/* ========================================
   里番网 - 主样式文件
   品牌色: 深紫 #1A0533 | 电紫 #7C3AED | 蓝紫 #4F46E5 | 亮蓝 #3B82F6
   ======================================== */

/* === 全局重置 === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --brand-dark:   #0D0820;
  --brand-deep:   #1A0533;
  --brand-purple: #7C3AED;
  --brand-blue:   #4F46E5;
  --brand-light:  #3B82F6;
  --brand-pink:   #EC4899;
  --brand-cyan:   #06B6D4;
  --text-primary: #F1F0F5;
  --text-secondary: #B8B0CC;
  --text-muted:   #6B6480;
  --card-bg:      #160D2E;
  --card-border:  rgba(124,58,237,0.25);
  --gradient-hero: linear-gradient(135deg, #0D0820 0%, #1A0533 40%, #0F1A40 100%);
  --gradient-card: linear-gradient(145deg, #1E1040, #0D1A3A);
  --gradient-btn:  linear-gradient(90deg, #7C3AED, #4F46E5);
  --shadow-glow:  0 0 30px rgba(124,58,237,0.35);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

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

a { color: var(--brand-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--brand-purple); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* === 滚动条 === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--brand-dark); }
::-webkit-scrollbar-thumb { background: var(--brand-purple); border-radius: 3px; }

/* === 容器 === */
.container { max-width: 1240px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-sm { padding: 50px 0; }

/* === 标题系统 === */
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
  background: linear-gradient(90deg, #fff 0%, #C4B5FD 50%, #93C5FD 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 48px;
}
.section-title span { color: var(--brand-purple); -webkit-text-fill-color: var(--brand-purple); }

/* === 按钮 === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--gradient-btn);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124,58,237,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124,58,237,0.6);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--brand-purple);
  border: 2px solid var(--brand-purple);
}
.btn-outline:hover {
  background: var(--brand-purple);
  color: #fff;
  transform: translateY(-2px);
}
.btn-sm { padding: 8px 18px; font-size: 0.85rem; }

/* === 徽章 === */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.60w2b3f { background: linear-gradient(90deg,#EC4899,#F97316); color:#fff; }
.3jsl3 { background: linear-gradient(90deg,#06B6D4,#3B82F6); color:#fff; }
.9e9uieu  { background: linear-gradient(90deg,#7C3AED,#4F46E5); color:#fff; }

/* ========================================
   顶部导航
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,8,32,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(124,58,237,0.2);
  transition: all var(--transition);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-wrap img { height: 42px; width: auto; }
.logo-text {
  font-size: 1.4rem;
  font-weight: 900;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

/* 主导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: #fff;
  background: rgba(124,58,237,0.2);
}

/* 搜索框 */
.search-wrap {
  position: relative;
  flex: 0 1 280px;
}
.search-wrap input {
  width: 100%;
  padding: 9px 16px 9px 40px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 50px;
  color: var(--text-primary);
  font-size: 0.88rem;
  outline: none;
  transition: all var(--transition);
}
.search-wrap input::placeholder { color: var(--text-muted); }
.search-wrap input:focus {
  border-color: var(--brand-purple);
  background: rgba(124,58,237,0.1);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.15);
}
.search-wrap .search-icon {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}
.search-btn-fake {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--gradient-btn);
  border: none;
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
}
.search-btn-fake:hover { opacity: 0.85; }

/* 汉堡菜单 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* 搜索结果提示 */
.search-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 12px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  z-index: 100;
  box-shadow: var(--shadow-glow);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--gradient-hero);
}
.m6lmxg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}
.z2vem5pp {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,8,32,0.95) 40%, rgba(13,8,32,0.3) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}
.oq8yb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(124,58,237,0.2);
  border: 1px solid rgba(124,58,237,0.4);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 0.85rem;
  color: #C4B5FD;
  margin-bottom: 20px;
}
.oq8yb::before { content: '▶'; font-size: 0.7rem; }
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.hero h1 .highlight {
  background: linear-gradient(90deg, #7C3AED, #3B82F6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 520px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 52px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 900;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat-label { font-size: 0.82rem; color: var(--text-muted); margin-top: 2px; }

/* ========================================
   动漫视频卡片
   ======================================== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--gradient-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  border-color: var(--brand-purple);
  box-shadow: var(--shadow-glow);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.vu5f7yd6 {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: background var(--transition);
}
.video-card:hover .vu5f7yd6 { background: rgba(0,0,0,0.45); }
.lk3ettt {
  width: 58px;
  height: 58px;
  background: rgba(124,58,237,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.7);
  transition: all var(--transition);
  box-shadow: 0 0 24px rgba(124,58,237,0.8);
}
.lk3ettt::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
.video-card:hover .lk3ettt { opacity: 1; transform: scale(1); }
.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-meta { padding: 16px; }
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.video-tag {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(124,58,237,0.2);
  color: #C4B5FD;
  border: 1px solid rgba(124,58,237,0.3);
}
.video-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-stats {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.video-stats span { display: flex; align-items: center; gap: 4px; }

/* ========================================
   功能模块区
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  transition: all var(--transition);
}
.feature-card:hover {
  border-color: var(--brand-purple);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(124,58,237,0.3), rgba(79,70,229,0.2));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}
.feature-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.feature-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }

/* ========================================
   AI 赋能区
   ======================================== */
.ai-section { background: linear-gradient(135deg, #0D0820 0%, #0F1A40 100%); }
.ai-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.ai-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-glow); }
.ai-image img { width: 100%; }
.ai-content h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}
.ai-content p { color: var(--text-secondary); margin-bottom: 28px; }
.ai-list { margin-bottom: 32px; }
.ai-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 0.92rem;
  color: var(--text-secondary);
}
.ai-list li::before {
  content: '✦';
  color: var(--brand-purple);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========================================
   专家展示
   ======================================== */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--gradient-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: all var(--transition);
}
.expert-card:hover {
  border-color: var(--brand-purple);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  margin: 0 auto 16px;
  overflow: hidden;
  border: 3px solid var(--brand-purple);
  box-shadow: 0 0 20px rgba(124,58,237,0.4);
}
.expert-avatar img { width: 100%; height: 100%; object-fit: cover; }
.expert-name { font-size: 1.1rem; font-weight: 800; margin-bottom: 4px; }
.expert-role { font-size: 0.82rem; color: var(--brand-purple); margin-bottom: 12px; font-weight: 600; }
.expert-bio { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.6; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 16px; }
.expert-award {
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.3);
  color: #C4B5FD;
}
.expert-actions { display: flex; gap: 10px; justify-content: center; }

/* ========================================
   社区功能
   ======================================== */
.community-section {
  position: relative;
  overflow: hidden;
}
.community-bg-img {
  position: absolute;
  inset: 0;
  background-image: url('../images/community-bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  z-index: 0;
}
.community-section .container { position: relative; z-index: 1; }
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.community-item {
  background: rgba(22,13,46,0.85);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px 18px;
  text-align: center;
  transition: all var(--transition);
  backdrop-filter: blur(8px);
}
.community-item:hover {
  border-color: var(--brand-pink);
  box-shadow: 0 0 24px rgba(236,72,153,0.25);
  transform: translateY(-4px);
}
.community-icon { font-size: 2.2rem; margin-bottom: 12px; }
.community-title { font-size: 0.95rem; font-weight: 700; margin-bottom: 6px; }
.community-desc { font-size: 0.8rem; color: var(--text-muted); }

/* ========================================
   合作品牌 Logo 墙
   ======================================== */
.partners-section { background: rgba(255,255,255,0.02); }
.partners-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-logo {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 14px 24px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: all var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-logo:hover {
  background: rgba(124,58,237,0.15);
  border-color: var(--brand-purple);
  color: var(--text-primary);
}

/* ========================================
   用户评价
   ======================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--gradient-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition);
}
.review-card:hover {
  border-color: rgba(124,58,237,0.5);
  transform: translateY(-3px);
}
.review-header { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.reviewer-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.reviewer-name { font-weight: 700; font-size: 0.95rem; }
.reviewer-tag { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }
.review-stars { color: #F59E0B; font-size: 0.9rem; margin-bottom: 10px; }
.review-text { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }
.review-date { font-size: 0.75rem; color: var(--text-muted); margin-top: 12px; }

/* ========================================
   FAQ
   ======================================== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--brand-purple); }
.faq-question {
  width: 100%;
  background: var(--gradient-card);
  border: none;
  padding: 18px 22px;
  text-align: left;
  color: var(--text-primary);
  font-size: 0.97rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: background var(--transition);
}
.faq-question:hover { background: rgba(124,58,237,0.15); }
.faq-arrow {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(124,58,237,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.8rem;
  transition: transform var(--transition);
}
.faq-item.open .faq-arrow { transform: rotate(180deg); background: var(--brand-purple); }
.faq-answer {
  display: none;
  padding: 0 22px 18px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
  background: rgba(124,58,237,0.05);
}
.faq-item.open .faq-answer { display: block; }

/* ========================================
   联系我们
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info-block {
  background: var(--gradient-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.contact-info-block h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 20px; }
.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 0.9rem;
}
.contact-row:last-child { border-bottom: none; }
.contact-icon {
  width: 36px;
  height: 36px;
  background: rgba(124,58,237,0.2);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-label { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 2px; }
.contact-value { color: var(--text-primary); font-weight: 500; }
.qr-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.qr-item { text-align: center; }
.qr-item img { width: 130px; height: 130px; border-radius: var(--radius-md); margin: 0 auto 8px; }
.qr-label { font-size: 0.82rem; color: var(--text-secondary); }

/* ========================================
   How-To 加入社区
   ======================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  counter-reset: step;
}
.step-card {
  background: var(--gradient-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  position: relative;
  transition: all var(--transition);
  counter-increment: step;
}
.step-card:hover { border-color: var(--brand-purple); transform: translateY(-4px); }
.step-num {
  width: 44px;
  height: 44px;
  background: var(--gradient-btn);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
}
.step-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.step-desc { font-size: 0.85rem; color: var(--text-secondary); }

/* ========================================
   分享栏
   ======================================== */
.share-bar {
  background: rgba(124,58,237,0.08);
  border: 1px solid rgba(124,58,237,0.2);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.share-label { font-weight: 700; font-size: 0.95rem; white-space: nowrap; }
.share-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  color: #fff;
}
.share-btn:hover { transform: translateY(-2px); opacity: 0.9; }
.share-wechat { background: #07C160; }
.share-weibo  { background: #E6162D; }
.share-douyin { background: #010101; border: 1px solid #333; }
.share-bilibili { background: #00A1D6; }

/* ========================================
   页脚
   ======================================== */
.site-footer {
  background: #080514;
  border-top: 1px solid rgba(124,58,237,0.2);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .logo-wrap { margin-bottom: 16px; }
.footer-brand p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.8; max-width: 280px; }
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(124,58,237,0.2);
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 0.85rem; color: var(--text-muted); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--brand-purple); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-logo-wrap { display: flex; align-items: center; gap: 8px; }
.footer-logo-wrap img { height: 32px; }
.footer-qr-row { display: flex; gap: 24px; align-items: flex-start; margin-top: 20px; }
.footer-qr { text-align: center; }
.footer-qr img { width: 80px; height: 80px; border-radius: 8px; margin-bottom: 6px; }
.footer-qr span { font-size: 0.75rem; color: var(--text-muted); display: block; }

/* ========================================
   面包屑
   ======================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 16px 0;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--brand-purple); }
.breadcrumb .sep { color: rgba(255,255,255,0.2); }
.breadcrumb .current { color: var(--text-secondary); }

/* ========================================
   内页 Banner
   ======================================== */
.page-hero {
  background: linear-gradient(135deg, #1A0533 0%, #0F1A40 100%);
  padding: 60px 0 50px;
  border-bottom: 1px solid rgba(124,58,237,0.2);
}
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  margin-bottom: 12px;
}
.page-hero p { color: var(--text-secondary); font-size: 1rem; max-width: 600px; }

/* ========================================
   标签筛选
   ======================================== */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.filter-btn {
  padding: 7px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid rgba(124,58,237,0.3);
  background: transparent;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--brand-purple);
  border-color: var(--brand-purple);
  color: #fff;
}

/* ========================================
   工具卡片
   ======================================== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.tool-card {
  background: var(--gradient-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition);
}
.tool-card:hover {
  border-color: var(--brand-cyan);
  box-shadow: 0 0 24px rgba(6,182,212,0.2);
  transform: translateY(-4px);
}
.tool-icon { font-size: 2rem; margin-bottom: 14px; }
.tool-name { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.tool-desc { font-size: 0.83rem; color: var(--text-secondary); margin-bottom: 16px; }

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ai-inner { grid-template-columns: 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(13,8,32,0.98);
    padding: 20px;
    border-bottom: 1px solid rgba(124,58,237,0.2);
    z-index: 999;
    gap: 4px;
  }
  .main-nav.open a { padding: 12px 16px; border-radius: var(--radius-sm); }
  .menu-toggle { display: flex; }
  .search-wrap { flex: 0 1 200px; }
  .hero { min-height: 70vh; }
  .hero-stats { gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { padding: 50px 0; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.9rem; }
  .hero-actions { flex-direction: column; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .search-wrap { display: none; }
  .share-bar { flex-direction: column; align-items: flex-start; }
  .qr-grid { grid-template-columns: 1fr 1fr; }
}

/* ========================================
   动画
   ======================================== */
@keyframes spamdmi {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes jx183vih {
  0%, 100% { box-shadow: 0 0 20px rgba(124,58,237,0.3); }
  50%       { box-shadow: 0 0 40px rgba(124,58,237,0.6); }
}
.rrk7mrr { animation: spamdmi 0.6s ease forwards; }
.qkkekkp3 { animation: jx183vih 3s ease-in-out infinite; }

/* 懒加载占位 */
img[loading="lazy"] { background: var(--card-bg); }

/* 打印 */
@media print { .site-header, .site-footer, .share-bar { display: none; } }