:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-soft: #eef3f7;
  --text: #16202a;
  --muted: #5b6673;
  --line: #d7dde5;
  --accent: #1e7a6e;
  --accent-strong: #165e55;
  --accent-soft: #dff3ef;
  --shadow: 0 10px 28px rgba(20, 32, 44, 0.08);
}

* {
  box-sizing: border-box;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-shell {
  min-height: 100vh;
}

.site-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(244, 246, 248, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-topbar-inner,
.site-section-inner {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
}

.site-topbar-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-brand {
  display: grid;
  gap: 4px;
}

.site-brand-title {
  font-size: 22px;
  font-weight: 700;
}

.site-brand-subtitle {
  color: var(--muted);
  font-size: 13px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.site-select,
.site-input,
.site-textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 10px 12px;
  color: var(--text);
}

.site-textarea {
  min-height: 128px;
  resize: vertical;
}

.site-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: 160ms ease;
}

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

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

.site-button.secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--text);
}

.site-button.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

.site-hero {
  padding: 44px 0 28px;
}

.site-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
  gap: 24px;
  align-items: stretch;
}

.site-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.site-hero-copy {
  padding: 28px;
  display: grid;
  gap: 20px;
}

.site-kicker {
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
}

.site-title {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.08;
  margin: 0;
}

.site-summary {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.site-highlight-list {
  display: grid;
  gap: 10px;
}

.site-highlight {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}

.site-cta-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.site-form-wrap {
  padding: 24px;
  display: grid;
  gap: 16px;
}

.site-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.site-field {
  display: grid;
  gap: 6px;
}

.site-label {
  font-size: 13px;
  color: var(--muted);
}

.site-section {
  padding: 0 0 28px;
}

.site-section-title {
  margin: 0 0 14px;
  font-size: 20px;
}

.site-product-grid,
.site-event-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.site-product-card,
.site-card {
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.site-card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.site-muted {
  color: var(--muted);
}

.site-chip-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.site-chip {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 13px;
}

.site-footer {
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 13px;
}

.site-toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  max-width: 360px;
  padding: 12px 14px;
  border-radius: 8px;
  background: #19222c;
  color: #fff;
  box-shadow: var(--shadow);
}

.site-toast.error {
  background: #8a2430;
}

@media (max-width: 960px) {
  .site-hero-grid,
  .site-product-grid,
  .site-event-grid,
  .site-form-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-topbar-inner {
    min-height: auto;
    padding: 12px 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .site-hero {
    padding-top: 24px;
  }

  .site-hero-copy,
  .site-form-wrap {
    padding: 18px;
  }
}