/* roulang page: index */
:root{
      --bg:#f7f5ef;
      --surface:#ffffff;
      --surface-2:#fbfaf7;
      --ink:#151515;
      --muted:#6b665d;
      --weak:#948d80;
      --line:#e7e0d2;
      --primary:#111111;
      --accent:#c96f32;
      --accent-2:#f2c46d;
      --green:#2f7a5f;
      --red:#b84a3a;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --shadow:0 20px 60px rgba(29,24,17,.10);
      --shadow-soft:0 12px 34px rgba(29,24,17,.07);
      --container:1180px;
      --ease:all .22s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 10% 0%, rgba(242,196,109,.28), transparent 36%),
        radial-gradient(circle at 90% 10%, rgba(201,111,50,.16), transparent 32%),
        var(--bg);
      line-height:1.75;
      letter-spacing:.01em;
      padding-bottom:76px;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--accent)}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(201,111,50,.34);outline-offset:3px;border-radius:12px}

    .site-container{width:min(var(--container), calc(100% - 40px));margin-inline:auto}
    .section{padding:76px 0}
    .section.compact{padding:54px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      color:var(--accent);font-size:13px;font-weight:800;
      letter-spacing:.12em;text-transform:uppercase;
      margin-bottom:12px;
    }
    .eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}
    .section-head{
      display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:30px;
    }
    .section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.12;margin:0;font-weight:900;letter-spacing:-.04em}
    .section-head p{max-width:560px;margin:0;color:var(--muted);font-size:16px}

    .top-header{
      position:sticky;top:0;z-index:50;background:rgba(247,245,239,.82);
      backdrop-filter:blur(18px);border-bottom:1px solid rgba(231,224,210,.8);
    }
    .brand-row{
      min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:18px;
    }
    .logo{
      display:flex;align-items:center;gap:12px;font-weight:950;letter-spacing:-.03em;font-size:22px;color:var(--ink);
    }
    .logo-mark{
      width:40px;height:40px;border-radius:14px;background:#111;color:#fff;
      display:grid;place-items:center;font-weight:900;box-shadow:0 12px 26px rgba(0,0,0,.16);
    }
    .header-actions{display:flex;align-items:center;gap:12px}
    .search-pill{
      width:300px;display:flex;align-items:center;gap:10px;background:var(--surface);
      border:1px solid var(--line);border-radius:999px;padding:10px 14px;box-shadow:var(--shadow-soft);
    }
    .search-pill input{border:0;box-shadow:none;background:transparent;margin:0;height:auto;padding:0;color:var(--ink)}
    .search-pill input:focus{box-shadow:none;background:transparent}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:10px 12px;font-weight:800;
    }
    .channel-row{
      border-top:1px solid rgba(231,224,210,.7);
      overflow-x:auto;scrollbar-width:none;
    }
    .channel-row::-webkit-scrollbar{display:none}
    .channel-nav{display:flex;align-items:center;gap:10px;min-height:50px;white-space:nowrap}
    .channel-link{
      display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;
      color:var(--muted);font-weight:800;font-size:14px;
    }
    .channel-link:hover,.channel-link.active{background:#111;color:#fff}
    .quick-cta{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;
      padding:11px 18px;background:var(--accent);color:#fff;font-weight:900;box-shadow:0 12px 24px rgba(201,111,50,.22);
    }
    .quick-cta:hover{color:#fff;transform:translateY(-1px);background:#ad5c27}

    .hero{padding:34px 0 78px}
    .flash-strip{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      background:#111;color:#fff;border-radius:999px;padding:10px 12px 10px 20px;margin-bottom:22px;
      box-shadow:0 18px 54px rgba(0,0,0,.16);
    }
    .flash-left{display:flex;align-items:center;gap:12px;font-weight:900}
    .flash-badge{background:var(--accent-2);color:#111;border-radius:999px;padding:6px 10px;font-size:13px}
    .countdown{display:flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums}
    .timebox{background:#fff;color:#111;border-radius:10px;padding:5px 8px;font-weight:900;min-width:36px;text-align:center}
    .hero-stage{
      position:relative;overflow:hidden;border-radius:38px;background:
        linear-gradient(135deg, rgba(17,17,17,.97), rgba(40,35,28,.94)),
        #111;
      color:#fff;padding:42px;box-shadow:var(--shadow);
    }
    .hero-stage::after{
      content:"";position:absolute;inset:auto -120px -180px auto;width:420px;height:420px;border-radius:50%;
      background:radial-gradient(circle, rgba(242,196,109,.38), transparent 66%);
    }
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:stretch}
    .hero-copy{display:flex;flex-direction:column;justify-content:center;min-height:430px}
    .hero h1{font-size:clamp(42px,7vw,76px);line-height:.98;margin:0 0 18px;font-weight:950;letter-spacing:-.07em}
    .hero-desc{font-size:18px;color:rgba(255,255,255,.78);max-width:720px;margin:0 0 26px}
    .hero-actions{display:flex;align-items:center;gap:13px;flex-wrap:wrap;margin-bottom:28px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:999px;
      padding:14px 22px;font-weight:900;border:1px solid transparent;transition:var(--ease);line-height:1.2;
    }
    .btn-primary{background:var(--accent);color:#fff;box-shadow:0 16px 34px rgba(201,111,50,.28)}
    .btn-primary:hover{background:#ad5c27;color:#fff;transform:translateY(-2px)}
    .btn-dark{background:#111;color:#fff}
    .btn-dark:hover{background:#333;color:#fff;transform:translateY(-2px)}
    .btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.18)}
    .btn-ghost:hover{background:#fff;color:#111;transform:translateY(-2px)}
    .data-points{display:flex;gap:12px;flex-wrap:wrap}
    .data-pill{
      border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.07);
      border-radius:18px;padding:12px 14px;min-width:130px;
    }
    .data-pill strong{display:block;font-size:22px;line-height:1;color:#fff}
    .data-pill span{font-size:13px;color:rgba(255,255,255,.64)}
    .deal-card{
      align-self:center;background:rgba(255,255,255,.96);color:#111;border-radius:30px;padding:22px;
      box-shadow:0 30px 70px rgba(0,0,0,.24);border:1px solid rgba(255,255,255,.5);
    }
    .deal-cover{
      height:220px;border-radius:24px;background:
        linear-gradient(135deg, rgba(201,111,50,.92), rgba(242,196,109,.82)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='600' height='360' viewBox='0 0 600 360'%3E%3Cg fill='none' stroke='rgba(255,255,255,.42)' stroke-width='2'%3E%3Cpath d='M80 70h440v220H80z'/%3E%3Cpath d='M120 108h150M120 142h240M120 176h190M120 210h280'/%3E%3Ccircle cx='455' cy='180' r='46'/%3E%3Cpath d='M440 156l38 24-38 24z' fill='rgba(255,255,255,.35)'/%3E%3C/g%3E%3C/svg%3E");
      background-size:cover;background-position:center;position:relative;overflow:hidden;margin-bottom:18px;
    }
    .deal-cover .tag{
      position:absolute;top:16px;left:16px;background:#111;color:#fff;border-radius:999px;padding:7px 11px;font-size:12px;font-weight:900;
    }
    .deal-card h3{font-size:25px;line-height:1.18;margin:0 0 8px;font-weight:950;letter-spacing:-.04em}
    .deal-card p{color:var(--muted);margin:0 0 16px}
    .progress-wrap{height:10px;border-radius:999px;background:#eee4d4;overflow:hidden;margin-bottom:10px}
    .progress-bar{height:100%;width:78%;background:linear-gradient(90deg,var(--accent),var(--accent-2));border-radius:999px}
    .deal-meta{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:13px;margin-bottom:16px}

    .category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .category-card{
      background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
      padding:22px;box-shadow:var(--shadow-soft);min-height:150px;transition:var(--ease);
    }
    .category-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .category-icon{width:42px;height:42px;border-radius:15px;background:#111;color:#fff;display:grid;place-items:center;font-weight:900;margin-bottom:16px}
    .category-card h3{margin:0 0 8px;font-size:20px;font-weight:950}
    .category-card p{margin:0;color:var(--muted);font-size:14px}

    .resource-wrap{display:grid;grid-template-columns:1.5fr .8fr;gap:22px;align-items:start}
    .resource-list{display:grid;gap:12px}
    .resource-item{
      display:grid;grid-template-columns:88px 1fr auto;gap:18px;align-items:center;
      background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:14px;box-shadow:var(--shadow-soft);transition:var(--ease);
    }
    .resource-item:hover{transform:translateX(4px);border-color:rgba(201,111,50,.35)}
    .poster{
      height:76px;border-radius:16px;background:linear-gradient(135deg,#25221f,#c96f32);display:grid;place-items:center;color:#fff;font-weight:950;
    }
    .resource-item h3{margin:0 0 4px;font-size:18px;font-weight:950}
    .resource-item p{margin:0;color:var(--muted);font-size:14px}
    .mini-badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
    .badge{
      display:inline-flex;align-items:center;border-radius:999px;background:#f3eadb;color:#7a4b2e;
      padding:4px 9px;font-size:12px;font-weight:850;
    }
    .side-panel{
      background:#111;color:#fff;border-radius:28px;padding:26px;box-shadow:var(--shadow);position:sticky;top:146px;
    }
    .side-panel h3{font-size:28px;line-height:1.08;margin:0 0 10px;font-weight:950;letter-spacing:-.04em}
    .side-panel p{color:rgba(255,255,255,.72);margin:0 0 18px}
    .rank-list{margin:0;padding:0;list-style:none;display:grid;gap:12px}
    .rank-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid rgba(255,255,255,.12);padding-top:12px}
    .rank-list span:first-child{font-weight:850}
    .rank-list span:last-child{color:var(--accent-2);font-size:13px}

    .proof-strip{
      background:var(--surface);border:1px solid var(--line);border-radius:30px;padding:22px;
      display:grid;grid-template-columns:repeat(4,1fr);gap:18px;box-shadow:var(--shadow-soft);
    }
    .proof-item{padding:8px 12px;border-right:1px solid var(--line)}
    .proof-item:last-child{border-right:0}
    .proof-item strong{display:block;font-size:34px;line-height:1;color:#111;font-weight:950;letter-spacing:-.04em}
    .proof-item span{display:block;color:var(--muted);font-size:14px;margin-top:8px}

    .news-layout{display:grid;grid-template-columns:1.35fr .75fr;gap:22px;align-items:start}
    .news-list{
      background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:10px 22px;box-shadow:var(--shadow-soft);
    }
    .news-link{
      display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 0;border-bottom:1px solid var(--line);
    }
    .news-link:last-child{border-bottom:0}
    .news-link strong{font-size:17px;font-weight:900}
    .news-link small{color:var(--weak);white-space:nowrap}
    .recommend-box{
      border-radius:28px;background:linear-gradient(180deg,#fff,#f4ede1);border:1px solid var(--line);padding:24px;box-shadow:var(--shadow-soft);
    }
    .recommend-box h3{margin:0 0 12px;font-size:24px;font-weight:950}
    .topic-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
    .topic-tags a{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:850;font-size:13px}
    .topic-tags a:hover{background:#111;color:#fff;border-color:#111}

    .download-card{
      background:#111;color:#fff;border-radius:34px;padding:34px;display:grid;grid-template-columns:1fr .9fr;gap:30px;align-items:center;box-shadow:var(--shadow);
    }
    .download-card h2{font-size:clamp(30px,4vw,48px);line-height:1.08;margin:0 0 14px;font-weight:950;letter-spacing:-.05em}
    .download-card p{color:rgba(255,255,255,.74);margin:0 0 20px}
    .steps{display:grid;gap:12px}
    .step{
      background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:15px;display:flex;gap:13px;align-items:flex-start;
    }
    .step b{width:30px;height:30px;border-radius:50%;background:var(--accent-2);color:#111;display:grid;place-items:center;flex:0 0 auto}
    .step span{color:rgba(255,255,255,.76)}

    .updates{display:grid;grid-template-columns:.85fr 1.15fr;gap:24px}
    .changelog{
      background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow-soft);
    }
    .change-item{display:grid;grid-template-columns:92px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
    .change-item:last-child{border-bottom:0}
    .change-item time{color:var(--accent);font-weight:950}
    .change-item strong{display:block;margin-bottom:4px;font-weight:950}
    .change-item p{margin:0;color:var(--muted);font-size:14px}

    .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .faq-card{
      background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow-soft);
    }
    .faq-card h3{font-size:18px;margin:0 0 8px;font-weight:950}
    .faq-card p{margin:0;color:var(--muted)}

    .lead-box{
      background:linear-gradient(135deg,#fff,#f5ecde);border:1px solid var(--line);border-radius:34px;
      padding:30px;display:grid;grid-template-columns:1fr .9fr;gap:24px;align-items:center;box-shadow:var(--shadow-soft);
    }
    .lead-box h2{font-size:clamp(30px,4vw,46px);line-height:1.08;margin:0 0 12px;font-weight:950;letter-spacing:-.05em}
    .lead-box p{margin:0;color:var(--muted)}
    .lead-form{display:grid;gap:12px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px}
    .lead-form label{font-weight:900;font-size:14px}
    .lead-form input,.lead-form textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fbfaf7;box-shadow:none;margin:0;padding:12px 14px;
    }
    .lead-form input:focus,.lead-form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(201,111,50,.10);background:#fff}

    .site-footer{background:#111;color:#fff;padding:48px 0 28px;margin-top:18px}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start}
    .footer-brand{font-size:24px;font-weight:950;margin-bottom:10px}
    .footer-grid p{color:rgba(255,255,255,.68);margin:0;max-width:650px}
    .footer-links{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap}
    .footer-links a{border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:9px 13px;color:rgba(255,255,255,.78);font-weight:850}
    .footer-links a:hover{background:#fff;color:#111}
    .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:20px;color:rgba(255,255,255,.52);font-size:13px}

    .fixed-bar{
      position:fixed;left:50%;bottom:16px;transform:translateX(-50%);z-index:60;
      width:min(760px, calc(100% - 28px));background:rgba(17,17,17,.92);backdrop-filter:blur(14px);
      color:#fff;border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:10px 12px 10px 20px;
      display:flex;align-items:center;justify-content:space-between;gap:12px;box-shadow:0 20px 50px rgba(0,0,0,.22);
    }
    .fixed-bar strong{font-weight:950}
    .fixed-bar span{color:rgba(255,255,255,.7);font-size:13px}

    @media (max-width:1024px){
      .hero-grid,.resource-wrap,.news-layout,.download-card,.updates,.lead-box{grid-template-columns:1fr}
      .hero-copy{min-height:auto}
      .side-panel{position:static}
      .category-grid{grid-template-columns:repeat(2,1fr)}
      .proof-strip{grid-template-columns:repeat(2,1fr)}
      .proof-item:nth-child(2){border-right:0}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:768px){
      body{padding-bottom:92px}
      .site-container{width:min(100% - 28px,var(--container))}
      .section{padding:54px 0}
      .brand-row{min-height:66px}
      .search-pill{display:none}
      .nav-toggle{display:inline-flex}
      .header-actions .quick-cta{display:none}
      .channel-row{display:none}
      .channel-row.open{display:block}
      .channel-nav{padding:10px 0}
      .flash-strip{border-radius:22px;align-items:flex-start;flex-direction:column}
      .hero-stage{padding:26px;border-radius:28px}
      .deal-cover{height:180px}
      .section-head{display:block}
      .section-head p{margin-top:10px}
      .resource-item{grid-template-columns:70px 1fr}
      .resource-item .btn{grid-column:1 / -1}
      .proof-strip{grid-template-columns:1fr}
      .proof-item{border-right:0;border-bottom:1px solid var(--line)}
      .proof-item:last-child{border-bottom:0}
      .faq-grid{grid-template-columns:1fr}
      .fixed-bar{border-radius:24px;align-items:flex-start;flex-direction:column}
    }
    @media (max-width:520px){
      .logo{font-size:18px}
      .logo-mark{width:36px;height:36px}
      .hero h1{font-size:39px}
      .category-grid{grid-template-columns:1fr}
      .data-pill{min-width:calc(50% - 8px)}
      .download-card,.lead-box{padding:24px;border-radius:26px}
      .news-link{align-items:flex-start;flex-direction:column;gap:4px}
      .change-item{grid-template-columns:1fr;gap:6px}
      .hero-actions .btn{width:100%}
    }