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

/* ===== 设计令牌 ===== */
:root {
  --green: #69ff69;
  --cyan: #00ffff;
  --dark: #172617;
  --dark-2: #1e331e;
  --dark-3: #0e1a0e;
  --text-main: #e8ffe8;
  --text-muted: #7aaa7a;
  --border-green: rgba(105,255,105,0.35);
  --border-cyan: rgba(0,255,255,0.35);
  --radius-card: 18px;
  --radius-btn: 10px;
  --font: 'Plus Jakarta Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-w: 1200px;
  --aside-w: 220px;
  --gap: 2rem;
  --glow-green: 0 0 12px rgba(105,255,105,0.6), 0 0 24px rgba(105,255,105,0.3);
  --glow-cyan: 0 0 12px rgba(0,255,255,0.6), 0 0 24px rgba(0,255,255,0.3);
  --metallic: linear-gradient(135deg, #69ff69 0%, #00ffff 40%, #69ff69 70%, #b4ffb4 100%);
  --metallic-border: linear-gradient(135deg, #69ff69, #00ffff, #ff69b4, #69ff69);
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.75;
  background-color: var(--dark-3);
  color: var(--text-main);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--green); text-decoration: none; transition: color 0.2s, opacity 0.2s; }
a:hover { color: var(--cyan); }
ul, menu { list-style: none; }

/* ===== 网格底纹 ===== */
.grid-deco-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(105,255,105,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(105,255,105,0.06) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ===== 顶部公告条 ===== */
.top-ticker {
  background: linear-gradient(90deg, var(--dark-2) 0%, #1a3a1a 50%, var(--dark-2) 100%);
  border-bottom: 1px solid var(--border-green);
  padding: 8px 1.5rem;
  text-align: center;
  overflow: hidden;
}
.ticker-text {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--green);
  text-shadow: var(--glow-green);
}

/* ===== 站点头部 ===== */
.site-header {
  background: linear-gradient(180deg, var(--dark-2) 0%, rgba(23,38,23,0.97) 100%);
  border-bottom: 2px solid transparent;
  background-clip: padding-box;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 20px rgba(105,255,105,0.15);
}
.site-header::after {
  content: '';
  display: block;
  height: 2px;
  background: var(--metallic-border);
}

/* 品牌行 */
.brand-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.5rem;
  border-bottom: 1px solid var(--border-green);
  max-width: var(--max-w);
  margin: 0 auto;
  flex-wrap: wrap;
}
.brand-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}
.brand-logo { width: 36px; height: 36px; border-radius: 8px; }
.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--metallic);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.brand-tagline {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-left: auto;
}

/* 导航行 */
.main-nav {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.nav-details { width: 100%; }
.nav-details > summary.nav-summary {
  display: none;
}
.nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  padding: 0;
}
.nav-menu li a {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, text-shadow 0.2s;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.nav-menu li a:hover {
  color: var(--green);
  border-bottom-color: var(--green);
  text-shadow: var(--glow-green);
}

/* ===== 按钮 ===== */
.btn-neon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  background: linear-gradient(135deg, var(--green) 0%, #b4ffb4 50%, var(--cyan) 100%);
  color: var(--dark-3);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  letter-spacing: 0.06em;
  box-shadow: var(--glow-green);
  transition: box-shadow 0.2s, transform 0.15s, filter 0.2s;
  text-shadow: none;
  min-height: 44px;
  text-decoration: none;
}
.btn-neon:hover {
  box-shadow: var(--glow-cyan), var(--glow-green);
  transform: translateY(-2px);
  color: var(--dark-3);
  filter: brightness(1.1);
}
.btn-neon.btn-lg {
  padding: 0.85rem 2rem;
  font-size: 1rem;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  background: transparent;
  color: var(--cyan);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--cyan);
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
  min-height: 44px;
  text-decoration: none;
}
.btn-outline:hover {
  background: rgba(0,255,255,0.1);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
  color: var(--cyan);
}

/* ===== 霓虹标签 ===== */
.neon-label {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--dark-3);
  background: var(--green);
  padding: 2px 7px;
  border-radius: 4px;
  margin-right: 0.5rem;
  vertical-align: middle;
  box-shadow: var(--glow-green);
}
.neon-num {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  padding: 2px 8px;
  border-radius: 4px;
  margin-right: 0.6rem;
  vertical-align: middle;
  box-shadow: var(--glow-cyan);
}

/* ===== Hero（首页） ===== */
.hero-section {
  position: relative;
  min-height: 45vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark-3) 0%, var(--dark-2) 60%, #1a2e1a 100%);
  padding: 3rem 1.5rem 2.5rem;
}
.hero-content-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 3rem;
  position: relative;
  z-index: 1;
  width: 100%;
}
.hero-text {
  flex: 1;
  min-width: 0;
}
.hero-eyebrow {
  margin-bottom: 0.75rem;
}
.hero-eyebrow span {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  border: 1px solid var(--border-cyan);
  padding: 3px 10px;
  border-radius: 4px;
}
.hero-h1 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
  background: var(--metallic);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 520px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-media {
  flex: 0 0 340px;
  max-width: 340px;
}
.hero-img {
  border-radius: var(--radius-card);
  border: 1.5px solid var(--border-green);
  box-shadow: var(--glow-green);
  width: 100%;
}
.hero-placeholder {
  width: 340px;
  height: 260px;
  border-radius: var(--radius-card);
  border: 1.5px solid var(--border-green);
  position: relative;
  overflow: hidden;
  background: var(--dark-2);
}
.hero-grid-deco {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(105,255,105,0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(105,255,105,0.12) 1px, transparent 1px);
  background-size: 30px 30px;
}
.hero-grid-deco::after {
  content: '✦';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  font-size: 4rem;
  color: var(--green);
  opacity: 0.4;
  text-shadow: var(--glow-green);
}

/* ===== 页面英雄（内页通用） ===== */
.page-hero-section {
  position: relative;
  padding: 3rem 1.5rem 2.5rem;
  background: linear-gradient(135deg, var(--dark-3) 0%, var(--dark-2) 100%);
  overflow: hidden;
  border-bottom: 1px solid var(--border-green);
}
.page-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.page-hero-eyebrow {
  margin-bottom: 0.6rem;
}
.page-hero-eyebrow span {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  border: 1px solid var(--border-cyan);
  padding: 3px 10px;
  border-radius: 4px;
}
.page-hero-h1 {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  background: var(--metallic);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-hero-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.8;
}
.page-hero-date {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ===== 主布局 ===== */
.site-wrap { min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; }

.layout-with-aside {
  display: flex;
  gap: var(--gap);
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  align-items: flex-start;
}
.site-aside {
  flex: 0 0 var(--aside-w);
  min-width: 0;
  position: sticky;
  top: 110px;
  order: -1;
}
.main-content {
  flex: 1;
  min-width: 0;
}

/* ===== 侧边栏 ===== */
.aside-block {
  background: var(--dark-2);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-card);
  padding: 1.1rem 1rem;
  margin-bottom: 1.25rem;
}
.aside-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--green);
  text-shadow: var(--glow-green);
  margin-bottom: 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-green);
}
.aside-title span { display: inline-block; }
.aside-links { display: flex; flex-direction: column; gap: 0.3rem; }
.aside-links li a {
  display: block;
  padding: 0.4rem 0.5rem;
  font-size: 0.83rem;
  color: var(--text-muted);
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
  min-height: 36px;
  display: flex;
  align-items: center;
}
.aside-links li a:hover,
.aside-links li a.active {
  color: var(--green);
  background: rgba(105,255,105,0.08);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tag-chip {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cyan);
  border: 1px solid var(--border-cyan);
  border-radius: 20px;
  background: rgba(0,255,255,0.05);
  transition: background 0.2s, box-shadow 0.2s;
  min-height: 28px;
  align-items: center;
}
.tag-chip:hover {
  background: rgba(0,255,255,0.15);
  box-shadow: var(--glow-cyan);
  color: var(--cyan);
}
.tag-chip-active {
  background: rgba(0,255,255,0.2);
  box-shadow: var(--glow-cyan);
}

/* ===== 正文 ===== */
.page-content-body {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-main);
  margin-bottom: 2.5rem;
}
.page-content-body h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--green);
  margin: 2rem 0 0.85rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-green);
}
.page-content-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--cyan);
  margin: 1.5rem 0 0.6rem;
}
.page-content-body p { margin-bottom: 1rem; }
.page-content-body ul, .page-content-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.page-content-body li { margin-bottom: 0.4rem; }
.page-content-body a { color: var(--green); text-decoration: underline; text-decoration-color: rgba(105,255,105,0.4); }
.page-content-body a:hover { color: var(--cyan); text-decoration-color: var(--cyan); }
.page-content-body blockquote {
  border-left: 3px solid var(--green);
  padding: 0.5rem 1rem;
  margin: 1rem 0;
  background: rgba(105,255,105,0.05);
  border-radius: 0 8px 8px 0;
  color: var(--text-muted);
}
.page-content-body code {
  background: rgba(105,255,105,0.1);
  color: var(--green);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--green); }
.bc-sep { opacity: 0.5; }

/* ===== 章节标题 ===== */
.section-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.section-title span { display: inline-block; }
.section-block { margin-bottom: 3rem; }

/* ===== 首页分类卡片 ===== */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}
.cat-card {
  background: var(--dark-2);
  border-radius: var(--radius-card);
  padding: 0;
  overflow: hidden;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}
.cat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  padding: 1.5px;
  background: var(--metallic-border);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.cat-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(105,255,105,0.18); }
.cat-card-inner { padding: 1.5rem; }
.cat-card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.cat-card-title span:last-child { color: var(--text-main); }
.cat-card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}
.cat-child-links {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 1rem;
}
.cat-child-link {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 3px 0;
  transition: color 0.2s;
}
.cat-child-link:hover { color: var(--cyan); }
.cat-child-link::before { content: '› '; color: var(--green); }

/* ===== 文章列表 ===== */
.art-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.art-item {
  background: var(--dark-2);
  border-radius: var(--radius-card);
  overflow: hidden;
  position: relative;
  transition: transform 0.2s;
}
.art-item::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  padding: 1.5px;
  background: linear-gradient(135deg, var(--border-green), var(--border-cyan));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.art-item:hover { transform: translateX(4px); }
.art-item-inner { padding: 1.25rem 1.5rem; display: flex; flex-direction: column; gap: 0.4rem; }
.art-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}
.art-item-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}
.art-item-title span { display: inline; }
.art-item-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}
.art-read-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--green);
  align-self: flex-start;
  margin-top: 0.25rem;
  transition: color 0.2s, text-shadow 0.2s;
}
.art-read-link:hover { color: var(--cyan); text-shadow: var(--glow-cyan); }

/* ===== 文章页 ===== */
.art-header-section {
  position: relative;
  padding: 2.5rem 1.5rem 2rem;
  background: linear-gradient(135deg, var(--dark-3) 0%, var(--dark-2) 100%);
  overflow: hidden;
  border-bottom: 1px solid var(--border-green);
}
.art-header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.art-hero-wrap { margin: 1rem 0; }
.art-hero-img {
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 1.5px solid var(--border-green);
  width: 100%;
}
.art-meta-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.art-meta-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}
.art-tags { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.art-h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  background: var(--metallic);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.art-lead {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.8;
}
.art-body-section { }
.article-content { }
.art-footer-block {
  border-top: 1px solid var(--border-green);
  padding-top: 1.5rem;
  margin-top: 1rem;
}
.art-nav-links { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ===== 子页卡片列表 ===== */
.child-cards-list {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.child-card {
  background: var(--dark-2);
  border-radius: var(--radius-card);
  overflow: hidden;
  display: flex;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}
.child-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  padding: 1.5px;
  background: var(--metallic-border);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.child-card:hover { transform: translateX(6px); box-shadow: 0 4px 20px rgba(105,255,105,0.12); }
.card-thumb-wrap { flex: 0 0 120px; overflow: hidden; }
.card-thumb { width: 120px; height: 100%; object-fit: cover; }
.child-card-body {
  flex: 1;
  padding: 1.1rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.child-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}
.child-card-title span { display: inline; }
.child-card-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===== 相关阅读 ===== */
.rel-list { display: flex; flex-direction: column; gap: 0.5rem; }
.rel-item { border-bottom: 1px solid rgba(105,255,105,0.1); padding-bottom: 0.5rem; }
.rel-item:last-child { border-bottom: none; }
.rel-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  color: var(--text-muted);
  transition: color 0.2s;
}
.rel-link:hover { color: var(--green); }
.rel-title { font-size: 0.83rem; font-weight: 500; line-height: 1.4; }
.rel-date { font-size: 0.72rem; color: var(--text-muted); opacity: 0.7; }

/* ===== About 卡片 ===== */
.about-cards-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.about-info-card {
  background: var(--dark-2);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}
.about-info-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  padding: 1.5px;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.about-card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.about-card-title span:last-child { color: var(--text-main); }
.about-info-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; }
.about-nav-block { display: flex; gap: 1rem; margin-top: 1rem; flex-wrap: wrap; }

/* ===== 隐私页 ===== */
.privacy-footer-block { display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; }
.no-content { color: var(--text-muted); font-style: italic; padding: 1rem 0; }
.privacy-toc li a {
  font-size: 0.83rem;
  color: var(--text-muted);
  padding: 0.3rem 0.4rem;
  display: block;
  border-radius: 5px;
  min-height: 32px;
  display: flex;
  align-items: center;
}
.privacy-toc li a:hover { color: var(--green); background: rgba(105,255,105,0.07); }

/* ===== 标签页 ===== */
.tag-back-block { display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark-2);
  border-top: 2px solid transparent;
  position: relative;
}
.site-footer::before {
  content: '';
  display: block;
  height: 2px;
  background: var(--metallic-border);
}
.site-footer > article {
  max-width: var(--max-w);
  margin: 0 auto;
}
.site-footer {
  display: grid;
  grid-template-rows: auto auto;
}
footer.site-footer {
  padding-top: 0;
}
.site-footer > article:first-child,
.site-footer > article:nth-child(2),
.site-footer > article:nth-child(3) {
  display: block;
}

/* 三栏布局 */
.site-footer {
  display: block;
}
.footer-cols {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 2rem;
}

/* 由于 article 直接在 footer 下，用 CSS grid 排列 */
.site-footer > article {
  padding: 2.5rem 1.5rem 0;
}
.site-footer > article:first-child { padding-top: 2.5rem; }

/* 三列 grid 直接作用于 footer */
.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto auto;
  column-gap: 0;
  row-gap: 0;
  padding: 0;
}
.site-footer > article {
  padding: 2rem 1.5rem 1.5rem;
  border-right: 1px solid var(--border-green);
}
.site-footer > article:last-of-type { border-right: none; }
.site-footer > .footer-bottom {
  grid-column: 1 / -1;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-green);
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  background: var(--dark-3);
}

.footer-sec-title {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--green);
  text-shadow: var(--glow-green);
  margin-bottom: 1rem;
}
.footer-sec-title span { display: inline-block; }
.footer-contact-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}
.footer-form {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.footer-input {
  flex: 1;
  min-width: 160px;
  padding: 0.6rem 0.9rem;
  background: var(--dark-3);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-btn);
  color: var(--text-main);
  font-family: var(--font);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  min-height: 44px;
}
.footer-input:focus {
  border-color: var(--green);
  box-shadow: var(--glow-green);
}
.footer-btn { white-space: nowrap; }
.footer-nav-list { display: flex; flex-direction: column; gap: 0.45rem; }
.footer-nav-list li a {
  font-size: 0.84rem;
  color: var(--text-muted);
  transition: color 0.2s;
  display: block;
  padding: 3px 0;
  min-height: 32px;
  display: flex;
  align-items: center;
}
.footer-nav-list li a:hover { color: var(--green); }
.footer-about-text {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}
.footer-legal-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-legal-links a {
  font-size: 0.82rem;
  color: var(--text-muted);
  min-height: 32px;
  display: flex;
  align-items: center;
}
.footer-legal-links a:hover { color: var(--green); }

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===== 移动端 ===== */
@media (max-width: 900px) {
  .hero-content-wrap { flex-direction: column; gap: 2rem; }
  .hero-media { flex: none; max-width: 100%; width: 100%; }
  .hero-placeholder { width: 100%; height: 200px; }
  .site-footer {
    grid-template-columns: 1fr;
  }
  .site-footer > article { border-right: none; border-bottom: 1px solid var(--border-green); }
  .site-footer > article:last-of-type { border-bottom: none; }
  .about-cards-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  body { font-size: 16px; }
  .layout-with-aside {
    flex-direction: column;
    padding: 1.5rem 1rem;
  }
  .site-aside {
    position: static;
    flex: none;
    width: 100%;
    order: 1;
  }
  .main-content { order: 0; }
  .brand-tagline { display: none; }
  .nav-details > summary.nav-summary {
    display: flex;
    align-items: center;
    padding: 0.7rem 0;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    list-style: none;
    min-height: 44px;
    user-select: none;
  }
  .nav-details > summary.nav-summary::after {
    content: '▾';
    margin-left: auto;
    color: var(--green);
  }
  .nav-details:not([open]) .nav-menu { display: none; }
  .nav-menu {
    flex-direction: column;
    padding-bottom: 0.75rem;
  }
  .nav-menu li a {
    padding: 0.65rem 0.5rem;
    border-bottom: 1px solid rgba(105,255,105,0.07);
    border-bottom-width: 1px;
  }
  .hero-section { min-height: auto; padding: 2rem 1rem; }
  .page-hero-section { padding: 2rem 1rem; }
  .art-header-section { padding: 2rem 1rem; }
  .cat-grid { grid-template-columns: 1fr; }
  .hero-h1 { font-size: 1.5rem; }
  .page-hero-h1 { font-size: 1.35rem; }
  .art-h1 { font-size: 1.35rem; }
}

@media (max-width: 480px) {
  .brand-name { font-size: 0.95rem; }
  .btn-neon.btn-lg { padding: 0.7rem 1.2rem; font-size: 0.9rem; }
  .hero-actions { flex-direction: column; }
  .cat-grid { grid-template-columns: 1fr; }
  .about-cards-row { grid-template-columns: 1fr; }
  .art-meta-row { flex-direction: column; align-items: flex-start; gap: 0.4rem; }
  .footer-form { flex-direction: column; }
  .footer-input { min-width: unset; width: 100%; }
}

/* ===== 减少动效偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}