/* roulang page: index */
:root{
      --navy:#142944;
      --blue:#2468d8;
      --cyan:#22a8c7;
      --yellow:#ffd166;
      --ink:#172538;
      --muted:#6d7c8e;
      --line:#dfe8f1;
      --paper:#ffffff;
      --wash:#f4f8fc;
      --soft:#eaf3ff;
      --shadow:0 18px 44px rgba(28,64,103,.10);
      --shadow-sm:0 8px 24px rgba(28,64,103,.08);
      --radius:18px;
      --max:1180px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--paper);color:var(--ink);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{display:block;width:100%;object-fit:cover}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
    .eyebrow:before{content:"";width:24px;height:3px;border-radius:3px;background:var(--yellow)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:30px}
    .section-head h2{font-size:clamp(25px,3vw,38px);line-height:1.25;letter-spacing:0;font-weight:800}
    .section-head p{max-width:575px;color:var(--muted);font-size:15px}
    .section{padding:92px 0}
    .section.alt{background:var(--wash)}
    .section.dark{background:var(--navy);color:#fff}
    .topbar{height:76px;display:flex;align-items:center;border-bottom:1px solid rgba(223,232,241,.75);background:rgba(255,255,255,.94);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:900;box-shadow:0 7px 16px rgba(36,104,216,.25)}
    .brand-name{font-size:16px;font-weight:900;color:var(--navy);letter-spacing:0}
    .nav-links{display:flex;align-items:center;gap:4px}
    .nav-links a{padding:9px 13px;color:#52667c;font-weight:700;border-radius:10px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{background:var(--soft);color:var(--blue)}
    .nav-cta{padding:11px 18px!important;background:var(--navy)!important;color:#fff!important;border-radius:11px!important}
    .menu-toggle{display:none;background:var(--soft);color:var(--navy);width:40px;height:40px;border-radius:10px;font-size:21px}
    .hero{position:relative;min-height:640px;display:flex;align-items:center;overflow:hidden;background:var(--navy)}
    .hero-media{position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,41,68,.96) 10%,rgba(20,41,68,.76) 49%,rgba(20,41,68,.34)),url("https://images.unsplash.com/photo-1489599849927-2ee91cede3ba?auto=format&fit=crop&w=1800&q=88") center/cover}
    .hero-inner{position:relative;z-index:1;padding:92px 0 110px;color:#fff}
    .hero-copy{max-width:720px}
    .hero .eyebrow{color:#b9e9f2}
    .hero h1{font-size:clamp(37px,5.5vw,68px);line-height:1.12;letter-spacing:0;font-weight:900;margin:20px 0 22px}
    .hero h1 em{font-style:normal;color:var(--yellow)}
    .hero-lead{font-size:18px;line-height:1.9;color:#e5edf6;max-width:700px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin-top:34px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 21px;border-radius:11px;font-weight:800;transition:.22s;border:1px solid transparent}
    .btn-primary{background:var(--yellow);color:#202d42;box-shadow:0 9px 20px rgba(255,209,102,.18)}
    .btn-primary:hover{background:#ffe39a;transform:translateY(-2px)}
    .btn-outline{border-color:rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.08)}
    .btn-outline:hover{background:#fff;color:var(--navy)}
    .hero-notice{display:flex;gap:10px;align-items:center;margin-top:42px;color:#c4d6e8;font-size:13px}
    .hero-notice b{color:#fff}
    .hero-sticker{position:absolute;right:5%;top:88px;background:var(--yellow);color:#202d42;padding:16px 18px;border-radius:50%;font-weight:900;font-size:14px;line-height:1.3;text-align:center;transform:rotate(8deg);box-shadow:0 14px 28px rgba(0,0,0,.2)}
    .metrics{margin-top:-45px;position:relative;z-index:2}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
    .metric{padding:25px 27px;border-right:1px solid var(--line)}
    .metric:last-child{border:0}.metric strong{font-size:30px;color:var(--navy);display:block;line-height:1.2}.metric span{color:var(--muted);font-size:13px}
    .matrix-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px}
    .matrix-item{padding:27px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm);min-height:210px}
    .matrix-item:nth-child(2){background:#eaf8fa}.matrix-item:nth-child(3){background:#fff8df}
    .matrix-icon{width:42px;height:42px;display:grid;place-items:center;background:var(--soft);color:var(--blue);border-radius:12px;font-weight:900;margin-bottom:21px}
    .matrix-item h3{font-size:20px;margin-bottom:9px}.matrix-item p{color:var(--muted);font-size:14px}
    .content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .content-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow-sm);transition:.22s}
    .content-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .thumb{height:188px;position:relative;overflow:hidden}.thumb img{height:100%;transition:.4s}.content-card:hover .thumb img{transform:scale(1.05)}
    .badge{position:absolute;top:12px;left:12px;padding:4px 8px;border-radius:7px;background:#fff;color:var(--navy);font-size:11px;font-weight:900}
    .badge.blue{background:var(--blue);color:#fff}.badge.yellow{background:var(--yellow)}
    .card-body{padding:16px 17px 18px}.card-body h3{font-size:16px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .meta{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px}.rating{color:#e29d17;font-weight:900}
    .popular-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .popular-card{display:grid;grid-template-columns:145px 1fr;min-height:150px;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow-sm)}
    .popular-card img{height:100%}.popular-card .card-body{padding:18px}.popular-card h3{white-space:normal;font-size:17px}
    .category-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .category{padding:22px 18px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:.2s}
    .category:hover{border-color:var(--blue);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
    .category h3{font-size:17px;margin-bottom:8px}.category p{font-size:13px;color:var(--muted)}
    .rank-layout{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
    .rank-list{list-style:none}.rank-item{display:grid;grid-template-columns:42px 1fr auto auto;gap:14px;align-items:center;padding:15px 0;border-bottom:1px solid rgba(223,232,241,.8)}
    .rank-no{font-size:19px;font-weight:900;color:#91a3b7}.rank-item:nth-child(-n+3) .rank-no{color:var(--blue)}
    .rank-title{font-weight:800}.rank-type{font-size:11px;color:var(--blue);background:var(--soft);padding:3px 8px;border-radius:5px}.heat{font-size:12px;color:var(--muted)}
    .rank-score{font-size:14px;font-weight:900;color:#e29d17}
    .editorial{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}
    .feature-news{border-radius:var(--radius);overflow:hidden;position:relative;min-height:365px;background:#1f3654}
    .feature-news img{height:100%;position:absolute;inset:0}.feature-news:after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(10,24,42,.9))}
    .feature-text{position:absolute;z-index:1;bottom:27px;left:28px;right:28px;color:#fff}.feature-text h3{font-size:25px;line-height:1.35;margin:8px 0}
    .news-list{display:grid;gap:12px}.news-item{display:grid;grid-template-columns:106px 1fr;gap:14px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:12px;background:#fff}
    .news-item img{height:76px;border-radius:8px}.news-item h3{font-size:14px;line-height:1.45}.news-item time{font-size:11px;color:var(--muted)}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:2px solid #70b9cd;margin-top:15px}
    .time-node{position:relative;padding:25px 20px 0 0}.time-node:before{content:"";position:absolute;top:-9px;left:0;width:16px;height:16px;border-radius:50%;background:var(--yellow);border:4px solid var(--navy)}
    .time-node strong{display:block;font-size:18px;color:var(--yellow);margin-bottom:8px}.time-node p{color:#c3d1e0;font-size:14px}
    .trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.trust{padding:25px;background:#203a5c;border:1px solid rgba(255,255,255,.11);border-radius:14px}.trust h3{font-size:17px;margin:13px 0 7px}.trust p{color:#c3d1e0;font-size:13px}.check{color:#70d2c6;font-size:22px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.faq{border:1px solid var(--line);border-radius:13px;background:#fff;padding:21px 23px}.faq h3{font-size:16px;margin-bottom:9px}.faq p{color:var(--muted);font-size:14px}
    .closing{background:#eaf3ff;padding:62px 0}.closing-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.closing h2{font-size:31px;line-height:1.35}.closing p{color:var(--muted);margin-top:8px}
    footer{background:#102238;color:#b9c8d8;padding:58px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px;padding-bottom:45px;border-bottom:1px solid rgba(255,255,255,.12)}footer .brand-name{color:#fff}footer .brand-mark{background:var(--cyan)}.footer-brand p{font-size:13px;max-width:290px;margin-top:17px;line-height:1.8}.footer-col h3{font-size:14px;color:#fff;margin-bottom:14px}.footer-col a{display:block;font-size:13px;margin:8px 0;color:#aebfd0;transition:.2s}.footer-col a:hover{color:var(--yellow)}.copyright{padding-top:22px;font-size:12px;color:#8094aa;display:flex;justify-content:space-between;gap:15px}
    :focus-visible{outline:3px solid rgba(34,168,199,.5);outline-offset:3px}
    @media(max-width:1024px){.content-grid{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(3,1fr)}.hero-sticker{right:3%}.nav-links a{padding-left:8px;padding-right:8px}}
    @media(max-width:768px){.container{width:min(var(--max),calc(100% - 32px))}.topbar{height:68px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:16px;right:16px;top:76px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:14px;padding:10px;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:12px}.nav-cta{text-align:center}.brand-name{font-size:14px}.hero{min-height:600px}.hero-inner{padding:80px 0}.hero-sticker{top:35px;right:25px;transform:scale(.85) rotate(8deg)}.metric-grid{grid-template-columns:repeat(2,1fr);margin-top:0}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid var(--line)}.section{padding:68px 0}.section-head{display:block}.section-head p{margin-top:12px}.matrix-grid,.editorial,.rank-layout{grid-template-columns:1fr}.content-grid{grid-template-columns:repeat(2,1fr)}.popular-grid{grid-template-columns:1fr 1fr}.category-grid{grid-template-columns:repeat(2,1fr)}.timeline{grid-template-columns:repeat(2,1fr);row-gap:25px}.trust-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.closing-inner{display:block}.closing .btn{margin-top:22px}}
    @media(max-width:520px){body{font-size:14px}.hero h1{font-size:36px}.hero-lead{font-size:16px}.hero-actions .btn{width:100%}.hero-notice{margin-top:26px}.metric{padding:20px 16px}.metric strong{font-size:25px}.content-grid,.popular-grid,.category-grid,.faq-grid,.trust-grid{grid-template-columns:1fr}.thumb{height:220px}.popular-card{grid-template-columns:125px 1fr}.popular-card .card-body{padding:13px}.rank-item{grid-template-columns:32px 1fr auto}.rank-type{display:none}.rank-score{grid-column:2}.timeline{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:5px}}