/* roulang page: index */
:root{
      --bg:#0b0714;
      --bg-2:#120b24;
      --panel:#181126;
      --panel-2:#211733;
      --card:#1b132b;
      --text:#f8f4ff;
      --muted:#b9aecb;
      --weak:#877b9b;
      --line:rgba(255,255,255,.11);
      --brand:#8b5cf6;
      --brand-2:#ff4ecd;
      --accent:#22d3ee;
      --warm:#ffd166;
      --success:#36d399;
      --danger:#ff6b8a;
      --radius-sm:12px;
      --radius:22px;
      --radius-lg:34px;
      --shadow:0 24px 70px rgba(0,0,0,.36);
      --shadow-soft:0 16px 40px rgba(9,5,20,.26);
      --container:1180px;
      --nav-h:76px;
      --ease:all .25s 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(--text);
      background:
        radial-gradient(circle at 10% 3%, rgba(139,92,246,.36), transparent 34%),
        radial-gradient(circle at 88% 10%, rgba(255,78,205,.22), transparent 30%),
        linear-gradient(180deg,#0b0714 0%,#100a1d 42%,#0d0a16 100%);
      line-height:1.75;
      overflow-x:hidden;
      padding-bottom:78px;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:#fff}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(139,92,246,.55);color:#fff}
    .container{max-width:var(--container);padding-left:22px;padding-right:22px}
    .site-header{
      position:sticky;
      top:0;
      z-index:999;
      min-height:var(--nav-h);
      background:rgba(12,7,23,.78);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(18px);
      box-shadow:0 10px 36px rgba(0,0,0,.2);
    }
    .navbar{padding:14px 0}
    .navbar-brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      color:#fff!important;
      font-weight:900;
      letter-spacing:.02em;
      font-size:1.15rem;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:15px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 12px 28px rgba(139,92,246,.36);
      position:relative;
      overflow:hidden;
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      inset:8px 11px;
      border-radius:50%;
      border:2px solid rgba(255,255,255,.8);
      border-left-color:transparent;
      transform:rotate(-18deg);
    }
    .nav-main{
      display:flex;
      align-items:center;
      gap:12px;
      flex-wrap:wrap;
    }
    .navbar-nav .nav-link{
      color:var(--muted);
      border-radius:999px;
      padding:10px 16px!important;
      font-weight:700;
      font-size:.95rem;
    }
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active{
      color:#fff;
      background:rgba(255,255,255,.08);
    }
    .stage-chips{
      display:flex;
      gap:8px;
      align-items:center;
      padding-left:10px;
      margin-left:8px;
      border-left:1px solid var(--line);
      white-space:nowrap;
    }
    .stage-chip{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.06);
      color:var(--muted);
      padding:8px 10px;
      border-radius:999px;
      font-size:.82rem;
      font-weight:800;
    }
    .stage-chip.is-live{
      color:#0b0714;
      border-color:transparent;
      background:linear-gradient(135deg,var(--warm),#ff9f1c);
    }
    .stage-dot{
      width:7px;height:7px;border-radius:50%;
      background:currentColor;
      box-shadow:0 0 0 4px rgba(255,255,255,.1);
    }
    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:42px;
      padding:10px 17px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      color:#fff!important;
      font-weight:900;
      box-shadow:0 14px 30px rgba(139,92,246,.3);
      border:0;
    }
    .nav-cta:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(255,78,205,.26)}
    .navbar-toggler{
      border:1px solid var(--line);
      border-radius:14px;
      padding:9px 11px;
      color:#fff;
      background:rgba(255,255,255,.05);
    }
    .navbar-toggler:focus{box-shadow:0 0 0 4px rgba(139,92,246,.25)}
    .navbar-toggler-icon{
      filter:invert(1) grayscale(1) brightness(2);
    }
    .section{
      position:relative;
      padding:88px 0;
    }
    .section-tight{padding:62px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#100b22;
      background:linear-gradient(135deg,var(--accent),#b8f7ff);
      padding:8px 13px;
      border-radius:999px;
      font-weight:900;
      font-size:.86rem;
      box-shadow:0 10px 26px rgba(34,211,238,.18);
      margin-bottom:18px;
    }
    .eyebrow.dark{
      color:#fff;
      background:rgba(255,255,255,.08);
      border:1px solid var(--line);
      box-shadow:none;
    }
    .section-title{
      font-size:clamp(1.9rem,3.8vw,3.35rem);
      line-height:1.18;
      letter-spacing:-.04em;
      margin:0 0 18px;
      font-weight:950;
    }
    .section-desc{
      color:var(--muted);
      font-size:1.04rem;
      max-width:760px;
      margin:0 0 30px;
    }
    .hero{
      padding:82px 0 56px;
      min-height:calc(100vh - var(--nav-h));
      display:flex;
      align-items:center;
      overflow:hidden;
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(11,7,20,.96) 0%,rgba(11,7,20,.63) 46%,rgba(11,7,20,.88) 100%),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='680' viewBox='0 0 1200 680'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0' x2='1'%3E%3Cstop stop-color='%238b5cf6'/%3E%3Cstop offset='1' stop-color='%23ff4ecd'/%3E%3C/linearGradient%3E%3C/defs%3E%3Crect width='1200' height='680' fill='%2310081f'/%3E%3Cg opacity='.44'%3E%3Crect x='64' y='58' width='190' height='270' rx='26' fill='url(/%23g)'/%3E%3Crect x='284' y='96' width='190' height='270' rx='26' fill='%2322d3ee'/%3E%3Crect x='504' y='38' width='190' height='270' rx='26' fill='%23ffd166'/%3E%3Crect x='724' y='116' width='190' height='270' rx='26' fill='%23ff4ecd'/%3E%3Crect x='944' y='70' width='190' height='270' rx='26' fill='%238b5cf6'/%3E%3Crect x='168' y='376' width='210' height='250' rx='28' fill='%23ffffff' opacity='.18'/%3E%3Crect x='420' y='348' width='210' height='250' rx='28' fill='%23ffffff' opacity='.14'/%3E%3Crect x='674' y='394' width='210' height='250' rx='28' fill='%23ffffff' opacity='.2'/%3E%3C/g%3E%3Cg stroke='%23ffffff' stroke-opacity='.12'%3E%3Cpath d='M0 488 C200 390 390 586 620 478 C850 370 970 500 1200 410'/%3E%3Cpath d='M0 210 C230 130 410 300 620 210 C850 118 980 254 1200 174'/%3E%3C/g%3E%3C/svg%3E");
      background-size:cover;
      background-position:center;
      z-index:-2;
    }
    .hero:after{
      content:"";
      position:absolute;
      width:560px;height:560px;
      right:-160px;bottom:-180px;
      background:radial-gradient(circle,rgba(255,78,205,.32),transparent 68%);
      z-index:-1;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.08fr) minmax(330px,.92fr);
      gap:34px;
      align-items:stretch;
    }
    .hero-copy{
      padding:28px 0;
    }
    h1{
      font-size:clamp(2.35rem,5.3vw,5.7rem);
      line-height:1.04;
      font-weight:1000;
      letter-spacing:-.065em;
      margin:0 0 20px;
      max-width:820px;
    }
    .hero-lead{
      max-width:730px;
      color:#ded6ea;
      font-size:clamp(1.04rem,1.45vw,1.25rem);
      margin:0 0 28px;
    }
    .hero-actions{
      display:flex;
      gap:13px;
      flex-wrap:wrap;
      align-items:center;
      margin-bottom:28px;
    }
    .btn-brand,.btn-ghost,.btn-lightline{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      border-radius:999px;
      min-height:50px;
      padding:13px 21px;
      font-weight:950;
      transition:var(--ease);
      border:1px solid transparent;
      cursor:pointer;
    }
    .btn-brand{
      color:#fff;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 18px 40px rgba(139,92,246,.32);
    }
    .btn-brand:hover{transform:translateY(-3px);box-shadow:0 22px 54px rgba(255,78,205,.28)}
    .btn-ghost{
      color:#fff;
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.14);
      backdrop-filter:blur(12px);
    }
    .btn-ghost:hover{background:rgba(255,255,255,.13);transform:translateY(-2px)}
    .btn-lightline{
      color:#fff;
      background:transparent;
      border-color:rgba(255,255,255,.18);
    }
    .btn-lightline:hover{background:rgba(255,255,255,.08)}
    .btn-brand:focus,.btn-ghost:focus,.btn-lightline:focus,.form-control:focus{
      outline:none;
      box-shadow:0 0 0 4px rgba(139,92,246,.28),0 18px 40px rgba(0,0,0,.18);
    }
    .hero-points{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      max-width:720px;
    }
    .point{
      padding:16px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.06);
      border-radius:18px;
      backdrop-filter:blur(12px);
    }
    .point b{
      display:block;
      font-size:1.3rem;
      line-height:1;
      margin-bottom:6px;
    }
    .point span{color:var(--muted);font-size:.9rem}
    .preheat-panel{
      border:1px solid rgba(255,255,255,.13);
      background:linear-gradient(180deg,rgba(31,22,50,.88),rgba(18,12,34,.82));
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow);
      backdrop-filter:blur(18px);
      position:relative;
      overflow:hidden;
    }
    .preheat-panel:before{
      content:"";
      position:absolute;
      width:190px;height:190px;
      right:-70px;top:-70px;
      border-radius:50%;
      background:rgba(34,211,238,.22);
      filter:blur(4px);
    }
    .progress-row{
      display:grid;
      grid-template-columns:160px 1fr;
      gap:18px;
      align-items:center;
      position:relative;
      z-index:1;
    }
    .ring{
      width:156px;height:156px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:conic-gradient(var(--accent) 0 74%,rgba(255,255,255,.11) 74% 100%);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.1),0 18px 44px rgba(34,211,238,.14);
      position:relative;
    }
    .ring:after{
      content:"";
      width:116px;height:116px;
      border-radius:50%;
      background:#151025;
      position:absolute;
      box-shadow:inset 0 0 20px rgba(255,255,255,.04);
    }
    .ring-inner{
      position:relative;
      z-index:1;
      text-align:center;
    }
    .ring-inner strong{display:block;font-size:2.05rem;line-height:1;font-weight:1000}
    .ring-inner small{color:var(--muted);font-weight:800}
    .preheat-title{
      font-size:1.25rem;
      font-weight:950;
      margin-bottom:8px;
    }
    .preheat-text{color:var(--muted);font-size:.95rem;margin:0}
    .tier-list{
      display:grid;
      gap:11px;
      margin:22px 0 0;
      position:relative;
      z-index:1;
    }
    .tier{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:13px 14px;
      border:1px solid var(--line);
      border-radius:18px;
      background:rgba(255,255,255,.055);
    }
    .tier:hover{background:rgba(255,255,255,.09);transform:translateX(3px)}
    .tier b{font-size:.96rem}
    .tier span{color:var(--muted);font-size:.88rem}
    .tier .price{
      color:var(--warm);
      font-weight:1000;
      white-space:nowrap;
    }
    .panel-note{
      margin-top:18px;
      padding:13px 14px;
      border-radius:18px;
      background:rgba(54,211,153,.12);
      color:#c7f9e2;
      border:1px solid rgba(54,211,153,.22);
      font-size:.92rem;
      position:relative;
      z-index:1;
    }
    .stage{
      background:
        radial-gradient(circle at 18% 18%,rgba(139,92,246,.22),transparent 30%),
        linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.025));
      border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);
    }
    .screenshot-wrap{
      display:grid;
      grid-template-columns:1fr 360px;
      gap:24px;
      align-items:stretch;
    }
    .screen-board{
      min-height:440px;
      border:1px solid rgba(255,255,255,.13);
      border-radius:34px;
      background:linear-gradient(135deg,#1a1130,#100b20);
      box-shadow:var(--shadow);
      padding:18px;
      overflow:hidden;
      position:relative;
    }
    .browser-top{
      display:flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:18px;
      background:rgba(255,255,255,.06);
      border:1px solid var(--line);
      margin-bottom:16px;
    }
    .browser-top i{width:10px;height:10px;border-radius:50%;display:block}
    .browser-top i:nth-child(1){background:#ff6b8a}
    .browser-top i:nth-child(2){background:#ffd166}
    .browser-top i:nth-child(3){background:#36d399}
    .browser-top span{margin-left:8px;color:var(--weak);font-size:.86rem}
    .poster-lanes{
      display:grid;
      grid-template-columns:repeat(5,1fr);
      gap:13px;
    }
    .poster{
      min-height:235px;
      border-radius:22px;
      background:linear-gradient(160deg,rgba(139,92,246,.86),rgba(255,78,205,.28)),linear-gradient(180deg,#2a1f3f,#130d22);
      border:1px solid rgba(255,255,255,.12);
      padding:14px;
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
      position:relative;
      overflow:hidden;
      transition:var(--ease);
    }
    .poster:nth-child(2){transform:translateY(34px);background:linear-gradient(160deg,rgba(34,211,238,.72),rgba(139,92,246,.24)),#181126}
    .poster:nth-child(3){transform:translateY(10px);background:linear-gradient(160deg,rgba(255,209,102,.84),rgba(255,78,205,.24)),#181126}
    .poster:nth-child(4){transform:translateY(52px);background:linear-gradient(160deg,rgba(255,78,205,.75),rgba(34,211,238,.2)),#181126}
    .poster:nth-child(5){transform:translateY(20px);background:linear-gradient(160deg,rgba(54,211,153,.74),rgba(139,92,246,.23)),#181126}
    .poster:before{
      content:"";
      position:absolute;
      inset:-40% -20% auto;
      height:160px;
      background:rgba(255,255,255,.18);
      transform:rotate(18deg);
    }
    .poster:hover{filter:brightness(1.08);box-shadow:0 18px 40px rgba(0,0,0,.24)}
    .poster b{position:relative;z-index:1;font-size:1rem}
    .poster span{position:relative;z-index:1;color:rgba(255,255,255,.8);font-size:.86rem}
    .side-panel{
      display:grid;
      gap:14px;
    }
    .metric-card,.feature-card,.testimonial,.news-card,.faq-card,.download-card,.lead-card{
      border:1px solid var(--line);
      background:rgba(255,255,255,.055);
      border-radius:var(--radius);
      padding:22px;
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
    }
    .metric-card:hover,.feature-card:hover,.testimonial:hover,.news-card:hover,.faq-card:hover{
      transform:translateY(-5px);
      border-color:rgba(255,255,255,.2);
      background:rgba(255,255,255,.075);
    }
    .metric-card strong{
      display:block;
      font-size:2.2rem;
      font-weight:1000;
      letter-spacing:-.05em;
      line-height:1.05;
    }
    .metric-card span{color:var(--muted)}
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 11px;
      border-radius:999px;
      color:#fff;
      background:rgba(139,92,246,.18);
      border:1px solid rgba(139,92,246,.26);
      font-weight:900;
      font-size:.82rem;
      margin-bottom:12px;
    }
    .feature-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .feature-card{
      min-height:210px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .icon-box{
      width:48px;height:48px;border-radius:17px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(139,92,246,.95),rgba(255,78,205,.85));
      box-shadow:0 14px 28px rgba(139,92,246,.25);
      font-weight:1000;
      margin-bottom:18px;
    }
    .feature-card h3,.testimonial h3,.news-card h3,.download-card h3,.lead-card h3{
      margin:0 0 10px;
      font-size:1.16rem;
      font-weight:950;
    }
    .feature-card p,.testimonial p,.news-card p,.download-card p,.lead-card p{color:var(--muted);margin:0}
    .hot-strip{
      display:flex;
      gap:16px;
      overflow-x:auto;
      padding:6px 2px 20px;
      scrollbar-color:rgba(255,255,255,.25) transparent;
    }
    .hot-item{
      flex:0 0 282px;
      border-radius:26px;
      padding:18px;
      border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.035));
      box-shadow:var(--shadow-soft);
    }
    .hot-no{
      width:40px;height:40px;border-radius:14px;
      display:grid;place-items:center;
      background:rgba(255,255,255,.09);
      color:var(--warm);
      font-weight:1000;
      margin-bottom:16px;
    }
    .hot-item h3{font-size:1.08rem;margin:0 0 8px;font-weight:950}
    .hot-item p{color:var(--muted);font-size:.94rem;margin:0 0 16px}
    .mini-link{
      display:inline-flex;
      align-items:center;
      color:#fff;
      font-weight:900;
      border-bottom:1px solid rgba(255,255,255,.35);
      padding-bottom:2px;
    }
    .steps{
      display:grid;
      grid-template-columns:1fr;
      gap:18px;
      counter-reset:step;
      max-width:980px;
      margin:0 auto;
    }
    .step{
      display:grid;
      grid-template-columns:92px 1fr auto;
      gap:20px;
      align-items:center;
      padding:20px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.055);
      border-radius:28px;
      counter-increment:step;
      transition:var(--ease);
    }
    .step:hover{transform:translateX(6px);background:rgba(255,255,255,.08)}
    .step-num{
      width:72px;height:72px;border-radius:24px;
      display:grid;place-items:center;
      font-size:1.45rem;
      font-weight:1000;
      background:linear-gradient(135deg,var(--accent),var(--brand));
      color:#fff;
    }
    .step h3{font-size:1.22rem;font-weight:950;margin:0 0 6px}
    .step p{color:var(--muted);margin:0}
    .step-tag{
      color:#0b0714;
      background:var(--warm);
      padding:8px 12px;
      border-radius:999px;
      font-size:.82rem;
      font-weight:950;
      white-space:nowrap;
    }
    .testimonials{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:18px;
    }
    .wall{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:18px;
    }
    .testimonial.large{
      min-height:100%;
      background:linear-gradient(135deg,rgba(139,92,246,.18),rgba(255,78,205,.1));
    }
    .stars{color:var(--warm);letter-spacing:.08em;margin-bottom:12px}
    .avatar-row{
      display:flex;
      align-items:center;
      gap:10px;
      margin-top:18px;
      color:var(--muted);
      font-size:.92rem;
    }
    .avatar{
      width:36px;height:36px;border-radius:50%;
      background:linear-gradient(135deg,var(--brand),var(--accent));
      display:grid;place-items:center;
      color:#fff;
      font-weight:1000;
    }
    .timeline{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      position:relative;
    }
    .timeline-card{
      border:1px solid var(--line);
      background:rgba(255,255,255,.05);
      border-radius:24px;
      padding:20px;
      position:relative;
    }
    .timeline-card:before{
      content:"";
      width:12px;height:12px;border-radius:50%;
      display:block;
      background:var(--accent);
      box-shadow:0 0 0 6px rgba(34,211,238,.12);
      margin-bottom:16px;
    }
    .timeline-card b{display:block;font-size:1.04rem;margin-bottom:8px}
    .timeline-card p{color:var(--muted);margin:0;font-size:.94rem}
    .news-layout{
      display:grid;
      grid-template-columns:1fr 360px;
      gap:24px;
      align-items:start;
    }
    .news-list{
      border:1px solid var(--line);
      border-radius:28px;
      overflow:hidden;
      background:rgba(255,255,255,.045);
    }
    .news-link{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:16px;
      align-items:center;
      padding:19px 20px;
      border-bottom:1px solid var(--line);
    }
    .news-link:last-child{border-bottom:0}
    .news-link:hover{background:rgba(255,255,255,.07)}
    .news-date{
      color:var(--accent);
      font-weight:1000;
      min-width:54px;
    }
    .news-link b{font-size:1.02rem}
    .news-link span{color:var(--weak);font-size:.9rem}
    .news-aside{
      position:sticky;
      top:96px;
    }
    .faq-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:18px;
    }
    .faq-card h3{
      font-size:1.08rem;
      margin:0 0 10px;
      font-weight:950;
    }
    .faq-card p{color:var(--muted);margin:0}
    .download{
      background:
        radial-gradient(circle at 20% 20%,rgba(34,211,238,.18),transparent 30%),
        linear-gradient(135deg,rgba(139,92,246,.2),rgba(255,78,205,.1));
      border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);
    }
    .download-grid{
      display:grid;
      grid-template-columns:1fr 420px;
      gap:24px;
      align-items:stretch;
    }
    .download-card{
      background:rgba(255,255,255,.07);
    }
    .download-buttons{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .device-list{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:12px;
      margin-top:22px;
    }
    .device{
      padding:14px;
      border-radius:18px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.045);
      color:var(--muted);
      font-weight:800;
    }
    .lead-card{
      background:rgba(12,7,23,.64);
    }
    .form-control{
      color:#fff;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.12);
      border-radius:16px;
      min-height:50px;
      padding:12px 14px;
    }
    .form-control::placeholder{color:#8d829e}
    .form-control:focus{
      color:#fff;
      background:rgba(255,255,255,.09);
      border-color:rgba(139,92,246,.7);
    }
    .privacy{
      display:flex;
      gap:9px;
      color:var(--muted);
      font-size:.88rem;
      margin:13px 0 0;
    }
    .privacy input{margin-top:7px;accent-color:var(--brand)}
    .site-footer{
      padding:56px 0 96px;
      background:#080510;
      border-top:1px solid var(--line);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:28px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:1000;
      font-size:1.18rem;
      margin-bottom:14px;
    }
    .footer-text{color:var(--muted);max-width:650px;margin:0}
    .footer-links{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .footer-links a{
      color:var(--muted);
      padding:9px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      font-weight:800;
    }
    .footer-links a:hover{color:#fff;background:rgba(255,255,255,.08)}
    .copyright{
      margin-top:30px;
      padding-top:22px;
      border-top:1px solid var(--line);
      color:var(--weak);
      font-size:.92rem;
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
    }
    .float-cta{
      position:fixed;
      left:50%;
      bottom:18px;
      transform:translateX(-50%);
      width:min(960px,calc(100% - 28px));
      z-index:1000;
      border:1px solid rgba(255,255,255,.16);
      border-radius:24px;
      background:rgba(17,10,31,.84);
      box-shadow:0 18px 60px rgba(0,0,0,.42);
      backdrop-filter:blur(20px);
      padding:12px 14px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
    }
    .float-cta b{display:block;line-height:1.2}
    .float-cta span{color:var(--muted);font-size:.88rem}
    .float-cta .btn-brand{min-height:44px;padding:10px 17px;white-space:nowrap}
    @media (max-width:1024px){
      .hero-grid,.screenshot-wrap,.news-layout,.download-grid,.testimonials,.footer-grid{
        grid-template-columns:1fr;
      }
      .news-aside{position:relative;top:auto}
      .feature-grid{grid-template-columns:repeat(2,1fr)}
      .timeline{grid-template-columns:repeat(2,1fr)}
      .stage-chips{
        width:100%;
        margin:10px 0 0;
        padding-left:0;
        border-left:0;
        overflow-x:auto;
      }
    }
    @media (max-width:768px){
      body{padding-bottom:112px}
      .section{padding:66px 0}
      .hero{padding:58px 0 42px;min-height:auto}
      .hero-points{grid-template-columns:1fr}
      .progress-row{grid-template-columns:1fr;text-align:center}
      .ring{margin:0 auto}
      .poster-lanes{grid-template-columns:repeat(3,1fr)}
      .poster:nth-child(n){transform:none;min-height:190px}
      .side-panel{grid-template-columns:1fr}
      .feature-grid,.wall,.faq-grid,.device-list{grid-template-columns:1fr}
      .step{grid-template-columns:1fr;gap:12px}
      .step-tag{justify-self:start}
      .news-link{grid-template-columns:1fr;gap:6px}
      .footer-links{justify-content:flex-start}
      .float-cta{align-items:flex-start;flex-direction:column;border-radius:22px}
      .float-cta .btn-brand{width:100%}
    }
    @media (max-width:520px){
      .container{padding-left:16px;padding-right:16px}
      h1{font-size:2.35rem}
      .hero-actions .btn-brand,.hero-actions .btn-ghost,.hero-actions .btn-lightline{width:100%}
      .preheat-panel,.screen-board,.metric-card,.feature-card,.testimonial,.news-card,.faq-card,.download-card,.lead-card{border-radius:20px}
      .poster-lanes{grid-template-columns:repeat(2,1fr)}
      .timeline{grid-template-columns:1fr}
      .hot-item{flex-basis:250px}
      .navbar-brand{font-size:1rem}
      .brand-mark{width:38px;height:38px}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}