* { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: #10203a;
    background: linear-gradient(180deg, #eef3ff 0%, #f5f8ff 30%, #eef4fc 100%);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
  }
  a { text-decoration: none; color: inherit; }
  img { display: block; max-width: 100%; height: auto; }
  ul { list-style: none; }
  .container { width: 100%; max-width: 1200px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }

  /* ===== NAV ===== */
  .site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.86);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(28,72,180,.12);
    box-shadow: 0 4px 24px rgba(28,72,180,.06);
  }
  .nav-bar {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; min-height: 68px;
  }
  .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .brand .ai-page-logo { width: 132px; }
  .nav-links { display: flex; align-items: center; gap: 0; flex-wrap: nowrap; overflow-x: auto; }
  .nav-links a {
    padding: 8px 11px; font-size: 14px; font-weight: 500; color: #24406e;
    border-radius: 8px; white-space: nowrap; transition: background .2s, color .2s;
  }
  .nav-links a:hover { background: rgba(28,82,208,.1); color: #1b46c2; }
  .nav-cta {
    display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0;
    padding: 10px 18px; border-radius: 10px; font-size: 14px; font-weight: 600;
    color: #fff; background: linear-gradient(135deg,#1a5bff,#0b2fb0);
    box-shadow: 0 8px 18px rgba(26,91,255,.3); transition: transform .2s, box-shadow .2s;
  }
  .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(26,91,255,.42); }
  .menu-toggle {
    display: none; width: 42px; height: 42px; border-radius: 10px; border: 1px solid rgba(28,72,180,.18);
    background: #fff; cursor: pointer; align-items: center; justify-content: center;
  }
  .menu-toggle span { display: block; width: 20px; height: 2px; background: #1a46b2; position: relative; }
  .menu-toggle span::before, .menu-toggle span::after {
    content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: #1a46b2;
  }
  .menu-toggle span::before { top: -6px; }
  .menu-toggle span::after { top: 6px; }

  /* ===== BUTTONS ===== */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 28px; border-radius: 12px; font-size: 15px; font-weight: 600;
    cursor: pointer; border: none; transition: transform .22s ease, box-shadow .22s ease, background .22s ease;
  }
  .btn-primary {
    color: #fff; background: linear-gradient(135deg,#1f66ff,#0a2ba8);
    box-shadow: 0 12px 26px rgba(26,91,255,.34);
  }
  .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 34px rgba(26,91,255,.44); }
  .btn-primary:active { transform: translateY(0); }
  .btn-ghost {
    color: #12335f; background: #fff; border: 1.5px solid rgba(28,82,208,.28);
  }
  .btn-ghost:hover { background: #eef4ff; transform: translateY(-2px); box-shadow: 0 10px 22px rgba(28,82,208,.14); }

  /* ===== HERO ===== */
  .hero {
    position: relative; overflow: hidden; padding: 76px 0 84px;
    background:
      radial-gradient(900px 480px at 78% 8%, rgba(48,124,255,.22), transparent 62%),
      radial-gradient(700px 420px at 8% 88%, rgba(10,44,168,.14), transparent 60%),
      linear-gradient(155deg,#f2f7ff 0%, #e8f0ff 52%, #f6f9ff 100%);
  }
  .hero::before {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background-image:
      linear-gradient(rgba(28,82,208,.06) 1px, transparent 1px),
      linear-gradient(90deg, rgba(28,82,208,.06) 1px, transparent 1px);
    background-size: 54px 54px;
    mask-image: radial-gradient(circle at 50% 40%, #000 20%, transparent 78%);
    -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 20%, transparent 78%);
  }
  .hero .container { position: relative; z-index: 2; }
  .hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
  .eyebrow {
    display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 999px;
    background: rgba(28,82,208,.1); color: #1540a8; font-size: 13px; font-weight: 600;
    border: 1px solid rgba(28,82,208,.18);
  }
  .eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: #1f66ff; animation: pulse 2s infinite; }
  @keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.4;transform:scale(1.4)} }
  .hero h1 {
    margin: 22px 0 18px; font-size: clamp(28px, 4.2vw, 52px); line-height: 1.2;
    font-weight: 800; color: #0b1f42; letter-spacing: -.5px;
  }
  .hero h1 em {
    font-style: normal;
    color: #1a5bff;
    position: relative;
  }
  .hero h1 em::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 10px;
    background: linear-gradient(90deg, rgba(31,102,255,.24), rgba(31,102,255,.04));
    border-radius: 6px; z-index: -1;
  }
  .hero-lead { font-size: 16px; color: #38507a; max-width: 560px; margin-bottom: 30px; }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }
  .hero-stats { display: flex; flex-wrap: wrap; gap: 30px; padding-top: 26px; border-top: 1px dashed rgba(28,82,208,.24); }
  .hero-stats .stat strong { display: block; font-size: 24px; font-weight: 800; color: #12335f; }
  .hero-stats .stat span { font-size: 13px; color: #5a7196; }

  .hero-panel {
    position: relative; padding: 26px; border-radius: 22px;
    background: linear-gradient(160deg, #ffffff 0%, #f0f6ff 100%);
    border: 1px solid rgba(28,82,208,.16);
    box-shadow: 0 26px 60px rgba(17,52,140,.14);
    animation: floatY 6s ease-in-out infinite;
  }
  @keyframes floatY { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
  .hero-panel h2 { font-size: 15px; color: #12335f; margin-bottom: 16px; font-weight: 700; letter-spacing: .3px; }
  .panel-chips { display: flex; flex-wrap: wrap; gap: 8px; }
  .panel-chips span {
    padding: 6px 12px; border-radius: 8px; font-size: 12.5px; font-weight: 600;
    color: #17408f; background: #e6efff; border: 1px solid rgba(28,82,208,.16);
  }
  .panel-list { margin-top: 18px; display: grid; gap: 10px; }
  .panel-list div {
    display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: 12px;
    background: #fff; border: 1px solid rgba(28,82,208,.12); font-size: 13.5px; color: #2b4671; font-weight: 500;
  }
  .panel-list div i {
    width: 22px; height: 22px; border-radius: 7px; flex-shrink: 0;
    background: linear-gradient(135deg,#1f66ff,#0a2ba8); display: inline-flex;
    align-items: center; justify-content: center; color: #fff; font-style: normal; font-size: 12px; font-weight: 700;
  }

  /* ===== SECTION BASE ===== */
  section { padding: 76px 0; }
  .sec-head { text-align: center; max-width: 720px; margin: 0 auto 44px; }
  .sec-tag {
    display: inline-block; padding: 6px 14px; border-radius: 999px; font-size: 12.5px; font-weight: 700;
    color: #1540a8; background: rgba(28,82,208,.1); letter-spacing: .5px; margin-bottom: 14px;
  }
  .sec-head h2 { font-size: clamp(23px, 3vw, 34px); font-weight: 800; color: #0b1f42; letter-spacing: -.3px; }
  .sec-head p { margin-top: 12px; font-size: 15px; color: #50688f; }

  /* ===== ABOUT ===== */
  .about-wrap {
    display: grid; grid-template-columns: 1.05fr .95fr; gap: 46px; align-items: center;
  }
  .about-media { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .about-media .media-box { border-radius: 16px; overflow: hidden; border: 1px solid rgba(28,82,208,.14); box-shadow: 0 14px 32px rgba(17,52,140,.1); background: #fff; }
  .about-media .media-box.wide { grid-column: span 2; }
  .about-media .media-box img { width: 100%; object-fit: cover; transition: transform .5s ease; }
  .about-media .media-box:hover img { transform: scale(1.03); }
  .about-text h2 { font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; color: #0b1f42; margin-bottom: 16px; }
  .about-text p { color: #40587f; font-size: 15px; margin-bottom: 14px; }
  .about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; }
  .about-points div {
    padding: 14px 16px; border-radius: 12px; background: #fff; border: 1px solid rgba(28,82,208,.13);
    font-size: 13.5px; font-weight: 600; color: #1d3c6b;
    box-shadow: 0 6px 16px rgba(17,52,140,.05); transition: transform .25s, box-shadow .25s;
  }
  .about-points div:hover { transform: translateY(-3px); box-shadow: 0 14px 26px rgba(17,52,140,.12); }

  /* ===== METRICS ===== */
  .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
  .metric {
    padding: 26px 20px; border-radius: 18px; text-align: center;
    background: linear-gradient(160deg,#ffffff,#eef4ff);
    border: 1px solid rgba(28,82,208,.14); box-shadow: 0 12px 28px rgba(17,52,140,.07);
    transition: transform .25s, box-shadow .25s;
  }
  .metric:hover { transform: translateY(-4px); box-shadow: 0 20px 38px rgba(17,52,140,.14); }
  .metric strong { display: block; font-size: 30px; font-weight: 800; color: #1a5bff; letter-spacing: -.5px; }
  .metric span { font-size: 13.5px; color: #4c6590; font-weight: 500; }

  /* ===== SERVICES ===== */
  .services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .svc-card {
    padding: 26px 22px; border-radius: 18px; background: #fff;
    border: 1px solid rgba(28,82,208,.13);
    box-shadow: 0 10px 26px rgba(17,52,140,.06);
    transition: transform .28s ease, box-shadow .28s ease, border-color .28s;
    position: relative; overflow: hidden;
  }
  .svc-card::before {
    content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
    background: linear-gradient(90deg,#1f66ff,#5fa0ff); transform: scaleX(0); transform-origin: left;
    transition: transform .35s ease;
  }
  .svc-card:hover { transform: translateY(-6px); box-shadow: 0 22px 44px rgba(17,52,140,.14); border-color: rgba(28,82,208,.26); }
  .svc-card:hover::before { transform: scaleX(1); }
  .svc-icon {
    width: 46px; height: 46px; border-radius: 13px; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg,#e7f0ff,#d6e6ff); color: #1a5bff; font-weight: 800; font-size: 18px; margin-bottom: 16px;
  }
  .svc-card h3 { font-size: 17px; color: #0b1f42; margin-bottom: 9px; font-weight: 700; }
  .svc-card p { font-size: 13.8px; color: #50688f; }

  /* ===== FLOW ===== */
  .flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
  .flow-step {
    position: relative; padding: 24px 18px; border-radius: 16px; background: #fff;
    border: 1px solid rgba(28,82,208,.13); box-shadow: 0 10px 24px rgba(17,52,140,.06);
    transition: transform .25s, box-shadow .25s;
  }
  .flow-step:hover { transform: translateY(-5px); box-shadow: 0 18px 34px rgba(17,52,140,.13); }
  .flow-step .num {
    width: 32px; height: 32px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 14px; color: #fff; background: linear-gradient(135deg,#1f66ff,#0a2ba8); margin-bottom: 14px;
  }
  .flow-step h3 { font-size: 15px; color: #0b1f42; margin-bottom: 7px; }
  .flow-step p { font-size: 13px; color: #5a7196; }

  /* ===== SOLUTIONS ===== */
  .sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .sol-item {
    display: flex; gap: 16px; padding: 24px; border-radius: 18px; background: #fff;
    border: 1px solid rgba(28,82,208,.13); box-shadow: 0 10px 26px rgba(17,52,140,.06);
    transition: transform .25s, box-shadow .25s;
  }
  .sol-item:hover { transform: translateY(-4px); box-shadow: 0 20px 40px rgba(17,52,140,.13); }
  .sol-badge {
    flex-shrink: 0; width: 48px; height: 48px; border-radius: 14px;
    background: linear-gradient(135deg,#1f66ff,#0a2ba8); color: #fff;
    display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 15px;
  }
  .sol-item h3 { font-size: 16px; color: #0b1f42; margin-bottom: 7px; }
  .sol-item p { font-size: 13.8px; color: #50688f; }

  /* ===== NETWORK / TIMELINE ===== */
  .network-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
  .timeline { position: relative; padding-left: 26px; }
  .timeline::before {
    content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px;
    background: linear-gradient(180deg,#1f66ff,rgba(31,102,255,.15));
  }
  .tl-item { position: relative; padding-bottom: 24px; }
  .tl-item:last-child { padding-bottom: 0; }
  .tl-item::before {
    content: ""; position: absolute; left: -26px; top: 6px; width: 12px; height: 12px; border-radius: 50%;
    background: #fff; border: 3px solid #1a5bff; box-shadow: 0 0 0 4px rgba(31,102,255,.12);
  }
  .tl-item h3 { font-size: 15.5px; color: #0b1f42; margin-bottom: 5px; }
  .tl-item p { font-size: 13.6px; color: #5a7196; }
  .net-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .net-card {
    padding: 22px 18px; border-radius: 16px; background: linear-gradient(160deg,#fff,#eef4ff);
    border: 1px solid rgba(28,82,208,.14); box-shadow: 0 10px 24px rgba(17,52,140,.06);
    transition: transform .25s, box-shadow .25s;
  }
  .net-card:hover { transform: translateY(-4px); box-shadow: 0 18px 34px rgba(17,52,140,.13); }
  .net-card strong { display: block; font-size: 22px; color: #1a5bff; font-weight: 800; }
  .net-card span { font-size: 13.5px; color: #4c6590; }

  /* ===== CASES ===== */
  .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
  .case-card {
    border-radius: 18px; overflow: hidden; background: #fff;
    border: 1px solid rgba(28,82,208,.13); box-shadow: 0 12px 28px rgba(17,52,140,.07);
    transition: transform .3s ease, box-shadow .3s ease;
  }
  .case-card:hover { transform: translateY(-6px); box-shadow: 0 24px 46px rgba(17,52,140,.15); }
  .case-thumb { position: relative; overflow: hidden; background: #e9f1ff; }
  .case-thumb img { width: 100%; object-fit: cover; transition: transform .5s ease; }
  .case-card:hover .case-thumb img { transform: scale(1.05); }
  .case-body { padding: 20px; }
  .case-body h3 { font-size: 16px; color: #0b1f42; margin-bottom: 8px; }
  .case-body p { font-size: 13.6px; color: #50688f; }
  .case-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
  .case-tags span {
    font-size: 12px; padding: 4px 10px; border-radius: 999px; color: #17408f; background: #e6efff; font-weight: 600;
  }

  /* ===== COMPARE TABLE ===== */
  .compare-wrap { overflow-x: auto; border-radius: 18px; border: 1px solid rgba(28,82,208,.15); background: #fff; box-shadow: 0 14px 34px rgba(17,52,140,.08); }
  table.compare { width: 100%; border-collapse: collapse; min-width: 720px; }
  table.compare th, table.compare td { padding: 15px 18px; text-align: left; font-size: 14px; border-bottom: 1px solid #eaf0fb; }
  table.compare thead th { background: linear-gradient(135deg,#1740b5,#1f66ff); color: #fff; font-weight: 700; font-size: 14.5px; }
  table.compare tbody tr:nth-child(even) { background: #f7faff; }
  table.compare tbody tr:hover { background: #eef4ff; }
  table.compare td.highlight { color: #1a5bff; font-weight: 700; }
  .compare-badge {
    display: inline-flex; align-items: center; gap: 8px; margin-bottom: 20px; flex-wrap: wrap;
  }
  .score-pill {
    display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 999px;
    background: linear-gradient(135deg,#fff5e0,#ffe9b8); color: #8a5a00; font-weight: 700; font-size: 14px;
    border: 1px solid rgba(200,140,0,.28);
  }
  .score-pill.blue { background: linear-gradient(135deg,#e6efff,#d6e6ff); color: #1540a8; border-color: rgba(28,82,208,.24); }
  .stars { color: #f5a623; letter-spacing: 2px; font-size: 15px; }

  /* ===== FAQ ===== */
  .faq-wrap { max-width: 860px; margin: 0 auto; display: grid; gap: 12px; }
  .faq-item {
    background: #fff; border: 1px solid rgba(28,82,208,.13); border-radius: 14px;
    overflow: hidden; transition: box-shadow .25s, border-color .25s;
  }
  .faq-item.open { border-color: rgba(28,82,208,.32); box-shadow: 0 14px 30px rgba(17,52,140,.1); }
  .faq-q {
    width: 100%; text-align: left; padding: 18px 22px; background: transparent; border: none;
    font-size: 15px; font-weight: 600; color: #0b1f42; cursor: pointer;
    display: flex; justify-content: space-between; align-items: center; gap: 16px; font-family: inherit;
  }
  .faq-q .ico {
    flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; background: #e6efff; color: #1a5bff;
    display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 700;
    transition: transform .3s ease, background .3s;
  }
  .faq-item.open .faq-q .ico { transform: rotate(45deg); background: #1a5bff; color: #fff; }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
  .faq-a p { padding: 0 22px 20px; font-size: 14px; color: #50688f; }

  /* ===== REVIEWS ===== */
  .reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .review-card {
    padding: 24px; border-radius: 18px; background: #fff; border: 1px solid rgba(28,82,208,.13);
    box-shadow: 0 10px 26px rgba(17,52,140,.06); transition: transform .25s, box-shadow .25s;
    display: flex; flex-direction: column; gap: 14px;
  }
  .review-card:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(17,52,140,.13); }
  .review-top { display: flex; align-items: center; gap: 12px; }
  .avatar {
    width: 42px; height: 42px; border-radius: 12px; flex-shrink: 0;
    background: linear-gradient(135deg,#1f66ff,#0a2ba8); color: #fff;
    display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px;
  }
  .review-top strong { display: block; font-size: 14.5px; color: #0b1f42; }
  .review-top span { font-size: 12.5px; color: #7189ad; }
  .review-card p { font-size: 13.8px; color: #40587f; }
  .review-card .stars { font-size: 13px; }

  /* ===== TOKEN PRICE ===== */
  .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .price-card {
    padding: 26px 22px; border-radius: 18px; background: #fff;
    border: 1px solid rgba(28,82,208,.14); box-shadow: 0 12px 28px rgba(17,52,140,.07);
    transition: transform .25s, box-shadow .25s;
  }
  .price-card:hover { transform: translateY(-5px); box-shadow: 0 22px 42px rgba(17,52,140,.14); }
  .price-card h3 { font-size: 16px; color: #0b1f42; margin-bottom: 6px; }
  .price-card .price { font-size: 26px; font-weight: 800; color: #1a5bff; margin: 8px 0 4px; }
  .price-card .price small { font-size: 13px; font-weight: 500; color: #7189ad; }
  .price-card p { font-size: 13.5px; color: #50688f; }

  /* ===== ARTICLE ===== */
  .article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .article-card {
    padding: 22px; border-radius: 16px; background: #fff; border: 1px solid rgba(28,82,208,.13);
    box-shadow: 0 8px 22px rgba(17,52,140,.05); transition: transform .25s, box-shadow .25s;
  }
  .article-card:hover { transform: translateY(-4px); box-shadow: 0 18px 34px rgba(17,52,140,.12); }
  .article-card h3 { font-size: 15px; color: #0b1f42; margin-bottom: 8px; }
  .article-card p { font-size: 13.4px; color: #5a7196; margin-bottom: 12px; }
  .article-card a { font-size: 13px; color: #1a5bff; font-weight: 600; }
  .article-card a:hover { text-decoration: underline; }

  /* ===== FORM ===== */
  .form-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
  .form-info h2 { font-size: clamp(22px,2.6vw,30px); color: #0b1f42; font-weight: 800; margin-bottom: 16px; }
  .form-info p { font-size: 14.5px; color: #40587f; margin-bottom: 18px; }
  .contact-list { display: grid; gap: 12px; }
  .contact-list li {
    display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 12px;
    background: #fff; border: 1px solid rgba(28,82,208,.13); font-size: 14px; color: #2b4671; font-weight: 500;
  }
  .contact-list li b { color: #1a5bff; font-weight: 700; }
  .qr-box { margin-top: 20px; padding: 16px; background: #fff; border-radius: 14px; border: 1px solid rgba(28,82,208,.13); width: fit-content; }
  .qr-box img { width: 140px; margin: 0 auto; }
  .qr-box span { display: block; text-align: center; font-size: 12.5px; color: #50688f; margin-top: 8px; }

  form.need-form {
    padding: 30px; border-radius: 20px; background: #fff;
    border: 1px solid rgba(28,82,208,.15); box-shadow: 0 18px 44px rgba(17,52,140,.1);
    display: grid; gap: 16px;
  }
  .field label { display: block; font-size: 13.5px; font-weight: 600; color: #1d3c6b; margin-bottom: 7px; }
  .field input, .field select, .field textarea {
    width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid #d6e2f6;
    background: #f9fbff; font-size: 14px; color: #10203a; font-family: inherit; outline: none;
    transition: border-color .2s, box-shadow .2s, background .2s;
  }
  .field input:focus, .field select:focus, .field textarea:focus {
    border-color: #1a5bff; background: #fff; box-shadow: 0 0 0 3px rgba(26,91,255,.12);
  }
  .field textarea { resize: vertical; min-height: 96px; }
  form.need-form .btn { width: 100%; }

  /* ===== LINKS / FOOTER ===== */
  .link-cloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
  .link-cloud a {
    padding: 8px 16px; border-radius: 999px; font-size: 13px; font-weight: 600; color: #24406e;
    background: #fff; border: 1px solid rgba(28,82,208,.16); transition: all .2s;
  }
  .link-cloud a:hover { background: #1a5bff; color: #fff; border-color: #1a5bff; transform: translateY(-2px); }
  .footer-links { display: flex; flex-wrap: wrap; gap: 10px; }

  .site-footer {
    background: #0c1f42; color: #c5d5ee; padding: 54px 0 0;
  }
  .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; }
  .footer-brand .ai-page-logo { width: 140px; margin-bottom: 16px;  }
  .footer-brand p { font-size: 13.6px; color: #a9bfde; line-height: 1.8; }
  .footer-col h3 { font-size: 15px; color: #fff; margin-bottom: 16px; font-weight: 700; }
  .footer-col ul { display: grid; gap: 10px; }
  .footer-col ul li a { font-size: 13.5px; color: #a9bfde; transition: color .2s; }
  .footer-col ul li a:hover { color: #6ea8ff; }
  .footer-col p { font-size: 13.5px; color: #a9bfde; margin-bottom: 8px; }
  .footer-bottom {
    margin-top: 40px; border-top: 1px solid rgba(197,213,238,.16); padding: 20px 0;
    display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
    font-size: 12.8px; color: #8ea8ca;
  }
  .footer-bottom a { color: #8ea8ca; }
  .footer-bottom a:hover { color: #6ea8ff; }

  /* ===== FLOAT ===== */
  .float-btns { position: fixed; right: 18px; bottom: 24px; z-index: 200; display: flex; flex-direction: column; gap: 12px; }
  .float-btns button, .float-btns a {
    width: 48px; height: 48px; border-radius: 14px; border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700;
    color: #fff; background: linear-gradient(135deg,#1f66ff,#0a2ba8);
    box-shadow: 0 10px 24px rgba(26,91,255,.36); transition: transform .2s, opacity .2s;
    font-family: inherit;
  }
  .float-btns button:hover, .float-btns a:hover { transform: translateY(-3px); }
  #backTop { opacity: 0; pointer-events: none; }
  #backTop.show { opacity: 1; pointer-events: auto; }
  .kefu-tip {
    position: fixed; right: 78px; bottom: 96px; z-index: 201; background: #fff; border-radius: 14px;
    padding: 14px; box-shadow: 0 18px 44px rgba(17,52,140,.22); border: 1px solid rgba(28,82,208,.16);
    opacity: 0; transform: translateY(10px); pointer-events: none; transition: all .3s;
  }
  .kefu-tip.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .kefu-tip img { width: 130px; border-radius: 8px; }
  .kefu-tip span { display: block; text-align: center; font-size: 12px; color: #50688f; margin-top: 6px; }

  /* ===== REVEAL ANIM ===== */
  .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
  .reveal.in { opacity: 1; transform: translateY(0); }

  /* ===== RESPONSIVE ===== */
  @media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero-panel { animation: none; }
    .about-wrap { grid-template-columns: 1fr; gap: 32px; }
    .services-grid, .case-grid, .reviews-grid, .price-grid, .article-grid { grid-template-columns: repeat(2, 1fr); }
    .flow { grid-template-columns: repeat(3, 1fr); }
    .metrics { grid-template-columns: repeat(2, 1fr); }
    .network-wrap, .form-wrap { grid-template-columns: 1fr; gap: 30px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
  }
  @media (max-width: 860px) {
    .nav-links {
      display: none; position: absolute; top: 68px; left: 0; right: 0;
      flex-direction: column; background: #fff; padding: 12px 20px 20px;
      box-shadow: 0 18px 40px rgba(17,52,140,.16); border-bottom: 1px solid rgba(28,82,208,.12);
      gap: 0; overflow-x: visible;
    }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 11px 8px; font-size: 14.5px; width: 100%; border-radius: 8px; }
    .menu-toggle { display: flex; }
    .nav-cta { display: none; }
  }
  @media (max-width: 640px) {
    section { padding: 54px 0; }
    .services-grid, .case-grid, .reviews-grid, .price-grid, .article-grid,
    .sol-grid, .net-cards, .about-points { grid-template-columns: 1fr; }
    .flow { grid-template-columns: 1fr 1fr; }
    .metrics { grid-template-columns: 1fr 1fr; }
    .hero { padding: 50px 0 60px; }
    .hero-stats { gap: 20px; }
    .hero-stats .stat strong { font-size: 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    form.need-form { padding: 22px; }
    .hero-panel { padding: 20px; }
    .about-media { grid-template-columns: 1fr; }
    .about-media .media-box.wide { grid-column: span 1; }
  }