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

/* =====================
   CSS 变量 & 重置
   ===================== */
:root {
  --red: #ff0000;
  --pink: #ff1493;
  --dark: #261717;
  --dark2: #1a0e0e;
  --dark3: #2e1a1a;
  --dark4: #3d1f1f;
  --text: #f5e6e6;
  --text-muted: #c9a0a0;
  --text-dim: #9a6868;
  --border: rgba(255, 20, 147, 0.25);
  --border-bright: rgba(255, 0, 0, 0.45);
  --card-bg: rgba(38, 23, 23, 0.75);
  --glow-red: rgba(255, 0, 0, 0.35);
  --glow-pink: rgba(255, 20, 147, 0.35);
  --radius-card: 28px;
  --radius-sm: 12px;
  --radius-btn: 50px;
  --font-body: 'Cormorant Infant', 'Noto Serif SC', Georgia, serif;
  --font-script: 'Great Vibes', cursive;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-w: 1200px;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--dark2);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
}

body {
  background: var(--dark2);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* 全局极光背景网格 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 30%, rgba(255, 0, 0, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 70%, rgba(255, 20, 147, 0.1) 0%, transparent 60%),
    radial-gradient(ellipse 100% 50% at 50% 100%, rgba(38, 23, 23, 0.9) 0%, transparent 70%);
  background-color: var(--dark2);
  animation: aurora-shift 10s ease-in-out infinite alternate;
  z-index: 0;
  pointer-events: none;
}

@keyframes aurora-shift {
  0% {
    background:
      radial-gradient(ellipse 80% 60% at 20% 30%, rgba(255, 0, 0, 0.12) 0%, transparent 60%),
      radial-gradient(ellipse 60% 80% at 80% 70%, rgba(255, 20, 147, 0.1) 0%, transparent 60%),
      radial-gradient(ellipse 100% 50% at 50% 100%, rgba(38, 23, 23, 0.9) 0%, transparent 70%);
    background-color: var(--dark2);
  }
  50% {
    background:
      radial-gradient(ellipse 70% 70% at 40% 20%, rgba(255, 20, 147, 0.14) 0%, transparent 60%),
      radial-gradient(ellipse 80% 60% at 70% 80%, rgba(255, 0, 0, 0.1) 0%, transparent 60%),
      radial-gradient(ellipse 100% 50% at 50% 100%, rgba(38, 23, 23, 0.9) 0%, transparent 70%);
    background-color: var(--dark2);
  }
  100% {
    background:
      radial-gradient(ellipse 90% 50% at 60% 40%, rgba(255, 0, 0, 0.1) 0%, transparent 60%),
      radial-gradient(ellipse 50% 90% at 20% 80%, rgba(255, 20, 147, 0.13) 0%, transparent 60%),
      radial-gradient(ellipse 100% 50% at 50% 100%, rgba(38, 23, 23, 0.9) 0%, transparent 70%);
    background-color: var(--dark2);
  }
}

@media (prefers-reduced-motion: reduce) {
  body::before { animation: none; }
}

/* =====================
   Aurora 装饰 blob
   ===================== */
.aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.45;
  animation: blob-morph 9s ease-in-out infinite alternate;
}

.blob-1 { width: 400px; height: 300px; background: radial-gradient(circle, var(--red), var(--pink)); top: -50px; right: -80px; }
.blob-2 { width: 350px; height: 350px; background: radial-gradient(circle, var(--pink), var(--red)); bottom: -60px; left: -60px; }
.blob-3 { width: 300px; height: 250px; background: radial-gradient(circle, var(--red), transparent); top: 0; right: 0; }
.blob-4 { width: 280px; height: 280px; background: radial-gradient(circle, var(--pink), transparent); bottom: 0; left: 20px; }
.blob-5 { width: 200px; height: 200px; background: radial-gradient(circle, var(--red), var(--pink)); top: 50%; right: 10%; }
.blob-guide { width: 100%; height: 100%; background: conic-gradient(from 0deg, var(--red), var(--pink), var(--dark3), var(--red)); }
.blob-faq { width: 500px; height: 400px; background: radial-gradient(ellipse, var(--pink), var(--red), transparent); top: -100px; right: -100px; }
.blob-changelog { width: 450px; height: 350px; background: radial-gradient(ellipse, var(--red), var(--pink), transparent); top: -80px; left: -80px; }
.blob-about { width: 500px; height: 400px; background: radial-gradient(ellipse, var(--pink), var(--red), transparent); top: -120px; right: -60px; }
.blob-privacy { width: 400px; height: 350px; background: radial-gradient(ellipse, var(--red), var(--pink), transparent); top: -80px; left: -60px; }

@keyframes blob-morph {
  0% { transform: scale(1) rotate(0deg); opacity: 0.4; }
  50% { transform: scale(1.15) rotate(10deg); opacity: 0.55; }
  100% { transform: scale(0.9) rotate(-8deg); opacity: 0.38; }
}

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

/* =====================
   公告条
   ===================== */
.announce-bar {
  position: relative;
  z-index: 20;
  background: linear-gradient(90deg, var(--red) 0%, var(--pink) 50%, var(--red) 100%);
  background-size: 200% 100%;
  animation: slide-gradient 8s linear infinite;
  text-align: center;
  padding: 8px 16px;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: #fff;
  font-family: var(--font-body);
}

@keyframes slide-gradient {
  0% { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}

@media (prefers-reduced-motion: reduce) {
  .announce-bar { animation: none; background: linear-gradient(90deg, var(--red), var(--pink)); }
}

.announce-bar p { margin: 0; }

/* =====================
   顶部导航
   ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 14, 14, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}

.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;
  gap: 16px;
}

/* 品牌居中 */
.brand-center { display: flex; justify-content: center; }
.brand-link { text-decoration: none; }
.brand-script {
  font-family: var(--font-script);
  font-size: 2rem;
  color: var(--text);
  text-shadow: 0 0 20px var(--glow-red), 0 0 40px var(--glow-pink);
  white-space: nowrap;
  display: block;
  line-height: 1.2;
}
.brand-script:hover { text-shadow: 0 0 30px var(--red), 0 0 60px var(--pink); }

/* 左侧 details 导航 */
.nav-left { display: flex; align-items: center; }
.nav-details { position: relative; }
.nav-toggle {
  list-style: none;
  cursor: pointer;
  padding: 10px 20px;
  min-height: 44px;
  background: rgba(255, 0, 0, 0.1);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  user-select: none;
}
.nav-toggle::-webkit-details-marker { display: none; }
.nav-toggle::marker { display: none; }
.nav-toggle:hover { background: rgba(255, 0, 0, 0.22); border-color: var(--border-bright); }

.nav-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  background: rgba(26, 14, 14, 0.97);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 0;
  min-width: 260px;
  list-style: none;
  box-shadow: 0 8px 32px rgba(255, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  z-index: 200;
  animation: dropdown-in 0.2s ease;
}

@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.nav-dropdown li { list-style: none; }
.nav-dropdown li a {
  display: block;
  padding: 11px 20px;
  min-height: 44px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-family: var(--font-body);
  transition: var(--transition);
  line-height: 1.3;
  display: flex;
  align-items: center;
}
.nav-dropdown li a:hover { color: var(--text); background: rgba(255, 0, 0, 0.1); padding-left: 28px; }
.nav-dropdown li a[aria-current="page"] { color: var(--red); }

/* 右侧按钮 */
.nav-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* 粘性锚点条 */
.sticky-anchor-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 90;
  background: rgba(38, 23, 23, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.anchor-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.anchor-inner::-webkit-scrollbar { display: none; }
.anchor-link {
  display: block;
  padding: 12px 18px;
  min-height: 44px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.82rem;
  font-family: var(--font-body);
  white-space: nowrap;
  transition: var(--transition);
  border-bottom: 2px solid transparent;
  display: flex;
  align-items: center;
}
.anchor-link:hover { color: var(--text-muted); border-bottom-color: var(--border); }
.anchor-link.active { color: var(--red); border-bottom-color: var(--red); }

/* =====================
   按钮
   ===================== */
.btn-cta, .btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  min-height: 44px;
  background: linear-gradient(135deg, var(--red), var(--pink));
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  transition: var(--transition);
  box-shadow: 0 4px 20px var(--glow-red);
  border: none;
  cursor: pointer;
}
.btn-cta:hover, .btn-primary:hover {
  box-shadow: 0 6px 30px var(--glow-pink);
  transform: translateY(-1px);
}

.btn-ghost, .btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  min-height: 44px;
  background: transparent;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-size: 0.88rem;
  transition: var(--transition);
  border: 1px solid var(--border);
  cursor: pointer;
}
.btn-ghost:hover, .btn-outline:hover {
  color: var(--text);
  border-color: var(--border-bright);
  background: rgba(255, 0, 0, 0.08);
}

/* =====================
   首页布局
   ===================== */

/* Hero 区 */
.hero-section {
  position: relative;
  min-height: 70vh;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: 1fr auto;
  gap: 0;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px 40px;
  overflow: hidden;
}

.hero-deco-text {
  position: absolute;
  bottom: -40px;
  right: -20px;
  font-family: var(--font-script);
  font-size: clamp(120px, 20vw, 280px);
  color: rgba(255, 0, 0, 0.04);
  white-space: nowrap;
  pointer-events: none;
  line-height: 1;
  z-index: 0;
  user-select: none;
}

.hero-content {
  grid-column: 1;
  grid-row: 1;
  display: flex;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-text {
  flex: 1;
  text-align: right;
  max-width: 520px;
}

.hero-eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--pink);
  text-transform: uppercase;
  margin-bottom: 12px;
  font-family: var(--font-body);
}

.hero-text h1 {
  font-family: var(--font-body);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 20px;
  text-shadow: 0 2px 20px var(--glow-red);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.hero-meta {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.hero-figure {
  flex: 0 0 380px;
  width: 380px;
  height: 420px;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}

.hero-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-figure--placeholder {
  background: linear-gradient(135deg, var(--dark3), var(--dark4));
}

.hero-orb {
  width: 100%;
  height: 100%;
  background: conic-gradient(from 0deg at 50% 50%, var(--red), var(--pink), var(--dark3), var(--red));
  background-size: 200% 200%;
  animation: orb-spin 10s linear infinite;
  filter: blur(30px);
  opacity: 0.7;
}

@keyframes orb-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-orb { animation: none; }
}

.hero-aside {
  grid-column: 2;
  grid-row: 1 / 3;
  width: 200px;
  padding: 24px 0 24px 24px;
  position: relative;
  z-index: 2;
  align-self: start;
  margin-top: 40px;
}

/* 正文区（首页） */
.content-section {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
  align-items: start;
}

.content-deco {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
  margin: 0;
}

.content-body, .content-aside { position: relative; z-index: 1; }

/* 指南卡片网格 */
.guides-section {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.guides-inner { position: relative; z-index: 1; }

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  list-style: none;
  margin-top: 32px;
}

/* =====================
   卡片
   ===================== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border-bottom: 3px solid transparent;
}

.card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), var(--pink));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.card:hover { border-color: var(--border-bright); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(255, 0, 0, 0.2); }
.card:hover::before { transform: scaleX(1); }

.card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 10px; line-height: 1.4; }
.card h3 a { color: var(--text); text-decoration: none; transition: var(--transition); }
.card h3 a:hover { color: var(--pink); }
.card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.65; }
.card-date { font-size: 0.78rem; color: var(--text-dim); margin-top: 12px; }

/* 卡片入场动画 */
.guide-grid li {
  opacity: 0;
  transform: translateY(20px);
  animation: stagger-in 0.5s ease forwards;
}

.guide-grid li:nth-child(1) { animation-delay: 0.05s; }
.guide-grid li:nth-child(2) { animation-delay: 0.1s; }
.guide-grid li:nth-child(3) { animation-delay: 0.15s; }
.guide-grid li:nth-child(4) { animation-delay: 0.2s; }
.guide-grid li:nth-child(5) { animation-delay: 0.25s; }
.guide-grid li:nth-child(6) { animation-delay: 0.3s; }
.guide-grid li:nth-child(7) { animation-delay: 0.35s; }
.guide-grid li:nth-child(8) { animation-delay: 0.4s; }

@keyframes stagger-in {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .guide-grid li { opacity: 1; transform: none; animation: none; }
}

/* =====================
   侧边栏 / aside 通用
   ===================== */
.aside-eyebrow {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--pink);
  text-transform: uppercase;
  margin-bottom: 8px;
  font-family: var(--font-body);
}

.content-aside h3,
.hero-aside h3,
.article-aside h3,
.faq-aside h3,
.changelog-aside h3,
.about-hero-aside h3,
.about-content-aside h3,
.about-extra-aside h3,
.privacy-aside h3,
.privacy-content-aside h3,
.changelog-content-aside h3,
.faq-content-aside h3,
.guide-nav-aside h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
}

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

.aside-links li a {
  display: block;
  padding: 8px 12px;
  min-height: 40px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  line-height: 1.4;
  display: flex;
  align-items: center;
  border-left: 2px solid transparent;
}

.aside-links li a:hover {
  color: var(--text);
  background: rgba(255, 0, 0, 0.08);
  border-left-color: var(--pink);
  padding-left: 16px;
}

.aside-more {
  display: inline-block;
  margin-top: 16px;
  padding: 8px 16px;
  min-height: 40px;
  color: var(--pink);
  text-decoration: none;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
}
.aside-more:hover { border-color: var(--pink); background: rgba(255, 20, 147, 0.1); }

/* =====================
   小标题装饰（section-eyebrow + h2/h3 同级）
   ===================== */
.section-eyebrow {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--red);
  text-transform: uppercase;
  margin-bottom: 10px;
  font-family: var(--font-body);
}

/* h2 默认样式 */
h2 {
  font-family: var(--font-body);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 24px;
  line-height: 1.35;
}

h3 {
  font-family: var(--font-body);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

/* =====================
   Prose（正文）
   ===================== */
.prose {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-muted);
  max-width: 720px;
}

.prose h2 { color: var(--text); margin-top: 2.2em; margin-bottom: 0.8em; font-size: 1.5rem; }
.prose h3 { color: var(--text); margin-top: 1.8em; margin-bottom: 0.6em; font-size: 1.2rem; }
.prose h4 { color: var(--text-muted); margin-top: 1.4em; margin-bottom: 0.5em; font-size: 1.05rem; }
.prose p { margin-bottom: 1.2em; }
.prose a { color: var(--pink); text-decoration: underline; text-underline-offset: 3px; transition: var(--transition); }
.prose a:hover { color: var(--red); }
.prose ul, .prose ol { padding-left: 1.6em; margin-bottom: 1.2em; }
.prose li { margin-bottom: 0.5em; }
.prose strong { color: var(--text); font-weight: 600; }
.prose blockquote {
  border-left: 3px solid var(--red);
  padding: 12px 20px;
  margin: 1.5em 0;
  background: rgba(255, 0, 0, 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
  font-style: italic;
}
.prose code {
  background: rgba(255, 0, 0, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--pink);
}
.prose hr { border: none; border-top: 1px solid var(--border); margin: 2em 0; }
.prose table { width: 100%; border-collapse: collapse; margin-bottom: 1.5em; font-size: 0.92em; }
.prose th { background: rgba(255, 0, 0, 0.1); color: var(--text); padding: 10px 14px; text-align: left; border: 1px solid var(--border); }
.prose td { padding: 9px 14px; border: 1px solid var(--border); color: var(--text-muted); }

/* =====================
   指南页 (guide)
   ===================== */
.guide-main { position: relative; z-index: 1; }

.article-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1fr 240px;
  grid-template-rows: auto 1fr;
  gap: 0 40px;
  align-items: start;
}

.article-figure {
  grid-column: 1;
  grid-row: 1;
  width: 100%;
  max-height: 300px;
  overflow: hidden;
  border-radius: var(--radius-card);
  margin-bottom: 36px;
  border: 1px solid var(--border);
  position: relative;
}

.article-figure--gradient { min-height: 200px; }

.article-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.article-hero-img { width: 100%; height: auto; display: block; }

.article-body {
  grid-column: 1;
  grid-row: 2;
}

.article-meta {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 24px;
  margin-top: 8px;
}

.article-aside {
  grid-column: 2;
  grid-row: 1 / 3;
  position: sticky;
  top: calc(var(--header-h) + 56px);
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  border-left: 3px solid var(--red);
}

.nav-section {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.guide-nav-aside {
  position: relative;
  z-index: 1;
  max-width: 600px;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}

/* =====================
   FAQ 页
   ===================== */
.faq-main { position: relative; z-index: 1; }

.faq-hero-section {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
  align-items: start;
  overflow: hidden;
}

.faq-hero-deco {
  position: absolute;
  top: 0;
  right: 0;
  width: 500px;
  height: 400px;
  overflow: hidden;
  pointer-events: none;
  margin: 0;
}

.faq-hero-text { position: relative; z-index: 1; }

.faq-hero-text h1 {
  font-family: var(--font-body);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
  text-shadow: 0 2px 20px var(--glow-red);
}

.faq-aside {
  position: relative;
  z-index: 1;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  border-right: 3px solid var(--pink);
}

.faq-content-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 64px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  align-items: start;
}

.faq-content-aside {
  position: sticky;
  top: calc(var(--header-h) + 16px);
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}

.faq-body { position: relative; z-index: 1; }

.faq-prose .prose { max-width: 100%; }

/* =====================
   Changelog 页
   ===================== */
.changelog-main { position: relative; z-index: 1; }

.changelog-header-section {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
  align-items: start;
  overflow: hidden;
}

.changelog-deco {
  position: absolute;
  top: 0;
  left: 0;
  width: 450px;
  height: 350px;
  overflow: hidden;
  pointer-events: none;
  margin: 0;
}

.changelog-header-text { position: relative; z-index: 1; }
.changelog-header-text h1 {
  font-family: var(--font-body);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

.changelog-aside {
  position: relative;
  z-index: 1;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  border-left: 3px solid var(--red);
}

.changelog-content-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 64px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
  align-items: start;
  position: relative;
}

.changelog-body { position: relative; z-index: 1; }

.changelog-prose .prose { max-width: 100%; }

.changelog-content-aside {
  position: sticky;
  top: calc(var(--header-h) + 16px);
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}

/* =====================
   About 页
   ===================== */
.about-main { position: relative; z-index: 1; }

.about-hero-section {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
  align-items: start;
  overflow: hidden;
}

.about-deco {
  position: absolute;
  top: 0;
  right: 0;
  width: 500px;
  height: 400px;
  overflow: hidden;
  pointer-events: none;
  margin: 0;
}

.about-hero-text { position: relative; z-index: 1; }
.about-hero-text h1 {
  font-family: var(--font-body);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

.about-hero-aside {
  position: relative;
  z-index: 1;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  border-bottom: 3px solid var(--pink);
}

.about-content-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
  align-items: start;
}

.about-body, .about-content-aside { position: relative; z-index: 1; }

.about-content-aside {
  position: sticky;
  top: calc(var(--header-h) + 16px);
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}

.about-extra-section {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 24px 60px;
  overflow: hidden;
}

.about-extra-aside {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 20px 28px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  min-width: 280px;
}

/* =====================
   Privacy 页
   ===================== */
.privacy-main { position: relative; z-index: 1; }

.privacy-hero-section {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
  align-items: start;
  overflow: hidden;
}

.privacy-deco {
  position: absolute;
  top: 0;
  left: 0;
  width: 400px;
  height: 350px;
  overflow: hidden;
  pointer-events: none;
  margin: 0;
}

.privacy-hero-text { position: relative; z-index: 1; }
.privacy-hero-text h1 {
  font-family: var(--font-body);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

.privacy-aside {
  position: relative;
  z-index: 1;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  border-bottom: 3px solid var(--red);
}

.privacy-content-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 64px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
  align-items: start;
}

.privacy-body { position: relative; z-index: 1; }

.privacy-content-aside {
  position: sticky;
  top: calc(var(--header-h) + 16px);
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}

/* =====================
   页脚（极简：只有 p + small）
   ===================== */
.site-footer {
  position: relative;
  z-index: 10;
  background: rgba(26, 14, 14, 0.92);
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
}

.footer-copy {
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 10px;
  font-family: var(--font-body);
}

.footer-copy a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}
.footer-copy a:hover { color: var(--pink); }

.footer-disclaimer {
  display: block;
  font-size: 0.75rem;
  color: rgba(154, 104, 104, 0.6);
  font-family: var(--font-body);
  line-height: 1.5;
}

/* =====================
   响应式
   ===================== */
@media (max-width: 900px) {
  .hero-section {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    min-height: auto;
    padding-top: 32px;
  }

  .hero-content { flex-direction: column; gap: 28px; }
  .hero-text { text-align: center; max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-figure { width: 100%; max-width: 400px; height: 280px; margin: 0 auto; }
  .hero-aside { grid-column: 1; grid-row: 2; width: 100%; padding: 0; margin-top: 24px; }

  .content-section { grid-template-columns: 1fr; }
  .guides-section { padding: 32px 16px 48px; }

  .article-section { grid-template-columns: 1fr; }
  .article-aside { grid-column: 1; grid-row: 3; position: static; }
  .article-figure { grid-row: 1; }

  .faq-hero-section { grid-template-columns: 1fr; }
  .faq-content-section { grid-template-columns: 1fr; }
  .faq-content-aside { position: static; }

  .changelog-header-section { grid-template-columns: 1fr; }
  .changelog-content-section { grid-template-columns: 1fr; }
  .changelog-content-aside { position: static; }

  .about-hero-section { grid-template-columns: 1fr; }
  .about-content-section { grid-template-columns: 1fr; }
  .about-content-aside { position: static; }

  .privacy-hero-section { grid-template-columns: 1fr; }
  .privacy-content-section { grid-template-columns: 1fr; }
  .privacy-content-aside { position: static; }
}

@media (max-width: 600px) {
  :root { --header-h: 64px; }

  html { font-size: 16px; }

  .header-inner { padding: 0 16px; gap: 8px; }

  .brand-script { font-size: 1.5rem; }

  .nav-right .btn-ghost:last-child { display: none; }

  .hero-section { padding: 24px 16px 28px; }
  .hero-deco-text { font-size: 80px; }
  .hero-figure { height: 220px; }

  .content-section { padding: 32px 16px; }

  .guide-grid { grid-template-columns: 1fr; gap: 16px; }

  .article-section { padding: 28px 16px; }

  .faq-hero-section, .changelog-header-section,
  .about-hero-section, .privacy-hero-section {
    padding: 36px 16px 28px;
  }

  .faq-content-section, .changelog-content-section,
  .about-content-section, .privacy-content-section {
    padding: 28px 16px 48px;
  }

  .sticky-anchor-bar { display: none; }

  .announce-bar { font-size: 0.75rem; padding: 6px 12px; }

  .btn-cta, .btn-primary, .btn-ghost, .btn-outline {
    padding: 10px 16px;
    font-size: 0.85rem;
  }
}