.notice-card{padding:20px}
            .faq-question{font-size:15px}
            .footer-grid{grid-template-columns:1fr}
            .footer-brand{grid-column:auto}
            .footer-bottom{font-size:11px}
        }

/* roulang page: category5 */
:root {
            --ink: #171b19;
            --ink-soft: #222824;
            --panel: #f2f3ec;
            --panel-strong: #e7eadf;
            --paper: #fbfcf7;
            --lime: #c9f45a;
            --lime-deep: #9bcf2e;
            --coral: #e8785f;
            --text: #202622;
            --muted: #69736b;
            --line: rgba(32, 38, 34, .13);
            --line-dark: rgba(255,255,255,.14);
            --white: #fffef8;
            --shadow: 0 18px 48px rgba(19, 27, 22, .12);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --container: 1220px;
            --ease: 220ms ease;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--paper);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        button, input { font: inherit; }
        button { cursor: pointer; }
        img { display: block; max-width: 100%; }
        .container {
            width: min(var(--container), calc(100% - 64px));
            margin: 0 auto;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--lime-deep);
            font-size: 12px;
            font-weight: 900;
            letter-spacing: .14em;
        }
        .eyebrow::before {
            content: "";
            width: 24px;
            height: 2px;
            background: currentColor;
        }
        .eyebrow.light { color: var(--lime); }

        .section { padding: 96px 0; }
        .section-head {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 28px;
            margin-bottom: 38px;
        }
        .section-head h2 {
            max-width: 680px;
            margin: 10px 0 0;
            font-size: clamp(30px, 4vw, 48px);
            line-height: 1.16;
            letter-spacing: -.045em;
        }
        .section-head p {
            max-width: 410px;
            margin: 0;
            color: var(--muted);
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--text);
            font-weight: 800;
            white-space: nowrap;
            transition: color var(--ease), gap var(--ease);
        }
        .text-link span { color: var(--coral); font-size: 20px; }
        .text-link:hover { color: var(--lime-deep); gap: 14px; }

        .site-header {
            position: relative;
            z-index: 20;
            background: var(--ink);
            color: var(--white);
        }
        .header-inner {
            min-height: 82px;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: 250px;
            font-weight: 900;
            letter-spacing: -.035em;
        }
        .brand-mark {
            position: relative;
            width: 34px;
            height: 34px;
            flex: 0 0 34px;
            background: var(--lime);
            border-radius: 9px 15px 9px 15px;
            transform: rotate(-8deg);
        }
        .brand-mark::before,
        .brand-mark::after {
            content: "";
            position: absolute;
            background: var(--ink);
        }
        .brand-mark::before { width: 16px; height: 4px; top: 9px; left: 9px; }
        .brand-mark::after { width: 10px; height: 4px; top: 18px; left: 9px; }
        .brand-name { font-size: 17px; line-height: 1.2; }
        .brand-name small {
            display: block;
            color: #9fa9a0;
            font-size: 10px;
            font-weight: 600;
            letter-spacing: .08em;
            margin-top: 3px;
        }
        .main-nav {
            display: flex;
            align-items: stretch;
            gap: 4px;
            margin-left: auto;
        }
        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 82px;
            padding: 0 13px;
            color: #c6cdc7;
            font-size: 14px;
            font-weight: 700;
            transition: color var(--ease);
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            right: 13px;
            bottom: 17px;
            left: 13px;
            height: 3px;
            background: var(--lime);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--ease);
        }
        .main-nav a:hover,
        .main-nav a.active { color: var(--white); }
        .main-nav a:hover::after,
        .main-nav a.active::after { transform: scaleX(1); }
        .header-cta,
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 20px;
            border: 1px solid transparent;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 900;
            transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease), box-shadow var(--ease);
        }
        .header-cta {
            color: var(--ink);
            background: var(--lime);
            white-space: nowrap;
        }
        .header-cta:hover,
        .btn-primary:hover {
            color: var(--ink);
            background: #ddff81;
            transform: translateY(-2px);
            box-shadow: 0 9px 22px rgba(201,244,90,.2);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            color: var(--white);
            background: transparent;
            border: 1px solid var(--line-dark);
            border-radius: 9px;
        }
        .menu-toggle:focus,
        .btn:focus,
        .search-form input:focus,
        .faq-question:focus {
            outline: 3px solid rgba(201,244,90,.45);
            outline-offset: 3px;
        }

        .notice-bar {
            background: var(--ink-soft);
            color: #c6cdc7;
            border-top: 1px solid var(--line-dark);
            border-bottom: 1px solid var(--line-dark);
            font-size: 13px;
        }
        .notice-bar .container {
            min-height: 38px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .notice-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--lime);
            box-shadow: 0 0 0 4px rgba(201,244,90,.12);
        }
        .notice-bar strong { color: var(--lime); }

        .page-hero {
            position: relative;
            overflow: hidden;
            padding: 92px 0 86px;
            color: var(--white);
            background:
                linear-gradient(135deg, rgba(23,27,25,.98), rgba(34,40,36,.96)),
                var(--ink);
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            opacity: .25;
            background-image:
                linear-gradient(rgba(201,244,90,.16) 1px, transparent 1px),
                linear-gradient(90deg, rgba(201,244,90,.16) 1px, transparent 1px);
            background-size: 42px 42px;
            mask-image: linear-gradient(90deg, #000, transparent 78%);
        }
        .page-hero::after {
            content: "";
            position: absolute;
            width: 330px;
            height: 330px;
            right: -100px;
            top: -120px;
            border: 1px solid rgba(201,244,90,.3);
            border-radius: 50%;
            box-shadow: 0 0 0 24px rgba(201,244,90,.04), 0 0 0 48px rgba(201,244,90,.03);
        }
        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 820px;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 9px;
            margin-bottom: 30px;
            color: #aeb7af;
            font-size: 13px;
        }
        .breadcrumb a:hover { color: var(--lime); }
        .breadcrumb .current { color: var(--white); }
        .page-hero h1 {
            max-width: 850px;
            margin: 14px 0 20px;
            font-size: clamp(38px, 6vw, 68px);
            line-height: 1.08;
            letter-spacing: -.06em;
        }
        .page-hero p {
            max-width: 700px;
            margin: 0;
            color: #c6cec7;
            font-size: 18px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 30px;
        }
        .hero-meta span {
            padding: 7px 12px;
            color: #dce4da;
            border: 1px solid rgba(255,255,255,.16);
            border-radius: 999px;
            font-size: 13px;
        }
        .hero-meta span:first-child {
            color: var(--ink);
            background: var(--lime);
            border-color: var(--lime);
        }

        .search-section { padding: 40px 0 0; }
        .search-panel {
            position: relative;
            display: grid;
            grid-template-columns: 1fr auto;
            align-items: center;
            gap: 22px;
            padding: 28px 30px;
            background: var(--panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }
        .search-copy h2 {
            margin: 0 0 5px;
            font-size: 22px;
            letter-spacing: -.025em;
        }
        .search-copy p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
        }
        .search-form {
            display: flex;
            min-width: min(100%, 500px);
        }
        .search-form input {
            width: 100%;
            min-height: 50px;
            padding: 0 17px;
            color: var(--text);
            background: var(--paper);
            border: 1px solid rgba(32,38,34,.2);
            border-right: 0;
            border-radius: 10px 0 0 10px;
        }
        .search-form input::placeholder { color: #89928a; }
        .search-form button {
            min-width: 92px;
            color: var(--ink);
            background: var(--lime);
            border: 1px solid var(--lime);
            border-radius: 0 10px 10px 0;
            font-weight: 900;
            transition: background var(--ease), transform var(--ease);
        }
        .search-form button:hover { background: #ddff81; }

        .quick-section { padding: 80px 0 96px; }
        .quick-grid {
            display: grid;
            grid-template-columns: 1.25fr 1fr 1fr 1.15fr;
            gap: 14px;
        }
        .quick-card {
            min-height: 178px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 23px;
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
        }
        .quick-card:nth-child(2) { background: var(--ink); color: var(--white); }
        .quick-card:nth-child(3) { background: var(--panel-strong); }
        .quick-card:nth-child(4) { border-top: 4px solid var(--coral); }
        .quick-card:hover {
            transform: translateY(-4px);
            border-color: var(--lime-deep);
            box-shadow: var(--shadow);
        }
        .quick-icon {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: var(--lime);
            border-radius: 9px;
            font-weight: 900;
        }
        .quick-card h3 {
            margin: 22px 0 4px;
            font-size: 20px;
            letter-spacing: -.03em;
        }
        .quick-card p {
            margin: 0;
            color: var(--muted);
            font-size: 13px;
        }
        .quick-card:nth-child(2) p { color: #b7c0b8; }
        .quick-arrow {
            align-self: flex-end;
            color: var(--coral);
            font-size: 23px;
            line-height: 1;
        }

        .help-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 310px;
            gap: 60px;
            align-items: start;
        }
        .faq-group + .faq-group { margin-top: 44px; }
        .faq-group-title {
            display: flex;
            align-items: center;
            gap: 13px;
            margin: 0 0 16px;
            font-size: 22px;
            letter-spacing: -.03em;
        }
        .faq-group-title::before {
            content: "";
            width: 8px;
            height: 26px;
            background: var(--lime);
            border-radius: 4px;
        }
        .faq-list {
            overflow: hidden;
            border-top: 1px solid var(--line);
        }
        .faq-item { border-bottom: 1px solid var(--line); }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 21px 0;
            color: var(--text);
            background: transparent;
            border: 0;
            text-align: left;
            font-weight: 800;
        }
        .faq-question:hover { color: var(--lime-deep); }
        .faq-symbol {
            position: relative;
            width: 27px;
            height: 27px;
            flex: 0 0 27px;
            border: 1px solid var(--line);
            border-radius: 50%;
        }
        .faq-symbol::before,
        .faq-symbol::after {
            content: "";
            position: absolute;
            background: currentColor;
            transition: transform var(--ease);
        }
        .faq-symbol::before { width: 10px; height: 2px; left: 8px; top: 12px; }
        .faq-symbol::after { width: 2px; height: 10px; left: 12px; top: 8px; }
        .faq-item.open .faq-symbol {
            color: var(--lime-deep);
            border-color: var(--lime-deep);
        }
        .faq-item.open .faq-symbol::after { transform: rotate(90deg); }
        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows 260ms ease;
        }
        .faq-answer > div { overflow: hidden; }
        .faq-item.open .faq-answer { grid-template-rows: 1fr; }
        .faq-answer p {
            margin: -3px 45px 21px 0;
            color: var(--muted);
            font-size: 15px;
        }

        .side-stack {
            position: sticky;
            top: 24px;
            display: grid;
            gap: 16px;
        }
        .side-card {
            padding: 24px;
            background: var(--panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
        }
        .side-card.dark {
            color: var(--white);
            background: var(--ink);
            border-color: var(--ink);
        }
        .side-card h3 {
            margin: 0 0 9px;
            font-size: 19px;
        }
        .side-card p {
            margin: 0 0 18px;
            color: var(--muted);
            font-size: 14px;
        }
        .side-card.dark p { color: #b8c1b9; }
        .side-links {
            display: grid;
            gap: 3px;
        }
        .side-links a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            font-size: 14px;
            font-weight: 800;
            transition: color var(--ease), padding var(--ease);
        }
        .side-card.dark .side-links a { border-color: var(--line-dark); }
        .side-links a:last-child { border-bottom: 0; }
        .side-links a:hover { padding-left: 5px; color: var(--lime-deep); }
        .side-card.dark .side-links a:hover { color: var(--lime); }
        .side-card .btn { width: 100%; }
        .btn-primary { color: var(--ink); background: var(--lime); }
        .btn-outline {
            color: var(--text);
            background: transparent;
            border-color: rgba(32,38,34,.25);
        }
        .btn-outline:hover {
            color: var(--text);
            border-color: var(--lime-deep);
            background: rgba(201,244,90,.2);
            transform: translateY(-2px);
        }
        .side-card.dark .btn-outline {
            color: var(--white);
            border-color: var(--line-dark);
        }
        .side-card.dark .btn-outline:hover { color: var(--ink); background: var(--lime); }

        .process-section {
            color: var(--white);
            background: var(--ink-soft);
        }
        .process-section .section-head p { color: #b9c2ba; }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .process-card {
            position: relative;
            min-height: 205px;
            padding: 26px;
            border: 1px solid var(--line-dark);
            border-radius: var(--radius-md);
            background: rgba(255,255,255,.035);
        }
        .process-card::after {
            content: "→";
            position: absolute;
            right: 22px;
            top: 20px;
            color: var(--lime);
            font-size: 24px;
        }
        .process-card:last-child::after { content: "✓"; }
        .process-number {
            display: inline-grid;
            place-items: center;
            width: 40px;
            height: 40px;
            color: var(--ink);
            background: var(--lime);
            border-radius: 10px;
            font-weight: 900;
        }
        .process-card h3 { margin: 26px 0 7px; font-size: 19px; }
        .process-card p { margin: 0; color: #b9c2ba; font-size: 14px; }

        .bottom-grid {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 18px;
        }
        .update-panel,
        .cta-panel {
            padding: 31px;
            border-radius: var(--radius-lg);
        }
        .update-panel {
            background: var(--panel);
            border: 1px solid var(--line);
        }
        .update-panel h2,
        .cta-panel h2 {
            margin: 10px 0 12px;
            font-size: clamp(25px, 3vw, 35px);
            line-height: 1.2;
            letter-spacing: -.04em;
        }
        .update-panel p,
        .cta-panel p { margin: 0; color: var(--muted); }
        .update-list {
            display: grid;
            gap: 0;
            margin-top: 19px;
            border-top: 1px solid var(--line);
        }
        .update-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 15px;
            padding: 13px 0;
            border-bottom: 1px solid var(--line);
            font-weight: 800;
            font-size: 14px;
        }
        .update-list a span { color: var(--coral); font-size: 18px; }
        .update-list a:hover { color: var(--lime-deep); }
        .cta-panel {
            position: relative;
            overflow: hidden;
            color: var(--ink);
            background: var(--lime);
        }
        .cta-panel::after {
            content: "";
            position: absolute;
            width: 190px;
            height: 190px;
            right: -60px;
            bottom: -80px;
            border: 22px solid rgba(23,27,25,.12);
            border-radius: 50%;
        }
        .cta-panel p { color: rgba(23,27,25,.72); max-width: 400px; }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .cta-panel .btn-primary {
            background: var(--ink);
            color: var(--white);
        }
        .cta-panel .btn-primary:hover { background: var(--ink-soft); }
        .cta-panel .btn-outline { border-color: rgba(23,27,25,.3); }

        .site-footer {
            padding: 66px 0 25px;
            color: #c6cdc7;
            background: var(--ink);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 35px;
            padding-bottom: 54px;
        }
        .footer-brand .brand { color: var(--white); }
        .footer-brand p {
            max-width: 320px;
            margin: 18px 0 0;
            color: #9fa9a0;
            font-size: 14px;
        }
        .footer-title {
            margin: 4px 0 14px;
            color: var(--white);
            font-size: 14px;
        }
        .footer-links { display: grid; gap: 8px; }
        .footer-links a {
            color: #9fa9a0;
            font-size: 14px;
            transition: color var(--ease), padding var(--ease);
        }
        .footer-links a:hover { padding-left: 4px; color: var(--lime); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding-top: 22px;
            border-top: 1px solid var(--line-dark);
            color: #89948b;
            font-size: 12px;
        }
        .footer-bottom a { color: var(--white); font-weight: 800; }
        .footer-bottom a:hover { color: var(--lime); }

        @media (max-width: 1100px) {
            .main-nav a { padding: 0 8px; }
            .main-nav a::after { right: 8px; left: 8px; }
            .brand { min-width: 220px; }
            .quick-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 900px) {
            .container { width: min(var(--container), calc(100% - 42px)); }
            .header-inner { min-height: 72px; }
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                right: 21px;
                left: 21px;
                padding: 12px;
                background: var(--ink-soft);
                border: 1px solid var(--line-dark);
                border-radius: 0 0 14px 14px;
                box-shadow: var(--shadow);
            }
            .main-nav.open { display: grid; }
            .main-nav a { min-height: 48px; padding: 0 14px; }
            .main-nav a::after { right: 14px; bottom: 8px; left: 14px; }
            .menu-toggle { display: block; margin-left: auto; }
            .header-cta { display: none; }
            .search-panel,
            .help-layout,
            .bottom-grid { grid-template-columns: 1fr; }
            .search-form { min-width: 0; }
            .side-stack { position: static; grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .section { padding: 72px 0; }
            .page-hero { padding: 70px 0 65px; }
            .section-head { display: block; margin-bottom: 28px; }
            .section-head p { margin-top: 14px; }
            .section-head .text-link { margin-top: 17px; }
            .process-grid { grid-template-columns: 1fr; }
            .process-card { min-height: auto; }
            .side-stack { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .container { width: min(var(--container), calc(100% - 30px)); }
            .brand { min-width: 0; }
            .brand-name { font-size: 14px; }
            .brand-name small { font-size: 9px; }
            .page-hero h1 { font-size: 40px; }
            .page-hero p { font-size: 16px; }
            .hero-meta span { font-size: 12px; }
            .search-panel { padding: 22px 18px; }
            .search-form { display: grid; grid-template-columns: 1fr auto; }
            .search-form input { border-right: 1px solid rgba(32,38,34,.2); border-radius: 10px 0 0 10px; }
            .search-form button { min-width: 76px; }
            .quick-grid { grid-template-columns: 1fr; }
            .quick-card { min-height: 155px; }
            .faq-question { padding: 18px 0; }
            .faq-answer p { margin-right: 0; }
            .update-panel, .cta-panel { padding: 24px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 25px 18px; }
            .footer-bottom { display: grid; gap: 8px; }
        }

/* roulang page: category1 */
:root {
            --ink: #171b19;
            --ink-soft: #222824;
            --panel: #f2f3ec;
            --panel-strong: #e7eadf;
            --paper: #fbfcf7;
            --lime: #c9f45a;
            --lime-deep: #9bcf2e;
            --coral: #e8785f;
            --text: #202622;
            --muted: #69736b;
            --line: rgba(32, 38, 34, .13);
            --line-dark: rgba(255,255,255,.14);
            --white: #fffef8;
            --shadow: 0 18px 48px rgba(19, 27, 22, .12);
            --shadow-soft: 0 10px 30px rgba(19, 27, 22, .08);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --container: 1220px;
            --ease: 220ms ease;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--paper);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        button, input { font: inherit; }
        button { cursor: pointer; }
        img { display: block; max-width: 100%; }
        .container {
            width: min(var(--container), calc(100% - 64px));
            margin: 0 auto;
        }

        .site-header {
            position: relative;
            z-index: 20;
            background: var(--ink);
            color: var(--white);
        }
        .header-inner {
            min-height: 82px;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: 250px;
            font-weight: 900;
            letter-spacing: -.035em;
        }
        .brand-mark {
            position: relative;
            width: 34px;
            height: 34px;
            flex: 0 0 34px;
            background: var(--lime);
            border-radius: 9px 15px 9px 15px;
            transform: rotate(-8deg);
        }
        .brand-mark::before,
        .brand-mark::after {
            content: "";
            position: absolute;
            background: var(--ink);
        }
        .brand-mark::before { width: 16px; height: 4px; top: 9px; left: 9px; }
        .brand-mark::after { width: 10px; height: 4px; top: 18px; left: 9px; }
        .brand-name { font-size: 17px; line-height: 1.2; }
        .main-nav {
            display: flex;
            align-items: stretch;
            gap: 4px;
            margin-left: auto;
        }
        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 82px;
            padding: 0 13px;
            color: #c6cdc7;
            font-size: 14px;
            font-weight: 700;
            transition: color var(--ease);
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            right: 13px;
            bottom: 17px;
            left: 13px;
            height: 3px;
            background: var(--lime);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--ease);
        }
        .main-nav a:hover,
        .main-nav a.active { color: var(--white); }
        .main-nav a:hover::after,
        .main-nav a.active::after { transform: scaleX(1); }
        .header-cta,
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 20px;
            border: 1px solid transparent;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 900;
            transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease), box-shadow var(--ease);
        }
        .header-cta {
            color: var(--ink);
            background: var(--lime);
            white-space: nowrap;
        }
        .header-cta:hover,
        .btn-primary:hover {
            color: var(--ink);
            background: #ddff81;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(201,244,90,.2);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid var(--line-dark);
            border-radius: 10px;
            color: var(--white);
            background: transparent;
        }
        .menu-toggle span,
        .menu-toggle::before,
        .menu-toggle::after {
            display: block;
            width: 20px;
            height: 2px;
            margin: 4px auto;
            background: currentColor;
            content: "";
        }
        .update-strip {
            background: var(--lime);
            color: var(--ink);
            font-size: 13px;
            font-weight: 800;
        }
        .update-strip .container {
            min-height: 34px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .update-strip a { text-decoration: underline; text-underline-offset: 3px; }

        .hero {
            position: relative;
            overflow: hidden;
            padding: 78px 0 84px;
            color: var(--white);
            background:
                linear-gradient(135deg, rgba(23,27,25,.98), rgba(34,40,36,.96)),
                var(--ink);
        }
        .hero::before {
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(201,244,90,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(201,244,90,.06) 1px, transparent 1px);
            background-size: 46px 46px;
            opacity: .7;
            content: "";
        }
        .hero::after {
            position: absolute;
            right: -140px;
            bottom: -180px;
            width: 520px;
            height: 520px;
            border: 1px solid rgba(201,244,90,.22);
            border-radius: 50%;
            box-shadow: 0 0 0 30px rgba(201,244,90,.035), 0 0 0 62px rgba(201,244,90,.025);
            content: "";
        }
        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1.12fr) minmax(360px, .88fr);
            align-items: center;
            gap: 72px;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--lime);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .14em;
        }
        .eyebrow::before {
            width: 24px;
            height: 2px;
            background: currentColor;
            content: "";
        }
        .hero h1 {
            max-width: 700px;
            margin: 16px 0 20px;
            font-size: clamp(38px, 5vw, 68px);
            line-height: 1.1;
            letter-spacing: -.06em;
        }
        .hero-copy {
            max-width: 650px;
            margin: 0;
            color: #c5cec6;
            font-size: 18px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 30px;
        }
        .btn-primary { color: var(--ink); background: var(--lime); }
        .btn-secondary {
            color: var(--white);
            background: transparent;
            border-color: rgba(255,255,255,.28);
        }
        .btn-secondary:hover {
            color: var(--ink);
            background: var(--white);
            border-color: var(--white);
            transform: translateY(-2px);
        }
        .hero-note {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 34px;
        }
        .hero-note span {
            padding: 6px 11px;
            border: 1px solid rgba(255,255,255,.17);
            border-radius: 999px;
            color: #c8d0c9;
            font-size: 12px;
        }

        .news-board {
            position: relative;
            min-height: 330px;
            padding: 28px;
            border: 1px solid rgba(255,255,255,.16);
            border-radius: var(--radius-lg);
            background: rgba(255,255,255,.055);
            box-shadow: var(--shadow);
        }
        .news-board::before {
            position: absolute;
            top: 18px;
            right: 18px;
            width: 44px;
            height: 44px;
            border-top: 3px solid var(--lime);
            border-right: 3px solid var(--lime);
            content: "";
        }
        .board-label {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 18px;
            border-bottom: 1px solid rgba(255,255,255,.14);
            color: #d7dfd8;
            font-size: 13px;
            font-weight: 800;
        }
        .board-label strong { color: var(--lime); font-size: 12px; letter-spacing: .08em; }
        .board-main {
            padding: 32px 0 24px;
            border-bottom: 1px solid rgba(255,255,255,.14);
        }
        .board-main small { color: var(--coral); font-weight: 800; }
        .board-main h2 {
            margin: 9px 0 8px;
            font-size: 28px;
            line-height: 1.25;
            letter-spacing: -.04em;
        }
        .board-main p { margin: 0; color: #aeb9b0; font-size: 14px; }
        .board-foot {
            display: flex;
            justify-content: space-between;
            gap: 14px;
            padding-top: 18px;
            color: #aeb9b0;
            font-size: 12px;
        }
        .board-foot b { color: var(--white); }

        .section { padding: 96px 0; }
        .section-head {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 28px;
            margin-bottom: 38px;
        }
        .section-head h2 {
            max-width: 680px;
            margin: 10px 0 0;
            font-size: clamp(30px, 4vw, 48px);
            line-height: 1.16;
            letter-spacing: -.045em;
        }
        .section-head p { max-width: 410px; margin: 0; color: var(--muted); }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--text);
            font-weight: 800;
            white-space: nowrap;
            transition: color var(--ease), gap var(--ease);
        }
        .text-link span { color: var(--coral); font-size: 20px; }
        .text-link:hover { gap: 14px; color: var(--lime-deep); }

        .category-rail {
            display: grid;
            grid-template-columns: 1.25fr 1fr 1fr 1fr;
            gap: 12px;
        }
        .category-item {
            min-height: 142px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 22px;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: var(--panel);
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease), background var(--ease);
        }
        .category-item:first-child { background: var(--ink); color: var(--white); }
        .category-item:hover {
            transform: translateY(-4px);
            border-color: var(--lime-deep);
            box-shadow: var(--shadow-soft);
        }
        .category-item .item-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .category-item .item-icon {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            border-radius: 9px;
            color: var(--ink);
            background: var(--lime);
            font-size: 17px;
            font-weight: 900;
        }
        .category-item em { color: var(--coral); font-size: 12px; font-style: normal; font-weight: 800; }
        .category-item h3 { margin: 18px 0 0; font-size: 18px; }
        .category-item p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
        .category-item:first-child p { color: #aeb9b0; }
        .arrow { color: var(--coral); font-size: 22px; }

        .content-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
            gap: 24px;
            align-items: start;
        }
        .featured-news {
            min-height: 390px;
            display: flex;
            flex-direction: column;
            justify-content: end;
            padding: 34px;
            overflow: hidden;
            border-radius: var(--radius-lg);
            color: var(--white);
            background:
                linear-gradient(180deg, rgba(23,27,25,.05), rgba(23,27,25,.96)),
                radial-gradient(circle at 75% 25%, rgba(201,244,90,.48), transparent 24%),
                #303b32;
            box-shadow: var(--shadow);
        }
        .featured-news .badge { align-self: flex-start; margin-bottom: auto; }
        .featured-news h3 {
            max-width: 680px;
            margin: 20px 0 10px;
            font-size: clamp(26px, 3.5vw, 42px);
            line-height: 1.2;
            letter-spacing: -.05em;
        }
        .featured-news p { max-width: 600px; margin: 0; color: #c4cec4; }
        .featured-meta { display: flex; gap: 16px; margin-top: 24px; color: #aeb9b0; font-size: 13px; }
        .badge {
            display: inline-flex;
            align-items: center;
            min-height: 25px;
            padding: 0 9px;
            border-radius: 999px;
            color: var(--ink);
            background: var(--lime);
            font-size: 11px;
            font-weight: 900;
        }
        .badge.coral { color: var(--white); background: var(--coral); }
        .badge.dark { color: var(--white); background: var(--ink-soft); }

        .timeline {
            padding: 8px 0;
            border-top: 1px solid var(--line);
        }
        .timeline-item {
            position: relative;
            display: grid;
            grid-template-columns: 94px 1fr;
            gap: 18px;
            padding: 22px 0 22px 18px;
            border-bottom: 1px solid var(--line);
            transition: background var(--ease), padding var(--ease);
        }
        .timeline-item::before {
            position: absolute;
            top: 30px;
            left: 0;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--lime-deep);
            content: "";
        }
        .timeline-item:hover { padding-left: 24px; background: rgba(231,234,223,.55); }
        .timeline-date { color: var(--muted); font-size: 12px; font-weight: 800; }
        .timeline-content h3 { margin: 0 0 5px; font-size: 17px; line-height: 1.4; }
        .timeline-content p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
        .timeline-content a:hover h3 { color: var(--lime-deep); }

        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 28px;
            padding: 12px;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: var(--panel);
        }
        .filter-tabs { display: flex; flex-wrap: wrap; gap: 7px; }
        .filter-tab {
            min-height: 38px;
            padding: 0 14px;
            border: 0;
            border-radius: 8px;
            color: var(--muted);
            background: transparent;
            font-size: 13px;
            font-weight: 800;
            transition: background var(--ease), color var(--ease);
        }
        .filter-tab:hover,
        .filter-tab.active { color: var(--ink); background: var(--lime); }
        .filter-status { color: var(--muted); font-size: 13px; }

        .quick-panel {
            padding: 28px;
            border-radius: var(--radius-lg);
            color: var(--white);
            background: var(--ink);
        }
        .quick-panel h3 { margin: 12px 0 8px; font900;
        }
        .quick-panel p { margin: 0 0 22px; color: #b7c1b8; font-size: 14px; }
        .quick-panel .btn { width: 100%; }
        .quick-panel .btn-secondary { border-color: rgba(255,255,255,.22); }

        .feature-strip {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 24px;
        }
        .feature-card {
            padding: 30px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background: var(--panel);
        }
        .feature-card.accent {
            color: var(--white);
            background: var(--ink-soft);
            border-color: transparent;
        }
        .feature-card h3 { margin: 0 0 9px; font-size: 24px; line-height: 1.3; }
        .feature-card p { margin: 0; color: var(--muted); }
        .feature-card.accent p { color: #bdc7be; }
        .feature-list {
            display: grid;
            gap: 13px;
            margin: 22px 0 0;
            padding: 0;
            list-style: none;
        }
        .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #d6ded7;
            font-size: 14px;
        }
        .feature-list li::before {
            width: 8px;
            height: 8px;
            flex: 0 0 8px;
            border-radius: 2px;
            background: var(--lime);
            content: "";
        }

        .faq-section { background: var(--panel); }
        .faq-grid {
            display: grid;
            grid-template-columns: .8fr 1.2fr;
            gap: 60px;
            align-items: start;
        }
        .faq-intro h2 { margin: 12px 0 16px; font-size: clamp(30px, 4vw, 46px); line-height: 1.15; letter-spacing: -.05em; }
        .faq-intro p { margin: 0; color: var(--muted); }
        .faq-list { display: grid; gap: 10px; }
        .faq-item {
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: var(--paper);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
            padding: 0 22px;
            color: var(--text);
            font-weight: 800;
            cursor: pointer;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            color: var(--coral);
            font-size: 22px;
            content: "+";
            transition: transform var(--ease);
        }
        .faq-item[open] summary { color: var(--lime-deep); }
        .faq-item[open] summary::after { transform: rotate(45deg); }
        .faq-answer {
            padding: 0 22px 20px;
            color: var(--muted);
            font-size: 14px;
        }

        .cta-section { padding: 84px 0; }
        .cta-box {
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            padding: 42px 48px;
            border-radius: var(--radius-lg);
            color: var(--ink);
            background: var(--lime);
        }
        .cta-box::after {
            position: absolute;
            right: 28%;
            bottom: -110px;
            width: 250px;
            height: 250px;
            border: 1px solid rgba(23,27,25,.18);
            border-radius: 50%;
            content: "";
        }
        .cta-box > * { position: relative; z-index: 1; }
        .cta-box h2 { margin: 0 0 8px; font-size: clamp(26px, 3vw, 38px); line-height: 1.2; letter-spacing: -.05em; }
        .cta-box p { max-width: 640px; margin: 0; color: rgba(23,27,25,.7); }
        .cta-box .btn {
            flex: 0 0 auto;
            color: var(--white);
            background: var(--ink);
        }
        .cta-box .btn:hover { color: var(--ink); background: var(--white); }

        .site-footer {
            padding: 64px 0 24px;
            color: #d6ded7;
            background: var(--ink);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 42px;
            padding-bottom: 52px;
        }
        .footer-brand .brand { min-width: 0; color: var(--white); }
        .footer-brand p { max-width: 350px; margin: 20px 0 0; color: #9fa9a0; font-size: 14px; }
        .footer-title { margin: 4px 0 16px; color: var(--white); font-size: 14px; }
        .footer-links { display: grid; gap: 8px; }
        .footer-links a { color: #9fa9a0; font-size: 14px; transition: color var(--ease), transform var(--ease); }
        .footer-links a:hover { color: var(--lime); transform: translateX(3px); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding-top: 22px;
            border-top: 1px solid var(--line-dark);
            color: #89958b;
            font-size: 12px;
        }
        .footer-bottom a { color: var(--lime); font-weight: 800; }

        :focus-visible {
            outline: 3px solid var(--lime);
            outline-offset: 3px;
        }

        @media (max-width: 1100px) {
            .header-inner { gap: 15px; }
            .brand { min-width: 220px; }
            .main-nav a { padding: 0 9px; }
            .main-nav a::after { right: 9px; left: 9px; }
            .hero-inner { gap: 40px; }
            .category-rail { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 900px) {
            .container { width: min(var(--container), calc(100% - 42px)); }
            .hero-inner,
            .content-layout,
            .faq-grid { grid-template-columns: 1fr; }
            .hero { padding: 64px 0; }
            .news-board { max-width: 680px; }
            .section { padding: 76px 0; }
            .quick-panel { order: -1; }
            .faq-grid { gap: 34px; }
            .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .header-inner { min-height: 72px; }
            .brand-name { font-size: 15px; }
            .brand { min-width: 0; }
            .main-nav {
                position: absolute;
                top: 72px;
                right: 21px;
                left: 21px;
                display: none;
                flex-direction: column;
                padding: 8px;
                border: 1px solid var(--line-dark);
                border-radius: 14px;
                background: var(--ink-soft);
                box-shadow: var(--shadow);
            }
            .main-nav.open { display: flex; }
            .main-nav a { min-height: 48px; padding: 0 15px; border-radius: 8px; }
            .main-nav a::after { right: 15px; bottom: 8px; left: 15px; }
            .header-cta { display: none; }
            .menu-toggle { display: block; margin-left: auto; }
            .update-strip .container { min-height: 38px; }
            .update-strip span { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
            .section-head { display: block; }
            .section-head p { margin-top: 14px; }
            .section-head .text-link { margin-top: 18px; }
            .filter-bar { align-items: flex-start; flex-direction: column; }
            .feature-strip { grid-template-columns: 1fr; }
            .cta-box { align-items: flex-start; flex-direction: column; padding: 34px 28px; }
            .cta-box .btn { width: 100%; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px 22px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .container { width: min(var(--container), calc(100% - 30px)); }
            .hero { padding: 52px 0 58px; }
            .hero h1 { font-size: 40px; }
            .hero-copy { font-size: 16px; }
            .hero-actions { display: grid; grid-template-columns: 1fr; }
            .hero-actions .btn { width: 100%; }
            .news-board { min-height: 300px; padding: 22px; }
            .board-main h2 { font-size: 23px; }
            .category-rail { grid-template-columns: 1fr; }
            .category-item { min-height: 126px; }
            .featured-news { min-height: 350px; padding: 25px; }
            .featured-news h3 { font-size: 28px; }
            .timeline-item { grid-template-columns: 1fr; gap: 3px; padding-left: 16px; }
            .timeline-item::before { top: 29px; }
            .faq-item summary { min-height: 62px; padding: 0 17px; font-size: 14px; }
            .faq-answer { padding: 0 17px 17px; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { align-items: flex-start; flex-direction: column; gap: 8px; }
        }

/* roulang page: category3 */
:root {
            --ink: #171b19;
            --ink-soft: #222824;
            --panel: #f2f3ec;
            --panel-strong: #e7eadf;
            --paper: #fbfcf7;
            --lime: #c9f45a;
            --lime-deep: #9bcf2e;
            --coral: #e8785f;
            --text: #202622;
            --muted: #69736b;
            --white: #fffef8;
            --line: rgba(32, 38, 34, .13);
            --line-dark: rgba(255,255,255,.14);
            --shadow: 0 18px 48px rgba(19, 27, 22, .12);
            --shadow-soft: 0 10px 30px rgba(19, 27, 22, .08);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --container: 1220px;
            --ease: 220ms ease;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--paper);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        button, input { font: inherit; }
        button { cursor: pointer; }
        img { display: block; max-width: 100%; }
        .container {
            width: min(var(--container), calc(100% - 64px));
            margin: 0 auto;
        }
        .site-header {
            position: relative;
            z-index: 20;
            background: var(--ink);
            color: var(--white);
        }
        .header-inner {
            min-height: 82px;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: 250px;
            font-weight: 900;
            letter-spacing: -.035em;
        }
        .brand-mark {
            position: relative;
            width: 34px;
            height: 34px;
            flex: 0 0 34px;
            background: var(--lime);
            border-radius: 9px 15px 9px 15px;
            transform: rotate(-8deg);
        }
        .brand-mark::before,
        .brand-mark::after {
            content: "";
            position: absolute;
            background: var(--ink);
        }
        .brand-mark::before { width: 16px; height: 4px; top: 9px; left: 9px; }
        .brand-mark::after { width: 10px; height: 4px; top: 18px; left: 9px; }
        .brand-name { font-size: 17px; line-height: 1.2; }
        .brand-name small {
            display: block;
            color: #9fa9a0;
            font-size: 10px;
            font-weight: 600;
            letter-spacing: .08em;
            margin-top: 3px;
        }
        .main-nav {
            display: flex;
            align-items: stretch;
            gap: 4px;
            margin-left: auto;
        }
        .main-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 82px;
            padding: 0 13px;
            color: #c6cdc7;
            font-size: 14px;
            font-weight: 700;
            transition: color var(--ease);
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            right: 13px;
            bottom: 17px;
            left: 13px;
            height: 3px;
            background: var(--lime);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--ease);
        }
        .main-nav a:hover,
        .main-nav a.active { color: var(--white); }
        .main-nav a:hover::after,
        .main-nav a.active::after { transform: scaleX(1); }
        .header-cta,
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 20px;
            border: 1px solid transparent;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 900;
            transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease), box-shadow var(--ease);
        }
        .header-cta {
            color: var(--ink);
            background: var(--lime);
            white-space: nowrap;
        }
        .header-cta:hover,
        .btn-primary:hover {
            color: var(--ink);
            background: #ddff81;
            transform: translateY(-2px);
            box-shadow: 0 9px 20px rgba(201,244,90,.18);
        }
        .menu-toggle {
            display: none;
            width: 46px;
            height: 46px;
            border: 1px solid var(--line-dark);
            border-radius: 10px;
            color: var(--white);
            background: transparent;
        }
        .notice-bar {
            background: #252d28;
            color: #b8c1b9;
            font-size: 12px;
        }
        .notice-inner {
            min-height: 34px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .notice-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--lime);
            box-shadow: 0 0 0 4px rgba(201,244,90,.1);
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--lime-deep);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .14em;
        }
        .eyebrow::before {
            content: "";
            width: 24px;
            height: 2px;
            background: currentColor;
        }
        .breadcrumb-wrap {
            padding: 28px 0 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 11px;
            margin: 0;
            color: var(--muted);
            font-size: 13px;
        }
        .breadcrumb a:hover { color: var(--lime-deep); }
        .breadcrumb .current { color: var(--text); font-weight: 800; }
        .hero {
            position: relative;
            overflow: hidden;
            padding: 70px 0 92px;
        }
        .hero::before {
            content: "";
            position: absolute;
            top: 12px;
            right: -100px;
            width: 480px;
            height: 480px;
            border: 1px solid rgba(155,207,46,.2);
            border-radius: 50%;
            box-shadow: 0 0 0 34px rgba(155,207,46,.035), 0 0 0 68px rgba(155,207,46,.025);
            pointer-events: none;
        }
        .hero-grid {
            position: relative;
            display: grid;
            grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr);
            gap: 70px;
            align-items: center;
        }
        .hero h1 {
            max-width: 720px;
            margin: 18px 0 22px;
            color: var(--ink);
            font-size: clamp(40px, 6vw, 72px);
            line-height: 1.08;
            letter-spacing: -.065em;
        }
        .hero h1 em {
            color: var(--lime-deep);
            font-style: normal;
        }
        .hero-lead {
            max-width: 650px;
            margin: 0;
            color: var(--muted);
            font-size: 18px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 32px;
        }
        .btn-primary {
            color: var(--ink);
            background: var(--lime);
        }
        .btn-secondary {
            color: var(--text);
            border-color: var(--line);
            background: transparent;
        }
        .btn-secondary:hover {
            border-color: var(--lime-deep);
            background: var(--panel);
            transform: translateY(-2px);
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
            margin-top: 30px;
        }
        .meta-chip,
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 800;
        }
        .meta-chip {
            padding: 7px 11px;
            color: var(--muted);
            background: var(--panel);
            border: 1px solid var(--line);
        }
        .meta-chip i {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--lime-deep);
        }
        .hero-board {
            position: relative;
            min-height: 410px;
            padding: 24px;
            overflow: hidden;
            border-radius: var(--radius-lg);
            color: var(--white);
            background: var(--ink);
            box-shadow: var(--shadow);
        }
        .hero-board::after {
            content: "";
            position: absolute;
            right: -50px;
            bottom: -80px;
            width: 270px;
            height: 270px;
            border: 1px solid rgba(201,244,90,.42);
            border-radius: 50%;
        }
        .board-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #aab5ac;
            font-size: 12px;
        }
        .board-status {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--lime);
            font-weight: 800;
        }
        .board-status::before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: currentColor;
        }
        .board-main {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr .72fr;
            gap: 18px;
            align-items: end;
            min-height: 310px;
            padding-top: 55px;
        }
        .board-title {
            margin: 0 0 14px;
            color: var(--lime);
            font-size: 34px;
            line-height: 1.15;
            letter-spacing: -.05em;
        }
        .board-copy {
            max-width: 250px;
            margin: 0;
            color: #b9c2bb;
            font-size: 14px;
        }
        .board-index {
            margin-top: 30px;
            color: #748077;
            font-size: 11px;
            letter-spacing: .14em;
        }
        .data-stack {
            display: grid;
            gap: 9px;
        }
        .data-card {
            padding: 15px;
            border: 1px solid var(--line-dark);
            border-radius: 13px;
            background: rgba(255,255,255,.06);
        }
        .data-card strong {
            display: block;
            color: var(--white);
            font-size: 20px;
            line-height: 1.25;
        }
        .data-card span {
            color: #9da89f;
            font-size: 11px;
        }
        .board-line {
            position: absolute;
            left: 24px;
            right: 24px;
            bottom: 24px;
            height: 1px;
            background: var(--line-dark);
        }
        .section { padding: 96px 0; }
        .section.alt { background: var(--panel); }
        .section-head {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 28px;
            margin-bottom: 38px;
        }
        .section-head h2 {
            max-width: 680px;
            margin: 10px 0 0;
            color: var(--ink);
            font-size: clamp(30px, 4vw, 48px);
            line-height: 1.16;
            letter-spacing: -.045em;
        }
        .section-head p {
            max-width: 420px;
            margin: 0;
            color: var(--muted);
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--text);
            font-weight: 800;
            white-space: nowrap;
            transition: color var(--ease), gap var(--ease);
        }
        .text-link span { color: var(--coral); font-size: 20px; }
        .text-link:hover { color: var(--lime-deep); gap: 14px; }
        .info-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
            gap: 22px;
        }
        .feature-panel {
            min-height: 330px;
            padding: 34px;
            border-radius: var(--radius-lg);
            color: var(--white);
            background: var(--ink);
            position: relative;
            overflow: hidden;
        }
        .feature-panel::before {
            content: "J9";
            position: absolute;
            right: 26px;
            top: 8px;
            color: rgba(201,244,90,.1);
            font-size: 150px;
            line-height: 1;
            font-weight: 900;
            letter-spacing: -.1em;
        }
        .feature-panel > * { position: relative; z-index: 1; }
        .feature-panel h3 {
            max-width: 500px;
            margin: 16px 0 15px;
            color: var(--white);
            font-size: 30px;
            line-height: 1.25;
        }
        .feature-panel p {
            max-width: 520px;
            margin: 0;
            color: #bac3bc;
        }
        .feature-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-top: 42px;
        }
        .feature-number {
            color: var(--lime);
            font-size: 13px;
            font-weight: 900;
            letter-spacing: .12em;
        }
        .arrow-box {
            display: inline-grid;
            place-items: center;
            width: 46px;
            height: 46px;
            border: 1px solid var(--line-dark);
            border-radius: 12px;
            color: var(--lime);
            font-size: 23px;
        }
        .summary-panel {
            padding: 30px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background: var(--paper);
            box-shadow: var(--shadow-soft);
        }
        .summary-panel h3 {
            margin: 0 0 23px;
            color: var(--ink);
            font-size: 20px;
        }
        .summary-list {
            display: grid;
            gap: 0;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .summary-list li {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            padding: 14px 0;
            border-top: 1px solid var(--line);
            color: var(--muted);
            font-size: 14px;
        }
        .summary-list li strong {
            color: var(--text);
            font-weight: 800;
            text-align: right;
        }
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 30px;
        }
        .category-tabs a {
            padding: 9px 15px;
            color: var(--muted);
            border: 1px solid var(--line);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 800;
            transition: all var(--ease);
        }
        .category-tabs a:hover,
        .category-tabs a.active {
            color: var(--ink);
            border-color: var(--lime);
            background: var(--lime);
        }
        .detail-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 16px;
        }
        .detail-card {
            display: grid;
            grid-template-columns: 48px 1fr;
            gap: 18px;
            padding: 24px;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: var(--paper);
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
        }
        .detail-card:hover {
            transform: translateY(-3px);
            border-color: rgba(155,207,46,.6);
            box-shadow: var(--shadow-soft);
        }
        .detail-icon {
            display: grid;
            place-items: center;
            width: 48px;
            height: 48px;
            border-radius: 13px;
            color: var(--ink);
            background: var(--lime);
            font-size: 20px;
            font-weight: 900;
        }
        .detail-card h3 {
            margin: 0 0 6px;
            color: var(--ink);
            font-size: 18px;
        }
        .detail-card p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
        }
        .timeline-layout {
            display: grid;
            grid-template-columns: .75fr 1.25fr;
            gap: 70px;
            align-items: start;
        }
        .timeline-intro h2 {
            margin: 12px 0 18px;
            color: var(--ink);
            font-size: clamp(30px, 4vw, 46px);
            line-height: 1.15;
            letter-spacing: -.05em;
        }
        .timeline-intro p {
            margin: 0;
            color: var(--muted);
        }
        .timeline {
            border-left: 1px solid var(--line);
        }
        .timeline-item {
            position: relative;
            padding: 0 0 30px 30px;
        }
        .timeline-item:last-child { padding-bottom: 0; }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: -5px;
            top: 8px;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--lime-deep);
            box-shadow: 0 0 0 5px var(--panel);
        }
        .timeline-date {
            color: var(--coral);
            font-size: 12px;
            font-weight: 900;
            letter-spacing: .06em;
        }
        .timeline-item h3 {
            margin: 6px 0 5px            color: var(--ink);
            font-size: 18px;
            line-height: 1.4;
        }
        .timeline-item p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: .7fr 1.3fr;
            gap: 70px;
            align-items: start;
        }
        .faq-intro h2 {
            margin: 12px 0 18px;
            color: var(--ink);
            font-size: clamp(30px, 4vw, 46px);
            line-height: 1.15;
            letter-spacing: -.05em;
        }
        .faq-intro p {
            margin: 0;
            color: var(--muted);
        }
        .faq-list {
            display: grid;
            gap: 12px;
        }
        .faq-item {
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: var(--paper);
        }
        .faq-item summary {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 20px 24px;
            color: var(--ink);
            font-weight: 900;
            cursor: pointer;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: "+";
            display: grid;
            place-items: center;
            width: 28px;
            height: 28px;
            flex: 0 0 28px;
            border: 1px solid var(--line);
            border-radius: 50%;
            color: var(--lime-deep);
            font-size: 19px;
            font-weight: 500;
            transition: transform var(--ease), background var(--ease);
        }
        .faq-item[open] summary {
            border-left: 4px solid var(--lime);
            padding-left: 20px;
        }
        .faq-item[open] summary::after {
            content: "−";
            color: var(--ink);
            background: var(--lime);
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 22px 28px;
            color: var(--muted);
            font-size: 14px;
        }
        .cta-panel {
            position: relative;
            overflow: hidden;
            padding: 58px 64px;
            border-radius: var(--radius-lg);
            color: var(--white);
            background: var(--ink);
        }
        .cta-panel::after {
            content: "";
            position: absolute;
            right: 8%;
            top: -100px;
            width: 250px;
            height: 250px;
            border: 1px solid rgba(201,244,90,.3);
            border-radius: 50%;
            box-shadow: 0 0 0 28px rgba(201,244,90,.04), 0 0 0 56px rgba(201,244,90,.025);
        }
        .cta-panel > * { position: relative; z-index: 1; }
        .cta-panel h2 {
            max-width: 670px;
            margin: 12px 0 14px;
            color: var(--white);
            font-size: clamp(30px, 4vw, 48px);
            line-height: 1.15;
            letter-spacing: -.05em;
        }
        .cta-panel p {
            max-width: 650px;
            margin: 0;
            color: #b9c3bb;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 28px;
        }
        .site-footer {
            padding: 68px 0 24px;
            color: #bdc6be;
            background: var(--ink);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 54px;
        }
        .footer-brand .brand {
            min-width: 0;
            color: var(--white);
        }
        .footer-brand p {
            max-width: 310px;
            margin: 22px 0 0;
            color: #8f9b92;
            font-size: 14px;
        }
        .footer-title {
            margin: 5px 0 17px;
            color: var(--white);
            font-size: 14px;
        }
        .footer-links {
            display: grid;
            gap: 9px;
        }
        .footer-links a {
            color: #8f9b92;
            font-size: 14px;
            transition: color var(--ease), transform var(--ease);
        }
        .footer-links a:hover {
            color: var(--lime);
            transform: translateX(3px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding-top: 22px;
            border-top: 1px solid var(--line-dark);
            color: #7f8a81;
            font-size: 12px;
        }
        .footer-bottom a {
            color: var(--lime);
            font-weight: 800;
        }
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(201,244,90,.75);
            outline-offset: 3px;
        }
        @media (max-width: 1100px) {
            .main-nav a { padding: 0 8px; }
            .main-nav a::after { right: 8px; left: 8px; }
            .header-cta { padding: 0 14px; }
            .hero-grid { gap: 40px; }
            .timeline-layout,
            .faq-grid { gap: 38px; }
        }
        @media (max-width: 900px) {
            .header-inner { gap: 15px; }
            .brand { min-width: 215px; }
            .main-nav { gap: 0; }
            .main-nav a { font-size: 13px; padding: 0 6px; }
            .main-nav a::after { right: 6px; left: 6px; }
            .hero-grid,
            .info-layout,
            .timeline-layout,
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .hero-grid { gap: 42px; }
            .hero-board { min-height: 360px; }
            .timeline-intro,
            .faq-intro { max-width: 600px; }
            .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .container { width: min(var(--container), calc(100% - 40px)); }
            .header-inner { min-height: 72px; }
            .brand { min-width: 0; flex: 1; }
            .brand-name { font-size: 15px; }
            .brand-name small { display: none; }
            .main-nav {
                position: absolute;
                top: 72px;
                right: 20px;
                left: 20px;
                display: none;
                padding: 10px;
                border: 1px solid var(--line-dark);
                border-radius: 14px;
                background: var(--ink-soft);
                box-shadow: var(--shadow);
            }
            .main-nav.is-open { display: grid; }
            .main-nav a {
                min-height: 48px;
                padding: 0 14px;
                border-radius: 8px;
            }
            .main-nav a::after {
                right: auto;
                bottom: 10px;
                left: 14px;
                width: 24px;
            }
            .main-nav a:hover,
            .main-nav a.active { background: rgba(255,255,255,.06); }
            .header-cta { display: none; }
            .menu-toggle { display: inline-grid; place-items: center; }
            .hero { padding: 52px 0 66px; }
            .section { padding: 70px 0; }
            .section-head {
                display: block;
                margin-bottom: 28px;
            }
            .section-head p { margin-top: 15px; }
            .section-head .text-link { margin-top: 18px; }
            .hero h1 { font-size: clamp(38px, 11vw, 58px); }
            .hero-lead { font-size: 16px; }
            .hero-board { min-height: 340px; }
            .detail-grid { grid-template-columns: 1fr; }
            .cta-panel { padding: 42px 28px; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; }
            .footer-brand { grid-column: 1 / -1; }
            .footer-bottom { display: grid; gap: 7px; }
        }
        @media (max-width: 520px) {
            .container { width: min(var(--container), calc(100% - 30px)); }
            .brand-name { max-width: 210px; }
            .notice-inner { min-height: 40px; font-size: 11px; }
            .breadcrumb-wrap { padding-top: 20px; }
            .breadcrumb { flex-wrap: wrap; gap: 6px 9px; font-size: 12px; }
            .hero { padding-top: 42px; }
            .hero h1 { margin-top: 14px; font-size: 38px; }
            .hero-actions,
            .cta-actions { display: grid; }
            .hero-actions .btn,
            .cta-actions .btn { width: 100%; }
            .hero-board { min-height: 315px; padding: 20px; }
            .board-main {
                grid-template-columns: 1fr;
                min-height: 260px;
                padding-top: 42px;
            }
            .data-stack {
                grid-template-columns: repeat(3, 1fr);
            }
            .data-card { padding: 10px; }
            .data-card strong { font-size: 16px; }
            .data-card span { font-size: 10px; }
            .board-title { font-size: 29px; }
            .feature-panel,
            .summary-panel { padding: 24px; }
            .feature-panel h3 { font-size: 25px; }
            .detail-card { grid-template-columns: 40px 1fr; gap: 13px; padding: 19px; }
            .detail-icon { width: 40px; height: 40px; font-size: 17px; }
            .faq-item summary { padding: 17px 18px; font-size: 14px; }
            .faq-item[open] summary { padding-left: 14px; }
            .faq-answer { padding: 0 18px 18px 22px; }
            .cta-panel { padding: 34px 22px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-title { margin-top: 0; }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}