/* 锐视AI · 使用文档 — 企业级视觉 */
:root {
  --doc-bg: #f6f7f9;
  --doc-surface: #ffffff;
  --doc-border: rgba(15, 23, 42, 0.08);
  --doc-text: #0f172a;
  --doc-muted: #64748b;
  --doc-accent: #2563eb;
  --doc-accent-soft: rgba(37, 99, 235, 0.1);
  --doc-accent-hover: #1d4ed8;
  --doc-sidebar: #fafbfc;
  --doc-code-bg: #f1f5f9;
  --doc-radius: 12px;
  --doc-radius-sm: 8px;
  --doc-shadow: 0 4px 24px rgba(15, 23, 42, 0.06), 0 0 0 1px var(--doc-border);
  /* 离线友好：不依赖外联字体；如需 DM Sans / Noto 可自行托管 woff2 并 @font-face */
  --doc-font: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --doc-serif: "Songti SC", "SimSun", "STSong", "Source Han Serif SC", serif;
  --doc-mono: ui-monospace, "Cascadia Mono", "Cascadia Code", "Consolas", monospace;
  --header-h: 64px;
}

[data-theme="dark"] {
  --doc-bg: #0c0f14;
  --doc-surface: #141922;
  --doc-border: rgba(148, 163, 184, 0.12);
  --doc-text: #e2e8f0;
  --doc-muted: #94a3b8;
  --doc-accent: #3b82f6;
  --doc-accent-soft: rgba(59, 130, 246, 0.15);
  --doc-accent-hover: #60a5fa;
  --doc-sidebar: #0f1218;
  --doc-code-bg: #1e293b;
  --doc-shadow: 0 4px 32px rgba(0, 0, 0, 0.35), 0 0 0 1px var(--doc-border);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .doc-sidebar-chevron {
    transition: none;
  }
}

body {
  margin: 0;
  font-family: var(--doc-font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--doc-text);
  background: var(--doc-bg);
  -webkit-font-smoothing: antialiased;
}

.doc-skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--doc-accent);
  color: #fff;
  font-weight: 600;
  border-radius: var(--doc-radius-sm);
  text-decoration: none;
}
.doc-skip-link:focus {
  left: 12px;
  outline: 2px solid var(--doc-text);
  outline-offset: 2px;
}

a {
  color: var(--doc-accent);
  text-decoration: none;
}
a:hover {
  color: var(--doc-accent-hover);
  text-decoration: underline;
}

.doc-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 40px);
  background: color-mix(in srgb, var(--doc-surface) 92%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--doc-border);
}

.doc-brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.doc-brand-title {
  font-family: var(--doc-serif);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  color: var(--doc-text);
}

.doc-brand-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--doc-accent);
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--doc-accent-soft);
  border: 1px solid color-mix(in srgb, var(--doc-accent) 35%, transparent);
}

.doc-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.doc-icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--doc-radius-sm);
  border: 1px solid var(--doc-border);
  background: var(--doc-surface);
  color: var(--doc-text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, background 0.2s;
}
.doc-icon-btn:hover {
  border-color: color-mix(in srgb, var(--doc-accent) 45%, transparent);
  background: var(--doc-accent-soft);
}

.doc-icon-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.doc-shell {
  display: grid;
  grid-template-columns: minmax(220px, 280px) 1fr;
  max-width: 1440px;
  margin: 0 auto;
  min-height: calc(100vh - var(--header-h));
}

@media (max-width: 900px) {
  .doc-shell {
    grid-template-columns: 1fr;
  }
}

.doc-sidebar {
  position: sticky;
  top: var(--header-h);
  align-self: start;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 0;
  background: var(--doc-sidebar);
  border-right: 1px solid var(--doc-border);
}

@media (max-width: 900px) {
  .doc-sidebar {
    position: relative;
    top: 0;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--doc-border);
    padding: 0;
  }
}

.doc-sidebar-details {
  border: none;
  margin: 0;
}

.doc-sidebar-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--doc-text);
  background: var(--doc-sidebar);
  border-bottom: 1px solid var(--doc-border);
  user-select: none;
}

.doc-sidebar-summary::-webkit-details-marker {
  display: none;
}

.doc-sidebar-summary-text {
  letter-spacing: 0.06em;
}

.doc-sidebar-chevron {
  flex-shrink: 0;
  opacity: 0.65;
  transition: transform 0.2s ease;
}

.doc-sidebar-details[open] .doc-sidebar-chevron {
  transform: rotate(180deg);
}

.doc-sidebar-details .doc-nav {
  padding: 20px 18px 28px;
}

@media (min-width: 901px) {
  .doc-sidebar-details {
    display: block;
    padding: 0;
  }

  .doc-sidebar-summary {
    display: none;
  }

  .doc-sidebar-details .doc-nav {
    padding: 28px 20px 40px;
  }
}

.doc-nav-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--doc-muted);
  margin: 20px 0 10px;
}
.doc-nav-label:first-child {
  margin-top: 0;
}

.doc-nav a {
  display: block;
  padding: 8px 12px;
  margin: 2px 0;
  border-radius: var(--doc-radius-sm);
  color: var(--doc-text);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s;
}
.doc-nav a:hover {
  background: var(--doc-accent-soft);
  border-color: color-mix(in srgb, var(--doc-accent) 20%, transparent);
  text-decoration: none;
}

.doc-main {
  padding: clamp(28px, 4vw, 48px) clamp(24px, 4vw, 56px) 80px;
  max-width: 820px;
}

.doc-hero {
  margin-bottom: 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--doc-border);
}

.doc-hero h1 {
  font-family: var(--doc-serif);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin: 0 0 12px;
  line-height: 1.25;
}

.doc-lead {
  font-size: 1.05rem;
  color: var(--doc-muted);
  margin: 0;
  max-width: 52ch;
}

.doc-meta {
  margin: 20px 0 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--doc-muted);
  max-width: 56ch;
}

.doc-meta-label {
  font-weight: 600;
  color: color-mix(in srgb, var(--doc-muted) 85%, var(--doc-text));
  margin-right: 6px;
}

.doc-meta-sep {
  margin: 0 0.5em;
  opacity: 0.65;
}

.doc-section {
  margin-bottom: 48px;
}

.doc-section h2 {
  font-family: var(--doc-serif);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 8px;
  padding-top: 8px;
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.doc-section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--doc-text);
}

.doc-kicker {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--doc-accent);
  margin-bottom: 6px;
}

.doc-p {
  margin: 0 0 14px;
  color: color-mix(in srgb, var(--doc-text) 88%, var(--doc-muted));
}

.doc-list {
  margin: 0 0 16px;
  padding-left: 1.25rem;
}
.doc-list li {
  margin-bottom: 8px;
  color: color-mix(in srgb, var(--doc-text) 88%, var(--doc-muted));
}

.doc-callout {
  border-radius: var(--doc-radius);
  padding: 16px 18px;
  margin: 20px 0;
  border: 1px solid var(--doc-border);
  background: var(--doc-surface);
  box-shadow: var(--doc-shadow);
}

.doc-callout--tip {
  border-left: 4px solid var(--doc-accent);
  background: color-mix(in srgb, var(--doc-accent-soft) 40%, var(--doc-surface));
}

.doc-callout-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--doc-accent);
  margin-bottom: 8px;
}

.doc-table-wrap {
  overflow-x: auto;
  margin: 16px 0 24px;
  border-radius: var(--doc-radius);
  border: 1px solid var(--doc-border);
  background: var(--doc-surface);
  box-shadow: var(--doc-shadow);
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.doc-table th,
.doc-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--doc-border);
  vertical-align: top;
}

.doc-table th {
  font-weight: 600;
  background: color-mix(in srgb, var(--doc-bg) 50%, var(--doc-surface));
  color: var(--doc-muted);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.doc-table tr:last-child td {
  border-bottom: none;
}

.doc-table code {
  font-family: var(--doc-mono);
  font-size: 0.8rem;
  background: var(--doc-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
}

.doc-steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
}

.doc-steps li {
  position: relative;
  padding-left: 48px;
  margin-bottom: 20px;
  min-height: 36px;
}

.doc-steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--doc-accent);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

kbd {
  font-family: var(--doc-mono);
  font-size: 0.8em;
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid var(--doc-border);
  background: var(--doc-code-bg);
  box-shadow: 0 1px 0 var(--doc-border);
}

@media print {
  html {
    scroll-behavior: auto;
  }

  body {
    background: #fff !important;
    color: #111 !important;
    font-size: 11pt;
    line-height: 1.5;
  }

  [data-theme="dark"] {
    --doc-text: #111;
    --doc-muted: #444;
    --doc-border: #ccc;
    --doc-code-bg: #f0f0f0;
    --doc-surface: #fff;
    --doc-bg: #fff;
  }

  .doc-no-print,
  .doc-skip-link {
    display: none !important;
  }

  .doc-header {
    position: static;
    border-bottom: 1px solid #ccc;
    background: #fff !important;
    backdrop-filter: none;
    page-break-after: avoid;
  }

  .doc-shell {
    display: block;
    max-width: none;
  }

  .doc-sidebar {
    position: static;
    border: 1px solid #ccc;
    border-radius: 8px;
    padding: 12px 14px !important;
    margin: 0 0 16px 0;
    page-break-inside: avoid;
    background: #fafafa !important;
  }

  .doc-sidebar-details {
    display: block !important;
  }

  .doc-sidebar-summary {
    display: none !important;
  }

  .doc-sidebar-details .doc-nav {
    padding: 0 !important;
    display: block !important;
  }

  .doc-nav a {
    color: #000 !important;
    border: none !important;
    padding: 4px 0 !important;
    background: transparent !important;
  }

  .doc-main {
    max-width: none;
    padding: 0 12px 24px !important;
  }

  .doc-hero {
    border-bottom-color: #ccc;
    page-break-after: avoid;
  }

  .doc-section {
    page-break-inside: avoid;
  }

  .doc-table-wrap {
    box-shadow: none;
    border-color: #ccc;
  }

  .doc-callout {
    box-shadow: none;
    border-color: #ccc;
    background: #f9f9f9 !important;
    page-break-inside: avoid;
  }

  a {
    text-decoration: underline;
    color: #000 !important;
  }

  .doc-table th {
    background: #eee !important;
    color: #333 !important;
  }
}