/* ==========================================================================
   易馆通 · 法律页面（隐私政策 / 服务条款）共享样式
   设计语言与 index.html 一致：Minimalist Modern（暖灰骨架 + 电光蓝签名）
   ========================================================================== */

:root {
  --font-display: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'HarmonyOS Sans SC', 'MiSans',
    'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei',
    'Noto Sans SC', system-ui, sans-serif;

  --bg: #fafafa;
  --surface: #ffffff;
  --surface-muted: #f1f5f9;
  --text: #0f172a;
  --text-secondary: #64748b;
  --text-hint: #94a3b8;
  --border: #e2e8f0;
  --accent: #0052ff;
  --accent-2: #4d7cff;
  --gradient: linear-gradient(135deg, #0052ff, #4d7cff);

  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08);
  --shadow-accent: 0 4px 14px rgba(0, 82, 255, 0.25);

  --transition: all 200ms ease-out;
  --wrap: 1080px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent); }

/* 长链接（SDK 隐私政策 URL 等无空格字符串）在窄屏强制断行，防横向溢出 */
.legal-content a { overflow-wrap: anywhere; word-break: break-all; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- 顶栏（与官网同款） ---------- */
.legal-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.legal-header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.legal-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

.legal-brand img { border-radius: 8px; }

.legal-brand-sub {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-hint);
  border-left: 1px solid var(--border);
  padding-left: 10px;
  margin-left: 2px;
}

.legal-back {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: var(--transition);
}

.legal-back:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}

/* ---------- Hero ---------- */
.legal-hero {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.legal-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 240px at 15% 0%, rgba(0, 82, 255, 0.08), transparent 60%),
    radial-gradient(500px 200px at 90% 20%, rgba(77, 124, 255, 0.07), transparent 60%);
  pointer-events: none;
}

.legal-hero-inner {
  position: relative;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 56px 24px 48px;
}

.legal-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: rgba(0, 82, 255, 0.08);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.legal-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gradient);
}

.legal-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 42px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 14px;
}

.legal-hero-sub {
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 640px;
  margin: 0 0 20px;
}

.legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.legal-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--surface-muted);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
}

/* ---------- 主体两栏：目录 + 内容 ---------- */
.legal-body {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px 24px 80px;
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

/* 目录 */
.legal-toc {
  position: sticky;
  top: 88px;
  min-width: 0; /* grid 子项默认 min-width:auto 会把轨道撑成内容宽，必须归零 */
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 12px;
  box-shadow: var(--shadow-sm);
}

.legal-toc-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-hint);
  padding: 0 10px 10px;
  text-transform: uppercase;
}

.legal-toc a {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: var(--transition);
}

.legal-toc a:hover {
  color: var(--text);
  background: var(--surface-muted);
}

.legal-toc a.active {
  color: var(--accent);
  font-weight: 600;
  background: rgba(0, 82, 255, 0.06);
  border-left-color: var(--accent);
}

/* ---------- 内容区 ---------- */
.legal-content { min-width: 0; }

.legal-lead {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 28px;
}

.legal-lead p { color: var(--text-secondary); margin: 0 0 10px; }
.legal-lead p:last-child { margin-bottom: 0; }

.legal-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
  transition: var(--transition);
}

.legal-section:hover { box-shadow: var(--shadow-md); }

.legal-section h2 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.legal-section h2 .sec-no {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: var(--gradient);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  box-shadow: var(--shadow-accent);
}

.legal-section h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 22px 0 10px;
}

.legal-section h3::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 14px;
  border-radius: 2px;
  background: var(--gradient);
  margin-right: 8px;
  vertical-align: -2px;
}

.legal-section p {
  color: #475569;
  margin: 0 0 12px;
}

.legal-section ul {
  margin: 8px 0 14px;
  padding: 0;
  list-style: none;
}

.legal-section li {
  position: relative;
  color: #475569;
  padding-left: 20px;
  margin-bottom: 8px;
}

.legal-section li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--accent-2);
  opacity: 0.55;
}

.legal-section li li { margin-bottom: 6px; }
.legal-section li li::before { background: var(--text-hint); }

.legal-section strong { color: var(--text); font-weight: 600; }

/* 高亮提示块 */
.legal-note {
  background: rgba(0, 82, 255, 0.05);
  border: 1px solid rgba(0, 82, 255, 0.18);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 16px 0;
  color: #475569;
  font-size: 14.5px;
}

/* 页脚 */
.legal-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.legal-footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-hint);
}

.legal-footer a { color: var(--text-secondary); text-decoration: none; }
.legal-footer a:hover { color: var(--accent); }
/* 备案信息整行独占（flex 容器内换行展示） */
.legal-icp { flex-basis: 100%; }

/* ---------- 移动端 ---------- */
@media (max-width: 860px) {
  .legal-body {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 24px;
  }

  .legal-toc {
    position: static;
    display: flex;
    overflow-x: auto;
    gap: 4px;
    padding: 10px;
    scrollbar-width: none;
  }

  .legal-toc::-webkit-scrollbar { display: none; }
  .legal-toc-title { display: none; }

  .legal-toc a {
    flex: none;
    border-left: none;
    padding: 7px 12px;
    font-size: 13px;
    white-space: nowrap;
  }

  .legal-section { padding: 22px 20px; }
  .legal-hero-inner { padding: 40px 24px 36px; }
}

/* 窄屏顶栏：隐藏副标题、压缩返回按钮，避免把页面撑出横向滚动 */
@media (max-width: 640px) {
  .legal-brand-sub { display: none; }
  .legal-header-inner { gap: 10px; padding: 0 16px; }
  .legal-back { padding: 7px 12px; font-size: 13px; }
}