:root{
    --ink:#141c33;
    --ink-2:#3b476a;
    --muted:#68748f;
    --brand:#5b3cff;
    --brand-2:#ff4f8b;
    --brand-3:#00b8e6;
    --line:rgba(20,28,51,.1);
    --card:#ffffff;
    --radius:18px;
    --shadow-sm:0 10px 24px -18px rgba(20,28,51,.45);
    --shadow-md:0 20px 44px -26px rgba(20,28,51,.55);
    --container:1180px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;scroll-padding-top:88px}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    color:var(--ink);
    font-size:16px;
    line-height:1.72;
    -webkit-font-smoothing:antialiased;
    background-color:#f7f6fd;
    background-image:
      radial-gradient(900px 560px at 6% -4%, rgba(122,88,255,.18), transparent 64%),
      radial-gradient(820px 500px at 96% 6%, rgba(255,79,139,.14), transparent 62%),
      radial-gradient(1000px 640px at 50% 104%, rgba(0,184,230,.15), transparent 66%),
      linear-gradient(180deg,#ffffff 0%,#f8f6ff 32%,#fdf5fa 62%,#f3f8ff 100%);
  }
  h1,h2,h3,h4{color:var(--ink);line-height:1.28;margin:0}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  a{color:var(--brand);text-decoration:none}
  img{max-width:100%;height:auto;display:block}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.88);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(20,28,51,.08);
  }
  .header-inner{display:flex;align-items:center;gap:14px;min-height:70px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:.3px}
  .ai-page-logo{max-height:38px;width:auto;object-fit:contain}
  .brand-name{white-space:nowrap}
  .nav{margin-left:auto}
  .nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap}
  .nav-links a{
    display:block;padding:8px 11px;font-size:14px;color:#3b476a;border-radius:10px;
    white-space:nowrap;transition:color .22s ease,background-color .22s ease,transform .22s ease;
  }
  .nav-links a:hover,.nav-links a:focus-visible{color:var(--brand);background:rgba(91,60,255,.09);transform:translateY(-1px)}
  .header-cta{margin-left:10px;padding:10px 20px;font-size:14px;white-space:nowrap}
  .nav-toggle{
    display:none;width:42px;height:42px;margin-left:auto;border-radius:12px;
    border:1px solid var(--line);background:#fff;cursor:pointer;
    align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;
  }
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#2a3450;transition:transform .25s ease,opacity .25s ease}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 28px;border-radius:999px;font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;text-align:center;
    transition:transform .22s ease,box-shadow .26s ease,background-color .26s ease,color .26s ease;
  }
  .btn:active{transform:translateY(0) scale(.985)}
  .btn-primary{
    color:#fff;background-image:linear-gradient(120deg,#5b3cff 0%,#9247ff 48%,#ff4f8b 100%);
    box-shadow:0 14px 28px -14px rgba(91,60,255,.82);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 36px -16px rgba(91,60,255,.9)}
  .btn-ghost{color:#2a3450;background:#fff;border-color:rgba(20,28,51,.14);box-shadow:var(--shadow-sm)}
  .btn-ghost:hover{transform:translateY(-2px);border-color:rgba(91,60,255,.42);color:var(--brand)}
  .btn-light{background:#fff;color:#231a4d;box-shadow:0 12px 24px -16px rgba(0,0,0,.5)}
  .btn-light:hover{transform:translateY(-2px)}

  /* ---------- Hero ---------- */
  .hero{padding:56px 0 20px}
  .hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:46px;align-items:center}
  .hero-copy>*{animation:rise .78s cubic-bezier(.22,.72,.3,1) both}
  .hero-copy>*:nth-child(1){animation-delay:.02s}
  .hero-copy>*:nth-child(2){animation-delay:.1s}
  .hero-copy>*:nth-child(3){animation-delay:.18s}
  .hero-copy>*:nth-child(4){animation-delay:.26s}
  .hero-copy>*:nth-child(5){animation-delay:.34s}
  @keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;
    font-size:13px;font-weight:600;color:#4a2ea8;
    background:linear-gradient(120deg,rgba(91,60,255,.14),rgba(255,79,139,.13));
    border:1px solid rgba(91,60,255,.18);
  }
  .eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,#5b3cff,#ff4f8b)}
  .hero h1{font-size:clamp(29px,4.4vw,50px);font-weight:800;letter-spacing:-.6px;margin:18px 0 16px}
  .hl{background:linear-gradient(180deg,transparent 62%,rgba(255,79,139,.3) 62%);padding:0 2px;color:var(--ink)}
  .hero-lead{font-size:16px;color:var(--ink-2);max-width:560px}
  .hero-lead strong{color:#2d1f74;font-weight:700}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
  .hero-note{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:18px;font-size:13.5px;color:var(--muted)}
  .hero-note li{display:flex;align-items:center;gap:6px}
  .hero-note li::before{content:"✓";color:#12a27a;font-weight:700;font-size:13px}

  .hero-panel{animation:rise .9s cubic-bezier(.22,.72,.3,1) .2s both}
  .panel-shell{
    position:relative;border-radius:24px;padding:26px;
    background:linear-gradient(160deg,#ffffff 0%,#faf7ff 52%,#fff5fa 100%);
    border:1px solid rgba(91,60,255,.16);
    box-shadow:0 30px 60px -34px rgba(64,42,140,.55);
    overflow:hidden;
  }
  .panel-shell::before{
    content:"";position:absolute;top:-70px;right:-60px;width:190px;height:190px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,79,139,.24),transparent 68%);
  }
  .panel-shell::after{
    content:"";position:absolute;bottom:-80px;left:-60px;width:200px;height:200px;border-radius:50%;
    background:radial-gradient(circle,rgba(0,184,230,.22),transparent 68%);
  }
  .panel-top{position:relative;z-index:1;margin-bottom:16px}
  .panel-badge{
    display:inline-block;padding:5px 14px;border-radius:999px;font-size:12.5px;font-weight:700;
    color:#fff;background:linear-gradient(120deg,#5b3cff,#ff4f8b);
  }
  .panel-top p{margin-top:10px;font-size:14px;color:var(--muted)}
  .panel-list{position:relative;z-index:1;display:grid;gap:12px}
  .panel-list li{
    display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:14px;
    background:#fff;border:1px solid rgba(20,28,51,.07);box-shadow:var(--shadow-sm);
    transition:transform .25s ease,box-shadow .25s ease;
  }
  .panel-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
  .tick{
    flex:0 0 auto;width:20px;height:20px;margin-top:2px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:#fff;
    background:linear-gradient(135deg,#5b3cff,#00b8e6);
  }
  .panel-list strong{display:block;font-size:14.5px;color:var(--ink)}
  .panel-list span.txt{display:block;font-size:13px;color:var(--muted);line-height:1.6}

  /* ---------- Metrics ---------- */
  .metrics{padding:8px 0 10px}
  .metrics-grid{
    display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
    padding:22px;border-radius:22px;
    background:linear-gradient(120deg,rgba(255,255,255,.94),rgba(250,246,255,.94));
    border:1px solid rgba(91,60,255,.14);
    box-shadow:0 26px 54px -40px rgba(45,31,116,.7);
  }
  .metric{text-align:center;padding:6px 8px;border-right:1px dashed rgba(20,28,51,.12)}
  .metric:last-child{border-right:none}
  .metric-num{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.5px;background:linear-gradient(120deg,#5b3cff,#ff4f8b);-webkit-background-clip:text;background-clip:text;color:#5b3cff}
  .metric-label{display:block;font-size:13px;color:var(--muted);margin-top:4px}

  /* ---------- Sections ---------- */
  .section{padding:60px 0}
  .section-head{max-width:780px;margin:0 auto 38px;text-align:center}
  .section-head .eyebrow{margin-bottom:14px}
  .section-head h2{font-size:clamp(23px,3vw,34px);font-weight:800;letter-spacing:-.4px;margin-bottom:12px}
  .section-head p{font-size:15px;color:var(--ink-2)}
  .panel-tint{
    border-radius:26px;padding:36px 28px;
    background:linear-gradient(150deg,rgba(255,255,255,.86),rgba(248,244,255,.86));
    border:1px solid rgba(20,28,51,.08);
    box-shadow:0 30px 60px -48px rgba(45,31,116,.7);
  }

  /* ---------- About ---------- */
  .about-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:start}
  .about-main{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
    box-shadow:var(--shadow-sm);
  }
  .about-main h3{font-size:20px;margin-bottom:12px}
  .about-main p{font-size:15px;color:var(--ink-2);margin-bottom:12px}
  .about-points{display:grid;gap:10px;margin-top:16px}
  .about-points li{
    display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2);
    padding:10px 14px;border-radius:12px;background:linear-gradient(120deg,#faf8ff,#fff6fa);
    border:1px solid rgba(91,60,255,.1);
    transition:transform .22s ease;
  }
  .about-points li:hover{transform:translateX(4px)}
  .about-points li span.dot{flex:0 0 auto;width:8px;height:8px;margin-top:8px;border-radius:50%;background:linear-gradient(135deg,#5b3cff,#ff4f8b)}
  .side-card{
    border-radius:var(--radius);padding:26px;color:#fff;
    background:linear-gradient(150deg,#2a1a63 0%,#4a2fb8 52%,#8f3ecb 100%);
    box-shadow:0 28px 54px -30px rgba(46,27,120,.85);
  }
  .side-card h3{color:#fff;font-size:18px;margin-bottom:6px}
  .side-card p{font-size:13.5px;color:rgba(255,255,255,.82);margin-bottom:16px}
  .side-list{display:grid;gap:10px}
  .side-list li{
    display:flex;gap:9px;align-items:flex-start;font-size:14px;color:#fff;
    padding:9px 12px;border-radius:10px;background:rgba(255,255,255,.12);
    border:1px solid rgba(255,255,255,.18);
  }
  .side-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:8px;border-radius:50%;background:#ffd166}

  /* ---------- Cards ---------- */
  .card-grid{display:grid;gap:20px}
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-2{grid-template-columns:repeat(2,1fr)}
  .service-card{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;box-shadow:var(--shadow-sm);overflow:hidden;
    transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
  }
  .service-card::before{
    content:"";position:absolute;left:0;top:0;width:100%;height:4px;
    background:linear-gradient(90deg,#5b3cff,#ff4f8b,#00b8e6);
    transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
  }
  .service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(91,60,255,.26)}
  .service-card:hover::before{transform:scaleX(1)}
  .card-kicker{
    display:inline-block;font-size:12px;font-weight:700;color:#4a2ea8;
    padding:4px 12px;border-radius:999px;background:rgba(91,60,255,.1);margin-bottom:12px;
  }
  .service-card h3{font-size:17.5px;margin-bottom:8px}
  .service-card p{font-size:14px;color:var(--ink-2)}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
  .tag-row span{
    font-size:12px;color:#3f2f8f;padding:4px 10px;border-radius:999px;
    background:linear-gradient(120deg,#f3efff,#ffeef5);border:1px solid rgba(91,60,255,.14);
  }

  /* ---------- Scene grid ---------- */
  .scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
  .scene{
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 16px 18px;
    box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  }
  .scene:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,79,139,.32)}
  .scene h3{font-size:15px;margin-bottom:6px;color:#231a4d}
  .scene p{font-size:13px;color:var(--muted);line-height:1.62}
  .cloud{margin-top:26px}
  .cloud-title{font-size:14px;font-weight:700;color:var(--ink-2);margin-bottom:12px}
  .tag-cloud{display:flex;flex-wrap:wrap;gap:9px}
  .tag-cloud span{
    font-size:13px;color:#2f3a5c;padding:6px 14px;border-radius:999px;background:#fff;
    border:1px solid rgba(20,28,51,.1);box-shadow:0 6px 14px -12px rgba(20,28,51,.6);
    transition:transform .2s ease,color .2s ease,border-color .2s ease;
  }
  .tag-cloud span:hover{transform:translateY(-2px);color:#5b3cff;border-color:rgba(91,60,255,.4)}

  /* ---------- Solutions ---------- */
  .solution-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
    box-shadow:var(--shadow-sm);transition:transform .26s ease,box-shadow .26s ease;
  }
  .solution-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
  .solution-card h3{font-size:16.5px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
  .solution-card h3::before{content:"";width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,#5b3cff,#ff4f8b)}
  .solution-card p{font-size:14px;color:var(--ink-2)}

  /* ---------- Process ---------- */
  .steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
  .step{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 16px;
    box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease;
  }
  .step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
  .step-no{
    width:32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:800;color:#fff;margin-bottom:12px;
    background:linear-gradient(135deg,#5b3cff,#ff4f8b);
  }
  .step h3{font-size:15.5px;margin-bottom:6px}
  .step p{font-size:13px;color:var(--muted);line-height:1.62}

  /* ---------- Service network ---------- */
  .network{
    display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:center;
    border-radius:24px;padding:32px;
    background:linear-gradient(130deg,#ffffff 0%,#f6f2ff 56%,#fff4f9 100%);
    border:1px solid rgba(91,60,255,.16);
    box-shadow:0 30px 60px -46px rgba(45,31,116,.7);
  }
  .network h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:10px}
  .network p{font-size:14.5px;color:var(--ink-2)}
  .region-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
  .region-grid li{
    text-align:center;font-size:13.5px;color:#2f3a5c;padding:10px 8px;border-radius:12px;background:#fff;
    border:1px solid rgba(20,28,51,.09);box-shadow:0 8px 18px -16px rgba(20,28,51,.7);
    transition:transform .2s ease,color .2s ease;
  }
  .region-grid li:hover{transform:translateY(-2px);color:#5b3cff}

  /* ---------- Cases ---------- */
  .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .case-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
    box-shadow:var(--shadow-sm);transition:transform .26s ease,box-shadow .26s ease;
  }
  .case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
  .case-media{position:relative;aspect-ratio:16/10;background:#f5f3ff;overflow:hidden}
  .case-media img{width:100%;height:100%;object-fit:contain}
  .case-body{padding:16px 18px 20px}
  .case-body h3{font-size:15.5px;margin-bottom:6px}
  .case-body p{font-size:13.5px;color:var(--muted)}

  /* ---------- Compare ---------- */
  .compare-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:24px;align-items:start}
  .score-card{
    border-radius:22px;padding:30px;color:#fff;text-align:center;
    background:linear-gradient(150deg,#2a1a63 0%,#5230c4 50%,#b23bb0 100%);
    box-shadow:0 30px 60px -34px rgba(46,27,120,.9);
  }
  .score-card h3{color:#fff;font-size:18px;margin-bottom:14px}
  .stars{font-size:23px;letter-spacing:4px;color:#ffd166;margin-bottom:12px}
  .score-num{font-size:52px;font-weight:800;letter-spacing:-1.5px;line-height:1}
  .score-num small{font-size:16px;font-weight:500;color:rgba(255,255,255,.78);margin-left:4px}
  .score-text{margin-top:12px;font-size:13.5px;color:rgba(255,255,255,.86)}
  .score-list{display:grid;gap:8px;margin-top:20px;text-align:left}
  .score-list li{
    font-size:13.5px;color:#fff;padding:9px 12px;border-radius:10px;
    background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.18);
  }
  .table-wrap{
    overflow-x:auto;-webkit-overflow-scrolling:touch;
    border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);
  }
  table{width:100%;border-collapse:collapse;min-width:600px;font-size:14.5px}
  thead th{
    background:linear-gradient(120deg,#5b3cff,#8a4bff 55%,#ff4f8b);
    color:#fff;font-weight:600;text-align:left;padding:14px 16px;white-space:nowrap;
  }
  tbody td{padding:13px 16px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
  tbody th{
    padding:13px 16px;border-bottom:1px solid var(--line);text-align:left;font-weight:600;color:var(--ink);
    background:#fbf9ff;white-space:nowrap;
  }
  tbody tr:last-child td,tbody tr:last-child th{border-bottom:none}
  tbody tr:hover td{background:#fcfaff}
  .td-good{color:#1a7f5a;font-weight:600}
  .table-note{font-size:12.5px;color:var(--muted);margin-top:10px}

  /* ---------- Reviews ---------- */
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .review{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
    box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:14px;
    transition:transform .26s ease,box-shadow .26s ease;
  }
  .review:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
  .review-text{font-size:14px;color:var(--ink-2);line-height:1.75}
  .review-user{display:flex;align-items:center;gap:10px;margin-top:auto}
  .avatar{
    width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:700;color:#fff;flex:0 0 auto;
    background:linear-gradient(135deg,#5b3cff,#ff4f8b);
  }
  .review-user strong{display:block;font-size:14px;color:var(--ink)}
  .review-user span{display:block;font-size:12.5px;color:var(--muted)}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm);
    overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease;
  }
  .faq-item[open]{border-color:rgba(91,60,255,.34);box-shadow:var(--shadow-md)}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:16px 20px;font-size:15.5px;font-weight:600;color:var(--ink);
    display:flex;align-items:center;justify-content:space-between;gap:14px;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";flex:0 0 auto;font-size:20px;line-height:1;color:#5b3cff;
    transition:transform .26s ease;font-weight:400;
  }
  .faq-item[open] summary::after{transform:rotate(45deg)}
  .faq-body{padding:0 20px 18px;font-size:14px;color:var(--ink-2);line-height:1.78}

  /* ---------- News / Wiki ---------- */
  .news-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:start}
  .wiki-list{display:grid;gap:14px}
  .wiki-card{
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;
    box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease;
  }
  .wiki-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
  .wiki-card h3{font-size:15.5px;margin-bottom:6px}
  .wiki-card p{font-size:13.8px;color:var(--ink-2)}
  .article-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
    box-shadow:var(--shadow-sm);
  }
  .article-card h3{font-size:16.5px;margin-bottom:12px}
  .article-list{display:grid;gap:2px}
  .article-list a{
    display:flex;align-items:center;gap:10px;padding:11px 10px;border-radius:10px;
    font-size:14px;color:var(--ink-2);border-bottom:1px dashed rgba(20,28,51,.1);
    transition:background-color .2s ease,color .2s ease,padding-left .2s ease;
  }
  .article-list li:last-child a{border-bottom:none}
  .article-list a::before{content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,#5b3cff,#ff4f8b)}
  .article-list a:hover{color:var(--brand);background:#faf7ff;padding-left:14px}
  .help-links{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
  .help-links a{
    font-size:13px;padding:7px 16px;border-radius:999px;background:#fff;color:#3b476a;
    border:1px solid rgba(20,28,51,.12);transition:all .22s ease;
  }
  .help-links a:hover{color:#fff;background:linear-gradient(120deg,#5b3cff,#ff4f8b);border-color:transparent;transform:translateY(-2px)}

  /* ---------- Promo ---------- */
  .promo{
    border-radius:26px;padding:34px;margin:0;
    background:linear-gradient(120deg,#2b1a66 0%,#4e2fbe 48%,#bb3f96 100%);
    box-shadow:0 34px 66px -40px rgba(43,26,102,.95);
    display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  }
  .promo h2{color:#fff;font-size:clamp(21px,2.6vw,28px);margin-bottom:8px}
  .promo p{color:rgba(255,255,255,.86);font-size:14.5px;max-width:660px}

  /* ---------- Contact ---------- */
  .contact-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:start}
  .form-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
    box-shadow:var(--shadow-sm);
  }
  .form-card h3{font-size:19px;margin-bottom:6px}
  .form-card>p{font-size:13.5px;color:var(--muted);margin-bottom:20px}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
  .field label{font-size:13.5px;font-weight:600;color:var(--ink-2)}
  .field input,.field select,.field textarea{
    width:100%;padding:11px 14px;border-radius:11px;border:1px solid rgba(20,28,51,.16);
    background:#fdfcff;font-size:14px;color:var(--ink);font-family:inherit;
    transition:border-color .22s ease,box-shadow .22s ease,background-color .22s ease;
  }
  .field textarea{min-height:112px;resize:vertical}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:#7a5cff;background:#fff;box-shadow:0 0 0 3px rgba(91,60,255,.14);
  }
  .form-submit{width:100%;margin-top:4px}
  .form-tip{font-size:12.5px;color:var(--muted);margin-top:12px;text-align:center}
  .contact-side{display:grid;gap:16px}
  .contact-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
    box-shadow:var(--shadow-sm);
  }
  .contact-card h3{font-size:16px;margin-bottom:14px}
  .contact-list{display:grid;gap:10px;font-size:14px;color:var(--ink-2)}
  .contact-list li{display:flex;gap:8px;align-items:baseline;flex-wrap:wrap}
  .contact-list li b{font-weight:600;color:var(--ink);flex:0 0 auto}
  .contact-list a{color:#5b3cff;word-break:break-all}
  .qr-box{display:flex;align-items:center;gap:16px}
  .qr-box img{
    width:110px;height:110px;object-fit:contain;border-radius:12px;background:#f8f6ff;
    padding:6px;border:1px solid rgba(20,28,51,.1);
  }
  .qr-box p{font-size:13.5px;color:var(--muted)}

  /* ---------- Footer ---------- */
  .site-footer{
    margin-top:64px;background:#101a30;color:#c6d0e4;
    padding:46px 0 0;
  }
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:32px;padding-bottom:30px}
  .footer-title{font-size:17px;font-weight:800;color:#fff;margin-bottom:12px;letter-spacing:.3px}
  .footer-desc{font-size:13.8px;color:#a8b5cd;line-height:1.78;max-width:380px}
  .footer-col h3{font-size:14.5px;color:#fff;margin-bottom:12px;font-weight:700}
  .footer-list{display:grid;gap:8px}
  .footer-list a,.footer-list span{font-size:13.5px;color:#a8b5cd;transition:color .2s ease}
  .footer-list a:hover{color:#ffffff}
  .footer-friend{
    border-top:1px solid rgba(255,255,255,.12);padding:18px 0;
    display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:13px;
  }
  .footer-friend span.label{color:#8fa0bd}
  .footer-friend a{color:#b9c6de;padding:4px 12px;border-radius:999px;background:rgba(255,255,255,.07);transition:all .2s ease}
  .footer-friend a:hover{color:#fff;background:rgba(91,60,255,.55)}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);padding:16px 0 20px;
    display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;justify-content:space-between;
    font-size:12.8px;color:#8fa0bd;
  }
  .footer-bottom a{color:#b9c6de}
  .footer-bottom a:hover{color:#fff}

  /* ---------- Float dock ---------- */
  .float-dock{position:fixed;right:18px;bottom:22px;z-index:80;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
  .float-btn{
    width:52px;height:52px;border-radius:16px;border:none;cursor:pointer;
    display:flex;align-items:center;justify-content:center;
    font-size:13px;font-weight:700;color:#fff;
    background:linear-gradient(140deg,#5b3cff,#ff4f8b);
    box-shadow:0 16px 30px -14px rgba(91,60,255,.9);
    transition:transform .22s ease,box-shadow .22s ease;
  }
  .float-btn:hover{transform:translateY(-3px);box-shadow:0 22px 38px -16px rgba(91,60,255,.95)}
  .float-top{background:linear-gradient(140deg,#1f2a4a,#3b476a);box-shadow:0 16px 30px -16px rgba(20,28,51,.9)}
  .kefu-panel{
    display:none;width:200px;background:#fff;border-radius:16px;padding:14px;text-align:center;
    border:1px solid rgba(20,28,51,.1);box-shadow:0 24px 46px -20px rgba(20,28,51,.6);
  }
  .kefu-panel.is-open{display:block;animation:pop .26s ease both}
  @keyframes pop{from{opacity:0;transform:translateY(8px) scale(.96)}to{opacity:1;transform:none}}
  .kefu-panel p{font-size:12.5px;color:var(--ink-2);margin-bottom:10px}
  .kefu-panel img{width:100%;height:auto;border-radius:10px;object-fit:contain}

  /* ---------- Reveal ---------- */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .62s ease,transform .62s ease}
  .reveal.is-visible{opacity:1;transform:translateY(0)}

  /* ---------- Responsive ---------- */
  @media (max-width:1080px){
    .nav{
      position:absolute;top:100%;left:0;right:0;margin-left:0;
      background:#fff;border-bottom:1px solid rgba(20,28,51,.1);
      box-shadow:0 22px 40px -26px rgba(20,28,51,.5);
      padding:8px 20px 16px;display:none;
    }
    .nav.is-open{display:block;animation:pop .24s ease both}
    .nav-links{flex-direction:column;align-items:stretch}
    .nav-links a{padding:12px 8px;font-size:15px;border-bottom:1px dashed rgba(20,28,51,.12);border-radius:8px}
    .nav-links li:last-child a{border-bottom:none}
    .nav-toggle{display:flex}
    .header-cta{display:none}
    .hero-inner{grid-template-columns:1fr;gap:32px}
    .hero-lead{max-width:none}
    .about-grid,.compare-grid,.news-grid,.contact-grid,.network{grid-template-columns:1fr}
    .grid-3,.scene-grid,.case-grid,.review-grid{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:720px){
    .section{padding:44px 0}
    .hero{padding:36px 0 12px}
    .metrics-grid{grid-template-columns:repeat(2,1fr);gap:10px;padding:18px}
    .metric{border-right:none;border-bottom:1px dashed rgba(20,28,51,.12);padding-bottom:12px}
    .metric:nth-child(3),.metric:nth-child(4){border-bottom:none;padding-bottom:0}
    .grid-3,.grid-2,.scene-grid,.case-grid,.review-grid,.steps,.form-row,.footer-grid{grid-template-columns:1fr}
    .panel-tint{padding:24px 18px}
    .promo{padding:26px 20px;flex-direction:column;align-items:flex-start}
    .promo .btn{width:100%}
    .qr-box{flex-direction:column;align-items:flex-start}
    .float-btn{width:46px;height:46px;border-radius:14px;font-size:12px}
    .kefu-panel{width:172px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
    .reveal{opacity:1;transform:none}
  }