/* roulang page: index */
:root{--navy:#10243e;--blue:#1769aa;--cyan:#39a9db;--ink:#182433;--muted:#657589;--paper:#f5f8fb;--white:#fff;--line:#dce5ee;--gold:#e9a93a;--radius:14px;--shadow:0 12px 32px rgba(22,48,78,.09)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75}a{color:inherit;text-decoration:none;transition:.25s ease}img{display:block;width:100%;object-fit:cover}button,input{font:inherit}.container{max-width:1180px;margin:0 auto;padding:0 24px}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.nav-wrap{height:76px;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:11px;font-weight:800;color:var(--navy);font-size:18px;white-space:nowrap}.brand-mark{width:38px;height:38px;border-radius:10px;background:var(--navy);color:#fff;display:grid;place-items:center;font-size:19px;box-shadow:0 6px 14px rgba(16,36,62,.2)}.main-nav{display:flex;align-items:center;gap:7px;margin-left:auto}.main-nav a{padding:9px 14px;border-radius:8px;color:var(--muted);font-size:14px}.main-nav a:hover,.main-nav a.active{color:var(--blue);background:#edf6fc}.nav-search{border:1px solid var(--line);border-radius:9px;padding:8px 12px;color:var(--muted);font-size:13px}.menu-toggle{display:none;border:0;background:none;color:var(--navy);font-size:25px}
    .hero{background:var(--navy);color:#fff;padding:82px 0 76px;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;right:-130px;top:-180px;width:520px;height:520px;border:1px solid rgba(94,190,228,.25);border-radius:50%;box-shadow:0 0 0 70px rgba(94,190,228,.05),0 0 0 140px rgba(94,190,228,.03)}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center;position:relative;z-index:1}.eyebrow{color:#74c8e7;font-size:13px;font-weight:700;letter-spacing:2px}.hero h1{font-size:clamp(34px,5vw,58px);line-height:1.2;margin:14px 0 20px;letter-spacing:0}.hero h1 span{color:#6dd0ee}.hero p{color:#d4e3ef;max-width:680px;font-size:16px;margin-bottom:28px}.button{display:inline-flex;align-items:center;justify-content:center;border-radius:8px;padding:12px 22px;font-weight:700;font-size:14px;border:1px solid transparent;transition:.25s}.button.primary{background:var(--cyan);color:#08233a}.button.primary:hover{background:#70d5ef;transform:translateY(-2px)}.button.outline{border-color:rgba(255,255,255,.4);color:#fff;margin-left:10px}.button.outline:hover{border-color:#fff;background:rgba(255,255,255,.08)}.hero-panel{background:#173554;border:1px solid rgba(144,207,231,.25);border-radius:16px;padding:24px;box-shadow:0 20px 50px rgba(0,0,0,.17)}.panel-top{display:flex;justify-content:space-between;color:#a9c8db;font-size:12px;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:15px;margin-bottom:18px}.signal{color:#7ee0b0}.code-line{display:flex;gap:12px;font-family:monospace;font-size:13px;color:#c9e5f2;margin:10px 0}.code-line i{color:#68c5e7;font-style:normal}.panel-note{margin-top:19px;padding:13px;background:rgba(255,255,255,.06);border-radius:9px;color:#c4d9e6;font-size:13px}
    main{overflow:hidden}.section{padding:76px 0}.section.alt{background:#fff}.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}.section-head h2{color:var(--navy);font-size:29px;line-height:1.3;margin:0}.section-head p{color:var(--muted);font-size:14px;max-width:590px;margin:0}.text-link{color:var(--blue);font-weight:700;font-size:14px;white-space:nowrap}.text-link:hover{color:var(--cyan)}.ticker{background:#eaf4fa;border-bottom:1px solid #d7e8f2;padding:12px 0;color:#295371;font-size:13px}.ticker strong{color:var(--blue);margin-right:18px}
    .category-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:15px}.category{padding:22px;background:#fff;border:1px solid var(--line);border-radius:12px;transition:.25s;box-shadow:0 5px 16px rgba(16,36,62,.03)}.category:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#abd8eb}.category .cat-icon{color:var(--blue);font-size:24px}.category h3{font-size:17px;margin:9px 0 5px;color:var(--navy)}.category p{font-size:12px;color:var(--muted);line-height:1.6;margin:0}
    .content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.content-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 5px 18px rgba(16,36,62,.04);transition:.28s}.content-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.cover{height:190px;position:relative}.cover img{height:100%}.cover:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(8,23,42,.65),transparent 55%)}.badge{position:absolute;z-index:1;top:12px;left:12px;background:var(--cyan);color:#08233a;border-radius:5px;padding:2px 8px;font-size:11px;font-weight:800}.card-body{padding:16px}.card-body h3{font-size:16px;color:var(--navy);margin:0 0 5px;line-height:1.45}.meta{color:var(--muted);font-size:12px;display:flex;justify-content:space-between}.score{color:#b77913;font-weight:700}.wide-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:30px}.feature{min-height:310px;border-radius:16px;overflow:hidden;position:relative;background:#183957;color:#fff}.feature img{height:100%;position:absolute;inset:0;opacity:.72}.feature:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(7,22,40,.9),transparent 70%)}.feature-copy{position:absolute;z-index:1;left:28px;right:28px;bottom:25px}.feature-copy h3{font-size:25px;margin:7px 0}.feature-copy p{font-size:13px;color:#d9e8f1;margin:0}.quote-box{background:#fff;border:1px solid var(--line);border-left:4px solid var(--cyan);padding:26px;border-radius:12px;display:flex;flex-direction:column;justify-content:center}.quote-box p{font-size:18px;color:var(--navy);line-height:1.7;margin:0 0 18px}.quote-box small{color:var(--muted)}
    .rank-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 35px;background:#fff;border-top:2px solid var(--navy);padding:8px 22px}.rank-item{display:grid;grid-template-columns:36px 1fr auto auto;gap:15px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line);font-size:14px}.rank-no{font-size:19px;color:#b7c2ce;font-weight:800}.rank-item:nth-child(-n+3) .rank-no{color:var(--gold)}.rank-name{font-weight:700;color:var(--navy)}.rank-type{font-size:11px;color:var(--blue);background:#edf6fc;padding:2px 7px;border-radius:4px}.rank-hot{font-size:12px;color:var(--muted)}
    .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.news-item{display:grid;grid-template-columns:120px 1fr;gap:15px;align-items:center;background:#fff;padding:12px;border:1px solid var(--line);border-radius:10px}.news-item img{height:85px;border-radius:7px}.news-item h3{font-size:14px;line-height:1.5;color:var(--navy);margin:0 0 5px}.news-item time{font-size:11px;color:var(--muted)}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.step{padding:24px 25px;border-top:1px solid var(--line);position:relative}.step:not(:last-child):after{content:"→";position:absolute;right:-9px;top:18px;color:var(--cyan);font-size:23px}.step-no{color:var(--cyan);font-weight:800;font-size:13px}.step h3{font-size:16px;color:var(--navy);margin:8px 0}.step p{font-size:13px;color:var(--muted);margin:0}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}.stat{background:#fff;text-align:center;padding:25px}.stat strong{display:block;font-size:30px;color:var(--blue);line-height:1.2}.stat span{font-size:13px;color:var(--muted)}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.faq{background:#fff;border:1px solid var(--line);padding:20px 22px;border-radius:10px}.faq h3{font-size:15px;color:var(--navy);margin:0 0 8px}.faq p{font-size:13px;color:var(--muted);margin:0}.cta{background:var(--blue);color:#fff;padding:52px 0}.cta-wrap{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{font-size:29px;margin:0 0 8px}.cta p{color:#d7edf7;margin:0;font-size:14px}.cta .button{background:#fff;color:var(--blue)}.cta .button:hover{background:#e9f8fd}
    footer{background:#10243e;color:#cad9e5;padding:53px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}.footer-brand{color:#fff;font-size:19px;font-weight:800;margin-bottom:12px}.footer h3{font-size:14px;color:#fff;margin:0 0 13px}.footer p,.footer a{font-size:13px;color:#a8bfce;margin:0 0 7px}.footer a:hover{color:#6dd0ee}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;color:#8ea8b9;font-size:12px}
    @media(max-width:1024px){.hero-grid{gap:35px}.content-grid{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(3,1fr)}.news-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.nav-wrap{height:66px}.main-nav{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;padding:10px 24px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{display:block}.nav-search{display:none}.menu-toggle{display:block;margin-left:auto}.hero{padding:58px 0}.hero-grid,.wide-grid{grid-template-columns:1fr}.hero-panel{max-width:600px}.section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:10px}.section-head .text-link{display:inline-block;margin-top:12px}.content-grid{grid-template-columns:repeat(2,1fr)}.rank-grid{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.step:not(:last-child):after{display:none}.stats{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:520px){.container{padding:0 17px}.brand{font-size:15px}.brand-mark{width:34px;height:34px}.hero h1{font-size:35px}.hero p{font-size:14px}.button{padding:10px 15px}.category-grid,.content-grid,.news-grid,.faq-grid{grid-template-columns:1fr}.cover{height:210px}.rank-grid{padding:8px 12px}.rank-item{grid-template-columns:28px 1fr auto;gap:9px}.rank-hot{display:none}.steps,.footer-grid{grid-template-columns:1fr}.cta-wrap{display:block}.cta .button{margin-top:20px}.feature{min-height:290px}}