:root {
  color-scheme: light;
  --ink: #16202a;
  --muted: #607082;
  --line: #d8e1ea;
  --panel: #ffffff;
  --wash: #f3f7fb;
  --accent: #1976d2;
  --accent-strong: #0c4f9e;
  --green: #17845b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  background: #fff;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(216, 225, 234, 0.82);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 18px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  color: #fff;
  background: var(--accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}

.nav a:hover,
.site-footer a:hover {
  color: var(--accent);
}

.admin-link {
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(28px, 6vw, 76px);
  align-items: center;
  min-height: calc(100vh - 68px);
  padding: clamp(48px, 8vw, 96px) clamp(20px, 5vw, 72px);
  background:
    linear-gradient(135deg, rgba(25, 118, 210, 0.10), transparent 42%),
    linear-gradient(180deg, #fff 0%, var(--wash) 100%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.lead {
  max-width: 660px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 800;
}

.primary-action {
  color: #fff;
  background: var(--accent);
}

.primary-action:hover {
  background: var(--accent-strong);
}

.secondary-action {
  border: 1px solid var(--line);
  background: #fff;
}

.hero-panel {
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 24px 70px rgba(22, 32, 42, 0.12);
}

.panel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 66px;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--wash);
}

.panel-row span {
  color: var(--muted);
}

.panel-row strong {
  color: var(--accent-strong);
}

.section {
  padding: clamp(48px, 7vw, 86px) clamp(20px, 5vw, 72px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature-grid article {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.feature-grid p,
.workflow p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.workflow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  background: var(--wash);
}

.workflow div {
  max-width: 820px;
}

.workflow h2 {
  margin-bottom: 16px;
}

code {
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.compact {
  flex: 0 0 auto;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 22px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

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

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

@media (max-width: 640px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .nav {
    flex-wrap: wrap;
    gap: 12px;
  }

  .hero {
    padding-top: 42px;
  }

  h1 {
    font-size: 38px;
  }

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