:root {
  color-scheme: light;
  --bg-base: #f7f5f0;
  --bg-primary: #ffffff;
  --bg-secondary: #faf9f7;
  --bg-elevated: #f5f3ee;
  --bg-sunken: #f9f7f4;
  --bg-hover: #e5e0da;
  --border-primary: #e5e0da;
  --border-secondary: #d1cdc6;
  --border-subtle: #ede9e3;
  --text-primary: #1a1816;
  --text-secondary: #44413d;
  --text-tertiary: #6b6862;
  --text-muted: #8a8680;
  --btn-primary-bg: #1a1816;
  --btn-primary-text: #ffffff;
  --btn-primary-hover: #2d2a26;
  --accent: #b5936b;
  --accent-bg: rgba(181, 147, 107, 0.12);
  --accent-border: rgba(181, 147, 107, 0.35);
  --accent-text: #8b6e4e;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-base);
  color: var(--text-secondary);
}

a {
  color: inherit;
}

::selection {
  background: rgba(26, 24, 22, 0.15);
}

.landing-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.topbar,
.hero,
.section,
.faq,
.cta {
  border: 1px solid var(--border-primary);
  background: var(--bg-primary);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
}

.topbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.topbar-brand img {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-primary);
}

.topbar-links,
.chips,
.cta-actions,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav-link,
.chip,
.pill-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--border-primary);
  background: var(--bg-primary);
  color: var(--text-tertiary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  transition: border-color 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.nav-link:hover,
.chip:hover,
.pill-link:hover {
  border-color: var(--border-secondary);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.nav-link.active,
.pill-link.primary {
  border-color: var(--btn-primary-bg);
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
}

.nav-link.active:hover,
.pill-link.primary:hover {
  border-color: var(--btn-primary-hover);
  background: var(--btn-primary-hover);
  color: var(--btn-primary-text);
}

.hero,
.section,
.faq,
.cta,
.footer {
  margin-top: 18px;
}

.hero {
  padding: 28px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--accent-border);
  background: var(--accent-bg);
  color: var(--accent-text);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 24px;
  align-items: start;
  margin-top: 20px;
}

.hero h1 {
  margin: 0;
  color: var(--text-primary);
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero p {
  margin: 16px 0 0;
  max-width: 820px;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
}

.chips {
  margin-top: 18px;
}

.chip {
  background: var(--bg-sunken);
}

.hero-side {
  display: grid;
  gap: 12px;
}

.metric-card,
.card,
.ordered-item,
.faq-item {
  border: 1px solid var(--border-primary);
  background: var(--bg-sunken);
}

.metric-card {
  padding: 18px;
}

.metric-card strong,
.ordered-item strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 0 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.metric-card strong {
  color: var(--text-muted);
  padding: 0;
  min-height: auto;
  letter-spacing: 0.18em;
}

.metric-card span {
  display: block;
  margin-top: 10px;
  color: var(--text-primary);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.2;
}

.metric-card p {
  margin: 8px 0 0;
  color: var(--text-tertiary);
  font-size: 14px;
  line-height: 1.75;
}

.section,
.faq,
.cta {
  padding: 24px;
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.section h2,
.faq h2,
.cta h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 28px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.section-intro,
.faq-intro,
.cta p {
  margin: 0;
  max-width: 780px;
  color: var(--text-tertiary);
  line-height: 1.75;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  padding: 18px;
}

.card h3,
.ordered-item h3,
.faq-item h3 {
  margin: 0;
  color: var(--text-primary);
  line-height: 1.35;
}

.card h3 {
  font-size: 19px;
}

.card p,
.ordered-item p,
.faq-item p {
  margin: 10px 0 0;
  color: var(--text-tertiary);
  line-height: 1.75;
  font-size: 15px;
}

.ordered {
  display: grid;
  gap: 12px;
}

.ordered-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
}

.ordered-item strong {
  width: 64px;
  min-height: 64px;
  padding: 0;
  border: 1px solid var(--accent-border);
  background: var(--accent-bg);
  color: var(--accent-text);
  font-size: 16px;
  letter-spacing: 0.1em;
}

.ordered-item h3 {
  font-size: 18px;
}

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.faq-item {
  padding: 18px;
}

.faq-item h3 {
  font-size: 17px;
}

.cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
}

.footer {
  padding: 18px 0 0;
  color: var(--text-tertiary);
  font-size: 14px;
  line-height: 1.75;
}

@media (max-width: 960px) {
  .hero-grid,
  .card-grid,
  .cta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .landing-shell {
    width: min(100% - 24px, 1180px);
    padding-top: 14px;
    padding-bottom: 40px;
  }

  .topbar,
  .hero,
  .section,
  .faq,
  .cta {
    padding: 20px;
  }

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

  .ordered-item {
    grid-template-columns: 1fr;
  }
}