/* ============================================
   Metro Mosaic — 都市拼贴式资讯平台
   不规则拼贴 × 杂志封面 × 彩色标签 × 轻量动画
   ============================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

:root {
  --bg-base: #0e0e10;
  --bg-card: #18181b;
  --bg-card-hover: #1e1e22;
  --bg-elevated: #222226;
  --text-primary: #f0f0f2;
  --text-secondary: #a0a0a8;
  --text-muted: #606068;
  --accent-coral: #ff6b5a;
  --accent-cyan: #00d4ff;
  --accent-lime: #a3e635;
  --accent-amber: #fbbf24;
  --accent-violet: #a78bfa;
  --accent-rose: #fb7185;
  --accent-coral-glow: rgba(255,107,90,0.15);
  --accent-cyan-glow: rgba(0,212,255,0.12);
  --accent-lime-glow: rgba(163,230,53,0.12);
  --accent-amber-glow: rgba(251,191,36,0.12);
  --accent-violet-glow: rgba(167,139,250,0.12);
  --accent-rose-glow: rgba(251,113,133,0.12);
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ===== 导航栏 ===== */
.mm-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: rgba(14,14,16,0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.mm-nav-inner {
  max-width: 1440px;
  margin: 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
}
.mm-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.mm-logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent-coral), var(--accent-amber));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 800;
  color: #0e0e10;
}
.mm-nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.mm-nav-links a {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.3s;
  position: relative;
}
.mm-nav-links a:hover { color: var(--accent-coral); }
.mm-nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-coral);
  border-radius: 1px;
  transition: width 0.3s var(--ease-out);
}
.mm-nav-links a:hover::after { width: 100%; }
.mm-nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.mm-search-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: background 0.3s, color 0.3s;
  color: var(--text-muted);
}
.mm-search-btn:hover { background: rgba(255,255,255,0.06); color: var(--text-primary); }
.mm-search-btn svg { width: 18px; height: 18px; }
.mm-mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}
.mm-mobile-menu-btn svg { width: 22px; height: 22px; }

/* ===== 搜索覆盖层 ===== */
.mm-search-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(14,14,16,0.8);
  backdrop-filter: blur(12px);
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 14vh;
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.mm-search-overlay.active { opacity: 1; pointer-events: all; }
.mm-search-overlay-inner {
  width: 100%; max-width: 600px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 28px; position: relative;
  max-height: 70vh; overflow-y: auto;
}
.mm-search-close {
  position: absolute; top: 12px; right: 16px;
  font-size: 24px; background: none; border: none;
  cursor: pointer; color: var(--text-muted); line-height: 1;
}
.mm-search-close:hover { color: var(--text-primary); }
.mm-search-box {
  display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding-bottom: 16px; margin-bottom: 16px;
}
.mm-search-box svg { width: 20px; height: 20px; color: var(--text-muted); flex-shrink: 0; }
.mm-search-input {
  width: 100%; border: none; outline: none;
  font-size: 16px; font-family: var(--font-body);
  background: transparent; color: var(--text-primary);
}
.mm-search-input::placeholder { color: var(--text-muted); }
.mm-search-results { display: flex; flex-direction: column; gap: 4px; }
.mm-search-result-item {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 8px; border-radius: 8px;
  text-decoration: none; color: inherit; transition: background 0.2s;
}
.mm-search-result-item:hover { background: rgba(255,255,255,0.04); }
.mm-search-result-thumb {
  width: 56px; height: 40px; border-radius: 4px;
  overflow: hidden; flex-shrink: 0; background: var(--bg-elevated);
}
.mm-search-result-thumb img { width: 100%; height: 100%; object-fit: cover; }
.mm-search-result-info { flex: 1; min-width: 0; }
.mm-search-result-cat {
  font-size: 10px; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--accent-coral); margin-bottom: 2px;
}
.mm-search-result-title {
  font-size: 13px; line-height: 1.4;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.mm-search-empty { text-align: center; padding: 24px; color: var(--text-muted); font-size: 14px; }

/* ===== Mosaic 主拼贴区 ===== */
.mm-mosaic {
  max-width: 1440px;
  margin: 0 auto;
  padding: 40px 32px 0;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(80px, auto);
  gap: 16px;
}

/* 大图卡 - 占 7 列 4 行 */
.mm-mosaic-hero {
  grid-column: span 7;
  grid-row: span 4;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
}
.mm-mosaic-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}
.mm-mosaic-hero:hover img { transform: scale(1.04); }
.mm-mosaic-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14,14,16,0.85) 0%, rgba(14,14,16,0.1) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  transition: background 0.4s;
}
.mm-mosaic-hero:hover .mm-mosaic-hero-overlay {
  background: linear-gradient(to top, rgba(14,14,16,0.9) 0%, rgba(14,14,16,0.2) 50%, transparent 100%);
}

/* 右侧两个小卡 - 各占 5 列 2 行 */
.mm-mosaic-sm {
  grid-column: span 5;
  grid-row: span 2;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}
.mm-mosaic-sm img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}
.mm-mosaic-sm:hover img { transform: scale(1.05); }
.mm-mosaic-sm-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14,14,16,0.8) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
}

/* 中图卡 - 各占 6 列 3 行 */
.mm-mosaic-md {
  grid-column: span 6;
  grid-row: span 3;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}
.mm-mosaic-md img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}
.mm-mosaic-md:hover img { transform: scale(1.04); }
.mm-mosaic-md-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14,14,16,0.85) 0%, rgba(14,14,16,0.1) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
}

/* ===== 通用拼贴卡片标签 ===== */
.mm-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: 12px;
  width: fit-content;
}
.mm-tag--coral { background: var(--accent-coral-glow); color: var(--accent-coral); }
.mm-tag--cyan { background: var(--accent-cyan-glow); color: var(--accent-cyan); }
.mm-tag--lime { background: var(--accent-lime-glow); color: var(--accent-lime); }
.mm-tag--amber { background: var(--accent-amber-glow); color: var(--accent-amber); }
.mm-tag--violet { background: var(--accent-violet-glow); color: var(--accent-violet); }
.mm-tag--rose { background: var(--accent-rose-glow); color: var(--accent-rose); }

.mm-card-title {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.3px;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.mm-mosaic-hero .mm-card-title { font-size: clamp(24px, 3vw, 36px); }
.mm-mosaic-sm .mm-card-title { font-size: clamp(16px, 1.8vw, 22px); }
.mm-mosaic-md .mm-card-title { font-size: clamp(20px, 2.5vw, 28px); }

.mm-card-excerpt {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.mm-mosaic-hero .mm-card-excerpt { -webkit-line-clamp: 3; }

.mm-card-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.mm-card-meta svg { width: 12px; height: 12px; }

/* ===== Section 标题 ===== */
.mm-section {
  max-width: 1440px;
  margin: 0 auto;
  padding: 64px 32px 0;
}
.mm-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
}
.mm-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-coral);
  margin-bottom: 8px;
}
.mm-section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.5px;
}
.mm-section-more {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent-coral);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s var(--ease-out);
  flex-shrink: 0;
}
.mm-section-more:hover { gap: 12px; }
.mm-section-more svg { width: 14px; height: 14px; }

/* ===== 精选拼贴网格 ===== */
.mm-featured-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(60px, auto);
  gap: 16px;
}
.mm-featured-lg {
  grid-column: span 8;
  grid-row: span 3;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}
.mm-featured-lg img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}
.mm-featured-lg:hover img { transform: scale(1.03); }
.mm-featured-lg-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(14,14,16,0.85) 0%, transparent 50%);
  display: flex; flex-direction: column; justify-content: flex-end; padding: 28px;
}
.mm-featured-sm {
  grid-column: span 4;
  grid-row: span 3;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}
.mm-featured-sm img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}
.mm-featured-sm:hover img { transform: scale(1.04); }
.mm-featured-sm-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(14,14,16,0.85) 0%, transparent 50%);
  display: flex; flex-direction: column; justify-content: flex-end; padding: 24px;
}

/* ===== 数据条 ===== */
.mm-stats {
  max-width: 1440px;
  margin: 0 auto;
  padding: 48px 32px;
}
.mm-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.mm-stat-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: transform 0.3s var(--ease-out), border-color 0.3s;
  position: relative;
  overflow: hidden;
}
.mm-stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
}
.mm-stat-card--coral::before { background: var(--accent-coral); }
.mm-stat-card--cyan::before { background: var(--accent-cyan); }
.mm-stat-card--lime::before { background: var(--accent-lime); }
.mm-stat-card--amber::before { background: var(--accent-amber); }
.mm-stat-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255,255,255,0.1);
}
.mm-stat-number {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 8px;
}
.mm-stat-number--coral { color: var(--accent-coral); }
.mm-stat-number--cyan { color: var(--accent-cyan); }
.mm-stat-number--lime { color: var(--accent-lime); }
.mm-stat-number--amber { color: var(--accent-amber); }
.mm-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}
.mm-stat-sub {
  font-size: 11px;
  margin-top: 8px;
  font-weight: 600;
}
.mm-stat-sub--up { color: var(--accent-lime); }

/* ===== 引言区 ===== */
.mm-quote {
  max-width: 1440px;
  margin: 0 auto;
  padding: 64px 32px;
  text-align: center;
  position: relative;
}
.mm-quote::before {
  content: '\201C';
  font-family: var(--font-display);
  font-size: 160px;
  color: rgba(255,255,255,0.03);
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  line-height: 1;
  pointer-events: none;
}
.mm-quote-text {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 400;
  font-style: italic;
  line-height: 1.5;
  max-width: 800px;
  margin: 0 auto 24px;
  color: var(--text-primary);
}
.mm-quote-author {
  font-size: 13px;
  color: var(--accent-coral);
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
}

/* ===== 文章流 ===== */
.mm-stream {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 32px 64px;
}
.mm-stream-list {
  display: flex;
  flex-direction: column;
}
.mm-stream-item {
  display: grid;
  grid-template-columns: 80px 1fr 100px;
  gap: 24px;
  align-items: center;
  padding: 24px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
  transition: background 0.3s;
  cursor: pointer;
}
.mm-stream-item:first-child { border-top: 1px solid rgba(255,255,255,0.04); }
.mm-stream-item:hover { background: rgba(255,255,255,0.02); }
.mm-stream-date {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  font-weight: 500;
}
.mm-stream-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  transition: color 0.3s;
}
.mm-stream-item:hover .mm-stream-title { color: var(--accent-coral); }
.mm-stream-cat {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-align: right;
  padding: 3px 8px;
  border-radius: 3px;
  width: fit-content;
  margin-left: auto;
}
.mm-stream-cat--wc { color: var(--accent-cyan); background: var(--accent-cyan-glow); }
.mm-stream-cat--gen { color: var(--accent-amber); background: var(--accent-amber-glow); }
.mm-stream-cat--soc { color: var(--accent-lime); background: var(--accent-lime-glow); }
.mm-stream-cat--nhl { color: var(--accent-violet); background: var(--accent-violet-glow); }

/* ===== Footer ===== */
.mm-footer {
  background: var(--bg-card);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 64px 0 32px;
}
.mm-footer-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 32px;
}
.mm-footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}
.mm-footer-brand {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.mm-footer-brand-mark {
  width: 24px; height: 24px; border-radius: 5px;
  background: linear-gradient(135deg, var(--accent-coral), var(--accent-amber));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-body); font-size: 12px; font-weight: 800; color: #0e0e10;
}
.mm-footer-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 300px;
}
.mm-footer-heading {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.mm-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.mm-footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.3s;
}
.mm-footer-links a:hover { color: var(--accent-coral); }
.mm-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== 进入动画 ===== */
.mm-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.mm-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.mm-reveal-delay-1 { transition-delay: 0.1s; }
.mm-reveal-delay-2 { transition-delay: 0.2s; }
.mm-reveal-delay-3 { transition-delay: 0.3s; }

/* ===== 文章详情页 ===== */
.mm-article-hero {
  max-width: 1440px;
  margin: 0 auto;
  padding: 48px 32px 32px;
}
.mm-article-hero-inner {
  display: flex;
  align-items: flex-start;
  gap: 32px;
}
.mm-article-hero-text { flex: 1; }
.mm-article-hero-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 3px;
  margin-bottom: 20px;
}
.mm-article-hero-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.5vw, 52px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 20px;
  max-width: 720px;
}
.mm-article-hero-meta {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 20px;
}
.mm-article-hero-meta span { display: flex; align-items: center; gap: 6px; }
.mm-article-hero-meta svg { width: 14px; height: 14px; }

.mm-article-cover {
  max-width: 1100px;
  margin: 0 auto 48px;
  padding: 0 32px;
}
.mm-article-cover img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.mm-article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 32px 64px;
}
.mm-article-body p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.mm-article-body p:first-of-type::first-letter {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 700;
  float: left;
  line-height: 0.8;
  margin-right: 12px;
  margin-top: 6px;
  color: var(--accent-coral);
}
.mm-article-body h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  margin: 40px 0 16px;
  color: var(--text-primary);
}
.mm-article-body blockquote {
  border-left: 3px solid var(--accent-coral);
  padding: 16px 0 16px 24px;
  margin: 32px 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-style: italic;
  line-height: 1.6;
  color: var(--text-primary);
}

/* 详情页媒体区 */
.mm-article-media {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px 48px;
}
.mm-article-media-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 20px;
}
.mm-article-media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.mm-article-media-item {
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.mm-article-media-item img {
  width: 100%; height: 200px; object-fit: cover;
  transition: transform 0.5s var(--ease-out);
}
.mm-article-media-item:hover img { transform: scale(1.04); }

/* 详情页相关文章 */
.mm-article-related {
  max-width: 1440px;
  margin: 0 auto;
  padding: 48px 32px 64px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.mm-article-related-title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 32px;
}
.mm-article-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.mm-related-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s var(--ease-out), border-color 0.3s;
}
.mm-related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.1);
}
.mm-related-card-img {
  overflow: hidden;
}
.mm-related-card-img img {
  width: 100%; height: 180px; object-fit: cover;
  transition: transform 0.5s var(--ease-out);
}
.mm-related-card:hover .mm-related-card-img img { transform: scale(1.05); }
.mm-related-card-body {
  padding: 20px;
}
.mm-related-card-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.mm-related-card-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .mm-mosaic {
    grid-template-columns: repeat(6, 1fr);
  }
  .mm-mosaic-hero { grid-column: span 6; grid-row: span 3; }
  .mm-mosaic-sm { grid-column: span 3; grid-row: span 2; }
  .mm-mosaic-md { grid-column: span 3; grid-row: span 2; }
  .mm-featured-grid { grid-template-columns: repeat(6, 1fr); }
  .mm-featured-lg { grid-column: span 6; grid-row: span 2; }
  .mm-featured-sm { grid-column: span 3; grid-row: span 2; }
  .mm-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .mm-footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .mm-article-related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .mm-nav-inner { padding: 0 20px; }
  .mm-nav-links { display: none; }
  .mm-mobile-menu-btn { display: flex; }
  .mm-mosaic {
    grid-template-columns: 1fr;
    padding: 24px 16px 0;
    gap: 12px;
  }
  .mm-mosaic-hero,
  .mm-mosaic-sm,
  .mm-mosaic-md {
    grid-column: span 1;
    grid-row: span 2;
  }
  .mm-mosaic-hero img,
  .mm-mosaic-sm img,
  .mm-mosaic-md img { height: 240px; }
  .mm-section { padding: 48px 16px 0; }
  .mm-featured-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .mm-featured-lg,
  .mm-featured-sm {
    grid-column: span 1;
    grid-row: span 2;
  }
  .mm-featured-lg img,
  .mm-featured-sm img { height: 220px; }
  .mm-stats { padding: 32px 16px; }
  .mm-stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .mm-stat-card { padding: 20px 16px; }
  .mm-stat-number { font-size: 32px; }
  .mm-stream { padding: 0 16px 48px; }
  .mm-stream-item { grid-template-columns: 1fr; gap: 6px; padding: 16px; }
  .mm-stream-cat { text-align: left; margin-left: 0; }
  .mm-footer-top { grid-template-columns: 1fr; gap: 28px; }
  .mm-article-hero { padding: 32px 16px 24px; }
  .mm-article-hero-inner { flex-direction: column; gap: 0; }
  .mm-article-cover { padding: 0 16px; }
  .mm-article-cover img { height: 280px; }
  .mm-article-body { padding: 0 16px 48px; }
  .mm-article-media { padding: 0 16px 32px; }
  .mm-article-media-grid { grid-template-columns: 1fr 1fr; }
  .mm-article-related { padding: 32px 16px 48px; }
  .mm-article-related-grid { grid-template-columns: 1fr; }
  .mm-quote { padding: 48px 16px; }
  .mm-quote-text { font-size: 20px; }
}

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