:root {
  color-scheme: light;
  --bg: #fbf7ef;
  --surface: #ffffff;
  --ink: #24211d;
  --muted: #756f67;
  --line: #e9dfd1;
  --accent: #f58a1f;
  --accent-dark: #b95000;
  --blue: #2463d7;
  --shadow: 0 18px 45px rgba(67, 48, 20, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

body {
  margin: 0;
  line-height: 1.65;
}

a {
  color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
}

.nav {
  width: min(1040px, calc(100% - 32px));
  min-height: 70px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  font-size: 19px;
  text-decoration: none;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  box-shadow: 0 6px 18px rgba(67, 48, 20, 0.14);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--accent-dark);
}

main {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 42px 0 68px;
}

.hero {
  position: relative;
  padding: 54px 0 34px;
  border-bottom: 1px solid var(--line);
}

.hero-icon {
  width: 92px;
  height: 92px;
  margin-bottom: 22px;
  border-radius: 20px;
  box-shadow: 0 16px 32px rgba(67, 48, 20, 0.14);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.18;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(36px, 7vw, 68px);
}

h2 {
  margin: 42px 0 12px;
  font-size: 28px;
}

h3 {
  margin: 28px 0 8px;
  font-size: 20px;
}

p {
  max-width: 820px;
  margin: 0 0 14px;
}

.lead {
  max-width: 760px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 18px;
}

.quick-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.link-card {
  min-height: 150px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  text-decoration: none;
}

.link-card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 19px;
}

.link-card span {
  color: var(--muted);
  font-size: 15px;
}

.content {
  max-width: 880px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.meta {
  color: var(--muted);
  font-size: 15px;
}

.section {
  padding-top: 8px;
}

ul {
  margin: 8px 0 18px 22px;
  padding: 0;
}

li {
  margin: 6px 0;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0 6px;
}

.panel {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf9;
}

.panel h3 {
  margin-top: 0;
}

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 760;
  text-decoration: none;
}

.button.secondary {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fffdf9;
}

.footer-inner {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0;
  color: var(--muted);
  font-size: 14px;
}

.zh {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 14px 0;
  }

  .quick-links,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .content {
    padding: 24px 18px;
  }

  main {
    padding-top: 26px;
  }

  .hero {
    padding-top: 34px;
  }
}