/* roulang page: index */
:root{
            --ink:#172334;
            --muted:#6d7a8b;
            --soft:#f4f7fb;
            --line:#e3e9f1;
            --blue:#246bce;
            --blue-dark:#164a97;
            --cyan:#23a6b8;
            --gold:#e9aa45;
            --white:#fff;
            --navy:#10243f;
            --radius:16px;
            --shadow:0 14px 38px rgba(25,58,99,.09);
            --shadow-hover:0 20px 44px rgba(25,58,99,.16);
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.7;font-size:15px}
        img{display:block;width:100%;height:auto}
        a{color:inherit;text-decoration:none}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(1160px,calc(100% - 44px));margin:0 auto}
        .topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(227,233,241,.9);backdrop-filter:blur(16px)}
        .nav{height:76px;display:flex;align-items:center;gap:30px}
        .brand{display:flex;align-items:center;gap:11px;min-width:max-content;font-weight:800;color:var(--navy);font-size:17px}
        .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--blue);display:grid;place-items:center;color:white;font-size:17px;box-shadow:0 8px 18px rgba(36,107,206,.25)}
        .nav-links{display:flex;align-items:center;gap:25px;margin-left:auto}
        .nav-links a{position:relative;color:#59687b;font-size:14px;font-weight:600;padding:25px 0;transition:.2s}
        .nav-links a:hover,.nav-links a.active{color:var(--blue)}
        .nav-links a.active:after{content:"";position:absolute;bottom:15px;left:0;right:0;height:2px;background:var(--blue);border-radius:2px}
        .nav-action{padding:10px 16px;border:1px solid #cbd9ea;border-radius:10px;color:var(--blue);font-weight:700;font-size:13px;transition:.2s}
        .nav-action:hover{background:#eef5ff;border-color:#9bbce7}
        .menu-toggle{display:none;border:0;background:none;color:var(--navy);font-size:24px}
        .hero{background:linear-gradient(110deg,#f2f7ff 0%,#fff 56%,#eef9fa 100%);padding:78px 0 70px;border-bottom:1px solid #eaf0f6}
        .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:68px;align-items:center}
        .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.04em;margin-bottom:17px}
        .eyebrow:before{content:"";width:25px;height:2px;background:var(--cyan)}
        h1{font-size:clamp(34px,4.5vw,58px);line-height:1.18;letter-spacing:0;font-weight:850;color:var(--navy);max-width:620px}
        h1 em{font-style:normal;color:var(--blue)}
        .hero-copy{font-size:17px;color:#607086;max-width:620px;margin:22px 0 28px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:10px;font-weight:750;border:1px solid transparent;transition:.25s}
        .btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(36,107,206,.22)}
        .btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(36,107,206,.28)}
        .btn-outline{border-color:#c9d8e9;color:var(--blue);background:#fff}
        .btn-outline:hover{border-color:var(--blue);background:#f4f8ff}
        .btn:focus,.nav-action:focus,.menu-toggle:focus{outline:3px solid rgba(36,107,206,.25);outline-offset:3px}
        .hero-panel{background:var(--white);border:1px solid #dfe9f4;border-radius:22px;padding:22px;box-shadow:var(--shadow);position:relative}
        .hero-photo{height:226px;object-fit:cover;border-radius:14px}
        .hero-panel-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:15px}
        .metric{background:#f7faff;border-radius:12px;padding:14px 15px;border:1px solid #e8f0f8}
        .metric strong{display:block;color:var(--blue);font-size:24px;line-height:1.2}
        .metric span{font-size:12px;color:var(--muted)}
        .section{padding:82px 0}
        .section-soft{background:var(--soft)}
        .section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:31px}
        .section-kicker{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px}
        h2{font-size:31px;line-height:1.3;color:var(--navy);letter-spacing:0}
        .section-intro{max-width:570px;color:var(--muted);font-size:15px}
        .text-link{color:var(--blue);font-weight:750;font-size:14px;white-space:nowrap}
        .text-link:hover{text-decoration:underline}
        .benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .benefit{padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 25px rgba(31,63,104,.05)}
        .benefit-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:#eaf3ff;color:var(--blue);font-size:20px;margin-bottom:15px}
        .benefit:nth-child(2) .benefit-icon{background:#e8f8f7;color:#159a9c}
        .benefit:nth-child(3) .benefit-icon{background:#fff4e3;color:#bf7920}
        h3{font-size:18px;line-height:1.4;color:var(--navy)}
        .benefit p{color:var(--muted);font-size:14px;margin-top:8px}
        .directory{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:stretch}
        .directory-main{min-height:255px;border-radius:18px;overflow:hidden;position:relative;background:#183a67}
        .directory-main img{height:100%;object-fit:cover;opacity:.68}
        .directory-overlay{position:absolute;inset:0;padding:28px;display:flex;flex-direction:column;justify-content:end;background:linear-gradient(0deg,rgba(8,28,54,.82),transparent 75%);color:#fff}
        .directory-overlay h3{color:#fff;font-size:25px}
        .directory-overlay p{font-size:14px;color:#d9e6f6;max-width:450px;margin-top:5px}
        .directory-side{display:grid;grid-template-columns:1fr 1fr;gap:14px}
        .directory-item{padding:20px;background:#f6f9fd;border:1px solid var(--line);border-radius:14px;transition:.2s}
        .directory-item:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
        .directory-item b{display:block;color:var(--blue);font-size:14px;margin-bottom:5px}
        .directory-item p{font-size:13px;color:var(--muted);line-height:1.6}
        .content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
        .content-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;box-shadow:0 7px 20px rgba(25,58,99,.04)}
        .content-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
        .card-image{height:172px;position:relative;overflow:hidden}
        .card-image img{height:100%;object-fit:cover;transition:.35s}
        .content-card:hover .card-image img{transform:scale(1.05)}
        .badge{position:absolute;top:12px;left:12px;padding:3px 8px;border-radius:6px;background:rgba(15,36,63,.82);color:#fff;font-size:11px;font-weight:750}
        .badge.cyan{background:#159a9c}
        .badge.gold{background:#b87818}
        .card-body{padding:15px 16px 17px}
        .card-body h3{font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
        .card-meta{display:flex;justify-content:space-between;gap:8px;margin-top:8px;color:var(--muted);font-size:12px}
        .score{color:#c17a1c;font-weight:800}
        .six-grid{grid-template-columns:repeat(3,1fr)}
        .six-grid .card-image{height:190px}
        .topic-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
        .topic{border:1px solid var(--line);border-radius:14px;padding:20px 17px;background:white;min-height:145px}
        .topic-number{color:#9db3cf;font-size:24px;font-weight:800}
        .topic h3{font-size:16px;margin:5px 0}
        .topic p{color:var(--muted);font-size:13px;line-height:1.6}
        .rank-layout{display:grid;grid-template-columns:1fr 1fr;gap:25px}
        .ranking{border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden}
        .rank-row{display:grid;grid-template-columns:39px 1fr auto auto;align-items:center;gap:12px;padding:13px 18px;border-bottom:1px solid #edf1f5}
        .rank-row:last-child{border-bottom:0}
        .rank-no{font-size:18px;font-weight:850;color:#a7b7ca}
        .rank-row:nth-child(-n+3) .rank-no{color:var(--blue)}
        .rank-title{font-weight:700;font-size:14px}
        .rank-type{font-size:11px;color:var(--blue);background:#edf5ff;padding:3px 7px;border-radius:5px}
        .rank-score{font-size:13px;color:#b37825;font-weight:750}
        .news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
        .news-item{display:grid;grid-template-columns:112px 1fr;gap:15px;padding:12px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:.2s}
        .news-item:hover{box-shadow:var(--shadow);border-color:#bed4ee}
        .news-item img{height:82px;object-fit:cover;border-radius:9px}
        .news-item h3{font-size:15px;margin:5px 0 7px}
        .news-item time{font-size:12px;color:var(--muted)}
        .share-band{background:var(--navy);color:white;border-radius:20px;padding:36px 42px;display:flex;align-items:center;justify-content:space-between;gap:25px}
        .share-band h2{color:#fff;font-size:27px}
        .share-band p{color:#bdcde0;margin-top:6px;max-width:650px}
        .share-band .btn-outline{background:transparent;color:#fff;border-color:#7186a2}
        .share-band .btn-outline:hover{background:#29435f;border-color:#fff}
        .quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .quote{border:1px solid var(--line);border-radius:16px;padding:24px;background:#fff}
        .stars{color:#e5a43e;letter-spacing:2px;font-size:15px}
        .quote p{font-size:14px;color:#596b80;margin:13px 0 17px}
        .quote-user{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:700}
        .avatar{width:31px;height:31px;border-radius:50%;display:grid;place-items:center;color:#fff;background:#4c86c8}
        .quote:nth-child(2) .avatar{background:#17a0a0}
        .quote:nth-child(3) .avatar{background:#c88938}
        .faq{max-width:820px;margin:auto;border-top:1px solid var(--line)}
        details{border-bottom:1px solid var(--line);padding:18px 0}
        summary{cursor:pointer;list-style:none;font-weight:750;color:var(--navy);display:flex;justify-content:space-between;gap:20px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"＋";color:var(--blue);font-size:20px;line-height:1}
        details[open] summary:after{content:"－"}
        details p{color:var(--muted);font-size:14px;padding:12px 30px 0 0}
        .closing{background:#edf5ff;text-align:center;padding:62px 0}
        .closing h2{font-size:34px}
        .closing p{color:var(--muted);max-width:620px;margin:10px auto 22px}
        footer{background:#10243f;color:#c3d0df;padding:55px 0 22px}
        .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;padding-bottom:40px}
        footer .brand{color:#fff;margin-bottom:13px}
        footer .brand-mark{background:#2d78da}
        .footer-desc{font-size:13px;line-height:1.8;max-width:300px;color:#9fb0c5}
        footer h3{color:#fff;font-size:14px;margin-bottom:13px}
        footer a{display:block;color:#9fb0c5;font-size:13px;margin:7px 0;transition:.2s}
        footer a:hover{color:#fff}
        .copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;color:#8195ad;font-size:12px;display:flex;justify-content:space-between;gap:15px}
        @media(max-width:1024px){
            .nav{gap:18px}.nav-links{gap:15px}
            .hero-grid{gap:35px}.content-grid{grid-template-columns:repeat(3,1fr)}
            .topic-grid{grid-template-columns:repeat(3,1fr)}
        }
        @media(max-width:768px){
            .container{width:min(100% - 32px,600px)}
            .nav{height:66px}.menu-toggle{display:block;margin-left:auto}
            .nav-links{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;padding:10px 22px 18px;box-shadow:0 12px 22px rgba(18,49,87,.1);flex-direction:column;align-items:stretch;gap:0}
            .nav-links.open{display:flex}.nav-links a{padding:11px 0}.nav-links a.active:after{display:none}.nav-action{display:none}
            .hero{padding:52px 0 45px}.hero-grid{grid-template-columns:1fr}.hero-panel{max-width:570px}
            .section{padding:58px 0}.section-head{display:block}.section-intro{margin-top:10px}.section-head .text-link{display:inline-block;margin-top:13px}
            .benefits,.quote-grid{grid-template-columns:1fr}.directory{grid-template-columns:1fr}
            .content-grid,.six-grid{grid-template-columns:repeat(2,1fr)}.topic-grid{grid-template-columns:repeat(2,1fr)}
            .rank-layout{grid-template-columns:1fr}.news-list{grid-template-columns:1fr}
            .share-band{display:block;padding:28px}.share-band .btn{margin-top:19px}
            .footer-grid{grid-template-columns:1fr 1fr}
        }
        @media(max-width:520px){
            h1{font-size:35px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}
            .content-grid,.six-grid,.topic-grid{grid-template-columns:1fr}
            .card-image,.six-grid .card-image{height:210px}
            .directory-side{grid-template-columns:1fr 1fr}.directory-item{padding:15px 12px}
            .rank-row{grid-template-columns:30px 1fr auto;gap:8px;padding:12px}
            .rank-type{display:none}.rank-score{font-size:12px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:24px}.copyright{display:block}.copyright span{display:block;margin-top:5px}
        }