:root {
  --bg: #f5efe2;
  --panel: rgba(255, 250, 240, 0.86);
  --ink: #15231a;
  --muted: #536357;
  --line: rgba(21, 35, 26, 0.12);
  --accent: #0f766e;
  --success: #19734d;
  --shadow: 0 20px 60px rgba(49, 39, 14, 0.12);
  --radius: 24px;
  --font-display: "Georgia", "Times New Roman", serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.18), transparent 30%),
    radial-gradient(circle at bottom right, rgba(224, 122, 31, 0.18), transparent 35%),
    var(--bg);
}
a { color: inherit; }
.shell { width: min(1120px, calc(100vw - 32px)); margin: 0 auto; }
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
}
.nav { display: flex; gap: 14px; flex-wrap: wrap; }
.nav a { text-decoration: none; color: var(--muted); }
.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: start;
  padding: 36px 0 24px;
}
.hero-card, .panel, .pricing-card, .doc-card, .dashboard-card {
  background: var(--panel);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-card, .hero-demo, .panel, .dashboard-card, .doc-card, .pricing-card { padding: 24px; }
.hero-card h1, .page-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  line-height: 0.98;
}
.hero-card p, .lede, .muted {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}
.cta-row, .button-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.button, button {
  appearance: none;
  border: 0;
  cursor: pointer;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 700;
  text-decoration: none;
}
.button-primary, button, .button.primary { background: var(--ink); color: white; }
.button-secondary, .button.secondary {
  background: white;
  color: var(--ink);
  border: 1px solid var(--line);
}
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 24px; }
.stat {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
}
.stat strong { display: block; font-size: 1.45rem; }
.tag {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
}
.section { padding: 24px 0; }
.grid-3, .grid-2, .pricing-grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.pricing-grid { grid-template-columns: repeat(3, 1fr); }
.panel h2, .doc-card h2, .dashboard-card h2 { margin-top: 0; font-size: 1.15rem; }
.pricing-card.featured { border-color: rgba(15, 118, 110, 0.4); }
.price { font-family: var(--font-display); font-size: 2rem; margin: 8px 0 4px; }
.feature-list { padding-left: 18px; color: var(--muted); }
.page-hero { padding: 24px 0 8px; }
.code-block, pre {
  overflow: auto;
  background: #142019;
  color: #ecf8ef;
  border-radius: 18px;
  padding: 18px;
  font-size: 0.92rem;
  line-height: 1.6;
}
form { display: grid; gap: 12px; }
label { display: grid; gap: 6px; font-weight: 600; }
input, textarea, select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(21, 35, 26, 0.18);
  background: rgba(255, 255, 255, 0.9);
  font: inherit;
}
textarea { min-height: 108px; resize: vertical; }
.status, .tiny { color: var(--muted); font-size: 0.92rem; }
.status.success { color: var(--success); }
.status.error { color: #a12626; }
.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}
.dashboard-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 18px;
  padding: 16px 0 32px;
}
.submissions { display: grid; gap: 12px; }
.submission-item {
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}
.submission-item pre { margin: 10px 0 0; }
.footer { padding: 28px 0 40px; color: var(--muted); }
@media (max-width: 900px) {
  .hero, .dashboard-layout, .grid-2, .grid-3, .pricing-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
}