/* roulang page: index */
:root{
      --brand:#184fa8;
      --brand-dark:#0a2348;
      --brand-soft:#eef6ff;
      --accent:#d9a441;
      --ink:#132033;
      --muted:#607086;
      --weak:#8a97a8;
      --line:#d9e2ef;
      --bg:#f5f8fc;
      --card:#ffffff;
      --radius-sm:10px;
      --radius:18px;
      --radius-lg:28px;
      --shadow-sm:0 8px 24px rgba(19,32,51,.08);
      --shadow:0 18px 50px rgba(20,63,132,.13);
      --shadow-strong:0 24px 70px rgba(10,35,72,.18);
      --container:1180px;
      --trans:180ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 8% 8%, rgba(33,102,209,.10), transparent 28%),
        linear-gradient(180deg,#f8fbff 0%,#f4f7fb 48%,#ffffff 100%);
      line-height:1.75;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(216,164,65,.28)}
    .container{width:min(var(--container), calc(100% - 40px)); margin:0 auto}
    .skip-link{position:absolute;left:-999px;top:10px;background:#fff;color:var(--brand);padding:10px 14px;border-radius:10px;z-index:999}
    .skip-link:focus{left:12px;outline:3px solid rgba(216,164,65,.45)}
    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(255,255,255,.92);
      backdrop-filter:blur(16px);
      border-bottom:1px solid rgba(217,226,239,.9);
      box-shadow:0 8px 28px rgba(10,35,72,.05);
    }
    .topbar{
      background:linear-gradient(90deg,var(--brand-dark),#143f84);
      color:#dce8f7;
      font-size:13px;
    }
    .topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .topbar-links{display:flex;gap:18px;align-items:center;white-space:nowrap}
    .topbar-badge{display:inline-flex;align-items:center;gap:8px}
    .dot{width:7px;height:7px;border-radius:999px;background:var(--accent);box-shadow:0 0 0 4px rgba(216,164,65,.16)}
    .nav-wrap{height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .logo{display:flex;align-items:center;gap:12px;font-weight:900;color:var(--brand-dark);letter-spacing:.2px}
    .logo-mark{
      width:42px;height:42px;border-radius:14px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),#2878e6);
      color:#fff;box-shadow:0 12px 24px rgba(24,79,168,.24);
      font-weight:900;
    }
    .logo small{display:block;color:var(--muted);font-weight:600;font-size:12px;letter-spacing:0}
    .main-nav{display:flex;align-items:center;gap:8px}
    .nav-link{
      padding:11px 16px;border-radius:12px;color:#24344d;font-weight:700;font-size:15px;
      transition:background var(--trans), color var(--trans), transform var(--trans);
    }
    .nav-link:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px)}
    .nav-link.active{background:#e7f0ff;color:var(--brand);box-shadow:inset 0 0 0 1px rgba(24,79,168,.12)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .search-pill{
      display:flex;align-items:center;gap:8px;
      min-width:210px;padding:9px 12px;border:1px solid var(--line);
      background:#fff;border-radius:999px;color:var(--weak);
      transition:border var(--trans), box-shadow var(--trans);
    }
    .search-pill:focus-within{border-color:rgba(24,79,168,.5);box-shadow:0 0 0 4px rgba(24,79,168,.12)}
    .search-pill input{border:0;outline:0;width:100%;background:transparent;color:var(--ink);font-size:14px}
    .menu-btn{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--brand-dark)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:46px;padding:12px 18px;border-radius:14px;
      border:1px solid transparent;font-weight:800;line-height:1;
      transition:transform var(--trans), box-shadow var(--trans), background var(--trans), border var(--trans), color var(--trans);
    }
    .btn:focus-visible,.nav-link:focus-visible,.faq-trigger:focus-visible,.form-control:focus-visible{outline:3px solid rgba(216,164,65,.45);outline-offset:3px}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#2878e6);color:#fff;box-shadow:0 14px 28px rgba(24,79,168,.24)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(24,79,168,.32)}
    .btn-secondary{background:#fff;color:var(--brand);border-color:rgba(24,79,168,.18);box-shadow:var(--shadow-sm)}
    .btn-secondary:hover{background:var(--brand-soft);transform:translateY(-2px)}
    .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.22);color:#fff}
    .btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
    main{overflow:hidden}
    section{position:relative}
    .section-pad{padding:78px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:32px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      color:var(--brand);background:#e9f2ff;border:1px solid rgba(24,79,168,.12);
      font-weight:800;font-size:13px;
    }
    .section-title{font-size:clamp(28px,4vw,42px);line-height:1.22;font-weight:900;color:var(--brand-dark);letter-spacing:-.7px;margin:12px 0 10px}
    .section-desc{color:var(--muted);font-size:17px;max-width:720px;margin:0}
    .hero{
      padding:64px 0 54px;
      background:
        linear-gradient(135deg,rgba(10,35,72,.96),rgba(20,63,132,.94)),
        radial-gradient(circle at 85% 10%,rgba(216,164,65,.35),transparent 34%);
      color:#fff;
    }
    .hero-panel{
      border:1px solid rgba(255,255,255,.18);
      border-radius:32px;
      background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.06));
      box-shadow:0 30px 90px rgba(0,0,0,.24);
      overflow:hidden;
    }
    .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:0}
    .hero-copy{padding:54px}
    .hero h1{font-size:clamp(34px,5vw,62px);line-height:1.08;font-weight:950;letter-spacing:-1.6px;margin:16px 0 18px}
    .hero p{font-size:18px;color:#dbe7f7;margin:0 0 26px;max-width:720px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 28px}
    .rights{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:8px}
    .rights .badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.13);
      border:1px solid rgba(255,255,255,.17);color:#edf5ff;font-weight:750;font-size:14px;
    }
    .hero-note{display:flex;gap:12px;align-items:flex-start;color:#bfcde0;font-size:14px;max-width:660px}
    .hero-stage{
      padding:34px;display:flex;align-items:stretch;
      background:linear-gradient(135deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
      border-left:1px solid rgba(255,255,255,.14);
    }
    .apply-card{
      width:100%;border-radius:26px;background:#fff;color:var(--ink);
      padding:28px;box-shadow:var(--shadow-strong);
      align-self:center;
    }
    .apply-card h2{font-size:24px;font-weight:900;color:var(--brand-dark);margin:0 0 14px}
    .qualification{display:grid;gap:12px;margin:20px 0}
    .qualification li{list-style:none;display:flex;gap:10px;align-items:flex-start;padding:12px;border-radius:14px;background:#f6f9fd;border:1px solid #e7eef8;color:#39475b}
    .qualification b{color:var(--brand)}
    .stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}
    .stat-box{padding:13px 10px;border-radius:16px;background:#f7f9fc;border:1px solid #e5edf7;text-align:center}
    .stat-box strong{display:block;color:var(--brand-dark);font-size:22px;line-height:1;font-weight:950}
    .stat-box span{color:var(--muted);font-size:12px}
    .feature-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:24px;align-items:stretch}
    .feature-lead{
      padding:34px;border-radius:var(--radius-lg);
      background:linear-gradient(180deg,#ffffff,#f4f8ff);
      border:1px solid var(--line);box-shadow:var(--shadow-sm);
    }
    .feature-lead .big-num{font-size:78px;line-height:1;font-weight:950;color:rgba(24,79,168,.13);letter-spacing:-4px}
    .feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .card{
      background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
      padding:24px;box-shadow:var(--shadow-sm);
      transition:transform var(--trans), box-shadow var(--trans), border var(--trans);
    }
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(24,79,168,.22)}
    .icon{
      width:46px;height:46px;border-radius:15px;
      display:grid;place-items:center;background:#eaf2ff;color:var(--brand);
      font-weight:950;margin-bottom:14px;
    }
    .card h3{font-size:20px;font-weight:900;color:var(--brand-dark);margin:0 0 8px}
    .card p{color:var(--muted);margin:0}
    .spec-wrap{
      display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start;
    }
    .spec-table{
      overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--line);
      background:#fff;box-shadow:var(--shadow-sm);
    }
    .spec-row{display:grid;grid-template-columns:160px 1fr;border-bottom:1px solid #e9eef6}
    .spec-row:last-child{border-bottom:0}
    .spec-row div{padding:16px 18px}
    .spec-row .label{background:#f5f8fd;color:var(--brand-dark);font-weight:850}
    .spec-row .value{color:#44536a}
    .category-rack{display:flex;gap:14px;overflow-x:auto;padding:4px 4px 14px;scrollbar-width:thin}
    .cat-card{
      min-width:210px;padding:20px;border-radius:20px;background:#fff;border:1px solid var(--line);
      box-shadow:var(--shadow-sm);transition:all var(--trans);
    }
    .cat-card:hover{transform:translateY(-3px);border-color:rgba(216,164,65,.5)}
    .cat-card strong{display:block;font-size:18px;color:var(--brand-dark);margin-bottom:8px}
    .cat-card span{color:var(--muted);font-size:14px}
    .scenario{
      background:#0b2449;color:#fff;
      padding:78px 0;
    }
    .scenario-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:30px;align-items:center}
    .scenario .section-title{color:#fff}
    .scenario .section-desc{color:#c7d5e7}
    .steps{display:grid;gap:14px}
    .step{
      display:grid;grid-template-columns:54px 1fr;gap:16px;padding:18px;border-radius:20px;
      background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
    }
    .step-num{width:42px;height:42px;border-radius:14px;background:rgba(216,164,65,.18);color:#ffd98a;display:grid;place-items:center;font-weight:950}
    .step h3{margin:0 0 5px;font-size:18px;font-weight:900}
    .step p{margin:0;color:#c7d5e7}
    .compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .plan{position:relative;padding:26px;border-radius:24px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
    .plan.recommend{border:2px solid rgba(216,164,65,.85);box-shadow:0 24px 60px rgba(216,164,65,.18);transform:translateY(-8px)}
    .tag-hot{position:absolute;right:18px;top:18px;padding:6px 10px;border-radius:999px;background:#fff3d8;color:#9a6500;font-size:12px;font-weight:900}
    .price{display:flex;align-items:flex-end;gap:6px;margin:12px 0 16px}
    .price strong{font-size:38px;line-height:1;color:var(--brand-dark);font-weight:950}
    .price span{color:var(--muted)}
    .plan ul{padding:0;margin:18px 0 22px;display:grid;gap:10px}
    .plan li{list-style:none;color:#46566d;display:flex;gap:9px}
    .plan li:before{content:"✓";color:var(--brand);font-weight:950}
    .news-zone{display:grid;grid-template-columns:1.25fr .75fr;gap:24px}
    .news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:10px;box-shadow:var(--shadow-sm)}
    .news-item{
      display:grid;grid-template-columns:110px 1fr auto;gap:18px;align-items:center;
      padding:18px;border-radius:18px;border-bottom:1px solid #edf2f8;
      transition:background var(--trans), transform var(--trans);
    }
    .news-item:last-child{border-bottom:0}
    .news-item:hover{background:#f5f8fd;transform:translateX(3px)}
    .news-date{font-weight:900;color:var(--brand);font-size:14px}
    .news-item h3{margin:0;font-size:18px;font-weight:900;color:var(--brand-dark)}
    .news-item p{margin:4px 0 0;color:var(--muted);font-size:14px}
    .arrow{color:var(--weak);font-weight:900}
    .recommend-box{
      background:linear-gradient(180deg,#173f82,#0b2449);color:#fff;border-radius:var(--radius-lg);
      padding:28px;box-shadow:var(--shadow);min-height:100%;
    }
    .recommend-box p{color:#d1dded}
    .mini-list{display:grid;gap:12px;margin-top:20px}
    .mini-list a{display:flex;justify-content:space-between;gap:16px;padding:14px;border-radius:16px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.13)}
    .mini-list a:hover{background:rgba(255,255,255,.15)}
    .faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:28px}
    .faq-list{display:grid;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
    .faq-trigger{
      width:100%;display:flex;justify-content:space-between;gap:16px;align-items:center;
      padding:19px 22px;border:0;background:#fff;text-align:left;font-weight:900;color:var(--brand-dark);
    }
    .faq-answer{padding:0 22px 20px;color:var(--muted);display:block}
    .apply-section{padding:80px 0 92px;background:linear-gradient(180deg,#f5f8fc,#fff)}
    .apply-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:28px;align-items:stretch}
    .form-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:30px;box-shadow:var(--shadow)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:7px}
    .field.full{grid-column:1/-1}
    .field label{font-weight:850;color:var(--brand-dark);font-size:14px}
    .form-control{
      width:100%;border:1px solid var(--line);background:#f9fbfe;color:var(--ink);
      border-radius:14px;padding:13px 14px;outline:0;transition:border var(--trans), box-shadow var(--trans), background var(--trans);
    }
    .form-control:focus{border-color:rgba(24,79,168,.55);box-shadow:0 0 0 4px rgba(24,79,168,.1);background:#fff}
    textarea.form-control{min-height:118px;resize:vertical}
    .hint{font-size:13px;color:var(--weak);margin-top:12px}
    .contact-card{border-radius:28px;background:linear-gradient(135deg,var(--brand-dark),#174a9b);color:#fff;padding:34px;box-shadow:var(--shadow-strong)}
    .contact-card h2{font-size:32px;line-height:1.25;font-weight:950;margin:0 0 14px}
    .contact-card p{color:#d5e2f3;margin:0 0 20px}
    .contact-lines{display:grid;gap:12px;margin:22px 0}
    .contact-lines div{padding:14px;border-radius:16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14)}
    .site-footer{background:#071b38;color:#c9d6e7;padding:54px 0 26px}
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr .85fr;gap:28px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12)}
    .footer-logo{display:flex;align-items:center;gap:12px;color:#fff;font-weight:950;font-size:20px;margin-bottom:14px}
    .footer-logo .logo-mark{box-shadow:none}
    .footer-title{color:#fff;font-weight:900;margin-bottom:12px}
    .footer-links{display:grid;gap:10px}
    .footer-links a{color:#c9d6e7;transition:color var(--trans), transform var(--trans)}
    .footer-links a:hover{color:#fff;transform:translateX(3px)}
    .copyright{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;padding-top:22px;color:#91a2b8;font-size:14px}
    @media (max-width:1024px){
      .search-pill{display:none}
      .hero-grid,.feature-layout,.spec-wrap,.scenario-grid,.faq-grid,.apply-grid{grid-template-columns:1fr}
      .hero-stage{border-left:0;border-top:1px solid rgba(255,255,255,.14)}
      .compare-grid{grid-template-columns:1fr}
      .plan.recommend{transform:none}
      .news-zone{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .topbar-inner{height:auto;padding:8px 0;align-items:flex-start;flex-direction:column;gap:6px}
      .nav-wrap{height:66px}
      .menu-btn{display:grid;place-items:center}
      .main-nav{
        position:absolute;left:14px;right:14px;top:108px;
        display:none;flex-direction:column;align-items:stretch;padding:12px;
        background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);
      }
      .main-nav.open{display:flex}
      .nav-link{width:100%;padding:13px 14px}
      .nav-actions .btn{display:none}
      .hero{padding:34px 0}
      .hero-copy{padding:30px 22px}
      .hero-stage{padding:22px}
      .rights{gap:8px}
      .stat-strip,.feature-grid,.form-grid{grid-template-columns:1fr}
      .section-pad{padding:58px 0}
      .section-head{display:block}
      .news-item{grid-template-columns:1fr;gap:8px}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .logo small{display:none}
      .logo-mark{width:38px;height:38px}
      .hero h1{font-size:33px}
      .hero-actions .btn{width:100%}
      .apply-card{padding:22px}
      .spec-row{grid-template-columns:1fr}
      .spec-row div{padding:13px 15px}
      .cat-card{min-width:180px}
      .contact-card h2{font-size:26px}
      .copyright{display:block}
    }