/* roulang page: index */
:root{
      --primary:#1769e0;
      --primary-dark:#0d48a8;
      --primary-soft:#eaf3ff;
      --secondary:#1bb7a6;
      --accent:#ffb84d;
      --bg:#f6f9fe;
      --surface:#ffffff;
      --surface-2:#f0f6ff;
      --text:#172033;
      --muted:#63718a;
      --light:#8a96aa;
      --border:#dde8f6;
      --shadow:0 18px 50px rgba(21,68,136,.12);
      --shadow-sm:0 10px 28px rgba(18,66,128,.08);
      --radius:22px;
      --radius-sm:14px;
      --container:1180px;
      --nav-height:74px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 5%, rgba(23,105,224,.12), transparent 28%),
        radial-gradient(circle at 88% 16%, rgba(27,183,166,.11), transparent 26%),
        var(--bg);
      line-height:1.65;
      min-height:100vh;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:rgba(23,105,224,.18)}
    .container{width:min(var(--container), calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(160%) blur(18px);
      background:rgba(255,255,255,.86);
      border-bottom:1px solid rgba(221,232,246,.82);
      box-shadow:0 8px 30px rgba(30,76,130,.06);
    }
    .nav-wrap{
      height:var(--nav-height);
      display:flex;align-items:center;justify-content:space-between;gap:24px;
    }
    .logo{
      display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:.02em;
      color:var(--primary-dark);font-size:22px;
    }
    .logo-mark{
      width:42px;height:42px;border-radius:14px;
      background:linear-gradient(135deg,var(--primary),#64a8ff 55%,var(--secondary));
      display:grid;place-items:center;color:#fff;font-size:18px;
      box-shadow:0 12px 26px rgba(23,105,224,.22);
    }
    .nav-center{display:flex;align-items:center;gap:10px}
    .nav-link,.mega-trigger{
      padding:10px 14px;border-radius:999px;color:#35435a;font-weight:700;
      transition:.22s ease;background:transparent;
    }
    .nav-link:hover,.mega-trigger:hover{background:var(--primary-soft);color:var(--primary)}
    .nav-link.active{background:#1769e0;color:#fff;box-shadow:0 10px 24px rgba(23,105,224,.24)}
    .mega{position:relative}
    .mega-panel{
      position:absolute;top:52px;left:50%;transform:translateX(-50%) translateY(12px);
      width:520px;padding:18px;border-radius:24px;background:rgba(255,255,255,.98);
      border:1px solid var(--border);box-shadow:var(--shadow);opacity:0;visibility:hidden;
      transition:.22s ease;
    }
    .mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
    .mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .mega-card{
      padding:14px;border-radius:16px;background:linear-gradient(180deg,#f8fbff,#fff);
      border:1px solid var(--border);
    }
    .mega-card b{display:block;color:var(--primary-dark);margin-bottom:3px}
    .mega-card span{font-size:13px;color:var(--muted)}
    .nav-actions{display:flex;align-items:center;gap:12px}
    .search-pill{
      display:flex;align-items:center;gap:8px;background:#f3f7fd;border:1px solid var(--border);
      border-radius:999px;padding:9px 12px;color:var(--muted);min-width:190px;
    }
    .search-pill input{
      width:120px;background:transparent;border:0;outline:0;color:var(--text);
    }
    .search-pill:focus-within{border-color:rgba(23,105,224,.55);box-shadow:0 0 0 4px rgba(23,105,224,.1)}
    .menu-btn{
      display:none;width:42px;height:42px;border-radius:14px;background:var(--primary-soft);
      color:var(--primary);font-weight:900;
    }
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:46px;padding:12px 18px;border-radius:999px;font-weight:800;
      transition:.22s ease;border:1px solid transparent;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),#5ca2ff);color:#fff;box-shadow:0 14px 30px rgba(23,105,224,.28)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(23,105,224,.34)}
    .btn-secondary{background:#fff;color:var(--primary);border-color:rgba(23,105,224,.22);box-shadow:var(--shadow-sm)}
    .btn-secondary:hover{background:var(--primary-soft);transform:translateY(-2px)}
    .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.35)}
    .btn-ghost:hover{background:rgba(255,255,255,.22)}
    .btn:focus-visible,.nav-link:focus-visible,.mega-trigger:focus-visible,input:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(27,183,166,.35);outline-offset:3px;
    }
    main{overflow:hidden}
    section{padding:78px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:30px}
    .section-kicker{
      display:inline-flex;align-items:center;gap:8px;
      color:var(--primary);font-weight:900;font-size:14px;margin-bottom:10px;
    }
    .section-title{font-size:34px;line-height:1.22;letter-spacing:-.02em}
    .section-desc{max-width:650px;color:var(--muted);font-size:16px}
    .badge{
      display:inline-flex;align-items:center;gap:7px;padding:7px 11px;border-radius:999px;
      background:var(--primary-soft);color:var(--primary-dark);font-weight:800;font-size:13px;
    }
    .hero{
      padding:54px 0 76px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.88),rgba(234,243,255,.8)),
        radial-gradient(circle at 50% 0, rgba(27,183,166,.15), transparent 35%);
    }
    .hero-stage{
      border:1px solid rgba(221,232,246,.9);
      border-radius:34px;
      background:linear-gradient(135deg,#ffffff 0%,#f2f8ff 62%,#e9f8f6 100%);
      box-shadow:var(--shadow);
      padding:36px;
      display:grid;
      grid-template-columns:1.04fr .96fr;
      gap:28px;
      align-items:stretch;
      position:relative;
      overflow:hidden;
    }
    .hero-stage:before{
      content:"";position:absolute;right:-90px;top:-90px;width:260px;height:260px;border-radius:50%;
      background:rgba(23,105,224,.09);
    }
    .hero-copy{position:relative;z-index:1;padding:10px 0}
    .hero h1{
      font-size:50px;line-height:1.12;letter-spacing:-.035em;margin:16px 0 18px;
      max-width:760px;
    }
    .hero-lead{font-size:18px;color:#4b5b72;max-width:720px;margin-bottom:24px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}
    .hero-points{display:flex;flex-wrap:wrap;gap:12px}
    .point{
      display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.72);
      border:1px solid rgba(221,232,246,.9);border-radius:999px;padding:9px 12px;
      color:#40506a;font-weight:700;font-size:14px;
    }
    .group-panel{
      position:relative;z-index:1;background:#fff;border:1px solid var(--border);
      border-radius:28px;padding:22px;box-shadow:0 18px 44px rgba(29,86,154,.12);
      display:flex;flex-direction:column;gap:16px;
    }
    .group-top{display:flex;align-items:center;justify-content:space-between;gap:14px}
    .group-title b{display:block;font-size:20px}
    .group-title span{color:var(--muted);font-size:14px}
    .group-count{
      background:#10284f;color:#fff;border-radius:18px;padding:14px 16px;min-width:126px;text-align:center;
    }
    .group-count strong{font-size:28px;line-height:1}
    .progress-card{padding:18px;border-radius:22px;background:linear-gradient(180deg,#f6faff,#fff);border:1px solid var(--border)}
    .progress-row{display:flex;justify-content:space-between;color:var(--muted);font-size:14px;margin-bottom:10px}
    .progress-track{height:12px;border-radius:999px;background:#e3edf9;overflow:hidden}
    .progress-fill{height:100%;width:76%;border-radius:999px;background:linear-gradient(90deg,var(--secondary),var(--primary))}
    .member-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .member{
      padding:12px;border-radius:16px;background:#f7fbff;border:1px solid var(--border);text-align:center;
    }
    .member strong{display:block;color:var(--primary-dark);font-size:20px}
    .member span{color:var(--muted);font-size:12px}
    .notice{
      display:flex;gap:10px;align-items:flex-start;color:#44536b;background:#fff7e8;
      border:1px solid rgba(255,184,77,.34);border-radius:18px;padding:13px 14px;font-size:14px;
    }
    .commission{background:#fff}
    .commission-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:stretch}
    .rate-card{
      border-radius:28px;padding:28px;background:linear-gradient(135deg,#0f3e87,#1769e0);
      color:#fff;box-shadow:var(--shadow);position:relative;overflow:hidden;
    }
    .rate-card:after{content:"";position:absolute;right:-60px;bottom:-70px;width:190px;height:190px;border-radius:50%;background:rgba(255,255,255,.12)}
    .rate-card h2{font-size:32px;line-height:1.25;margin:12px 0}
    .rate-card p{color:rgba(255,255,255,.82)}
    .rate-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
    .rate-stat{padding:16px;border-radius:18px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2)}
    .rate-stat strong{display:block;font-size:26px}
    .benefit-list{display:grid;gap:14px}
    .benefit-item{
      display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;
      padding:18px;border-radius:22px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-sm);
      transition:.22s ease;
    }
    .benefit-item:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:var(--primary-soft);color:var(--primary);font-weight:900;
    }
    .benefit-item h3{font-size:18px;margin-bottom:2px}
    .benefit-item p{color:var(--muted);font-size:14px}
    .arrow{color:var(--light)}
    .materials{background:linear-gradient(180deg,#f6f9fe,#fff)}
    .material-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
    .poster-wall{
      display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
      padding:18px;border-radius:28px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-sm);
    }
    .poster{
      min-height:150px;border-radius:20px;padding:18px;display:flex;flex-direction:column;justify-content:space-between;
      background:linear-gradient(135deg,#eef6ff,#ffffff);border:1px solid var(--border);
      transition:.22s ease;
    }
    .poster:nth-child(2){background:linear-gradient(135deg,#eefbf8,#fff)}
    .poster:nth-child(3){background:linear-gradient(135deg,#fff7e8,#fff)}
    .poster:nth-child(4){background:linear-gradient(135deg,#f1efff,#fff)}
    .poster:hover{transform:translateY(-3px)}
    .poster b{font-size:18px}
    .poster span{color:var(--muted);font-size:14px}
    .tool-card{
      border-radius:28px;background:#10284f;color:#fff;padding:24px;box-shadow:var(--shadow);
      display:flex;flex-direction:column;justify-content:space-between;gap:22px;
    }
    .tool-card p{color:rgba(255,255,255,.78)}
    .tool-list{display:grid;gap:10px}
    .tool-list li{list-style:none;display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.12)}
    .steps{background:#fff}
    .step-strip{
      display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:16px;align-items:stretch;
    }
    .step-card{
      background:#fff;border:1px solid var(--border);border-radius:24px;padding:24px;box-shadow:var(--shadow-sm);
    }
    .step-no{width:42px;height:42px;border-radius:14px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900;margin-bottom:14px}
    .step-card h3{font-size:20px;margin-bottom:8px}
    .step-card p{color:var(--muted)}
    .step-line{width:42px;display:flex;align-items:center;justify-content:center;color:var(--primary);font-weight:900}
    .proof{background:linear-gradient(180deg,#fff,#f6f9fe)}
    .proof-layout{display:grid;grid-template-columns:.95fr 1.05fr;gap:22px}
    .quote-card{
      border-radius:28px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);
      padding:28px;
    }
    .quote-card blockquote{font-size:22px;line-height:1.55;font-weight:800;margin:16px 0;color:#23304a}
    .quote-card p{color:var(--muted)}
    .case-list{display:grid;gap:12px}
    .case-row{
      display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;
      background:#fff;border:1px solid var(--border);border-radius:20px;padding:16px;box-shadow:var(--shadow-sm);
    }
    .case-row small{color:var(--muted)}
    .case-row strong{font-size:18px}
    .data{background:#fff}
    .data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .kpi{
      padding:22px;border-radius:24px;background:linear-gradient(180deg,#fff,#f7fbff);
      border:1px solid var(--border);box-shadow:var(--shadow-sm);
    }
    .kpi strong{display:block;font-size:32px;color:var(--primary-dark);line-height:1.15;margin:8px 0}
    .kpi span{color:var(--muted);font-size:14px}
    .bar-mini{height:8px;background:#e6effa;border-radius:999px;margin-top:16px;overflow:hidden}
    .bar-mini i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--secondary))}
    .news{background:linear-gradient(180deg,#f6f9fe,#fff)}
    .news-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}
    .news-list{
      background:#fff;border:1px solid var(--border);border-radius:28px;box-shadow:var(--shadow-sm);overflow:hidden;
    }
    .news-item{
      display:grid;grid-template-columns:110px 1fr auto;gap:16px;align-items:center;
      padding:18px 20px;border-bottom:1px solid var(--border);transition:.2s ease;
    }
    .news-item:last-child{border-bottom:0}
    .news-item:hover{background:#f7fbff}
    .news-date{color:var(--primary);font-weight:900}
    .news-item h3{font-size:17px;margin-bottom:2px}
    .news-item p{color:var(--muted);font-size:14px}
    .news-state{font-size:13px;color:var(--secondary);font-weight:900;background:#eafaf7;padding:6px 10px;border-radius:999px}
    .recommend{
      background:#10284f;color:#fff;border-radius:28px;padding:24px;box-shadow:var(--shadow);
    }
    .recommend p{color:rgba(255,255,255,.75);margin:8px 0 18px}
    .rec-track{display:grid;gap:12px}
    .rec-card{
      padding:15px;border-radius:18px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);
      transition:.22s ease;
    }
    .rec-card:hover{background:rgba(255,255,255,.16)}
    .rec-card b{display:block;margin-bottom:3px}
    .rec-card span{font-size:13px;color:rgba(255,255,255,.72)}
    .faq{background:#fff}
    .faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px}
    .faq-aside{
      border-radius:28px;background:var(--primary-soft);border:1px solid var(--border);padding:26px;
    }
    .faq-aside h2{font-size:28px;line-height:1.25;margin:10px 0}
    .faq-aside p{color:var(--muted)}
    .faq-list{display:grid;gap:12px}
    details{
      background:#fff;border:1px solid var(--border);border-radius:20px;padding:18px 20px;
      box-shadow:var(--shadow-sm);
    }
    summary{cursor:pointer;font-weight:900;list-style:none;display:flex;justify-content:space-between;gap:16px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";color:var(--primary);font-size:22px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);margin-top:12px}
    .join{padding-bottom:92px;background:linear-gradient(180deg,#fff,#f3f8ff)}
    .join-panel{
      border-radius:34px;overflow:hidden;background:linear-gradient(135deg,#0f3e87,#1769e0 58%,#1bb7a6);
      box-shadow:0 22px 60px rgba(23,105,224,.28);display:grid;grid-template-columns:1fr .88fr;
      color:#fff;
    }
    .join-copy{padding:34px}
    .join-copy h2{font-size:36px;line-height:1.2;margin:12px 0}
    .join-copy p{color:rgba(255,255,255,.82);max-width:650px}
    .join-bullets{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .join-bullets div{padding:13px;border-radius:16px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);font-weight:800}
    .join-form{
      margin:18px;background:#fff;color:var(--text);border-radius:26px;padding:22px;
      display:grid;gap:12px;align-self:stretch;
    }
    .field{display:grid;gap:6px}
    .field label{font-weight:900;font-size:14px}
    .field input,.field textarea{
      width:100%;border:1px solid var(--border);border-radius:16px;padding:12px 14px;outline:0;background:#f8fbff;
      transition:.2s ease;color:var(--text);
    }
    .field textarea{min-height:92px;resize:vertical}
    .field input:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(23,105,224,.1);background:#fff}
    .form-tip{font-size:13px;color:var(--muted)}
    .site-footer{
      background:#0d1f3d;color:#d8e4f4;padding:44px 0 26px;
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:24px;margin-bottom:28px}
    .footer-brand .logo{color:#fff;margin-bottom:12px}
    .footer-brand p{color:#9fb0c8;max-width:520px}
    .footer-col h3{font-size:16px;margin-bottom:12px;color:#fff}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#9fb0c8;transition:.2s ease}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .copyright{
      border-top:1px solid rgba(255,255,255,.1);padding-top:18px;color:#91a4bd;font-size:14px;
      display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    }
    .float-cta{
      position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:40;
      width:min(760px,calc(100% - 28px));background:rgba(255,255,255,.94);backdrop-filter:blur(16px);
      border:1px solid var(--border);box-shadow:var(--shadow);border-radius:999px;
      padding:10px 12px;display:flex;align-items:center;justify-content:space-between;gap:14px;
    }
    .float-cta span{font-weight:900;color:var(--primary-dark);padding-left:10px}
    @media (max-width:1024px){
      .hero-stage,.commission-layout,.material-grid,.proof-layout,.faq-grid,.join-panel{grid-template-columns:1fr}
      .data-grid{grid-template-columns:repeat(2,1fr)}
      .step-strip{grid-template-columns:1fr;gap:12px}
      .step-line{display:none}
      .join-form{margin:0 24px 24px}
    }
    @media (max-width:768px){
      :root{--nav-height:auto}
      .container{width:min(100% - 28px,var(--container))}
      .nav-wrap{height:auto;min-height:68px;flex-wrap:wrap;padding:12px 0}
      .menu-btn{display:block}
      .nav-center,.nav-actions{
        width:100%;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--border);
        border-radius:22px;padding:12px;box-shadow:var(--shadow-sm);
      }
      .site-header.open .nav-center,.site-header.open .nav-actions{display:flex}
      .nav-link,.mega-trigger{text-align:left;border-radius:14px}
      .mega-panel{position:static;transform:none;width:100%;opacity:1;visibility:visible;box-shadow:none;margin-top:8px;display:none}
      .mega:hover .mega-panel,.mega:focus-within .mega-panel{transform:none}
      .mega.open .mega-panel{display:block}
      .search-pill{width:100%;min-width:0}
      .search-pill input{width:100%}
      section{padding:56px 0}
      .hero{padding-top:24px}
      .hero-stage{padding:24px;border-radius:26px}
      .hero h1{font-size:36px}
      .section-head{display:block}
      .section-title{font-size:28px}
      .member-list,.rate-stats,.poster-wall,.join-bullets,.footer-grid{grid-template-columns:1fr}
      .news-layout{grid-template-columns:1fr}
      .news-item{grid-template-columns:1fr;gap:7px}
      .float-cta{border-radius:22px;align-items:stretch;flex-direction:column}
      .float-cta .btn{width:100%}
    }
    @media (max-width:520px){
      .hero h1{font-size:31px}
      .hero-lead{font-size:16px}
      .hero-actions .btn{width:100%}
      .group-top{align-items:flex-start;flex-direction:column}
      .group-count{width:100%}
      .data-grid{grid-template-columns:1fr}
      .benefit-item,.case-row{grid-template-columns:1fr}
      .join-copy{padding:24px}
      .join-copy h2{font-size:29px}
      .logo{font-size:20px}
      .logo-mark{width:38px;height:38px}
    }