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

/* ===== CSS 自定义属性 ===== */
:root {
  --red: #ff0000;
  --pink: #ff006e;
  --dark: #1a1a2e;
  --darker: #0d0d1a;
  --mid: #16213e;
  --surface: #0f0f2a;
  --surface2: #1e1e3f;
  --cyan: #00ffff;
  --text: #e8e8f0;
  --text-dim: #9999bb;
  --border: rgba(255,0,110,0.3);
  --glow-red: 0 0 8px #ff0000, 0 0 20px rgba(255,0,0,0.5);
  --glow-pink: 0 0 8px #ff006e, 0 0 20px rgba(255,0,110,0.5);
  --glow-cyan: 0 0 8px #00ffff, 0 0 20px rgba(0,255,255,0.4);
  --font: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
  --radius: 4px;
  --header-h: 56px;
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--darker);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--pink); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--red); text-shadow: var(--glow-red); }
ul, ol { list-style: none; }

/* ===== 公告滚动条 ===== */
.top-ticker {
  background: var(--red);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 0;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  z-index: 100;
}
.ticker-inner {
  display: inline-block;
  animation: ticker-scroll 30s linear infinite;
  padding-left: 100%;
}
@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(13,13,26,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--pink);
  border-radius: var(--radius);
  box-shadow: var(--glow-pink);
  text-decoration: none;
  flex-shrink: 0;
}
.brand-icon-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--pink);
  text-shadow: var(--glow-pink);
  line-height: 1;
}
.brand-logo-img { width: 32px; height: 32px; object-fit: contain; }

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
}
.nav-toggle:hover { border-color: var(--pink); box-shadow: var(--glow-pink); }
.burger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: background 0.2s;
  border-radius: 1px;
}
.nav-toggle:hover .burger-line { background: var(--pink); }

/* ===== 全屏遮罩导航 ===== */
.nav-fullscreen {
  position: fixed;
  inset: 0;
  background: rgba(10,10,25,0.98);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.nav-fullscreen.is-open {
  opacity: 1;
  pointer-events: all;
}
.nav-fullscreen::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(255,0,110,0.03) 2px,
    rgba(255,0,110,0.03) 4px
  );
  pointer-events: none;
}
.nav-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 22px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, color 0.2s;
}
.nav-close:hover { border-color: var(--red); color: var(--red); box-shadow: var(--glow-red); }
.nav-fullscreen-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
  max-height: 80vh;
  overflow-y: auto;
  padding: 20px;
}
.nav-full-link {
  display: block;
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text);
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: color 0.2s, border-color 0.2s, text-shadow 0.2s;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-full-link:hover {
  color: var(--pink);
  border-color: var(--pink);
  text-shadow: var(--glow-pink);
}

/* ===== 扫描线效果 ===== */
.hero-scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0,0,0,0.15) 3px,
    rgba(0,0,0,0.15) 4px
  );
  pointer-events: none;
  z-index: 1;
}

/* ===== 首页 Hero ===== */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 50%, #1a0a2e 100%);
  overflow: hidden;
  padding: 80px 20px 60px;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(255,0,110,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(255,0,0,0.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero-bg-text {
  position: absolute;
  right: -0.05em;
  top: 50%;
  transform: translateY(-50%);
  font-size: clamp(200px, 30vw, 400px);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255,0,110,0.15);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--pink);
  text-shadow: var(--glow-pink);
  margin-bottom: 16px;
}
.hero-h1 {
  font-size: clamp(36px, 7vw, 88px);
  font-weight: 700;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: #fff;
  text-shadow: 0 0 30px rgba(255,0,0,0.4), 0 0 60px rgba(255,0,110,0.2);
  margin-bottom: 20px;
}
.hero-sub {
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  background: var(--pink);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  box-shadow: var(--glow-pink);
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
  min-height: 48px;
}
.hero-cta:hover {
  background: var(--red);
  box-shadow: var(--glow-red);
  color: #fff;
  transform: translateY(-2px);
  text-shadow: none;
}

/* ===== 正文页面文章包裹 ===== */
.page-article {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}
.content-section { width: 100%; }
.content-prose {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
}
.content-prose h2 {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #fff;
  margin: 2em 0 0.7em;
  padding-left: 12px;
  border-left: 3px solid var(--pink);
}
.content-prose h3 {
  font-size: clamp(18px, 2.5vw, 22px);
  font-weight: 600;
  color: var(--pink);
  margin: 1.6em 0 0.5em;
}
.content-prose p { margin-bottom: 1.2em; }
.content-prose ul, .content-prose ol {
  padding-left: 1.5em;
  margin-bottom: 1.2em;
  list-style: disc;
}
.content-prose ol { list-style: decimal; }
.content-prose li { margin-bottom: 0.4em; }
.content-prose strong { color: #fff; font-weight: 700; }
.content-prose a { color: var(--pink); border-bottom: 1px solid rgba(255,0,110,0.4); }
.content-prose a:hover { color: var(--red); border-color: var(--red); text-shadow: none; }
.content-prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5em;
  font-size: 15px;
}
.content-prose th {
  background: var(--surface2);
  color: var(--pink);
  font-weight: 700;
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--border);
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.05em;
}
.content-prose td {
  padding: 9px 14px;
  border: 1px solid rgba(255,255,255,0.07);
  color: var(--text);
}
.content-prose tr:nth-child(even) td { background: rgba(255,255,255,0.03); }
.content-prose blockquote {
  border-left: 3px solid var(--red);
  padding: 12px 20px;
  margin: 1.5em 0;
  background: rgba(255,0,0,0.05);
  color: var(--text-dim);
  font-style: italic;
}
.content-prose code {
  font-family: var(--font-mono);
  background: var(--surface2);
  padding: 2px 6px;
  border-radius: 2px;
  font-size: 0.9em;
  color: var(--cyan);
}
.content-prose pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  overflow-x: auto;
  margin-bottom: 1.5em;
}
.content-prose pre code { background: none; padding: 0; }

/* ===== 章节标题 ===== */
.section-heading {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.heading-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--pink);
  background: rgba(255,0,110,0.1);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: var(--radius);
  letter-spacing: 0.1em;
}

/* ===== 首页频道卡片 ===== */
.channels-section { margin-top: 60px; }
.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.channel-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  text-decoration: none;
  color: var(--text);
}
.channel-card:hover {
  border-color: var(--pink);
  box-shadow: 0 0 20px rgba(255,0,110,0.2), 0 4px 20px rgba(0,0,0,0.4);
  transform: translateY(-3px);
  text-shadow: none;
  color: var(--text);
}
.card-img-wrap { aspect-ratio: 16/9; overflow: hidden; }
.card-img { width: 100%; height: 100%; object-fit: cover; }
.card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.card-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--pink);
  background: rgba(255,0,110,0.1);
  border: 1px solid rgba(255,0,110,0.3);
  padding: 2px 8px;
  border-radius: 2px;
  align-self: flex-start;
}
.card-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
}
.card-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
}
.card-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

/* ===== 首页文章列表 ===== */
.articles-section { margin-top: 48px; }
.article-list { display: flex; flex-direction: column; gap: 12px; }
.article-card {
  display: flex;
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 16px 20px;
  transition: border-color 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: var(--text);
}
.article-card:hover {
  border-color: var(--pink);
  box-shadow: 0 0 12px rgba(255,0,110,0.15);
  text-shadow: none;
  color: var(--text);
}
.article-card .card-body { padding: 0; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 12px; }
.article-card .card-title { flex: 1; font-size: 16px; }

/* ===== 频道页 Hero ===== */
.channel-hero {
  position: relative;
  min-height: 40vh;
  background: linear-gradient(135deg, var(--darker) 0%, var(--mid) 100%);
  display: flex;
  align-items: flex-end;
  padding: 60px 20px 40px;
  overflow: hidden;
}
.channel-hero-bg {
  position: absolute;
  right: -0.05em;
  bottom: -0.1em;
  font-size: clamp(100px, 18vw, 220px);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255,0,0,0.1);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.channel-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}
.channel-h1 {
  font-size: clamp(28px, 5vw, 56px);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 1.1;
  color: #fff;
  text-shadow: 0 0 20px rgba(255,0,110,0.3);
  margin-bottom: 12px;
}
.channel-desc {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--text-dim);
  max-width: 600px;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}
.breadcrumb a { color: var(--pink); }
.breadcrumb a:hover { color: var(--red); text-shadow: none; }
.breadcrumb span[aria-current] { color: var(--text); }

/* ===== 频道页子页列表 ===== */
.channel-article { max-width: 1000px; }
.sub-pages-section { margin-top: 48px; }
.sub-pages-dl { display: flex; flex-direction: column; gap: 16px; }
.sub-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.sub-item:hover { border-color: var(--red); box-shadow: 0 0 16px rgba(255,0,0,0.15); }
.sub-link {
  display: flex;
  gap: 0;
  text-decoration: none;
  color: var(--text);
}
.sub-img-wrap { width: 180px; flex-shrink: 0; overflow: hidden; }
.sub-img { width: 100%; height: 100%; object-fit: cover; }
.sub-info {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.sub-title { font-size: 17px; font-weight: 700; color: #fff; line-height: 1.4; }
.sub-desc { font-size: 14px; color: var(--text-dim); line-height: 1.6; }
.sub-date { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); }
.sub-excerpt {
  padding: 8px 20px 12px;
  font-size: 13px;
  color: var(--text-dim);
  border-top: 1px solid rgba(255,255,255,0.05);
}

/* ===== 文章页 Hero ===== */
.article-hero-bar {
  position: relative;
  background: linear-gradient(180deg, var(--darker) 0%, var(--dark) 100%);
  padding: 60px 20px 40px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.article-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
}
.article-h1 {
  font-size: clamp(26px, 4.5vw, 52px);
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
  text-shadow: 0 0 20px rgba(255,0,110,0.2);
  margin-bottom: 16px;
  text-transform: uppercase;
}
.article-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 13px;
}
.article-date { color: var(--pink); }
.article-date-mod { color: var(--text-dim); }
.article-hero-img-wrap {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 35%;
  overflow: hidden;
  opacity: 0.3;
}
.article-hero-img { width: 100%; height: 100%; object-fit: cover; }

/* ===== 文章布局 ===== */
.article-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
  align-items: start;
}
.main-article { padding: 40px 0 60px; max-width: none; }
.related-aside {
  padding-top: 40px;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}
.aside-heading {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--pink);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.related-dl { display: flex; flex-direction: column; gap: 12px; }
.related-dl dt a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}
.related-dl dt a:hover { color: var(--pink); text-shadow: none; }
.related-dl dd {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.5;
  padding-left: 0;
  margin-top: 2px;
}

/* ===== About 页 ===== */
.about-hero {
  position: relative;
  min-height: 45vh;
  background: linear-gradient(135deg, var(--darker) 0%, #1a0a2e 100%);
  display: flex;
  align-items: center;
  padding: 80px 20px 60px;
  overflow: hidden;
}
.about-hero-num {
  position: absolute;
  left: -0.05em;
  top: 50%;
  transform: translateY(-50%);
  font-size: clamp(120px, 20vw, 280px);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255,0,110,0.1);
  user-select: none;
  pointer-events: none;
}
.about-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}
.about-h1 {
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 700;
  text-transform: uppercase;
  color: #fff;
  text-shadow: 0 0 20px rgba(255,0,110,0.3);
  margin-bottom: 16px;
}
.about-desc { font-size: 17px; color: var(--text-dim); line-height: 1.7; }
.about-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 40px;
  align-items: start;
}
.about-article { padding: 40px 0 60px; max-width: none; }
.about-sidebar { padding-top: 40px; }
.sidebar-block { margin-bottom: 32px; }
.sidebar-heading {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--pink);
  margin-bottom: 12px;
  font-family: var(--font-mono);
}
.sidebar-nav-dl { display: flex; flex-direction: column; gap: 8px; }
.sidebar-nav-dl dt a {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.5;
  display: block;
  padding: 4px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color 0.2s;
}
.sidebar-nav-dl dt a:hover { color: var(--pink); text-shadow: none; }

/* ===== Privacy 页 ===== */
.privacy-hero {
  position: relative;
  background: var(--darker);
  border-bottom: 1px solid var(--border);
  padding: 60px 20px 40px;
  overflow: hidden;
}
.privacy-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
}
.privacy-h1 {
  font-size: clamp(26px, 4vw, 48px);
  font-weight: 700;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 12px;
}
.privacy-desc { font-size: 16px; color: var(--text-dim); }
.privacy-article { max-width: 900px; }
.privacy-content-section { max-width: 720px; }
.privacy-links-section { margin-top: 48px; }
.privacy-links-dl { display: flex; flex-direction: column; gap: 12px; }
.privacy-links-dl dt a { font-size: 16px; font-weight: 600; color: var(--pink); }
.privacy-links-dl dt a:hover { color: var(--red); text-shadow: none; }
.privacy-links-dl dd { font-size: 14px; color: var(--text-dim); padding-top: 2px; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--darker);
  border-top: 1px solid var(--border);
  padding: 40px 20px 24px;
}
.footer-subscribe {
  max-width: 600px;
  margin: 0 auto 32px;
  text-align: center;
  padding: 24px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.footer-sub-text { font-size: 16px; color: var(--text-dim); }
.footer-nav { max-width: 1200px; margin: 0 auto 24px; }
.footer-nav-dl {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: center;
}
.footer-nav-dl dt a {
  font-size: 13px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
  padding: 8px 4px;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  transition: color 0.2s;
}
.footer-nav-dl dt a:hover { color: var(--pink); text-shadow: none; }
.footer-copy {
  text-align: center;
  font-size: 13px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
}

/* ===== Scroll Reveal 动效 ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .ticker-inner { animation: none; }
  .nav-fullscreen { transition: none; }
}

/* ===== 移动端断点 ===== */
@media (max-width: 768px) {
  .hero { min-height: 70vh; padding: 60px 16px 48px; }
  .hero-bg-text { font-size: 160px; }
  .article-layout { grid-template-columns: 1fr; }
  .related-aside { position: static; padding-top: 0; }
  .about-layout { grid-template-columns: 1fr; }
  .about-sidebar { padding-top: 0; }
  .channel-grid { grid-template-columns: 1fr 1fr; }
  .sub-img-wrap { width: 120px; }
  .article-hero-img-wrap { display: none; }
  .footer-nav-dl { gap: 4px 12px; }
  .footer-subscribe { padding: 16px; }
}
@media (max-width: 480px) {
  .channel-grid { grid-template-columns: 1fr; }
  .sub-link { flex-direction: column; }
  .sub-img-wrap { width: 100%; aspect-ratio: 16/9; }
  .hero-h1 { font-size: 32px; }
  .channel-h1 { font-size: 26px; }
  .article-h1 { font-size: 24px; }
  .nav-fullscreen-list { padding: 10px; }
  .footer-nav-dl { flex-direction: column; align-items: center; }
}

/* ===== 像素网格装饰（CRT 卡片质感）===== */
.channel-card::before,
.sub-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,0,110,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,0,110,0.04) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
  border-radius: var(--radius);
}
.channel-card, .sub-item { position: relative; }

/* ===== 通用实用类 ===== */
.site-wrap { min-height: 100vh; display: flex; flex-direction: column; }
.site-wrap > .hero,
.site-wrap > .channel-hero,
.site-wrap > .article-hero-bar,
.site-wrap > .about-hero,
.site-wrap > .privacy-hero { flex-shrink: 0; }
.site-wrap > .page-article,
.site-wrap > .article-layout,
.site-wrap > .about-layout { flex: 1; }
.site-footer { flex-shrink: 0; }