@import url('https://fonts.googleapis.com/css2?family=Exo:wght@300;400;500;600;700&family=Roboto+Mono:wght@300;400;500;700&display=swap');

/* ===== CSS 变量与基础重置 ===== */
:root {
  --bg: #c8e0f4;
  --card: #f5e0e8;
  --ink: #171f26;
  --ink-mid: #3a4a5a;
  --ink-light: #6a7f94;
  --accent: #a0bcd8;
  --accent2: #e8c4d0;
  --white: #ffffff;
  --radius: 16px;
  --radius-lg: 28px;
  --shadow-out: -5px -5px 15px rgba(255,255,255,0.75), 5px 5px 15px rgba(23,31,38,0.15);
  --shadow-in: inset -3px -3px 8px rgba(255,255,255,0.7), inset 3px 3px 8px rgba(23,31,38,0.12);
  --shadow-card: -6px -6px 18px rgba(255,255,255,0.8), 6px 6px 18px rgba(23,31,38,0.14);
  --font-main: 'Exo', system-ui, -apple-system, sans-serif;
  --font-mono: 'Roboto Mono', 'Courier New', monospace;
  --transition: 150ms ease;
  --max-w: 1200px;
  --content-w: 860px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--ink);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

a:hover {
  color: var(--ink-mid);
  opacity: 0.8;
}

ul, ol {
  list-style: none;
}

/* ===== 公告栏 ===== */
.announcement-bar {
  background: linear-gradient(135deg, var(--ink) 0%, #2c3e50 100%);
  color: var(--bg);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 8px 16px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  box-shadow: 0 2px 12px rgba(23,31,38,0.1);
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  gap: 16px;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-right {
  justify-content: flex-end;
}

.nav-brand {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  white-space: nowrap;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.brand-text {
  font-weight: 700;
  letter-spacing: -0.01em;
}

.nav-link {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-mid);
  padding: 8px 10px;
  border-radius: 10px;
  white-space: nowrap;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.nav-link:hover {
  color: var(--ink);
  background: linear-gradient(145deg, var(--bg), var(--accent));
  box-shadow: var(--shadow-out);
  opacity: 1;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  min-height: 40px;
  min-width: 40px;
  border-radius: 10px;
  transition: box-shadow var(--transition);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle:hover {
  box-shadow: var(--shadow-out);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--bg);
  padding: 12px 24px 20px;
  box-shadow: 0 4px 16px rgba(23,31,38,0.12);
}

.mobile-nav.is-open {
  display: flex;
}

.mobile-nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-mid);
  padding: 12px 16px;
  border-radius: 12px;
  min-height: 44px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(23,31,38,0.06);
  transition: background var(--transition);
}

.mobile-nav-link:hover {
  background: linear-gradient(145deg, var(--bg), var(--accent));
  color: var(--ink);
  opacity: 1;
}

/* ===== Neumorphism 卡片基础 ===== */
.neu-card {
  background: linear-gradient(145deg, #d4e8f8, #bcd4ec);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}

.neu-card:hover {
  box-shadow: -8px -8px 22px rgba(255,255,255,0.85), 8px 8px 22px rgba(23,31,38,0.18);
  transform: translateY(-2px);
}

.neu-card:active {
  box-shadow: var(--shadow-in);
  transform: scale(0.98);
}

/* ===== 页面类型徽章 ===== */
.page-type-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 20px;
  background: linear-gradient(145deg, var(--ink), #2c3e50);
  color: var(--bg);
  margin-bottom: 12px;
}

.compare-badge { background: linear-gradient(145deg, #4a6fa5, #2c4a7c); }
.review-badge { background: linear-gradient(145deg, #7a4a6a, #5c2a4c); }
.faq-badge { background: linear-gradient(145deg, #3a6a5a, #1c4a3c); }
.about-badge { background: linear-gradient(145deg, #5a4a8a, #3c2a6c); }
.privacy-badge { background: linear-gradient(145deg, var(--ink-mid), var(--ink)); }

/* ===== 日期样式 ===== */
.page-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-light);
  margin-right: 6px;
}

.mod-date {
  color: var(--accent);
}

.page-meta {
  margin-bottom: 10px;
  min-height: 20px;
}

/* ===== 主要内容区 ===== */
.page-main,
.home-main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.page-article,
.home-article {
  padding-top: 0;
}

/* ===== 页面英雄区 ===== */
.page-hero-section {
  padding: 48px 0 36px;
  border-bottom: 1px solid rgba(23,31,38,0.08);
  margin-bottom: 36px;
}

.page-h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.page-desc {
  font-size: 1.05rem;
  color: var(--ink-mid);
  line-height: 1.6;
  max-width: 640px;
}

/* ===== 内容与侧边栏布局 ===== */
.content-with-aside {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 36px;
  align-items: start;
}

.content-section {
  min-width: 0;
}

/* ===== 侧边栏 ===== */
.page-aside,
.home-aside {
  position: sticky;
  top: 80px;
}

.aside-card {
  background: linear-gradient(145deg, #f8ecf2, #ead4e0);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
  margin-bottom: 20px;
}

.aside-card-alt {
  background: linear-gradient(145deg, #d4e8f8, #bcd4ec);
}

.aside-title {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ink);
  margin-bottom: 14px;
  font-family: var(--font-mono);
}

.aside-title span {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 2px;
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.aside-links li a {
  display: block;
  font-size: 0.88rem;
  color: var(--ink-mid);
  padding: 8px 12px;
  border-radius: 10px;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  background: linear-gradient(145deg, rgba(255,255,255,0.3), rgba(255,255,255,0.1));
}

.aside-links li a:hover {
  background: linear-gradient(145deg, rgba(255,255,255,0.5), rgba(255,255,255,0.2));
  box-shadow: -2px -2px 6px rgba(255,255,255,0.6), 2px 2px 6px rgba(23,31,38,0.1);
  color: var(--ink);
  opacity: 1;
}

/* ===== 正文排版 ===== */
.prose {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink);
}

.prose h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 2em 0 0.8em;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.prose h2 span {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 2px;
}

.prose h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5em 0 0.6em;
  color: var(--ink-mid);
}

.prose h3 span {
  font-weight: 600;
}

.prose p {
  margin-bottom: 1.2em;
}

.prose ul, .prose ol {
  margin-bottom: 1.2em;
  padding-left: 1.5em;
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 0.5em;
}

.prose strong {
  font-weight: 600;
  color: var(--ink);
}

.prose a {
  color: var(--ink-mid);
  border-bottom: 1px solid var(--ink-light);
  transition: border-color var(--transition);
}

.prose a:hover {
  border-color: var(--ink);
  color: var(--ink);
  opacity: 1;
}

.prose table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-bottom: 1.5em;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-out);
}

.prose th, .prose td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(23,31,38,0.08);
}

.prose th {
  background: linear-gradient(145deg, var(--ink), #2c3e50);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(23,31,38,0.06);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ===== 首页英雄区 ===== */
.hero-section {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 80px 0 60px;
}

.hero-inner {
  max-width: 680px;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--ink-light);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.hero-h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--ink-mid);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--ink), #2c3e50);
  color: var(--bg);
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: -4px -4px 12px rgba(255,255,255,0.5), 4px 4px 12px rgba(23,31,38,0.3);
  transition: box-shadow var(--transition), transform var(--transition);
  min-height: 48px;
}

.btn-primary:hover {
  box-shadow: -6px -6px 16px rgba(255,255,255,0.6), 6px 6px 16px rgba(23,31,38,0.35);
  transform: translateY(-2px);
  color: var(--bg);
  opacity: 1;
}

.btn-primary:active {
  box-shadow: var(--shadow-in);
  transform: scale(0.97);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  border-radius: var(--radius);
  background: linear-gradient(145deg, #d4e8f8, #bcd4ec);
  color: var(--ink);
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: var(--shadow-out);
  transition: box-shadow var(--transition), transform var(--transition);
  min-height: 48px;
}

.btn-secondary:hover {
  box-shadow: -6px -6px 16px rgba(255,255,255,0.8), 6px 6px 16px rgba(23,31,38,0.18);
  transform: translateY(-2px);
  color: var(--ink);
  opacity: 1;
}

.btn-secondary:active {
  box-shadow: var(--shadow-in);
  transform: scale(0.97);
}

/* ===== 区块标题 ===== */
.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.section-title span {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 3px;
}

/* ===== 首页榜单网格 ===== */
.home-ranking-section {
  padding: 48px 0 36px;
}

.ranking-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.rank-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  background: linear-gradient(145deg, #d4e8f8, #bcd4ec);
}

.rank-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--ink-light);
  min-width: 44px;
  letter-spacing: -0.02em;
}

.rank-card-body {
  flex: 1;
  min-width: 0;
}

.rank-card-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.4;
}

.rank-card-title a {
  color: var(--ink);
}

.rank-card-title a:hover {
  color: var(--ink-mid);
  opacity: 1;
}

.rank-card-desc {
  font-size: 0.82rem;
  color: var(--ink-light);
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.rank-card-arrow {
  font-size: 1.2rem;
  color: var(--ink-light);
  flex-shrink: 0;
  min-height: 40px;
  display: flex;
  align-items: center;
  padding: 0 8px;
  transition: transform var(--transition), color var(--transition);
}

.rank-card:hover .rank-card-arrow {
  transform: translateX(4px);
  color: var(--ink);
}

/* ===== 首页内容区 ===== */
.home-content-section {
  padding: 36px 0;
  border-top: 1px solid rgba(23,31,38,0.08);
  border-bottom: 1px solid rgba(23,31,38,0.08);
  margin-bottom: 36px;
}

.home-prose {
  max-width: var(--content-w);
}

/* ===== 首页两栏布局 ===== */
.home-two-col {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 36px;
  align-items: start;
  margin-bottom: 48px;
}

/* ===== 对比卡片 ===== */
.home-compare-section {
  min-width: 0;
}

.compare-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.compare-card {
  padding: 24px;
  background: linear-gradient(145deg, #f8ecf2, #ead4e0);
}

.compare-tag,
.review-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
}

.compare-tag {
  background: linear-gradient(145deg, var(--ink), #2c3e50);
  color: var(--bg);
}

.review-tag {
  background: linear-gradient(145deg, #7a4a6a, #5c2a4c);
  color: var(--white);
}

.compare-card-title,
.review-card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.compare-card-title a,
.review-card-title a {
  color: var(--ink);
}

.compare-card-desc,
.review-card-desc {
  font-size: 0.88rem;
  color: var(--ink-mid);
  margin-bottom: 14px;
  line-height: 1.5;
}

.card-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-light);
  margin-bottom: 10px;
}

.btn-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-mid);
  font-family: var(--font-mono);
  transition: color var(--transition);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.btn-link:hover {
  color: var(--ink);
  opacity: 1;
}

/* ===== 评测网格 ===== */
.home-review-section {
  padding: 36px 0;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.review-card {
  padding: 24px;
  background: linear-gradient(145deg, #d4e8f8, #bcd4ec);
}

/* ===== 榜单页面 ===== */
.ranking-hero {
  background: linear-gradient(145deg, rgba(200,224,244,0.4), rgba(245,224,232,0.2));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 48px 32px 36px;
  margin-bottom: 0;
}

.ranking-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  margin-bottom: 36px;
  background: linear-gradient(145deg, #d4e8f8, #bcd4ec);
}

.ranking-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 520px;
}

.ranking-table thead tr {
  background: linear-gradient(145deg, var(--ink), #2c3e50);
}

.ranking-table th {
  padding: 14px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--bg);
}

.ranking-table tbody tr {
  transition: background var(--transition);
  border-bottom: 1px solid rgba(23,31,38,0.06);
}

.ranking-table tbody tr:hover {
  background: rgba(255,255,255,0.3);
}

.ranking-table td {
  padding: 14px 16px;
  vertical-align: middle;
}

.td-num {
  width: 64px;
}

.table-rank {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink-light);
}

.td-title a {
  font-weight: 600;
  color: var(--ink);
  font-size: 0.95rem;
}

.td-desc {
  font-size: 0.85rem;
  color: var(--ink-mid);
}

.td-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-light);
  white-space: nowrap;
}

/* ===== 对比页 ===== */
.compare-hero {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 48px 32px 36px;
  background: linear-gradient(145deg, rgba(245,224,232,0.5), rgba(200,224,244,0.2));
}

.compare-intro {
  padding: 18px 22px;
  background: linear-gradient(145deg, #f8ecf2, #ead4e0);
  margin-bottom: 24px;
}

.compare-intro-text {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--ink-mid);
  margin: 0;
}

/* ===== FAQ 页 ===== */
.faq-hero {
  padding: 48px 32px 36px;
}

.faq-intro {
  padding: 18px 22px;
  background: linear-gradient(145deg, #d4e8f8, #bcd4ec);
  margin-bottom: 24px;
}

.faq-intro p {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--ink-mid);
}

.faq-prose :is(h2, h3) {
  margin-top: 2em;
}

/* ===== 关于页 ===== */
.about-hero {
  padding: 48px 32px 36px;
}

.about-stats-row {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.about-stat-card {
  flex: 1;
  min-width: 120px;
  padding: 20px 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  display: block;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--ink-light);
  display: block;
}

/* ===== 隐私页 ===== */
.privacy-hero {
  padding: 48px 32px 36px;
}

/* ===== 评测页英雄图 ===== */
.review-hero-img-wrap {
  margin-top: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.review-hero-img {
  width: 100%;
  height: auto;
}

/* ===== 页脚 ===== */
.site-footer {
  background: linear-gradient(160deg, #1a2530 0%, var(--ink) 100%);
  color: var(--bg);
  padding: 60px 24px 0;
  margin-top: 80px;
}

.footer-brand-block {
  text-align: center;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(200,224,244,0.15);
  margin-bottom: 48px;
}

.footer-brand-text {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--bg);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 0.95rem;
  color: rgba(200,224,244,0.6);
  max-width: 500px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-bottom: 48px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: rgba(200,224,244,0.7);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.footer-col-title span {
  border-bottom: 1px solid rgba(200,224,244,0.3);
  padding-bottom: 2px;
}

.footer-nav-dl dt {
  margin-bottom: 8px;
}

.footer-nav-dl dt a,
.footer-link-list li a,
.footer-extra-links li a {
  font-size: 0.88rem;
  color: rgba(200,224,244,0.65);
  min-height: 40px;
  display: flex;
  align-items: center;
  padding: 4px 0;
  transition: color var(--transition);
  line-height: 1.4;
}

.footer-nav-dl dt a:hover,
.footer-link-list li a:hover,
.footer-extra-links li a:hover {
  color: var(--bg);
  opacity: 1;
}

.footer-link-list,
.footer-extra-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-address {
  font-style: normal;
  margin-bottom: 16px;
}

.footer-address-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: rgba(200,224,244,0.5);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.footer-address p {
  font-size: 0.82rem;
  color: rgba(200,224,244,0.5);
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid rgba(200,224,244,0.1);
  padding: 20px 0;
  text-align: center;
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: rgba(200,224,244,0.4);
  letter-spacing: 0.05em;
}

/* ===== 交错动画 ===== */
@media (prefers-reduced-motion: no-preference) {
  .stagger-item {
    opacity: 0;
    transform: translateY(16px);
    animation: fadeUp 0.4s ease forwards;
    animation-delay: calc(var(--stagger, 0) * 80ms);
  }

  @keyframes fadeUp {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  .stagger-item {
    opacity: 1;
    transform: none;
    animation: none;
  }
}

/* ===== 响应式断点 ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .content-with-aside,
  .home-two-col {
    grid-template-columns: 1fr;
  }

  .page-aside,
  .home-aside {
    position: static;
  }

  .ranking-grid {
    grid-template-columns: 1fr;
  }

  .hero-section {
    min-height: auto;
    padding: 48px 0 40px;
  }

  .hero-h1 {
    font-size: 1.9rem;
  }

  .home-compare-section,
  .home-review-section {
    padding: 24px 0;
  }
}

@media (max-width: 768px) {
  .main-nav {
    height: 56px;
    padding: 0 16px;
  }

  .nav-left,
  .nav-right {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .page-main,
  .home-main {
    padding: 0 16px 48px;
  }

  .site-footer {
    padding: 40px 16px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-brand-text {
    font-size: 1.8rem;
  }

  .ranking-hero,
  .compare-hero,
  .faq-hero,
  .about-hero,
  .privacy-hero {
    padding: 32px 0 24px;
  }

  .about-stats-row {
    gap: 12px;
  }

  .about-stat-card {
    min-width: 100px;
  }

  .review-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .page-h1 {
    font-size: 1.5rem;
  }

  .hero-h1 {
    font-size: 1.6rem;
  }

  .ranking-table-wrap {
    border-radius: var(--radius);
  }

  .table-rank {
    font-size: 0.95rem;
  }
}