:root {
  --bg: #f5f7fb;
  --surface: rgba(255, 255, 255, 0.9);
  --text: #10203a;
  --muted: #56708f;
  --line: rgba(16, 32, 58, 0.12);
  --brand: #0c4da2;
  --brand-strong: #083978;
  --brand-soft: #dfefff;
  --teal: #0bb0be;
  --shadow: 0 24px 80px rgba(11, 36, 76, 0.14);
  --radius-xl: 32px;
  --radius-lg: 22px;
  --container: min(1180px, calc(100vw - 32px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { overflow-x: hidden; }
body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(12, 77, 162, 0.16), transparent 36%),
    radial-gradient(circle at top right, rgba(11, 176, 190, 0.14), transparent 28%),
    linear-gradient(180deg, #eff5ff 0%, #f7f9fc 48%, #eef6ff 100%);
  color: var(--text);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-shell { width: var(--container); margin: 0 auto; padding-bottom: 48px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 20px;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
  box-shadow: 0 14px 50px rgba(17, 42, 82, 0.08);
}

.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(12, 77, 162, 0.94), rgba(11, 176, 190, 0.82));
  color: #fff;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.brand-copy { display: flex; flex-direction: column; gap: 2px; }
.brand-copy strong, .site-nav a, .button, .lang-button, .card-label, .contact-email, .contact-label {
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
}
.brand-copy small { color: var(--muted); }

.site-nav { display: flex; align-items: center; gap: 22px; }
.site-nav a { color: var(--muted); font-size: 0.95rem; transition: color 0.2s ease; }
.site-nav a:hover { color: var(--brand); }
.header-actions { display: flex; align-items: center; gap: 12px; }

.lang-toggle {
  display: inline-flex;
  padding: 4px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
}
.lang-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.lang-button.is-active { background: var(--brand); color: #fff; }

.menu-button {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--text);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-strong));
  color: #fff;
  box-shadow: 0 14px 40px rgba(12, 77, 162, 0.24);
}
.button-secondary, .button-ghost {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
  color: var(--text);
}
.desktop-only { display: inline-flex; }

main section { margin-top: 28px; scroll-margin-top: 110px; }
.hero, .why, .services, .markets, .support, .network, .faq, .contact {
  padding: 34px;
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  margin-top: 24px;
  background: linear-gradient(120deg, rgba(255,255,255,0.98) 0%, rgba(242,248,255,0.97) 52%, rgba(220,242,255,0.92) 100%);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: auto -120px -110px auto;
  width: 420px;
  height: 420px;
  border-radius: 44px;
  transform: rotate(18deg);
  background: linear-gradient(135deg, rgba(12,77,162,0.15), rgba(11,176,190,0.12));
}
.hero::after {
  content: "";
  position: absolute;
  inset: 18px auto auto 48%;
  width: 180px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand), transparent);
}
.hero-copy, .hero-panel { position: relative; z-index: 1; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  color: var(--brand);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 32px; height: 2px; background: var(--brand); }
.hero h1, .section-heading h2, .snapshot-copy h3 {
  margin: 0;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  line-height: 1.08;
  letter-spacing: -0.03em;
  text-wrap: balance;
}
.hero h1 {
  max-width: 8.6em;
  font-size: clamp(2.6rem, 3.8vw, 4rem);
}
.section-heading h2 {
  max-width: 10.8em;
  font-size: clamp(1.9rem, 2.6vw, 2.7rem);
}
html[lang="zh-CN"] .hero h1 {
  max-width: 7.2em;
  font-size: clamp(2.5rem, 3.7vw, 3.9rem);
}
html[lang="zh-CN"] .section-heading h2 {
  max-width: 8.4em;
  font-size: clamp(1.8rem, 2.45vw, 2.55rem);
}
html[lang="en"] .hero h1 {
  max-width: 10.8em;
  font-size: clamp(2.35rem, 3.3vw, 3.55rem);
}
html[lang="en"] .section-heading h2 {
  max-width: 13.4em;
  font-size: clamp(1.72rem, 2.2vw, 2.32rem);
}
.hero-text, .hero-mini-copy, .contact-note, .snapshot-copy p, .site-footer p, .support-copy p, .faq-answer, .service-card p, .market-card p, .feature-card p {
  color: var(--muted);
  line-height: 1.78;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero-notes { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.hero-note, .tag {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(12, 77, 162, 0.08);
  color: var(--brand-strong);
  font-size: 0.92rem;
}
.hero-panel { display: grid; gap: 16px; }
.hero-card, .feature-card, .service-card, .market-card, .contact-card, .contact-form, .support-note {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(12, 77, 162, 0.08);
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 16px 48px rgba(13, 43, 82, 0.08);
}
.hero-card { padding: 20px; }
.hero-card-primary {
  background: linear-gradient(150deg, rgba(12, 77, 162, 0.92), rgba(8, 57, 120, 0.96));
  color: #fff;
}
.hero-card-primary .card-label, .hero-card-primary .hero-stat small, .hero-card-primary .hero-stat span { color: rgba(255,255,255,0.82); }
.card-label { margin: 0 0 14px; font-weight: 700; letter-spacing: 0.04em; }
.hero-stats { display: grid; gap: 14px; }
.hero-stat {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.hero-stat:last-child { padding-bottom: 0; border-bottom: 0; }
.hero-stat strong { font-size: 1.4rem; }
.hero-stat small { display: block; margin-top: 4px; }
.market-pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.market-pill {
  padding: 10px 12px;
  border-radius: 14px;
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
}
.section-heading { display: flex; flex-direction: column; gap: 12px; margin-bottom: 22px; }
.feature-grid, .service-grid, .market-grid { display: grid; gap: 18px; }
.feature-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.service-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.market-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-card, .service-card, .market-card { position: relative; padding: 22px; overflow: hidden; }
.feature-card::before, .service-card::before, .market-card::before {
  content: "";
  position: absolute;
  inset: auto -30px -40px auto;
  width: 120px;
  height: 120px;
  transform: rotate(24deg);
  background: linear-gradient(135deg, rgba(12,77,162,0.12), transparent 70%);
}
.feature-card h3, .service-card h3, .market-card h3, .faq-item h3 { margin: 0 0 10px; font-size: 1.18rem; }
.feature-card .icon {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(12,77,162,0.14), rgba(11,176,190,0.16));
  color: var(--brand);
  font-size: 1.1rem;
  font-weight: 700;
}
.service-tag {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--brand);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.bullet-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}
.bullet-list li {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 12px;
  align-items: start;
}
.bullet-list li::before {
  content: "";
  width: 12px;
  height: 12px;
  margin-top: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--teal));
}
.support-layout, .network-layout, .contact-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
}
.support-note, .contact-card, .contact-form { padding: 24px; }
.network-table-wrap {
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: #fff;
}
.network-table { width: 100%; min-width: 640px; border-collapse: collapse; }
.network-table th, .network-table td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.network-table th {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.92rem;
  color: var(--muted);
}
.network-table tr:last-child td { border-bottom: 0; }
.network-aside { display: grid; gap: 16px; }
.snapshot-image { border-radius: var(--radius-lg); box-shadow: 0 18px 54px rgba(15, 42, 84, 0.18); }
.snapshot-copy {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(12,77,162,0.08), rgba(11,176,190,0.08));
}
.snapshot-label {
  margin: 0 0 10px;
  color: var(--brand);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}
.faq-list { display: grid; gap: 14px; }
.faq-item {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: #fff;
}
.contact-layout { align-items: start; }
.contact-email { font-size: clamp(1.3rem, 2vw, 2rem); }
.contact-form { background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(241,248,255,0.92)); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-grid label { display: grid; gap: 8px; }
.form-grid .full { grid-column: 1 / -1; }
.form-grid span { font-family: "Space Grotesk", "Noto Sans SC", sans-serif; font-size: 0.95rem; }
.form-grid input, .form-grid textarea, .form-grid select {
  width: 100%;
  border: 1px solid rgba(12,77,162,0.16);
  border-radius: 14px;
  background: rgba(255,255,255,0.86);
  padding: 14px 16px;
  font: inherit;
  color: var(--text);
}
.form-grid input:focus, .form-grid textarea:focus, .form-grid select:focus {
  outline: 2px solid rgba(12,77,162,0.2);
  border-color: var(--brand);
}
.form-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.form-hint { margin: 14px 0 0; color: var(--muted); }
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 26px;
  padding: 22px 8px 8px;
  color: var(--muted);
}

@media (max-width: 1100px) {
  .hero, .support-layout, .network-layout, .contact-layout { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service-grid, .market-grid { grid-template-columns: 1fr; }
  .hero h1, .section-heading h2 { max-width: none; }
}

@media (max-width: 860px) {
  main section { margin-top: 20px; scroll-margin-top: 92px; }
  .site-shell { padding-bottom: 28px; }
  .site-header {
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 12px;
    padding: 12px 14px;
    border-radius: 20px;
  }
  .brand { gap: 10px; min-width: 0; }
  .brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    font-size: 1rem;
  }
  .brand-copy strong { font-size: 0.98rem; }
  .brand-copy small { font-size: 0.76rem; }
  .menu-button {
    display: inline-grid;
    place-items: center;
    margin-left: auto;
    width: 42px;
    height: 42px;
  }
  .desktop-only { display: none; }
  .site-nav {
    display: none;
    width: 100%;
    gap: 10px;
    flex-direction: column;
    align-items: stretch;
    margin-top: 2px;
    padding-top: 12px;
    border-top: 1px solid rgba(16, 32, 58, 0.08);
  }
  .site-nav a {
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(12, 77, 162, 0.06);
  }
  .site-nav.is-open { display: flex; }
  .header-actions {
    width: 100%;
    justify-content: flex-end;
  }
  .hero, .why, .services, .markets, .support, .network, .faq, .contact {
    padding: 22px;
    border-radius: 26px;
  }
  .hero {
    gap: 20px;
    margin-top: 18px;
  }
  .hero::before {
    width: 240px;
    height: 240px;
    inset: auto -70px -90px auto;
  }
  .hero::after {
    inset: 14px auto auto 24px;
    width: 120px;
    height: 6px;
  }
  .eyebrow {
    gap: 8px;
    margin-bottom: 12px;
    font-size: 0.82rem;
    letter-spacing: 0.04em;
  }
  .eyebrow::before { width: 24px; }
  .hero-text, .hero-mini-copy, .contact-note, .snapshot-copy p, .site-footer p, .support-copy p, .faq-answer, .service-card p, .market-card p, .feature-card p {
    font-size: 0.98rem;
    line-height: 1.72;
  }
  .hero-actions,
  .hero-notes,
  .form-actions {
    flex-direction: column;
  }
  .hero-actions .button,
  .form-actions .button,
  .hero-note {
    width: 100%;
  }
  .hero-note {
    justify-content: flex-start;
    min-height: 46px;
    padding: 12px 14px;
    border-radius: 16px;
  }
  .hero-card,
  .feature-card,
  .service-card,
  .market-card,
  .contact-card,
  .contact-form,
  .support-note,
  .faq-item,
  .snapshot-copy { padding: 20px; }
  .hero-stat {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .hero-stat span { font-size: 0.92rem; }
  .feature-grid, .form-grid { grid-template-columns: 1fr; }
  .feature-grid, .service-grid, .market-grid, .faq-list { gap: 14px; }
  .feature-card h3, .service-card h3, .market-card h3, .faq-item h3 { font-size: 1.08rem; }
  .bullet-list {
    gap: 10px;
    margin-top: 18px;
  }
  .network-table-wrap { margin-inline: -4px; }
  .network-table th, .network-table td { padding: 14px 14px; }
  .contact-email {
    font-size: clamp(1.18rem, 5vw, 1.6rem);
    overflow-wrap: anywhere;
  }
  .form-grid input, .form-grid textarea, .form-grid select { min-height: 50px; }
  .site-footer {
    flex-direction: column;
    gap: 10px;
    padding: 18px 4px 2px;
  }
  .site-footer a { overflow-wrap: anywhere; }
}

@media (max-width: 560px) {
  .site-shell { width: min(100vw - 16px, 100%); }
  .site-header {
    top: 8px;
    padding: 10px 12px;
  }
  .brand-copy strong { font-size: 0.92rem; }
  .brand-copy small { font-size: 0.72rem; }
  .hero, .why, .services, .markets, .support, .network, .faq, .contact {
    padding: 18px;
    border-radius: 22px;
  }
  .hero h1 { font-size: clamp(2rem, 9vw, 2.55rem); }
  .section-heading h2 { font-size: clamp(1.55rem, 7vw, 1.95rem); }
  html[lang="en"] .hero h1 { font-size: clamp(1.95rem, 8.2vw, 2.35rem); }
  html[lang="en"] .section-heading h2 { font-size: clamp(1.45rem, 6.2vw, 1.8rem); }
  .button { min-height: 48px; }
  .hero-note, .tag { font-size: 0.88rem; }
  .network-table { min-width: 580px; }
  .contact-email { font-size: 1.15rem; }
}