/* 52AV导航 · Nature Distilled 有机质感主题 */
/* Inter + Playfair Display · 主色 #5cc6b0 · 辅色 #d4c4a8 · 墨色 #172623 */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@400&family=Playfair+Display:ital@1&display=swap');

/* ── 设计令牌 ── */
:root {
  --c-mint: #5cc6b0;
  --c-mint-dim: #4aad98;
  --c-mint-pale: #d4f0ea;
  --c-sand: #d4c4a8;
  --c-sand-dark: #b8a98a;
  --c-sand-pale: #f5f0e8;
  --c-ink: #172623;
  --c-ink-80: rgba(23,38,35,.80);
  --c-ink-50: rgba(23,38,35,.50);
  --c-ink-20: rgba(23,38,35,.20);
  --c-bg: #f8f4ee;
  --c-surface: #fffdf8;
  --c-surface-alt: #f2ede4;
  --c-text: #1e2e2b;
  --c-text-muted: #5a6a65;
  --c-border: #e0d8cc;

  --r-card: 28px;
  --r-btn: 14px;
  --r-input: 10px;
  --r-badge: 6px;

  --shadow-soft: 0 2px 12px rgba(23,38,35,.08), 0 1px 3px rgba(23,38,35,.06);
  --shadow-card: 0 4px 24px rgba(23,38,35,.10), 0 1px 4px rgba(23,38,35,.06);
  --shadow-hover: 0 8px 32px rgba(23,38,35,.14), 0 2px 8px rgba(23,38,35,.08);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --header-h: 110px;
  --content-max: 780px;
  --wide-max: 1200px;
  --page-pad: clamp(16px, 4vw, 48px);
}

/* ── 重置 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
dl, dt, dd { margin: 0; padding: 0; }
button, input, select, textarea { font: inherit; }

/* ── 有机纹理覆层 ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .025;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

/* ── 包装器 ── */
.site-wrapper { position: relative; z-index: 1; min-height: 100vh; display: flex; flex-direction: column; }

/* ════════════════════════════════════════
   导航 Header — 两行：品牌行 + 菜单行
════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--c-ink);
  box-shadow: 0 2px 16px rgba(23,38,35,.3);
}

.header-brand-row {
  background: var(--c-ink);
  border-bottom: 1px solid rgba(92,198,176,.15);
  padding: 14px var(--page-pad);
}
.header-brand-inner {
  max-width: var(--wide-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.brand-logo { height: 36px; width: auto; }
.brand-logo-link { display: inline-block; }
.brand-name {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  color: var(--c-mint);
  letter-spacing: .02em;
  line-height: 1.2;
}
.brand-tagline {
  font-size: .75rem;
  color: var(--c-sand);
  opacity: .7;
  letter-spacing: .04em;
}

.site-nav {
  background: rgba(23,38,35,.95);
  backdrop-filter: blur(8px);
}
.nav-inner {
  max-width: var(--wide-max);
  margin: 0 auto;
  padding: 0 var(--page-pad);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  min-height: 52px;
}
.nav-left { display: flex; gap: 4px; justify-content: flex-end; flex-wrap: wrap; }
.nav-right { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-link {
  font-size: .8rem;
  font-weight: 500;
  color: var(--c-sand);
  padding: 10px 10px;
  border-radius: var(--r-badge);
  transition: color .2s ease-out, background .2s ease-out;
  white-space: nowrap;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}
.nav-link:hover { color: var(--c-mint); background: rgba(92,198,176,.08); }

.nav-search { display: flex; align-items: center; }
.search-form { display: flex; gap: 0; }
.search-input {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(92,198,176,.25);
  border-right: none;
  color: var(--c-sand);
  padding: 8px 12px;
  border-radius: var(--r-input) 0 0 var(--r-input);
  font-size: .8rem;
  width: 160px;
  outline: none;
  transition: border-color .2s, background .2s;
}
.search-input::placeholder { color: var(--c-sand); opacity: .4; }
.search-input:focus { border-color: var(--c-mint); background: rgba(92,198,176,.08); }
.search-btn {
  background: var(--c-mint);
  border: 1px solid var(--c-mint);
  color: var(--c-ink);
  padding: 8px 14px;
  border-radius: 0 var(--r-input) var(--r-input) 0;
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
  transition: background .2s;
}
.search-btn:hover { background: var(--c-mint-dim); }

/* ════════════════════════════════════════
   Hero — 首页专用全宽大图
════════════════════════════════════════ */
.hero-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--c-ink);
}
.hero-media {
  position: absolute;
  inset: 0;
}
.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(23,38,35,.82) 0%, rgba(23,38,35,.55) 60%, rgba(23,38,35,.4) 100%);
}
.hero-grid-deco {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(92,198,176,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(92,198,176,.06) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--wide-max);
  width: 100%;
  margin: 0 auto;
  padding: 80px var(--page-pad) 72px;
}
.hero-eyebrow {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--c-mint);
  text-transform: uppercase;
  margin-bottom: 16px;
  opacity: .9;
}
.hero-h1 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(2rem, 5vw, 3.8rem);
  color: #fff;
  line-height: 1.2;
  max-width: 700px;
  margin-bottom: 20px;
}
.hero-desc {
  font-size: 1.05rem;
  color: var(--c-sand);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 32px;
  opacity: .9;
}
.hero-cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--c-mint);
  color: var(--c-ink);
  font-weight: 700;
  font-size: .9rem;
  padding: 13px 28px;
  border-radius: var(--r-btn);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  transition: background .2s, transform .15s ease-out, box-shadow .2s;
  box-shadow: 0 4px 16px rgba(92,198,176,.35);
}
.btn-primary:hover { background: var(--c-mint-dim); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(92,198,176,.45); }
.btn-outline {
  background: transparent;
  color: var(--c-sand);
  font-weight: 600;
  font-size: .9rem;
  padding: 12px 28px;
  border: 1.5px solid rgba(212,196,168,.4);
  border-radius: var(--r-btn);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  transition: border-color .2s, color .2s, background .2s;
}
.btn-outline:hover { border-color: var(--c-mint); color: var(--c-mint); background: rgba(92,198,176,.06); }

/* ════════════════════════════════════════
   页面横幅 Banner（非首页）
════════════════════════════════════════ */
.page-banner {
  background: var(--c-ink);
  padding: 52px var(--page-pad) 48px;
  position: relative;
  overflow: hidden;
}
.page-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(92,198,176,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(92,198,176,.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.banner-inner {
  max-width: var(--wide-max);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.banner-eyebrow {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--c-mint);
  margin-bottom: 12px;
}
.banner-h1 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  color: #fff;
  line-height: 1.25;
  margin-bottom: 12px;
}
.banner-desc {
  font-size: .95rem;
  color: var(--c-sand);
  opacity: .8;
  max-width: 620px;
  line-height: 1.6;
}
.banner-meta {
  margin-top: 12px;
  font-size: .8rem;
  color: var(--c-mint);
  opacity: .7;
}

/* ── Review masthead ── */
.review-masthead {
  position: relative;
  background: var(--c-ink);
  min-height: 260px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.review-hero-wrap { position: absolute; inset: 0; }
.review-hero-img { width: 100%; height: 100%; object-fit: cover; opacity: .35; }
.review-hero-overlay { position: absolute; inset: 0; background: linear-gradient(to top, var(--c-ink) 40%, transparent 100%); }
.review-masthead-content {
  position: relative;
  z-index: 2;
  max-width: var(--wide-max);
  width: 100%;
  margin: 0 auto;
  padding: 48px var(--page-pad) 40px;
}
.review-eyebrow { font-size: .72rem; font-weight: 600; letter-spacing: .14em; color: var(--c-mint); margin-bottom: 10px; }
.review-h1 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  color: #fff;
  line-height: 1.25;
  margin-bottom: 12px;
}
.review-meta-row { display: flex; gap: 18px; flex-wrap: wrap; }
.review-date { font-size: .8rem; color: var(--c-mint); opacity: .75; }

/* ── About masthead ── */
.about-masthead {
  background: linear-gradient(135deg, var(--c-ink) 0%, #1e3530 100%);
  padding: 60px var(--page-pad) 52px;
  border-bottom: 2px solid var(--c-mint);
}
.about-masthead-inner { max-width: var(--wide-max); margin: 0 auto; }
.about-h1 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  color: #fff;
  line-height: 1.2;
  margin-bottom: 14px;
  margin-top: 12px;
}
.about-lead { font-size: 1rem; color: var(--c-sand); opacity: .85; max-width: 560px; line-height: 1.7; }

/* ════════════════════════════════════════
   面包屑
════════════════════════════════════════ */
.breadcrumb-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  color: var(--c-sand);
  opacity: .6;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.breadcrumb-row a { color: var(--c-sand); opacity: .8; transition: color .15s; }
.breadcrumb-row a:hover { color: var(--c-mint); opacity: 1; }
.breadcrumb-row span[aria-hidden] { opacity: .4; }

/* ════════════════════════════════════════
   文章主容器
════════════════════════════════════════ */
.page-article {
  flex: 1;
  background: var(--c-bg);
}

/* 首页 article */
.home-article {
  padding: 0;
}

/* Ranking 文章 — 两栏布局 */
.ranking-article {
  max-width: var(--wide-max);
  margin: 0 auto;
  padding: 48px var(--page-pad);
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}
.article-layout { min-width: 0; }

/* Review 文章 — 宽主栏 + 窄侧栏 */
.review-article {
  max-width: var(--wide-max);
  margin: 0 auto;
  padding: 48px var(--page-pad);
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
}
.review-layout { min-width: 0; }

/* Compare / FAQ / About / Privacy — 单栏居中 */
.compare-article,
.faq-article,
.about-article,
.privacy-article,
.default-article {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 48px var(--page-pad);
}
.about-layout { display: flex; flex-direction: column; gap: 40px; }
.privacy-layout, .faq-layout { display: flex; flex-direction: column; gap: 32px; }

/* ════════════════════════════════════════
   正文排版
════════════════════════════════════════ */
.content-section { margin-bottom: 40px; }
.content-body {
  background: var(--c-surface);
  border-radius: var(--r-card);
  padding: 36px 40px;
  box-shadow: var(--shadow-soft);
}
.content-body h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--c-ink);
  margin: 2rem 0 .8rem;
  padding-bottom: .4rem;
  border-bottom: 2px solid var(--c-mint-pale);
}
.content-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-ink);
  margin: 1.5rem 0 .6rem;
}
.content-body h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
  margin: 1.2rem 0 .4rem;
}
.content-body p { font-size: 1rem; line-height: 1.8; margin-bottom: 1rem; color: var(--c-text); }
.content-body a { color: var(--c-mint-dim); border-bottom: 1px solid rgba(92,198,176,.3); transition: border-color .15s, color .15s; }
.content-body a:hover { color: var(--c-mint); border-bottom-color: var(--c-mint); }
.content-body ul, .content-body ol { margin: .8rem 0 1rem 1.4rem; }
.content-body li { margin-bottom: .4rem; font-size: 1rem; line-height: 1.7; }
.content-body ul li { list-style: disc; }
.content-body ol li { list-style: decimal; }
.content-body table { width: 100%; border-collapse: collapse; margin: 1.2rem 0; font-size: .9rem; }
.content-body th { background: var(--c-mint); color: var(--c-ink); font-weight: 700; padding: 10px 14px; text-align: left; }
.content-body td { padding: 9px 14px; border-bottom: 1px solid var(--c-border); }
.content-body tr:nth-child(even) td { background: var(--c-sand-pale); }
.content-body blockquote {
  border-left: 3px solid var(--c-mint);
  margin: 1.2rem 0;
  padding: 12px 20px;
  background: var(--c-mint-pale);
  border-radius: 0 12px 12px 0;
  font-style: italic;
  color: var(--c-text-muted);
}
.content-body code {
  font-family: var(--font-mono);
  font-size: .85em;
  background: var(--c-surface-alt);
  padding: .1em .4em;
  border-radius: 4px;
  color: var(--c-ink);
}
.content-body pre {
  background: var(--c-ink);
  color: var(--c-sand);
  padding: 18px 22px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: .85rem;
  margin: 1.2rem 0;
}
.content-body pre code { background: none; padding: 0; color: inherit; }
.content-body time { color: var(--c-text-muted); font-size: .88rem; }
.content-body strong { font-weight: 700; color: var(--c-ink); }

/* FAQ 正文特殊样式 */
.faq-content-body h2,
.faq-content-body h3 { scroll-margin-top: calc(var(--header-h) + 16px); }

/* Privacy 正文 */
.privacy-content-body h2 { font-size: 1.3rem; }

/* ════════════════════════════════════════
   段落标题
════════════════════════════════════════ */
.section-heading {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.4rem;
  color: var(--c-ink);
  margin-bottom: 22px;
  padding-left: 14px;
  border-left: 3px solid var(--c-mint);
}

/* ════════════════════════════════════════
   卡片网格（首页子页 / 精选）
════════════════════════════════════════ */
.sub-pages-section, .featured-section {
  padding: 48px var(--page-pad);
  max-width: var(--wide-max);
  margin: 0 auto;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.card-grid dt {
  background: var(--c-surface);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform .22s ease-out, box-shadow .22s ease-out;
}
.card-grid dt:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.card-grid dt a {
  display: flex;
  flex-direction: column;
  padding: 24px 24px 20px;
  height: 100%;
  gap: 8px;
}
.card-thumb { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: 16px; margin-bottom: 6px; }
.card-title { font-weight: 700; font-size: 1rem; color: var(--c-ink); line-height: 1.4; }
.card-desc { font-size: .85rem; color: var(--c-text-muted); line-height: 1.6; }
.card-date { font-size: .78rem; color: var(--c-mint-dim); margin-top: auto; }
.card-grid dd { display: none; }

.card-grid-sm { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

/* ════════════════════════════════════════
   排行榜列表
════════════════════════════════════════ */
.rank-list-section { margin-top: 32px; }
.rank-list { display: flex; flex-direction: column; gap: 12px; }
.rank-list dt {
  background: var(--c-surface);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  transition: transform .2s ease-out, box-shadow .2s ease-out;
  counter-increment: none;
}
.rank-list dt:hover { transform: translateX(4px); box-shadow: var(--shadow-card); }
.rank-list dt a {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 22px;
}
.rank-num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-mint);
  min-width: 36px;
  opacity: .7;
}
.rank-item[data-rank="1"] .rank-num { color: #c8a855; opacity: 1; font-size: 1.5rem; }
.rank-item[data-rank="2"] .rank-num { color: #9aa5a8; opacity: 1; }
.rank-item[data-rank="3"] .rank-num { color: #a07050; opacity: 1; }
.rank-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.rank-title { font-weight: 700; font-size: .95rem; color: var(--c-ink); line-height: 1.4; }
.rank-desc { font-size: .82rem; color: var(--c-text-muted); line-height: 1.5; }
.rank-date { font-size: .78rem; color: var(--c-text-muted); white-space: nowrap; }
.rank-list dd { display: none; }

/* ════════════════════════════════════════
   对比页链接列表
════════════════════════════════════════ */
.compare-links-section { margin-top: 40px; }
.compare-links-dl { display: flex; flex-direction: column; gap: 14px; }
.compare-links-dl dt {
  background: var(--c-surface);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: box-shadow .2s;
}
.compare-links-dl dt:hover { box-shadow: var(--shadow-card); }
.compare-links-dl dt a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 22px;
  gap: 16px;
}
.compare-link-title { font-weight: 600; font-size: .95rem; color: var(--c-ink); }
.compare-link-desc { font-size: .83rem; color: var(--c-text-muted); }
.compare-links-dl dd { font-size: .8rem; color: var(--c-mint); padding: 0 22px 12px; }

.content-nav-block { padding: 0; }
.inline-links-dl { display: flex; flex-direction: column; gap: 12px; }
.inline-links-dl dt a {
  font-weight: 600;
  color: var(--c-mint-dim);
  font-size: .93rem;
  transition: color .15s;
}
.inline-links-dl dt a:hover { color: var(--c-mint); }
.inline-links-dl dd { font-size: .83rem; color: var(--c-text-muted); margin-top: 2px; margin-left: 2px; }

/* FAQ 相关资源 */
.faq-related-dl { display: flex; flex-direction: column; gap: 14px; }
.faq-related-dl dt a { font-weight: 600; color: var(--c-mint-dim); font-size: .95rem; transition: color .15s; }
.faq-related-dl dt a:hover { color: var(--c-mint); }
.faq-related-dl dd { font-size: .85rem; color: var(--c-text-muted); margin-top: 3px; padding-left: 2px; }

.faq-nav-section { margin-top: 32px; }
.privacy-footer-links { margin-top: 32px; }

/* About 链接 */
.about-links-dl { display: flex; flex-direction: column; gap: 16px; }
.about-links-dl dt a { font-weight: 600; color: var(--c-mint-dim); font-size: .95rem; transition: color .15s; }
.about-links-dl dt a:hover { color: var(--c-mint); }
.about-links-dl dd { font-size: .85rem; color: var(--c-text-muted); margin-top: 3px; }
.about-principles-section { background: var(--c-surface); border-radius: var(--r-card); padding: 30px 36px; box-shadow: var(--shadow-soft); }

/* ════════════════════════════════════════
   侧边栏
════════════════════════════════════════ */
.article-sidebar, .review-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 16px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.sidebar-widget {
  background: var(--c-surface);
  border-radius: 20px;
  padding: 22px 22px;
  box-shadow: var(--shadow-soft);
}
.widget-title {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--c-text-muted);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--c-border);
}
.sidebar-nav-dl, .sidebar-review-dl { display: flex; flex-direction: column; gap: 6px; }
.sidebar-nav-dl dt a, .sidebar-review-dl dt a {
  font-size: .85rem;
  font-weight: 500;
  color: var(--c-text);
  padding: 6px 8px;
  border-radius: 8px;
  display: block;
  transition: background .15s, color .15s;
  line-height: 1.4;
}
.sidebar-nav-dl dt a:hover, .sidebar-review-dl dt a:hover { background: var(--c-mint-pale); color: var(--c-ink); }
.sidebar-nav-dl dd, .sidebar-review-dl dd { font-size: .75rem; color: var(--c-mint-dim); padding-left: 8px; margin-bottom: 4px; }

/* ════════════════════════════════════════
   页脚 Footer — 四栏
════════════════════════════════════════ */
.site-footer {
  background: var(--c-ink);
  color: var(--c-sand);
  margin-top: auto;
}
.footer-grid {
  max-width: var(--wide-max);
  margin: 0 auto;
  padding: 56px var(--page-pad) 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
}
.footer-col-title {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--c-mint);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(92,198,176,.2);
}
.footer-about-text { font-size: .82rem; line-height: 1.7; color: var(--c-sand); opacity: .7; }

/* 页脚 dl > dt/dd > a 结构 */
.footer-nav-dl { display: flex; flex-direction: column; gap: 2px; }
.footer-nav-dl dt a {
  font-size: .83rem;
  color: var(--c-sand);
  opacity: .7;
  padding: 5px 0;
  display: block;
  transition: opacity .15s, color .15s;
  min-height: 32px;
  display: flex;
  align-items: center;
}
.footer-nav-dl dt a:hover { opacity: 1; color: var(--c-mint); }
.footer-nav-dl dd { display: none; }

.footer-bottom {
  border-top: 1px solid rgba(92,198,176,.12);
  padding: 24px var(--page-pad);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-copy { font-size: .82rem; color: var(--c-sand); opacity: .6; }
.footer-disclaimer { font-size: .75rem; color: var(--c-sand); opacity: .4; }

/* ════════════════════════════════════════
   Scroll Reveal 动效
════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease-out, transform .55s ease-out;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ════════════════════════════════════════
   响应式断点
════════════════════════════════════════ */

/* 平板 ≤ 960px */
@media (max-width: 960px) {
  .ranking-article, .review-article {
    grid-template-columns: 1fr;
    padding: 32px var(--page-pad);
  }
  .article-sidebar, .review-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .nav-inner { grid-template-columns: 1fr auto; gap: 8px; }
  .nav-right { display: none; }
  .nav-left { justify-content: flex-start; gap: 2px; }
  .search-input { width: 130px; }
}

/* 移动端 ≤ 640px */
@media (max-width: 640px) {
  :root { --page-pad: 16px; }

  .header-brand-row { padding: 10px 16px; }
  .brand-name { font-size: 1.3rem; }
  .brand-tagline { font-size: .7rem; }

  .nav-inner { grid-template-columns: 1fr auto; min-height: 48px; padding: 0 12px; }
  .nav-left { gap: 0; }
  .nav-link { font-size: .75rem; padding: 10px 7px; }
  .search-input { width: 100px; font-size: .75rem; }

  .hero-section { min-height: 65vh; }
  .hero-content { padding: 48px 16px 48px; }
  .hero-h1 { font-size: 1.7rem; }
  .hero-desc { font-size: .92rem; }
  .hero-cta-row { flex-direction: column; gap: 10px; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }

  .banner-h1 { font-size: 1.4rem; }
  .page-banner { padding: 36px 16px 32px; }

  .review-masthead { min-height: 200px; }
  .review-masthead-content { padding: 32px 16px 28px; }
  .review-h1 { font-size: 1.35rem; }

  .about-masthead { padding: 40px 16px 36px; }
  .about-h1 { font-size: 1.5rem; }

  .compare-article,
  .faq-article,
  .about-article,
  .privacy-article,
  .default-article { padding: 28px 16px; }

  .content-body { padding: 22px 18px; }
  .content-body h2 { font-size: 1.2rem; }

  .sub-pages-section, .featured-section { padding: 32px 16px; }
  .card-grid { grid-template-columns: 1fr; gap: 16px; }

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

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 20px; padding: 36px 16px 28px; }
  .footer-col:nth-child(3), .footer-col:nth-child(4) { display: none; }

  .rank-list dt a { padding: 14px 16px; gap: 12px; }
  .rank-num { font-size: 1.1rem; min-width: 28px; }
}

/* 极小屏 ≤ 375px */
@media (max-width: 375px) {
  .nav-left .nav-link:nth-child(n+3) { display: none; }
  .search-form { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-col:nth-child(3), .footer-col:nth-child(4) { display: none; }
}