/* roulang page: index */
:root{
      --brand:#12b8a6;
      --brand-dark:#0e8179;
      --accent:#ffb547;
      --ink:#10202b;
      --muted:#5e7180;
      --soft:#f4fbf9;
      --surface:#ffffff;
      --line:rgba(16,32,43,.10);
      --shadow:0 22px 60px rgba(8,35,45,.12);
      --shadow-sm:0 12px 32px rgba(8,35,45,.08);
      --radius:26px;
      --radius-sm:18px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 8% 0%, rgba(20,184,166,.16), transparent 30%),
        radial-gradient(circle at 92% 18%, rgba(255,181,71,.18), transparent 28%),
        linear-gradient(180deg,#f7fffd 0%,#ffffff 36%,#f7fbfa 100%);
      line-height:1.7;
      overflow-x:hidden;
    }
    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(20,184,166,.22)}
    .site-container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .glass-header{
      position:fixed;top:16px;left:0;right:0;z-index:60;
      transition:.28s ease;
    }
    .nav-shell{
      width:min(var(--container),calc(100% - 32px));
      margin-inline:auto;
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      padding:12px 14px 12px 18px;
      border:1px solid rgba(255,255,255,.55);
      background:rgba(255,255,255,.62);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      box-shadow:0 14px 44px rgba(8,35,45,.10);
      border-radius:999px;
    }
    .glass-header.is-scrolled{top:8px}
    .glass-header.is-scrolled .nav-shell{
      background:rgba(255,255,255,.92);
      border-color:rgba(16,32,43,.08);
      box-shadow:0 18px 50px rgba(8,35,45,.12);
    }
    .brand-logo{
      display:inline-flex;align-items:center;gap:10px;font-weight:900;letter-spacing:-.02em;
      white-space:nowrap;
    }
    .brand-mark{
      width:38px;height:38px;border-radius:14px;
      display:grid;place-items:center;
      color:#fff;font-weight:900;
      background:conic-gradient(from 180deg,var(--brand),#6ee7d8,var(--accent),var(--brand));
      box-shadow:0 10px 24px rgba(20,184,166,.28);
    }
    .nav-links{display:flex;align-items:center;gap:8px}
    .nav-link{
      padding:10px 16px;border-radius:999px;font-size:14px;font-weight:700;color:rgba(16,32,43,.74);
      transition:.22s ease;
    }
    .nav-link:hover,.nav-link.active{background:rgba(20,184,166,.12);color:var(--brand-dark)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .mini-search{
      display:flex;align-items:center;gap:8px;
      min-width:210px;padding:9px 13px;border-radius:999px;
      background:rgba(244,251,249,.88);border:1px solid rgba(16,32,43,.08);
      color:var(--muted);font-size:13px;
    }
    .mini-search input{
      width:100%;border:0;outline:0;background:transparent;color:var(--ink);
    }
    .mini-search input::placeholder{color:#82929c}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:44px;padding:0 18px;border-radius:999px;
      font-weight:800;letter-spacing:.01em;transition:.22s ease;
      border:1px solid transparent;white-space:nowrap;
    }
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-dark));
      box-shadow:0 14px 28px rgba(20,184,166,.25);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(20,184,166,.32)}
    .btn-secondary{
      color:var(--ink);background:rgba(255,255,255,.75);border-color:rgba(16,32,43,.10);
    }
    .btn-secondary:hover{background:#fff;transform:translateY(-2px);box-shadow:var(--shadow-sm)}
    .btn-ghost{color:var(--brand-dark);background:rgba(20,184,166,.10)}
    .btn-ghost:hover{background:rgba(20,184,166,.16)}
    .focusable:focus,.btn:focus,.nav-link:focus,input:focus{
      outline:3px solid rgba(20,184,166,.28);
      outline-offset:3px;
    }
    .mobile-toggle{
      display:none;width:44px;height:44px;border-radius:999px;background:rgba(20,184,166,.10);color:var(--brand-dark);
      align-items:center;justify-content:center;
    }
    .mobile-panel{
      display:none;position:fixed;top:82px;left:16px;right:16px;z-index:55;
      border:1px solid rgba(16,32,43,.10);border-radius:24px;background:rgba(255,255,255,.94);
      backdrop-filter:blur(18px);box-shadow:var(--shadow);padding:14px;
    }
    .mobile-panel.open{display:block}
    .mobile-panel a{display:block;padding:13px 14px;border-radius:16px;font-weight:800}
    .mobile-panel a:hover{background:rgba(20,184,166,.10);color:var(--brand-dark)}
    .hero{
      min-height:760px;
      padding:138px 0 80px;
      position:relative;
      overflow:hidden;
    }
    .hero:before{
      content:"";position:absolute;inset:0;
      background:
        linear-gradient(120deg,rgba(10,45,54,.92),rgba(12,77,72,.78) 45%,rgba(20,184,166,.34)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='720' viewBox='0 0 1200 720'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0' x2='1'%3E%3Cstop stop-color='%230f766e'/%3E%3Cstop offset='1' stop-color='%23ffb547'/%3E%3C/linearGradient%3E%3C/defs%3E%3Crect width='1200' height='720' fill='%23eafffb'/%3E%3Ccircle cx='1030' cy='160' r='240' fill='%23ccfbf1'/%3E%3Ccircle cx='180' cy='580' r='210' fill='%23fff0cc'/%3E%3Cg opacity='.45' stroke='url(/%23g)' stroke-width='2'%3E%3Cpath d='M60 130 C230 40 350 230 520 136 S820 80 1110 180' fill='none'/%3E%3Cpath d='M90 500 C270 430 380 560 530 480 S820 390 1100 470' fill='none'/%3E%3C/g%3E%3Cg fill='%2314b8a6' opacity='.22'%3E%3Crect x='210' y='160' width='180' height='110' rx='28'/%3E%3Crect x='730' y='240' width='230' height='136' rx='32'/%3E%3Crect x='470' y='410' width='260' height='128' rx='34'/%3E%3C/g%3E%3C/svg%3E") center/cover no-repeat;
      z-index:-2;
    }
    .hero:after{
      content:"";position:absolute;inset:auto 0 0 0;height:160px;
      background:linear-gradient(180deg,transparent,#fff);
      z-index:-1;
    }
    .hero-layout{
      display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:42px;align-items:end;
    }
    .eyebrow{
      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,.22);
      color:#e9fffb;font-size:13px;font-weight:800;
      backdrop-filter:blur(12px);
    }
    .hero h1{
      margin:22px 0 18px;
      color:#fff;font-size:clamp(42px,6vw,76px);line-height:1.04;letter-spacing:-.06em;font-weight:950;
      max-width:760px;
    }
    .hero-intro{
      color:rgba(255,255,255,.84);font-size:18px;line-height:1.9;max-width:710px;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
    .hero-data{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
    .data-pill{
      padding:12px 15px;border-radius:18px;
      color:#fff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
      backdrop-filter:blur(12px);
    }
    .data-pill strong{display:block;font-size:20px;line-height:1;font-weight:950}
    .data-pill span{font-size:13px;color:rgba(255,255,255,.74)}
    .demo-stage{
      position:relative;border-radius:34px;padding:18px;
      background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.22);
      box-shadow:0 28px 80px rgba(0,0,0,.24);
      backdrop-filter:blur(18px);
    }
    .demo-inner{
      border-radius:26px;background:#f8fffd;overflow:hidden;border:1px solid rgba(255,255,255,.7);
    }
    .demo-top{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid rgba(16,32,43,.08)}
    .dots{display:flex;gap:6px}.dots i{width:10px;height:10px;border-radius:50%;background:#d8e5e2}.dots i:nth-child(1){background:#ff7b7b}.dots i:nth-child(2){background:#ffcb65}.dots i:nth-child(3){background:#49d29f}
    .demo-body{padding:18px}
    .search-card{
      padding:16px;border-radius:22px;background:linear-gradient(135deg,#ffffff,#eefdf9);
      border:1px solid rgba(16,32,43,.08);
    }
    .search-line{height:46px;border-radius:16px;background:#fff;border:1px solid rgba(16,32,43,.08);display:flex;align-items:center;padding:0 14px;color:#81929a}
    .demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
    .demo-tile{padding:14px;border-radius:18px;background:#fff;border:1px solid rgba(16,32,43,.08);box-shadow:0 10px 22px rgba(8,35,45,.05)}
    .demo-tile b{display:block;font-size:15px;margin-bottom:4px}
    .demo-tile small{color:var(--muted)}
    .progress{height:8px;border-radius:999px;background:#e6f2ef;overflow:hidden;margin-top:12px}
    .progress span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent))}
    main section{position:relative}
    .section{padding:82px 0}
    .section-tight{padding:58px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
    .section-kicker{color:var(--brand-dark);font-weight:900;font-size:13px;letter-spacing:.12em}
    .section-title{font-size:clamp(28px,4vw,46px);line-height:1.14;letter-spacing:-.04em;font-weight:950;margin:6px 0 0}
    .section-desc{max-width:600px;color:var(--muted);font-size:16px;line-height:1.9}
    .badge{
      display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:6px 10px;
      font-size:12px;font-weight:900;color:var(--brand-dark);background:rgba(20,184,166,.10);
    }
    .card{
      background:rgba(255,255,255,.86);border:1px solid rgba(16,32,43,.08);
      border-radius:var(--radius);box-shadow:var(--shadow-sm);
      transition:.24s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(20,184,166,.22)}
    .entry-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .entry-main{padding:28px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .entry-item{
      min-height:154px;padding:22px;border-radius:24px;background:#fff;border:1px solid rgba(16,32,43,.08);
      transition:.22s ease;
    }
    .entry-item:hover{background:#f5fffc;transform:translateY(-3px);border-color:rgba(20,184,166,.24)}
    .icon-box{
      width:46px;height:46px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(20,184,166,.16),rgba(255,181,71,.18));
      color:var(--brand-dark);font-weight:950;margin-bottom:14px;
    }
    .entry-item h3,.step-card h3,.assure-card h3,.price-card h3{font-size:19px;font-weight:950;margin:0 0 8px}
    .entry-item p,.step-card p,.assure-card p,.price-card p{color:var(--muted);font-size:14px;line-height:1.8}
    .entry-side{padding:28px;background:linear-gradient(160deg,#10202b,#0f766e);color:#fff;overflow:hidden}
    .entry-side .section-desc{color:rgba(255,255,255,.74)}
    .rank-list{margin-top:22px;display:grid;gap:12px}
    .rank-item{display:flex;align-items:center;gap:12px;padding:14px;border-radius:18px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.13)}
    .rank-num{width:30px;height:30px;border-radius:10px;background:rgba(255,181,71,.95);color:#3b2a08;display:grid;place-items:center;font-weight:950}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step-card{padding:24px}
    .step-num{font-size:38px;line-height:1;font-weight:950;color:rgba(20,184,166,.24);margin-bottom:12px}
    .timeline{
      display:grid;grid-template-columns:.85fr 1.15fr;gap:24px;align-items:stretch;
      padding:28px;background:#fff;border-radius:34px;border:1px solid rgba(16,32,43,.08);box-shadow:var(--shadow-sm);
    }
    .milestone-panel{
      border-radius:28px;padding:28px;color:#fff;background:
        radial-gradient(circle at 80% 10%,rgba(255,181,71,.5),transparent 34%),
        linear-gradient(145deg,#0f766e,#10202b);
      min-height:360px;display:flex;flex-direction:column;justify-content:space-between;
    }
    .milestone-panel strong{font-size:54px;line-height:1;font-weight:950}
    .milestone-list{display:grid;gap:12px}
    .milestone-item{display:grid;grid-template-columns:90px 1fr;gap:16px;padding:18px;border-radius:22px;background:#f7fbfa;border:1px solid rgba(16,32,43,.07)}
    .milestone-item time{font-weight:950;color:var(--brand-dark)}
    .milestone-item p{color:var(--muted);font-size:14px;margin-top:4px}
    .news-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:22px}
    .news-list{background:#fff;border-radius:30px;border:1px solid rgba(16,32,43,.08);overflow:hidden;box-shadow:var(--shadow-sm)}
    .news-row{
      display:grid;grid-template-columns:126px 1fr auto;gap:18px;align-items:center;
      padding:20px 22px;border-bottom:1px solid rgba(16,32,43,.07);transition:.22s ease;
    }
    .news-row:last-child{border-bottom:0}
    .news-row:hover{background:#f5fffc}
    .news-date{border-radius:18px;background:#f4fbf9;padding:12px;text-align:center;color:var(--brand-dark);font-weight:950}
    .news-date span{display:block;font-size:12px;color:var(--muted);font-weight:800}
    .news-row h3{font-size:18px;font-weight:950;margin-bottom:4px}
    .news-row p{color:var(--muted);font-size:14px;line-height:1.7}
    .arrow{width:40px;height:40px;border-radius:999px;background:rgba(20,184,166,.10);display:grid;place-items:center;color:var(--brand-dark);font-weight:950}
    .recommend{padding:24px;background:linear-gradient(180deg,#ffffff,#effdfa)}
    .recommend-card{padding:18px;border-radius:22px;background:#fff;border:1px solid rgba(16,32,43,.08);margin-top:14px}
    .recommend-card h3{font-size:18px;font-weight:950;margin:10px 0 6px}
    .recommend-card p{font-size:14px;color:var(--muted)}
    .assurance-strip{
      display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:22px;
    }
    .assure-chip{
      display:flex;align-items:center;gap:12px;padding:18px;border-radius:22px;
      background:#fff;border:1px solid rgba(16,32,43,.08);box-shadow:0 8px 22px rgba(8,35,45,.05);
    }
    .assure-chip i{font-style:normal;width:38px;height:38px;border-radius:14px;background:rgba(20,184,166,.12);display:grid;place-items:center;color:var(--brand-dark);font-weight:950}
    .assure-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .assure-card{padding:26px}
    .app-zone{
      border-radius:38px;padding:34px;background:
        radial-gradient(circle at 82% 18%,rgba(255,181,71,.26),transparent 26%),
        linear-gradient(135deg,#10202b,#0f766e 56%,#14b8a6);
      color:#fff;overflow:hidden;
    }
    .app-layout{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
    .app-zone .section-desc{color:rgba(255,255,255,.76)}
    .app-card{
      background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);border-radius:30px;padding:22px;
      backdrop-filter:blur(12px);
    }
    .price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:20px}
    .price-card{
      padding:20px;border-radius:24px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);
    }
    .price-card strong{display:block;font-size:28px;font-weight:950;margin:8px 0}
    .price-card p{color:rgba(255,255,255,.72)}
    .device-panel{
      min-height:420px;border-radius:34px;background:#f9fffd;color:var(--ink);padding:18px;box-shadow:0 26px 70px rgba(0,0,0,.18);
    }
    .device-head{display:flex;justify-content:space-between;align-items:center;padding:10px 8px 16px}
    .device-list{display:grid;gap:12px}
    .device-item{display:flex;align-items:center;gap:12px;padding:14px;border-radius:20px;background:#fff;border:1px solid rgba(16,32,43,.08)}
    .device-item .bar{height:8px;border-radius:999px;background:#e5f4f1;flex:1;overflow:hidden}
    .device-item .bar span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--accent));border-radius:999px}
    .faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px}
    .faq-list{display:grid;gap:12px}
    .faq-item{padding:22px;border-radius:24px;background:#fff;border:1px solid rgba(16,32,43,.08);box-shadow:0 8px 22px rgba(8,35,45,.05)}
    .faq-item h3{font-size:18px;font-weight:950;margin-bottom:8px}
    .faq-item p{color:var(--muted);font-size:15px;line-height:1.9}
    .cta-card{
      padding:30px;border-radius:32px;background:#10202b;color:#fff;position:sticky;top:110px;
    }
    .cta-card p{color:rgba(255,255,255,.74);margin:12px 0 22px}
    .footer{
      padding:50px 0 30px;background:#09181d;color:rgba(255,255,255,.72);
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:start}
    .footer .brand-logo{color:#fff}
    .footer p{margin-top:14px;max-width:620px}
    .footer-links{display:flex;justify-content:flex-end;gap:12px;flex-wrap:wrap}
    .footer-links a{padding:10px 12px;border-radius:999px;background:rgba(255,255,255,.06);transition:.22s ease}
    .footer-links a:hover{background:rgba(20,184,166,.18);color:#fff}
    .copyright{margin-top:30px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);font-size:13px;color:rgba(255,255,255,.52)}
    @media (max-width:1024px){
      .mini-search{display:none}
      .hero-layout,.entry-wrap,.timeline,.news-layout,.app-layout,.faq-grid{grid-template-columns:1fr}
      .steps,.assurance-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
      .assure-grid,.price-grid{grid-template-columns:1fr}
      .hero{min-height:auto}
      .demo-stage{max-width:620px}
    }
    @media (max-width:768px){
      .nav-links,.nav-actions .btn{display:none}
      .mobile-toggle{display:flex}
      .nav-shell{padding:10px 12px;border-radius:26px}
      .hero{padding:118px 0 62px}
      .hero h1{font-size:42px}
      .hero-intro{font-size:16px}
      .section{padding:60px 0}
      .section-head{display:block}
      .section-desc{margin-top:12px}
      .entry-main,.steps,.assurance-strip{grid-template-columns:1fr}
      .news-row{grid-template-columns:1fr;gap:10px}
      .news-date{text-align:left}
      .arrow{display:none}
      .milestone-item{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:520px){
      .site-container{width:min(100% - 28px,var(--container))}
      .brand-logo span{font-size:15px}
      .brand-mark{width:34px;height:34px}
      .hero-actions .btn{width:100%}
      .demo-grid{grid-template-columns:1fr}
      .entry-main,.entry-side,.timeline,.app-zone{padding:18px}
      .section-title{font-size:30px}
      .price-grid{grid-template-columns:1fr}
      .mobile-panel{top:74px}
    }