/* roulang page: index */
:root{
      --bg:#070812;
      --bg-soft:#101222;
      --panel:#15182b;
      --panel-2:#1b1f36;
      --text:#f7f8ff;
      --muted:#aeb4c7;
      --weak:#747d98;
      --line:rgba(255,255,255,.12);
      --line-strong:rgba(255,255,255,.2);
      --primary:#8b5cf6;
      --primary-2:#22d3ee;
      --accent:#ff4fd8;
      --gold:#ffd166;
      --success:#37d399;
      --danger:#ff6b6b;
      --radius-sm:14px;
      --radius:22px;
      --radius-lg:34px;
      --shadow:0 24px 70px rgba(0,0,0,.36);
      --shadow-soft:0 14px 38px rgba(0,0,0,.22);
      --container:1180px;
      --nav-h:76px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *{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;
      line-height:1.72;
      color:var(--text);
      background:
        radial-gradient(circle at 14% 10%, rgba(139,92,246,.36), transparent 34%),
        radial-gradient(circle at 86% 12%, rgba(34,211,238,.22), transparent 30%),
        radial-gradient(circle at 50% 96%, rgba(255,79,216,.12), transparent 34%),
        var(--bg);
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.7), transparent 80%);
      z-index:-1;
    }
    a{color:inherit;text-decoration:none;transition:color .25s var(--ease),opacity .25s var(--ease)}
    a:hover{color:#fff}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(34,211,238,.35);color:#fff}
    .container-rl{width:min(var(--container), calc(100% - 40px));margin-inline:auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      backdrop-filter:blur(18px);
      background:rgba(7,8,18,.72);
      border-bottom:1px solid var(--line);
    }
    .nav-shell{
      height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand-logo{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:900;
      letter-spacing:-.04em;
      font-size:1.2rem;
      color:#fff;
    }
    .brand-logo-mark{
      width:38px;
      height:38px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 12px 28px rgba(34,211,238,.22);
      position:relative;
      overflow:hidden;
    }
    .brand-logo-mark::after{
      content:"";
      position:absolute;
      width:18px;
      height:18px;
      border:2px solid rgba(255,255,255,.72);
      border-radius:50%;
      box-shadow:16px 0 0 -5px rgba(255,255,255,.52);
    }
    .header-actions{display:flex;align-items:center;gap:12px}
    .menu-btn{
      border:1px solid var(--line-strong);
      background:rgba(255,255,255,.06);
      color:#fff;
      border-radius:999px;
      height:44px;
      padding:0 16px;
      display:inline-flex;
      align-items:center;
      gap:9px;
      transition:transform .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease);
    }
    .menu-btn:hover,.menu-btn:focus{
      transform:translateY(-2px);
      border-color:rgba(34,211,238,.5);
      background:rgba(255,255,255,.1);
      color:#fff;
      outline:none;
    }
    .menu-lines{width:18px;display:grid;gap:4px}
    .menu-lines span{height:2px;background:#fff;border-radius:999px}
    .btn-rl{
      border:0;
      border-radius:999px;
      padding:13px 22px;
      font-weight:800;
      letter-spacing:-.02em;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease);
      white-space:nowrap;
    }
    .btn-rl:focus{outline:3px solid rgba(34,211,238,.28);outline-offset:3px}
    .btn-primary-rl{
      color:#08101d;
      background:linear-gradient(135deg,#fff,var(--primary-2));
      box-shadow:0 16px 34px rgba(34,211,238,.18);
    }
    .btn-primary-rl:hover{transform:translateY(-3px);box-shadow:0 22px 48px rgba(34,211,238,.28);color:#08101d}
    .btn-secondary-rl{
      color:#fff;
      background:rgba(255,255,255,.08);
      border:1px solid var(--line-strong);
    }
    .btn-secondary-rl:hover{transform:translateY(-3px);background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.34);color:#fff}
    .btn-ghost-rl{
      color:#dfe5ff;
      background:transparent;
      border:1px solid var(--line);
    }
    .btn-ghost-rl:hover{color:#fff;background:rgba(255,255,255,.08);border-color:rgba(139,92,246,.5)}
    .offcanvas{
      background:rgba(10,12,25,.94);
      backdrop-filter:blur(22px);
      color:var(--text);
      border-left:1px solid var(--line);
    }
    .offcanvas-header{padding:28px 30px;border-bottom:1px solid var(--line)}
    .btn-close{filter:invert(1);opacity:.8}
    .drawer-search{
      display:flex;
      align-items:center;
      gap:10px;
      padding:10px;
      border:1px solid var(--line);
      border-radius:18px;
      background:rgba(255,255,255,.06);
      margin:24px 0;
    }
    .drawer-search input{
      width:100%;
      border:0;
      outline:0;
      background:transparent;
      color:#fff;
      padding:8px;
    }
    .drawer-search input::placeholder{color:var(--weak)}
    .drawer-link{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:18px 20px;
      border-radius:18px;
      color:#e8ebff;
      background:rgba(255,255,255,.04);
      border:1px solid transparent;
      margin-bottom:12px;
      font-size:1.08rem;
      font-weight:800;
    }
    .drawer-link:hover,.drawer-link.active{
      color:#fff;
      background:linear-gradient(135deg,rgba(139,92,246,.25),rgba(34,211,238,.12));
      border-color:rgba(34,211,238,.26);
      transform:translateX(4px);
    }
    main{position:relative}
    section{position:relative}
    .section-pad{padding:94px 0}
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:30px;
      margin-bottom:34px;
    }
    .section-kicker{
      color:var(--primary-2);
      font-weight:900;
      letter-spacing:.08em;
      font-size:.86rem;
      text-transform:uppercase;
      margin-bottom:10px;
    }
    .section-title{
      margin:0;
      font-size:clamp(2rem,4vw,3.35rem);
      line-height:1.08;
      letter-spacing:-.06em;
      font-weight:950;
    }
    .section-desc{
      margin:12px 0 0;
      max-width:700px;
      color:var(--muted);
      font-size:1.04rem;
    }
    .badge-rl{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      color:#dfe7ff;
      background:rgba(255,255,255,.07);
      border:1px solid var(--line);
      font-weight:800;
      font-size:.84rem;
    }
    .badge-dot{
      width:8px;height:8px;border-radius:50%;
      background:var(--success);
      box-shadow:0 0 0 5px rgba(55,211,153,.12);
    }
    .hero{
      min-height:calc(100vh - var(--nav-h));
      padding:34px 0 70px;
      display:flex;
      align-items:center;
    }
    .hero-store{
      width:100%;
      min-height:660px;
      border-radius:42px;
      overflow:hidden;
      position:relative;
      border:1px solid var(--line-strong);
      background:
        linear-gradient(90deg,rgba(7,8,18,.88) 0%,rgba(7,8,18,.58) 48%,rgba(7,8,18,.22) 100%),
        radial-gradient(circle at 78% 30%,rgba(34,211,238,.32),transparent 28%),
        radial-gradient(circle at 88% 76%,rgba(255,79,216,.24),transparent 30%),
        linear-gradient(135deg,#181b33,#080915 58%,#171a2f);
      box-shadow:var(--shadow);
    }
    .hero-store::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(120deg,transparent 0 54%,rgba(255,255,255,.08) 54% 55%,transparent 55%),
        repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 88px);
      opacity:.75;
    }
    .hero-inner{
      position:relative;
      z-index:1;
      min-height:660px;
      display:grid;
      grid-template-rows:auto 1fr auto;
      padding:28px;
    }
    .series-nav{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      padding:10px;
      border:1px solid var(--line);
      border-radius:999px;
      width:max-content;
      max-width:100%;
      background:rgba(255,255,255,.07);
      backdrop-filter:blur(18px);
    }
    .series-nav a{
      padding:10px 15px;
      border-radius:999px;
      color:#e7e9ff;
      font-weight:850;
      font-size:.9rem;
    }
    .series-nav a:hover,.series-nav a.active{background:#fff;color:#111526}
    .hero-copy{
      align-self:center;
      max-width:780px;
      padding:44px 0 24px;
    }
    .hero h1{
      font-size:clamp(3rem,7vw,6.6rem);
      line-height:.92;
      letter-spacing:-.09em;
      margin:20px 0 24px;
      font-weight:980;
    }
    .hero h1 span{
      display:block;
      color:transparent;
      -webkit-text-stroke:1px rgba(255,255,255,.55);
      text-shadow:0 0 34px rgba(139,92,246,.22);
    }
    .hero-lead{
      max-width:680px;
      color:#d6dbea;
      font-size:clamp(1rem,2vw,1.18rem);
      margin:0 0 28px;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
    .hero-metrics{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
      max-width:720px;
    }
    .metric-card{
      background:rgba(255,255,255,.07);
      border:1px solid var(--line);
      border-radius:20px;
      padding:18px;
      backdrop-filter:blur(14px);
    }
    .metric-card strong{display:block;font-size:1.65rem;line-height:1;color:#fff;letter-spacing:-.05em}
    .metric-card span{display:block;color:var(--muted);font-size:.9rem;margin-top:8px}
    .hero-bottom{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      color:var(--muted);
      border-top:1px solid var(--line);
      padding-top:20px;
    }
    .hero-signal{
      display:flex;
      align-items:center;
      gap:10px;
      font-weight:800;
      color:#fff;
    }
    .stage-wrap{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:28px;
      align-items:center;
    }
    .screen-stage{
      position:relative;
      border-radius:34px;
      border:1px solid var(--line-strong);
      background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.05));
      box-shadow:var(--shadow);
      padding:16px;
      overflow:hidden;
    }
    .screen-stage::before{
      content:"";
      position:absolute;
      inset:auto -20% -45% -20%;
      height:55%;
      background:radial-gradient(circle,rgba(34,211,238,.28),transparent 64%);
      filter:blur(16px);
    }
    .browser-bar{
      height:42px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:0 16px;
      border-radius:20px 20px 0 0;
      background:rgba(7,8,18,.82);
      border-bottom:1px solid var(--line);
    }
    .dots{display:flex;gap:7px}
    .dots i{width:10px;height:10px;border-radius:50%;display:block}
    .dots i:nth-child(1){background:#ff6b6b}.dots i:nth-child(2){background:#ffd166}.dots i:nth-child(3){background:#37d399}
    .browser-label{color:var(--muted);font-size:.86rem}
    .dashboard{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:.75fr 1.25fr;
      gap:14px;
      padding:16px;
      background:rgba(7,8,18,.72);
      border-radius:0 0 24px 24px;
      min-height:430px;
    }
    .dash-side,.dash-main{border:1px solid var(--line);background:rgba(255,255,255,.05);border-radius:22px;padding:16px}
    .dash-chip{height:32px;border-radius:999px;background:rgba(255,255,255,.08);margin-bottom:10px}
    .dash-chip:nth-child(2){width:72%}.dash-chip:nth-child(3){width:58%}
    .poster-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .poster{
      min-height:140px;
      border-radius:18px;
      padding:12px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      background:linear-gradient(145deg,rgba(139,92,246,.45),rgba(34,211,238,.08));
      border:1px solid rgba(255,255,255,.12);
      transition:transform .25s var(--ease),border-color .25s var(--ease);
    }
    .poster:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.45)}
    .poster:nth-child(2){background:linear-gradient(145deg,rgba(255,79,216,.38),rgba(255,209,102,.08))}
    .poster:nth-child(3){background:linear-gradient(145deg,rgba(34,211,238,.32),rgba(139,92,246,.1))}
    .poster:nth-child(4){background:linear-gradient(145deg,rgba(55,211,153,.27),rgba(34,211,238,.08))}
    .poster:nth-child(5){background:linear-gradient(145deg,rgba(255,209,102,.28),rgba(139,92,246,.1))}
    .poster:nth-child(6){background:linear-gradient(145deg,rgba(139,92,246,.28),rgba(255,79,216,.12))}
    .poster b{font-size:.96rem;line-height:1.3}
    .poster small{color:#dfe7ff}
    .feature-list{display:grid;gap:14px}
    .feature-item{
      display:grid;
      grid-template-columns:48px 1fr;
      gap:14px;
      padding:18px;
      border-radius:22px;
      background:rgba(255,255,255,.055);
      border:1px solid var(--line);
      transition:transform .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease);
    }
    .feature-item:hover{transform:translateX(6px);background:rgba(255,255,255,.08);border-color:rgba(139,92,246,.42)}
    .feature-icon{
      width:48px;height:48px;border-radius:17px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(139,92,246,.9),rgba(34,211,238,.72));
      font-weight:950;
    }
    .feature-item h3{margin:0 0 4px;font-size:1.08rem;font-weight:900}
    .feature-item p{margin:0;color:var(--muted);font-size:.96rem}
    .steps-lane{
      border:1px solid var(--line);
      border-radius:34px;
      overflow:hidden;
      background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.035));
    }
    .step-row{
      display:grid;
      grid-template-columns:180px 1fr 240px;
      gap:24px;
      align-items:center;
      padding:28px;
      border-bottom:1px solid var(--line);
      transition:background .25s var(--ease),transform .25s var(--ease);
    }
    .step-row:last-child{border-bottom:0}
    .step-row:hover{background:rgba(255,255,255,.055);transform:translateY(-2px)}
    .step-num{
      font-size:3.4rem;
      line-height:1;
      font-weight:980;
      color:transparent;
      -webkit-text-stroke:1px rgba(34,211,238,.8);
      letter-spacing:-.08em;
    }
    .step-row h3{margin:0 0 8px;font-weight:950;letter-spacing:-.03em}
    .step-row p{margin:0;color:var(--muted)}
    .step-tag{
      justify-self:end;
      padding:10px 14px;
      border-radius:999px;
      background:rgba(34,211,238,.12);
      border:1px solid rgba(34,211,238,.28);
      color:#c9f8ff;
      font-weight:850;
    }
    .reviews-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
      align-items:stretch;
    }
    .review-hero,.review-stack .review-card{
      border:1px solid var(--line);
      background:rgba(255,255,255,.06);
      border-radius:30px;
      padding:28px;
      box-shadow:var(--shadow-soft);
    }
    .review-hero{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:390px;
      background:
        radial-gradient(circle at 82% 10%,rgba(255,79,216,.18),transparent 34%),
        rgba(255,255,255,.06);
    }
    .quote-mark{font-size:4rem;line-height:1;color:var(--primary-2);font-weight:950}
    .review-text{font-size:1.35rem;line-height:1.55;letter-spacing:-.03em;margin:18px 0;color:#f2f5ff}
    .review-author{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted)}
    .review-stack{display:grid;gap:16px}
    .review-card p{margin:0 0 16px;color:#dfe4f8}
    .stars{color:var(--gold);letter-spacing:.08em}
    .news-layout{
      display:grid;
      grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);
      gap:24px;
    }
    .news-panel,.recommend-panel{
      border:1px solid var(--line);
      background:rgba(255,255,255,.055);
      border-radius:30px;
      padding:18px;
    }
    .news-list{list-style:none;margin:0;padding:0}
    .news-list li{border-bottom:1px solid var(--line)}
    .news-list li:last-child{border-bottom:0}
    .news-link{
      display:grid;
      grid-template-columns:120px 1fr auto;
      gap:18px;
      align-items:center;
      padding:20px 8px;
      border-radius:18px;
      transition:background .25s var(--ease),transform .25s var(--ease);
    }
    .news-link:hover{background:rgba(255,255,255,.06);transform:translateX(5px);color:#fff}
    .news-date{color:var(--primary-2);font-weight:900;font-size:.9rem}
    .news-link h3{font-size:1.08rem;margin:0 0 5px;font-weight:900}
    .news-link p{margin:0;color:var(--muted);font-size:.95rem}
    .arrow{color:var(--weak);font-size:1.2rem}
    .recommend-panel{
      background:
        radial-gradient(circle at 100% 0,rgba(139,92,246,.28),transparent 36%),
        rgba(255,255,255,.055);
    }
    .recommend-panel h3{font-size:1.35rem;font-weight:950;margin:0 0 12px}
    .rec-list{display:grid;gap:12px;margin-top:18px}
    .rec-item{
      padding:16px;
      border-radius:20px;
      background:rgba(7,8,18,.45);
      border:1px solid var(--line);
    }
    .rec-item b{display:block;margin-bottom:4px}
    .rec-item span{color:var(--muted);font-size:.94rem}
    .download-wrap{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:26px;
      align-items:stretch;
    }
    .download-card{
      border:1px solid var(--line-strong);
      border-radius:34px;
      padding:30px;
      background:linear-gradient(145deg,rgba(139,92,246,.18),rgba(34,211,238,.08));
      box-shadow:var(--shadow-soft);
    }
    .qr-box{
      width:170px;
      height:170px;
      border-radius:28px;
      margin:26px 0;
      background:
        linear-gradient(90deg,#fff 8px,transparent 8px) 0 0/24px 24px,
        linear-gradient(#fff 8px,transparent 8px) 0 0/24px 24px,
        #101222;
      border:10px solid #fff;
      box-shadow:0 18px 44px rgba(0,0,0,.25);
    }
    .download-card p{color:var(--muted);margin:0}
    .plans{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
    }
    .plan{
      border:1px solid var(--line);
      border-radius:28px;
      padding:22px;
      background:rgba(255,255,255,.055);
      position:relative;
      overflow:hidden;
      transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
    }
    .plan:hover{transform:translateY(-6px);border-color:rgba(34,211,238,.45);background:rgba(255,255,255,.08)}
    .plan.featured{
      border-color:rgba(255,209,102,.45);
      background:linear-gradient(180deg,rgba(255,209,102,.13),rgba(255,255,255,.06));
    }
    .plan h3{font-size:1.2rem;font-weight:950;margin:0 0 6px}
    .price{font-size:2.2rem;font-weight:980;letter-spacing:-.06em;margin:12px 0}
    .price small{font-size:.9rem;color:var(--muted);font-weight:700}
    .plan ul{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:10px;color:#dfe4f6}
    .plan li::before{content:"✓";color:var(--success);font-weight:900;margin-right:8px}
    .faq-wrap{
      display:grid;
      grid-template-columns:.8fr 1.2fr;
      gap:28px;
      align-items:start;
    }
    .accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent}
    .accordion-item{
      color:var(--text);
      background:rgba(255,255,255,.055);
      border:1px solid var(--line)!important;
      border-radius:22px!important;
      overflow:hidden;
      margin-bottom:14px;
    }
    .accordion-button{
      color:#fff;
      background:transparent;
      font-weight:900;
      padding:20px 22px;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){color:#fff;background:rgba(139,92,246,.16)}
    .accordion-button::after{filter:invert(1);opacity:.75}
    .accordion-body{color:var(--muted);padding:0 22px 22px}
    .floating-cta{
      position:fixed;
      left:50%;
      bottom:18px;
      transform:translateX(-50%);
      z-index:1020;
      width:min(860px,calc(100% - 28px));
      border:1px solid rgba(255,255,255,.18);
      border-radius:999px;
      background:rgba(14,16,31,.78);
      backdrop-filter:blur(20px);
      box-shadow:0 18px 54px rgba(0,0,0,.38);
      padding:10px 12px 10px 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
    }
    .floating-cta span{color:#e8ecff;font-weight:850;font-size:.95rem}
    .site-footer{
      border-top:1px solid var(--line);
      background:rgba(4,5,12,.6);
      padding:54px 0 96px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:28px;
      align-items:start;
    }
    .footer-title{font-size:1.4rem;font-weight:950;margin-bottom:14px}
    .footer-text{color:var(--muted);max-width:680px;margin:0}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}
    .footer-links a{
      padding:10px 14px;
      border:1px solid var(--line);
      border-radius:999px;
      color:var(--muted);
    }
    .footer-links a:hover{color:#fff;background:rgba(255,255,255,.07);border-color:rgba(34,211,238,.32)}
    .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:16px;
      flex-wrap:wrap;
    }
    @media (max-width:1024px){
      :root{--nav-h:70px}
      .stage-wrap,.download-wrap,.faq-wrap{grid-template-columns:1fr}
      .reviews-grid,.news-layout{grid-template-columns:1fr}
      .plans{grid-template-columns:1fr}
      .section-pad{padding:76px 0}
      .step-row{grid-template-columns:120px 1fr}
      .step-tag{grid-column:2;justify-self:start}
    }
    @media (max-width:768px){
      .container-rl{width:min(100% - 28px,var(--container))}
      .header-cta{display:none}
      .hero{padding:18px 0 52px;min-height:auto}
      .hero-store,.hero-inner{min-height:auto}
      .hero-store{border-radius:30px}
      .hero-inner{padding:18px}
      .series-nav{border-radius:24px;width:100%;overflow-x:auto;flex-wrap:nowrap;justify-content:flex-start}
      .series-nav a{flex:0 0 auto}
      .hero h1{font-size:clamp(2.65rem,14vw,4.4rem)}
      .hero-metrics{grid-template-columns:1fr}
      .hero-bottom{align-items:flex-start;flex-direction:column}
      .dashboard{grid-template-columns:1fr;min-height:auto}
      .poster-grid{grid-template-columns:repeat(2,1fr)}
      .section-head{display:block}
      .news-link{grid-template-columns:1fr;gap:8px}
      .arrow{display:none}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
      .floating-cta{border-radius:24px;align-items:flex-start;flex-direction:column}
      .floating-cta .btn-rl{width:100%}
    }
    @media (max-width:520px){
      .brand-logo{font-size:1rem}
      .brand-logo-mark{width:34px;height:34px;border-radius:12px}
      .menu-btn{height:40px;padding:0 12px}
      .btn-rl{width:100%;padding:12px 16px}
      .hero-actions{width:100%}
      .metric-card strong{font-size:1.45rem}
      .section-title{font-size:2.05rem}
      .section-desc{font-size:.98rem}
      .step-row{grid-template-columns:1fr;padding:22px}
      .step-tag{grid-column:auto}
      .poster-grid{grid-template-columns:1fr}
      .review-text{font-size:1.12rem}
      .qr-box{width:142px;height:142px}
    }

/* 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}