/* roulang page: index */
:root {
            --blue: #1769e0;
            --blue-dark: #0e4eaf;
            --blue-soft: #eaf3ff;
            --cyan: #18a6a8;
            --ink: #1f2d3d;
            --muted: #69798c;
            --line: #dce6f0;
            --paper: #ffffff;
            --wash: #f5f8fc;
            --navy: #142b4a;
            --orange: #e28a35;
            --danger: #bd4d4d;
            --radius: 8px;
            --shadow: 0 14px 34px rgba(38, 75, 117, .10);
            --shadow-hover: 0 18px 38px rgba(38, 75, 117, .17);
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--ink);
            background: var(--paper);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
        }
        a { color: inherit; text-decoration: none; }
        img { display: block; max-width: 100%; }
        button, input, select, textarea { font: inherit; }
        button { cursor: pointer; }
        .grid-container { max-width: 1180px; padding-left: 24px; padding-right: 24px; }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 20;
            background: rgba(255,255,255,.97);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 5px 18px rgba(27, 59, 94, .05);
        }
        .nav-wrap {
            min-height: 76px;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            min-width: 245px;
            font-weight: 800;
            color: var(--navy);
            line-height: 1.25;
        }
        .brand-mark {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            border-radius: 7px;
            color: #fff;
            background: var(--blue);
            font-size: 17px;
            box-shadow: 0 7px 14px rgba(23,105,224,.22);
        }
        .brand-name { font-size: 16px; }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 5px;
            flex: 1;
        }
        .main-nav a {
            position: relative;
            padding: 9px 13px;
            color: var(--muted);
            font-size: 14px;
            font-weight: 600;
            transition: color .2s ease, background .2s ease;
        }
        .main-nav a:hover, .main-nav a:focus, .main-nav a.active {
            color: var(--blue);
            background: var(--blue-soft);
        }
        .main-nav a.active::after {
            content: "";
            position: absolute;
            left: 13px;
            right: 13px;
            bottom: 3px;
            height: 2px;
            background: var(--blue);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-search {
            width: 158px;
            height: 38px;
            margin: 0;
            padding: 0 13px 0 36px;
            border: 1px solid var(--line);
            border-radius: 6px;
            color: var(--ink);
            background: var(--wash) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='17' height='17' viewBox='0 0 24 24' fill='none' stroke='%2369798c' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-4-4'/%3E%3C/svg%3E") 11px center no-repeat;
            outline: none;
        }
        .nav-search:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(23,105,224,.12); }
        .button {
            margin: 0;
            border-radius: 6px;
            font-weight: 700;
            transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
        }
        .button.primary {
            background: var(--blue);
            color: #fff;
        }
        .button.primary:hover, .button.primary:focus {
            background: var(--blue-dark);
            color: #fff;
            box-shadow: 0 8px 17px rgba(23,105,224,.22);
            transform: translateY(-1px);
        }
        .button.hollow {
            color: var(--blue);
            border-color: #9dbde9;
            background: #fff;
        }
        .button.hollow:hover, .button.hollow:focus { color: var(--blue-dark); border-color: var(--blue); background: var(--blue-soft); }
        .button:active { transform: translateY(0); }
        .button:disabled { opacity: .5; cursor: not-allowed; transform: none; }
        .mobile-toggle { display: none; }

        .hero {
            position: relative;
            overflow: hidden;
            color: #fff;
            background: var(--navy);
            padding: 76px 0 84px;
        }
        .hero::after {
            content: "";
            position: absolute;
            width: 44%;
            height: 100%;
            right: 0;
            top: 0;
            background: #193c68;
            clip-path: polygon(28% 0,100% 0,100% 100%,0 100%);
            opacity: .72;
        }
        .hero-content { position: relative; z-index: 2; }
        .hero-kicker, .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #79b4ff;
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 0;
        }
        .hero-kicker::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--cyan);
        }
        .hero h1 {
            max-width: 650px;
            margin: 17px 0 18px;
            color: #fff;
            font-size: 48px;
            line-height: 1.22;
            font-weight: 850;
        }
        .hero-copy {
            max-width: 650px;
            margin-bottom: 28px;
            color: #d3e1f2;
            font-size: 17px;
        }
        .hero-buttons { display: flex; gap: 12px; flex-wrap: wrap; }
        .hero-buttons .button.hollow { color: #dbeaff; border-color: #7598c1; background: transparent; }
        .hero-buttons .button.hollow:hover { background: #244a78; color: #fff; }
        .hero-side {
            position: relative;
            z-index: 2;
            padding-left: 35px;
        }
        .route-panel {
            border-left: 1px solid rgba(178,211,244,.38);
            padding: 16px 0 12px 30px;
        }
        .route-line {
            position: absolute;
            left: 7px;
            top: 26px;
            bottom: 22px;
            width: 1px;
            background: #5d88b6;
        }
        .route-item {
            position: relative;
            display: flex;
            gap: 14px;
            margin: 0 0 20px;
        }
        .route-dot {
            width: 15px;
            height: 15px;
            flex: 0 0 15px;
            margin-top: 6px;
            border: 3px solid var(--navy);
            border-radius: 50%;
            background: var(--cyan);
            box-shadow: 0 0 0 1px #79b4ff;
        }
        .route-item strong { display: block; color: #fff; font-size: 15px; }
        .route-item span { display: block; color: #a9c3df; font-size: 13px; }
        .route-number { color: #79b4ff; font-size: 12px; font-weight: 800; }

        .section { padding: 92px 0; }
        .section.alt { background: var(--wash); }
        .section-head { max-width: 650px; margin-bottom: 42px; }
        .section-kicker { color: var(--blue); }
        .section-title {
            margin: 10px 0 12px;
            color: var(--navy);
            font-size: 34px;
            line-height: 1.3;
            font-weight: 800;
        }
        .section-intro { margin: 0; color: var(--muted); font-size: 16px; }
        .service-layout { align-items: start; }
        .service-aside {
            position: sticky;
            top: 105px;
            padding-right: 28px;
        }
        .service-aside p { color: var(--muted); }
        .service-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
        .service-item {
            display: flex;
            gap: 17px;
            padding: 22px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow);
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }
        .service-item:hover { transform: translateY(-3px); border-color: #a9c8ec; box-shadow: var(--shadow-hover); }
        .service-icon {
            width: 39px;
            height: 39px;
            flex: 0 0 39px;
            display: grid;
            place-items: center;
            color: var(--blue);
            border-radius: 7px;
            background: var(--blue-soft);
            font-weight: 800;
        }
        .service-item h3 { margin: 0 0 4px; color: var(--navy); font-size: 17px; }
        .service-item p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
        .service-item a { display: inline-block; margin-top: 8px; color: var(--blue); font-size: 13px; font-weight: 700; }

        .metrics-band {
            display: flex;
            align-items: stretch;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .metric {
            flex: 1;
            padding: 15px 28px 15px 0;
            border-right: 1px solid var(--line);
        }
        .metric:not(:first-child) { padding-left: 28px; }
        .metric:last-child { border-right: 0; }
        .metric strong { display: block; color: var(--navy); font-size: 31px; line-height: 1.2; }
        .metric span { color: var(--muted); font-size: 14px; }

        .case-layout { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; align-items: stretch; }
        .case-main, .case-small {
            overflow: hidden;
            position: relative;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow);
        }
        .case-main { min-height: 385px; }
        .case-small { display: grid; grid-template-columns: 120px 1fr; min-height: 130px; }
        .case-side { display: grid; gap: 18px; }
        .visual-cover {
            position: relative;
            min-height: 170px;
            background-color: #d9eaff;
            background-image: linear-gradient(90deg, rgba(23,105,224,.18) 1px, transparent 1px), linear-gradient(rgba(23,105,224,.16) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .case-main .visual-cover { height: 235px; }
        .visual-cover::after {
            content: "▶";
            position: absolute;
            left: 50%;
            top: 50%;
            width: 52px;
            height: 52px;
            display: grid;
            place-items: center;
            transform: translate(-50%,-50%);
            border-radius: 50%;
            color: #fff;
            background: var(--blue);
            box-shadow: 0 8px 18px rgba(23,105,224,.25);
            font-size: 17px;
        }
        .case-small .visual-cover { min-height: 100%; }
        .case-small .visual-cover::after { width: 36px; height: 36px; font-size: 12px; }
        .case-content { padding: 22px 24px; }
        .case-small .case-content { padding: 16px 18px; }
        .tag {
            display: inline-block;
            padding: 3px 9px;
            border-radius: 4px;
            color: #147a7b;
            background: #e5f6f5;
            font-size: 12px;
            font-weight: 800;
        }
        .case-content h3 { margin: 9px 0 5px; color: var(--navy); font-size: 21px; line-height: 1.4; }
        .case-small h3 { font-size: 16px; }
        .case-content p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
        .case-meta { margin-top: 12px; color: #8a98a8; font-size: 12px; }

        .path-section { background: #edf5fd; }
        .path-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; position: relative; }
        .path-grid::before {
            content: "";
            position: absolute;
            left: 10%;
            right: 10%;
            top: 25px;
            border-top: 1px dashed #a7c4e3;
        }
        .path-step { position: relative; padding: 0 30px 10px 0; }
        .path-step:not(:first-child) { padding-left: 30px; }
        .step-no {
            position: relative;
            z-index: 2;
            width: 51px;
            height: 51px;
            display: grid;
            place-items: center;
            border: 5px solid #edf5fd;
            border-radius: 50%;
            color: #fff;
            background: var(--blue);
            font-weight: 800;
        }
        .path-step h3 { margin: 20px 0 6px; color: var(--navy); font-size: 19px; }
        .path-step p { margin: 0; color: var(--muted); font-size: 14px; }

        .faq-wrap { max-width: 850px; }
        .faq-item { border-top: 1px solid var(--line); }
        .faq-item:last-child { border-bottom: 1px solid var(--line); }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding: 21px 4px;
            border: 0;
            color: var(--navy);
            background: transparent;
            text-align: left;
            font-weight: 750;
        }
        .faq-question:hover { color: var(--blue); }
        .faq-question:focus { outline: 3px solid rgba(23,105,224,.15); outline-offset: 2px; }
        .faq-arrow { color: var(--blue); transition: transform .2s ease; }
        .faq-item.open .faq-arrow { transform: rotate(45deg); }
        .faq-answer { display: none; padding: 0 42px 21px 4px; color: var(--muted); font-size: 14px; }
        .faq-item.open .faq-answer { display: block; }

        .contact-grid { align-items: start; }
        .contact-note {
            padding: 27px;
            border-left: 3px solid var(--cyan);
            background: var(--blue-soft);
        }
        .contact-note h3 { margin: 0 0 8px; color: var(--navy); font-size: 22px; }
        .contact-note p { margin: 0 0 20px; color: var(--muted); font-size: 14px; }
        .contact-brand { color: var(--blue); font-weight: 800; }
        label { margin-bottom: 7px; color: var(--navy); font-size: 14px; font-weight: 700; }
        input, select, textarea {
            border: 1px solid var(--line);
            border-radius: 6px;
            box-shadow: none;
            color: var(--ink);
            background: #fff;
        }
        input:focus, select:focus, textarea:focus {
            border-color: var(--blue);
            box-shadow: 0 0 0 3px rgba(23,105,224,.12);
        }
        textarea { min-height: 122px; resize: vertical; }
        .form-help { color: var(--muted); font-size: 12px; }
        .form-status { display: none; margin-top: 12px; padding: 10px 13px; color: #20705e; background: #e8f7f1; border-radius: 5px; font-size: 13px; }
        .form-status.show { display: block; }

        .cta {
            padding: 62px 0;
            color: #fff;
            background: var(--blue);
        }
        .cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
        .cta h2 { margin: 0 0 7px; color: #fff; font-size: 30px; }
        .cta p { margin: 0; color: #dbeaff; }
        .cta .button.hollow { border-color: #b9d5fb; color: #fff; background: transparent; }
        .cta .button.hollow:hover { background: #fff; color: var(--blue); }

        .site-footer { padding: 44px 0 24px; color: #9db0c5; background: var(--navy); }
        .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; padding-bottom: 34px; }
        .footer-brand { color: #fff; }
        .footer-brand p { max-width: 350px; margin: 15px 0 0; color: #a9bdd3; font-size: 13px; }
        .footer-title { margin: 0 0 12px; color: #fff; font-size: 14px; }
        .footer-links { display: grid; gap: 7px; font-size: 13px; }
        .footer-links a:hover { color: #fff; }
        .footer-bottom { display: flex; justify-content: space-between; gap: 15px; padding-top: 20px; border-top: 1px solid rgba(219,234,255,.14); font-size: 12px; }
        .age-note { color: #e3b06b; }

        @media (max-width: 1024px) {
            .brand { min-width: 210px; }
            .nav-wrap { gap: 15px; }
            .nav-search { width: 130px; }
            .hero h1 { font-size: 42px; }
        }
        @media (max-width: 768px) {
            .grid-container { padding-left: 18px; padding-right: 18px; }
            .nav-wrap { min-height: 66px; flex-wrap: wrap; }
            .brand { min-width: 0; flex: 1; }
            .mobile-toggle {
                display: inline-flex;
                width: 38px;
                height: 38px;
                align-items: center;
                justify-content: center;
                border: 1px solid var(--line);
                border-radius: 6px;
                color: var(--blue);
                background: #fff;
            }
            .main-nav {
                display: none;
                flex-basis: 100%;
                order: 4;
                padding: 6px 0 14px;
                align-items: stretch;
                flex-direction: column;
            }
            .main-nav.open { display: flex; }
            .main-nav a { padding: 10px 12px; }
            .nav-actions { margin-left: auto; }
            .nav-search { width: 38px; padding-left: 36px; color: transparent; }
            .nav-actions .entry-btn { display: none; }
            .hero { padding: 56px 0 62px; }
            .hero::after { width: 72%; opacity: .45; }
            .hero h1 { font-size: 36px; }
            .hero-copy { font-size: 16px; }
            .hero-side { margin-top: 38px; padding-left: 8px; }
            .route-panel { padding-left: 28px; }
            .section { padding: 68px 0; }
            .section-title { font-size: 29px; }
            .service-aside { position: static; padding: 0; margin-bottom: 25px; }
            .metrics-band { display: grid; grid-template-columns: 1fr 1fr; }
            .metric, .metric:not(:first-child) { padding: 17px 18px; border-right: 1px solid var(--line); }
            .metric:nth-child(2n) { border-right: 0; }
            .case-layout { grid-template-columns: 1fr; }
            .case-main { min-height: 0; }
            .path-grid { grid-template-columns: 1fr; gap: 28px; }
            .path-grid::before { left: 25px; right: auto; top: 25px; bottom: 25px; border-top: 0; border-left: 1px dashed #a7c4e3; }
            .path-step, .path-step:not(:first-child) { padding: 0 0 0 78px; }
            .step-no { position: absolute; left: 0; top: 0; }
            .cta-inner { align-items: flex-start; flex-direction: column; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .nav-actions { gap: 6px; }
            .nav-actions .button { padding-left: 10px; padding-right: 10px; font-size: 13px; }
            .hero h1 { font-size: 31px; }
            .hero-buttons { display: grid; grid-template-columns: 1fr; }
            .hero-buttons .button { width: 100%; }
            .service-list { grid-template-columns: 1fr; }
            .case-small { grid-template-columns: 100px 1fr; }
            .case-main .visual-cover { height: 190px; }
            .footer-grid { grid-template-columns: 1fr; gap: 26px; }
            .footer-bottom { flex-direction: column; }
            .cta h2 { font-size: 26px; }
        }

/* roulang page: category2 */
:root{
 --blue:#1769e0;--blue-dark:#0e4eaf;--blue-soft:#eaf3ff;--cyan:#18a6a8;
 --ink:#1f2d3d;--muted:#69798c;--line:#dce6f0;--paper:#fff;--wash:#f5f8fc;
 --navy:#142b4a;--orange:#e28a35;--danger:#bd4d4d;--radius:8px;
 --shadow:0 14px 34px rgba(38,75,117,.10);--shadow-hover:0 18px 38px rgba(38,75,117,.17);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.grid-container{max-width:1180px;padding-left:24px;padding-right:24px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 18px rgba(27,59,94,.05)}
.nav-wrap{min-height:76px;display:flex;align-items:center;gap:28px}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:245px;font-weight:800;color:var(--navy);line-height:1.25}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:7px;color:#fff;background:var(--blue);font-size:17px;box-shadow:0 7px 14px rgba(23,105,224,.22)}
.brand-name{font-size:16px}
.main-nav{display:flex;align-items:center;gap:5px;flex:1}
.main-nav a{position:relative;padding:9px 13px;color:var(--muted);font-size:14px;font-weight:600}
.main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--blue);background:var(--blue-soft)}
.main-nav a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--blue)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-search{width:158px;height:38px;margin:0;padding:0 13px 0 36px;border:1px solid var(--line);border-radius:6px;color:var(--ink);background:var(--wash) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='17' height='17' viewBox='0 0 24 24' fill='none' stroke='%2369798c' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-4-4'/%3E%3C/svg%3E") 11px center no-repeat;outline:none}
.nav-search:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(23,105,224,.12)}
.button{margin:0;border-radius:6px;font-weight:700;transition:transform .2s ease,background .2s ease,box-shadow .2s ease}
.button.primary{background:var(--blue);color:#fff}
.button.primary:hover,.button.primary:focus{background:var(--blue-dark);color:#fff;box-shadow:0 8px 17px rgba(23,105,224,.22);transform:translateY(-1px)}
.button.hollow{color:var(--blue);border-color:#9dbde9;background:#fff}
.button.hollow:hover,.button.hollow:focus{color:var(--blue-dark);border-color:var(--blue);background:var(--blue-soft)}
.button:active{transform:translateY(0)}
.button:disabled{opacity:.5;cursor:not-allowed;transform:none}
.mobile-toggle{display:none;background:none;border:0;color:var(--navy);font-size:25px}
.page-hero{padding:68px 0 70px;background:var(--navy);color:#fff;position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;right:-3%;top:0;width:45%;height:100%;background:#193c68;clip-path:polygon(28% 0,100% 0,100% 100%,0 100%);opacity:.75}
.page-hero .grid-x{position:relative;z-index:1}
.crumbs{margin-bottom:20px;color:#a9c3df;font-size:13px}
.crumbs a:hover{color:#fff}
.page-hero h1{max-width:720px;margin:0 0 16px;color:#fff;font-size:46px;line-height:1.25;font-weight:850}
.page-hero p{max-width:700px;margin:0;color:#d3e1f2;font-size:17px}
.hero-note{margin-top:28px;display:flex;gap:10px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;padding:5px 11px;border:1px solid #5179a5;border-radius:30px;color:#dceaff;font-size:13px}
.section{padding:82px 0}
.section.alt{background:var(--wash)}
.section-head{max-width:700px;margin-bottom:34px}
.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800}
.section-kicker:before{content:"";width:24px;height:2px;background:var(--cyan)}
.section-head h2{margin:12px 0 10px;color:var(--navy);font-size:34px;line-height:1.3}
.section-head p{margin:0;color:var(--muted)}
.index-layout{display:grid;grid-template-columns:245px 1fr;gap:45px}
.side-index{border-right:1px solid var(--line);padding-right:25px}
.side-index h3{margin:0 0 16px;color:var(--navy);font-size:18px}
.index-link{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:14px}
.index-link span{color:var(--blue);font-weight:800}
.index-link:hover,.index-link.current{color:var(--blue)}
.feature-banner{display:grid;grid-template-columns:1.15fr .85fr;min-height:260px;overflow:hidden;border-radius:var(--radius);background:#eaf3ff;box-shadow:var(--shadow)}
.feature-copy{padding:34px 38px}
.badge{display:inline-block;padding:4px 9px;border-radius:4px;background:#d8f3f1;color:#087d7e;font-size:12px;font-weight:800}
.feature-copy h3{margin:16px 0 8px;color:var(--navy);font-size:26px;line-height:1.35}
.feature-copy p{margin:0 0 20px;color:var(--muted);font-size:14px}
.feature-art{min-height:260px;background:#d5e7fb url("https://travel62.com/assets/images/update-browser-cover.jpg") center/cover no-repeat;position:relative}
.feature-art:after{content:"▶";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:52px;height:52px;display:grid;place-items:center;border-radius:50%;background:rgba(23,105,224,.92);color:#fff;font-size:18px;padding-left:3px}
.timeline{position:relative;margin:34px 0 0;padding-left:28px}
.timeline:before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:1px;background:#b8d1ed}
.timeline-item{position:relative;padding:0 0 28px 28px}
.timeline-item:before{content:"";position:absolute;left:-28px;top:8px;width:13px;height:13px;border:3px solid var(--blue);border-radius:50%;background:#fff}
.timeline-meta{display:flex;gap:12px;align-items:center;color:var(--muted);font-size:13px}
.timeline-item h3{margin:6px 0 5px;color:var(--navy);font-size:20px}
.timeline-item p{margin:0;color:var(--muted);font-size:14px}
.text-link{color:var(--blue);font-size:14px;font-weight:800}
.text-link:hover{color:var(--blue-dark)}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.related-card{padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.related-card h3{margin:10px 0 6px;color:var(--navy);font-size:19px}
.related-card p{margin:0 0 14px;color:var(--muted);font-size:14px}
.notice{display:flex;gap:16px;align-items:flex-start;padding:22px 25px;border-left:4px solid var(--orange);background:#fff8ef;color:#6f573c}
.notice strong{display:block;color:#594329;margin-bottom:3px}
.cta{padding:60px 0;background:var(--blue-soft);border-top:1px solid #d8e8fa;border-bottom:1px solid #d8e8fa}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
.cta h2{margin:0 0 7px;color:var(--navy);font-size:29px}
.cta p{margin:0;color:var(--muted)}
.cta-actions{display:flex;gap:10px;flex-wrap:wrap}
.site-footer{padding:56px 0 24px;background:var(--navy);color:#c1d1e3}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr;gap:50px}
.footer-brand{color:#fff}
.footer-brand .brand-name{color:#fff}
.footer-brand p{max-width:350px;margin:18px 0 0;color:#a9bdd4;font-size:14px}
.footer-title{margin:4px 0 15px;color:#fff;font-size:15px}
.footer-links{display:grid;gap:8px;font-size:14px}
.footer-links a:hover{color:#fff}
.age-note{color:#e8bd85;font-size:13px}
.footer-bottom{display:flex;justify-content:space-between;gap:15px;margin-top:42px;padding-top:18px;border-top:1px solid #355270;color:#91a9c2;font-size:12px}
@media(max-width:1024px){
 .nav-wrap{gap:15px}.brand{min-width:220px}.nav-search{width:135px}
 .index-layout{grid-template-columns:205px 1fr;gap:28px}
}
@media(max-width:768px){
 .nav-wrap{min-height:68px;flex-wrap:wrap}.brand{min-width:0;flex:1}.mobile-toggle{display:block}
 .main-nav{display:none;order:4;flex-basis:100%;padding:8px 0 14px;border-top:1px solid var(--line)}
 .main-nav.open{display:flex;flex-direction:column;align-items:stretch}
 .main-nav a{padding:10px 12px}.main-nav a.active::after{display:none}
 .nav-actions{gap:6px}.nav-search{width:120px}.nav-actions .button{padding:.72em .8em;font-size:13px}
 .page-hero{padding:48px 0 54px}.page-hero h1{font-size:36px}.page-hero:after{width:32%}
 .section{padding:60px 0}.section-head h2{font-size:29px}
 .index-layout{display:block}.side-index{border-right:0;border-bottom:1px solid var(--line);padding:0 0 20px;margin-bottom:28px}
 .side-index nav{display:flex;gap:10px;overflow:auto}.index-link{min-width:145px;padding:10px;border:1px solid var(--line);border-radius:6px;display:block}
 .index-link span{float:right}.feature-banner{grid-template-columns:1fr}.feature-art{min-height:190px;order:-1}
 .cta-inner{display:block}.cta-actions{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}
}
@media(max-width:520px){
 .grid-container{padding-left:18px;padding-right:18px}.nav-actions .button.hollow{display:none}.nav-search{width:112px}
 .page-hero h1{font-size:30px}.page-hero p{font-size:15px}.hero-note{margin-top:20px}
 .feature-copy{padding:26px 23px}.feature-copy h3{font-size:22px}
 .related-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:6px}
}

/* roulang page: category1 */
:root {
      --blue:#1769e0;
      --blue-dark:#0e4eaf;
      --blue-soft:#eaf3ff;
      --cyan:#18a6a8;
      --ink:#1f2d3d;
      --muted:#69798c;
      --line:#dce6f0;
      --paper:#fff;
      --wash:#f5f8fc;
      --navy:#142b4a;
      --orange:#e28a35;
      --danger:#bd4d4d;
      --radius:8px;
      --shadow:0 14px 34px rgba(38,75,117,.10);
      --shadow-hover:0 18px 38px rgba(38,75,117,.17);
    }
    html { scroll-behavior:smooth; }
    *,*::before,*::after { box-sizing:border-box; }
    body {
      margin:0;
      color:var(--ink);
      background:var(--paper);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;
      font-size:16px;
      line-height:1.75;
    }
    a { color:inherit; text-decoration:none; }
    img { display:block; max-width:100%; }
    button,input,select,textarea { font:inherit; }
    button { cursor:pointer; }
    .grid-container { max-width:1180px; padding-left:24px; padding-right:24px; }
    .site-header {
      position:sticky; top:0; z-index:20;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 5px 18px rgba(27,59,94,.05);
    }
    .nav-wrap {
      min-height:76px; display:flex; align-items:center; gap:28px;
    }
    .brand {
      display:inline-flex; align-items:center; gap:10px; min-width:245px;
      color:var(--navy); font-weight:800; line-height:1.25;
    }
    .brand-mark {
      width:34px; height:34px; display:grid; place-items:center;
      border-radius:7px; color:#fff; background:var(--blue);
      font-size:17px; box-shadow:0 7px 14px rgba(23,105,224,.22);
    }
    .brand-name { font-size:16px; }
    .main-nav { display:flex; align-items:center; gap:5px; flex:1; }
    .main-nav a {
      position:relative; padding:9px 13px; color:var(--muted);
      font-size:14px; font-weight:600; transition:.2s ease;
    }
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active {
      color:var(--blue); background:var(--blue-soft);
    }
    .main-nav a.active::after {
      content:""; position:absolute; left:13px; right:13px; bottom:3px;
      height:2px; background:var(--blue);
    }
    .nav-actions { display:flex; align-items:center; gap:10px; }
    .nav-search {
      width:158px; height:38px; margin:0; padding:0 13px 0 36px;
      border:1px solid var(--line); border-radius:6px; color:var(--ink);
      background:var(--wash) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='17' height='17' viewBox='0 0 24 24' fill='none' stroke='%2369798c' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-4-4'/%3E%3C/svg%3E") 11px center no-repeat;
      outline:none;
    }
    .nav-search:focus { border-color:var(--blue); box-shadow:0 0 0 3px rgba(23,105,224,.12); }
    .button {
      margin:0; border-radius:6px; font-weight:700;
      transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
    }
    .button.primary { color:#fff; background:var(--blue); }
    .button.primary:hover,.button.primary:focus {
      color:#fff; background:var(--blue-dark); box-shadow:0 8px 17px rgba(23,105,224,.22);
      transform:translateY(-1px);
    }
    .button.hollow { color:var(--blue); border-color:#9dbde9; background:#fff; }
    .button.hollow:hover,.button.hollow:focus { color:var(--blue-dark); background:var(--blue-soft); border-color:var(--blue); }
    .button:active { transform:translateY(0); }
    .button:disabled { opacity:.5; cursor:not-allowed; }
    .mobile-toggle { display:none; }
    .page-hero {
      padding:54px 0 48px; background:var(--blue-soft);
      border-bottom:1px solid #d5e5f7;
    }
    .breadcrumb {
      display:flex; gap:9px; align-items:center; margin:0 0 24px;
      color:var(--muted); font-size:13px;
    }
    .breadcrumb a { color:var(--blue); }
    .eyebrow,.section-kicker {
      display:inline-flex; align-items:center; gap:8px;
      color:var(--blue); font-size:13px; font-weight:800;
    }
    .eyebrow::before,.section-kicker::before {
      content:""; width:24px; height:2px; background:var(--cyan);
    }
    .page-hero h1 {
      max-width:760px; margin:13px 0 13px; color:var(--navy);
      font-size:42px; line-height:1.25; font-weight:850;
    }
    .lead { max-width:710px; margin:0; color:var(--muted); font-size:17px; }
    .hero-meta {
      display:flex; flex-wrap:wrap; gap:9px; margin-top:24px;
    }
    .tag {
      display:inline-flex; align-items:center; min-height:29px; padding:3px 10px;
      border:1px solid #b8d1ed; border-radius:20px; color:var(--blue-dark);
      background:#fff; font-size:12px; font-weight:700;
    }
    .section { padding:76px 0; }
    .section.alt { background:var(--wash); }
    .section-head { margin-bottom:30px; }
    .section-head h2 { margin:8px 0 8px; color:var(--navy); font-size:30px; line-height:1.3; }
    .section-head p { max-width:650px; margin:0; color:var(--muted); }
    .filter-bar {
      display:flex; align-items:flex-end; gap:14px; padding:18px;
      margin-bottom:30px; border:1px solid var(--line); border-radius:var(--radius);
      background:#fff; box-shadow:var(--shadow);
    }
    .filter-field { flex:1; margin:0; }
    .filter-field label,.form-label {
      display:block; margin-bottom:6px; color:var(--ink); font-size:13px; font-weight:700;
    }
    .filter-field input,.filter-field select,.contact-form input,.contact-form select,.contact-form textarea {
      height:43px; margin:0; border:1px solid var(--line); border-radius:6px;
      color:var(--ink); background:#fff; box-shadow:none;
    }
    .filter-field input:focus,.filter-field select:focus,.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus {
      border-color:var(--blue); box-shadow:0 0 0 3px rgba(23,105,224,.12);
    }
    .filter-actions { display:flex; gap:8px; }
    .content-layout { display:grid; grid-template-columns:1.28fr .92fr; gap:22px; }
    .feature-entry,.video-entry {
      border:1px solid var(--line); border-radius:var(--radius); background:#fff;
      box-shadow:var(--shadow); overflow:hidden; transition:.2s ease;
    }
    .feature-entry:hover,.video-entry:hover { transform:translateY(-3px); box-shadow:var(--shadow-hover); }
    .media-stage {
      position:relative; min-height:260px; padding:25px; color:#fff;
      background:#173c67; overflow:hidden;
    }
    .media-stage::before {
      content:""; position:absolute; inset:20px 25px auto auto; width:190px; height:190px;
      border:1px solid rgba(255,255,255,.22); border-radius:50%;
    }
    .media-stage::after {
      content:""; position:absolute; right:62px; bottom:-34px; width:245px; height:120px;
      border:1px solid rgba(24,166,168,.55); transform:rotate(-12deg);
    }
    .media-label { position:relative; z-index:1; color:#9bd4db; font-size:12px; font-weight:800; }
    .media-stage h3 { position:relative; z-index:1; max-width:400px; margin:45px 0 10px; color:#fff; font-size:27px; line-height:1.35; }
    .media-stage p { position:relative; z-index:1; max-width:410px; margin:0; color:#c6d9ec; font-size:14px; }
    .play-mark {
      position:absolute; right:27px; bottom:24px; z-index:1; width:48px; height:48px;
      display:grid; place-items:center; border:1px solid rgba(255,255,255,.5);
      border-radius:50%; color:#fff; font-size:18px;
    }
    .entry-body { padding:22px 24px 25px; }
    .entry-body h3 { margin:10px 0 7px; color:var(--navy); font-size:21px; }
    .entry-body p { margin:0 0 18px; color:var(--muted); font-size:14px; }
    .entry-meta { display:flex; justify-content:space-between; align-items:center; color:var(--muted); font-size:12px; }
    .compact-list { display:grid; gap:14px; }
    .video-entry { display:grid; grid-template-columns:145px 1fr; min-height:142px; }
    .thumb {
      min-height:142px; display:flex; align-items:flex-end; padding:12px;
      color:#d9edff; background:#28547d; font-size:12px; font-weight:700;
    }
    .thumb.cyan { background:#176d78; }
    .thumb.light { color:var(--navy); background:#cfe4f6; }
    .video-entry .entry-body { padding:16px 18px; }
    .video-entry h3 { margin:7px 0 4px; font-size:16px; }
    .video-entry p { display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; margin-bottom:8px; font-size:13px; }
    .empty-note {
      padding:16px 18px; border-left:3px solid var(--orange); color:var(--muted);
      background:#fffaf4; font-size:13px;
    }
    .related-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
    .related-link {
      display:flex; justify-content:space-between; align-items:center; gap:20px;
      padding:20px; border:1px solid var(--line); border-radius:var(--radius);
      background:#fff; transition:.2s ease;
    }
    .related-link:hover { border-color:#9dbde9; box-shadow:var(--shadow); color:var(--blue); }
    .related-link strong { display:block; color:var(--navy); font-size:17px; }
    .related-link span { color:var(--muted); font-size:13px; }
    .faq-wrap { max-width:820px; 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;
      border:0; color:var(--navy); background:transparent; text-align:left; font-weight:750;
    }
    .faq-question:hover,.faq-question:focus { color:var(--blue); }
    .faq-icon { color:var(--blue); font-size:22px; line-height:1; transition:transform .2s ease; }
    .faq-answer { display:none; padding:0 42px 20px 0; color:var(--muted); font-size:14px; }
    .faq-item.open .faq-answer { display:block; }
    .faq-item.open .faq-icon { transform:rotate(45deg); }
    .cta-band { padding:58px 0; color:#fff; background:var(--navy); }
    .cta-band h2 { margin:0 0 10px; color:#fff; font-size:30px; }
    .cta-band p { margin:0; color:#c9d8e9; }
    .cta-actions { display:flex; justify-content:flex-end; align-items:center; gap:12px; }
    .cta-band .button.hollow { color:#fff; border-color:#7092b8; background:transparent; }
    .cta-band .button.hollow:hover { background:#244a78; }
    .site-footer { padding:58px 0 22px; color:#c2d0df; background:#102641; }
    .footer-grid { display:grid; grid-template-columns:1.5fr 1fr 1fr; gap:50px; }
    .footer-brand { color:#fff; }
    .footer-brand p { max-width:360px; margin:17px 0 0; color:#aebed0; font-size:13px; }
    .footer-title { margin:0 0 14px; color:#fff; font-size:14px; }
    .footer-links { display:grid; gap:8px; color:#aebed0; font-size:13px; }
    .footer-links a:hover { color:#fff; }
    .age-note { color:#e6b071; }
    .footer-bottom {
      display:flex; justify-content:space-between; gap:20px; margin-top:42px; padding-top:18px;
      border-top:1px solid rgba(255,255,255,.14); color:#91a6bc; font-size:12px;
    }
    .status-message { display:none; margin:12px 0 0; color:var(--cyan); font-size:13px; }
    @media (max-width:1024px) {
      .nav-wrap { gap:16px; }
      .brand { min-width:220px; }
      .nav-search { width:135px; }
      .content-layout { grid-template-columns:1fr; }
    }
    @media (max-width:768px) {
      .grid-container { padding-left:18px; padding-right:18px; }
      .nav-wrap { min-height:68px; flex-wrap:wrap; gap:10px; padding-top:10px; padding-bottom:10px; }
      .brand { min-width:0; flex:1; }
      .brand-name { font-size:14px; }
      .mobile-toggle {
        display:block; width:38px; height:36px; padding:0; border:1px solid var(--line);
        border-radius:6px; color:var(--blue); background:#fff; font-size:20px;
      }
      .main-nav { display:none; order:3; flex-basis:100%; padding:8px 0; border-top:1px solid var(--line); }
      .main-nav.is-open { display:flex; }
      .main-nav a { flex:1; text-align:center; }
      .nav-actions { gap:6px; }
      .nav-actions .nav-search { width:130px; }
      .nav-actions .button.hollow { display:none; }
      .page-hero { padding:38px 0 34px; }
      .page-hero h1 { font-size:34px; }
      .section { padding:58px 0; }
      .filter-bar { align-items:stretch; flex-direction:column; }
      .filter-actions { display:grid; grid-template-columns:1fr 1fr; }
      .related-grid { grid-template-columns:1fr; }
      .cta-actions { justify-content:flex-start; margin-top:24px; }
      .footer-grid { grid-template-columns:1fr 1fr; gap:28px; }
      .footer-brand { grid-column:1/-1; }
      .footer-bottom { flex-direction:column; gap:5px; }
    }
    @media (max-width:520px) {
      .nav-actions .nav-search { width:102px; padding-left:31px; }
      .nav-actions .button.primary { padding-left:10px; padding-right:10px; font-size:13px; }
      .page-hero h1 { font-size:29px; }
      .lead { font-size:15px; }
      .video-entry { grid-template-columns:104px 1fr; }
      .thumb { min-height:145px; padding:9px; }
      .video-entry .entry-body { padding:13px; }
      .video-entry h3 { font-size:15px; }
      .entry-meta { display:block; }
      .entry-meta .button { margin-top:7px; }
      .footer-grid { grid-template-columns:1fr; }
    }