/* roulang page: index */
:root{
    --primary:#4A7FB5;
    --primary-deep:#2C5F8A;
    --primary-soft:#EAF0F5;
    --accent:#C9781A;
    --accent-light:#F5E6D4;
    --bg:#F5F8FB;
    --card-bg:#FFFFFF;
    --text:#27323E;
    --text-secondary:#52616B;
    --border:#DCE4EC;
    --radius:16px;
    --radius-sm:10px;
    --shadow:0 8px 24px rgba(25,45,70,0.06);
    --shadow-hover:0 14px 32px rgba(25,45,70,0.10);
    --space-section:clamp(4rem,10vh,7rem);
    --space-content:clamp(2.5rem,5vh,3.5rem);
    --font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:var(--font-family);background:var(--bg);color:var(--text);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
  a{color:var(--primary-deep);text-decoration:none;transition:color .2s}
  a:hover{color:#1E4870}
  img{max-width:100%;display:block}
  .container{max-width:1200px;margin:0 auto;padding:0 20px}
  .text-muted{color:var(--text-secondary)!important}
  section{position:relative}
  .section-pad{padding:var(--space-section) 0}
  .section-head{margin-bottom:clamp(2rem,4vh,3.2rem)}
  .section-head .eyebrow{display:inline-block;background:var(--primary-soft);color:var(--primary-deep);font-size:14px;font-weight:700;padding:5px 16px;border-radius:50px;letter-spacing:.5px;margin-bottom:10px}
  .section-head h2{font-size:clamp(1.8rem,3vw,2.4rem);font-weight:700;letter-spacing:.3px;line-height:1.35;margin-bottom:8px}
  .section-head p{font-size:17px;color:var(--text-secondary);max-width:560px;line-height:1.7}
  .btn-search,.btn-outline-main,.btn-solid-main{border-radius:var(--radius-sm);display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:all .2s ease}
  .btn-solid-main{background:var(--accent);border:1px solid var(--accent);color:#fff;font-weight:600;padding:12px 32px;font-size:15px}
  .btn-solid-main:hover{background:#B56815;border-color:#B56815;color:#fff;box-shadow:0 8px 20px rgba(201,120,26,.25);transform:translateY(-1px)}
  .btn-solid-main:active{transform:scale(.98)}
  .btn-outline-main{background:transparent;border:1px solid var(--primary-deep);color:var(--primary-deep);font-weight:600;padding:12px 28px;font-size:15px}
  .btn-outline-main:hover{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-deep)}
  .btn-outline-main:active{transform:scale(.98)}
  .card-elem{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);transition:all .25s ease}
  a{transition:color .15s ease}
  a:focus-visible,button:focus-visible,input:focus-visible,.form-control:focus,.btn:focus{outline:2px solid rgba(42,95,138,.4);box-shadow:0 0 0 4px rgba(42,95,138,.15);border-color:var(--primary)}
  .input-group:focus-within{box-shadow:0 0 0 4px rgba(42,95,138,.12);border-radius:20px}
  @media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:0.01ms!important;transition-duration:0.01ms!important}}

  /* header / nav */
  .site-header{position:relative;background:#fff;border-bottom:1px solid var(--border)}
  .topbar{display:flex;align-items:center;justify-content:space-between;height:auto;padding:10px 0;gap:20px;flex-wrap:wrap}
  .navbar-mega{background:#fff;position:sticky;top:0;z-index:1080;transition:box-shadow .3s,border-color .3s;border-bottom:1px solid transparent}
  .navbar-mega.scrolled{box-shadow:0 4px 18px rgba(25,45,70,.05);border-bottom-color:var(--border)}
  .navbar-mega .navbar-brand{font-size:1.7rem;font-weight:800;color:var(--text);letter-spacing:.3px}
  .navbar-mega .navbar-brand .domain{color:var(--text-secondary);font-size:15px;font-weight:500;margin-left:8px}
  .navbar-mega .navbar-brand .brand-dot{color:var(--accent)}
  .navbar-mega .nav-link{padding:12px 16px;color:var(--text);font-weight:600;font-size:15px;font-family:var(--font-family)}
  .navbar-mega .nav-link:hover{color:var(--primary-deep)}
  .navbar-mega .nav-link.active{color:var(--primary-deep);box-shadow:inset 0 -3px 0 var(--primary)}
  .header-bottom{background:#fff;border-top:1px solid var(--border)}
  .category-nav{display:flex;align-items:stretch;min-height:54px;width:100%}
  .category-nav .nav-item-cat{display:inline-flex;align-items:center}
  .category-nav .nav-link{padding:14px 16px;font-size:14px}
  .search-form{max-width:260px;width:100%}
  .search-form .form-control{border-radius:20px 0 0 20px;font-size:14px;background:var(--bg);border:1px solid var(--border)}
  .search-form .btn{border-radius:0 20px 20px 0;background:var(--primary-deep);border-color:var(--primary-deep);color:#fff;padding:8px 16px;font-size:14px}
  .search-form .btn:hover{background:var(--primary)}
  .trend-words{display:inline-flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:13px;margin-left:16px;white-space:nowrap}
  .trend-words a{color:var(--text-secondary);font-weight:400;border-bottom:1px dashed var(--border)}
  .trend-words a:hover{color:var(--accent)}
  .site-title{font-weight:700}
  .site-title .logo-cn{font-size:1.6rem;line-height:1.4;font-weight:800}
  @media (max-width: 992px){
    .site-title .logo-cn{font-size:1.4rem}
    .search-form{max-width:220px}
    .category-nav{overflow-x:auto;scrollbar-width:thin;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}
    .category-nav::-webkit-scrollbar{height:2px;background:var(--border)}
    .category-nav::-webkit-scrollbar-thumb{background:var(--primary)}
  }
  @media (max-width: 768px){
    .topbar{padding:8px 0}
    .navbar-mega .search-form{display:none}
    .category-nav .nav-link{padding:11px 12px;font-size:13px}
    .pattern-nav-search{margin-left:auto}
  }

  /* hero */
  .hero{background:linear-gradient(180deg,var(--bg) 0%,#FFFFFF 90%);min-height:84vh;display:flex;align-items:center;padding:clamp(3.5rem,7vh,6rem) 0 0}
  .hero .hero-copy h1{font-size:clamp(2.5rem,5vw,3.4rem);font-weight:800;line-height:1.25;letter-spacing:.6px;margin-bottom:24px}
  .hero .hero-copy h1 .text-primary{color:var(--primary-deep)}
  .hero .hero-copy h1 .accent-text{color:var(--accent);font-weight:800}
  .hero .hero-copy p{font-size:clamp(17px,1.8vw,20px);color:var(--text-secondary);line-height:1.8;max-width:600px;margin-bottom:36px}
  .hero .hero-btn-row{display:flex;flex-wrap:wrap;gap:16px}
  .hero-visual{position:relative;border-radius:var(--radius);overflow:hidden;transform:rotate(.3deg)}
  .hero-visual img{max-height:480px;object-fit:cover;width:100%}
  .hero-visual:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.2),transparent 28%,transparent 82%,rgba(255,255,255,.1))}
  .scroll-marker{position:absolute;bottom:-48px;left:50%;transform:translateX(-50%) rotate(90deg);font-size:36px;color:var(--border);line-height:40px}

  /* trust bar */
  .trust-strip{border-top:1px solid var(--border);margin-top:45px;background:#fff;padding:34px 0}
  .trust-strip .tk{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
  .trust-item{display:flex;align-items:center;gap:14px;padding:0 10px}
  .trust-icon{width:46px;height:46px;border-radius:12px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--primary);background:#fff}
  .trust-num{font-size:1.5rem;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.2}
  .trust-label{font-size:14px;color:var(--text-secondary)}

  /* feature layout non symmetric */
  .feature-main-card{padding:34px;display:flex;flex-direction:column;background:var(--card-bg)}
  .feature-main-card .topic-img{height:150px;border-radius:14px;background-image:url('/assets/images/coverpic/cover-1.webp');background-size:cover;background-position:center;margin-bottom:20px;position:relative}
  .feature-main-card h3{font-size:1.3rem;font-weight:700;margin-bottom:14px}
  .feature-main-card p{color:var(--text-secondary);font-size:15.5px}
  .feature-sub-card{padding:28px;background:var(--card-bg)}
  .feature-sub-card h4{font-weight:700;font-size:1.05rem;margin-bottom:10px}
  .feature-sub-card p{font-size:15px;color:var(--text-secondary)}
  .more-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-deep)}
  .more-link:hover{color:var(--accent);gap:9px}

  /* showcase */
  .showcase-block{background:#fff;border-top:1px solid transparent}
  .showcase-card{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff;transition:box-shadow .25s}
  .showcase-card .showcase-media{aspect-ratio:16/7;overflow:hidden;background:#EAF0F5;min-height:230px}
  .showcase-card img{width:100%;height:100%;object-fit:cover;transition:transform .8s ease}
  .showcase-card:hover img{transform:scale(1.025)}
  .media-alt{padding-top:10px;font-size:14px;color:var(--text-secondary)}

  /* news card */
  .news-list-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .25s ease;height:100%}
  .news-list-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
  .news-img{position:relative;background:#e6eef5;height:136px;overflow:hidden}
  .news-img img{width:100%;height:100%;object-fit:cover}
  .news-cat-pill{position:absolute;top:10px;left:10px;background:rgba(42,95,138,.82);color:#fff;font-size:12px;padding:3px 12px;border-radius:20px}
  .news-nav{padding:18px 18px 10px;display:flex;justify-content:space-between;font-size:13px}
  .news-title{padding:0 18px;font-size:18px;font-weight:700;line-height:1.5;margin-bottom:8px}
  .news-title:hover{color:var(--primary)}
  .news-desc{padding:0 18px;font-size:14px;color:var(--text-secondary);line-height:1.55;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}
  .news-meta{padding:14px 18px;margin-top:auto;font-size:13px;color:var(--text-secondary);display:flex;justify-content:space-between;align-items:center}
  .news-meta .badge{background:var(--primary-soft);color:var(--primary-deep);font-weight:600;font-size:12px}

  /* proof */
  .proof-stat{font-size:2.5rem;font-weight:800;line-height:1.2;color:var(--primary-deep);font-variant-numeric:tabular-nums}
  .proof-note{font-size:15px;color:var(--text-secondary)}

  /* pricing */
  .price-plan{border:1px solid var(--border);border-radius:20px;background:#fff;padding:28px;height:100%;position:relative;display:flex;flex-direction:column;box-shadow:var(--shadow)}
  .plan-recommend{border:1px solid var(--accent);box-shadow:0 12px 34px rgba(201,120,26,.10)}
  .plan-recommend::before{content:"推荐方案";position:absolute;top:-12px;right:24px;background:var(--accent);color:#fff;font-size:13px;font-weight:700;padding:4px 16px;border-radius:30px}
  .plan-name{font-weight:800;font-size:1.3rem}
  .plan-desc{color:var(--text-secondary);font-size:15px;min-height:48px}
  .plan-price{font-size:2rem;font-weight:800}
  .plan-feature{list-style:none;padding:0}
  .plan-feature li{display:flex;align-items:center;gap:10px;padding:6px 0;color:var(--text-secondary);font-size:15px}
  .plan-feature li i{color:#488457}

  /* FAQ */
  .faq-wrap .accordion-item{border:none;border-bottom:1px solid var(--border);background:transparent}
  .faq-wrap .accordion-header button{padding:24px 6px;font-size:16px;font-weight:700;background:transparent;color:var(--text);display:flex;justify-content:space-between;align-items:center;box-shadow:none}
  .faq-wrap .accordion-header button:after{background-image:none;content:"+";font-family:var(--font-family);font-size:28px;font-weight:300;color:var(--primary);line-height:1;transition:all .3s}
  .faq-wrap .accordion-button[aria-expanded="true"]{background:#F0F5F8}
  .faq-wrap .accordion-button[aria-expanded="true"]:after{content:"-";font-size:26px;transform:rotate(90deg)}
  .faq-wrap .accordion-body{background:#fff;padding:4px 10px 24px}

  /* CTA */
  .cta-panel{background:var(--primary-deep);border-radius:20px;padding:44px 48px;color:#fff;overflow:hidden;position:relative}
  .cta-panel h3{font-size:1.7rem;font-weight:800}
  .cta-panel p{opacity:.9;color:#fff}
  .cta-panel .btn{background:var(--accent);font-weight:700;font-size:15px}
  .cta-panel .btn:hover{background:#E0952A;color:#fff}
  .cta-panel a:not(.btn){color:#fff}
  .cta-panel .cta-img-feature{position:absolute;right:-38px;bottom:-20px;width:240px;opacity:.15;pointer-events:none}
  .footer{background:#29323B;color:#d5dfe8}
  .footer .link-list li a{color:#aeb7c0;font-size:14px}
  .footer .link-list li a:hover{color:#ffffff}
  .footer h6{font-weight:700;font-size:16px;margin-bottom:16px}
  .footer hr{background:#3d464d;opacity:.4}
  .float-cta{position:fixed;right:-70px;bottom:48px;background:var(--accent);width:66px;height:66px;border-radius:50%;box-shadow:0 10px 30px rgba(201,120,26,.3);z-index:1090;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;opacity:0;transition:all .25s ease}
  .float-cta{right:32px}
  .float-cta:hover{background:#C97819;color:#fff;transform:scale(1.04)}
  .float-cta.show{opacity:1}
  @media (max-width: 575px){
    .float-cta{width:48px;height:48px;right:18px;bottom:22px;font-size:16px}
  }
  @media (max-width: 768px){
    .hero{min-height:auto;padding-top:42px}
    .hero .hero-visual{margin-top:34px}
    .hero .hero-btn-row .btn{flex:1;min-width:0}
    .hero .hero-copy h1{font-size:2rem}
    .trend-words{display:none}
    .trust-strip{overflow-x:auto}
    .trust-strip .trust-item{flex:1 1 38%;min-width:150px}
  }
  @media (max-width: 576px){
    .section-paragraph{font-size:15.5px}
    .navbar-mega .navbar-brand .domain{display:none}
    .brand-footer{font-size:1.35rem}
  }
  @media (min-width: 992px){
    .navbar-mega .topbar{padding-top:16px;padding-bottom:16px}
    .hero .hero-copy h1{line-height:1.22}
    .showcase-media{min-height:300px}
  }
  .empty-list{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:5rem 20px;text-align:center;background:#fff;border:1px dashed var(--border);border-radius:var(--radius)}
  .empty-list i{color:var(--border);font-size:3rem;margin-bottom:16px}
  .empty-list p{color:var(--text-secondary);font-size:16px;margin-bottom:12px}
  .ic-feature{max-width:110px;border-radius:12px;padding:8px 0}

/* roulang page: category1 */
:root {
            --main: #4A7FB5;
            --main-dark: #2C5F8A;
            --main-light: #EAF0F5;
            --accent: #D9772B;
            --accent-dark: #B8611E;
            --bg: #F5F8FB;
            --card: #FFFFFF;
            --border: #DCE4EC;
            --text: #22313F;
            --muted: #5E707C;
            --light-muted: #8A98A5;
            --white-soft: #F8FAFC;
            --rounded-lg: 16px;
            --rounded-md: 10px;
            --shadow: 0 8px 24px rgba(25, 45, 70, .06);
            --shadow-hover: 0 14px 32px rgba(25, 45, 70, .10);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            background: var(--bg);
            color: var(--text);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--main-dark);
            text-decoration: none;
            transition: color .2s ease, border-color .2s ease, background-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        a:hover {
            color: #1d4367;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: 1200px;
        }

        section[id],
        footer[id] {
            scroll-margin-top: 120px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .97);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(25, 45, 70, .04);
            backdrop-filter: blur(8px);
        }

        .topbar {
            min-height: 58px;
            border-bottom: 1px solid rgba(220, 228, 236, .8);
        }

        .site-title {
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: .2px;
            color: var(--text);
            line-height: 1.4;
        }

        .site-title .logo-cn {
            color: var(--text);
        }

        .site-title .brand-dot {
            color: var(--accent);
            font-weight: 900;
            font-size: 1.1rem;
            margin: 0 1px;
        }

        .search-form {
            width: 270px;
        }

        .search-form .form-control {
            background: #F1F6FA;
            border: 1px solid var(--border);
            border-radius: 8px 0 0 8px;
            font-size: .88rem;
            padding: .42rem .8rem;
            color: var(--text);
        }

        .search-form .form-control:focus {
            background: #fff;
            border-color: var(--main);
            outline: none;
            box-shadow: 0 0 0 .2rem rgba(74, 127, 181, .16);
        }

        .search-form .btn {
            border: 1px solid var(--border);
            border-left: 0;
            background: #F1F6FA;
            color: var(--main-dark);
            border-radius: 0 8px 8px 0;
            padding: 0 12px;
        }

        .search-form .btn:hover {
            background: var(--main-dark);
            color: #fff;
        }

        .btn-outline-main {
            border: 1px solid var(--main-dark);
            color: var(--main-dark);
            background: transparent;
            font-weight: 600;
            border-radius: var(--rounded-md);
            padding: .45rem 1rem;
            transition: all .2s ease;
        }

        .btn-outline-main:hover,
        .btn-outline-main:focus {
            background: var(--main-dark);
            color: #fff;
            border-color: var(--main-dark);
            box-shadow: 0 0 0 .2rem rgba(44, 95, 138, .14);
        }

        .btn-outline-main:active {
            transform: scale(.98);
        }

        .navbar-mega {
            background: #fff;
        }

        .category-nav {
            display: flex;
            align-items: center;
            gap: .15rem;
            overflow-x: auto;
            scrollbar-width: none;
            min-height: 52px;
        }

        .category-nav::-webkit-scrollbar {
            display: none;
        }

        .category-nav .channel {
            color: var(--main);
            white-space: nowrap;
            font-weight: 600;
            font-size: .85rem;
            margin-right: .3rem;
        }

        .category-nav .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            font-size: .92rem;
            font-weight: 600;
            color: var(--text);
            padding: .62rem .65rem;
            white-space: nowrap;
            border-radius: 8px 8px 0 0;
            line-height: 1.2;
        }

        .category-nav .nav-link::after {
            content: "";
            position: absolute;
            left: .8rem;
            right: .8rem;
            bottom: 0;
            height: 3px;
            background: transparent;
            border-radius: 3px 3px 0 0;
        }

        .category-nav .nav-link.active {
            color: var(--main-dark);
        }

        .category-nav .nav-link.active::after {
            background: var(--main-dark);
        }

        .category-nav .nav-link:focus-visible,
        .site-header a:focus-visible {
            outline: 2px solid rgba(42, 95, 138, .4);
            outline-offset: 2px;
        }

        .mobile-icons a {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border);
            color: var(--main-dark);
            background: #fff;
        }

        .mobile-icons a:hover {
            background: var(--main-light);
            color: var(--main-dark);
        }

        .offcanvas.mobile-menu {
            background: #fff;
            border-left: 1px solid var(--border);
        }

        .mobile-menu .offcanvas-title {
            font-weight: 700;
            color: var(--text);
            font-size: 1.05rem;
        }

        .mobile-search .form-control {
            border: 1px solid var(--border);
            border-right: 0;
            border-radius: 8px 0 0 8px;
            font-size: .9rem;
        }

        .mobile-search .btn {
            background: var(--main-dark);
            color: #fff;
            border-radius: 0 8px 8px 0;
            border: 1px solid var(--main-dark);
        }

        .mobile-nav-list {
            display: flex;
            flex-direction: column;
            gap: .25rem;
        }

        .mobile-nav-list a {
            padding: .7rem .85rem;
            border-radius: 10px;
            background: #F5F8FB;
            color: var(--text);
            font-weight: 600;
            font-size: .95rem;
        }

        .mobile-nav-list a.active {
            background: var(--main-light);
            color: var(--main-dark);
            box-shadow: inset 0 0 0 1px rgba(74, 127, 181, .28);
        }

        .cat-hero {
            position: relative;
            background: linear-gradient(rgba(29, 58, 85, .72), rgba(21, 44, 68, .68)), url("/assets/images/backpic/back-1.png") center / cover no-repeat;
            color: #fff;
            padding: clamp(3.5rem, 9vh, 6rem) 0;
            overflow: hidden;
        }

        .cat-hero .hero-breadcrumb .breadcrumb {
            margin-bottom: 1rem;
        }

        .cat-hero .breadcrumb-item,
        .cat-hero .breadcrumb-item a {
            color: rgba(255, 255, 255, .75);
            font-size: .86rem;
        }

        .cat-hero .breadcrumb-item a:hover {
            color: #fff;
        }

        .cat-hero .breadcrumb-item.active {
            color: #fff;
        }

        .cat-hero .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255, 255, 255, .56);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-size: .82rem;
            font-weight: 700;
            letter-spacing: 1.2px;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: .65rem;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .18);
            padding: .28rem .65rem;
            border-radius: 60px;
            line-height: 1;
        }

        .cat-hero .page-title {
            font-size: clamp(2.4rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            margin: .3rem 0 1rem;
            color: #fff;
        }

        .cat-hero .hero-lead {
            font-size: 1.12rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .92);
            max-width: 720px;
            margin-bottom: 1.4rem;
        }

        .cat-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: .45rem;
            margin-bottom: 1.8rem;
        }

        .cat-hero .hero-tags span {
            font-size: .84rem;
            color: #fff;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            padding: .2rem .65rem;
            border-radius: 20px;
        }

        .btn-accent,
        .btn-accent:hover {
            background: var(--accent);
            border: 1px solid var(--accent);
            color: #fff;
            border-radius: var(--rounded-md);
            font-weight: 600;
            padding: .72rem 1.45rem;
            font-size: .94rem;
            line-height: 1.4;
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            box-shadow: 0 6px 16px rgba(217, 119, 43, .18);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            box-shadow: 0 10px 22px rgba(217, 119, 43, .24);
        }

        .btn-accent:active {
            transform: scale(.99);
        }

        .btn-accent:focus-visible,
        .btn-outline-light:focus-visible,
        .btn-outline-main:focus-visible {
            outline: 2px solid rgba(255, 255, 255, .8);
            outline-offset: 2px;
        }

        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, .8);
            color: #fff;
            background: transparent;
            border-radius: var(--rounded-md);
            font-weight: 600;
            padding: .72rem 1.45rem;
            font-size: .94rem;
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            line-height: 1.4;
        }

        .btn-outline-light:hover {
            background: #fff;
            color: var(--text);
            border-color: #fff;
        }

        .btn-outline-light:active {
            transform: scale(.99);
        }

        .section {
            padding: clamp(3.2rem, 8vh, 5.5rem) 0;
        }

        .section-tint {
            background: #EEF3F8;
        }

        .section-head {
            margin-bottom: 2.5rem;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            color: var(--main-dark);
            font-size: .82rem;
            font-weight: 700;
            letter-spacing: .6px;
            margin-bottom: .45rem;
        }

        .section-eyebrow::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.35rem);
            font-weight: 800;
            color: var(--text);
            letter-spacing: -.2px;
            line-height: 1.3;
            margin: .3rem 0 .7rem;
        }

        .section-sub {
            font-size: 1rem;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.75;
        }

        .feature-main-card,
        .feature-small-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--rounded-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: transform .2s ease, box-shadow .25s ease;
        }

        .feature-main-card:hover,
        .feature-small-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .feature-main-card .feature-content {
            padding: 1.6rem 1.6rem 1.8rem;
        }

        .feature-main-card .feature-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            background: var(--main-light);
        }

        .feature-small-card {
            flex: 1;
            padding: 1.5rem 1.5rem 1.65rem;
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--main-light);
            color: var(--main-dark);
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }

        .feature-main-card .feature-icon {
            background: rgba(217, 119, 43, .14);
            color: var(--accent-dark);
        }

        .feature-main-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: .6rem;
        }

        .feature-small-card h3 {
            font-size: 1.06rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: .55rem;
        }

        .feature-main-card p,
        .feature-small-card p {
            font-size: .9rem;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .pill-row {
            display: flex;
            flex-wrap: wrap;
            gap: .4rem;
            margin-top: .9rem;
        }

        .pill-row span {
            padding: .2rem .7rem;
            background: #F3F6F9;
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: .78rem;
            color: var(--muted);
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-weight: 600;
            font-size: .86rem;
            margin-top: .8rem;
            color: var(--main-dark);
        }

        .card-link:hover {
            color: var(--accent);
        }

        .cover-frame {
            background: #EAF0F5;
            border-radius: var(--rounded-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid #E1E9F0;
        }

        .cover-frame img {
            width: 100%;
            height: 390px;
            object-fit: cover;
        }

        .cover-caption {
            display: block;
            font-size: .8rem;
            color: var(--light-muted);
            padding: .7rem 1rem;
            background: #F9FBFD;
        }

        .step-list {
            list-style: none;
            padding: 0;
            margin: 1.4rem 0 0;
        }

        .step-list li {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            padding: .9rem 0 .95rem;
            border-bottom: 1px solid rgba(220, 228, 236, .72);
        }

        .step-list li:last-child {
            border-bottom: 0;
        }

        .step-num {
            flex: 0 0 auto;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: var(--main-light);
            color: var(--main-dark);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: .9rem;
            letter-spacing: -.3px;
        }

        .step-list h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: .2rem;
        }

        .step-list p {
            font-size: .9rem;
            color: var(--muted);
            margin: 0;
            line-height: 1.65;
        }

        .note-box {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--rounded-lg);
            padding: 1.2rem 1.4rem;
            color: var(--muted);
            font-size: .88rem;
            line-height: 1.75;
            box-shadow: var(--shadow);
            display: flex;
            gap: .7rem;
            align-items: flex-start;
        }

        .note-box i {
            color: var(--accent);
            margin-top: .2rem;
        }

        .faq-side {
            padding-right: 1rem;
        }

        .faq-list .accordion-item {
            border: 0;
            border-bottom: 1px solid var(--border);
            background: transparent;
            border-radius: 0;
            margin-bottom: .35rem;
        }

        .faq-list .accordion-button {
            background: transparent;
            border-radius: 10px !important;
            padding: 1.1rem .6rem 1.1rem 0;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            box-shadow: none;
            border: 0;
            align-items: center;
            gap: .6rem;
        }

        .faq-list .accordion-button:hover,
        .faq-list .accordion-button:not(.collapsed) {
            color: var(--main-dark);
            background: transparent;
        }

        .faq-list .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(42, 95, 138, .3);
            outline-offset: 2px;
        }

        .faq-list .accordion-button::after {
            display: none;
        }

        .accordion-add {
            width: 22px;
            height: 22px;
            border: 1px solid #BCCBD6;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 800;
            color: var(--main-dark);
            background: #fff;
            margin-left: auto;
            flex: 0 0 auto;
            line-height: 1;
        }

        .accordion-button:not(.collapsed) .accordion-add {
            border-color: var(--accent);
            color: var(--accent);
        }

        .accordion-add::before {
            content: "\002B";
        }

        .accordion-button:not(.collapsed) .accordion-add::before {
            content: "\2212";
        }

        .faq-list .accordion-body {
            padding: .2rem .6rem 1.2rem 0;
            color: var(--muted);
            font-size: .92rem;
            line-height: 1.75;
        }

        .cta-band {
            background: #EDF3F8;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: clamp(3rem, 8vh, 5rem) 0;
        }

        .cta-inner {
            background: linear-gradient(135deg, #223E58 0%, #2C5F8A 100%);
            border-radius: 24px;
            padding: clamp(2rem, 5vw, 4rem);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-inner::after {
            content: "\f11b";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: -30px;
            bottom: -50px;
            font-size: 10rem;
            color: rgba(255, 255, 255, .08);
            pointer-events: none;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 800;
            margin-bottom: .5rem;
            position: relative;
            z-index: 1;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, .84);
            max-width: 680px;
            margin: 0 auto 1.4rem;
            font-size: 1rem;
            line-height: 1.75;
            position: relative;
            z-index: 1;
        }

        .cta-inner .btn-accent {
            background: var(--accent);
            border: 1px solid var(--accent);
            color: #fff;
        }

        .cta-inner .btn-ghost-white {
            border: 1px solid rgba(255, 255, 255, .75);
            color: #fff;
            background: rgba(255, 255, 255, .08);
            padding: .72rem 1.4rem;
            border-radius: var(--rounded-md);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: .45rem;
        }

        .cta-inner .btn-ghost-white:hover {
            background: #fff;
            color: var(--main-dark);
        }

        .footer {
            background: #223242;
            color: #C7D1D9;
            font-size: .9rem;
        }

        .footer h6 {
            color: #E7EDF2;
            font-weight: 700;
            font-size: .98rem;
            margin-bottom: .8rem;
        }

        .brand-footer {
            color: #fff;
            font-weight: 800;
            font-size: 1.45rem;
        }

        .brand-footer .brand-dot {
            color: var(--accent);
        }

        .footer .link-list a {
            color: #BFD0DC;
            text-decoration: none;
            font-size: .88rem;
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer .link-list a:hover {
            color: #fff;
            padding-left: 3px;
        }

        .footer hr {
            border-color: rgba(255, 255, 255, .16);
            margin: 1.8rem 0;
        }

        .footer small {
            font-size: .82rem;
        }

        .footer a:focus-visible,
        .site-header a:focus-visible,
        .btn-accent:focus-visible {
            outline: 2px solid rgba(255, 255, 255, .7);
            outline-offset: 2px;
        }

        .d-inline-flex.text-secondary.small {
            color: var(--main-dark) !important;
        }

        @media (max-width: 991px) {
            .search-form {
                width: 220px;
            }
            .topbar-search {
                display: block;
            }
            .category-nav .nav-link {
                font-size: .88rem;
                padding: .55rem .55rem;
            }
        }

        @media (max-width: 767px) {
            .cat-hero {
                padding: 3.2rem 0 4rem;
            }
            .cat-hero .hero-lead {
                font-size: 1rem;
            }
            .section {
                padding: 3rem 0;
            }
            .feature-main-card .feature-img {
                height: 170px;
            }
            .cover-frame img {
                height: 250px;
            }
            .page-title {
                font-size: 2rem;
            }
            .cta-inner {
                padding: 2rem 1.5rem;
                text-align: center;
            }
            .cta-inner p {
                margin-left: auto;
                margin-right: auto;
            }
            .faq-side {
                padding-right: 0;
                margin-bottom: 1rem;
            }
        }

        @media (max-width: 576px) {
            body {
                font-size: 15px;
            }
            .site-title {
                font-size: 1.12rem;
            }
            .cat-hero .hero-lead {
                font-size: .96rem;
            }
            .feature-main-card .feature-content {
                padding: 1.25rem;
            }
            .feature-small-card {
                padding: 1.2rem;
            }
            .note-box {
                padding: 1rem;
                flex-wrap: wrap;
            }
            .section-sub {
                font-size: .95rem;
            }
            .cta-inner h2 {
                font-size: 1.4rem;
            }
            .cta-inner p {
                font-size: .92rem;
            }
        }

        @media (max-width: 375px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-tags span {
                font-size: .78rem;
            }
            .cta-inner .btn-accent,
            .cta-inner .btn-ghost-white {
                width: 100%;
                justify-content: center;
                margin-bottom: .5rem;
            }
        }

        @media (hover: none) {
            .feature-main-card:hover,
            .feature-small-card:hover {
                transform: none;
                box-shadow: var(--shadow);
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                transition-duration: .01ms !important;
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
            }
        }

/* roulang page: article */
:root{
    --primary:#4A7FB5;
    --primary-deep:#2C5F8A;
    --primary-soft:#EAF1F8;
    --accent:#D9943F;
    --accent-deep:#BC7629;
    --accent-soft:#FBF1E2;
    --body-bg:#F5F8FB;
    --surface:#FFFFFF;
    --surface-alt:#F8FAFD;
    --text:#253245;
    --text-secondary:#5E6C78;
    --text-weak:#84909C;
    --border:#DCE4EC;
    --footer-bg:#1F2A36;
    --radius:14px;
    --radius-sm:9px;
    --shadow-sm:0 2px 6px rgba(21,43,68,.05);
    --shadow:0 8px 24px rgba(21,43,68,.06);
    --shadow-lg:0 18px 40px rgba(21,43,68,.1);
    --container-width:1200px;
    --ease:all .2s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
    background:var(--body-bg);
    color:var(--text);
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto}
a{text-decoration:none;color:var(--primary-deep);transition:var(--ease)}
a:hover{color:var(--primary)}
a:focus-visible,.btn:focus-visible,.form-control:focus-visible,.nav-link:focus-visible,button:focus-visible{
    outline:2px solid rgba(42,95,138,.45);
    outline-offset:2px;
    box-shadow:none;
}
.container{max-width:var(--container-width);padding-left:20px;padding-right:20px}
.btn{border-radius:var(--radius-sm);font-weight:600;font-size:15px;padding:.55rem 1.1rem;border:1px solid transparent;transition:var(--ease)}
.btn:active{transform:scale(.99)}
.btn-main{
    background:var(--accent);
    border-color:var(--accent);
    color:#fff;
}
.btn-main:hover{
    background:var(--accent-deep);
    border-color:var(--accent-deep);
    color:#fff;
    box-shadow:0 8px 18px rgba(217,148,63,.35);
}
.btn-outline-main{
    background:#fff;
    border-color:var(--border);
    color:var(--primary-deep);
}
.btn-outline-main:hover{
    border-color:var(--primary-deep);
    background:var(--primary-deep);
    color:#fff;
}
.btn-ghost{
    background:transparent;
    border-color:var(--border);
    color:var(--text);
}
.btn-ghost:hover{
    border-color:var(--text-secondary);
    color:var(--text);
    background:var(--surface-alt);
}
.btn-sm{padding:.36rem .75rem;font-size:13px}
.section{padding:clamp(4rem,10vh,6.5rem) 0}
.text-primary{color:var(--primary-deep)!important}
.text-secondary{color:var(--text-secondary)!important}
.bg-main{background:var(--body-bg)!important}
.badge-main{
    background:var(--primary-soft);
    color:var(--primary-deep);
    font-weight:600;
    border-radius:6px;
    padding:.36rem .68rem;
    font-size:13px;
}
.badge-accent{
    background:var(--accent-soft);
    color:var(--accent-deep);
    font-weight:600;
    border-radius:6px;
    padding:.36rem .68rem;
    font-size:13px;
}
.site-header{
    position:sticky;
    top:0;
    z-index:1030;
    background:rgba(255,255,255,.96);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    box-shadow:0 1px 0 rgba(21,43,68,.06);
    transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:0 5px 20px rgba(21,43,68,.07)}
.topbar{
    min-height:58px;
    border-bottom:1px solid var(--border);
    background:#fff;
}
.site-title{
    color:var(--text);
    text-decoration:none;
    font-weight:800;
    font-size:1.4rem;
    letter-spacing:.01em;
}
.site-title:hover{color:var(--text)}
.site-title .logo-cn span{display:inline-block}
.site-title .brand-dot{
    color:var(--accent);
    font-weight:900;
    padding:0 1px;
    letter-spacing:-.01em;
}
.search-form.input-group{width:300px;flex-wrap:nowrap}
.search-form .form-control{
    border:1px solid var(--border);
    border-right:0;
    border-radius:var(--radius-sm) 0 0 var(--radius-sm);
    padding:.48rem .85rem;
    font-size:14px;
    background:var(--surface-alt);
    color:var(--text);
    height:38px;
}
.search-form .form-control::placeholder{color:var(--text-weak)}
.search-form .form-control:focus{
    background:#fff;
    border-color:var(--primary);
    box-shadow:0 0 0 .2rem rgba(74,127,181,.12);
}
.search-form .btn{
    border:1px solid var(--border);
    border-left:0;
    color:var(--primary-deep);
    height:38px;
    border-radius:0 var(--radius-sm) var(--radius-sm) 0;
    background:var(--surface-alt);
}
.search-form .btn:hover{
    background:var(--primary-soft);
    color:var(--primary);
}
.navbar-mega{
    background:#fff;
    border-bottom:1px solid var(--border);
}
.category-nav{
    overflow-x:auto;
    scrollbar-width:none;
    -ms-overflow-style:none;
    flex-wrap:nowrap;
    white-space:nowrap;
    min-height:50px;
}
.category-nav::-webkit-scrollbar{display:none}
.category-nav .nav-link{
    display:inline-flex;
    align-items:center;
    padding:.5rem .85rem;
    color:var(--text);
    font-size:15px;
    font-weight:500;
    border-radius:8px;
    white-space:nowrap;
    transition:all .18s ease;
    border-bottom:2px solid transparent;
}
.category-nav .nav-link:hover{
    color:var(--primary-deep);
    background:var(--primary-soft);
}
.category-nav .nav-link.active{
    color:var(--primary-deep);
    background:var(--primary-soft);
    font-weight:600;
}
.nav-dot{font-size:12px;color:var(--text-weak);margin:0 6px}
.offcanvas{
    max-width:320px;
    width:82%;
    background:#fff;
}
.offcanvas-header{
    border-bottom:1px solid var(--border);
    background:var(--body-bg);
}
.offcanvas-title{
    color:var(--text);
    font-weight:700;
}
.mobile-offcanvas-nav{
    display:flex;
    flex-direction:column;
    gap:4px;
}
.mobile-offcanvas-nav .m-link{
    display:flex;
    align-items:center;
    gap:12px;
    padding:.8rem 1rem;
    border-radius:var(--radius-sm);
    color:var(--text);
    font-weight:500;
    font-size:16px;
    background:var(--surface);
}
.mobile-offcanvas-nav .m-link i{width:20px;text-align:center;color:var(--primary)}
.mobile-offcanvas-nav .m-link:hover{
    background:var(--primary-soft);
    color:var(--primary-deep);
}
.mobile-offcanvas-nav .m-link.m-active{
    background:var(--primary-soft);
    color:var(--primary-deep);
    font-weight:700;
}
.breadcrumb-area{
    background:#fff;
    border-bottom:1px solid var(--border);
    padding:12px 0;
    margin:0;
}
.breadcrumb-area .breadcrumb{
    margin:0;
    font-size:13px;
    color:var(--text-weak);
}
.breadcrumb-area .breadcrumb-item a{
    color:var(--text-secondary);
    text-decoration:none;
}
.breadcrumb-area .breadcrumb-item a:hover{color:var(--primary-deep)}
.breadcrumb-area .breadcrumb-item.active{color:var(--text)}
.breadcrumb-item+.breadcrumb-item::before{
    content:"\f105";
    font-family:"Font Awesome 6 Free";
    font-weight:900;
    color:var(--text-weak);
    opacity:.7;
}
.article-main{
    background:var(--body-bg);
}
.post-single-wrap{
    max-width:900px;
    margin:0 auto;
    padding:clamp(2.5rem,6vh,3.8rem) 0 1rem;
}
.post-header{
    padding:0 0 1.8rem;
    margin-bottom:1.6rem;
    border-bottom:1px solid var(--border);
}
.post-badge-line{
    display:flex;
    align-items:center;
    gap:12px;
    margin-bottom:.8rem;
}
.post-badge{
    background:var(--primary-soft);
    color:var(--primary-deep);
    border-radius:999px;
    padding:.26rem .8rem;
    font-size:13px;
    font-weight:600;
}
.post-title{
    font-size:clamp(1.7rem,3vw,2.3rem);
    line-height:1.3;
    font-weight:800;
    color:var(--text);
    letter-spacing:-.01em;
    margin:0 0 1.2rem;
}
.post-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:1.2rem;
    color:var(--text-secondary);
    font-size:14px;
}
.post-meta i{color:var(--primary)}
.post-meta .meta-sep{
    width:4px;
    height:4px;
    border-radius:50%;
    background:var(--border);
}
.post-cover{
    margin:0 0 2.5rem;
    border-radius:18px;
    overflow:hidden;
    background:var(--border);
    box-shadow:var(--shadow);
}
.post-cover img{
    width:100%;
    aspect-ratio:16/7;
    object-fit:cover;
    display:block;
    transition:transform .5s ease;
}
.post-body{
    font-size:17px;
    line-height:1.85;
    color:#33404E;
    font-weight:400;
    word-break:break-word;
}
.post-body p{
    margin:0 0 1.35em;
}
.post-body h2{
    font-size:1.6rem;
    font-weight:700;
    color:var(--text);
    margin:2rem 0 1rem;
    padding-bottom:.4rem;
    border-bottom:1px solid var(--border);
}
.post-body h3{
    font-size:1.3rem;
    font-weight:700;
    color:var(--text);
    margin:1.8rem 0 .8rem;
}
.post-body h4{
    font-size:1.13rem;
    font-weight:700;
    color:var(--text);
    margin:1.5rem 0 .6rem;
}
.post-body ul,
.post-body ol{
    margin:0 0 1.4rem;
    padding-left:1.4rem;
}
.post-body li{
    margin-bottom:.5rem;
}
.post-body a:not(.btn){
    color:var(--primary-deep);
    text-decoration:underline;
    text-decoration-color:rgba(44,95,138,.35);
    text-underline-offset:3px;
}
.post-body a:not(.btn):hover{
    color:var(--accent-deep);
    text-decoration-color:var(--accent-deep);
}
.post-body img{
    border-radius:14px;
    margin:1.5rem 0;
    width:100%;
}
.post-body blockquote{
    background:var(--surface-alt);
    border-left:4px solid var(--primary);
    border-radius:0 12px 12px 0;
    padding:1.1rem 1.3rem;
    margin:1.6rem 0;
    color:var(--text-secondary);
    font-size:16px;
}
.post-body blockquote p{margin:0}
.post-body figure{
    margin:1.6rem 0;
}
.post-body table{
    width:100%;
    border-collapse:collapse;
    margin:1.5rem 0;
    font-size:15px;
}
.post-body table th,
.post-body table td{
    border:1px solid var(--border);
    padding:.6rem .8rem;
}
.post-body table th{
    background:var(--surface-alt);
    color:var(--text);
    font-weight:600;
}
.post-tags{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin:2.2rem 0 0;
    padding-top:1.4rem;
    border-top:1px solid var(--border);
}
.post-tags a{
    background:var(--surface-alt);
    border:1px solid var(--border);
    border-radius:999px;
    font-size:13px;
    color:var(--text-secondary);
    padding:.32rem .78rem;
    transition:var(--ease);
}
.post-tags a:hover{
    border-color:var(--primary);
    color:var(--primary-deep);
    background:var(--primary-soft);
}
.post-back-row{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    align-items:center;
    justify-content:space-between;
    margin-top:2rem;
    padding:1rem 0 .4rem;
}
.post-back-row .text-helper{
    font-size:14px;
    color:var(--text-weak);
}
.empty-state{
    background:#fff;
    border:1px dashed #C6D0DB;
    border-radius:var(--radius);
    padding:clamp(2.5rem,7vh,4.5rem) 1.5rem;
    text-align:center;
}
.empty-state .empty-icon{
    width:76px;
    height:76px;
    margin:0 auto 1.4rem;
    display:flex;
    align-items:center;
    justify-content:center;
    background:var(--body-bg);
    border-radius:50%;
    color:var(--primary);
    font-size:2rem;
}
.empty-state h1{
    font-size:1.6rem;
    font-weight:800;
    color:var(--text);
    margin-bottom:.8rem;
}
.empty-state p{
    color:var(--text-secondary);
    max-width:420px;
    margin:0 auto 1.6rem;
    font-size:15px;
}
.post-cta{
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:1.6rem;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:1rem;
    margin-top:2rem;
}
.post-cta .cta-text{
    font-size:1.05rem;
    font-weight:700;
    color:var(--text);
}
.post-cta .cta-sub{
    color:var(--text-secondary);
    font-size:14px;
    margin-top:.2rem;
}
.related-section{
    padding-bottom:clamp(3rem,7vh,5rem);
}
.section-heading{
    display:flex;
    flex-wrap:wrap;
    align-items:flex-end;
    justify-content:space-between;
    gap:1rem;
    margin-bottom:2rem;
}
.section-heading .sec-title{
    font-size:1.75rem;
    font-weight:800;
    letter-spacing:-.01em;
    margin:0;
    color:var(--text);
}
.section-heading .sec-title small{
    display:block;
    font-size:.95rem;
    color:var(--text-weak);
    font-weight:400;
    letter-spacing:.02em;
    margin-top:.35rem;
}
.related-card{
    display:flex;
    flex-direction:column;
    height:100%;
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius);
    overflow:hidden;
    transition:all .22s ease;
    box-shadow:var(--shadow-sm);
}
.related-card:hover{
    transform:translateY(-3px);
    box-shadow:var(--shadow-lg);
    border-color:#BFCFDE;
    color:inherit;
}
.related-card .card-thumb{
    aspect-ratio:16/10;
    background:var(--border);
    overflow:hidden;
    position:relative;
}
.related-card .card-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .35s ease;
}
.related-card:hover .card-thumb img{
    transform:scale(1.04);
}
.related-card .card-thumb .mini-tag{
    position:absolute;
    left:12px;
    top:12px;
    background:rgba(255,255,255,.92);
    color:var(--primary-deep);
    padding:.24rem .62rem;
    border-radius:99px;
    font-size:12px;
    font-weight:700;
    letter-spacing:.02em;
}
.related-card .card-body{
    padding:1rem 1.1rem 1.2rem;
}
.related-card .card-body h3{
    font-size:16px;
    font-weight:700;
    color:var(--text);
    line-height:1.45;
    margin:0 0 .55rem;
    transition:color .2s;
}
.related-card:hover .card-body h3{color:var(--primary-deep)}
.related-card .card-body p{
    font-size:14px;
    color:var(--text-secondary);
    margin:0;
    line-height:1.6;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.related-card .card-footer{
    margin-top:auto;
    padding:.65rem 1.1rem 1rem;
    background:#fff;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
}
.related-card .card-date{
    font-size:13px;
    color:var(--text-weak);
}
.related-card .card-link{
    font-size:13px;
    font-weight:700;
    color:var(--primary-deep);
    display:inline-flex;
    align-items:center;
    gap:6px;
}
.related-card .card-link i{
    transition:transform .2s ease;
}
.related-card:hover .card-link i{
    transform:translateX(3px);
}
.view-more-row{
    margin-top:28px;
    text-align:center;
}
.footer{
    background:var(--footer-bg);
    color:#C3CDD7;
    position:relative;
    margin-top:2rem;
}
.footer .brand-footer{
    color:#fff;
}
.footer .brand-footer .logo-cn{color:#fff}
.footer .brand-footer .brand-dot{color:var(--accent)}
.footer h6{
    color:#F0F4F9;
    font-weight:600;
    font-size:15px;
    margin-bottom:.8rem;
    letter-spacing:.02em;
}
.footer .link-list a{
    color:#AEB7C0;
    font-size:14px;
    transition:all .18s;
    display:inline-block;
}
.footer .link-list a:hover{
    color:#fff;
    transform:translateX(3px);
}
.footer hr{
    border:0;
    border-top:1px solid #33465A;
    margin:1.2rem 0 .9rem;
    opacity:1;
}
.footer .footer-map-col li{display:block}
.footer small a{color:#B9C3CE}
.footer small a:hover{color:#fff}
@media (max-width:991.98px){
    .topbar{
        min-height:54px;
    }
    .search-form.input-group{
        width:220px;
    }
    .category-nav{
        overflow-x:auto;
        scrollbar-width:none;
        -webkit-overflow-scrolling:touch;
    }
    .category-nav .nav-link{
        font-size:14px;
        padding:.5rem .7rem;
    }
}
@media (max-width:767.98px){
    .container{
        padding-left:16px;
        padding-right:16px;
    }
    .section{
        padding:3rem 0;
    }
    .site-title{
        font-size:1.2rem;
    }
    .topbar{
        padding-top:4px;
        padding-bottom:4px;
    }
    .navbar-mega .category-nav .nav-link{
        font-size:14px;
    }
    .post-single-wrap{
        padding-top:1.8rem;
    }
    .post-title{
        font-size:1.65rem;
    }
    .post-cover img{
        aspect-ratio:16/10;
    }
    .related-card{
        min-height:auto;
    }
    .post-back-row{
        flex-direction:column;
        align-items:flex-start;
    }
    .post-cta{
        padding:1.2rem;
    }
    .section-heading .sec-title{
        font-size:1.4rem;
    }
    .footer .link-list{
        padding-left:0;
    }
}
@media (max-width:575.98px){
    body{
        font-size:15px;
    }
    .post-title{
        font-size:1.35rem;
        line-height:1.32;
    }
    .post-meta{
        gap:.7rem;
        font-size:13px;
    }
    .post-body{
        font-size:16px;
        line-height:1.8;
    }
    .post-body h2{
        font-size:1.3rem;
    }
    .post-body h3{
        font-size:1.14rem;
    }
    .related-section .sec-title{
        font-size:1.22rem;
    }
    .btn-main,
    .btn-outline-main{
        width:100%;
    }
    .post-back-row .btn{
        margin-top:2px;
        width:100%;
        display:flex;
        justify-content:center;
    }
}
@media (prefers-reduced-motion:reduce){
    *{
        transition:none!important;
        animation:none!important;
        scroll-behavior:auto!important;
    }
    .related-card:hover{
        transform:none!important;
    }
}

/* roulang page: category3 */
:root {
  --brand-blue: #4A7FB5;
  --brand-deep: #2C5F8A;
  --brand-deeper: #1F4B73;
  --accent: #D97F2C;
  --accent-hover: #C06C1A;
  --accent-soft: #FCEADD;
  --bg-main: #F5F8FB;
  --bg-soft: #EDF2F6;
  --bg-white: #FFFFFF;
  --border: #DCE4EC;
  --text-main: #1E2C3A;
  --text-body: #3E4E5D;
  --text-soft: #5E6E7B;
  --text-mute: #84909C;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 14px rgba(29, 45, 66, .05);
  --shadow-md: 0 12px 30px rgba(29, 45, 66, .08);
  --shadow-lg: 0 20px 48px rgba(29, 45, 66, .09);
  --section-space: clamp(4rem, 10vh, 7rem);
  --font-cn: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
html { scroll-padding-top: 130px; }
body {
  margin: 0;
  font-family: var(--font-cn);
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
*, *::before, *::after { box-sizing: border-box; }
a { color: var(--brand-deep); text-decoration-color: rgba(44, 95, 138, .35); text-decoration-thickness: 1px; text-underline-offset: 4px; transition: color .2s ease; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; display: block; }
section { scroll-margin-top: 130px; }
h1, h2, h3, h4, h5, h6 { color: var(--text-main); line-height: 1.4; margin-top: 0; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }
p { margin-top: 0; }
.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
.section-pad { padding-top: var(--section-space); padding-bottom: var(--section-space); }
.section-heading .section-kicker {
  display: inline-flex; align-items: center; gap: 8px; font-size: .85rem; font-weight: 600;
  color: var(--brand-deep); letter-spacing: .12em;
}
.section-heading .section-kicker::before { content: ''; width: 28px; height: 2px; background: var(--accent); border-radius: 2px; display: inline-block; }
.btn { border-radius: 10px; font-size: .95rem; padding: .62rem 1.15rem; font-weight: 600; border: 1px solid transparent; display: inline-flex; align-items: center; justify-content: center; gap: 8px; transition: background .2s, border-color .2s, box-shadow .2s, color .2s, transform .15s; }
.btn:active { transform: scale(.98); }
.btn:focus-visible, .form-control:focus { outline: 2px solid rgba(42, 95, 138, .35); outline-offset: 2px; box-shadow: none !important; }
.btn-accent { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; box-shadow: 0 8px 24px rgba(217, 127, 44, .22); }
.btn-main { background: var(--brand-deep); border-color: var(--brand-deep); color: #fff; }
.btn-main:hover { background: var(--brand-deeper); border-color: var(--brand-deeper); color: #fff; box-shadow: 0 10px 24px rgba(31, 75, 115, .2); }
.btn-outline-main { background: #fff; border-color: #9DB5CC; color: var(--brand-deep); }
.btn-outline-main:hover { border-color: var(--brand-deep); color: var(--brand-deep); background: #EEF4F9; }
.btn-white-outline { background: transparent; border-color: rgba(255,255,255,.5); color: #fff; }
.btn-white-outline:hover { background: rgba(255,255,255,.12); border-color: #fff; color: #fff; }
.text-accent { color: var(--accent) !important; }
.text-muted { color: var(--text-soft) !important; }
.small { font-size: .84rem; }

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 1050;
  box-shadow: 0 2px 12px rgba(29,45,66,.03);
}
.site-header .topbar { min-height: 60px; }
.site-title { color: var(--text-main); font-size: 1.25rem; font-weight: 700; text-decoration: none; line-height: 1.2; letter-spacing: .01em; }
.site-title .logo-cn { font-weight: 800; }
.site-title .brand-dot { color: var(--accent); font-style: normal; margin: 0 .1rem; }
.site-title:hover { color: var(--brand-deep); }
.search-form { width: 240px; }
.search-form .form-control { border: 1px solid var(--border); background: var(--bg-main); border-radius: 8px 0 0 8px; font-size: .9rem; }
.search-form .form-control::placeholder { color: #9AA5AF; }
.search-form .btn { border: 1px solid var(--border); border-left: 0; background: #fff; color: var(--brand-deep); border-radius: 0 8px 8px 0; }
.search-form .btn:hover { background: var(--bg-soft); color: var(--brand-deep); }
.navbar-mega { background: #FDFEFF; border-top: 1px solid #EDF1F5; position: relative; }
.navbar-mega .category-nav { min-height: 48px; overflow-x: auto; white-space: nowrap; -ms-overflow-style: none; scrollbar-width: none; }
.navbar-mega .category-nav::-webkit-scrollbar { display: none; }
.navbar-mega .nav-link { color: var(--text-body); font-size: .93rem; padding: .55rem .7rem; border-radius: 6px; display: inline-flex; align-items: center; gap: .3rem; font-weight: 500; position: relative; }
.navbar-mega .nav-link i { font-size: .76rem; }
.navbar-mega .nav-link:hover, .navbar-mega .nav-link:focus { color: var(--brand-deep); background: #F0F5FA; }
.navbar-mega .nav-link.active { color: var(--brand-deep); font-weight: 600; background: #E9F1F8; }
.navbar-mega .nav-link.active::after { content: ''; position: absolute; left: 12px; right: 12px; bottom: 1px; height: 2px; border-radius: 3px; background: var(--brand-deep); }
.category-label { color: var(--text-mute); font-size: .8rem; letter-spacing: .08em; }
.offcanvas { --bs-offcanvas-width: 310px; z-index: 1090; }
.offcanvas-header { border-bottom: 1px solid var(--border); }
.offcanvas .mobile-brand { font-weight: 800; font-size: 1.15rem; color: var(--text-main); }
.offcanvas .mobile-brand .brand-dot { color: var(--accent); }
.offcanvas .nav-mobile a { display: block; padding: .8rem 0; border-bottom: 1px solid #EEF1F4; color: var(--text-body); text-decoration: none; font-size: .96rem; font-weight: 500; }
.offcanvas .nav-mobile a:hover { color: var(--brand-deep); padding-left: 4px; }
.mobile-search .input-group { border-radius: 10px; }
.mobile-search .input-group .form-control { border: 1px solid var(--border); }
.mobile-search .input-group .btn { border: 1px solid var(--border); border-left: 0; background: #fff; }

.category-hero { background: linear-gradient(180deg, #EAF1F7 0%, #F5F8FB 70%, var(--bg-main) 100%); padding: 5rem 0 3.5rem; overflow: hidden; position: relative; }
.category-hero .hero-pattern { position: absolute; inset: 0; pointer-events: none; opacity: .5; background-image: radial-gradient(#C4D3E2 1px, transparent 1px); background-size: 22px 22px; mask-image: linear-gradient(90deg, #fff, transparent); }
.eyebrow-pill { display: inline-flex; align-items: center; gap: 8px; background: #fff; border: 1px solid #D7E2EC; color: var(--brand-deep); font-size: .84rem; font-weight: 600; padding: .38rem .9rem; border-radius: 100px; box-shadow: var(--shadow-sm); }
.category-hero h1 { font-size: clamp(2.5rem, 4.4vw, 3.6rem); font-weight: 800; letter-spacing: -.02em; margin: 1rem 0 .8rem; }
.hero-sub { max-width: 560px; color: var(--text-body); font-size: clamp(1rem, 1.4vw, 1.12rem); line-height: 1.8; margin-bottom: 1.7rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 2rem; }
.hero-actions .btn-main, .hero-actions .btn-accent { min-width: 158px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 1.2rem; color: var(--text-soft); font-size: .85rem; margin-top: 1rem; }
.hero-meta i { color: var(--brand-blue); }
.hero-media { position: relative; }
.hero-media .hero-img-wrap { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid #D7E2EC; box-shadow: var(--shadow-lg); background: var(--bg-soft); }
.hero-media .hero-img-wrap img { height: 380px; width: 100%; object-fit: cover; }
.float-event-card { position: absolute; right: -14px; bottom: 22px; background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: var(--radius-md); padding: .85rem 1.1rem; box-shadow: var(--shadow-md); max-width: 220px; font-size: .85rem; }
.float-event-card strong { display: block; color: var(--text-main); font-size: .95rem; }
.float-event-card span { color: var(--text-soft); }
.hero-scroll-hint { position: absolute; bottom: -16px; left: 0; color: var(--text-mute); font-size: .78rem; display: flex; align-items: center; gap: 6px; }
.hero-scroll-hint i { color: var(--brand-blue); animation: bump 1.8s infinite; }
@keyframes bump { 0%, 100% { transform: translateY(0); opacity: .8; } 50% { transform: translateY(5px); opacity: 1; } }

.signal-strip { background: #fff; border-bottom: 1px solid var(--border); padding: 1.25rem 0; }
.signal-item { display: flex; align-items: center; gap: 12px; border-right: 1px solid #E6ECF1; padding: 0 1.5rem; }
.signal-item:last-child { border-right: 0; }
.signal-icon { width: 38px; height: 38px; border-radius: 10px; background: #EDF4F9; color: var(--brand-deep); display: inline-flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0; border: 1px solid #D9E4EE; }
.signal-item .signal-txt strong { display: block; font-size: 1.05rem; font-weight: 800; color: var(--text-main); font-variant-numeric: tabular-nums; line-height: 1.3; }
.signal-item .signal-txt span { font-size: .82rem; color: var(--text-soft); }

.section-space { padding-top: var(--section-space); padding-bottom: var(--section-space); }
.alt-bg { background: #fff; border-top: 1px solid #EDF1F5; border-bottom: 1px solid #EDF1F5; }
.feature-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; }
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.feature-card .feature-card-body { padding: 2rem; }
.feature-icon { width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; background: #EAF2F8; color: var(--brand-deep); border: 1px solid #D4E1EE; }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; }

.showcase-card { background: #FBFCFF; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.showcase-media { position: relative; background: #E7EEF3; overflow: hidden; }
.showcase-media img { width: 100%; height: 260px; object-fit: cover; transition: transform .8s ease; }
.showcase-card:hover .showcase-media img { transform: scale(1.03); }
.featured-main-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; height: 100%; transition: box-shadow .25s, transform .25s; }
.featured-main-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.featured-main-card .featured-media { background: #EDF2F6; }
.featured-main-card .featured-media img { width: 100%; height: 300px; object-fit: cover; }
.featured-main-card .featured-body { padding: 1.8rem 1.8rem 2rem; }
.title-sm { font-size: 1.08rem; font-weight: 700; }
.tag-chip { display: inline-flex; align-items: center; gap: 6px; background: #EEF5FB; border: 1px solid #D8E4F0; color: var(--brand-deep); padding: .18rem .68rem; border-radius: 100px; font-size: .75rem; font-weight: 600; }
.tag-chip-accent { background: var(--accent-soft); border-color: #F2CDAE; color: #B8611C; }
.side-event-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.35rem 1.4rem; box-shadow: var(--shadow-sm); height: 100%; transition: transform .25s ease, box-shadow .25s ease; }
.side-event-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.side-event-card .meta { font-size: .82rem; color: var(--text-mute); }
.event-list-item { display: flex; gap: 14px; padding: 1rem 0; border-bottom: 1px solid #ECEFF3; align-items: flex-start; transition: background .2s; }
.event-list-item:last-child { border-bottom: 0; }
.event-list-item .event-date { background: #F2F7FC; border: 1px solid #DCE7EE; border-radius: 10px; text-align: center; min-width: 56px; padding: .45rem .2rem; font-variant-numeric: tabular-nums; }
.event-list-item .event-date strong { display: block; font-size: 1.15rem; line-height: 1.1; color: var(--brand-deep); }
.event-list-item .event-date span { font-size: .7rem; color: var(--text-mute); display: block; letter-spacing: .04em; }

.channel-list .channel-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1.1rem 1.2rem; display: flex; gap: 1rem; align-items: flex-start; transition: box-shadow .2s, border-color .2s; }
.channel-list .channel-item:hover { border-color: #A6BFD6; box-shadow: var(--shadow-sm); }
.channel-item .c-icon { width: 40px; height: 40px; border-radius: 10px; background: #EAF3FA; color: var(--brand-deep); display: inline-flex; flex: 0 0 40px; align-items: center; justify-content: center; }
.channel-item h4 { margin: .1rem 0 .2rem; font-size: .96rem; font-weight: 700; }
.channel-item p { margin: 0; font-size: .83rem; color: var(--text-soft); line-height: 1.6; }

.timeline-wrap { position: relative; padding-left: 1rem; }
.timeline-line { position: absolute; left: 25px; top: 8px; width: 2px; bottom: 8px; background: #DEE8F1; border-radius: 2px; }
.timeline-item { display: flex; gap: 1rem; position: relative; padding-bottom: 2.2rem; }
.timeline-dot { width: 50px; height: 50px; border-radius: 50%; background: #fff; border: 1px solid var(--border); display: inline-flex; flex: 0 0 50px; align-items: center; justify-content: center; color: var(--brand-deep); font-weight: 800; font-variant-numeric: tabular-nums; box-shadow: var(--shadow-sm); z-index: 1; }
.timeline-item.active .timeline-dot { border-color: var(--brand-blue); background: var(--brand-deep); color: #fff; }
.timeline-content { padding-top: .2rem; }
.timeline-content h4 { font-size: 1.06rem; font-weight: 700; margin-bottom: .3rem; }
.timeline-content p { color: var(--text-soft); font-size: .92rem; line-height: 1.7; max-width: 560px; margin-bottom: 0; }

.step-flow { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.step-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.4rem 1.3rem; position: relative; transition: box-shadow .2s; }
.step-card:hover { box-shadow: var(--shadow-md); }
.step-card .step-num { font-size: 1.1rem; font-weight: 800; color: var(--brand-blue); font-variant-numeric: tabular-nums; }
.step-card .step-num::after { content: ''; width: 24px; height: 2px; background: var(--accent); display: inline-block; vertical-align: middle; margin-left: 8px; }
.step-card h4 { font-size: 1.02rem; font-weight: 700; margin: .5rem 0 .4rem; }
.step-card p { font-size: .87rem; color: var(--text-soft); margin: 0; line-height: 1.7; }

.cta-banner { border-radius: var(--radius-lg); overflow: hidden; background: url('/assets/images/backpic/back-2.png') no-repeat center / cover; position: relative; padding: 3.5rem 2.6rem; color: #fff; box-shadow: var(--shadow-lg); }
.cta-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(17, 33, 48, .88) 0%, rgba(31, 49, 66, .72) 55%, rgba(44, 72, 97, .18) 100%); }
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { color: #fff; font-size: clamp(1.7rem, 2.6vw, 2.2rem); }
.cta-banner p { color: rgba(255,255,255,.85); max-width: 540px; }
.cta-banner .btn { min-width: 150px; }
.cta-banner .btn-accent { background: #E99B3E; border-color: #E99B3E; }
.cta-banner .btn-accent:hover { background: #F6A34A; border-color: #F6A34A; }

.accordion-custom .accordion-item { background: transparent; border: 0; border-bottom: 1px solid var(--border); border-radius: 0 !important; }
.accordion-custom .accordion-button { background: transparent; box-shadow: none; color: var(--text-main); font-weight: 700; font-size: 1rem; padding: 1.05rem .2rem; border-radius: 0 !important; }
.accordion-custom .accordion-button:not(.collapsed) { color: var(--brand-deep); border-bottom: 1px solid transparent; }
.accordion-custom .accordion-button::after { background-image: none; content: '+'; font-weight: 400; font-size: 1.3rem; display: inline-block; width: auto; height: auto; color: var(--brand-blue); display: flex; align-items: center; justify-content: center; transform: none; transition: transform .2s ease; }
.accordion-custom .accordion-button:not(.collapsed)::after { transform: rotate(45deg); color: var(--accent); }
.accordion-custom .accordion-button:focus { box-shadow: none; background: #F8FBFC; }
.accordion-custom .accordion-button:not(.collapsed):focus { background: #F4F9FC; }
.accordion-custom .accordion-body { color: var(--text-soft); background: #FDFEFF; border-left: 2px solid var(--brand-blue); margin-bottom: .3rem; border-radius: 0 6px 6px 0; font-size: .94rem; line-height: 1.75; }

.faq-side-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2rem; height: 100%; box-shadow: var(--shadow-sm); }
.faq-side-card .faq-cta-icon { width: 52px; height: 52px; border-radius: 14px; background: #ECF4FA; color: var(--brand-deep); display: inline-flex; align-items: center; justify-content: center; font-size: 1.35rem; }

.footer { background: #122433; color: #B9C2CB; border-top: 0; }
.footer h6 { color: #fff; font-size: .95rem; font-weight: 700; text-transform: none; margin-bottom: .75rem; letter-spacing: .02em; }
.footer .link-list a { color: #B4C0CA; text-decoration: none; font-size: .9rem; display: inline-block; transition: color .2s; }
.footer .link-list a:hover { color: #fff; padding-left: 2px; }
.footer hr { border-color: #2B4254; opacity: .6; margin-top: .5rem; margin-bottom: 1rem; }
.brand-footer .brand-dot { color: var(--accent); }

@media (min-width: 992px) {
  .category-hero { padding: 5.5rem 0 4rem; }
  .site-title { font-size: 1.32rem; }
  .search-form { width: 300px; }
}
@media (max-width: 991.98px) {
  .float-event-card { right: 6px; bottom: 12px; }
  .hero-media { margin-top: 2rem; }
  .signal-item { border-right: 0; }
  .step-flow { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767.98px) {
  .site-title { font-size: 1.15rem; }
  .navbar-mega .nav-link { padding: .45rem .6rem; }
  .category-hero h1 { font-size: 2.2rem; }
  .hero-media .hero-img-wrap img { height: 280px; }
  .signal-strip .row { row-gap: .8rem; }
  .signal-item { padding: .35rem .7rem; }
  .signal-item .signal-txt strong { font-size: .98rem; }
  .signal-item .signal-txt span { font-size: .8rem; }
  .cta-banner { padding: 2.2rem 1.4rem; }
  .float-event-card { position: relative; right: auto; bottom: auto; margin: -24px 12px 0; border-radius: 8px; box-shadow: var(--shadow-md); }
  html { scroll-padding-top: 104px; }
}
@media (max-width: 575.98px) {
  .category-hero { padding-top: 3.2rem; }
  .hero-actions .btn { width: 100%; }
  .step-flow { grid-template-columns: 1fr; }
  .timeline-dot { width: 44px; height: 44px; flex-basis: 44px; font-size: .95rem; }
  .timeline-line { left: 21px; }
  .channel-list .channel-item { flex-wrap: wrap; }
  .featured-main-card .featured-body, .feature-card .feature-card-body { padding: 1.5rem; }
  .footer .row { row-gap: 2rem; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .featured-main-card { transition: none; }
  .showcase-card:hover .showcase-media img { transform: none; }
}

/* roulang page: category2 */
:root{
  --clr-primary:#4A7FB5;
  --clr-primary-deep:#2C5F8A;
  --clr-primary-soft:#EAF1F7;
  --clr-accent:#E8893B;
  --clr-accent-deep:#C96820;
  --clr-bg:#F5F8FB;
  --clr-card:#FFFFFF;
  --clr-border:#DCE4EC;
  --clr-heading:#1C3246;
  --clr-text:#33475C;
  --clr-weak:#5E728A;
  --clr-muted:#84909C;
  --clr-footer:#12283C;
  --clr-star:#D9E5EF;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:9px;
  --shadow-main:0 8px 24px rgba(25,45,70,.06);
  --shadow-hover:0 12px 32px rgba(25,45,70,.11);
  --focus-ring:0 0 0 4px rgba(44,95,138,.18);
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --num-font:"SF Mono",SFMono-Regular,ui-monospace,"Cascadia Code",Consolas,monospace;
}
html,body{overflow-x:hidden;}
body{
  background:var(--clr-bg);
  color:var(--clr-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
*,*::before,*::after{box-sizing:border-box;}
h1,h2,h3,h4,h5,h6{
  color:var(--clr-heading);
  font-weight:700;
  line-height:1.28;
  margin:0;
}
a{color:var(--clr-primary-deep);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:#1d496e;}
a:focus-visible,.btn:focus-visible,.form-control:focus-visible{
  outline:2px solid rgba(42,95,138,.5);
  outline-offset:2px;
}
img{max-width:100%;height:auto;}
.container{max-width:1200px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  color:var(--clr-primary-deep);
  font-weight:600;
  font-size:.875rem;
  letter-spacing:.02em;
  background:rgba(74,127,181,.1);
  border:1px solid rgba(74,127,181,.14);
  padding:.38rem .85rem;
  border-radius:999px;
  margin-bottom:1.25rem;
}
.eyebrow i{color:var(--clr-accent);}
.section-pad{padding:clamp(4rem,10vh,7rem) 0;}
.section-header{
  max-width:760px;
  margin-bottom:2.6rem;
}
.section-tag{
  display:inline-block;
  color:var(--clr-primary-deep);
  font-size:.8rem;
  font-weight:600;
  letter-spacing:.12em;
  margin-bottom:.6rem;
  text-transform:uppercase;
}
.section-header h2{
  font-size:clamp(1.85rem,3.2vw,2.5rem);
  letter-spacing:-.02em;
  margin-bottom:.7rem;
}
.section-header p:last-child{margin-bottom:0;}
.text-lead{font-size:1.05rem;color:var(--clr-weak);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  border-radius:var(--radius-sm);
  border-width:1px;
  border-style:solid;
  font-weight:600;
  letter-spacing:.01em;
  padding:.7rem 1.35rem;
  font-size:.96rem;
  transition:all .2s ease;
}
.btn-sm{
  padding:.45rem .95rem;
  font-size:.86rem;
}
.btn-action{
  background:var(--clr-accent);
  border-color:var(--clr-accent);
  color:#fff;
}
.btn-action:hover{
  background:var(--clr-accent-deep);
  border-color:var(--clr-accent-deep);
  color:#fff;
  box-shadow:0 8px 20px rgba(232,137,59,.25);
  transform:translateY(-1px);
}
.btn-action:active{
  transform:scale(.99);
  box-shadow:none;
}
.btn-outline-main{
  background:transparent;
  color:var(--clr-primary-deep);
  border:1px solid rgba(44,95,138,.35);
}
.btn-outline-main:hover{
  background:var(--clr-primary-soft);
  border-color:var(--clr-primary-deep);
  color:var(--clr-primary-deep);
  transform:translateY(-1px);
}
.btn-outline-main:active{
  transform:scale(.99);
}
.btn-white-outline{
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,.45);
}
.btn-white-outline:hover{
  border-color:#fff;
  color:#fff;
  background:rgba(255,255,255,.08);
}
.btn-white-fill{
  background:#fff;
  color:var(--clr-primary-deep);
  border-color:#fff;
}
.btn-white-fill:hover{
  background:var(--clr-bg);
  color:var(--clr-primary-deep);
  border-color:#fff;
}
.btn{vertical-align:middle;}
.btn:active{transform:scale(.99);}

.site-header{
  position:relative;
  background:rgba(245,248,251,.96);
  border-bottom:1px solid var(--clr-border);
  backdrop-filter:blur(10px);
  z-index:1040;
}
.site-header.scrolled{
  position:sticky;
  top:0;
  background:rgba(255,255,255,.96);
  box-shadow:0 4px 18px rgba(25,45,70,.06);
}
.site-title{
  color:var(--clr-heading);
  font-size:1.18rem;
  font-weight:700;
  letter-spacing:-.01em;
}
.logo-cn{color:var(--clr-primary-deep);}
.logo-cn .brand-dot{
  background:var(--clr-accent);
  color:#fff;
  border-radius:5px;
  padding:0 .28em;
  font-size:.76rem;
  font-weight:800;
  margin:0 .14em;
  display:inline-block;
  transform:translateY(-1px);
}
.site-header .search-form{
  width:250px;
}
.site-header .search-form .form-control{
  background:#fff;
  border:1px solid var(--clr-border);
  border-right:0;
  border-radius:var(--radius-sm) 0 0 var(--radius-sm);
  font-size:.9rem;
  padding:.45rem .95rem;
  color:var(--clr-text);
}
.site-header .search-form .form-control:focus{
  border-color:var(--clr-primary);
  box-shadow:none;
  background:#fff;
}
.site-header .search-form .btn{
  border:1px solid var(--clr-border);
  border-left:0;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--clr-primary-deep);
  background:var(--clr-primary-soft);
  padding:.45rem .8rem;
}
.site-header .search-form .btn:hover{
  background:var(--clr-primary);
  color:#fff;
  border-color:var(--clr-primary);
}
.navbar-mega{
  border-top:1px solid rgba(220,228,236,.8);
  background:rgba(255,255,255,.52);
  padding:0;
}
.navbar-mega .nav-link{
  color:var(--clr-heading);
  font-size:.93rem;
  font-weight:600;
  padding:.62rem .8rem;
  line-height:1.4;
  position:relative;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.navbar-mega .nav-link::after{
  content:"";
  position:absolute;
  left:.8rem;
  right:.8rem;
  bottom:.08rem;
  height:3px;
  border-radius:3px;
  background:transparent;
  transition:background .2s ease;
}
.navbar-mega .nav-link:hover{
  color:var(--clr-primary-deep);
  background:rgba(74,127,181,.05);
}
.navbar-mega .nav-link:focus-visible{
  outline-offset:-3px;
}
.navbar-mega .nav-link.active{
  color:var(--clr-primary-deep);
}
.navbar-mega .nav-link.active::after{
  background:var(--clr-primary-deep);
}
.category-nav{
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  flex-wrap:nowrap;
}
.category-nav::-webkit-scrollbar{display:none;}
.channel-label{
  color:var(--clr-weak);
  font-weight:600;
  font-size:.82rem;
}
.mobile-trigger{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:10px;
  font-size:1rem;
  background:#fff;
  border:1px solid var(--clr-border);
  color:var(--clr-heading);
}

.category-hero{
  position:relative;
  background:linear-gradient(180deg,#EEF4F9 0%,var(--clr-bg) 100%);
  border-bottom:1px solid var(--clr-border);
  padding:clamp(3.4rem,8vh,6rem) 0 clamp(3rem,7vh,5.5rem);
  overflow:hidden;
}
.category-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  opacity:.07;
  pointer-events:none;
}
.category-hero .container{
  position:relative;
  z-index:1;
}
.hero-breadcrumb{
  font-size:.84rem;
  color:var(--clr-weak);
  margin-bottom:1.35rem;
}
.hero-breadcrumb a{color:var(--clr-weak);}
.hero-breadcrumb a:hover{color:var(--clr-primary-deep);}
.hero-breadcrumb .divider{color:var(--clr-border);margin:0 .55rem;font-style:normal;}
.category-hero h1{
  font-size:clamp(2.5rem,5.2vw,3.6rem);
  font-weight:800;
  letter-spacing:-.035em;
  margin-bottom:1rem;
}
.category-hero .hero-desc{
  font-size:1.1rem;
  line-height:1.9;
  color:var(--clr-weak);
  max-width:680px;
  margin-bottom:1.8rem;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:.8rem;
}
.hero-media{
  border-radius:22px;
  box-shadow:var(--shadow-hover);
  border:1px solid #fff;
  background:var(--clr-primary-soft);
  padding:.55rem;
}
.hero-media img{
  border-radius:17px;
  width:100%;
  height:auto;
  object-fit:cover;
  aspect-ratio:4/3;
}
.hero-scroll-dot{
  margin-top:2rem;
  color:var(--clr-muted);
  font-size:.8rem;
  letter-spacing:.18em;
  display:inline-flex;
  align-items:center;
  gap:.4rem;
}
.hero-scroll-dot::before{
  content:"";
  width:26px;
  height:2px;
  background:var(--clr-accent);
  border-radius:2px;
}

.proof-strip{
  background:#fff;
  border-bottom:1px solid var(--clr-border);
}
.proof-strip .proof-inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:.5rem;
}
.proof-item{
  padding:.95rem .7rem;
  display:flex;
  align-items:center;
  gap:.8rem;
  border-left:1px solid var(--clr-border);
}
.proof-item:first-child{border-left:0;}
.proof-icon{
  flex:0 0 36px;
  height:36px;
  border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--clr-primary-soft);
  color:var(--clr-primary-deep);
  font-size:.95rem;
}
.proof-item span{
  font-size:.88rem;
  color:var(--clr-heading);
  font-weight:700;
  white-space:nowrap;
}
.proof-item small{
  display:block;
  font-size:.78rem;
  color:var(--clr-muted);
  font-weight:500;
  white-space:nowrap;
}

.guide-scope{
  background:var(--clr-bg);
  padding:clamp(4rem,10vh,7rem) 0 clamp(3.5rem,8vh,5.5rem);
}
.scope-card{
  background:var(--clr-card);
  border:1px solid var(--clr-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-main);
  padding:2rem 1.9rem;
  height:100%;
  transition:box-shadow .25s ease,transform .25s ease;
}
@media (hover:hover){
  .scope-card:hover{
    box-shadow:var(--shadow-hover);
    transform:translateY(-2px);
  }
}
.scope-card .icon-tag{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  background:var(--clr-primary-soft);
  border-radius:13px;
  color:var(--clr-primary-deep);
  font-size:1.15rem;
  margin-bottom:1rem;
}
.scope-card h3{
  font-size:1.35rem;
  margin-bottom:.65rem;
  letter-spacing:-.01em;
}
.scope-card p{
  color:var(--clr-weak);
  font-size:.95rem;
  margin-bottom:1rem;
}
.feature-list{
  list-style:none;
  margin:0;
  padding:0;
}
.feature-list li{
  position:relative;
  padding-left:1.6rem;
  color:var(--clr-text);
  font-size:.92rem;
  line-height:1.7;
  margin-bottom:.55rem;
}
.feature-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.47rem;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--clr-accent);
  box-shadow:0 0 0 3px rgba(232,137,59,.14);
}
.scope-card .minor-link{
  margin-top:1rem;
  display:inline-block;
  font-size:.9rem;
  font-weight:700;
  color:var(--clr-primary-deep);
  border-bottom:1px solid rgba(44,95,138,.25);
  padding-bottom:1px;
}
.scope-card .minor-link:hover{
  color:var(--clr-accent-deep);
  border-color:rgba(232,137,59,.4);
}
.scope-divider{
  height:4px;
  width:64px;
  border-radius:4px;
  background:var(--clr-accent);
  margin:.4rem 0 1.1rem;
}

.guide-directory{
  background:#fff;
  padding:clamp(4rem,10vh,7rem) 0;
  border-top:1px solid var(--clr-border);
  border-bottom:1px solid var(--clr-border);
}
.directory-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1.35rem;
}
.directory-card{
  background:#fff;
  border:1px solid var(--clr-border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-main);
  height:100%;
  transition:transform .25s ease,box-shadow .25s ease;
}
@media (hover:hover){
  .directory-card:hover{
    transform:translateY(-3px);
    box-shadow:var(--shadow-hover);
  }
}
.directory-card .cover-box{
  width:100%;
  aspect-ratio:16/10;
  overflow:hidden;
  position:relative;
  background:var(--clr-primary-soft);
}
.directory-card .cover-box img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.directory-card:hover .cover-box img{
  transform:scale(1.04);
}
.directory-card .card-txt{
  padding:1.1rem 1.25rem 1.35rem;
}
.directory-card .badge-mini{
  display:inline-block;
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--clr-primary-deep);
  background:var(--clr-primary-soft);
  padding:.2rem .6rem;
  border-radius:4px;
  margin-bottom:.6rem;
}
.directory-card h3{
  font-size:1.08rem;
  margin-bottom:.35rem;
}
.directory-card p{
  font-size:.84rem;
  color:var(--clr-weak);
  line-height:1.65;
  margin-bottom:0;
}
.tag-cloud{
  margin-top:2.2rem;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.6rem;
}
.tag-cloud .label-mini{
  color:var(--clr-muted);
  font-size:.85rem;
  font-weight:600;
  margin-right:.3rem;
}
.tag-cloud .topic-note{
  color:var(--clr-heading);
  font-size:.82rem;
  font-weight:600;
  background:var(--clr-bg);
  border:1px solid var(--clr-border);
  padding:.38rem .85rem;
  border-radius:999px;
  line-height:1.2;
}
.tag-cloud .topic-note i{
  margin-right:.25rem;
  color:var(--clr-accent);
}

.guide-process{
  background:var(--clr-bg);
  padding:clamp(4rem,10vh,7rem) 0;
}
.step-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1.2rem;
  counter-reset:step;
}
.step-item{
  counter-increment:step;
  background:#fff;
  border-radius:var(--radius-lg);
  border:1px solid var(--clr-border);
  padding:1.8rem 1.4rem 1.6rem;
  position:relative;
  box-shadow:var(--shadow-main);
  height:100%;
  transition:box-shadow .25s ease;
}
@media (hover:hover){
  .step-item:hover{
    box-shadow:var(--shadow-hover);
  }
}
.step-item::before{
  counter-reset:step;
  content:counter(step,decimal-leading-zero);
  font-family:var(--num-font);
  font-size:.9rem;
  font-weight:800;
  color:var(--clr-accent);
  letter-spacing:.06em;
  background:rgba(232,137,59,.1);
  padding:.2rem .6rem;
  border-radius:6px;
  display:inline-block;
  margin-bottom:1rem;
}
.step-item h3{
  font-size:1.05rem;
  margin-bottom:.4rem;
}
.step-item p{
  font-size:.88rem;
  color:var(--clr-weak);
  margin-bottom:0;
  line-height:1.75;
}
.step-line{
  margin-top:2rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  flex-wrap:wrap;
  color:var(--clr-muted);
  font-size:.9rem;
}
.step-line .line-anchor{
  background:#fff;
  border:1px solid var(--clr-border);
  padding:.45rem .95rem;
  border-radius:999px;
  color:var(--clr-primary-deep);
  font-size:.85rem;
  font-weight:600;
}
.step-line .line-anchor:hover{
  border-color:var(--clr-primary-deep);
  background:var(--clr-primary-soft);
}

.guide-note{
  background:linear-gradient(120deg,#1D3D57 0%,#12283C 100%);
  padding:clamp(4rem,10vh,6.5rem) 0;
  color:#D8E2EB;
}
.guide-note h2{
  color:#fff;
  font-size:clamp(1.85rem,3.2vw,2.5rem);
}
.guide-note .eyebrow{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.15);
  color:#fff;
}
.guide-note .eyebrow i{color:#F0A868;}
.note-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:2.4rem;
  align-items:center;
}
.note-quote{
  border-left:3px solid var(--clr-accent);
  padding:.3rem 0 .3rem 1.4rem;
  color:#C7D6E3;
  font-size:1.02rem;
  line-height:1.9;
}
.guide-note p:last-child{margin-bottom:0;}

.faq-section{
  background:#fff;
  padding:clamp(4rem,10vh,7rem) 0;
  border-bottom:1px solid var(--clr-border);
}
.faq-wrap{
  max-width:880px;
  margin:0 auto;
}
.accordion.custom-accordion{
  --bs-accordion-border-width:0;
  --bs-accordion-bg:transparent;
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-btn-focus-box-shadow:none;
  border-top:1px solid var(--clr-border);
}
.custom-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--clr-border);
  border-radius:0 !important;
}
.custom-item .accordion-button{
  font-size:1rem;
  font-weight:700;
  color:var(--clr-heading);
  padding:1.2rem .5rem 1.2rem 0;
  background:transparent;
  border:0;
  box-shadow:none;
  gap:.6rem;
}
.custom-item .accordion-button:not(.collapsed){
  color:var(--clr-primary-deep);
  background:transparent;
  box-shadow:none;
}
.custom-item .accordion-button:focus{
  outline:2px solid rgba(44,95,138,.4);
  outline-offset:0;
}
.custom-item .accordion-button::after{
  flex-shrink:0;
  width:28px;
  height:28px;
  background-image:none;
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  content:"\f067";
  font-size:.8rem;
  border-radius:8px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background-color:var(--clr-primary-soft);
  color:var(--clr-primary-deep);
  transition:transform .25s ease,background-color .25s ease,color .25s ease;
  transform:none;
}
.custom-item .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  background-color:var(--clr-primary-deep);
  color:#fff;
}
.custom-item .accordion-body{
  color:var(--clr-weak);
  font-size:.95rem;
  line-height:1.85;
  padding:.4rem 2.6rem 1.4rem 0;
}
.cta-panel{
  background:var(--clr-bg);
  padding:clamp(3.5rem,8vh,5rem) 0;
  border-bottom:1px solid var(--clr-border);
}
.cta-inner{
  background:#fff;
  border:1px solid var(--clr-border);
  border-radius:24px;
  box-shadow:var(--shadow-main);
  padding:clamp(2rem,5vw,3.5rem);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:2rem;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:clamp(1.6rem,2.8vw,2.2rem);
  margin-bottom:.4rem;
}
.cta-inner p{
  color:var(--clr-weak);
  margin-bottom:0;
  font-size:1rem;
}
.cta-actions{
  display:flex;
  gap:.8rem;
  flex-wrap:wrap;
}

.footer{
  background:#142B3F;
  color:#AEB7C0;
}
.footer hr{
  border-color:rgba(255,255,255,.1);
  opacity:1;
  margin:1.5rem 0;
}
.footer .brand-footer{
  color:#fff;
}
.footer h6{
  color:#E6EDF3;
  font-size:.95rem;
  margin-bottom:.8rem;
  font-weight:700;
}
.footer a{
  color:#AEB7C0;
  transition:color .2s ease;
}
.footer a:hover{
  color:#fff;
}
.link-list a{
  display:inline-block;
  padding:.24rem 0;
}
.link-list a:hover{
  transform:translateX(2px);
}
.footer .text-white-50 a{color:rgba(255,255,255,.52);}
.footer .text-white-50 a:hover{color:#fff;}

@media (max-width:991.98px){
  .category-nav .nav-link{
    padding:.55rem .65rem;
    font-size:.9rem;
  }
  .proof-strip .proof-inner{
    grid-template-columns:repeat(2,1fr);
  }
  .proof-item:nth-child(3){border-left:0;border-top:1px solid var(--clr-border);}
  .proof-item:nth-child(4){border-top:1px solid var(--clr-border);}
  .directory-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .step-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media (max-width:767.98px){
  .category-hero{
    padding-top:2.8rem;
  }
  .hero-actions .btn{
    flex:1 1 100%;
  }
  .note-layout{
    grid-template-columns:1fr;
    gap:1.6rem;
  }
  .cta-inner{
    align-items:flex-start;
    flex-direction:column;
  }
}
@media (max-width:575.98px){
  h1{font-size:2rem !important;}
  .section-header h2{
    font-size:1.75rem;
  }
  .proof-strip .proof-inner{
    grid-template-columns:1fr;
  }
  .proof-item{
    border-left:0 !important;
    border-bottom:1px solid var(--clr-border);
    padding:.8rem .2rem;
  }
  .proof-item:last-child{border-bottom:0;}
  .directory-grid{
    grid-template-columns:1fr;
  }
  .step-grid{
    grid-template-columns:1fr;
  }
}
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category4 */
:root {
  --clr-main-dark: #2C5F8A;
  --clr-main: #4A7FB5;
  --clr-main-light: #EAF1F7;
  --clr-accent: #D9942F;
  --clr-accent-dark: #C07A1E;
  --clr-bg: #F5F8FB;
  --clr-surface: #FFFFFF;
  --clr-text: #213244;
  --clr-muted: #667785;
  --clr-soft: #8495A3;
  --clr-border: #DCE4EC;
  --clr-line: #E4EAF0;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow-card: 0 8px 24px rgba(25,45,70,.06);
  --shadow-hover: 0 14px 30px rgba(25,45,70,.10);
  --container-w: 1200px;
  --section-y: clamp(4rem, 9vh, 6rem);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "sans-serif";
  background: var(--clr-surface);
  color: var(--clr-text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--clr-main-dark); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--clr-main); }
img { max-width: 100%; display: block; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; margin-bottom: .5rem; }
p { margin-bottom: 1rem; }
ul, ol { padding-left: 1rem; }
.container { max-width: var(--container-w); }
.section-space { padding-top: var(--section-y); padding-bottom: var(--section-y); }
.section-title { font-size: clamp(1.8rem, 3vw, 2.4rem); color: var(--clr-text); letter-spacing: -0.02em; }
.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .875rem; font-weight: 600; color: var(--clr-main-dark);
  background: rgba(74,127,181,.10); border-radius: 999px;
  padding: .35rem .85rem; margin-bottom: 1rem; letter-spacing:.02em;
}
.eyebrow i { color: var(--clr-accent); }
.lead-text { font-size: 1.06rem; color: var(--clr-muted); max-width: 640px; }
.section-intro { max-width: 760px; margin-bottom: 2.5rem; }
.text-soft { color: var(--clr-muted); }

a:focus-visible, button:focus-visible, .accordion-button:focus {
  outline: 2px solid rgba(42,95,138,.45);
  outline-offset: 2px;
  box-shadow: none;
}

/* ===== Header + Nav ===== */
.site-header { position: sticky; top: 0; z-index: 1030; background: #fff; border-bottom: 1px solid var(--clr-line); box-shadow: 0 2px 12px rgba(20,35,50,.04); }
.site-header .topbar { min-height: 54px; }
.site-title { font-size: 1.35rem; font-weight: 800; letter-spacing: -.01em; line-height: 1.2; color: var(--clr-text); }
.logo-cn { color: var(--clr-text); }
.brand-dot { color: var(--clr-accent); margin: 0 .05rem; }
.search-form { width: 320px; max-width: 100%; border-radius: 999px; overflow: hidden; background: var(--clr-bg); border: 1px solid var(--clr-border); }
.search-form .form-control { border: 0; background: transparent; font-size: .9rem; padding: .5rem 1rem; color: var(--clr-text); box-shadow: none; }
.search-form .form-control::placeholder { color: #9EABB5; }
.search-form .btn { background: transparent; border: 0; color: var(--clr-main-dark); padding: 0 1rem; font-size: .95rem; }
.navbar-mega { background: #fff; border-top: 1px solid #F0F3F6; }
.category-nav { gap: .2rem; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none; }
.category-nav::-webkit-scrollbar { display: none; }
.category-nav .nav-link {
  color: #4D5E6E; font-size: .93rem; font-weight: 500;
  padding: .55rem .82rem; white-space: nowrap; border-radius: 999px;
  transition: background .2s ease, color .2s ease;
}
.category-nav .nav-link:hover { color: var(--clr-main-dark); background: var(--clr-bg); }
.category-nav .nav-link.active { background: var(--clr-main-light); color: var(--clr-main-dark); font-weight: 600; }
.navbar-mega .channel-label { color: var(--clr-soft); font-size: .85rem; }
.btn-outline-main {
  border: 1px solid var(--clr-main-dark); color: var(--clr-main-dark);
  background: transparent; border-radius: 999px; font-weight: 600;
  padding: .42rem 1.05rem; font-size: .9rem;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .1s ease;
}
.btn-outline-main:hover { background: var(--clr-main-dark); color: #fff; border-color: var(--clr-main-dark); }
.btn-outline-main:active { transform: scale(.98); }
.btn-action {
  background: var(--clr-accent); border: 1px solid var(--clr-accent); color: #fff;
  border-radius: 10px; font-weight: 600; padding: .75rem 1.6rem; font-size: 1rem;
  transition: box-shadow .2s ease, background .2s ease, color .2s ease, transform .1s ease;
  box-shadow: 0 6px 18px rgba(217,148,47,.20);
}
.btn-action:hover { background: var(--clr-accent-dark); border-color: var(--clr-accent-dark); color: #fff; box-shadow: 0 10px 24px rgba(217,148,47,.30); }
.btn-action:active { transform: scale(.99); }
.btn-ghost-light {
  border: 1px solid #FFFFFF; color: #FFFFFF; background: transparent;
  border-radius: 10px; padding: .72rem 1.5rem; font-weight: 600;
  transition: background .2s ease, color .2s ease;
}
.btn-ghost-light:hover { background: #fff; color: var(--clr-main-dark); }

/* ===== 分类页 Hero ===== */
.platform-hero {
  background: linear-gradient(180deg, #EEF3F8 0%, #FFFFFF 78%);
  padding: clamp(3rem, 6vw, 5rem) 0 3rem;
  border-bottom: 1px solid var(--clr-line);
  overflow: hidden;
}
.platform-hero .hero-content { padding: 1.2rem 0; }
.platform-hero h1 { font-size: clamp(2.6rem, 5.2vw, 3.6rem); font-weight: 800; letter-spacing: -.035em; margin-bottom: 1rem; }
.hero-desc { font-size: 1.1rem; line-height: 1.85; color: var(--clr-muted); max-width: 620px; margin-bottom: 1.8rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; }
.hero-figure { border-radius: var(--radius-lg); overflow: hidden; box-shadow: 0 18px 44px rgba(25,45,70,.14); transform: rotate(.4deg); border: 5px solid #fff; }
.hero-figure img { width: 100%; height: 100%; object-fit: cover; min-height: 300px; max-height: 430px; }
.hero-foot { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 1.5rem; color: var(--clr-soft); font-size: .9rem; }

/* ===== 信源徽章条 ===== */
.source-bar { background: #fff; border-bottom: 1px solid var(--clr-line); }
.source-inner { border-left: 1px solid var(--clr-line); border-right: 1px solid var(--clr-line); }
.source-item { display: flex; align-items: flex-start; gap: .85rem; padding: 1.2rem 1.5rem; border-right: 1px solid var(--clr-line); min-height: 78px; }
.source-item:last-child { border-right: 0; }
.source-icon {
  width: 40px; height: 40px; border-radius: 10px; flex: 0 0 40px;
  background: #F1F6FA; color: var(--clr-main); border: 1px solid var(--clr-border);
  display: inline-flex; align-items: center; justify-content: center; font-size: 1.05rem;
}
.source-num { font-size: 1.45rem; font-weight: 800; color: var(--clr-text); line-height: 1.1; font-variant-numeric: tabular-nums; }
.source-num small { font-size: .95rem; font-weight: 600; margin-left: .15rem; color: var(--clr-main-dark); }
.source-item p { margin: 0; color: var(--clr-soft); font-size: .85rem; line-height: 1.4; }

/* ===== 卡片基础 ===== */
.module-card {
  background: var(--clr-surface); border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg); padding: 1.5rem; height: 100%;
  box-shadow: var(--shadow-card); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.module-card:hover {
  transform: translateY(-2px); box-shadow: var(--shadow-hover);
  border-color: #C9D6E2;
}
.module-card .card-icon {
  width: 44px; height: 44px; border-radius: 12px; background: var(--clr-main-light);
  color: var(--clr-main-dark); display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.15rem; margin-bottom: 1rem;
}
.module-card h3 { font-size: 1.2rem; font-weight: 700; }
.module-card p { color: var(--clr-muted); font-size: .95rem; margin-bottom: .6rem; }
.module-list { list-style: none; padding-left: 0; margin: 1rem 0 0; }
.module-list li { position: relative; padding-left: 1.4rem; margin-bottom: .55rem; color: #4E5F6E; font-size: .95rem; }
.module-list li::before { content: "\f00c"; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: .75rem; color: var(--clr-accent); position: absolute; left: 0; top: .28rem; }

.service-module-wrap .big-module {
  background: linear-gradient(135deg, #F7FAFD 0%, #EFF4F9 100%);
  border-color: #C6D5E2; display: flex; flex-direction: column; justify-content: space-between;
}
.big-module h3 { font-size: 1.45rem; }
.big-module .module-note { color: var(--clr-muted); }
.slot-card { background: #fff; border: 1px solid var(--clr-border); border-radius: var(--radius-md); padding: 1.25rem; height: 100%; transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
.slot-card:hover { border-color: #BECEDD; box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.slot-card .slot-head { display: flex; align-items: center; gap: .65rem; margin-bottom: .8rem; }
.slot-card .slot-head i { width: 34px; height: 34px; border-radius: 9px; background: var(--clr-main-light); color: var(--clr-main-dark); display: inline-flex; align-items: center; justify-content: center; font-size: .9rem; }
.slot-card h3 { font-size: 1.02rem; margin: 0; font-weight: 700; }
.slot-card p { color: var(--clr-muted); font-size: .88rem; margin: 0; }

/* ===== 场景 / 适用模块 ===== */
.scene-media-frame { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); background: #EAF0F5; }
.scene-media-frame img { width: 100%; height: 100%; min-height: 280px; object-fit: cover; }
.scene-card {
  border-left: 3px solid var(--clr-accent); background: #fff;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-card); padding: 1.3rem 1.4rem; margin-bottom: 1rem;
}
.scene-card:last-child { margin-bottom: 0; }
.scene-card h3 { font-size: 1.05rem; display: flex; align-items: center; gap: .55rem; margin-bottom: .3rem; }
.scene-card h3 i { color: var(--clr-main); font-size: .95rem; width: 1.4rem; text-align: center; }
.scene-card p { color: var(--clr-muted); font-size: .92rem; margin: 0; }

/* ===== 流程 ===== */
.process-wrap { background: var(--clr-bg); border-top: 1px solid var(--clr-line); border-bottom: 1px solid var(--clr-line); }
.process-step { position: relative; height: 100%; }
.process-inner { background: #fff; border: 1px solid var(--clr-border); border-radius: var(--radius-lg); padding: 1.6rem; height: 100%; box-shadow: var(--shadow-card); }
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 11px;
  background: var(--clr-main-dark); color: #fff; font-weight: 800; font-size: 1rem;
  margin-bottom: 1rem; font-variant-numeric: tabular-nums;
}
.process-step h3 { font-size: 1.1rem; margin-bottom: .5rem; }
.process-step p { color: var(--clr-muted); font-size: .92rem; margin: 0; }
.process-arrow { position: absolute; right: -22px; top: 50%; transform: translateY(-50%); color: #B8C6D3; font-size: 1.1rem; z-index: 2; }

/* ===== 服务内容展示 ===== */
.content-showcase { background: #fff; }
.showcase-list li { color: #4E5F6E; font-size: .98rem; padding: .7rem 0 .7rem 2rem; position: relative; border-bottom: 1px dashed var(--clr-line); }
.showcase-list li:last-child { border-bottom: 0; }
.showcase-list li::before { content: "\f02d"; font-family: "Font Awesome 6 Free"; font-weight: 900; color: var(--clr-main); position: absolute; left: .2rem; top: .8rem; font-size: .8rem; }
.showcase-list li strong { color: var(--clr-text); }
.info-panel { background: var(--clr-bg); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); padding: 1.5rem; margin-top: 1.5rem; }
.info-panel p { margin: 0; }

/* ===== FAQ ===== */
.faq-section { background: #fff; }
.faq-wrap .accordion-button {
  background: transparent; color: var(--clr-text);
  font-size: 1rem; font-weight: 700; padding: 1.15rem 1rem 1.15rem 1.25rem;
  border-bottom: 1px solid transparent;
}
.faq-wrap .accordion-button::after {
  width: 1rem; height: 1rem; background-size: 1rem;
  filter: grayscale(1) brightness(.6);
}
.faq-wrap .accordion-item { border: 0; border-bottom: 1px solid #E3EAF1; background: transparent; }
.faq-wrap .accordion-item:last-child { border-bottom: 0; }
.faq-wrap .accordion-button:not(.collapsed) {
  background: #F7FAFD; color: var(--clr-main-dark);
  border-left: 3px solid var(--clr-main); border-radius: 0;
  box-shadow: none;
}
.faq-wrap .accordion-body { padding: .4rem 1.4rem 1.4rem 1.4rem; color: var(--clr-muted); font-size: .98rem; line-height: 1.85; }

/* ===== CTA ===== */
.service-cta-band { border-radius: 24px; overflow: hidden; color: #fff; background-size: cover; background-position: center; background-color: #26384C; position: relative; padding: clamp(2.8rem, 6vw, 5rem); }
.service-cta-band::before { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(21,41,58,.92) 0%, rgba(21,41,58,.72) 70%, rgba(21,41,58,.38) 100%); }
.service-cta-inner { position: relative; z-index: 1; }
.service-cta-inner h2 { font-size: clamp(1.7rem, 3vw, 2.6rem); color: #fff; }
.service-cta-inner p { color: rgba(255,255,255,.86); max-width: 640px; font-size: 1.02rem; }
.cta-link-icon { color: rgba(255,255,255,.9); border: 1px solid rgba(255,255,255,.5); border-radius: 10px; background: rgba(255,255,255,.1); }
.cta-link-icon:hover { background: #fff; color: var(--clr-main-dark); }

/* ===== Footer ===== */
.footer { background: #1D2A37; color: #B7C0C9; }
.footer h6 { color: #fff; font-weight: 700; font-size: 1rem; letter-spacing:.03em; }
.link-list a { color: #B7C0C9; transition: color .2s ease, padding-left .2s ease; }
.link-list a:hover { color: #fff; padding-left: 3px; }
.footer hr { border-color: rgba(255,255,255,.10); margin: 1.5rem 0; }
.brand-footer { font-size: 1.2rem; }

/* ===== 移动端菜单 ===== */
.offcanvas { background: #fff; }
.offcanvas .category-nav { flex-direction: column; overflow: visible; align-items: flex-start; gap: .2rem; }
.offcanvas .category-nav .nav-link { width: 100%; border-radius: 9px; }

/* ===== 响应式 ===== */
@media (max-width: 1199.98px) {
  .source-item { padding: 1.2rem 1rem; }
  .process-arrow { display: none; }
}
@media (max-width: 991.98px) {
  .navbar-mega { overflow: hidden; }
  .category-nav { gap: 0; }
  .source-inner { border-left: 0; border-right: 0; }
  .source-item { border-right: 0; border-bottom: 1px solid var(--clr-line); }
  .source-item:last-child { border-bottom: 0; }
  .hero-figure { margin-top: 1rem; }
  .footer .row { row-gap: 1.4rem; }
}
@media (max-width: 767.98px) {
  body { font-size: 15px; }
  .platform-hero h1 { font-size: 2rem; letter-spacing: -.02em; }
  .hero-actions .btn-action, .hero-actions .btn-ghost-light { width: 100%; justify-content: center; }
  .hero-desc { font-size: 1rem; }
  .module-card { padding: 1.25rem; }
  .service-cta-band { border-radius: 18px; padding: 2.2rem 1.5rem; }
  .source-item { padding: 1rem .75rem; }
  .section-title { font-size: 1.8rem; }
  .category-nav .nav-link { font-size: .9rem; }
  .footer .brand-footer { font-size: 1.1rem; }
}
@media (max-width: 575.98px) {
  .site-title { font-size: 1.15rem; }
  .topbar .container { padding-left: 16px; padding-right: 16px; }
  .navbar-mega .container { padding-left: 12px; padding-right: 12px; }
  .platform-hero { padding-top: 2.5rem; }
  .platform-hero .hero-content { padding-top: 0; }
  .source-item p { font-size: .82rem; }
  .source-num { font-size: 1.25rem; }
  .offcanvas .category-nav .nav-link { font-size: 1rem; }
}
@media (hover: hover) {
  .module-card, .slot-card, .scene-card { transition-timing-function: cubic-bezier(.2,.7,.3,1); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}