:root {
  --bg: #16223b;
  --panel: #1d2a47;
  --panel-2: #f3f6fb;
  --text: #101828;
  --text-light: #f8fafc;
  --muted: #667085;
  --brand: #4f46e5;
  --brand-2: #06b6d4;
  --brand-3: #8b5cf6;
  --border: #e7ebf3;
  --shadow: 0 16px 44px rgba(15, 23, 42, 0.10);
  --shadow-soft: 0 10px 24px rgba(16,24,40,.045);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, "Noto Sans SC", system-ui, sans-serif;
  color: var(--text);
  background: #f6f8fc;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(246,248,252,.68);
  border-bottom: 1px solid rgba(222,227,237,.72);
  box-shadow: 0 6px 18px rgba(15,23,42,.035);
}
.nav {
  min-height: 72px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}
.nav-top {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  min-width: 0;
}
.nav-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: max-content;
}
.lang-toggle-desktop {
  justify-self: end;
}
.lang-toggle-mobile {
  display: none !important;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; }
.brand-logo {
  min-height: 48px;
  gap: 12px;
  align-items: center;
}
.brand-icon-img {
  display: block;
  width: 48px;
  height: 48px;
  border-radius: 15px;
  flex: 0 0 auto;
}
.brand-wordmark {
  display: block;
  height: 36px;
  width: auto;
  transform: translateY(1px);
}
.brand-mark {
  width: 36px; height: 36px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: white;
  box-shadow: 0 10px 24px rgba(79,70,229,.28);
}
.nav-links { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.nav-links a { color: #52607a; font-weight: 500; padding: 8px 0; position: relative; }
.nav-links a.active { color: var(--brand); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}
.lang-toggle, .btn {
  border: none; border-radius: 999px; padding: 12px 18px; font-weight: 700; cursor: pointer;
}
.lang-toggle {
  background: rgba(255,255,255,.5);
  color: #667085;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(222,227,237,.7);
  box-shadow: none;
}
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(222,227,237,.9);
  background: rgba(255,255,255,.7);
  border-radius: 12px;
  padding: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}
.menu-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: #334155;
  display: block;
}
.hero {
  background:
    radial-gradient(circle at top right, rgba(34,211,238,.16), transparent 34%),
    radial-gradient(circle at top left, rgba(129,140,248,.16), transparent 38%),
    linear-gradient(180deg, #526684 0%, #607596 100%);
  color: var(--text-light);
  padding: 96px 0 80px;
}
.hero-subpage {
  padding: 72px 0 60px;
}
.subpage-shell {
  grid-template-columns: 1.05fr .8fr;
  align-items: start;
}
.hero-shell, .hero-grid, .two-col, .contact-box { display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: start; }
.hero-shell { align-items: start; }
.hero-copy { display: flex; flex-direction: column; justify-content: flex-start; }
.eyebrow, .section-label {
  text-transform: uppercase; letter-spacing: .12em; font-size: 12px; font-weight: 800; color: #b9d8ff;
}
.hero-kicker-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0 18px; }
.hero-kicker {
  display: inline-flex; align-items: center; padding: 8px 12px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.16); background: rgba(255,255,255,.10); color: rgba(255,255,255,.90); font-size: 13px; font-weight: 600;
}
.hero h1, h1, h2 { line-height: 1.06; margin: 0 0 16px; }
.hero h1 { font-size: clamp(38px, 5vw, 62px); max-width: 13ch; letter-spacing: -.025em; }
.hero-text { font-size: 18px; color: rgba(255,255,255,.92); max-width: 64ch; }
.hero-text-lg { font-size: 19px; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.btn.primary { background: white; color: #24324b; box-shadow: 0 14px 28px rgba(15,23,42,.10); }
.btn.secondary { background: rgba(255,255,255,.10); color: white; border: 1px solid rgba(255,255,255,.18); }
.hero-panel, .hero-card {
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 30px;
  padding: 24px;
  box-shadow: 0 12px 28px rgba(15,23,42,.08);
  align-self: start;
}
.premium-panel { position: relative; overflow: hidden; }
.premium-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,0));
  pointer-events: none;
}
.panel-badge {
  display: inline-flex; padding: 8px 12px; border-radius: 999px;
  background: rgba(255,255,255,.18); color: #ffffff; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
}
.panel-metric-row { display: grid; grid-template-columns: 1fr; gap: 14px; margin: 20px 0; }
.panel-metric {
  display: grid; grid-template-columns: 72px 1fr; align-items: center; gap: 12px; padding: 16px 18px; border-radius: 20px;
  background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.2);
}
.panel-metric-value { font-size: 24px; font-weight: 800; }
.signal-card {
  margin-top: 16px; padding: 20px; border-radius: 22px;
  background: linear-gradient(180deg, rgba(255,255,255,.18), rgba(255,255,255,.10));
  border: 1px solid rgba(255,255,255,.18);
}
.signal-card h3 { margin: 10px 0 8px; font-size: 22px; }
.hero-proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 22px; }
.proof-item {
  display: flex; flex-direction: column; gap: 8px; padding: 18px; border-radius: 22px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.18);
}
.proof-item strong { font-size: 15px; color: #ffffff; }
.proof-item span { color: rgba(255,255,255,.82); font-size: 14px; }
.section { padding: 92px 0; }
.section.muted { background: #f1f4f9; }
.section-head { margin-bottom: 26px; }
.split-head {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: end;
}
.section-intro { color: var(--muted); font-size: 17px; margin: 0; }
h2 { font-size: clamp(32px, 4vw, 52px); max-width: 16ch; }
.cards.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.card, .contact-card, .step, .note {
  background: rgba(255,255,255,.92); border: 1px solid var(--border); border-radius: 26px; padding: 24px; box-shadow: var(--shadow-soft);
}
.card h3, .step h3 { margin-top: 0; }
.premium-cards .card:hover, .mini-card:hover { transform: translateY(-3px); transition: .22s ease; }
.feature-card { position: relative; overflow: hidden; }
.feature-card::after {
  content: ""; position: absolute; top: 0; right: 0; width: 72px; height: 72px;
  background: radial-gradient(circle, rgba(79,70,229,.12), transparent 70%);
}
.feature-icon {
  width: 42px; height: 42px; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #eef2ff, #ecfeff); color: var(--brand); font-size: 13px; font-weight: 800; margin-bottom: 18px;
}
.brand-band {
  border-top: 1px solid rgba(225,230,239,.78);
  border-bottom: 1px solid rgba(225,230,239,.78);
  background: #f4f7fb;
}
.band-grid, .focus-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.band-points p, .focus-layout p { color: var(--muted); font-size: 17px; }
.focus-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.mini-card {
  display: flex; flex-direction: column; gap: 8px; padding: 20px; border-radius: 22px;
  background: rgba(255,255,255,.92); border: 1px solid var(--border); box-shadow: var(--shadow-soft);
}
.mini-card strong { font-size: 15px; }
.mini-card span { color: var(--muted); font-size: 14px; }
.mini-card.dark {
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.16);
  box-shadow: none;
  margin-top: 12px;
}
.mini-card.dark span { color: rgba(248,250,252,.78); }
.hero-subpage .mini-card.dark { padding: 16px 18px; }
.hero-subpage .mini-card.dark:first-of-type,
.premium-panel .mini-card.dark:first-of-type { margin-top: 14px; }
.pill-grid { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.pill-grid span {
  padding: 12px 16px; border-radius: 999px; background: #eef2ff; color: #312e81; font-weight: 700;
}
.premium-pills span {
  background: linear-gradient(180deg, #ffffff, #f8fbff);
  border: 1px solid #dbe7ff;
  box-shadow: 0 8px 20px rgba(79,70,229,.06);
}
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.step {
  background: linear-gradient(180deg, #ffffff, #fbfcff);
}
.step span {
  display: inline-flex; width: 44px; height: 44px; border-radius: 999px; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: white; font-weight: 800; margin-bottom: 18px;
}
.contact-box { align-items: stretch; }
.contact-box-premium > div:first-child { display: flex; flex-direction: column; justify-content: center; }
.contact-box-premium-light {
  grid-template-columns: .9fr 1.1fr;
  align-items: stretch;
}
.light-card {
  background: linear-gradient(180deg, #f8fbff, #eef4ff);
  color: var(--text);
  border: 1px solid #dbe7ff;
}
.contact-form-card {
  border-radius: 28px;
}
.faq-stack .legal-section h2 { font-size: 22px; }
.cta-points { display: grid; gap: 14px; margin-top: 24px; }
.final-cta {
  background: linear-gradient(180deg, #495f82 0%, #58709a 100%);
  color: white;
}
.final-cta .section-label { color: #e3efff; }
.final-cta .section-intro { color: rgba(255,255,255,.88); }
.contact-card { background: #415978; color: white; }
.contact-card-premium {
  background: linear-gradient(180deg, rgba(255,255,255,.14), rgba(255,255,255,.07));
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: 0 12px 28px rgba(20,28,46,.08);
}
.contact-btn { margin-top: 14px; display: inline-flex; justify-content: center; }
.site-footer { background: #41516d; color: white; padding: 28px 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.footer-inner p { color: rgba(248,250,252,.74); margin: 8px 0 0; max-width: 680px; line-height: 1.7; }
.footer-links { display:flex; flex-wrap:wrap; gap:14px; }
.legal-page { min-height: calc(100vh - 72px); }
.legal { max-width: 960px; }
.legal-hero {
  display: grid;
  grid-template-columns: 1.05fr .8fr;
  gap: 20px;
  align-items: start;
  margin-bottom: 28px;
}
.legal-intro, .legal-meta, .legal-section {
  background: rgba(255,255,255,.92);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow-soft);
}
.legal-intro p:last-child, .legal-meta p:last-child, .legal-section p:last-child { margin-bottom: 0; }
.legal-meta {
  background: linear-gradient(180deg, #546886, #63799a);
  color: white;
}
.legal-meta p { color: rgba(255,255,255,.82); margin: 0 0 12px; }
.legal-meta p + p {
  margin-top: 14px;
}
.legal-meta strong {
  color: #ffffff;
}
.legal-stack { display: grid; gap: 18px; }
.legal-section h2 { font-size: 24px; max-width: unset; margin-bottom: 12px; }
.legal-section {
  position: relative;
  overflow: hidden;
}
.legal-section::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 68px;
  height: 68px;
  background: radial-gradient(circle, rgba(79,70,229,.08), transparent 70%);
  pointer-events: none;
}
.note { background: #fff7ed; border-color: #fdba74; }
.contact-form { display:grid; gap:16px; }
.contact-form label { display:grid; gap:8px; font-weight:600; color:#344054; }
.contact-form input, .contact-form textarea {
  width:100%; padding:12px 14px; border-radius:14px; border:1px solid var(--border); font:inherit; background: white;
}
.contact-form textarea { resize:vertical; min-height: 160px; }
.form-status { margin:0; color:#475467; font-size:14px; }
.form-status.success { color:#067647; }
.form-status.error { color:#b42318; }
.hp-field { position:absolute !important; left:-9999px !important; opacity:0 !important; pointer-events:none !important; }
[data-lang='zh'] .section-label, [data-lang='zh'] .eyebrow { letter-spacing: .04em; }
@media (max-width: 920px) {
  .hero-shell, .hero-grid, .two-col, .contact-box, .cards.three, .steps, .legal-hero, .split-head, .band-grid, .focus-layout, .hero-proof-grid, .focus-grid { grid-template-columns: 1fr; }
  .panel-metric-row, .panel-metric { grid-template-columns: 1fr; }
  .nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 0;
    gap: 0;
    min-height: auto;
  }
  .nav-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex: none;
  }
  .nav-links {
    margin-left: 0;
    margin-right: 0;
  }
  .hero h1, h2 { max-width: unset; }
  .hero-panel, .hero-card, .legal-meta, .contact-card, .contact-form-card { margin-top: 6px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 640px) {
  .section, .hero { padding: 48px 0; }
  .container { width: min(100% - 20px, 1120px); }

  .site-header {
    backdrop-filter: blur(10px);
  }
  .nav {
    min-height: auto;
  }
  .nav-top {
    min-height: 64px;
    gap: 12px;
    align-items: center;
  }
  .nav-actions {
    gap: 8px;
    margin-left: auto;
    justify-content: flex-end;
  }
  .lang-toggle-desktop {
    display: none;
  }
  .lang-toggle-mobile {
    display: inline-flex !important;
  }
  .brand-logo {
    min-height: 34px;
    gap: 8px;
  }
  .brand-icon-img { width: 28px; height: 28px; }
  .brand-wordmark { height: 20px; transform: none; }

  .lang-toggle-desktop {
    order: 0;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .nav-actions .lang-toggle-desktop {
    display: inline-flex;
  }
  .nav-links {
    display: none;
    grid-template-columns: 1fr;
    gap: 8px;
    width: 100%;
    padding: 10px 0 2px;
  }
  .nav-links.open {
    display: grid;
  }
  .nav-links a {
    padding: 10px 12px;
    font-size: 14px;
    line-height: 1.2;
    border-radius: 12px;
    background: rgba(255,255,255,.72);
    border: 1px solid rgba(222,227,237,.88);
    text-align: left;
  }
  .nav-links a.active::after { display: none; }
  .nav-links a.active {
    background: #eef2ff;
    border-color: #cfd7ff;
  }

  .lang-toggle {
    width: auto;
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    border-radius: 10px;
    font-size: 11px;
    line-height: 1;
    opacity: .85;
  }
  .btn {
    width: 100%;
    justify-content: center;
    display: inline-flex;
  }

  .hero h1 {
    font-size: clamp(30px, 9vw, 38px);
    line-height: 1.08;
    margin-bottom: 12px;
  }
  .hero-text, .hero-text-lg, .section-intro, .band-points p, .focus-layout p {
    font-size: 15px;
    line-height: 1.65;
  }
  .hero-kicker-row {
    display: none;
  }
  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 18px;
  }
  .hero-proof-grid {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 16px;
  }
  .proof-item, .mini-card, .card, .step, .legal-section, .legal-intro, .legal-meta, .contact-card, .contact-form-card {
    padding: 18px;
    border-radius: 20px;
  }
  .panel-metric {
    padding: 14px 16px;
    gap: 8px;
  }
  .panel-metric-value { font-size: 22px; }
  .signal-card { padding: 18px; margin-top: 14px; }

  .cards.three, .steps, .focus-grid, .cta-points, .legal-stack, .faq-stack {
    gap: 14px;
  }
  .section-head { margin-bottom: 18px; }
  h2 { font-size: clamp(28px, 8vw, 36px); }

  .contact-box,
  .contact-box-premium,
  .contact-box-premium-light,
  .hero-shell,
  .subpage-shell,
  .band-grid,
  .focus-layout,
  .split-head,
  .legal-hero {
    gap: 18px;
  }

  .footer-inner {
    gap: 16px;
  }
  .footer-links {
    gap: 10px 14px;
  }
}