/* ══════════ 品牌站 / 文档 / 查单 ══════════ */

.site-body { background: var(--bg-canvas); }

/* 顶栏 */
.site-header {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  height: 62px; padding: 0 28px;
  background: color-mix(in srgb, var(--bg-canvas) 84%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border-inset);
}
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  padding: 7px 11px; border-radius: var(--radius-sm);
  font-size: 13px; color: var(--fg-secondary); font-weight: 500;
}
.site-nav a:hover { color: var(--fg-primary); background: var(--bg-hover); }
.site-actions { display: flex; align-items: center; gap: 8px; }

/* Hero */
.hero { max-width: 1120px; margin: 0 auto; padding: 72px 28px 40px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  height: 26px; padding: 0 11px; border-radius: var(--radius-full);
  background: var(--accent-soft); border: 1px solid var(--accent-border);
  color: var(--accent); font-size: 11.5px; font-weight: 650; letter-spacing: 0.02em;
}
.hero h1 {
  margin-top: 18px;
  font-size: 46px; line-height: 1.08; letter-spacing: -0.035em;
  font-weight: 660;
}
.hero h1 .grad {
  background: linear-gradient(96deg, #2563eb 8%, #7c3aed 52%, #0ea5e9 92%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lede {
  margin-top: 18px; font-size: 16px; line-height: 1.65; color: var(--fg-secondary); max-width: 520px;
}
.hero-cta { display: flex; gap: 10px; margin-top: 28px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 22px; margin-top: 30px; flex-wrap: wrap; }
.hero-meta div { display: flex; flex-direction: column; gap: 2px; }
.hero-meta strong { font-size: 17px; letter-spacing: -0.02em; }
.hero-meta span { font-size: 11.5px; color: var(--fg-tertiary); letter-spacing: 0.02em; }

/* 收银台预览 */
.preview {
  border-radius: 16px; border: 1px solid var(--border);
  background: var(--bg-surface); box-shadow: var(--shadow-pop);
  overflow: hidden; transform: perspective(1200px) rotateY(-4deg) rotateX(2deg);
  transition: transform 500ms var(--ease);
}
.preview:hover { transform: perspective(1200px) rotateY(0) rotateX(0); }
.preview-bar {
  display: flex; align-items: center; gap: 6px;
  height: 34px; padding: 0 12px; border-bottom: 1px solid var(--border-inset); background: var(--bg-subtle);
}
.preview-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border-strong); }
.preview-url {
  margin-left: 8px; font-size: 10.5px; color: var(--fg-tertiary);
  font-family: var(--font-mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.preview-body { padding: 18px; display: grid; grid-template-columns: 1fr 1.25fr; gap: 14px; }
.pv-summary { background: var(--bg-subtle); border-radius: 10px; padding: 14px; }
.pv-amount { font-size: 24px; font-weight: 660; letter-spacing: -0.03em; margin: 10px 0 4px; }
.pv-line { height: 7px; border-radius: 4px; background: var(--border); margin-top: 8px; }
.pv-pay { border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.pv-qr {
  width: 92px; height: 92px; margin: 4px auto 10px; border-radius: 8px;
  background:
    repeating-conic-gradient(var(--fg-primary) 0% 25%, transparent 0% 50%) 50% / 12px 12px;
  opacity: 0.88;
}
.pv-btn { height: 30px; border-radius: 7px; background: var(--accent); margin-top: 10px; }
.pv-net {
  height: 22px; border-radius: 6px; background: var(--warning-soft);
  border: 1px solid var(--warning-border); margin-bottom: 10px;
}

/* 章节 */
.section-wrap { max-width: 1120px; margin: 0 auto; padding: 56px 28px; }
.section-head-center { text-align: center; max-width: 640px; margin: 0 auto 36px; }
.section-head-center h2 { font-size: 30px; letter-spacing: -0.03em; }
.section-head-center p { margin-top: 12px; color: var(--fg-secondary); font-size: 14.5px; line-height: 1.6; }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.feature {
  padding: 20px; border-radius: var(--radius-card); border: 1px solid var(--border);
  background: var(--bg-surface); transition: all var(--dur) var(--ease);
}
.feature:hover { border-color: var(--border-strong); transform: translateY(-2px); box-shadow: var(--shadow-card); }
.feature-ico {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent-border);
  margin-bottom: 13px;
}
.feature h3 { font-size: 14.5px; }
.feature p { margin-top: 7px; font-size: 13px; color: var(--fg-secondary); line-height: 1.6; }
.feature code { font-size: 11.5px; }

/* 架构图 */
.arch {
  padding: 26px; border-radius: var(--radius-card); border: 1px solid var(--border);
  background: var(--bg-surface); overflow: auto;
}
.arch-row { display: flex; gap: 10px; align-items: stretch; margin-bottom: 10px; }
.arch-label {
  width: 96px; flex: none; font-size: 10.5px; font-weight: 650; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--fg-tertiary); display: flex; align-items: center;
}
.arch-boxes { display: flex; gap: 8px; flex: 1; flex-wrap: wrap; }
.arch-box {
  flex: 1; min-width: 118px; padding: 11px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg-subtle);
  font-size: 12px; font-weight: 550;
}
.arch-box small { display: block; margin-top: 3px; font-size: 10.5px; color: var(--fg-tertiary); font-weight: 400; }
.arch-box.accent { background: var(--accent-soft); border-color: var(--accent-border); color: var(--accent); }
.arch-box.accent small { color: var(--accent); opacity: 0.8; }

/* 表格 */
.spec-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.spec-table th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--fg-tertiary); padding: 10px 14px; border-bottom: 1px solid var(--border); font-weight: 650;
}
.spec-table td { padding: 12px 14px; border-bottom: 1px solid var(--border-inset); }
.spec-table tr:last-child td { border-bottom: none; }

/* 文档 */
.docs-layout { display: grid; grid-template-columns: 224px minmax(0, 1fr); gap: 40px; max-width: 1120px; margin: 0 auto; padding: 36px 28px 80px; }
.docs-nav { position: sticky; top: 82px; align-self: start; display: flex; flex-direction: column; gap: 2px; }
.docs-nav .grp { font-size: 10.5px; font-weight: 650; letter-spacing: 0.07em; text-transform: uppercase; color: var(--fg-tertiary); padding: 14px 10px 5px; }
.docs-nav a { padding: 6px 10px; border-radius: 6px; font-size: 12.5px; color: var(--fg-secondary); }
.docs-nav a:hover { background: var(--bg-hover); color: var(--fg-primary); }
.docs-body { min-width: 0; }
.docs-body h1 { font-size: 30px; letter-spacing: -0.03em; }
.docs-body h2 { font-size: 20px; margin-top: 42px; padding-top: 22px; border-top: 1px solid var(--border-inset); letter-spacing: -0.02em; }
.docs-body h3 { font-size: 15px; margin-top: 24px; }
.docs-body p { margin-top: 12px; font-size: 14px; line-height: 1.7; color: var(--fg-secondary); }
.docs-body ul, .docs-body ol { margin-top: 12px; padding-left: 20px; font-size: 14px; line-height: 1.75; color: var(--fg-secondary); }
.docs-body li { margin-top: 4px; }
.docs-body pre { margin-top: 14px; }
.docs-body .anchor { scroll-margin-top: 90px; }
.pill-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.note {
  margin-top: 16px; padding: 13px 15px; border-radius: var(--radius);
  border: 1px solid var(--accent-border); background: var(--accent-soft);
  font-size: 13px; color: var(--fg-primary); line-height: 1.6;
}
.note strong { color: var(--accent); }

/* 查单 */
.track-wrap { max-width: 620px; margin: 0 auto; padding: 56px 24px 80px; }
.track-search { display: flex; gap: 8px; margin-top: 18px; }
.track-search input {
  flex: 1; height: 44px; padding: 0 14px; border-radius: 10px;
  border: 1px solid var(--border-strong); background: var(--bg-surface);
  font-family: var(--font-mono); font-size: 14px; letter-spacing: 0.06em; text-transform: uppercase;
}
.track-search input:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }

/* 页脚 */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-surface); }
.footer-inner {
  max-width: 1120px; margin: 0 auto; padding: 34px 28px;
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.footer-col h4 { font-size: 11px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--fg-tertiary); margin-bottom: 10px; }
.footer-col a { display: block; font-size: 12.5px; color: var(--fg-secondary); padding: 3px 0; }
.footer-col a:hover { color: var(--fg-primary); }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: 34px; }
  .preview { transform: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-nav { position: static; flex-direction: row; flex-wrap: wrap; }
  .docs-nav .grp { display: none; }
  .site-nav { display: none; }
}