:root{
    --c-primary:#ff5a3c;
    --c-primary-2:#ff8a3d;
    --c-accent:#6c5ce7;
    --c-accent-2:#00c8b5;
    --c-ink:#1c2230;
    --c-body:#4c5566;
    --c-muted:#7d8698;
    --c-line:#ece7e3;
    --c-bg:#fffaf6;
    --c-card:#ffffff;
    --shadow-sm:0 2px 10px rgba(28,34,48,.06);
    --shadow-md:0 12px 32px rgba(28,34,48,.09);
    --shadow-lg:0 22px 54px rgba(28,34,48,.13);
    --radius:18px;
    --container:1200px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
    color:var(--c-body);
    background:
      radial-gradient(900px 460px at 88% -6%,rgba(255,138,61,.16),transparent 62%),
      radial-gradient(760px 420px at 4% 4%,rgba(108,92,231,.13),transparent 60%),
      linear-gradient(180deg,#fffaf6 0%,#fdf6f2 44%,#fdfaf7 100%);
    background-attachment:fixed;
    line-height:1.7;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;height:auto;display:block}
  a{color:inherit;text-decoration:none}
  h1,h2,h3,h4{color:var(--c-ink);line-height:1.3;font-weight:800;letter-spacing:-.4px}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
  section{position:relative}
  .section-pad{padding:64px 0}

  /* ===== Header ===== */
  .site-header{position:sticky;top:0;z-index:60;backdrop-filter:blur(14px);background:rgba(255,250,246,.86);border-bottom:1px solid rgba(236,231,227,.9)}
  .header-inner{width:100%;max-width:var(--container);margin:0 auto;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .ai-page-logo{width:132px}
  .brand-name{font-weight:800;color:var(--c-ink);font-size:16px;letter-spacing:.2px;white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;list-style:none}
  .nav-links a{display:block;padding:8px 12px;font-size:14.5px;color:var(--c-body);font-weight:600;border-radius:9px;transition:color .2s,background .2s}
  .nav-links a:hover{color:var(--c-primary);background:rgba(255,90,60,.08)}
  .header-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:15px;padding:12px 24px;border-radius:999px;border:none;cursor:pointer;transition:transform .18s ease,box-shadow .25s ease,background .25s ease;font-family:inherit}
  .btn-primary{background:linear-gradient(120deg,var(--c-primary) 0%,var(--c-primary-2) 100%);color:#fff;box-shadow:0 10px 24px -8px rgba(255,90,60,.65)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px -10px rgba(255,90,60,.75)}
  .btn-ghost{background:#fff;color:var(--c-ink);border:1.5px solid var(--c-line);box-shadow:var(--shadow-sm)}
  .btn-ghost:hover{transform:translateY(-2px);border-color:rgba(255,90,60,.45);color:var(--c-primary)}
  .btn-accent{background:linear-gradient(120deg,var(--c-accent) 0%,var(--c-accent-2) 100%);color:#fff;box-shadow:0 10px 24px -8px rgba(108,92,231,.6)}
  .btn-accent:hover{transform:translateY(-2px)}
  .nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1.5px solid var(--c-line);background:#fff;align-items:center;justify-content:center;cursor:pointer}
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative;border-radius:2px}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px}
  .nav-toggle span::before{top:-6px}
  .nav-toggle span::after{top:6px}

  /* ===== Hero ===== */
  .hero{padding:66px 0 72px;overflow:hidden}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,90,60,.1);color:#e04122;font-size:13px;font-weight:700;padding:7px 16px;border-radius:999px;letter-spacing:.4px;margin-bottom:20px}
  .eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--c-primary);display:inline-block;box-shadow:0 0 0 4px rgba(255,90,60,.18)}
  .hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.18;letter-spacing:-1.2px;margin-bottom:20px}
  .hero h1 em{font-style:normal;background:linear-gradient(96deg,var(--c-primary) 10%,var(--c-accent) 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero-lead{font-size:16.5px;color:var(--c-body);max-width:560px;margin-bottom:26px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px}
  .hero-tags span{font-size:13px;font-weight:600;color:#5a6478;background:#fff;border:1px solid var(--c-line);padding:6px 14px;border-radius:999px;box-shadow:var(--shadow-sm)}

  .hero-panel{position:relative;border-radius:26px;padding:26px;background:linear-gradient(150deg,#ffffff 0%,#fff5ef 52%,#f3f1ff 100%);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow-lg);overflow:hidden}
  .hero-panel::before{content:"";position:absolute;width:230px;height:230px;border-radius:50%;background:radial-gradient(circle,rgba(255,138,61,.28),transparent 70%);top:-80px;right:-70px;animation:float 9s ease-in-out infinite}
  .hero-panel::after{content:"";position:absolute;width:190px;height:190px;border-radius:50%;background:radial-gradient(circle,rgba(108,92,231,.22),transparent 70%);bottom:-70px;left:-60px;animation:float 11s ease-in-out infinite reverse}
  @keyframes float{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(-12px,16px,0)}}
  .panel-title{position:relative;font-size:14px;font-weight:800;color:var(--c-ink);margin-bottom:16px;display:flex;align-items:center;gap:8px}
  .panel-title b{width:8px;height:8px;border-radius:2px;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));display:inline-block}
  .panel-stats{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
  .stat-card{background:rgba(255,255,255,.92);border:1px solid rgba(236,231,227,.9);border-radius:14px;padding:14px 14px;box-shadow:var(--shadow-sm)}
  .stat-card strong{display:block;font-size:22px;color:var(--c-ink);letter-spacing:-.6px}
  .stat-card span{font-size:12.5px;color:var(--c-muted);font-weight:600}
  .panel-list{position:relative;display:flex;flex-direction:column;gap:9px}
  .panel-list li{list-style:none;display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;color:#3d4657;background:rgba(255,255,255,.75);border-radius:11px;padding:9px 12px}
  .panel-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));flex:0 0 auto}

  /* ===== Section heading ===== */
  .sec-head{max-width:760px;margin-bottom:38px}
  .sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
  .sec-tag{display:inline-block;font-size:13px;font-weight:800;letter-spacing:1.4px;color:var(--c-primary);margin-bottom:12px}
  .sec-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
  .sec-head p{font-size:15.5px;color:var(--c-body)}

  /* ===== Metrics ===== */
  .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
  .metric{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease}
  .metric:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
  .metric strong{display:block;font-size:30px;letter-spacing:-1px;color:var(--c-ink);margin-bottom:4px}
  .metric strong i{font-style:normal;font-size:16px;color:var(--c-primary);margin-left:2px}
  .metric p{font-size:14px;color:var(--c-muted);font-weight:600}

  /* ===== About ===== */
  .about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
  .about-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:24px;padding:32px;box-shadow:var(--shadow-md)}
  .about-card h3{font-size:20px;margin-bottom:14px}
  .about-card p{font-size:15px;margin-bottom:14px}
  .about-card p:last-child{margin-bottom:0}
  .about-list{display:flex;flex-direction:column;gap:12px}
  .about-item{display:flex;gap:14px;background:var(--c-card);border:1px solid var(--c-line);border-radius:16px;padding:18px 20px;box-shadow:var(--shadow-sm);transition:transform .25s ease,border-color .25s ease}
  .about-item:hover{transform:translateX(4px);border-color:rgba(255,90,60,.4)}
  .about-item .idx{flex:0 0 38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;color:#fff;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2))}
  .about-item:nth-child(2) .idx{background:linear-gradient(135deg,var(--c-accent),#8f7bff)}
  .about-item:nth-child(3) .idx{background:linear-gradient(135deg,#00c8b5,#22d3b6)}
  .about-item:nth-child(4) .idx{background:linear-gradient(135deg,#ff9f43,#ffc26b)}
  .about-item h4{font-size:15.5px;margin-bottom:3px}
  .about-item p{font-size:14px;color:var(--c-muted);line-height:1.6}

  /* ===== Services ===== */
  .svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .svc-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease}
  .svc-card::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));transition:width .35s ease}
  .svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(255,90,60,.35)}
  .svc-card:hover::after{width:100%}
  .svc-ico{width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px;background:rgba(255,90,60,.1);color:var(--c-primary);font-weight:800}
  .svc-card:nth-child(3n+2) .svc-ico{background:rgba(108,92,231,.1);color:var(--c-accent)}
  .svc-card:nth-child(3n+3) .svc-ico{background:rgba(0,200,181,.12);color:#00a392}
  .svc-card h3{font-size:17px;margin-bottom:8px}
  .svc-card p{font-size:14px;color:var(--c-body);line-height:1.65}
  .svc-more{margin-top:28px;text-align:center}

  /* ===== Flow ===== */
  .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
  .flow-step{position:relative;background:linear-gradient(170deg,#fff 0%,#fff7f3 100%);border:1px solid var(--c-line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease}
  .flow-step:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
  .flow-step::before{counter-increment:step;content:"0" counter(step);font-size:13px;font-weight:800;color:var(--c-primary);background:rgba(255,90,60,.12);border-radius:8px;padding:4px 10px;display:inline-block;margin-bottom:14px;letter-spacing:1px}
  .flow-step h4{font-size:16px;margin-bottom:8px}
  .flow-step p{font-size:13.8px;color:var(--c-muted);line-height:1.65}

  /* ===== Scenarios ===== */
  .scen-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
  .scen-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:box-shadow .25s ease,transform .25s ease}
  .scen-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
  .scen-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
  .scen-top h3{font-size:16.5px}
  .badge{font-size:12px;font-weight:700;color:#c9401f;background:rgba(255,90,60,.12);padding:3px 10px;border-radius:999px;white-space:nowrap}
  .scen-card p{font-size:14px;color:var(--c-body)}

  /* ===== Network ===== */
  .network{background:linear-gradient(135deg,rgba(255,250,246,.6),rgba(243,241,255,.7));border:1px solid var(--c-line);border-radius:26px;padding:36px;box-shadow:var(--shadow-sm)}
  .network-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}
  .net-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
  .net-chips span{font-size:13.5px;font-weight:600;background:#fff;border:1px solid var(--c-line);border-radius:10px;padding:8px 14px;color:#3d4657;box-shadow:var(--shadow-sm)}
  .net-points{list-style:none;display:flex;flex-direction:column;gap:14px}
  .net-points li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--c-body)}
  .net-points li b{flex:0 0 24px;height:24px;border-radius:8px;background:linear-gradient(135deg,var(--c-accent),#8f7bff);color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:800}

  /* ===== Compare ===== */
  .compare-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;align-items:start}
  .score-card{background:linear-gradient(160deg,#fff 0%,#fff2ea 100%);border:1px solid rgba(255,90,60,.25);border-radius:24px;padding:32px;box-shadow:var(--shadow-md);text-align:center}
  .score-card .stars{font-size:22px;color:#ff9f18;letter-spacing:4px;margin-bottom:6px}
  .score-card .score{font-size:56px;font-weight:900;color:var(--c-primary);letter-spacing:-2px;line-height:1}
  .score-card .score small{font-size:16px;color:var(--c-muted);font-weight:700;margin-left:4px}
  .score-card p{font-size:14px;color:var(--c-body);margin-top:10px}
  .score-badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:18px}
  .score-badges span{font-size:12.5px;font-weight:700;background:#fff;border:1px solid var(--c-line);border-radius:999px;padding:5px 12px;color:#5a6478}
  .table-scroll{overflow-x:auto;border-radius:16px;border:1px solid var(--c-line);background:#fff;box-shadow:var(--shadow-sm)}
  table{width:100%;border-collapse:collapse;min-width:520px}
  th,td{padding:14px 16px;text-align:left;font-size:14px;border-bottom:1px solid var(--c-line)}
  th{background:#fdf5f1;color:var(--c-ink);font-weight:800;font-size:13.5px;white-space:nowrap}
  td:first-child{font-weight:700;color:var(--c-ink)}
  tbody tr:last-child td{border-bottom:none}
  tbody tr:hover{background:#fffaf7}
  .yes{color:#0f9d78;font-weight:700}
  .mid{color:#c08a12;font-weight:700}

  /* ===== Cases ===== */
  .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .case-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .28s ease,box-shadow .28s ease;display:flex;flex-direction:column}
  .case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
  .case-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#f4efeb}
  .case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
  .case-card:hover .case-media img{transform:scale(1.05)}
  .case-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
  .case-body h3{font-size:16px}
  .case-body p{font-size:13.8px;color:var(--c-muted);line-height:1.65}
  .case-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:6px}
  .case-tags span{font-size:12px;font-weight:600;color:#5a6478;background:#f7f3f0;border-radius:7px;padding:3px 9px}
  .case-single{display:grid;grid-template-columns:.85fr 1.15fr;gap:26px;align-items:center;margin-top:22px;background:var(--c-card);border:1px solid var(--c-line);border-radius:22px;padding:26px;box-shadow:var(--shadow-sm)}
  .case-single .pic{border-radius:16px;overflow:hidden;aspect-ratio:1/1;background:#f4efeb}
  .case-single .pic img{width:100%;height:100%;object-fit:cover}
  .case-single h3{font-size:19px;margin-bottom:10px}
  .case-single p{font-size:14.5px}

  /* ===== Token price ===== */
  .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .price-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);position:relative;transition:transform .25s ease,box-shadow .25s ease}
  .price-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
  .price-card.hot{border:1.5px solid rgba(255,90,60,.45);background:linear-gradient(170deg,#fff 0%,#fff6f1 100%)}
  .price-card .p-tag{position:absolute;top:16px;right:16px;font-size:11.5px;font-weight:800;color:#fff;background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));padding:3px 10px;border-radius:999px}
  .price-card h3{font-size:16px;margin-bottom:6px}
  .price-card .p-price{font-size:30px;font-weight:900;color:var(--c-ink);letter-spacing:-1px;margin:8px 0 4px}
  .price-card .p-price small{font-size:13px;color:var(--c-muted);font-weight:600}
  .price-card ul{list-style:none;display:flex;flex-direction:column;gap:9px;margin-top:14px}
  .price-card li{font-size:13.8px;color:var(--c-body);display:flex;gap:8px;align-items:flex-start}
  .price-card li::before{content:"✓";color:var(--c-primary);font-weight:800;font-size:13px;line-height:1.7}

  /* ===== Reviews ===== */
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .review-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease;display:flex;flex-direction:column;gap:12px}
  .review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
  .review-stars{color:#ff9f18;font-size:14px;letter-spacing:2px}
  .review-card blockquote{font-size:14.2px;color:var(--c-body);line-height:1.75}
  .review-user{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:6px}
  .avatar{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;color:#fff;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));flex:0 0 auto}
  .review-card:nth-child(2n) .avatar{background:linear-gradient(135deg,var(--c-accent),#8f7bff)}
  .review-card:nth-child(3n) .avatar{background:linear-gradient(135deg,#00c8b5,#22d3b6)}
  .review-user b{display:block;font-size:14px;color:var(--c-ink)}
  .review-user span{font-size:12.5px;color:var(--c-muted)}

  /* ===== Form ===== */
  .contact-wrap{display:grid;grid-template-columns:.95fr 1.05fr;gap:30px;align-items:start}
  .contact-info{background:linear-gradient(160deg,#1c2230 0%,#2a3550 100%);border-radius:24px;padding:34px;color:#e7ecf5;box-shadow:var(--shadow-lg)}
  .contact-info h3{color:#fff;font-size:21px;margin-bottom:10px}
  .contact-info p{font-size:14px;color:#b7c2d6;margin-bottom:22px}
  .contact-rows{display:flex;flex-direction:column;gap:14px}
  .contact-row{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:#dfe6f2}
  .contact-row i{flex:0 0 30px;height:30px;border-radius:9px;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;font-style:normal;font-size:13px;color:#ffb38c}
  .contact-row a{color:#ffb38c;word-break:break-all}
  .qr-box{margin-top:22px;display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:14px}
  .qr-box .qr{width:86px;height:86px;border-radius:10px;overflow:hidden;background:#fff;flex:0 0 auto}
  .qr-box .qr img{width:100%;height:100%;object-fit:cover}
  .qr-box b{display:block;color:#fff;font-size:14px;margin-bottom:4px}
  .qr-box span{font-size:12.8px;color:#b7c2d6}
  .form-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:24px;padding:32px;box-shadow:var(--shadow-md)}
  .form-card h3{font-size:20px;margin-bottom:6px}
  .form-card>p{font-size:14px;color:var(--c-muted);margin-bottom:22px}
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .field{display:flex;flex-direction:column;gap:7px}
  .field.full{grid-column:1/-1}
  .field label{font-size:13.5px;font-weight:700;color:var(--c-ink)}
  .field input,.field select,.field textarea{width:100%;font-family:inherit;font-size:14.5px;color:var(--c-ink);background:#fdfaf7;border:1.5px solid var(--c-line);border-radius:11px;padding:12px 14px;outline:none;transition:border-color .2s,box-shadow .2s,background .2s}
  .field input:focus,.field select:focus,.field textarea:focus{border-color:rgba(255,90,60,.6);box-shadow:0 0 0 4px rgba(255,90,60,.1);background:#fff}
  .field textarea{resize:vertical;min-height:110px}
  .form-submit{margin-top:20px;width:100%}
  .form-note{font-size:12.8px;color:var(--c-muted);margin-top:12px;text-align:center}

  /* ===== Articles ===== */
  .article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
  .article-item{display:flex;gap:14px;align-items:flex-start;background:var(--c-card);border:1px solid var(--c-line);border-radius:16px;padding:20px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
  .article-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(108,92,231,.35)}
  .article-item .dot{flex:0 0 10px;height:10px;border-radius:3px;margin-top:9px;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));transform:rotate(45deg)}
  .article-item h3{font-size:15.5px;margin-bottom:5px}
  .article-item p{font-size:13.6px;color:var(--c-muted);line-height:1.6}
  .article-item a{font-size:13px;font-weight:700;color:var(--c-primary);margin-top:6px;display:inline-block}

  /* ===== FAQ ===== */
  .faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:32px;align-items:start}
  .faq-aside{background:linear-gradient(160deg,#fff5ef 0%,#f3f1ff 100%);border:1px solid var(--c-line);border-radius:22px;padding:28px;box-shadow:var(--shadow-sm)}
  .faq-aside h3{font-size:19px;margin-bottom:10px}
  .faq-aside p{font-size:14px;color:var(--c-body);margin-bottom:18px}
  .faq-aside .btn{width:100%}
  .faq-list{display:flex;flex-direction:column;gap:12px}
  .faq-item{background:var(--c-card);border:1px solid var(--c-line);border-radius:14px;box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
  .faq-item.open{border-color:rgba(255,90,60,.4);box-shadow:var(--shadow-md)}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:17px 20px;background:none;border:none;cursor:pointer;text-align:left;font-family:inherit;font-size:15px;font-weight:700;color:var(--c-ink)}
  .faq-q .arrow{flex:0 0 22px;height:22px;border-radius:50%;background:#f7f1ec;color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:13px;transition:transform .3s ease,background .3s ease;font-weight:800}
  .faq-item.open .faq-q .arrow{transform:rotate(45deg);background:rgba(255,90,60,.16)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
  .faq-a p{padding:0 20px 18px;font-size:14.2px;color:var(--c-body);line-height:1.75}

  /* ===== Friend links ===== */
  .link-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
  .link-cloud a{font-size:13.5px;font-weight:600;color:#4c5566;background:#fff;border:1px solid var(--c-line);border-radius:999px;padding:8px 16px;box-shadow:var(--shadow-sm);transition:all .22s ease}
  .link-cloud a:hover{color:#fff;background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));border-color:transparent;transform:translateY(-2px)}

  /* ===== Footer ===== */
  .site-footer{background:#181e2b;color:#c3ccdb;margin-top:0}
  .footer-inner{width:100%;max-width:var(--container);margin:0 auto;padding:52px 24px 26px}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px}
  .footer-brand .ai-page-logo{width:128px;filter:brightness(0) invert(1);opacity:.95}
  .footer-brand p{font-size:13.8px;color:#9aa7bb;margin-top:14px;line-height:1.75;max-width:300px}
  .footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:800}
  .footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
  .footer-col a,.footer-col span{font-size:13.8px;color:#9aa7bb;transition:color .2s}
  .footer-col a:hover{color:#ffb38c}
  .footer-contact p{font-size:13.8px;color:#9aa7bb;margin-bottom:9px;line-height:1.6}
  .footer-contact b{color:#e7ecf5;font-weight:700}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.09);margin-top:38px;padding-top:20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
  .footer-bottom p{font-size:13px;color:#8b98ac}
  .footer-bottom nav{display:flex;flex-wrap:wrap;gap:16px}
  .footer-bottom nav a{font-size:13px;color:#8b98ac}
  .footer-bottom nav a:hover{color:#ffb38c}

  /* ===== Float ===== */
  .float-support{position:fixed;right:18px;bottom:24px;z-index:70;display:flex;flex-direction:column;gap:10px}
  .float-btn{width:50px;height:50px;border-radius:50%;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;box-shadow:0 12px 26px -8px rgba(28,34,48,.5);transition:transform .2s ease,opacity .3s ease;font-family:inherit;font-weight:800}
  .float-btn.wechat{background:linear-gradient(135deg,#22c55e,#16a34a)}
  .float-btn.top{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));opacity:0;pointer-events:none;font-size:15px}
  .float-btn.top.show{opacity:1;pointer-events:auto}
  .float-btn:hover{transform:translateY(-3px) scale(1.04)}
  .wechat-pop{position:fixed;right:80px;bottom:24px;z-index:71;width:200px;background:#fff;border:1px solid var(--c-line);border-radius:16px;box-shadow:var(--shadow-lg);padding:14px;opacity:0;pointer-events:none;transform:translateY(8px);transition:all .28s ease}
  .wechat-pop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
  .wechat-pop img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:10px}
  .wechat-pop p{font-size:12.5px;color:var(--c-body);text-align:center;margin-top:8px;font-weight:600}

  /* ===== Reveal ===== */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
  .reveal.in{opacity:1;transform:translateY(0)}

  /* ===== Responsive ===== */
  @media (max-width:1080px){
    .hero-grid{grid-template-columns:1fr;gap:32px}
    .hero-panel{max-width:520px}
    .about-wrap,.compare-wrap,.contact-wrap,.faq-wrap,.network-grid,.case-single{grid-template-columns:1fr}
    .metrics{grid-template-columns:repeat(2,1fr)}
    .svc-grid,.case-grid,.review-grid,.price-grid{grid-template-columns:repeat(2,1fr)}
    .flow{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:860px){
    .nav-links{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:rgba(255,250,246,.98);border-bottom:1px solid var(--c-line);padding:10px 16px 16px;box-shadow:var(--shadow-md)}
    .nav-links.open{display:flex}
    .nav-links a{padding:11px 12px;border-radius:10px}
    .nav-links li{border-bottom:1px solid rgba(236,231,227,.7)}
    .nav-links li:last-child{border-bottom:none}
    .nav-toggle{display:flex}
    .header-cta .btn-ghost{display:none}
    .header-inner{position:relative}
    .section-pad{padding:48px 0}
    .scen-grid,.article-list,.form-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:26px}
  }
  @media (max-width:640px){
    .container{padding:0 18px}
    .header-inner{padding:10px 18px}
    .hero{padding:44px 0 52px}
    .hero h1{letter-spacing:-.6px}
    .hero-panel{padding:20px}
    .panel-stats{grid-template-columns:1fr 1fr}
    .metrics{grid-template-columns:1fr 1fr;gap:12px}
    .metric{padding:18px 16px}
    .metric strong{font-size:24px}
    .svc-grid,.case-grid,.review-grid,.price-grid,.flow{grid-template-columns:1fr}
    .case-single{padding:20px}
    .contact-info,.form-card,.about-card,.network,.faq-aside{padding:22px}
    .footer-inner{padding:40px 18px 22px}
    .wechat-pop{right:18px;bottom:84px}
    .btn{padding:11px 20px;font-size:14px}
  }