/* 有道翻译 — 官方网站 */

:root {
  --primary: #3B67F5;
  --primary-dark: #2C4FD9;
  --primary-light: #EBF0FF;
  --gold-grad: linear-gradient(270deg, #FFD8B7 0%, #FFE2C1 100%);

  --text-primary: #14172B;
  --text-secondary: #5A5F73;
  --text-tertiary: #9298AC;

  --border: #E6E8F0;
  --bg: #FFFFFF;
  --bg-soft: #F5F6FA;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 60px;
  --shadow-sm: 0 1px 2px rgba(16,24,40,.06);

  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: var(--font); color: var(--text-primary); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; margin: 0; padding: 0; }
img, svg { display: block; }

.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: #fff; z-index: 30;
}
.brand { display: flex; align-items: center; gap: 9px; flex-shrink: 0; min-width: 125px; }
.brand-mark { width: 28px; height: 28px; }
.brand-word { font-size: 15px; font-weight: 700; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { font-size: 13.5px; color: var(--text-secondary); }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.btn-vip { background: var(--gold-grad); color: #7A4A12; font-size: 13px; font-weight: 700; padding: 8px 16px; border-radius: var(--radius-pill); border: none; }
.search-box {
  display: flex; align-items: center; gap: 8px; background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 7px 12px; font-size: 13px; color: var(--text-tertiary); width: 220px;
}
.search-box svg { width: 15px; height: 15px; flex-shrink: 0; }

.layout { display: flex; max-width: 1200px; margin: 0 auto; }

/* ---------- Sidebar ---------- */
.docs-sidebar {
  width: 240px; flex-shrink: 0; padding: 28px 18px; border-right: 1px solid var(--border);
  position: sticky; top: 57px; align-self: flex-start; height: calc(100vh - 57px); overflow-y: auto;
}
.docs-group { margin-bottom: 24px; }
.docs-group-title { font-size: 11px; font-weight: 700; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 8px; padding: 0 10px; }
.docs-link { display: block; font-size: 13.5px; color: var(--text-secondary); padding: 7px 10px; border-radius: var(--radius-sm); margin-bottom: 2px; }
.docs-link:hover { background: var(--bg-soft); }
.docs-link.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }

/* ---------- Article ---------- */
.docs-main { flex: 1; min-width: 0; padding: 32px 40px 80px; }
.docs-breadcrumb { font-size: 12px; color: var(--text-tertiary); margin-bottom: 14px; }
.docs-breadcrumb a { color: var(--text-secondary); }
.docs-title { font-size: 26px; font-weight: 800; margin: 0 0 8px; }
.docs-meta { font-size: 12px; color: var(--text-tertiary); margin-bottom: 28px; }
.docs-article { max-width: 760px; }
.docs-article h2 { font-size: 18px; font-weight: 700; margin: 32px 0 12px; }
.docs-article h3 { font-size: 15px; font-weight: 700; margin: 22px 0 8px; }
.docs-article p { font-size: 14px; color: var(--text-secondary); line-height: 1.85; margin: 0 0 14px; }
.docs-article ul, .docs-article ol { margin: 0 0 16px; padding-left: 22px; }
.docs-article li { font-size: 14px; color: var(--text-secondary); line-height: 1.85; margin-bottom: 6px; }
.docs-article a { color: var(--primary); font-weight: 600; }
.docs-callout {
  border: 1px solid var(--primary-light); background: var(--primary-light); border-radius: var(--radius-md);
  padding: 16px 18px; font-size: 13px; color: var(--text-primary); margin: 20px 0; display: flex; gap: 10px;
}
.docs-callout svg { width: 18px; height: 18px; color: var(--primary); flex-shrink: 0; margin-top: 1px; }

.docs-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 20px 0; }
.docs-card { border: 1px solid var(--border); border-radius: var(--radius-md); padding: 18px; }
.docs-card h4 { font-size: 14px; font-weight: 700; margin: 0 0 6px; }
.docs-card p { font-size: 12.5px; color: var(--text-secondary); line-height: 1.7; margin: 0; }

.docs-table-wrap { overflow-x: auto; margin: 20px 0; }
.docs-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 520px; }
.docs-table th, .docs-table td { padding: 10px 14px; border: 1px solid var(--border); text-align: left; }
.docs-table th { background: var(--bg-soft); font-weight: 700; }
.docs-table td { color: var(--text-secondary); }

/* ---------- toc ---------- */
.docs-toc { width: 200px; flex-shrink: 0; padding: 32px 20px; display: none; }
.docs-toc-title { font-size: 11px; font-weight: 700; color: var(--text-tertiary); text-transform: uppercase; margin-bottom: 10px; }
.docs-toc a { display: block; font-size: 12.5px; color: var(--text-secondary); padding: 5px 0; }
.docs-toc a:hover { color: var(--primary); }

/* ---------- Download banner ---------- */
.docs-download-banner {
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  background: linear-gradient(135deg, var(--primary-light) 0%, #fff 75%);
  border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px 24px; margin: 20px 0 28px;
}
.docs-download-banner h3 { font-size: 16px; font-weight: 800; margin: 0 0 4px; }
.docs-download-banner p { font-size: 12.5px; color: var(--text-secondary); margin: 0; }
.docs-download-banner .app-badge-row { display: flex; gap: 8px; flex-shrink: 0; }
.btn-app { display: inline-flex; align-items: center; gap: 6px; background: var(--text-primary); color: #fff; padding: 9px 16px; border-radius: var(--radius-pill); font-size: 12.5px; font-weight: 700; }
.btn-app.secondary { background: #fff; color: var(--text-primary); border: 1px solid var(--border); }

/* ---------- Right column (translate widget for home article) ---------- */
.mini-translate { border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; margin: 20px 0 28px; }
.mini-translate-grid { display: grid; grid-template-columns: 1fr 1fr; }
.mini-pane { padding: 16px 18px; min-height: 140px; }
.mini-pane:first-child { border-right: 1px solid var(--border); }
.mini-pane textarea { width: 100%; height: 90px; border: none; outline: none; resize: none; font-size: 14px; font-family: inherit; }
.mini-pane .mini-result { font-size: 14px; color: var(--text-secondary); min-height: 90px; }
.mini-label { font-size: 12px; color: var(--text-tertiary); margin-bottom: 8px; }

.btn-primary { background: var(--primary); color: #fff; border: none; border-radius: var(--radius-pill); padding: 10px 20px; font-size: 13.5px; font-weight: 700; }

.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 20px 0; }
.plan-card { border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px 16px; text-align: center; position: relative; }
.plan-card.featured { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-light); }
.plan-badge { position: absolute; top: -10px; left: 50%; transform: translateX(-50%); background: var(--gold-grad); color: #7A4A12; font-size: 10px; font-weight: 700; padding: 3px 10px; border-radius: var(--radius-pill); }
.plan-name { font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.plan-price { font-size: 24px; font-weight: 800; margin-bottom: 2px; }
.plan-price span { font-size: 12px; font-weight: 400; color: var(--text-tertiary); }
.plan-desc { font-size: 11px; color: var(--text-tertiary); margin-bottom: 14px; }

.footer { border-top: 1px solid var(--border); padding: 26px 28px; text-align: center; font-size: 12px; color: var(--text-tertiary); }
.footer-links { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.footer-links a { color: var(--text-secondary); }

@media (min-width: 1100px) { .docs-toc { display: block; } }
@media (max-width: 900px) {
  .navbar { padding: 12px 16px; }
  .brand { flex-shrink: 0; min-width: 110px; }
  .nav-links { display: none; }
  .docs-sidebar { display: none; }
  .search-box { display: none; }
  .docs-cards { grid-template-columns: 1fr; }
  .mini-translate-grid { grid-template-columns: 1fr; }
  .mini-pane:first-child { border-right: none; border-bottom: 1px solid var(--border); }
  .plan-grid { grid-template-columns: 1fr; }
}

.brand-logo {
  height: 28px;
  width: auto;
  aspect-ratio: 1280 / 285;
  display: block;
  max-width: none;
  object-fit: contain;
}