:root {
    --primary: #4861E4;
    --accent: #8A45EB;
    --bg: #F7F8FC;
    --text: #1A1D2B;
    --text-mid: #454A63;
    --text-dim: #6A7089;
    --line: rgba(26,29,43,.09);
    --line-strong: rgba(72,97,228,.16);
    --card: rgba(255,255,255,.58);
    --radius: 18px;
    --font: "Inter", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }

  body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
      radial-gradient(ellipse 68% 52% at 10% 4%, rgba(72,97,228,.13), transparent 62%),
      radial-gradient(ellipse 56% 44% at 90% 12%, rgba(138,69,235,.11), transparent 64%),
      radial-gradient(ellipse 60% 48% at 52% 104%, rgba(72,97,228,.08), transparent 66%),
      radial-gradient(ellipse 44% 36% at 82% 74%, rgba(232,120,190,.07), transparent 62%),
      radial-gradient(ellipse 40% 34% at 16% 82%, rgba(80,200,200,.07), transparent 62%),
      linear-gradient(180deg, #FBFBFE 0%, #F6F7FC 50%, #F4F5FB 100%);
  }
  body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image:
      linear-gradient(rgba(36,48,102,.05) 1px, transparent 1px),
      linear-gradient(90deg, rgba(36,48,102,.05) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse 82% 72% at 50% 28%, #000 28%, transparent 76%);
    -webkit-mask-image: radial-gradient(ellipse 82% 72% at 50% 28%, #000 28%, transparent 76%);
    pointer-events: none;
  }

  ::selection { background: rgba(72,97,228,.18); color: #11142A; }
  a { color: inherit; text-decoration: none; }
  .wrap { max-width: 1080px; margin: 0 auto; padding: 0 28px; }

  header {
    position: sticky; top: 0; z-index: 50;
    backdrop-filter: blur(18px) saturate(150%);
    -webkit-backdrop-filter: blur(18px) saturate(150%);
    background: rgba(249,250,253,.72);
    border-bottom: 1px solid var(--line);
  }
  .nav { display: flex; align-items: center; justify-content: space-between; height: 62px; }
  .logo { display: inline-flex; align-items: center; gap: 9px; flex-shrink: 0; }
  .logo img { display: block; width: 30px; height: 30px; border-radius: 9px; }
  .logo-text { font-size: 17px; font-weight: 700; letter-spacing: -.3px; color: #14172A; line-height: 1; }
  .logo-text .sub { font-size: 12.5px; font-weight: 500; color: var(--text-dim); margin-left: 3px; letter-spacing: 0; }
  .nav-links { display: flex; gap: 26px; font-size: 13.5px; color: var(--text-dim); }
  .nav-links a { transition: color .2s; }
  .nav-links a:hover { color: var(--primary); }
  .nav-cta {
    font-size: 13px; font-weight: 600; padding: 8px 18px; border-radius: 999px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff; box-shadow: 0 6px 20px rgba(72,97,228,.28);
    transition: transform .2s, box-shadow .2s; white-space: nowrap;
  }
  .nav-cta:hover { transform: translateY(-1px); box-shadow: 0 10px 28px rgba(72,97,228,.4); }
  @media (max-width: 860px) { .nav-links { display: none; } }

  section { padding: 23px 0; position: relative; }
  .eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 11.5px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase;
    color: var(--primary); margin-bottom: 8px;
  }
  .eyebrow::before { content: ""; width: 18px; height: 1px; background: linear-gradient(90deg, var(--primary), var(--accent)); }
  h2.section-title {
    font-size: clamp(22px, 3vw, 30px); line-height: 1.24;
    letter-spacing: -.8px; font-weight: 750; margin-bottom: 8px; color: #12152A;
  }
  .section-lead { color: var(--text-dim); font-size: 14.5px; max-width: 660px; }
  .gradient-text {
    background: linear-gradient(105deg, #161A30 8%, var(--primary) 52%, var(--accent) 96%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
  }

  .hero { padding: 25px 0 20px; }
  .hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 36px; align-items: center; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-mid);
    border: 1px solid var(--line-strong); border-radius: 999px;
    padding: 6px 14px 6px 8px; margin-bottom: 16px;
    background: rgba(255,255,255,.66); box-shadow: 0 2px 10px rgba(72,97,228,.06);
  }
  .hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: #1BBF9C; box-shadow: 0 0 0 3px rgba(27,191,156,.14); animation: pulse 2.4s infinite; }
  @keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }
  h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.16; letter-spacing: -1.4px; font-weight: 800; margin-bottom: 14px; }
  .hero p.lead { color: var(--text-mid); font-size: 15.5px; max-width: 540px; margin-bottom: 22px; }
  .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
  .btn-primary {
    display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; border-radius: 12px;
    font-size: 14.5px; font-weight: 650; background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff; box-shadow: 0 8px 26px rgba(72,97,228,.32); transition: transform .2s, box-shadow .2s;
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(72,97,228,.44); }
  .btn-ghost {
    display: inline-flex; align-items: center; gap: 8px; padding: 11px 20px; border-radius: 12px;
    font-size: 14px; color: var(--text-mid); border: 1px solid rgba(26,29,43,.14);
    background: rgba(255,255,255,.6); transition: border-color .2s, color .2s, background .2s;
  }
  .btn-ghost:hover { border-color: rgba(138,69,235,.42); color: var(--primary); background: #fff; }

  .hero-stats { display: flex; gap: 32px; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); }
  .hero-stats .num { font-size: 21px; font-weight: 750; letter-spacing: -.6px; background: linear-gradient(120deg, #161A30, var(--primary)); -webkit-background-clip: text; background-clip: text; color: transparent; }
  .hero-stats .lab { font-size: 12px; color: var(--text-dim); margin-top: 2px; }

  .terminal {
    border-radius: var(--radius); overflow: hidden; border: 1px solid rgba(72,97,228,.22);
    background: linear-gradient(165deg, #191E33, #10131F);
    box-shadow: 0 30px 70px -26px rgba(38,48,110,.5), 0 2px 0 rgba(255,255,255,.6) inset;
  }
  .terminal-bar { display: flex; align-items: center; gap: 8px; padding: 11px 16px; border-bottom: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.03); }
  .terminal-bar i { width: 9px; height: 9px; border-radius: 50%; display: block; }
  .terminal-bar i:nth-child(1){background:#ff5f57}
  .terminal-bar i:nth-child(2){background:#febc2e}
  .terminal-bar i:nth-child(3){background:#28c840}
  .terminal-bar span { margin-left: auto; font-size: 11px; color: #7b83a0; font-family: ui-monospace, monospace; }
  .terminal-body { padding: 18px 20px 22px; font-family: "JetBrains Mono", "Fira Code", ui-monospace, monospace; font-size: 12.5px; line-height: 1.9; color: #D5DAEB; }
  .tk-com { color: #6B7391; }
  .tk-key { color: #C4A0FF; }
  .tk-str { color: #6EE7D7; }
  .tk-fn { color: #93AEFF; }
  .tk-num { color: #F5B6F0; }
  .cursor-blink { display: inline-block; width: 7px; height: 15px; background: #93AEFF; vertical-align: -2px; animation: blink 1.1s step-end infinite; }
  @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

  @media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 28px; }
    .hero { padding-top: 20px; }
  }

  .intro-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 18px; }
  .intro-col { border-left: 2px solid rgba(72,97,228,.22); padding-left: 18px; }
  .intro-col h3 { font-size: 15.5px; font-weight: 700; color: #161A30; margin-bottom: 6px; }
  .intro-col p { font-size: 13.8px; color: var(--text-dim); line-height: 1.78; }
  @media (max-width: 760px) { .intro-cols { grid-template-columns: 1fr; gap: 18px; } }

  .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 20px; }
  .card {
    position: relative; border-radius: var(--radius); padding: 20px 20px;
    background: var(--card); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,.9);
    box-shadow: 0 1px 2px rgba(26,29,43,.04), 0 10px 30px -18px rgba(38,48,110,.24);
    transition: border-color .25s, transform .25s, box-shadow .25s; overflow: hidden;
  }
  .card::before {
    content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
    background: radial-gradient(520px 180px at var(--mx,50%) 0%, rgba(72,97,228,.08), transparent 62%);
    opacity: 0; transition: opacity .3s;
  }
  .card:hover { border-color: rgba(72,97,228,.24); transform: translateY(-3px); box-shadow: 0 18px 40px -22px rgba(38,48,110,.4); }
  .card:hover::before { opacity: 1; }
  .card h3 { font-size: 15.5px; font-weight: 700; margin-bottom: 7px; letter-spacing: -.2px; color: #161A30; }
  .card p { font-size: 13.6px; color: var(--text-dim); line-height: 1.76; }
  @media (max-width: 860px) { .grid-3 { grid-template-columns: 1fr; } }

  .reason-list { margin-top: 18px; }
  .reason-item {
    display: grid; grid-template-columns: 1fr 260px; gap: 26px; align-items: start;
    padding: 16px 0; border-bottom: 1px solid var(--line);
  }
  .reason-item:first-child { border-top: 1px solid var(--line); }
  .reason-item h3 { font-size: 15.5px; font-weight: 700; margin-bottom: 5px; color: #161A30; letter-spacing: -.1px; }
  .reason-item p { font-size: 13.6px; color: var(--text-dim); max-width: 560px; }
  .reason-note { font-size: 12.5px; color: var(--text-dim); line-height: 1.65; padding-left: 14px; border-left: 1px solid var(--line); }
  @media (max-width: 760px) {
    .reason-item { grid-template-columns: 1fr; gap: 8px; }
    .reason-note { padding-left: 0; border-left: 0; }
  }

  .scenario-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 20px; }
  .scenario {
    border-radius: 14px; padding: 17px 16px; min-height: 118px;
    background: rgba(255,255,255,.55); border: 1px solid rgba(255,255,255,.9);
    box-shadow: 0 1px 2px rgba(26,29,43,.03), 0 10px 26px -20px rgba(38,48,110,.22);
    transition: border-color .25s, background .25s, transform .2s;
  }
  .scenario:hover { border-color: rgba(138,69,235,.28); background: rgba(255,255,255,.85); transform: translateY(-2px); }
  .scenario h3 { font-size: 14px; font-weight: 700; margin-bottom: 5px; color: #161A30; }
  .scenario p { font-size: 12.5px; color: var(--text-dim); line-height: 1.66; }

  .case-strip { margin-top: 12px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .case-mini { border-radius: 12px; padding: 13px 16px; border: 1px solid rgba(255,255,255,.9); background: rgba(255,255,255,.5); font-size: 12.5px; color: var(--text-dim); line-height: 1.68; box-shadow: 0 8px 22px -18px rgba(38,48,110,.24); }
  .case-mini b { color: #161A30; font-weight: 650; }
  @media (max-width: 900px) {
    .scenario-grid { grid-template-columns: repeat(2, 1fr); }
    .case-strip { grid-template-columns: 1fr; }
  }
  @media (max-width: 520px) { .scenario-grid { grid-template-columns: 1fr; } }

  .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 20px; position: relative; }
  .steps::before { content: ""; position: absolute; top: 17px; left: 8%; right: 8%; height: 1px; background: linear-gradient(90deg, transparent, rgba(72,97,228,.35), rgba(138,69,235,.35), transparent); }
  .step { position: relative; padding-right: 18px; }
  .step-dot {
    width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; margin-bottom: 12px;
    font-family: ui-monospace, monospace; font-size: 12.5px; font-weight: 700; color: #fff; position: relative; z-index: 1;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    box-shadow: 0 0 0 5px #F7F8FC, 0 8px 20px rgba(72,97,228,.22);
  }
  .step h3 { font-size: 14.5px; font-weight: 700; margin-bottom: 4px; color: #161A30; }
  .step p { font-size: 12.9px; color: var(--text-dim); line-height: 1.68; }
  @media (max-width: 820px) {
    .steps { grid-template-columns: 1fr 1fr; gap: 20px 0; }
    .steps::before { display: none; }
  }
  @media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }

  .faq-list { margin-top: 16px; max-width: 820px; }
  details { border-bottom: 1px solid var(--line); padding: 12px 0; }
  details summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; font-size: 14.5px; font-weight: 700; color: #161A30; letter-spacing: -.1px; }
  details summary::-webkit-details-marker { display: none; }
  details summary::after { content: "+"; font-family: ui-monospace, monospace; font-weight: 400; font-size: 19px; color: var(--primary); line-height: 1; flex-shrink: 0; transition: transform .25s; }
  details[open] summary::after { transform: rotate(45deg); }
  details .answer { margin-top: 8px; font-size: 13.6px; color: var(--text-dim); max-width: 720px; line-height: 1.78; }

  .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 20px; }
  .news-card { border-radius: 14px; padding: 17px 18px; border: 1px solid rgba(255,255,255,.9); background: rgba(255,255,255,.55); box-shadow: 0 1px 2px rgba(26,29,43,.03), 0 10px 26px -20px rgba(38,48,110,.22); transition: border-color .25s, transform .2s, background .2s; }
  .news-card:hover { border-color: rgba(72,97,228,.26); transform: translateY(-2px); background: rgba(255,255,255,.82); }
  .news-date { font-family: ui-monospace, monospace; font-size: 11px; color: var(--primary); letter-spacing: .4px; margin-bottom: 6px; font-weight: 600; }
  .news-card h3 { font-size: 14px; font-weight: 700; margin-bottom: 5px; line-height: 1.48; color: #161A30; }
  .news-card p { font-size: 12.6px; color: var(--text-dim); line-height: 1.68; }
  @media (max-width: 820px) { .news-grid { grid-template-columns: 1fr; } }

  .cta-section { padding: 20px 0 25px; }
  .cta-box { position: relative; border-radius: 22px; padding: 32px 36px; text-align: center; overflow: hidden; border: 1px solid rgba(255,255,255,.95); background: radial-gradient(ellipse 70% 90% at 18% 0%, rgba(72,97,228,.13), transparent 62%), radial-gradient(ellipse 60% 80% at 92% 100%, rgba(138,69,235,.12), transparent 62%), radial-gradient(ellipse 50% 60% at 70% 20%, rgba(232,120,190,.06), transparent 60%), linear-gradient(170deg, rgba(255,255,255,.92), rgba(255,255,255,.66)); box-shadow: 0 24px 60px -34px rgba(38,48,110,.4); }
  .cta-box h2 { font-size: clamp(20px, 2.6vw, 26px); letter-spacing: -.6px; font-weight: 800; margin-bottom: 8px; color: #12152A; }
  .cta-box p { color: var(--text-mid); font-size: 14px; max-width: 500px; margin: 0 auto 18px; }

  footer { border-top: 1px solid var(--line); padding: 18px 0; font-size: 12.5px; color: var(--text-dim); background: rgba(255,255,255,.4); }
  .footer-inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
  .footer-links { display: flex; gap: 20px; }
  .footer-links a:hover { color: var(--primary); }

  @media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    html { scroll-behavior: auto; }
  }