/* roulang page: index */
:root{
      --bg:#080b14;
      --bg-soft:#0e1322;
      --bg-card:#121827;
      --bg-card-2:#171f33;
      --surface:#ffffff;
      --surface-soft:#f4f7fb;
      --text:#f7f9ff;
      --text-dark:#172033;
      --muted:#aab4c7;
      --muted-dark:#5c667a;
      --primary:#7c5cff;
      --primary-2:#26d6a8;
      --primary-3:#ffb84d;
      --danger:#ff6b7a;
      --line:rgba(255,255,255,.12);
      --line-dark:#e4e9f2;
      --shadow:0 22px 60px rgba(0,0,0,.32);
      --shadow-soft:0 18px 45px rgba(21,34,68,.12);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1180px;
      --ease:all .24s 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;
      background:
        radial-gradient(circle at top left, rgba(124,92,255,.20), transparent 34rem),
        radial-gradient(circle at 82% 14%, rgba(38,214,168,.13), transparent 28rem),
        var(--bg);
      color:var(--text);
      line-height:1.75;
      letter-spacing:.01em;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover,a:focus{color:var(--primary-2)}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(124,92,255,.35);color:#fff}

    .container{
      width:min(calc(100% - 40px), var(--container));
      margin:0 auto;
    }
    .section{
      padding:92px 0;
      position:relative;
    }
    .section.light{
      background:var(--surface);
      color:var(--text-dark);
    }
    .section.soft{
      background:linear-gradient(180deg,#f7f9fd,#eef3fb);
      color:var(--text-dark);
    }
    .section.dark-panel{
      background:linear-gradient(180deg,#0b1020,#0f172a);
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:28px;
      margin-bottom:34px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border:1px solid rgba(124,92,255,.25);
      border-radius:999px;
      background:rgba(124,92,255,.10);
      color:#cfc7ff;
      font-size:14px;
      font-weight:700;
      margin-bottom:14px;
    }
    .light .section-kicker,
    .soft .section-kicker{
      background:#f0edff;
      color:#5c45d9;
      border-color:#ddd6ff;
    }
    .section-title{
      margin:0;
      font-size:clamp(28px,3.2vw,44px);
      line-height:1.22;
      font-weight:900;
      letter-spacing:-.03em;
    }
    .section-desc{
      margin:12px 0 0;
      max-width:680px;
      color:var(--muted);
      font-size:17px;
    }
    .light .section-desc,.soft .section-desc{color:var(--muted-dark)}
    .grid-x{position:relative}

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(8,11,20,.78);
      backdrop-filter:blur(18px);
      border-bottom:1px solid var(--line);
    }
    .nav-wrap{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#fff;
      background:
        linear-gradient(135deg, rgba(124,92,255,1), rgba(38,214,168,1));
      box-shadow:0 12px 30px rgba(124,92,255,.35);
      font-weight:900;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
    }
    .brand-name{
      font-weight:900;
      font-size:18px;
      letter-spacing:.02em;
    }
    .brand-sub{
      color:var(--muted);
      font-size:12px;
      margin-top:4px;
    }
    .nav-main{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:6px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.045);
      border-radius:999px;
    }
    .nav-link{
      padding:10px 16px;
      border-radius:999px;
      font-size:14px;
      color:#dce3f3;
      font-weight:700;
    }
    .nav-link:hover,
    .nav-link:focus{
      background:rgba(255,255,255,.08);
      color:#fff;
    }
    .nav-link.active{
      background:#fff;
      color:#131a2b;
      box-shadow:0 10px 24px rgba(0,0,0,.16);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .menu-toggle{
      display:none;
      width:42px;
      height:42px;
      border-radius:13px;
      border:1px solid var(--line);
      color:#fff;
      background:rgba(255,255,255,.06);
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      border-radius:999px;
      border:1px solid transparent;
      padding:13px 20px;
      min-height:48px;
      font-weight:850;
      letter-spacing:.01em;
      transition:var(--ease);
      user-select:none;
      box-shadow:none;
      white-space:nowrap;
    }
    .btn:focus{
      outline:3px solid rgba(38,214,168,.35);
      outline-offset:3px;
    }
    .btn-primary{
      color:#071018;
      background:linear-gradient(135deg,var(--primary-2),#9dffdc);
      box-shadow:0 16px 34px rgba(38,214,168,.24);
    }
    .btn-primary:hover{
      color:#071018;
      transform:translateY(-2px);
      box-shadow:0 22px 44px rgba(38,214,168,.30);
    }
    .btn-secondary{
      color:#fff;
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.16);
    }
    .btn-secondary:hover{
      color:#fff;
      background:rgba(255,255,255,.13);
      transform:translateY(-2px);
    }
    .btn-dark{
      background:#111827;
      color:#fff;
      border-color:#111827;
    }
    .btn-dark:hover{
      color:#fff;
      background:#1f2937;
      transform:translateY(-2px);
    }
    .btn-ghost{
      color:#27324a;
      border-color:var(--line-dark);
      background:#fff;
    }
    .btn-ghost:hover{
      color:#111827;
      border-color:#cfd8e6;
      box-shadow:var(--shadow-soft);
      transform:translateY(-2px);
    }

    .hero{
      padding:84px 0 74px;
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:76px 0 auto;
      height:1px;
      background:linear-gradient(90deg,transparent,rgba(255,255,255,.16),transparent);
    }
    .hero-shell{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:34px;
      align-items:stretch;
    }
    .hero-copy{
      padding:36px 0;
    }
    .hero-label{
      display:inline-flex;
      align-items:center;
      gap:9px;
      padding:8px 13px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.14);
      color:#dfe7ff;
      font-weight:800;
      font-size:14px;
      margin-bottom:22px;
    }
    .hero h1{
      margin:0;
      max-width:760px;
      font-size:clamp(38px,5.6vw,72px);
      line-height:1.05;
      font-weight:950;
      letter-spacing:-.06em;
    }
    .gradient-text{
      background:linear-gradient(135deg,#fff,#bdb3ff 45%,#7ff4d4);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-intro{
      margin:22px 0 0;
      max-width:690px;
      color:#c9d2e6;
      font-size:18px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:30px;
    }
    .hero-points{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:28px;
    }
    .data-pill{
      display:flex;
      align-items:center;
      gap:10px;
      padding:12px 14px;
      border-radius:16px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.12);
      color:#d9e2f7;
    }
    .data-pill strong{
      color:#fff;
      font-size:19px;
      line-height:1;
    }
    .hero-stage{
      min-height:560px;
      position:relative;
      border-radius:var(--radius-xl);
      background:
        linear-gradient(145deg,rgba(255,255,255,.14),rgba(255,255,255,.04)),
        radial-gradient(circle at 20% 12%,rgba(124,92,255,.38),transparent 22rem),
        #111827;
      border:1px solid rgba(255,255,255,.16);
      box-shadow:var(--shadow);
      overflow:hidden;
      padding:24px;
    }
    .paper-cover{
      position:relative;
      height:100%;
      display:grid;
      grid-template-rows:auto 1fr auto;
      gap:18px;
      padding:26px;
      border-radius:24px;
      background:
        linear-gradient(160deg,rgba(255,255,255,.97),rgba(237,244,255,.92));
      color:var(--text-dark);
      overflow:hidden;
    }
    .paper-cover::after{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      right:-70px;
      top:-82px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(124,92,255,.22),transparent 70%);
    }
    .paper-top{
      display:flex;
      justify-content:space-between;
      align-items:flex-start;
      gap:16px;
      position:relative;
      z-index:1;
    }
    .paper-badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#4432b8;
      background:#eeeaff;
      border:1px solid #d9d1ff;
      border-radius:999px;
      padding:8px 12px;
      font-size:13px;
      font-weight:900;
    }
    .paper-tag{
      padding:7px 10px;
      border-radius:12px;
      background:#111827;
      color:#fff;
      font-size:12px;
      font-weight:900;
    }
    .paper-title{
      position:relative;
      z-index:1;
      margin:18px 0 0;
      font-size:32px;
      line-height:1.18;
      font-weight:950;
      letter-spacing:-.04em;
    }
    .paper-list{
      position:relative;
      z-index:1;
      display:grid;
      gap:12px;
      margin:22px 0;
    }
    .paper-list li{
      list-style:none;
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:13px;
      border-radius:16px;
      background:#fff;
      border:1px solid #e7ecf5;
      box-shadow:0 10px 28px rgba(31,41,55,.06);
      color:#334155;
      font-size:15px;
    }
    .paper-list i{color:var(--primary-2);margin-top:5px}
    .lead-form{
      position:relative;
      z-index:1;
      padding:16px;
      border-radius:20px;
      background:#0f172a;
      color:#fff;
    }
    .form-row{
      display:flex;
      gap:10px;
    }
    .lead-form input{
      flex:1;
      height:48px;
      border:none;
      border-radius:999px;
      padding:0 16px;
      background:#fff;
      color:#111827;
      box-shadow:none;
    }
    .lead-form input:focus{
      outline:3px solid rgba(124,92,255,.35);
      outline-offset:2px;
    }
    .form-note{
      margin:10px 4px 0;
      color:#b8c3d9;
      font-size:13px;
    }

    .news-layout{
      display:grid;
      grid-template-columns:1.45fr .75fr;
      gap:24px;
      align-items:start;
    }
    .news-card,
    .side-recommend,
    .service-card,
    .feature-card,
    .guide-panel,
    .app-card,
    .testimonial-card,
    .about-card{
      border-radius:var(--radius-lg);
      border:1px solid var(--line-dark);
      background:#fff;
      box-shadow:var(--shadow-soft);
    }
    .news-card{
      overflow:hidden;
    }
    .news-item{
      display:grid;
      grid-template-columns:112px 1fr auto;
      gap:18px;
      padding:22px;
      align-items:center;
      border-bottom:1px solid var(--line-dark);
    }
    .news-item:last-child{border-bottom:none}
    .news-date{
      display:grid;
      place-items:center;
      height:76px;
      border-radius:18px;
      background:linear-gradient(135deg,#f1eeff,#e8fbf6);
      color:#4f46e5;
      font-weight:900;
      text-align:center;
    }
    .news-date span{
      display:block;
      font-size:13px;
      color:#667085;
      font-weight:800;
    }
    .news-title{
      margin:0;
      font-size:19px;
      line-height:1.35;
      font-weight:900;
    }
    .news-title a:hover{color:#5b45e8}
    .news-summary{
      margin:8px 0 0;
      color:var(--muted-dark);
      font-size:15px;
    }
    .news-arrow{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      border-radius:50%;
      background:#f5f7fb;
      color:#111827;
    }
    .news-item:hover .news-arrow{
      background:#111827;
      color:#fff;
      transform:translateX(3px);
    }
    .side-recommend{
      padding:22px;
      position:sticky;
      top:96px;
    }
    .mini-list{
      display:grid;
      gap:12px;
      margin:16px 0 0;
    }
    .mini-list a{
      display:flex;
      gap:12px;
      padding:13px;
      border-radius:15px;
      background:#f7f9fd;
      color:#27324a;
      font-weight:800;
    }
    .mini-list a:hover{
      background:#efedff;
      color:#563ddb;
      transform:translateY(-2px);
    }
    .rank-dot{
      flex:0 0 24px;
      height:24px;
      display:grid;
      place-items:center;
      border-radius:8px;
      background:#111827;
      color:#fff;
      font-size:12px;
    }

    .pain-band{
      border-radius:var(--radius-xl);
      border:1px solid rgba(255,255,255,.14);
      background:
        linear-gradient(135deg,rgba(255,255,255,.12),rgba(255,255,255,.04)),
        #0e1424;
      padding:32px;
      box-shadow:var(--shadow);
    }
    .pain-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      margin-top:26px;
    }
    .pain-tile{
      padding:20px;
      min-height:170px;
      border-radius:20px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.06);
      transition:var(--ease);
    }
    .pain-tile:hover{
      transform:translateY(-4px);
      background:rgba(255,255,255,.09);
    }
    .pain-tile i{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      border-radius:14px;
      color:#071018;
      background:var(--primary-2);
      margin-bottom:14px;
    }
    .pain-tile h3{
      margin:0 0 8px;
      font-size:18px;
      font-weight:900;
    }
    .pain-tile p{
      margin:0;
      color:#c5cde0;
      font-size:15px;
    }

    .service-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:22px;
    }
    .service-card{
      padding:28px;
      position:relative;
      overflow:hidden;
    }
    .service-card.accent{
      background:linear-gradient(135deg,#121827,#24304a);
      color:#fff;
      border-color:rgba(255,255,255,.12);
    }
    .service-icon{
      width:54px;
      height:54px;
      border-radius:18px;
      display:grid;
      place-items:center;
      background:#efeaff;
      color:#5b45e8;
      margin-bottom:18px;
      font-size:22px;
    }
    .service-card.accent .service-icon{
      background:rgba(38,214,168,.16);
      color:var(--primary-2);
    }
    .service-card h3{
      margin:0 0 10px;
      font-size:24px;
      font-weight:950;
      letter-spacing:-.03em;
    }
    .service-card p{
      margin:0;
      color:var(--muted-dark);
    }
    .service-card.accent p{color:#c8d1e4}
    .service-tags{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:20px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 10px;
      border-radius:999px;
      background:#f2f5fb;
      color:#445066;
      font-size:13px;
      font-weight:800;
    }
    .accent .tag{
      background:rgba(255,255,255,.10);
      color:#e7ecf7;
    }

    .feature-row{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .feature-card{
      padding:26px;
      background:#fff;
      transition:var(--ease);
      min-height:260px;
    }
    .feature-card:hover{
      transform:translateY(-6px);
      box-shadow:0 28px 60px rgba(21,34,68,.16);
    }
    .feature-card:nth-child(2){
      background:#111827;
      color:#fff;
      border-color:#111827;
    }
    .feature-card:nth-child(2) p{color:#c8d1e4}
    .feature-number{
      font-size:13px;
      font-weight:950;
      color:#5b45e8;
      letter-spacing:.12em;
    }
    .feature-card:nth-child(2) .feature-number{color:var(--primary-2)}
    .feature-card h3{
      margin:14px 0 10px;
      font-size:25px;
      line-height:1.25;
      font-weight:950;
    }
    .feature-card p{
      margin:0;
      color:var(--muted-dark);
    }
    .feature-visual{
      margin-top:24px;
      height:58px;
      border-radius:18px;
      background:
        repeating-linear-gradient(90deg,rgba(124,92,255,.18) 0 28px,rgba(38,214,168,.20) 28px 56px),
        #f4f7fb;
      border:1px solid rgba(124,92,255,.12);
    }
    .feature-card:nth-child(2) .feature-visual{
      background:
        repeating-linear-gradient(90deg,rgba(38,214,168,.35) 0 30px,rgba(255,255,255,.12) 30px 60px),
        rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.14);
    }

    .campaign{
      border-radius:var(--radius-xl);
      overflow:hidden;
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      background:
        radial-gradient(circle at 16% 18%,rgba(255,184,77,.30),transparent 18rem),
        linear-gradient(135deg,#22153b,#101827 62%,#0f2a31);
      border:1px solid rgba(255,255,255,.13);
      box-shadow:var(--shadow);
    }
    .campaign-left{
      padding:36px;
      border-right:1px solid rgba(255,255,255,.12);
    }
    .campaign-left h2{
      margin:14px 0 12px;
      font-size:36px;
      line-height:1.18;
      font-weight:950;
    }
    .campaign-left p{
      margin:0;
      color:#d4dbea;
    }
    .campaign-list{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
      padding:28px;
    }
    .campaign-item{
      padding:20px;
      border-radius:20px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
    }
    .campaign-item strong{
      display:block;
      margin-bottom:8px;
      font-size:18px;
    }
    .campaign-item span{
      color:#c8d1e4;
      font-size:15px;
    }

    .guide-wrap{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:24px;
      align-items:stretch;
    }
    .guide-panel{
      padding:30px;
    }
    .step-list{
      display:grid;
      gap:14px;
      margin:0;
      padding:0;
    }
    .step-list li{
      list-style:none;
      display:grid;
      grid-template-columns:42px 1fr;
      gap:14px;
      align-items:flex-start;
      padding:16px;
      border-radius:18px;
      background:#f7f9fd;
      border:1px solid #e8edf5;
    }
    .step-num{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:#111827;
      color:#fff;
      font-weight:950;
    }
    .step-list h3{
      margin:0 0 4px;
      font-size:18px;
      font-weight:950;
    }
    .step-list p{
      margin:0;
      color:var(--muted-dark);
      font-size:15px;
    }
    .guide-highlight{
      padding:30px;
      border-radius:var(--radius-lg);
      background:
        linear-gradient(150deg,rgba(124,92,255,.12),rgba(38,214,168,.12)),
        #fff;
      border:1px solid var(--line-dark);
    }
    .check-list{
      display:grid;
      gap:12px;
      margin-top:20px;
    }
    .check-item{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px;
      border-radius:16px;
      background:#fff;
      border:1px solid #e7ecf5;
    }
    .check-item i{
      color:#10b981;
      margin-top:5px;
    }

    .app-stage{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:26px;
      align-items:center;
    }
    .app-card{
      padding:30px;
      background:linear-gradient(135deg,#ffffff,#f5f8ff);
    }
    .app-screen{
      padding:24px;
      border-radius:var(--radius-xl);
      background:#0f172a;
      border:1px solid rgba(255,255,255,.12);
      box-shadow:var(--shadow);
    }
    .screen-top{
      display:flex;
      gap:8px;
      margin-bottom:18px;
    }
    .screen-dot{width:10px;height:10px;border-radius:50%;background:#ff6b7a}
    .screen-dot:nth-child(2){background:#ffb84d}
    .screen-dot:nth-child(3){background:#26d6a8}
    .screen-list{
      display:grid;
      gap:12px;
    }
    .screen-row{
      display:grid;
      grid-template-columns:56px 1fr auto;
      gap:14px;
      align-items:center;
      padding:14px;
      border-radius:18px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.10);
    }
    .poster-mini{
      width:56px;
      height:70px;
      border-radius:12px;
      background:linear-gradient(135deg,#7c5cff,#26d6a8);
    }
    .screen-row:nth-child(2) .poster-mini{background:linear-gradient(135deg,#ffb84d,#7c5cff)}
    .screen-row:nth-child(3) .poster-mini{background:linear-gradient(135deg,#26d6a8,#3b82f6)}
    .screen-row strong{display:block;color:#fff}
    .screen-row span{color:#aab4c7;font-size:13px}
    .screen-badge{
      padding:6px 9px;
      border-radius:999px;
      background:rgba(38,214,168,.16);
      color:#9dffdc;
      font-weight:900;
      font-size:12px;
    }

    .trust-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      margin-top:28px;
    }
    .trust-metric{
      padding:24px;
      border-radius:22px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.13);
    }
    .trust-metric strong{
      display:block;
      font-size:34px;
      line-height:1;
      font-weight:950;
      color:#fff;
    }
    .trust-metric span{
      display:block;
      margin-top:10px;
      color:#c9d2e6;
      font-size:15px;
    }
    .testimonial-row{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
      margin-top:22px;
    }
    .testimonial-card{
      padding:22px;
      background:rgba(255,255,255,.07);
      border-color:rgba(255,255,255,.12);
      color:#fff;
      box-shadow:none;
    }
    .testimonial-card p{
      margin:0;
      color:#d4dbea;
    }
    .user{
      display:flex;
      align-items:center;
      gap:12px;
      margin-top:18px;
    }
    .avatar{
      width:42px;
      height:42px;
      border-radius:50%;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
    }
    .user strong{display:block}
    .user span{display:block;color:#aab4c7;font-size:13px}

    .faq-layout{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:28px;
      align-items:start;
    }
    .faq-aside{
      padding:28px;
      border-radius:var(--radius-lg);
      background:#111827;
      color:#fff;
      position:sticky;
      top:96px;
    }
    .faq-aside p{color:#c8d1e4;margin:12px 0 22px}
    .accordion{
      background:transparent;
      margin:0;
    }
    .accordion-item{
      margin-bottom:12px;
      border-radius:18px;
      overflow:hidden;
      border:1px solid var(--line-dark);
      background:#fff;
      box-shadow:0 12px 30px rgba(21,34,68,.08);
    }
    .accordion-title{
      color:#172033;
      font-size:17px;
      font-weight:950;
      padding:20px 56px 20px 20px;
      border:none;
      line-height:1.45;
    }
    .accordion-title:hover,
    .accordion-title:focus{
      background:#f5f7fb;
      color:#5b45e8;
    }
    .accordion-title::before{
      right:22px;
      margin-top:-10px;
      font-size:22px;
    }
    .accordion-content{
      border:none;
      border-top:1px solid var(--line-dark);
      color:var(--muted-dark);
      padding:18px 20px 22px;
      line-height:1.8;
    }

    .about-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:24px;
    }
    .about-card{
      padding:30px;
    }
    .about-card.dark{
      background:#111827;
      color:#fff;
      border-color:#111827;
    }
    .about-card.dark p{color:#c8d1e4}
    .about-card h2,
    .about-card h3{
      margin:0 0 14px;
      font-weight:950;
      line-height:1.25;
      letter-spacing:-.03em;
    }
    .about-card h2{font-size:34px}
    .about-card h3{font-size:24px}
    .about-card p{
      margin:0 0 14px;
      color:var(--muted-dark);
    }
    .about-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:22px;
    }
    .policy-line{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px 0;
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .policy-line:last-child{border-bottom:none}
    .policy-line i{color:var(--primary-2);margin-top:5px}

    .site-footer{
      background:#060913;
      color:#d7def0;
      padding:48px 0 28px;
      border-top:1px solid rgba(255,255,255,.10);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.1fr .8fr .8fr;
      gap:30px;
      padding-bottom:30px;
    }
    .footer-logo{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:14px;
    }
    .footer-logo .brand-mark{width:38px;height:38px;border-radius:13px}
    .footer-title{
      font-size:18px;
      font-weight:950;
      color:#fff;
    }
    .footer-text{
      color:#aab4c7;
      margin:0;
      max-width:520px;
    }
    .footer-col h3{
      font-size:16px;
      margin:0 0 14px;
      color:#fff;
      font-weight:950;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:#aab4c7;
      font-weight:700;
    }
    .footer-links a:hover{color:var(--primary-2)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      align-items:center;
      padding-top:24px;
      border-top:1px solid rgba(255,255,255,.10);
      color:#8f9bb3;
      font-size:14px;
    }

    .floating-cta{
      position:fixed;
      left:50%;
      bottom:18px;
      transform:translateX(-50%);
      z-index:45;
      width:min(calc(100% - 28px),760px);
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:14px;
      padding:12px 14px 12px 18px;
      border-radius:999px;
      background:rgba(15,23,42,.86);
      backdrop-filter:blur(16px);
      border:1px solid rgba(255,255,255,.14);
      box-shadow:0 18px 50px rgba(0,0,0,.34);
    }
    .floating-cta span{
      color:#dbe4f6;
      font-weight:800;
      font-size:14px;
    }

    @media (max-width:1024px){
      .section{padding:74px 0}
      .hero-shell,
      .news-layout,
      .guide-wrap,
      .app-stage,
      .faq-layout,
      .about-grid,
      .campaign{
        grid-template-columns:1fr;
      }
      .hero-stage{min-height:auto}
      .pain-grid,.trust-grid{grid-template-columns:repeat(2,1fr)}
      .side-recommend,.faq-aside{position:relative;top:auto}
      .campaign-left{border-right:none;border-bottom:1px solid rgba(255,255,255,.12)}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 28px), var(--container))}
      .nav-wrap{min-height:68px}
      .brand-sub{display:none}
      .menu-toggle{display:inline-grid;place-items:center}
      .nav-main{
        display:none;
        position:absolute;
        top:76px;
        left:14px;
        right:14px;
        border-radius:20px;
        padding:12px;
        background:rgba(15,23,42,.96);
        box-shadow:var(--shadow);
      }
      .nav-main.open{
        display:grid;
        gap:6px;
      }
      .nav-link{
        display:block;
        border-radius:14px;
        padding:13px 14px;
      }
      .nav-actions .btn{
        display:none;
      }
      .hero{padding:54px 0 58px}
      .hero-copy{padding:10px 0}
      .hero h1{font-size:clamp(34px,10vw,50px)}
      .hero-intro{font-size:16px}
      .section-head{
        display:block;
        margin-bottom:26px;
      }
      .section-desc{font-size:16px}
      .news-item{
        grid-template-columns:1fr;
        gap:12px;
      }
      .news-date{
        width:108px;
        height:58px;
      }
      .news-arrow{display:none}
      .service-grid,.feature-row,.testimonial-row,.campaign-list,.footer-grid{
        grid-template-columns:1fr;
      }
      .paper-cover{padding:20px}
      .paper-title{font-size:26px}
      .form-row{flex-direction:column}
      .form-row .btn{width:100%}
      .footer-bottom{
        flex-direction:column;
        align-items:flex-start;
      }
      .floating-cta{
        border-radius:22px;
        align-items:flex-start;
      }
    }
    @media (max-width:520px){
      .section{padding:58px 0}
      .hero-actions,.about-actions{
        flex-direction:column;
      }
      .btn{width:100%}
      .hero-points{display:grid}
      .data-pill{width:100%}
      .pain-grid,.trust-grid{grid-template-columns:1fr}
      .pain-band,.campaign-left,.guide-panel,.guide-highlight,.app-card,.about-card{
        padding:22px;
      }
      .paper-top{flex-direction:column}
      .screen-row{
        grid-template-columns:46px 1fr;
      }
      .screen-badge{
        grid-column:2;
        justify-self:start;
      }
      .poster-mini{width:46px;height:58px}
      .floating-cta{
        position:static;
        transform:none;
        width:min(calc(100% - 28px),760px);
        margin:0 auto 18px;
        flex-direction:column;
      }
    }