/* ===== XXXO 导航 · Glassmorphism Deep Crimson Theme ===== */

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

/* ── 变量 ── */
:root {
  --c-red: #ff0000;
  --c-purple: #8b00ff;
  --c-base: #261717;
  --c-base2: #1a0f0f;
  --c-base3: #2e1a1a;
  --c-surface: rgba(255,255,255,0.08);
  --c-surface-hover: rgba(255,255,255,0.14);
  --c-border: rgba(255,255,255,0.15);
  --c-text: #f0e8e8;
  --c-text-muted: rgba(240,232,232,0.6);
  --c-text-dim: rgba(240,232,232,0.4);
  --c-glow-red: rgba(255,0,0,0.35);
  --c-glow-purple: rgba(139,0,255,0.3);
  --font-head: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --sidenav-w: 72px;
  --radius-card: 10px;
  --radius-pill: 999px;
  --blur: 15px;
  --blur-sm: 10px;
  --transition: 0.22s cubic-bezier(0.4,0,0.2,1);
}

/* ── 重置 ── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--c-base2);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul,ol { list-style: none; }
button,input { font: inherit; border: none; outline: none; }

/* ── 全局背景渐变 ── */
.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: radial-gradient(ellipse 80% 60% at 20% 10%, rgba(139,0,255,0.25) 0%, transparent 60%),
              radial-gradient(ellipse 60% 50% at 80% 80%, rgba(255,0,0,0.2) 0%, transparent 55%),
              linear-gradient(160deg, #261717 0%, #1a0a1a 50%, #0d0a1a 100%);
  pointer-events: none;
}
.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
  pointer-events: none;
}
.bg-orb--1 {
  width: 45vw; height: 45vw;
  background: radial-gradient(circle, rgba(255,0,0,0.4), transparent 70%);
  top: -10%; left: -10%;
  animation: orb-drift 12s ease-in-out infinite alternate;
}
.bg-orb--2 {
  width: 40vw; height: 40vw;
  background: radial-gradient(circle, rgba(139,0,255,0.45), transparent 70%);
  bottom: 10%; right: -5%;
  animation: orb-drift 16s ease-in-out infinite alternate-reverse;
}
.bg-orb--3 {
  width: 30vw; height: 30vw;
  background: radial-gradient(circle, rgba(255,0,0,0.2), transparent 70%);
  top: 50%; left: 40%;
  animation: orb-drift 20s ease-in-out infinite alternate;
}
@keyframes orb-drift {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(5%, 8%) scale(1.1); }
}
@media (prefers-reduced-motion: reduce) {
  .bg-orb { animation: none; }
}

/* ── 玻璃卡片 ── */
.glass-card {
  background: var(--c-surface);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--c-border);
  border-radius: var(--radius-card);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}
.glass-card:hover {
  background: var(--c-surface-hover);
  box-shadow: 0 0 24px var(--c-glow-red);
  transform: translateY(-2px);
}

/* ── 按钮 ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  min-height: 44px;
}
.btn--primary {
  background: linear-gradient(135deg, var(--c-red), #cc0000);
  color: #fff;
  box-shadow: 0 0 16px var(--c-glow-red);
}
.btn--primary:hover {
  box-shadow: 0 0 28px var(--c-glow-red), 0 0 8px rgba(255,0,0,0.6);
  transform: translateY(-1px);
}
.btn--ghost {
  background: var(--c-surface);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid var(--c-border);
  color: var(--c-text);
}
.btn--ghost:hover {
  border-color: var(--c-red);
  box-shadow: 0 0 12px var(--c-glow-red);
}
.btn--outline {
  background: transparent;
  border: 1px solid var(--c-purple);
  color: var(--c-text);
}
.btn--outline:hover {
  background: rgba(139,0,255,0.15);
  box-shadow: 0 0 14px var(--c-glow-purple);
}

/* ── 导航侧栏 ── */
.sidenav {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--sidenav-w);
  z-index: 100;
  display: flex;
  flex-direction: column;
  background: rgba(26,10,26,0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--c-border);
}
.sidenav nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  padding: 16px 0 20px;
  gap: 8px;
}
.sidenav__brand {
  margin-bottom: 8px;
}
.sidenav__logo {
  width: 40px; height: 40px;
  border-radius: 8px;
}
.sidenav__brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c-red), var(--c-purple));
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  color: #fff;
  letter-spacing: -1px;
}
.sidenav__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  width: 100%;
  padding: 0 8px;
  overflow-y: auto;
  scrollbar-width: none;
}
.sidenav__list::-webkit-scrollbar { display: none; }

/* 侧栏：aside > nav > ul > li > a （按抽签） */
.sidenav__list li { width: 100%; }
.nav-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px 4px;
  border-radius: 8px;
  background: transparent;
  border: 1px solid transparent;
  transition: all var(--transition);
  min-height: 52px;
  text-align: center;
  gap: 3px;
}
.nav-pill:hover, .nav-pill--active {
  background: var(--c-surface);
  border-color: var(--c-border);
  box-shadow: 0 0 12px var(--c-glow-red);
}
.nav-pill--active {
  border-color: var(--c-red);
}
.nav-pill__num {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--c-red);
  line-height: 1;
}
.nav-pill__label {
  font-size: 8px;
  font-weight: 600;
  color: var(--c-text-muted);
  line-height: 1.2;
  word-break: keep-all;
  writing-mode: horizontal-tb;
  max-width: 52px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-pill--active .nav-pill__label { color: var(--c-text); }
.sidenav__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(100% - 16px);
  padding: 10px 4px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c-red), var(--c-purple));
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: center;
  min-height: 44px;
  transition: all var(--transition);
  box-shadow: 0 0 12px var(--c-glow-red);
}
.sidenav__cta:hover {
  box-shadow: 0 0 20px var(--c-glow-red);
  transform: translateY(-1px);
}

/* ── 页面布局 ── */
.page-wrap {
  position: relative;
  z-index: 1;
  margin-left: var(--sidenav-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── 首页 Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 80px 60px 80px 40px;
  overflow: hidden;
}
.hero__deco-text {
  position: absolute;
  left: 0; bottom: -0.15em;
  font-family: var(--font-head);
  font-size: clamp(8rem, 20vw, 22rem);
  font-weight: 700;
  color: rgba(255,255,255,0.03);
  letter-spacing: -0.05em;
  pointer-events: none;
  user-select: none;
  line-height: 1;
  z-index: 0;
}
.hero__collage {
  position: absolute;
  left: 32px; top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 16px;
  z-index: 1;
}
.hero__tile {
  width: 200px;
  overflow: hidden;
}
.hero__tile--1 {
  height: 260px;
  background: linear-gradient(135deg, rgba(255,0,0,0.2), rgba(139,0,255,0.15));
  transform: rotate(-3deg) translateX(-10px);
}
.hero__tile--2 {
  height: 180px;
  background: linear-gradient(135deg, rgba(139,0,255,0.2), rgba(255,0,0,0.1));
  transform: rotate(2deg) translateX(15px);
}
.hero__content {
  position: relative;
  z-index: 2;
  max-width: 520px;
  text-align: right;
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-red);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero__h1 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 30%, rgba(255,100,100,0.9));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__lead {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero__actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* ── 内容区域 ── */
.content-area {
  flex: 1;
  padding: 60px 40px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

/* ── 区块标题 ── */
.block-title {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--c-text);
}
.block-title__accent {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-red);
  border: 1px solid var(--c-red);
  border-radius: 4px;
  padding: 2px 8px;
  letter-spacing: 0.05em;
}

/* ── 栏目卡片（分类索引）dl > dt > a + dd ── */
.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 4px;
  margin-bottom: 60px;
}
.section-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  text-decoration: none;
  color: var(--c-text);
}
.section-card__idx {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-purple);
  flex-shrink: 0;
}
.section-card__title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  flex: 1;
}
.section-card__arrow {
  color: var(--c-red);
  font-size: 1.1rem;
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition);
}
.section-card:hover .section-card__arrow {
  opacity: 1;
  transform: translateX(0);
}
.section-grid dd.section-card__desc {
  display: none;
}

/* ── 文章卡片网格 ── */
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.story-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all var(--transition);
}
.story-card__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--c-purple);
  letter-spacing: 0.08em;
  border: 1px solid var(--c-purple);
  border-radius: var(--radius-pill);
  padding: 2px 10px;
  align-self: flex-start;
}
.story-card__link { text-decoration: none; }
.story-card__title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-text);
  transition: color var(--transition);
}
.story-card:hover .story-card__title { color: var(--c-red); }
.story-card__desc {
  font-size: 0.875rem;
  color: var(--c-text-muted);
  line-height: 1.6;
}
.story-card__date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-text-dim);
  margin-top: auto;
}
.stories-block__more {
  text-align: center;
  padding: 20px 0;
}

/* ── 正文 prose ── */
.prose-section { margin-bottom: 60px; }
.prose-wrap {
  max-width: 760px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--c-text-muted);
}
.prose-wrap h2 {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-text);
  margin: 2em 0 0.8em;
  padding-left: 12px;
  border-left: 3px solid var(--c-red);
}
.prose-wrap h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-text);
  margin: 1.5em 0 0.6em;
}
.prose-wrap p { margin-bottom: 1em; }
.prose-wrap a {
  color: var(--c-red);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
.prose-wrap a:hover { color: #ff6666; }
.prose-wrap ul, .prose-wrap ol {
  margin: 1em 0 1em 1.5em;
  list-style: disc;
}
.prose-wrap ol { list-style: decimal; }
.prose-wrap li { margin-bottom: 0.4em; }
.prose-wrap strong { color: var(--c-text); font-weight: 600; }
.prose-wrap code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--c-border);
  border-radius: 4px;
  padding: 0.1em 0.4em;
}
.prose-wrap blockquote {
  border-left: 3px solid var(--c-purple);
  padding-left: 16px;
  margin: 1.5em 0;
  color: var(--c-text-muted);
  font-style: italic;
}

/* ── 面包屑 ── */
.breadcrumb {
  font-size: 0.8rem;
  color: var(--c-text-dim);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.breadcrumb a {
  color: var(--c-text-muted);
  transition: color var(--transition);
}
.breadcrumb a:hover { color: var(--c-red); }

/* ── Section 页 ── */
.section-page {
  flex: 1;
  padding: 60px 40px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}
.section-header {
  margin-bottom: 48px;
}
.section-header__h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 40%, rgba(255,100,100,0.8));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-header__desc {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  max-width: 640px;
}

/* ── 子页列表 dl > dt > a + dd ── */
.child-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 60px;
}
.child-dt { width: 100%; }
.child-link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  text-decoration: none;
  color: var(--c-text);
}
.child-link__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-red);
  flex-shrink: 0;
  min-width: 24px;
}
.child-link__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.child-link__title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
}
.child-link__desc {
  font-size: 0.825rem;
  color: var(--c-text-muted);
}
.child-link__date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-text-dim);
  flex-shrink: 0;
}
.child-dd { display: none; }

/* ── 相关链接 ── */
.related-nav, .related-section, .about-links { margin-bottom: 48px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
}
.related-grid dd { display: none; }
.related-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 20px;
  text-align: center;
  font-family: var(--font-head);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-text);
  text-decoration: none;
  min-height: 52px;
  transition: all var(--transition);
}
.related-link:hover { color: var(--c-red); }

/* ── Story 页 ── */
.story-page {
  flex: 1;
  padding: 60px 40px;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}
.story-header {
  margin-bottom: 40px;
}
.story-header__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--c-purple);
  border: 1px solid var(--c-purple);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  margin-bottom: 16px;
  letter-spacing: 0.06em;
}
.story-header__h1 {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 40%, rgba(255,100,100,0.8));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.story-header__desc {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}
.story-header__meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.story-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-text-dim);
}
.story-date--mod { color: var(--c-purple); }
.story-hero {
  margin-bottom: 36px;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--c-border);
}
.story-hero__img { width: 100%; }
.story-body { margin-bottom: 48px; }
.story-related { margin-bottom: 40px; }
.story-back {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding: 24px 0;
  border-top: 1px solid var(--c-border);
}

/* ── About 页 ── */
.about-page {
  flex: 1;
  padding: 60px 40px;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}
.about-header {
  margin-bottom: 48px;
}
.about-header__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-red);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.about-header__h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 40%, rgba(255,100,100,0.8));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-header__desc {
  font-size: 1.05rem;
  color: var(--c-text-muted);
}
.about-body { margin-bottom: 48px; }
.about-identity {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  margin-bottom: 32px;
}
.about-identity__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-red), var(--c-purple));
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  flex-shrink: 0;
}
.about-identity__info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.about-identity__info strong {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-text);
}
.about-identity__info span {
  font-size: 0.875rem;
  color: var(--c-text-muted);
}
.about-back { display: flex; gap: 12px; padding-top: 24px; border-top: 1px solid var(--c-border); }

/* ── Privacy 页 ── */
.privacy-page {
  flex: 1;
  padding: 60px 40px;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}
.privacy-header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--c-border);
}
.privacy-header__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-text-dim);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}
.privacy-header__h1 {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 12px;
}
.privacy-body { margin-bottom: 40px; }
.privacy-nav { display: flex; gap: 12px; padding-top: 24px; border-top: 1px solid var(--c-border); }

/* ── Default 页 ── */
.default-page {
  flex: 1;
  padding: 60px 40px;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}

/* ── sections-block / stories-block ── */
.sections-block { margin-bottom: 60px; }
.stories-block { margin-bottom: 60px; }

/* ── 页脚 ── */
.site-footer {
  border-top: 1px solid var(--c-border);
  background: rgba(26,10,26,0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  margin-top: auto;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 48px 40px 32px;
  max-width: 1100px;
  margin: 0 auto;
}
.footer__brand-name {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--c-text);
}
.footer__brand-desc {
  font-size: 0.875rem;
  color: var(--c-text-muted);
  line-height: 1.6;
}
.footer__links {
  display: flex;
  gap: 32px;
}
.footer__link-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer__link-list a {
  font-size: 0.875rem;
  color: var(--c-text-muted);
  transition: color var(--transition);
  min-height: 28px;
  display: flex;
  align-items: center;
}
.footer__link-list a:hover { color: var(--c-red); }
.footer__subscribe {
  padding: 24px 40px;
  margin: 0 40px;
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: calc(1100px - 80px);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 0;
  flex-wrap: wrap;
}
.footer__subscribe-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
}
.footer__form {
  display: flex;
  gap: 8px;
  flex: 1;
  min-width: 240px;
}
.footer__input {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-pill);
  padding: 10px 18px;
  color: var(--c-text);
  font-size: 0.875rem;
  min-height: 44px;
  transition: border-color var(--transition);
}
.footer__input::placeholder { color: var(--c-text-dim); }
.footer__input:focus {
  border-color: var(--c-red);
  outline: none;
}
.footer__submit { min-height: 44px; }
.footer__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 40px;
  border-top: 1px solid var(--c-border);
  font-size: 0.8rem;
  color: var(--c-text-dim);
  font-family: var(--font-mono);
  gap: 16px;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}
.footer__bar a {
  color: var(--c-text-dim);
  transition: color var(--transition);
}
.footer__bar a:hover { color: var(--c-red); }

/* ── 空提示 ── */
.empty-note {
  color: var(--c-text-dim);
  font-size: 0.9rem;
  padding: 24px 0;
}

/* ── 交错动画 ── */
@media (prefers-reduced-motion: no-preference) {
  .section-grid .glass-card,
  .story-card,
  .child-link {
    animation: fade-up 0.5s ease both;
  }
  .section-grid dt:nth-child(2n) .glass-card,
  .story-grid .story-card:nth-child(2n),
  .child-dt:nth-child(2n) .child-link { animation-delay: 0.05s; }
  .section-grid dt:nth-child(3n) .glass-card,
  .story-grid .story-card:nth-child(3n),
  .child-dt:nth-child(3n) .child-link { animation-delay: 0.1s; }
  .section-grid dt:nth-child(4n) .glass-card,
  .story-grid .story-card:nth-child(4n) { animation-delay: 0.15s; }
  @keyframes fade-up {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
  }
}

/* ── 响应式 ── */
@media (max-width: 900px) {
  .hero {
    padding: 60px 24px 60px 24px;
    justify-content: center;
    align-items: flex-end;
    min-height: 100vh;
  }
  .hero__collage { display: none; }
  .hero__content { text-align: left; max-width: 100%; }
  .hero__actions { justify-content: flex-start; }
  .footer__inner { grid-template-columns: 1fr; gap: 24px; }
  .footer__links { gap: 24px; }
  .footer__subscribe { margin: 0 24px; padding: 20px 24px; }
}

@media (max-width: 768px) {
  :root { --sidenav-w: 0px; }
  .sidenav {
    position: fixed;
    left: 0; bottom: 0; top: auto;
    width: 100%;
    height: auto;
    border-right: none;
    border-top: 1px solid var(--c-border);
    z-index: 200;
  }
  .sidenav nav {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    gap: 4px;
    overflow-x: auto;
    scrollbar-width: none;
    height: auto;
  }
  .sidenav nav::-webkit-scrollbar { display: none; }
  .sidenav__brand { display: none; }
  .sidenav__list {
    flex-direction: row;
    flex: 1;
    padding: 0;
    overflow-x: auto;
    overflow-y: visible;
    gap: 4px;
  }
  .sidenav__list li { width: auto; flex-shrink: 0; }
  .nav-pill {
    flex-direction: row;
    padding: 8px 12px;
    min-height: 44px;
    min-width: 44px;
    gap: 4px;
    white-space: nowrap;
  }
  .nav-pill__label {
    max-width: none;
    white-space: nowrap;
    font-size: 9px;
  }
  .sidenav__cta {
    width: auto;
    flex-shrink: 0;
    padding: 8px 14px;
    font-size: 10px;
    min-height: 44px;
  }
  .page-wrap {
    margin-left: 0;
    padding-bottom: 68px;
  }
  .content-area,
  .section-page,
  .story-page,
  .about-page,
  .privacy-page,
  .default-page {
    padding: 32px 20px;
  }
  .hero {
    padding: 40px 20px 60px;
    min-height: 100vh;
  }
  .hero__deco-text { font-size: 5rem; }
  .footer__inner { padding: 32px 20px 24px; }
  .footer__bar { padding: 14px 20px; flex-direction: column; align-items: flex-start; }
  .footer__subscribe { margin: 0 20px; }
  .story-grid { grid-template-columns: 1fr; }
  .section-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .footer__links { flex-direction: column; gap: 16px; }
}

@media (max-width: 480px) {
  .hero__h1 { font-size: 1.8rem; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .related-grid { grid-template-columns: 1fr; }
  .footer__form { flex-direction: column; }
  .footer__subscribe { flex-direction: column; align-items: flex-start; }
}

/* ── 可访问性 ── */
:focus-visible {
  outline: 2px solid var(--c-red);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}