* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --black: #000000;
  --light: #f5f5f7;
  --surface: rgba(255, 255, 255, 0.08);
  --text-light: #f5f5f7;
  --text-light-soft: rgba(255, 255, 255, 0.68);
  --text-dark: #1d1d1f;
  --text-dark-soft: rgba(29, 29, 31, 0.72);
  --line-dark: rgba(255, 255, 255, 0.12);
  --line-light: rgba(29, 29, 31, 0.12);
  --blue: #0071e3;
  --blue-hover: #005ec0;
  --gold: #c5961a;
  --gold-soft: rgba(197, 150, 26, 0.16);
  --max-width: 1200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'SF Pro Text', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  background: var(--light);
  overflow-x: hidden;
}

a { color: inherit; }

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.25s ease, border-color 0.25s ease, padding 0.25s ease;
}

.topbar.scrolled {
  padding: 12px 32px;
  background: rgba(0, 0, 0, 0.76);
  border-color: rgba(255, 255, 255, 0.12);
}

.logo {
  text-decoration: none;
  color: var(--gold);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-version {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(197, 150, 26, 0.28);
  background: rgba(197, 150, 26, 0.14);
  color: rgba(255, 255, 255, 0.82);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.top-link,
.admin-link {
  text-decoration: none;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.top-link {
  padding: 10px 0;
}

.top-link:hover {
  color: #ffffff;
}

.admin-link {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.admin-link:hover {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.08);
}

.hero {
  background:
    radial-gradient(circle at top right, rgba(197, 150, 26, 0.12), transparent 28%),
    linear-gradient(180deg, #060708 0%, var(--black) 55%, #0b0d10 100%);
  color: var(--text-light);
  padding: 132px 24px 80px;
}

.hero-shell,
.story-shell,
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
  gap: 40px;
  align-items: stretch;
}

.hero-copy {
  padding: 36px 0 20px;
}

.lat-label {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(197, 150, 26, 0.28);
  background: var(--gold-soft);
  color: rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  margin-bottom: 20px;
}

.hero-eyebrow,
.label,
.panel-label {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  font-weight: 600;
}

.hero-eyebrow {
  color: rgba(255, 255, 255, 0.58);
  margin-bottom: 18px;
}

.hero h1 {
  font-family: 'SF Pro Display', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

.hero-description {
  max-width: 640px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-light-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.primary-link,
.secondary-link {
  text-decoration: none;
  font-size: 16px;
  border-radius: 999px;
  padding: 12px 18px;
}

.primary-link {
  background: var(--blue);
  color: #ffffff;
}

.primary-link:hover {
  background: var(--blue-hover);
}

.secondary-link {
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

.secondary-link:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.28);
}

.hero-points {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-points li {
  padding: 10px 14px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.03);
}

.hero-panel {
  display: grid;
  gap: 16px;
}

.verify-card,
.signal-card {
  border-radius: 28px;
  border: 1px solid var(--line-dark);
  background: var(--surface);
  backdrop-filter: blur(18px);
}

.verify-card {
  padding: 28px;
  align-self: start;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.36);
}

.panel-label {
  color: rgba(255, 255, 255, 0.52);
  margin-bottom: 16px;
}

.verify-card h2 {
  font-size: 28px;
  line-height: 1.15;
  margin-bottom: 12px;
}

.verify-card p,
.search-note {
  color: var(--text-light-soft);
  line-height: 1.7;
  font-size: 14px;
}

.hero-search {
  display: flex;
  gap: 12px;
  margin: 24px 0 14px;
}

.hero-search input {
  flex: 1;
  min-width: 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  padding: 16px 18px;
  font-size: 15px;
  outline: none;
}

.hero-search input:focus {
  border-color: rgba(0, 113, 227, 0.85);
  background: rgba(255, 255, 255, 0.1);
}

.hero-search input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.hero-search button {
  border: none;
  border-radius: 18px;
  background: var(--blue);
  color: #ffffff;
  padding: 0 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

.hero-search button:hover {
  background: var(--blue-hover);
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.signal-card {
  padding: 18px 20px;
}

.signal-value {
  display: block;
  font-size: 28px;
  font-weight: 600;
  color: #ffffff;
}

.signal-label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
}

.coverage-section,
.process-section,
.story-section {
  padding: 88px 24px;
}

.coverage-section {
  background: var(--light);
}

.process-section {
  background: #ffffff;
}

.story-section {
  background: #0d1116;
  color: #ffffff;
}

.section-header {
  max-width: 960px;
  margin: 0 auto 40px;
  text-align: center;
}

.section-header.narrow {
  max-width: 820px;
}

.label {
  color: var(--blue);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.coverage-grid,
.process-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 20px;
}

.coverage-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.coverage-card {
  background: #ffffff;
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.06);
}

.coverage-card h3,
.process-step h3,
.story-copy h2 {
  font-size: 24px;
  line-height: 1.2;
  margin-bottom: 12px;
}

.coverage-card p,
.process-step p,
.story-copy p {
  color: var(--text-dark-soft);
  font-size: 15px;
  line-height: 1.8;
}

.process-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.process-step {
  padding: 24px 20px 0;
  border-top: 1px solid var(--line-light);
}

.step-index {
  display: block;
  margin-bottom: 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: rgba(29, 29, 31, 0.45);
}

.story-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 36px;
  align-items: center;
}

.story-copy .label {
  color: rgba(255, 255, 255, 0.54);
}

.story-copy h2 {
  margin-bottom: 18px;
}

.story-copy p {
  color: rgba(255, 255, 255, 0.68);
  margin-bottom: 16px;
}

.story-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.story-stats article {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.03);
}

.story-stats strong {
  display: block;
  font-size: 32px;
  line-height: 1.05;
  color: var(--gold);
}

.story-stats span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
}

.footer {
  background: #000000;
  color: rgba(255, 255, 255, 0.54);
  padding: 32px 24px 44px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
}

.f-brand {
  color: var(--gold);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}

.f-desc,
.f-right {
  font-size: 13px;
  line-height: 1.8;
}

.f-right {
  text-align: right;
}

@media (max-width: 1024px) {
  .hero-shell,
  .story-shell {
    grid-template-columns: 1fr;
  }

  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .topbar {
    padding: 12px 18px;
  }

  .topbar.scrolled {
    padding: 10px 18px;
  }

  .top-link {
    display: none;
  }

  .brand-group {
    gap: 8px;
  }

  .site-version {
    min-height: 22px;
    padding: 0 8px;
    font-size: 10px;
  }

  .hero {
    padding-top: 104px;
  }

  .hero-search {
    flex-direction: column;
  }

  .hero-search button {
    min-height: 52px;
  }

  .signal-grid,
  .coverage-grid,
  .story-stats {
    grid-template-columns: 1fr;
  }

  .process-grid {
    grid-template-columns: 1fr;
  }

  .coverage-card,
  .verify-card,
  .signal-card,
  .story-stats article {
    border-radius: 22px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .f-right {
    text-align: left;
  }
}