/* 汽配旺旺 — 法务与官网静态页共享样式（与 App 主色协调） */
:root {
  --primary: #4a90e2;
  --primary-dark: #3a7bc8;
  --navy: #2c3e50;
  --text: #1a2530;
  --muted: #5c6b7a;
  --bg-top: #f5faff;
  --bg-bottom: #e8f1fc;
  --card: #ffffff;
  --border: #d6e4f0;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(44, 62, 80, 0.08);
  --max: 900px;
  --max-wide: 1100px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  min-height: 100vh;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(245, 250, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--navy);
}

.brand__mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 0.95rem;
}

.nav a {
  color: var(--navy);
  font-weight: 500;
}

.nav a:hover {
  color: var(--primary);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.wrap--wide {
  max-width: var(--max-wide);
}

.hero {
  padding: 48px 24px 56px;
  text-align: center;
}

.hero__inner {
  max-width: var(--max-wide);
  margin: 0 auto;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.02em;
}

.hero__lead {
  margin: 0 auto 28px;
  max-width: 640px;
  font-size: 1.1rem;
  color: var(--muted);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(74, 144, 226, 0.35);
}

.btn--primary:hover {
  box-shadow: 0 6px 20px rgba(74, 144, 226, 0.45);
}

.btn--ghost {
  background: var(--card);
  color: var(--navy);
  border: 1px solid var(--border);
}

.section {
  padding: 24px 0 8px;
}

.section h2 {
  margin: 0 0 8px;
  font-size: 1.35rem;
  color: var(--navy);
}

.section__sub {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 0.98rem;
}

.grid {
  display: grid;
  gap: 18px;
}

@media (min-width: 720px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  color: var(--navy);
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(74, 144, 226, 0.12);
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 600;
}

.list-check {
  margin: 0;
  padding-left: 1.2em;
  color: var(--muted);
}

.list-check li {
  margin-bottom: 8px;
}

.legal-doc h1 {
  margin: 0 0 12px;
  font-size: 1.75rem;
  color: var(--navy);
}

.legal-meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

.legal-doc h2 {
  margin: 28px 0 12px;
  font-size: 1.15rem;
  color: var(--navy);
}

.legal-doc p,
.legal-doc li {
  color: var(--text);
}

.legal-doc ul {
  padding-left: 1.25em;
}

.legal-doc li {
  margin-bottom: 8px;
}

.site-footer {
  margin-top: 48px;
  padding: 28px 24px;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.6);
}

.site-footer__inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.note-box {
  margin-top: 24px;
  padding: 16px 18px;
  border-radius: var(--radius);
  background: rgba(74, 144, 226, 0.08);
  border: 1px solid var(--border);
  font-size: 0.92rem;
  color: var(--muted);
}