/* ===== 蘑菇视频 - 主样式文件 ===== */
:root {
  --primary: #7c3aed;
  --primary-light: #a855f7;
  --secondary: #06b6d4;
  --accent: #10b981;
  --dark: #0f0f1a;
  --dark2: #1a1a2e;
  --dark3: #16213e;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --card-bg: rgba(255,255,255,0.05);
  --border: rgba(255,255,255,0.1);
  --gradient: linear-gradient(135deg, #7c3aed, #06b6d4);
  --gradient2: linear-gradient(135deg, #a855f7, #10b981);
  --shadow: 0 20px 60px rgba(124,58,237,0.3);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark2); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ===== 顶部导航 ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(15,15,26,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  transition: var(--transition);
}
.navbar.scrolled { background: rgba(15,15,26,0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; font-size: 1.4rem; font-weight: 800;
  background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-brand .logo-icon { width: 36px; height: 36px; }
.nav-links { display: flex; align-items: center; gap: 8px; list-style: none; }
.nav-links a {
  color: var(--text-muted); text-decoration: none; padding: 8px 14px;
  border-radius: var(--radius-sm); font-size: 0.92rem; font-weight: 500;
  transition: var(--transition); white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active {
  color: #fff; background: rgba(124,58,237,0.2);
}
.nav-cta {
  background: var(--gradient); color: #fff !important;
  padding: 8px 20px !important; border-radius: 20px !important;
  font-weight: 600 !important;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(124,58,237,0.4); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

/* ===== 搜索框 ===== */
.search-bar {
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex; justify-content: center;
  margin-top: 64px;
}
.search-inner {
  display: flex; align-items: center; gap: 0;
  max-width: 600px; width: 100%;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-radius: 30px; overflow: hidden;
  transition: var(--transition);
}
.search-inner:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124,58,237,0.2); }
.search-inner input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text); padding: 10px 20px; font-size: 0.95rem;
}
.search-inner input::placeholder { color: var(--text-muted); }
.search-btn {
  background: var(--gradient); border: none; color: #fff;
  padding: 10px 22px; cursor: pointer; font-size: 0.9rem;
  font-weight: 600; transition: var(--transition);
}
.search-btn:hover { opacity: 0.9; }

/* ===== 首屏Hero ===== */
.hero {
  min-height: 100vh; position: relative; display: flex; align-items: center;
  overflow: hidden; padding: 80px 24px 60px;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(135deg, #0f0f1a 0%, #1a0a2e 50%, #0a1628 100%);
}
.hero-bg img {
  width: 100%; height: 100%; object-fit: cover; opacity: 0.25;
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(to bottom, rgba(15,15,26,0.4) 0%, rgba(15,15,26,0.7) 100%);
}
.hero-particles {
  position: absolute; inset: 0; z-index: 1; overflow: hidden;
}
.particle {
  position: absolute; border-radius: 50%;
  background: var(--primary-light); opacity: 0.15;
  animation: float-particle linear infinite;
}
@keyframes float-particle {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 0.15; }
  90% { opacity: 0.15; }
  100% { transform: translateY(-100px) scale(1); opacity: 0; }
}
.hero-content {
  position: relative; z-index: 2; max-width: 1200px; margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.hero-text { animation: fadeInLeft 0.8s ease both; }
@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-40px); } to { opacity: 1; transform: translateX(0); } }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(124,58,237,0.2); border: 1px solid rgba(124,58,237,0.4);
  color: var(--primary-light); padding: 6px 16px; border-radius: 20px;
  font-size: 0.85rem; font-weight: 600; margin-bottom: 24px;
  animation: pulse-badge 2s ease-in-out infinite;
}
@keyframes pulse-badge { 0%,100% { box-shadow: 0 0 0 0 rgba(124,58,237,0.4); } 50% { box-shadow: 0 0 0 8px rgba(124,58,237,0); } }
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 900; line-height: 1.15;
  margin-bottom: 20px; letter-spacing: -0.02em;
}
.hero h1 .brand-name {
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-desc { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 32px; max-width: 480px; }
.hero-stats {
  display: flex; gap: 32px; margin-bottom: 36px;
}
.stat-item { text-align: center; }
.stat-num { font-size: 1.8rem; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  background: var(--gradient); color: #fff; border: none;
  padding: 14px 32px; border-radius: 30px; font-size: 1rem; font-weight: 700;
  cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
  transition: var(--transition); box-shadow: 0 8px 30px rgba(124,58,237,0.4);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 15px 40px rgba(124,58,237,0.5); }
.btn-outline {
  background: transparent; color: var(--text); border: 2px solid var(--border);
  padding: 12px 28px; border-radius: 30px; font-size: 1rem; font-weight: 600;
  cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
  transition: var(--transition);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary-light); transform: translateY(-2px); }
.hero-visual { animation: fadeInRight 0.8s ease 0.2s both; }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
.hero-video-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
  border: 1px solid var(--border);
}
.hero-video-card img { width: 100%; display: block; }
.hero-play-btn {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 72px; height: 72px; border-radius: 50%;
  background: rgba(124,58,237,0.85); backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: var(--transition);
  animation: pulse-play 2s ease-in-out infinite;
}
@keyframes pulse-play { 0%,100% { box-shadow: 0 0 0 0 rgba(124,58,237,0.6); } 50% { box-shadow: 0 0 0 20px rgba(124,58,237,0); } }
.hero-play-btn:hover { transform: translate(-50%,-50%) scale(1.1); background: var(--primary); }
.hero-play-btn svg { width: 28px; height: 28px; fill: #fff; margin-left: 4px; }

/* ===== 通用 Section ===== */
.section { padding: 80px 24px; }
.section-alt { background: var(--dark2); }
.container { max-width: 1200px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block; background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.3); color: var(--primary-light);
  padding: 4px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 600;
  margin-bottom: 12px; letter-spacing: 0.05em; text-transform: uppercase;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 800;
  margin-bottom: 16px; letter-spacing: -0.02em;
}
.section-title .highlight {
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.section-desc { color: var(--text-muted); font-size: 1.05rem; max-width: 560px; margin: 0 auto; }

/* ===== 卡片通用 ===== */
.card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: var(--transition); position: relative;
}
.card:hover { transform: translateY(-8px); border-color: rgba(124,58,237,0.4); box-shadow: var(--shadow); }
.card-img { width: 100%; height: 200px; object-fit: cover; display: block; }
.card-body { padding: 20px; }
.card-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.card-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }

/* ===== 视频卡片 ===== */
.video-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: var(--transition); cursor: pointer; position: relative;
}
.video-card:hover { transform: translateY(-8px); border-color: rgba(124,58,237,0.4); box-shadow: var(--shadow); }
.video-thumb {
  position: relative; overflow: hidden; aspect-ratio: 16/9;
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s ease; }
.video-card:hover .video-thumb img { transform: scale(1.08); }
.video-play-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.3);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: var(--transition);
}
.video-card:hover .video-play-overlay { opacity: 1; }
.video-play-btn {
  width: 60px; height: 60px; border-radius: 50%;
  background: rgba(124,58,237,0.9); backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  transform: scale(0.8); transition: var(--transition);
}
.video-card:hover .video-play-btn { transform: scale(1); }
.video-play-btn svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  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; font-weight: 600;
}
.video-category {
  position: absolute; top: 8px; left: 8px;
  background: var(--primary); color: #fff;
  padding: 3px 10px; border-radius: 4px; font-size: 0.75rem; font-weight: 600;
}
.video-meta { padding: 16px; }
.video-title { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.video-stats { display: flex; gap: 16px; font-size: 0.8rem; color: var(--text-muted); }
.video-stats span { display: flex; align-items: center; gap: 4px; }

/* ===== 品牌故事 ===== */
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.story-text h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; margin-bottom: 20px; }
.story-text p { color: var(--text-muted); margin-bottom: 16px; line-height: 1.8; }
.story-milestones { display: flex; flex-direction: column; gap: 20px; margin-top: 32px; }
.milestone { display: flex; gap: 16px; align-items: flex-start; }
.milestone-year {
  min-width: 60px; font-size: 0.85rem; font-weight: 700;
  color: var(--primary-light); padding-top: 2px;
}
.milestone-content h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.milestone-content p { font-size: 0.85rem; color: var(--text-muted); }
.story-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.story-img img { width: 100%; display: block; }

/* ===== 探索模块 ===== */
.explore-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.explore-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; transition: var(--transition);
}
.explore-card:hover { transform: translateY(-8px); border-color: rgba(124,58,237,0.4); box-shadow: var(--shadow); }
.explore-card img { width: 100%; height: 220px; object-fit: cover; display: block; }
.explore-body { padding: 24px; }
.explore-icon { font-size: 2rem; margin-bottom: 12px; }
.explore-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.explore-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }
.explore-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--primary-light); font-size: 0.88rem; font-weight: 600;
  text-decoration: none; margin-top: 14px; transition: var(--transition);
}
.explore-link:hover { gap: 10px; }

/* ===== 视频列表 ===== */
.video-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ===== 品牌创造 ===== */
.create-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.create-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; transition: var(--transition);
  display: grid; grid-template-columns: 1fr 1fr;
}
.create-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(124,58,237,0.4); }
.create-card img { width: 100%; height: 100%; object-fit: cover; display: block; min-height: 200px; }
.create-body { padding: 24px; display: flex; flex-direction: column; justify-content: center; }
.create-tag {
  display: inline-block; background: rgba(124,58,237,0.2); color: var(--primary-light);
  padding: 3px 10px; border-radius: 4px; font-size: 0.78rem; font-weight: 600;
  margin-bottom: 12px;
}
.create-title { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.create-desc { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }

/* ===== 品牌灵感 ===== */
.inspire-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.inspire-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; transition: var(--transition);
}
.inspire-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: rgba(6,182,212,0.4); }
.inspire-card img { width: 100%; height: 180px; object-fit: cover; display: block; }
.inspire-body { padding: 20px; }
.inspire-date { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 8px; }
.inspire-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.inspire-excerpt { font-size: 0.87rem; color: var(--text-muted); line-height: 1.6; }

/* ===== 用户评价 ===== */
.reviews-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.review-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px; transition: var(--transition);
}
.review-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(124,58,237,0.4); }
.review-stars { color: #f59e0b; font-size: 1rem; margin-bottom: 12px; letter-spacing: 2px; }
.review-text { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--gradient); display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 700; color: #fff; flex-shrink: 0;
}
.review-name { font-size: 0.9rem; font-weight: 700; }
.review-role { font-size: 0.78rem; color: var(--text-muted); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); overflow: hidden; transition: var(--transition);
}
.faq-item.active { border-color: rgba(124,58,237,0.4); }
.faq-q {
  padding: 18px 24px; font-size: 0.98rem; font-weight: 600;
  cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  transition: var(--transition); user-select: none;
}
.faq-q:hover { color: var(--primary-light); }
.faq-icon { font-size: 1.2rem; transition: var(--transition); color: var(--primary-light); }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-a {
  padding: 0 24px; max-height: 0; overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 0.9rem; color: var(--text-muted); line-height: 1.8;
}
.faq-item.active .faq-a { max-height: 200px; padding: 0 24px 18px; }

/* ===== 品牌连接 ===== */
.connect-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.connect-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 24px; text-align: center; transition: var(--transition);
}
.connect-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: rgba(124,58,237,0.4); }
.connect-icon {
  width: 64px; height: 64px; border-radius: 50%; margin: 0 auto 20px;
  background: var(--gradient); display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
}
.connect-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.connect-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }

/* ===== 联系模块 ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 24px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 20px; }
.contact-icon {
  width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
  background: rgba(124,58,237,0.2); display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.contact-label { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 4px; }
.contact-value { font-size: 0.95rem; font-weight: 600; }
.map-placeholder {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); height: 300px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 0.9rem; margin-top: 24px;
  position: relative; overflow: hidden;
}
.map-placeholder::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(124,58,237,0.05), rgba(6,182,212,0.05));
}
.qr-section { display: flex; gap: 24px; margin-top: 24px; }
.qr-item { text-align: center; }
.qr-box {
  width: 100px; height: 100px; background: #fff; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 8px; font-size: 0.7rem; color: #333;
  padding: 8px;
}
.qr-label { font-size: 0.8rem; color: var(--text-muted); }

/* ===== 页脚 ===== */
.footer {
  background: var(--dark2); border-top: 1px solid var(--border);
  padding: 60px 24px 24px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand { }
.footer-logo {
  font-size: 1.5rem; font-weight: 800;
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 12px;
}
.footer-desc { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }
.social-links { display: flex; gap: 10px; }
.social-link {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--card-bg); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); text-decoration: none; font-size: 1rem;
  transition: var(--transition);
}
.social-link:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-col h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 16px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.88rem; transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-copy { font-size: 0.82rem; color: var(--text-muted); }
.footer-icp { font-size: 0.82rem; color: var(--text-muted); }
.footer-icp a { color: var(--text-muted); text-decoration: none; }
.footer-icp a:hover { color: var(--primary-light); }

/* ===== 合作伙伴 ===== */
.partners-row { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; align-items: center; }
.partner-item {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 16px 28px;
  font-size: 0.9rem; font-weight: 600; color: var(--text-muted);
  transition: var(--transition);
}
.partner-item:hover { border-color: var(--primary); color: var(--text); }

/* ===== 数字统计 ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 24px; text-align: center;
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.stat-card .stat-num { font-size: 2.5rem; font-weight: 900; display: block; margin-bottom: 8px; }
.stat-card .stat-label { font-size: 0.9rem; color: var(--text-muted); }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 16px 24px; background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border);
}
.breadcrumb-inner { max-width: 1200px; margin: 0 auto; display: flex; gap: 8px; align-items: center; font-size: 0.85rem; }
.breadcrumb-inner a { color: var(--text-muted); text-decoration: none; transition: var(--transition); }
.breadcrumb-inner a:hover { color: var(--primary-light); }
.breadcrumb-inner span { color: var(--text-muted); }
.breadcrumb-inner .current { color: var(--text); }

/* ===== 内页Banner ===== */
.page-banner {
  padding: 80px 24px 60px; text-align: center;
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(6,182,212,0.1));
  border-bottom: 1px solid var(--border);
  margin-top: 64px;
}
.page-banner h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 16px; }
.page-banner p { color: var(--text-muted); font-size: 1.05rem; max-width: 560px; margin: 0 auto; }

/* ===== 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); }
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--dark2); border-bottom: 1px solid var(--border); padding: 16px; gap: 4px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .story-grid { grid-template-columns: 1fr; }
  .explore-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .create-grid { grid-template-columns: 1fr; }
  .create-card { grid-template-columns: 1fr; }
  .inspire-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .connect-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: 20px; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
}

/* ===== 加载动画 ===== */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.05) 25%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.05) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* ===== 标签 ===== */
.tag {
  display: inline-block; padding: 3px 10px; border-radius: 4px;
  font-size: 0.75rem; font-weight: 600; margin-right: 6px; margin-bottom: 6px;
}
.tag-video { background: rgba(124,58,237,0.2); color: var(--primary-light); }
.tag-tutorial { background: rgba(6,182,212,0.2); color: var(--secondary); }
.tag-life { background: rgba(16,185,129,0.2); color: var(--accent); }

/* ===== 返回顶部 ===== */
.back-top {
  position: fixed; bottom: 30px; right: 30px; z-index: 999;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--gradient); border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 25px rgba(124,58,237,0.4);
  opacity: 0; transform: translateY(20px); transition: var(--transition);
  pointer-events: none;
}
.back-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-top:hover { transform: translateY(-3px); }
.back-top svg { width: 18px; height: 18px; fill: #fff; }