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

/* ============================================================
   CSS 自定义属性
   ============================================================ */
:root {
  --c-green: #69ff69;
  --c-cyan: #00ffff;
  --c-dark: #172617;
  --c-dark2: #1e3020;
  --c-dark3: #0e1a0e;
  --c-glass: rgba(105, 255, 105, 0.07);
  --c-glass-border: rgba(105, 255, 105, 0.2);
  --c-glass-hover: rgba(0, 255, 255, 0.1);
  --c-text: #d4f5d4;
  --c-text-muted: #8db88d;
  --c-text-bright: #f0fff0;
  --c-chrome-start: #b8ffb8;
  --c-chrome-end: #00e5e5;
  --radius-card: 0px;
  --radius-btn: 2px;
  --shadow-neon-green: 0 0 12px rgba(105, 255, 105, 0.6), 0 0 24px rgba(105, 255, 105, 0.3);
  --shadow-neon-cyan: 0 0 12px rgba(0, 255, 255, 0.6), 0 0 24px rgba(0, 255, 255, 0.3);
  --font-main: 'Figtree', 'Noto Sans', system-ui, sans-serif;
  --nav-h: 64px;
  --transition: 0.2s ease;
}

/* ============================================================
   重置与基础
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-main);
  background-color: var(--c-dark3);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(105,255,105,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(0,255,255,0.06) 0%, transparent 60%);
  color: var(--c-text);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-green); text-decoration: none; transition: color var(--transition), text-shadow var(--transition); }
a:hover { color: var(--c-cyan); text-shadow: var(--shadow-neon-cyan); }
ul, ol { list-style: none; }
hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin: 0.75rem 0 1.25rem;
}

/* ============================================================
   导航 — details > summary + menu > li > a
   ============================================================ */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 26, 14, 0.92);
  border-bottom: 1px solid var(--c-glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: var(--nav-h);
  list-style: none;
  cursor: default;
}

.nav-summary::-webkit-details-marker { display: none; }
.nav-summary::marker { display: none; }

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.nav-logo { width: 32px; height: 32px; object-fit: contain; }

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-green), var(--c-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.03em;
}

.nav-toggle-label {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  display: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 0 1rem 0.5rem;
  border-top: 1px solid rgba(105,255,105,0.08);
}

.nav-menu li { display: flex; align-items: center; }

.nav-menu li a {
  display: flex;
  align-items: center;
  padding: 0 0.9rem;
  height: 44px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-text);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a[aria-current="page"] {
  color: var(--c-green);
  border-bottom-color: var(--c-green);
  text-shadow: 0 0 8px rgba(105,255,105,0.5);
}

.nav-search { margin-left: auto; }

.search-form {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.search-form input[type="search"] {
  background: rgba(105,255,105,0.08);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius-btn);
  color: var(--c-text-bright);
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
  font-family: var(--font-main);
  width: 180px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-form input[type="search"]:focus {
  border-color: var(--c-green);
  box-shadow: 0 0 0 2px rgba(105,255,105,0.2);
}

.search-form input[type="search"]::placeholder { color: var(--c-text-muted); }

/* ============================================================
   按钮
   ============================================================ */
.btn-neon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.4rem;
  min-height: 44px;
  background: linear-gradient(135deg, var(--c-green) 0%, #40e040 100%);
  color: var(--c-dark3);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition), filter var(--transition);  text-shadow: none;
  letter-spacing: 0.02em;
}

.btn-neon:hover {
  box-shadow: var(--shadow-neon-green);
  transform: translateY(-1px);
  filter: brightness(1.1);
  color: var(--c-dark3);
  text-shadow: none;
}

.btn-neon.btn-lg { padding: 0.75rem 2rem; font-size: 1rem; min-height: 52px; }

.btn-chrome {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.4rem;
  min-height: 44px;
  background: linear-gradient(135deg, var(--c-chrome-start), var(--c-chrome-end), #a0fafa, var(--c-chrome-end));
  background-size: 200% 200%;
  color: var(--c-dark3);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition), background-position var(--transition);
  animation: chrome-shift 4s ease infinite;
}

.btn-chrome:hover {
  box-shadow: var(--shadow-neon-cyan);
  transform: translateY(-1px);
  color: var(--c-dark3);
  text-shadow: none;
}

.btn-chrome.btn-lg { padding: 0.75rem 2rem; font-size: 1rem; min-height: 52px; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.2rem;
  min-height: 44px;
  background: transparent;
  color: var(--c-cyan);
  border: 1px solid var(--c-cyan);
  border-radius: var(--radius-btn);
  font-size: 0.88rem;
  font-weight: 500;
  transition: background var(--transition), box-shadow var(--transition), color var(--transition);
}

.btn-outline:hover {
  background: rgba(0,255,255,0.1);
  box-shadow: var(--shadow-neon-cyan);
  color: var(--c-cyan);
  text-shadow: none;
}

.btn-search {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0.9rem;
  min-height: 36px;
  background: var(--c-green);
  color: var(--c-dark3);
  border: none;
  border-radius: var(--radius-btn);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: box-shadow var(--transition);
  font-family: var(--font-main);
}

.btn-search:hover { box-shadow: var(--shadow-neon-green); }

/* ============================================================
   玻璃拟态卡片
   ============================================================ */
.glass-card {
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  backdrop-filter: blur(6px);
}

.glass-card:hover {
  background: var(--c-glass-hover);
  border-color: rgba(0,255,255,0.3);
  box-shadow: 0 4px 24px rgba(0,255,255,0.12);
  transform: translateY(-2px);
}

/* ============================================================
   main — 两栏布局 main > div + aside
   ============================================================ */
main {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  align-items: start;
}

/* main > div */
main > div {
  min-width: 0;
}

/* ============================================================
   Hero 区 — 点阵底纹 + 装饰
   ============================================================ */
.hero-section {
  position: relative;
  min-height: 45vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin-bottom: 3rem;
  overflow: hidden;
}

.hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(105,255,105,0.25) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  opacity: 0.5;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: 3rem 1.5rem;
}

.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  text-shadow: 0 0 8px rgba(0,255,255,0.6);
}

.hero-h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--c-green) 0%, var(--c-cyan) 50%, #a0ffa0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 8px rgba(105,255,105,0.4));
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  max-width: 520px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-sparkles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.sp {
  position: absolute;
  color: var(--c-green);
  font-size: 1.2rem;
  animation: sparkle 2.5s ease-in-out infinite;
}

.sp1 { top: 15%; left: 10%; animation-delay: 0s; color: var(--c-green); }
.sp2 { top: 20%; right: 12%; animation-delay: 0.6s; color: var(--c-cyan); }
.sp3 { bottom: 20%; left: 18%; animation-delay: 1.2s; color: var(--c-green); }
.sp4 { bottom: 15%; right: 8%; animation-delay: 1.8s; color: var(--c-cyan); }

/* 频道页 Hero */
.ch-hero-section {
  position: relative;
  padding: 2.5rem 0 2rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--c-glass-border);
  overflow: hidden;
}

.ch-hero-section .hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(105,255,105,0.18) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.35;
}

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

.ch-hero-inner h1 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  margin: 0.4rem 0 0.75rem;
  background: linear-gradient(135deg, var(--c-green), var(--c-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ch-hero-desc {
  color: var(--c-text-muted);
  font-size: 0.95rem;
  max-width: 600px;
  margin-bottom: 0.75rem;
}

.ch-hero-meta {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.ch-hero-meta time {
  font-size: 0.82rem;
  color: var(--c-text-muted);
}

/* ============================================================
   section 标题
   ============================================================ */
.section-h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-green);
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
  text-shadow: 0 0 6px rgba(105,255,105,0.3);
}

.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--c-text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

/* ============================================================
   内容区 sections
   ============================================================ */
.content-section { margin-bottom: 3rem; }
.channels-section { margin-bottom: 3rem; }
.recent-section { margin-bottom: 2rem; }

/* ============================================================
   频道卡片网格
   ============================================================ */
.channels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 0.5rem;
}

.ch-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.ch-card h3 { font-size: 1rem; font-weight: 600; }
.ch-card h3 a { color: var(--c-text-bright); }
.ch-card h3 a:hover { color: var(--c-green); text-shadow: var(--shadow-neon-green); }

.ch-desc {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  flex: 1;
  line-height: 1.55;
}

.ch-links {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.ch-link {
  font-size: 0.82rem;
  color: var(--c-cyan);
  padding: 0.15rem 0;
  border-bottom: 1px dashed rgba(0,255,255,0.2);
}

.ch-link:hover { color: var(--c-green); text-shadow: var(--shadow-neon-green); border-bottom-color: var(--c-green); }

/* ============================================================
   文章卡片网格
   ============================================================ */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.art-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.art-meta time { font-size: 0.78rem; color: var(--c-text-muted); }

.art-card h3 { font-size: 0.95rem; font-weight: 600; }
.art-card h3 a { color: var(--c-text-bright); }
.art-card h3 a:hover { color: var(--c-green); }

.art-card p {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  line-height: 1.5;
  flex: 1;
}

/* ============================================================
   栏目页子页列表 — section > div×n
   ============================================================ */
.children-section { margin-bottom: 3rem; }

.child-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.card-meta time { font-size: 0.78rem; color: var(--c-text-muted); }
.child-card h3 { font-size: 1rem; font-weight: 600; }
.child-card h3 a { color: var(--c-text-bright); }
.child-card h3 a:hover { color: var(--c-green); }
.child-card p { font-size: 0.88rem; color: var(--c-text-muted); line-height: 1.55; }

/* ============================================================
   文章页
   ============================================================ */
.art-header-section { margin-bottom: 2rem; }
.art-body-section { margin-bottom: 2.5rem; }
.art-nav-section { margin-bottom: 2rem; }

.breadcrumb {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.breadcrumb a { color: var(--c-text-muted); }
.breadcrumb a:hover { color: var(--c-cyan); text-shadow: none; }
.breadcrumb span[aria-current] { color: var(--c-text); }

.art-hero-wrap { margin-bottom: 1.5rem; }
.art-hero-img { width: 100%; max-height: 320px; object-fit: cover; }

.art-h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, var(--c-green), var(--c-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.art-dates {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.art-date { font-size: 0.8rem; color: var(--c-text-muted); }

.art-lead {
  font-size: 1rem;
  color: var(--c-text-muted);
  line-height: 1.65;
  border-left: 3px solid var(--c-green);
  padding-left: 1rem;
}

.art-nav-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ============================================================
   关于页
   ============================================================ */
.about-hero-section {
  position: relative;
  padding: 3rem 0 2.5rem;
  margin-bottom: 2.5rem;
  overflow: hidden;
  border-bottom: 1px solid var(--c-glass-border);
}

.about-hero-section .hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(0,255,255,0.18) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.3;
}

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

.about-hero-inner h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  margin: 0.4rem 0 0.75rem;
  background: linear-gradient(135deg, var(--c-green), var(--c-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-hero-inner p { color: var(--c-text-muted); max-width: 600px; }
.about-date { margin-top: 0.6rem; font-size: 0.82rem; color: var(--c-text-muted); }
.about-date time { color: var(--c-text-muted); }

.about-links-section { margin-bottom: 2rem; }

.about-link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}

.about-link-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
  padding: 1.25rem 1rem;
  color: var(--c-text);
  font-size: 0.88rem;
  font-weight: 500;
}

.about-link-card:hover { color: var(--c-green); }

.alc-icon {
  font-size: 1.5rem;
  color: var(--c-cyan);
  line-height: 1;
}

/* ============================================================
   隐私页
   ============================================================ */
.privacy-header-section {
  padding: 2.5rem 0 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--c-glass-border);
}

.privacy-header-section h1 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  margin: 0.4rem 0 0.75rem;
  background: linear-gradient(135deg, var(--c-green), var(--c-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.privacy-dates {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.privacy-dates time { font-size: 0.8rem; color: var(--c-text-muted); }

.privacy-lead {
  font-size: 0.95rem;
  color: var(--c-text-muted);
  border-left: 3px solid var(--c-cyan);
  padding-left: 1rem;
  line-height: 1.65;
}

.privacy-nav-section { margin-bottom: 2rem; }
.privacy-nav-links { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* ============================================================
   正文样式 (prose-wrap)
   ============================================================ */
.prose-wrap {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
  max-width: 72ch;
}

.prose-wrap h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-green);
  margin: 2rem 0 0.3rem;
}

.prose-wrap h2 + hr {
  margin-bottom: 1rem;
}

.prose-wrap h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-cyan);
  margin: 1.5rem 0 0.5rem;
}

.prose-wrap h3 + hr { margin-bottom: 0.75rem; }

.prose-wrap p { margin-bottom: 1rem; }

.prose-wrap ul, .prose-wrap ol {
  margin: 0.75rem 0 1rem 1.5rem;
  list-style: disc;
}

.prose-wrap ol { list-style: decimal; }

.prose-wrap li { margin-bottom: 0.35rem; }

.prose-wrap a { color: var(--c-cyan); border-bottom: 1px dashed rgba(0,255,255,0.4); }
.prose-wrap a:hover { color: var(--c-green); text-shadow: none; }

.prose-wrap strong { color: var(--c-text-bright); font-weight: 600; }
.prose-wrap em { color: var(--c-cyan); font-style: italic; }

.prose-wrap blockquote {
  border-left: 3px solid var(--c-green);
  padding: 0.5rem 1rem;
  background: rgba(105,255,105,0.05);
  color: var(--c-text-muted);
  font-style: italic;
  margin: 1rem 0;
}

.prose-wrap code {
  background: rgba(105,255,105,0.1);
  padding: 0.15em 0.4em;
  border-radius: 2px;
  font-size: 0.88em;
  color: var(--c-green);
}

.prose-wrap pre {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--c-glass-border);
  padding: 1rem;
  overflow-x: auto;
  margin: 1rem 0;
}

.prose-wrap pre code { background: none; padding: 0; }

.prose-wrap table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}

.prose-wrap th {
  background: rgba(105,255,105,0.1);
  color: var(--c-green);
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--c-glass-border);
}

.prose-wrap td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid rgba(105,255,105,0.08);
}

/* ============================================================
   侧边栏
   ============================================================ */
.sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 1rem);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.sidebar-card { padding: 1.25rem; }

.sidebar-h2 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--c-cyan);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.sidebar-links { display: flex; flex-direction: column; gap: 0; }

.sidebar-links li a {
  display: block;
  padding: 0.45rem 0;
  font-size: 0.85rem;
  color: var(--c-text-muted);
  border-bottom: 1px solid rgba(105,255,105,0.08);
  transition: color var(--transition), padding-left var(--transition);
}

.sidebar-links li:last-child a { border-bottom: none; }

.sidebar-links li a:hover {
  color: var(--c-green);
  padding-left: 0.4rem;
  text-shadow: none;
}

/* ============================================================
   页脚 — footer 三列 dl
   ============================================================ */
.site-footer {
  background: rgba(0, 0, 0, 0.5);
  border-top: 1px solid var(--c-glass-border);
  margin-top: 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-col dt {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-green);
  margin-bottom: 0.75rem;
  text-shadow: 0 0 6px rgba(105,255,105,0.3);
}

.footer-col dd { margin-bottom: 0.4rem; }

.footer-col dd a {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  transition: color var(--transition);
}

.footer-col dd a:hover { color: var(--c-cyan); text-shadow: none; }

.footer-bottom {
  border-top: 1px solid rgba(105,255,105,0.08);
  padding: 1.25rem 1.5rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  line-height: 1.6;
}

/* ============================================================
   动效 & 动画
   ============================================================ */
@keyframes sparkle {
  0%, 100% { opacity: 0.3; transform: scale(0.8) rotate(0deg); }
  50% { opacity: 1; transform: scale(1.2) rotate(20deg); }
}

@keyframes chrome-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 8px rgba(105,255,105,0.3); }
  50% { box-shadow: 0 0 20px rgba(105,255,105,0.7), 0 0 40px rgba(105,255,105,0.3); }
}

.glass-card:hover { animation: none; }

/* 滚动动画占位 — 由 app.js 添加 .is-visible */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: none;
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .fade-in { opacity: 1; transform: none; }
}

/* ============================================================
   响应式断点
   ============================================================ */
@media (max-width: 960px) {
  main {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  :root { --nav-h: 56px; }

  .nav-summary {
    padding: 0 1rem;
    height: var(--nav-h);
  }

  .nav-toggle-label { display: block; }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    padding: 0.5rem 0;
  }

  .nav-menu li a {
    padding: 0 1rem;
    height: 48px;
    border-bottom: 1px solid rgba(105,255,105,0.06);
    border-left: none;
  }

  .nav-search { margin-left: 0; padding: 0.5rem 1rem; }

  .search-form input[type="search"] { width: 100%; }
  .search-form { flex-direction: column; align-items: stretch; }
  .search-form button { width: 100%; }

  main { padding: 1.25rem 1rem 2rem; }

  .hero-section { min-height: 42vh; }
  .hero-inner { padding: 2rem 1rem; }

  .channels-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .about-link-grid { grid-template-columns: repeat(2, 1fr); }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 2rem 1rem 1rem;
  }

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

  .art-nav-links { flex-direction: column; }
  .privacy-nav-links { flex-direction: column; }
}

@media (max-width: 400px) {
  .about-link-grid { grid-template-columns: 1fr; }
}