/* ============================================
   暗网萝莉「星幕影视」原创主题 v1.0
   设计风格：深空蓝 + 霓虹光影 + 玻璃拟态
   ============================================ */

:root {
  --deep-space: #0a0e27;
  --cosmos-dark: #0f1435;
  --nebula-purple: #6c3ce0;
  --neon-pink: #ff2d78;
  --warm-gold: #ffc857;
  --ice-blue: #00d4ff;
  --soft-white: #f0f0ff;
  --glass-bg: rgba(15, 20, 53, 0.72);
  --glass-border: rgba(108, 60, 224, 0.25);
  --card-bg: rgba(18, 24, 58, 0.85);
  --text-main: #e8e6f0;
  --text-dim: #9b97b0;
  --text-bright: #ffffff;
  --gradient-brand: linear-gradient(135deg, #6c3ce0, #ff2d78);
  --gradient-gold: linear-gradient(135deg, #ffc857, #ff8a00);
  --gradient-ice: linear-gradient(135deg, #00d4ff, #6c3ce0);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --shadow-glow: 0 0 30px rgba(108, 60, 224, 0.3);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 12px 48px rgba(108, 60, 224, 0.4);
  --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-main: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --max-width: 1280px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background: var(--deep-space);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}
a { color: var(--ice-blue); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--neon-pink); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { color: var(--text-bright); line-height: 1.3; font-weight: 700; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--deep-space); }
::-webkit-scrollbar-thumb { background: var(--nebula-purple); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--neon-pink); }

.wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* === 玻璃拟态导航栏 === */
.topnav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--glass-border);
  padding: 0 24px;
}
.topnav.scrolled { background: rgba(10, 14, 39, 0.95); }
.topnav-inner {
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; height: 68px; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 42px; height: 42px; border-radius: 10px; }
.brand-name {
  font-size: 1.25rem; font-weight: 800; letter-spacing: 1px;
  background: var(--gradient-brand); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.nav-links { display: flex; justify-content: center; gap: 6px; }
.nav-links a {
  color: var(--text-dim); font-size: 0.92rem; font-weight: 500;
  padding: 8px 16px; border-radius: var(--radius-sm);
  transition: all var(--transition-fast); position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 2px; left: 50%; width: 0; height: 2px;
  background: var(--gradient-brand); border-radius: 1px;
  transition: all var(--transition-fast); transform: translateX(-50%);
}
.nav-links a:hover, .nav-links a.on {
  color: var(--text-bright); background: rgba(108, 60, 224, 0.12);
}
.nav-links a:hover::after, .nav-links a.on::after { width: 60%; }
.nav-search {
  display: flex; align-items: center; gap: 8px;
  background: rgba(108, 60, 224, 0.1); border: 1px solid var(--glass-border);
  border-radius: 20px; padding: 6px 14px; transition: all var(--transition-fast);
}
.nav-search:focus-within { border-color: var(--nebula-purple); box-shadow: 0 0 12px rgba(108, 60, 224, 0.3); }
.nav-search input {
  background: none; border: none; outline: none; color: var(--text-main);
  font-size: 0.88rem; width: 140px; font-family: var(--font-main);
}
.nav-search input::placeholder { color: var(--text-dim); }
.nav-search button {
  background: none; border: none; color: var(--ice-blue); cursor: pointer; font-size: 0.9rem;
}
.hamburger {
  display: none; background: none; border: none; cursor: pointer;
  width: 36px; height: 36px; position: relative;
}
.hamburger span {
  display: block; width: 22px; height: 2px; background: var(--text-main);
  position: absolute; left: 7px; transition: all var(--transition-fast);
}
.hamburger span:nth-child(1) { top: 10px; }
.hamburger span:nth-child(2) { top: 17px; }
.hamburger span:nth-child(3) { top: 24px; }
.hamburger.open span:nth-child(1) { top: 17px; transform: rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { top: 17px; transform: rotate(-45deg); }

/* === Hero 视频封面墙 === */
.hero {
  position: relative; min-height: 92vh; padding-top: 68px;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.hero-mosaic {
  position: absolute; inset: 0; display: grid;
  grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(3, 1fr);
  gap: 4px; opacity: 0.18; filter: blur(1px);
}
.hero-mosaic img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,14,39,0.5) 0%, rgba(10,14,39,0.85) 60%, var(--deep-space) 100%);
}
.hero-content {
  position: relative; z-index: 2; text-align: center; padding: 40px 24px; max-width: 780px;
}
.hero-badge {
  display: inline-block; padding: 6px 20px; border-radius: 20px;
  background: rgba(108, 60, 224, 0.2); border: 1px solid var(--glass-border);
  font-size: 0.85rem; color: var(--ice-blue); margin-bottom: 20px;
  backdrop-filter: blur(8px);
}
.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900; margin-bottom: 18px; letter-spacing: 2px;
}
.hero-content h1 em {
  font-style: normal;
  background: var(--gradient-brand); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-desc {
  font-size: 1.08rem; color: var(--text-dim); margin-bottom: 32px;
  max-width: 600px; margin-left: auto; margin-right: auto;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-glow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-lg); font-weight: 700;
  font-size: 1rem; border: none; cursor: pointer; transition: all var(--transition-fast);
  font-family: var(--font-main);
}
.btn-glow.primary {
  background: var(--gradient-brand); color: #fff;
  box-shadow: 0 4px 24px rgba(108, 60, 224, 0.5);
}
.btn-glow.primary:hover { transform: translateY(-2px); box-shadow: 0 8px 36px rgba(108, 60, 224, 0.7); }
.btn-glow.ghost {
  background: transparent; color: var(--text-bright); border: 1.5px solid var(--glass-border);
}
.btn-glow.ghost:hover { border-color: var(--neon-pink); color: var(--neon-pink); }
.hero-stats {
  display: flex; gap: 40px; justify-content: center; margin-top: 40px;
  padding-top: 28px; border-top: 1px solid rgba(108, 60, 224, 0.15);
}
.hero-stats .stat { text-align: center; }
.hero-stats .stat-num {
  font-size: 1.8rem; font-weight: 800;
  background: var(--gradient-gold); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-stats .stat-label { font-size: 0.82rem; color: var(--text-dim); margin-top: 4px; }

/* === 面包屑 === */
.crumbs {
  padding: 14px 0; font-size: 0.85rem; color: var(--text-dim);
  border-bottom: 1px solid rgba(108, 60, 224, 0.1);
}
.crumbs a { color: var(--text-dim); }
.crumbs a:hover { color: var(--ice-blue); }
.crumbs span { margin: 0 8px; opacity: 0.5; }

/* === 区块通用 === */
.section { padding: 80px 0; position: relative; }
.section-alt { background: var(--cosmos-dark); }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head .tag {
  display: inline-block; padding: 5px 16px; border-radius: 14px;
  background: rgba(108, 60, 224, 0.15); color: var(--nebula-purple);
  font-size: 0.82rem; font-weight: 600; margin-bottom: 14px;
  border: 1px solid rgba(108, 60, 224, 0.2);
}
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 12px; }
.section-head h2 em {
  font-style: normal;
  background: var(--gradient-brand); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.section-head p { color: var(--text-dim); font-size: 1rem; max-width: 560px; margin: 0 auto; }

/* === 3D倾斜视频卡片横向滚动 === */
.hot-scroll { overflow-x: auto; padding: 20px 0 30px; scrollbar-width: none; }
.hot-scroll::-webkit-scrollbar { display: none; }
.hot-track { display: flex; gap: 24px; padding: 0 24px; min-width: max-content; }
.vcard {
  flex: 0 0 300px; background: var(--card-bg);
  border-radius: var(--radius-md); overflow: hidden;
  border: 1px solid var(--glass-border);
  transition: all var(--transition-smooth);
  transform: perspective(800px) rotateY(0deg);
}
.vcard:hover {
  transform: perspective(800px) rotateY(-3deg) translateY(-8px);
  box-shadow: var(--shadow-hover); border-color: var(--nebula-purple);
}
.vcard-thumb {
  position: relative; aspect-ratio: 16/9; overflow: hidden; background: var(--cosmos-dark);
}
.vcard-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-smooth); }
.vcard:hover .vcard-thumb img { transform: scale(1.08); }
.vcard-play {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity var(--transition-fast); background: rgba(10, 14, 39, 0.45);
}
.vcard:hover .vcard-play { opacity: 1; }
.vcard-play svg {
  width: 52px; height: 52px; fill: #fff;
  filter: drop-shadow(0 2px 12px rgba(0,0,0,0.5));
  transition: transform var(--transition-fast);
}
.vcard:hover .vcard-play svg { transform: scale(1.15); }
.vcard-dur {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75); color: #fff;
  padding: 2px 8px; border-radius: 4px; font-size: 0.78rem;
}
.vcard-live { background: var(--neon-pink); }
.vcard-body { padding: 16px; }
.vcard-body h3 {
  font-size: 0.95rem; font-weight: 600; margin-bottom: 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; line-height: 1.4;
}
.vcard-meta { display: flex; gap: 12px; font-size: 0.8rem; color: var(--text-dim); margin-bottom: 8px; }
.vcard-tag {
  display: inline-block; padding: 3px 10px; border-radius: 10px;
  background: rgba(108, 60, 224, 0.12); color: var(--nebula-purple);
  font-size: 0.75rem; font-weight: 500;
}

/* === 视频网格 === */
.vgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }

/* === 六边形蜂巢频道矩阵 === */
.honeycomb { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; max-width: 900px; margin: 0 auto; }
.hex-card {
  width: 160px; height: 180px; position: relative;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background: var(--gradient-brand); transition: all var(--transition-smooth);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; cursor: pointer;
}
.hex-card-inner {
  position: absolute; inset: 2px;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background: var(--cosmos-dark);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  transition: background var(--transition-smooth);
}
.hex-card:hover .hex-card-inner { background: rgba(108, 60, 224, 0.3); }
.hex-icon { font-size: 2rem; margin-bottom: 8px; position: relative; z-index: 1; }
.hex-label { font-size: 0.85rem; font-weight: 600; color: var(--text-bright); position: relative; z-index: 1; }

/* === 创作者聚光灯 左右交替 === */
.spotlight-item {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
  align-items: center; margin-bottom: 60px;
}
.spotlight-item:nth-child(even) { direction: rtl; }
.spotlight-item:nth-child(even) > * { direction: ltr; }
.spotlight-img {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 2px solid var(--glass-border); box-shadow: var(--shadow-card);
}
.spotlight-img img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.spotlight-text h3 { font-size: 1.4rem; margin-bottom: 12px; }
.spotlight-text p { color: var(--text-dim); margin-bottom: 16px; }

/* === AI工坊堆叠卡片 === */
.ai-stack { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ai-card {
  background: var(--card-bg); border-radius: var(--radius-md);
  padding: 32px 24px; border: 1px solid var(--glass-border);
  transition: all var(--transition-smooth); position: relative; overflow: hidden;
}
.ai-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-brand); transform: scaleX(0);
  transition: transform var(--transition-smooth); transform-origin: left;
}
.ai-card:hover::before { transform: scaleX(1); }
.ai-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.ai-card-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: rgba(108, 60, 224, 0.15); display: flex;
  align-items: center; justify-content: center; font-size: 1.6rem; margin-bottom: 18px;
}
.ai-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.ai-card p { color: var(--text-dim); font-size: 0.92rem; }

/* === 社区脉动弹幕墙 === */
.pulse-zone { display: grid; grid-template-columns: 2fr 1fr; gap: 32px; }
.danmaku-wall {
  background: var(--card-bg); border-radius: var(--radius-md);
  border: 1px solid var(--glass-border); padding: 24px;
  min-height: 320px; overflow: hidden; position: relative;
}
.danmaku-line {
  white-space: nowrap; animation: dm-scroll 18s linear infinite;
  padding: 6px 0; font-size: 0.88rem; color: var(--text-dim);
}
.danmaku-line:nth-child(even) { animation-duration: 22s; animation-delay: -5s; }
.danmaku-line:nth-child(3n) { animation-duration: 15s; animation-delay: -8s; }
@keyframes dm-scroll { 0% { transform: translateX(100%); } 100% { transform: translateX(-100%); } }
.dm-text {
  display: inline-block; padding: 4px 14px; border-radius: 14px;
  background: rgba(108, 60, 224, 0.1); margin-right: 20px;
}
.live-sidebar { display: flex; flex-direction: column; gap: 16px; }
.live-card {
  background: var(--card-bg); border-radius: var(--radius-md);
  border: 1px solid var(--glass-border); overflow: hidden;
  transition: all var(--transition-fast);
}
.live-card:hover { border-color: var(--neon-pink); }
.live-card-thumb { position: relative; aspect-ratio: 16/9; }
.live-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.live-badge {
  position: absolute; top: 8px; left: 8px;
  background: var(--neon-pink); color: #fff; padding: 3px 10px;
  border-radius: 10px; font-size: 0.75rem; font-weight: 600;
  animation: live-pulse 2s infinite;
}
@keyframes live-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }
.live-card-info { padding: 12px; }
.live-card-info h4 { font-size: 0.9rem; margin-bottom: 4px; }
.live-card-info span { font-size: 0.8rem; color: var(--text-dim); }

/* === 专家环形排列 === */
.expert-ring { display: flex; flex-wrap: wrap; justify-content: center; gap: 32px; }
.expert-node { text-align: center; width: 180px; transition: transform var(--transition-smooth); }
.expert-node:hover { transform: translateY(-8px); }
.expert-avatar {
  width: 100px; height: 100px; border-radius: 50%;
  border: 3px solid var(--glass-border); margin: 0 auto 12px;
  overflow: hidden; transition: border-color var(--transition-fast); object-fit: cover;
}
.expert-node:hover .expert-avatar { border-color: var(--nebula-purple); }
.expert-node h4 { font-size: 1rem; margin-bottom: 4px; }
.expert-node .role { color: var(--neon-pink); font-size: 0.82rem; font-weight: 500; margin-bottom: 6px; }
.expert-node p { font-size: 0.8rem; color: var(--text-dim); }

/* === FAQ手风琴 === */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  margin-bottom: 12px; border-radius: var(--radius-md);
  background: var(--card-bg); border: 1px solid var(--glass-border);
  overflow: hidden; transition: border-color var(--transition-fast);
}
.faq-item.open { border-color: var(--nebula-purple); }
.faq-q {
  padding: 18px 24px; cursor: pointer; display: flex;
  justify-content: space-between; align-items: center;
  font-weight: 600; font-size: 0.98rem; color: var(--text-bright);
  transition: background var(--transition-fast);
}
.faq-q:hover { background: rgba(108, 60, 224, 0.08); }
.faq-q .arrow { transition: transform var(--transition-fast); color: var(--nebula-purple); font-size: 1.2rem; }
.faq-item.open .faq-q .arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height var(--transition-smooth);
  padding: 0 24px; color: var(--text-dim); font-size: 0.92rem; line-height: 1.8;
}
.faq-item.open .faq-a { max-height: 300px; padding: 0 24px 18px; }

/* === 用户评论瀑布流 === */
.reviews-flow { column-count: 3; column-gap: 20px; }
.review-card {
  break-inside: avoid; background: var(--card-bg);
  border-radius: var(--radius-md); padding: 20px;
  margin-bottom: 20px; border: 1px solid var(--glass-border);
  transition: all var(--transition-fast);
}
.review-card:hover { border-color: var(--nebula-purple); transform: translateY(-4px); }
.review-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-head img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.review-name { font-weight: 600; font-size: 0.92rem; }
.review-date { font-size: 0.78rem; color: var(--text-dim); }
.review-stars { color: var(--warm-gold); font-size: 0.9rem; margin-bottom: 8px; }
.review-card > p { font-size: 0.9rem; color: var(--text-dim); line-height: 1.7; }

/* === 页脚 === */
.site-foot {
  background: var(--cosmos-dark); padding: 60px 0 0;
  border-top: 1px solid rgba(108, 60, 224, 0.15);
}
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.foot-brand p { color: var(--text-dim); font-size: 0.9rem; margin-top: 12px; line-height: 1.7; }
.foot-col h4 {
  font-size: 1rem; margin-bottom: 16px; position: relative; padding-bottom: 10px;
}
.foot-col h4::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 30px; height: 2px; background: var(--gradient-brand);
}
.foot-col a {
  display: block; color: var(--text-dim); font-size: 0.88rem;
  padding: 5px 0; transition: all var(--transition-fast);
}
.foot-col a:hover { color: var(--ice-blue); padding-left: 6px; }
.foot-qr { display: flex; gap: 16px; margin-top: 12px; }
.foot-qr img { width: 90px; height: 90px; border-radius: var(--radius-sm); border: 1px solid var(--glass-border); }
.foot-bottom {
  border-top: 1px solid rgba(108, 60, 224, 0.1);
  padding: 20px 0; text-align: center; font-size: 0.82rem; color: var(--text-dim);
}
.foot-bottom a { color: var(--ice-blue); }

/* === 内页Banner === */
.page-banner {
  padding: 120px 0 50px; text-align: center;
  background: linear-gradient(180deg, var(--cosmos-dark) 0%, var(--deep-space) 100%);
  position: relative;
}
.page-banner::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at center top, rgba(108,60,224,0.15) 0%, transparent 70%);
}
.page-banner h1 { font-size: clamp(1.6rem, 4vw, 2.6rem); margin-bottom: 12px; position: relative; }
.page-banner p { color: var(--text-dim); font-size: 1rem; position: relative; max-width: 600px; margin: 0 auto; }

/* === 内容文章区 === */
.article-block { max-width: 860px; margin: 0 auto; }
.article-block h2 { font-size: 1.5rem; margin: 32px 0 16px; }
.article-block h3 { font-size: 1.2rem; margin: 24px 0 12px; color: var(--ice-blue); }
.article-block p { color: var(--text-dim); margin-bottom: 16px; font-size: 0.95rem; }

/* === 联系页双栏 === */
.contact-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-box {
  background: var(--card-bg); border-radius: var(--radius-md);
  padding: 32px; border: 1px solid var(--glass-border);
}
.contact-box h3 { font-size: 1.2rem; margin-bottom: 18px; }
.info-line { padding: 10px 0; border-bottom: 1px solid rgba(108,60,224,0.08); font-size: 0.92rem; }
.info-line .label { color: var(--text-dim); display: inline-block; min-width: 90px; }

/* === 时间线 === */
.timeline { position: relative; max-width: 700px; margin: 0 auto; padding-left: 40px; }
.timeline::before {
  content: ''; position: absolute; left: 14px; top: 0; bottom: 0;
  width: 2px; background: var(--gradient-brand);
}
.tl-item { position: relative; margin-bottom: 40px; }
.tl-dot {
  position: absolute; left: -34px; top: 4px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--nebula-purple);
  border: 3px solid var(--deep-space); box-shadow: 0 0 12px rgba(108,60,224,0.5);
}
.tl-year { font-size: 0.85rem; color: var(--neon-pink); font-weight: 700; margin-bottom: 6px; }
.tl-item h3 { font-size: 1.1rem; margin-bottom: 8px; }
.tl-item p { color: var(--text-dim); font-size: 0.92rem; }

/* === 分类标签栏 === */
.cat-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; justify-content: center; }
.cat-bar a {
  padding: 8px 20px; border-radius: 20px; font-size: 0.88rem;
  background: rgba(108, 60, 224, 0.1); color: var(--text-dim);
  border: 1px solid transparent; transition: all var(--transition-fast);
}
.cat-bar a:hover, .cat-bar a.on {
  background: var(--gradient-brand); color: #fff; border-color: transparent;
}

/* === 专家详情卡 === */
.expert-detail { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 28px; }
.expert-profile {
  background: var(--card-bg); border-radius: var(--radius-md);
  padding: 28px; border: 1px solid var(--glass-border);
  text-align: center; transition: all var(--transition-smooth);
}
.expert-profile:hover { border-color: var(--nebula-purple); transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.expert-profile img {
  width: 110px; height: 110px; border-radius: 50%;
  border: 3px solid var(--glass-border); margin: 0 auto 16px; object-fit: cover;
}
.expert-profile h3 { font-size: 1.15rem; margin-bottom: 6px; }
.expert-profile .role { color: var(--neon-pink); font-size: 0.85rem; margin-bottom: 12px; }
.expert-profile p { color: var(--text-dim); font-size: 0.88rem; text-align: left; margin-bottom: 16px; }
.expert-btns { display: flex; gap: 10px; justify-content: center; }
.btn-sm {
  padding: 8px 18px; border-radius: 18px; font-size: 0.82rem;
  font-weight: 600; cursor: pointer; transition: all var(--transition-fast);
  border: none; font-family: var(--font-main);
}
.btn-sm.fill { background: var(--gradient-brand); color: #fff; }
.btn-sm.outline { background: transparent; color: var(--ice-blue); border: 1px solid var(--glass-border); }
.btn-sm:hover { transform: translateY(-2px); }

/* === 响应式 === */
@media (max-width: 1024px) {
  .nav-links { gap: 2px; }
  .nav-links a { padding: 8px 10px; font-size: 0.85rem; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .pulse-zone { grid-template-columns: 1fr; }
  .spotlight-item { grid-template-columns: 1fr; }
  .spotlight-item:nth-child(even) { direction: ltr; }
  .ai-stack { grid-template-columns: repeat(2, 1fr); }
  .reviews-flow { column-count: 2; }
}
@media (max-width: 768px) {
  .hamburger { display: block; }
  .nav-links {
    display: none; position: fixed; top: 68px; left: 0; right: 0;
    background: rgba(10, 14, 39, 0.97); backdrop-filter: blur(20px);
    flex-direction: column; padding: 16px; gap: 4px;
    border-bottom: 1px solid var(--glass-border);
  }
  .nav-links.show { display: flex; }
  .nav-search { display: none; }
  .topnav-inner { grid-template-columns: 1fr auto; }
  .hero-stats { gap: 20px; flex-wrap: wrap; }
  .hero-stats .stat-num { font-size: 1.4rem; }
  .honeycomb { gap: 10px; }
  .hex-card { width: 120px; height: 135px; }
  .hex-icon { font-size: 1.4rem; }
  .hex-label { font-size: 0.75rem; }
  .ai-stack { grid-template-columns: 1fr; }
  .reviews-flow { column-count: 1; }
  .contact-cols { grid-template-columns: 1fr; }
  .expert-detail { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 24px; }
  .vcard { flex: 0 0 260px; }
  .section { padding: 50px 0; }
}
@media (max-width: 480px) {
  .hero-content h1 { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn-glow { width: 100%; justify-content: center; }
  .hex-card { width: 100px; height: 115px; }
  .vgrid { grid-template-columns: 1fr; }
}