/* 51吃瓜 - 主样式文件 */
/* 高端有机未来主义 · 玻璃态梦幻科技风格 */

:root {
  --bg-primary: #111111;
  --bg-secondary: #1A1A1A;
  --color-cyan: #A0F0FF;
  --color-purple: #D8A0FF;
  --color-warm-white: #F8F0E8;
  --color-text: #E8E8E8;
  --color-text-muted: #999999;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-blur: blur(20px);
  --shadow-glow-cyan: 0 0 30px rgba(160, 240, 255, 0.2);
  --shadow-glow-purple: 0 0 30px rgba(216, 160, 255, 0.2);
  --border-radius: 16px;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background: var(--bg-primary);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

/* 粒子背景 */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* 全局容器 */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* 玻璃态卡片 */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.glass-card:hover {
  border-color: rgba(160, 240, 255, 0.3);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-4px);
}

/* 渐变文字 */
.gradient-text {
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 按钮样式 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  color: #111;
  font-weight: 700;
  font-size: 15px;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-purple), var(--color-cyan));
  opacity: 0;
  transition: var(--transition);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary span {
  position: relative;
  z-index: 1;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  background: transparent;
  color: var(--color-warm-white);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid rgba(248, 240, 232, 0.3);
  border-radius: 50px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  box-shadow: var(--shadow-glow-cyan);
}

/* 章节标题 */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(160, 240, 255, 0.1);
  border: 1px solid rgba(160, 240, 255, 0.3);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-cyan);
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-warm-white);
}

.section-subtitle {
  font-size: 17px;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  background: rgba(17, 17, 17, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 900;
  color: #111;
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.navbar-nav a {
  display: block;
  padding: 8px 14px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--color-cyan);
  background: rgba(160, 240, 255, 0.08);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* 搜索框 */
.search-bar-wrapper {
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid var(--glass-border);
  padding: 12px 0;
  position: sticky;
  top: 73px;
  z-index: 900;
  backdrop-filter: blur(20px);
}

.search-bar-inner {
  display: flex;
  align-items: center;
  max-width: 640px;
  margin: 0 auto;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  padding: 10px 20px;
  gap: 12px;
  transition: var(--transition);
}

.search-bar-inner:focus-within {
  border-color: rgba(160, 240, 255, 0.4);
  box-shadow: 0 0 20px rgba(160, 240, 255, 0.1);
}

.search-bar-inner input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--color-text);
  font-size: 14px;
}

.search-bar-inner input::placeholder {
  color: var(--color-text-muted);
}

.search-bar-inner .search-icon {
  color: var(--color-text-muted);
  font-size: 16px;
}

/* Hero Banner */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.25;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17,17,17,0.3) 0%, rgba(17,17,17,0.9) 100%);
}

.hero-orb-1 {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(160,240,255,0.12) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero-orb-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(216,160,255,0.1) 0%, transparent 70%);
  bottom: 0;
  left: -80px;
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(160, 240, 255, 0.08);
  border: 1px solid rgba(160, 240, 255, 0.25);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-cyan);
  margin-bottom: 28px;
  letter-spacing: 1px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-cyan);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 12px;
  color: var(--color-warm-white);
}

.hero-subtitle {
  font-size: clamp(22px, 3vw, 36px);
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 17px;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 60px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: left;
}

.hero-stat-num {
  font-size: 32px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* 视频卡片 */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.video-card:hover {
  border-color: rgba(160, 240, 255, 0.3);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-6px);
}

.video-thumb {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  overflow: hidden;
  background: #1a1a2e;
}

.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.06);
}

.video-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0);
  transition: var(--transition);
}

.video-card:hover .video-play-overlay {
  background: rgba(0, 0, 0, 0.4);
}

.video-play-btn {
  width: 60px;
  height: 60px;
  background: rgba(160, 240, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(160, 240, 255, 0.5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.8);
  transition: var(--transition);
}

.video-card:hover .video-play-btn {
  opacity: 1;
  transform: scale(1);
}

.video-play-btn::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--color-cyan);
  margin-left: 4px;
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}

.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  color: #111;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
}

.video-info {
  padding: 16px;
}

.video-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-warm-white);
  margin-bottom: 10px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.video-meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* 社区模块 */
.community-section {
  padding: 100px 0;
}

.danmaku-container {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 24px;
  overflow: hidden;
  height: 120px;
  position: relative;
  margin-bottom: 40px;
}

.danmaku-track {
  position: absolute;
  white-space: nowrap;
  animation: danmaku-scroll 20s linear infinite;
  display: flex;
  gap: 40px;
  align-items: center;
}

.danmaku-track:nth-child(2) {
  top: 50px;
  animation-delay: -10s;
  animation-duration: 25s;
}

@keyframes danmaku-scroll {
  from { transform: translateX(100vw); }
  to { transform: translateX(-100%); }
}

.danmaku-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-text);
  white-space: nowrap;
}

/* AI模块 */
.ai-features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.ai-feature-card {
  padding: 32px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.ai-feature-card:hover {
  border-color: rgba(216, 160, 255, 0.4);
  box-shadow: var(--shadow-glow-purple);
  transform: translateY(-4px);
}

.ai-feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(160,240,255,0.15), rgba(216,160,255,0.15));
  border: 1px solid rgba(160,240,255,0.2);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.ai-feature-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-warm-white);
  margin-bottom: 10px;
}

.ai-feature-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* 专家模块 */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.expert-card {
  padding: 32px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  text-align: center;
  transition: var(--transition);
}

.expert-card:hover {
  border-color: rgba(160, 240, 255, 0.3);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-4px);
}

.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  margin: 0 auto 16px;
  overflow: hidden;
  border: 2px solid rgba(160,240,255,0.3);
}

.expert-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.expert-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-warm-white);
  margin-bottom: 6px;
}

.expert-role {
  font-size: 13px;
  color: var(--color-cyan);
  margin-bottom: 12px;
}

.expert-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* 用户评价 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.review-card {
  padding: 28px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(216, 160, 255, 0.3);
  box-shadow: var(--shadow-glow-purple);
}

.review-stars {
  color: #FFD700;
  font-size: 16px;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #111;
  flex-shrink: 0;
}

.review-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-warm-white);
}

.review-date {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: rgba(160, 240, 255, 0.3);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-warm-white);
  gap: 16px;
}

.faq-icon {
  width: 24px;
  height: 24px;
  border: 1px solid rgba(160,240,255,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cyan);
  font-size: 16px;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: rgba(160,240,255,0.1);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--glass-border);
  padding-top: 16px;
}

/* 合作伙伴 */
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.partner-logo {
  padding: 16px 32px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-muted);
  transition: var(--transition);
  cursor: default;
}

.partner-logo:hover {
  color: var(--color-cyan);
  border-color: rgba(160,240,255,0.3);
}

/* 联系模块 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

.contact-card {
  padding: 32px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  text-align: center;
}

.contact-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.contact-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-warm-white);
  margin-bottom: 8px;
}

.contact-value {
  font-size: 14px;
  color: var(--color-text-muted);
}

/* 页脚 */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--glass-border);
  padding: 60px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-top: 16px;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 16px;
  transition: var(--transition);
}

.footer-social a:hover {
  color: var(--color-cyan);
  border-color: rgba(160,240,255,0.3);
}

.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-warm-white);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-cyan);
}

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 13px;
  color: var(--color-text-muted);
}

.footer-icp {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* 章节间距 */
section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

/* 移动端适配 */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }
  .hero-stats {
    gap: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .video-grid {
    grid-template-columns: 1fr;
  }
  .experts-grid {
    grid-template-columns: 1fr 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  section {
    padding: 60px 0;
  }
}

@media (max-width: 480px) {
  .experts-grid {
    grid-template-columns: 1fr;
  }
  .ai-features {
    grid-template-columns: 1fr;
  }
}

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
}

/* 加载动画 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 分隔线 */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
  margin: 0;
}

/* 话题标签 */
.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.topic-tag {
  padding: 8px 18px;
  background: rgba(216,160,255,0.08);
  border: 1px solid rgba(216,160,255,0.2);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-purple);
  cursor: pointer;
  transition: var(--transition);
}

.topic-tag:hover {
  background: rgba(216,160,255,0.15);
  border-color: rgba(216,160,255,0.4);
}

/* 内页Banner */
.inner-hero {
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.inner-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}

.inner-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17,17,17,0.5) 0%, rgba(17,17,17,1) 100%);
}

.inner-hero-content {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.breadcrumb a:hover {
  color: var(--color-cyan);
}

.breadcrumb-sep {
  color: var(--color-text-muted);
}