/* ============================================
   蘑菇视频 - 主样式文件
   Mogu Video - Main Stylesheet
   ============================================ */

/* ---- CSS变量 ---- */
:root {
  --primary: #7c3aed;
  --primary-dark: #5b21b6;
  --primary-light: #a78bfa;
  --accent: #f59e0b;
  --accent-light: #fcd34d;
  --teal: #0d9488;
  --teal-light: #2dd4bf;
  --dark: #0f0f1a;
  --dark-2: #1a1a2e;
  --dark-3: #16213e;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --card-bg: rgba(255,255,255,0.04);
  --card-border: rgba(255,255,255,0.08);
  --glass: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.12);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(124,58,237,0.3);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-main: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
}

/* ---- 重置 ---- */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; font-size:16px; }
body {
  font-family: var(--font-main);
  background: var(--dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width:100%; height:auto; display:block; }
ul { list-style:none; }
button { cursor:pointer; border:none; outline:none; font-family:inherit; }

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background: var(--dark-2); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius:3px; }

/* ============================================
   布局工具类
   ============================================ */
.container { max-width:1280px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; }
.section-sm { padding:48px 0; }
.grid-2 { display:grid; grid-template-columns:repeat(2,1fr); gap:32px; }
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.grid-4 { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.flex { display:flex; }
.flex-center { display:flex; align-items:center; justify-content:center; }
.flex-between { display:flex; align-items:center; justify-content:space-between; }
.text-center { text-align:center; }
.text-gradient {
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(15,15,26,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border);
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(15,15,26,0.98);
  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}
.nav-logo .logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.nav-logo span { color: var(--text-primary); }
.nav-logo em { color: var(--primary-light); font-style:normal; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--glass);
}

/* 搜索框 */
.nav-search {
  position: relative;
  flex: 1;
  max-width: 280px;
}
.nav-search input {
  width: 100%;
  padding: 9px 16px 9px 40px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  color: var(--text-primary);
  font-size: 0.88rem;
  font-family: var(--font-main);
  transition: var(--transition);
}
.nav-search input::placeholder { color: var(--text-muted); }
.nav-search input:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(124,58,237,0.08);
}
.nav-search .search-icon {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

.nav-cta {
  padding: 9px 22px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(124,58,237,0.5);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  cursor: pointer;
}
.nav-hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* 搜索栏（导航下方） */
.search-bar-wrap {
  background: rgba(15,15,26,0.95);
  border-bottom: 1px solid var(--card-border);
  padding: 12px 0;
  margin-top: 68px;
}
.search-bar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 24px;
}
.search-bar-inner input {
  flex: 1;
  padding: 12px 20px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 32px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font-main);
  transition: var(--transition);
}
.search-bar-inner input::placeholder { color: var(--text-muted); }
.search-bar-inner input:focus {
  outline: none;
  border-color: var(--primary);
}
.search-bar-inner button {
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  border-radius: 32px;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-main);
  transition: var(--transition);
}
.search-bar-inner button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(124,58,237,0.4);
}

/* ============================================
   Hero Banner
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 120px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(124,58,237,0.25) 0%, transparent 70%),
              radial-gradient(ellipse 50% 40% at 80% 50%, rgba(13,148,136,0.15) 0%, transparent 60%),
              var(--dark);
}
.hero-bg-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  filter: blur(2px);
}
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.particle {
  position: absolute;
  border-radius: 50%;
  animation: float-particle linear infinite;
  opacity: 0;
}
@keyframes float-particle {
  0% { transform: translateY(100vh) scale(0); opacity:0; }
  10% { opacity:0.6; }
  90% { opacity:0.3; }
  100% { transform: translateY(-100px) scale(1); opacity:0; }
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 24px;
  font-size: 0.82rem;
  color: var(--primary-light);
  margin-bottom: 24px;
  animation: fade-up 0.6s ease both;
}
.hero-badge .dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease infinite;
}
@keyframes pulse-dot {
  0%,100% { transform:scale(1); opacity:1; }
  50% { transform:scale(1.5); opacity:0.7; }
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
  animation: fade-up 0.7s ease 0.1s both;
}
.hero-desc {
  font-size: 1.12rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 36px;
  animation: fade-up 0.7s ease 0.2s both;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fade-up 0.7s ease 0.3s both;
}
.btn-primary {
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 32px;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(124,58,237,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(124,58,237,0.6);
}
.btn-outline {
  padding: 14px 32px;
  background: transparent;
  border: 1.5px solid var(--glass-border);
  border-radius: 32px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition);
}
.btn-outline:hover {
  border-color: var(--primary-light);
  background: rgba(124,58,237,0.1);
  transform: translateY(-2px);
}
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 56px;
  animation: fade-up 0.7s ease 0.4s both;
}
.hero-stat { text-align:left; }
.hero-stat .num {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.hero-stat .label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ============================================
   Section标题
   ============================================ */
.section-header { margin-bottom: 52px; }
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(124,58,237,0.12);
  border: 1px solid rgba(124,58,237,0.25);
  border-radius: 24px;
  font-size: 0.78rem;
  color: var(--primary-light);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 14px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
}
.section-header.text-center .section-desc { margin: 0 auto; }

/* ============================================
   卡片通用
   ============================================ */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(124,58,237,0.3);
  box-shadow: var(--shadow-glow);
}
.card-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
}
.card-body { padding: 20px; }
.card-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(124,58,237,0.15);
  border-radius: 12px;
  font-size: 0.75rem;
  color: var(--primary-light);
  margin-bottom: 10px;
}
.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}
.card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   视频卡片
   ============================================ */
.video-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-5px);
  border-color: rgba(124,58,237,0.4);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5), var(--shadow-glow);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--dark-3);
}
.video-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.35);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-circle {
  width: 60px; height: 60px;
  background: rgba(124,58,237,0.9);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(8px);
  transform: scale(0.8);
  transition: var(--transition);
  box-shadow: 0 0 30px rgba(124,58,237,0.7);
}
.video-card:hover .play-circle { transform: scale(1); }
.play-circle svg {
  width: 24px; height: 24px;
  fill: #fff;
  margin-left: 3px;
}
.video-duration {
  position: absolute;
  bottom: 8px; right: 10px;
  background: rgba(0,0,0,0.75);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: #fff;
}
.video-meta {
  padding: 14px 16px;
}
.video-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-stats {
  display: flex;
  gap: 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.video-stats span { display:flex; align-items:center; gap:4px; }

/* ============================================
   品牌故事
   ============================================ */
.brand-story {
  background: linear-gradient(180deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark) 100%);
}
.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.story-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.story-img-wrap img {
  width: 100%;
  border-radius: var(--radius-lg);
  display: block;
}
.story-img-wrap::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  border-radius: calc(var(--radius-lg) + 2px);
  z-index: -1;
}
.story-content .section-tag { margin-bottom: 14px; }
.story-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}
.story-value-item {
  padding: 16px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
}
.story-value-item .icon {
  font-size: 1.5rem;
  margin-bottom: 8px;
}
.story-value-item h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.story-value-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   特性/服务
   ============================================ */
.feature-card {
  padding: 28px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.feature-card:hover {
  border-color: rgba(124,58,237,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.feature-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.feature-icon.purple { background: rgba(124,58,237,0.15); }
.feature-icon.teal { background: rgba(13,148,136,0.15); }
.feature-icon.amber { background: rgba(245,158,11,0.15); }
.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================
   统计数字
   ============================================ */
.stats-section {
  background: linear-gradient(135deg, rgba(124,58,237,0.12), rgba(13,148,136,0.08));
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 0;
}
.stat-item {
  padding: 48px 24px;
  text-align: center;
  border-right: 1px solid var(--card-border);
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: 2.8rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}
.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ============================================
   用户评价
   ============================================ */
.testimonial-card {
  padding: 28px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.testimonial-card:hover {
  border-color: rgba(124,58,237,0.3);
  transform: translateY(-3px);
}
.stars {
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}
.testimonial-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  font-style: italic;
}
.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
}
.user-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.user-name {
  font-size: 0.9rem;
  font-weight: 600;
}
.user-title {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================
   FAQ
   ============================================ */
.faq-item {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 12px;
  transition: var(--transition);
}
.faq-item.open { border-color: rgba(124,58,237,0.3); }
.faq-question {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  background: var(--card-bg);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  user-select: none;
}
.faq-question:hover { background: var(--glass); }
.faq-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(124,58,237,0.15);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  font-size: 0.8rem;
  color: var(--primary-light);
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  background: rgba(124,58,237,0.04);
}
.faq-item.open .faq-answer { max-height: 200px; }
.faq-answer-inner {
  padding: 16px 24px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   联系/连接模块
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}
.contact-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(124,58,237,0.12);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-info-item h4 {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.contact-info-item p {
  font-size: 0.95rem;
  font-weight: 500;
}
.map-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--dark-3);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.map-placeholder .map-icon { font-size: 2.5rem; }

/* ============================================
   合作伙伴
   ============================================ */
.partners-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}
.partner-badge {
  padding: 12px 24px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}
.partner-badge:hover {
  border-color: var(--primary-light);
  color: var(--text-primary);
}

/* ============================================
   CTA 横幅
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, rgba(124,58,237,0.2), rgba(13,148,136,0.15));
  border: 1px solid rgba(124,58,237,0.2);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at center, rgba(124,58,237,0.1) 0%, transparent 70%);
  animation: rotate-glow 20s linear infinite;
}
@keyframes rotate-glow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.cta-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
}
.cta-section p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 32px;
  position: relative;
}
.cta-section .btn-primary { position: relative; }

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--dark-2);
  border-top: 1px solid var(--card-border);
  padding: 60px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}
.footer-brand .brand-name {
  font-size: 1.2rem;
  font-weight: 800;
}
.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.social-btn {
  width: 36px; height: 36px;
  border-radius: 9px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: var(--transition);
}
.social-btn:hover {
  background: rgba(124,58,237,0.15);
  border-color: var(--primary);
  color: var(--primary-light);
}
.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--card-border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-qr {
  display: flex;
  gap: 20px;
}
.qr-item {
  text-align: center;
}
.qr-box {
  width: 72px; height: 72px;
  background: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 6px;
  padding: 4px;
}
.qr-box img { width: 100%; height: 100%; }
.qr-label {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ============================================
   动画
   ============================================ */
@keyframes fade-up {
  from { opacity:0; transform:translateY(24px); }
  to { opacity:1; transform:translateY(0); }
}
@keyframes fade-in {
  from { opacity:0; }
  to { opacity:1; }
}
.animate-fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   内页 Hero
   ============================================ */
.page-hero {
  padding: 140px 0 72px;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(124,58,237,0.2) 0%, transparent 70%);
  text-align: center;
}
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  margin-bottom: 16px;
}
.page-hero p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--primary-light); }
.breadcrumb span { color: var(--text-muted); }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .stat-item { border-right: none; border-bottom: 1px solid var(--card-border); }
  .stat-item:nth-child(odd) { border-right: 1px solid var(--card-border); }
  .stat-item:last-child { border-bottom: none; }
}
@media (max-width: 768px) {
  .nav-links { display:none; }
  .nav-search { display:none; }
  .nav-hamburger { display:flex; }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px; left:0; right:0;
    background: rgba(15,15,26,0.98);
    padding: 20px 24px;
    border-bottom: 1px solid var(--card-border);
    gap: 4px;
    z-index: 999;
  }
  .nav-links.mobile-open a { padding: 12px 16px; }
  .grid-2,.grid-3 { grid-template-columns: 1fr; }
  .story-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align:center; }
  .cta-section { padding: 40px 24px; }
  .section { padding: 56px 0; }
  .search-bar-wrap { margin-top: 68px; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .btn-primary,.btn-outline { text-align:center; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-right: none; }
}

/* ============================================
   懒加载图片
   ============================================ */
img[data-src] { opacity:0; transition: opacity 0.4s ease; }
img.loaded { opacity:1; }

/* ============================================
   进度条装饰
   ============================================ */
.progress-bar-wrap { margin: 12px 0; }
.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.progress-track {
  height: 6px;
  background: var(--glass);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--teal));
  transition: width 1s ease;
}