@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,300;0,400;0,500;0,700;1,400&display=swap');

/* ============================================================
   CSS 变量 & 重置
   ============================================================ */
:root {
  --c-primary: #ff0080;
  --c-secondary: #ff00ff;
  --c-dark: #26171f;
  --c-dark-80: rgba(38,23,31,0.8);
  --c-dark-60: rgba(38,23,31,0.6);
  --c-dark-40: rgba(38,23,31,0.4);
  --c-glass-bg: rgba(38,23,31,0.45);
  --c-glass-border: rgba(255,0,128,0.25);
  --c-text: #f5e6ef;
  --c-text-muted: rgba(245,230,239,0.65);
  --c-surface: rgba(60,20,40,0.55);
  --header-h: 68px;
  --radius: 0px;
  --max-w: 1200px;
  --prose-w: 780px;
  --font: 'Roboto', system-ui, -apple-system, sans-serif;
  --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
}

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

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

body {
  font-family: var(--font);
  background: var(--c-dark);
  color: var(--c-text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ============================================================
   Aurora 背景
   ============================================================ */
.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.aurora-layer {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  mix-blend-mode: screen;
}

.aurora-layer.a1 {
  width: 80vw;
  height: 70vh;
  top: -20vh;
  left: -20vw;
  background: radial-gradient(ellipse at 40% 40%, #ff0080 0%, #ff00ff 50%, transparent 80%);
  animation: aurora-drift1 18s ease-in-out infinite alternate;
}

.aurora-layer.a2 {
  width: 70vw;
  height: 60vh;
  bottom: -10vh;
  right: -15vw;
  background: radial-gradient(ellipse at 60% 60%, #ff00ff 0%, #ff0080 45%, transparent 80%);
  animation: aurora-drift2 22s ease-in-out infinite alternate;
}

.aurora-layer.a3 {
  width: 55vw;
  height: 50vh;
  top: 30vh;
  left: 20vw;
  background: conic-gradient(from 180deg at 50% 50%, #ff0080, #ff00ff, #26171f, #ff0080);
  opacity: 0.2;
  animation: aurora-spin 35s linear infinite;
}

@keyframes aurora-drift1 {
  0% { transform: translate(0,0) scale(1); }
  100% { transform: translate(8vw, 6vh) scale(1.15); filter: blur(90px) hue-rotate(30deg); }
}
@keyframes aurora-drift2 {
  0% { transform: translate(0,0) scale(1); }
  100% { transform: translate(-6vw,-8vh) scale(1.1); filter: blur(100px) hue-rotate(-20deg); }
}
@keyframes aurora-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .aurora-layer { animation: none !important; }
}

/* ============================================================
   全局层级
   ============================================================ */
header, main, footer, .fullscreen-menu {
  position: relative;
  z-index: 1;
}

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 100;
  background: rgba(38,23,31,0.72);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--c-glass-border);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
}

.header-left { display: flex; align-items: center; }
.header-brand { display: flex; justify-content: center; align-items: center; }
.header-right { display: flex; justify-content: flex-end; align-items: center; }

.brand-link {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo-img { height: 36px; width: auto; }

/* 汉堡 */
.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px 12px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.ham-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.hamburger[aria-expanded="true"] .ham-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .ham-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger[aria-expanded="true"] .ham-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* CTA 按钮 */
.cta-btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  color: #fff;
  font-weight: 500;
  font-size: 0.92rem;
  text-decoration: none;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  min-height: 44px;
  transition: var(--transition);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.cta-btn:hover {
  filter: brightness(1.15) saturate(1.2);
  transform: translateY(-1px);
}

.cta-btn.cta-lg { padding: 14px 28px; font-size: 1rem; }

.cta-btn.cta-outline {
  background: transparent;
  border: 1.5px solid var(--c-primary);
  color: var(--c-primary);
}
.cta-btn.cta-outline:hover {
  background: rgba(255,0,128,0.12);
  filter: none;
}

/* ============================================================
   全屏菜单
   ============================================================ */
.fullscreen-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(38,23,31,0.97);
  backdrop-filter: blur(24px) saturate(200%);
  -webkit-backdrop-filter: blur(24px) saturate(200%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.fullscreen-menu.is-open {
  opacity: 1;
  pointer-events: all;
}

.menu-close {
  position: absolute;
  top: 20px; right: 24px;
  background: none;
  border: none;
  color: var(--c-text);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 10px 14px;
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition);
}
.menu-close:hover { color: var(--c-primary); }

.menu-nav ol {
  list-style: none;
  padding: 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.menu-nav ol li a {
  display: block;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 500;
  color: var(--c-text);
  text-decoration: none;
  padding: 12px 32px;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
}

.menu-nav ol li a::after {
  content: '';
  position: absolute;
  bottom: 6px; left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 40%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  transition: transform var(--transition);
}

.menu-nav ol li a:hover {
  color: var(--c-primary);
}
.menu-nav ol li a:hover::after { transform: translateX(-50%) scaleX(1); }

/* ============================================================
   首页 Hero
   ============================================================ */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: var(--header-h);
  position: relative;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-media-empty {
  background: linear-gradient(160deg, #3a0a24 0%, #26171f 40%, #1a0a12 100%);
}

.hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(38,23,31,0.96) 0%,
    rgba(38,23,31,0.7) 40%,
    rgba(38,23,31,0.2) 80%,
    transparent 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px 80px;
  width: 100%;
}

.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--c-primary);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero-content h1 {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, var(--c-text) 50%, rgba(255,0,128,0.8) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  max-width: 800px;
}

.hero-lead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--c-text-muted);
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.7;
}

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

/* ============================================================
   通用 - 页面骨架
   ============================================================ */
body {
  padding-top: 0;
}

main {
  padding-top: var(--header-h);
  min-height: calc(100vh - var(--header-h));
}

.home-page main,
.home-page .hero-section {
  padding-top: 0;
}

/* ============================================================
   内容区布局（侧边栏在左）
   ============================================================ */
.content-area {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 36px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.sidebar-inner {
  background: var(--c-glass-bg);
  border: 1px solid var(--c-glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 24px 20px;
}

.sidebar-inner h3 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-primary);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.sidebar-inner hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 16px;
}

.sidebar-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-nav li a {
  display: block;
  font-size: 0.9rem;
  color: var(--c-text-muted);
  text-decoration: none;
  padding: 7px 10px;
  min-height: 40px;
  display: flex;
  align-items: center;
  border-left: 2px solid transparent;
  transition: var(--transition);
}

.sidebar-nav li a:hover,
.sidebar-nav li a[aria-current="page"] {
  color: var(--c-primary);
  border-left-color: var(--c-primary);
  background: rgba(255,0,128,0.08);
}

.sidebar-links { margin-top: 16px; }
.sidebar-link-item {
  display: block;
  font-size: 0.88rem;
  color: var(--c-text-muted);
  text-decoration: none;
  padding: 8px 10px;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: var(--transition);
}
.sidebar-link-item:hover { color: var(--c-primary); }

.sidebar-back { margin-top: 16px; }
.back-link {
  display: flex;
  align-items: center;
  font-size: 0.88rem;
  color: var(--c-text-muted);
  text-decoration: none;
  padding: 8px 10px;
  min-height: 40px;
  gap: 6px;
  transition: var(--transition);
}
.back-link:hover { color: var(--c-primary); }

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

/* ============================================================
   玻璃卡片
   ============================================================ */
.glass-card {
  background: var(--c-glass-bg);
  border: 1px solid var(--c-glass-border);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-radius: var(--radius);
  transition: var(--transition);
}

.glass-card:hover {
  border-color: rgba(255,0,128,0.5);
  box-shadow: 0 0 32px rgba(255,0,128,0.15);
}

/* ============================================================
   正文 prose
   ============================================================ */
.prose {
  padding: 36px 40px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text);
}

.prose h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 32px 0 8px;
  color: var(--c-text);
}

.prose h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 24px 0 8px;
  color: var(--c-text);
}

.prose p { margin-bottom: 16px; }

.prose ul, .prose ol {
  padding-left: 24px;
  margin-bottom: 16px;
}
.prose li { margin-bottom: 6px; }

.prose a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.prose a:hover { color: var(--c-secondary); }

.prose hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin: 28px 0;
}

.prose strong { color: var(--c-text); font-weight: 700; }

.prose blockquote {
  border-left: 3px solid var(--c-primary);
  padding: 12px 20px;
  margin: 20px 0;
  background: rgba(255,0,128,0.06);
  color: var(--c-text-muted);
  font-style: italic;
}

/* ============================================================
   时间 / 日期
   ============================================================ */
time.pub-date, time.mod-date, time.art-date {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  letter-spacing: 0.04em;
}

time.pub-date { margin-right: 16px; }

/* ============================================================
   小标题 / eyebrow
   ============================================================ */
.section-label, .channel-eyebrow, .about-eyebrow, .privacy-eyebrow, .tag-badge {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--c-primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}

/* ============================================================
   首页各节
   ============================================================ */
.home-content-section {
  max-width: var(--prose-w);
  margin: 56px auto;
  padding: 0 24px;
}

.home-content-section h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.home-prose {
  padding: 32px 36px;
  font-size: 1rem;
  line-height: 1.8;
}

.channels-section, .articles-section {
  max-width: var(--max-w);
  margin: 0 auto 64px;
  padding: 0 24px;
}

.channels-section h2, .articles-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.channels-section hr, .articles-section hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 28px;
}

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

.channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 24px;
  text-decoration: none;
  color: var(--c-text);
  position: relative;
  overflow: hidden;
}

.channel-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.channel-card:hover::before { transform: scaleX(1); }

.channel-card strong {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-text);
}

.card-desc {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.5;
}

.card-arrow {
  font-size: 1.1rem;
  color: var(--c-primary);
  margin-top: auto;
  transition: transform var(--transition);
}
.channel-card:hover .card-arrow { transform: translateX(6px); }

.articles-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.article-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 28px;
}

.article-row-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.article-row-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-text);
  text-decoration: none;
  transition: color var(--transition);
}
.article-row-title:hover { color: var(--c-primary); }

.article-row-desc {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.5;
}

.art-read-more {
  flex-shrink: 0;
  font-size: 0.88rem;
  color: var(--c-primary);
  text-decoration: none;
  font-weight: 500;
  white-space: nowrap;
  transition: color var(--transition);
}
.art-read-more:hover { color: var(--c-secondary); }

/* ============================================================
   频道页 Hero
   ============================================================ */
.channel-hero {
  min-height: 42vh;
  padding: calc(var(--header-h) + 60px) 24px 60px;
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
}

.channel-hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0.35;
}
.channel-hero-media img { width: 100%; height: 100%; object-fit: cover; }

.channel-hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.channel-hero-content h1 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  margin: 12px 0 16px;
  line-height: 1.25;
}

.channel-lead {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  line-height: 1.7;
}

/* ============================================================
   子文章卡片（频道页）
   ============================================================ */
.sub-articles { margin-top: 48px; }
.sub-articles h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.sub-articles hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 24px;
}
.sub-articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.sub-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px;
  text-decoration: none;
  color: var(--c-text);
}
.sub-card strong {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--c-text);
}
.sub-card-desc {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  line-height: 1.5;
}
.sub-card time {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  margin-top: auto;
}

/* ============================================================
   文章页 Hero
   ============================================================ */
.article-hero {
  padding: calc(var(--header-h) + 48px) 24px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
}

.article-hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0.25;
}
.article-hero-media img { width: 100%; height: 100%; object-fit: cover; }

.article-hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.article-hero-content h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin: 12px 0 16px;
  line-height: 1.3;
}

.article-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* 面包屑 */
.breadcrumb ol {
  list-style: none;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.83rem;
}
.breadcrumb li { display: flex; align-items: center; color: var(--c-text-muted); }
.breadcrumb li:not(:last-child)::after { content: '›'; margin-left: 8px; }
.breadcrumb li a { color: var(--c-text-muted); text-decoration: none; }
.breadcrumb li a:hover { color: var(--c-primary); }
.breadcrumb li[aria-current="page"] { color: var(--c-primary); }

/* ============================================================
   相关文章（文章页）
   ============================================================ */
.related-section { margin-top: 48px; }
.related-section h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.related-section hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 20px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.related-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  text-decoration: none;
  color: var(--c-text);
}
.related-card strong {
  font-size: 0.95rem;
  font-weight: 600;
}
.related-card span {
  font-size: 0.83rem;
  color: var(--c-text-muted);
  line-height: 1.5;
}

/* ============================================================
   标签页
   ============================================================ */
.tag-hero {
  padding: calc(var(--header-h) + 60px) 24px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
}
.tag-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  margin: 12px 0 16px;
}
.tag-lead {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  max-width: 600px;
  line-height: 1.7;
}

.tag-items { margin-top: 40px; }
.tag-items h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.tag-items hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 20px;
}
.tag-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.tag-item-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px;
  text-decoration: none;
  color: var(--c-text);
}
.tag-item-card strong {
  font-size: 0.98rem;
  font-weight: 600;
}
.tag-item-card span {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  line-height: 1.5;
}
.tag-item-card time {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  margin-top: auto;
}

/* ============================================================
   关于页
   ============================================================ */
.about-hero {
  padding: calc(var(--header-h) + 80px) 24px 64px;
  position: relative;
  overflow: hidden;
}
.about-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  max-width: 720px;
}
.about-hero-inner h1 {
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 700;
  margin: 14px 0 20px;
  line-height: 1.2;
  background: linear-gradient(135deg, #fff 0%, var(--c-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-lead {
  font-size: 1.1rem;
  color: var(--c-text-muted);
  line-height: 1.7;
  max-width: 560px;
}

.about-cards { margin-top: 48px; }
.about-cards h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.about-cards hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 24px;
}
.about-promise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.promise-card {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.promise-num {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.promise-card strong { font-size: 1rem; font-weight: 700; }
.promise-card p { font-size: 0.88rem; color: var(--c-text-muted); line-height: 1.6; }

.about-nav-block { margin-top: 40px; }
.about-nav-block h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.about-nav-block hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 20px;
}
.about-channel-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}
.channel-link-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  text-decoration: none;
  color: var(--c-text);
}
.channel-link-block strong { font-size: 0.98rem; font-weight: 700; }
.channel-link-block span { font-size: 0.85rem; color: var(--c-text-muted); line-height: 1.5; }

/* ============================================================
   隐私页
   ============================================================ */
.privacy-hero {
  padding: calc(var(--header-h) + 60px) 24px 48px;
}
.privacy-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  max-width: 720px;
}
.privacy-hero-inner h1 {
  font-size: clamp(1.5rem, 4vw, 2.6rem);
  font-weight: 700;
  margin: 12px 0 16px;
}
.privacy-hero-inner p {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  line-height: 1.7;
  margin-top: 12px;
}
.privacy-hero-inner time {
  display: block;
  margin-bottom: 8px;
}

.privacy-prose { padding: 36px 40px; }

.privacy-back { margin-top: 40px; }
.privacy-back h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.privacy-back hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 20px;
}
.privacy-nav-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}
.privacy-nav-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  text-decoration: none;
  color: var(--c-text);
}
.privacy-nav-card strong { font-size: 0.98rem; font-weight: 700; }
.privacy-nav-card span { font-size: 0.85rem; color: var(--c-text-muted); line-height: 1.5; }

/* ============================================================
   简洁页面 Hero（default layout）
   ============================================================ */
.page-hero-sm {
  padding: calc(var(--header-h) + 48px) 24px 32px;
  max-width: var(--max-w);
  margin: 0 auto;
}
.page-hero-sm h1 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.3;
}

/* ============================================================
   h2 + hr 装饰（通用）
   ============================================================ */
h2 + hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 20px;
}
h3 + hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin-bottom: 16px;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: rgba(20,8,14,0.92);
  border-top: 1px solid var(--c-glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  margin-top: 80px;
  position: relative;
  z-index: 1;
}

.footer-top {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
}

.footer-col h3 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-primary);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-col p {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-col nav ol {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col nav ol li a {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  min-height: 32px;
  transition: color var(--transition);
}
.footer-col nav ol li a:hover { color: var(--c-primary); }

.footer-contact .cta-btn {
  margin-top: 4px;
  font-size: 0.88rem;
  padding: 9px 18px;
}

.footer-bottom {
  border-top: 1px solid var(--c-glass-border);
}

.footer-bottom-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom-inner nav ol {
  list-style: none;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.footer-bottom-inner nav ol li a {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  text-decoration: none;
  padding: 8px 12px;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}
.footer-bottom-inner nav ol li a:hover { color: var(--c-primary); }

.copyright {
  font-size: 0.82rem;
  color: var(--c-text-muted);
}

/* ============================================================
   Scroll Reveal 动效
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .content-area {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }
}

@media (max-width: 720px) {
  .content-area {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    order: 2;
  }
  .main-content { order: 1; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .about-promise-grid,
  .about-channel-links,
  .privacy-nav-links {
    grid-template-columns: 1fr;
  }

  .channels-grid, .sub-articles-grid, .related-grid, .tag-grid {
    grid-template-columns: 1fr;
  }

  .article-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-content {
    padding: 40px 20px 60px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .prose { padding: 24px 20px; }
  .privacy-prose { padding: 24px 20px; }
}

@media (max-width: 420px) {
  .logo-text { font-size: 0.9rem; }
  .cta-btn { padding: 10px 14px; font-size: 0.85rem; }
  .header-inner { padding: 0 16px; }
  .hero-content h1 { font-size: 1.6rem; }
}

/* ============================================================
   Hover 微交互
   ============================================================ */
.sub-card:hover strong,
.tag-item-card:hover strong,
.related-card:hover strong,
.channel-link-block:hover strong,
.privacy-nav-card:hover strong {
  color: var(--c-primary);
  transition: color var(--transition);
}

@media (prefers-reduced-motion: no-preference) {
  .sub-card, .tag-item-card, .related-card, .channel-link-block, .privacy-nav-card {
    transition: border-color var(--transition), box-shadow var(--transition), transform 0.2s ease;
  }
  .sub-card:hover, .tag-item-card:hover, .related-card:hover, .channel-link-block:hover, .privacy-nav-card:hover {
    transform: translateY(-2px);
  }
}