:root {
  --bg: #f5f1e8;
  --panel: #fffdf8;
  --ink: #172126;
  --muted: #65707a;
  --line: rgba(23, 33, 38, 0.12);
  --brand: #b35c2e;
  --brand-dark: #8a431f;
  --shadow: 0 20px 50px rgba(27, 34, 38, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(179, 92, 46, 0.12), transparent 28%),
    linear-gradient(180deg, #f7f4ed 0%, #f2eee5 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(247, 244, 237, 0.88);
  border-bottom: 1px solid rgba(23, 33, 38, 0.06);
}

.topbar-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.topbar-inner {
  min-height: 74px;
}

.brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  color: var(--muted);
}

.hero,
.section {
  padding: 88px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 36px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand);
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.08;
  max-width: 720px;
}

.hero-copy {
  margin-top: 22px;
  max-width: 660px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 138px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
}

.button.ghost {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.68);
}

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

.metric-card,
.info-card,
.advantage-card,
.contact-box {
  border: 1px solid rgba(23, 33, 38, 0.08);
  border-radius: 24px;
  background: rgba(255, 253, 248, 0.9);
  box-shadow: var(--shadow);
}

.metric-card {
  padding: 24px;
}

.metric-card span {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--muted);
}

.metric-card strong {
  font-size: 24px;
  line-height: 1.4;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.section-heading h2 {
  font-size: clamp(28px, 3vw, 38px);
}

.card-grid,
.advantage-grid {
  display: grid;
  gap: 18px;
}

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

.advantage-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-card,
.advantage-card {
  padding: 28px;
}

.info-card h3,
.advantage-card h3,
.timeline-item h3 {
  margin-bottom: 12px;
  font-size: 20px;
}

.info-card p,
.advantage-card p,
.timeline-item p,
.contact-panel p,
.contact-box p {
  line-height: 1.9;
  color: var(--muted);
}

.section-alt {
  background: rgba(255, 255, 255, 0.42);
  border-top: 1px solid rgba(23, 33, 38, 0.05);
  border-bottom: 1px solid rgba(23, 33, 38, 0.05);
}

.timeline {
  display: grid;
  gap: 20px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 22px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(23, 33, 38, 0.08);
}

.timeline-item:last-child {
  border-bottom: 0;
}

.step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: rgba(179, 92, 46, 0.12);
  color: var(--brand-dark);
  font-size: 18px;
  font-weight: 700;
}

.section-contact {
  padding-bottom: 110px;
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 24px;
  align-items: stretch;
}

.contact-box {
  padding: 28px;
}

.contact-box p + p {
  margin-top: 12px;
}

.footer {
  border-top: 1px solid rgba(23, 33, 38, 0.08);
  background: rgba(255, 255, 255, 0.62);
}

.footer-inner {
  min-height: 72px;
  font-size: 14px;
  color: var(--muted);
}

@media (max-width: 900px) {
  .topbar-inner,
  .footer-inner,
  .hero-grid,
  .contact-panel,
  .card-grid,
  .advantage-grid {
    grid-template-columns: 1fr;
  }

  .topbar-inner,
  .footer-inner {
    display: grid;
    justify-content: initial;
  }

  .nav {
    flex-wrap: wrap;
    gap: 14px 18px;
  }

  .hero,
  .section {
    padding: 68px 0;
  }

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

  .hero-actions {
    flex-wrap: wrap;
  }
}