/* ===== 51吃瓜 全站样式 ===== */
:root {
  --primary: #7c3aed;
  --primary-light: #a78bfa;
  --accent: #06b6d4;
  --accent2: #f59e0b;
  --dark: #0f0f1a;
  --dark2: #1a1a2e;
  --dark3: #16213e;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --white: #ffffff;
  --card-bg: rgba(255,255,255,0.05);
  --border: rgba(255,255,255,0.1);
  --gradient: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
  --gradient2: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --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; font-size: 16px; }

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 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 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(15,15,26,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.logo-icon {
  width: 40px; height: 40px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 900; color: #fff;
  box-shadow: 0 4px 15px rgba(124,58,237,0.4);
}

.logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.main-nav { display: flex; align-items: center; gap: 4px; }

.main-nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

.main-nav a:hover, .main-nav a.active {
  color: var(--white);
  background: var(--card-bg);
}

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: var(--dark2);
  border-bottom: 1px solid var(--border);
  padding: 10px 24px;
  display: flex;
  justify-content: center;
}

.search-bar-inner {
  max-width: 640px;
  width: 100%;
  display: flex;
  gap: 0;
  position: relative;
}

.search-bar-inner input {
  flex: 1;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  padding: 10px 18px;
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.search-bar-inner input:focus {
  border-color: var(--primary-light);
  background: rgba(124,58,237,0.08);
}

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

.search-btn {
  background: var(--gradient);
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 22px;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.search-btn:hover { opacity: 0.9; transform: none; }

.search-tip {
  display: none;
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  z-index: 100;
}

.search-tip.show { display: block; }

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

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

/* ===== 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: var(--dark);
  z-index: 0;
}

.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.35;
  filter: blur(2px);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,15,26,0.85) 0%, rgba(124,58,237,0.25) 50%, rgba(6,182,212,0.15) 100%);
  z-index: 1;
}

/* 粒子动画 */
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
}

.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(1.5); opacity: 0; }
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.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);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 24px;
  animation: fade-in-up 0.6s ease both;
}

.badge-dot {
  width: 8px; height: 8px;
  background: var(--accent2);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  animation: fade-in-up 0.7s ease 0.1s both;
}

.hero h1 .highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 32px;
  animation: fade-in-up 0.7s ease 0.2s both;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
  animation: fade-in-up 0.7s ease 0.3s both;
}

.hero-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--text);
}

.hero-tag .icon { color: var(--accent2); font-size: 1rem; }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  animation: fade-in-up 0.7s ease 0.4s both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient);
  color: #fff;
  text-decoration: none;
  padding: 14px 32px;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 700;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 25px 70px rgba(124,58,237,0.45); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text);
  text-decoration: none;
  padding: 14px 32px;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.btn-secondary:hover { border-color: var(--primary-light); color: var(--primary-light); transform: translateY(-2px); }

/* ===== 通用区块 ===== */
.section {
  padding: 90px 24px;
  max-width: 1280px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.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);
  border-radius: 100px;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-title .grad {
  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: 600px;
  margin: 0 auto;
}

/* ===== 分隔线 ===== */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0 24px;
}

/* ===== 品牌故事 ===== */
.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.story-img-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}

.story-img-wrap img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.story-img-wrap:hover img { transform: scale(1.04); }

.story-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,15,26,0.7) 0%, transparent 60%);
}

.story-content h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 20px;
}

.story-content p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 1rem;
}

.story-values {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.value-chip {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.85rem;
  color: var(--primary-light);
  font-weight: 600;
}

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

.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(-6px);
  border-color: rgba(124,58,237,0.4);
  box-shadow: 0 20px 50px rgba(124,58,237,0.2);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--dark3);
}

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

.video-card:hover .video-thumb img { transform: scale(1.08); }

.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}

.video-card:hover .video-play-btn { opacity: 1; }

.play-circle {
  width: 64px; height: 64px;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}

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

.play-circle svg {
  width: 28px; height: 28px;
  fill: var(--primary);
  margin-left: 4px;
}

.video-duration {
  position: absolute;
  bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.video-info { padding: 16px; }

.video-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  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: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

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

.video-tag {
  position: absolute;
  top: 10px; left: 10px;
  background: var(--gradient2);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
}

/* ===== 服务卡片 ===== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: var(--transition);
}

.service-card:hover { transform: translateY(-4px); border-color: rgba(124,58,237,0.3); }
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 56px; height: 56px;
  background: rgba(124,58,237,0.15);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

.service-badge {
  display: inline-block;
  margin-top: 14px;
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.3);
  color: var(--accent);
  border-radius: 100px;
  padding: 3px 12px;
  font-size: 0.78rem;
  font-weight: 600;
}

/* ===== 案例卡片 ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.case-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.case-card:hover { transform: translateY(-5px); box-shadow: 0 20px 50px rgba(0,0,0,0.3); }

.case-img {
  width: 100%; height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.case-card:hover .case-img { transform: scale(1.05); }

.case-body { padding: 24px; }

.case-tag {
  display: inline-block;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.3);
  color: var(--accent2);
  border-radius: 100px;
  padding: 3px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.case-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.case-card p { color: var(--text-muted); font-size: 0.9rem; }

/* ===== 数据统计 ===== */
.stats-bar {
  background: linear-gradient(135deg, var(--dark2) 0%, var(--dark3) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 50px 24px;
}

.stats-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-item h3 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}

.stat-item p { color: var(--text-muted); font-size: 0.9rem; }

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

.review-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  position: relative;
}

.review-card:hover { transform: translateY(-3px); border-color: rgba(124,58,237,0.3); }

.review-quote {
  font-size: 3rem;
  line-height: 1;
  color: var(--primary);
  opacity: 0.3;
  position: absolute;
  top: 16px; right: 20px;
  font-family: Georgia, serif;
}

.review-stars { color: var(--accent2); font-size: 1rem; margin-bottom: 12px; letter-spacing: 2px; }

.review-text {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.review-user {
  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: 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; }

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: rgba(124,58,237,0.3); }

.faq-q {
  padding: 20px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  user-select: none;
  background: var(--card-bg);
  transition: var(--transition);
}

.faq-q:hover { background: rgba(124,58,237,0.08); }

.faq-arrow {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(124,58,237,0.2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  font-size: 0.7rem;
  color: var(--primary-light);
}

.faq-item.open .faq-arrow { transform: rotate(180deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.faq-item.open .faq-a {
  max-height: 200px;
  padding: 0 24px 20px;
}

/* ===== 联系模块 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info-list { list-style: none; }

.contact-info-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.contact-info-list li:last-child { border-bottom: none; }

.contact-icon {
  width: 40px; height: 40px;
  background: rgba(124,58,237,0.15);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-label { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 2px; }
.contact-value { font-weight: 600; }

.map-placeholder {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.map-placeholder .map-icon { font-size: 2.5rem; opacity: 0.5; }

/* ===== QR码 ===== */
.qr-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.qr-item {
  text-align: center;
}

.qr-item img {
  width: 100px; height: 100px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 2px solid var(--border);
}

.qr-item p {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark2);
  border-top: 1px solid var(--border);
  padding: 60px 24px 30px;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}

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

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 16px 0 24px;
  max-width: 280px;
  line-height: 1.7;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.social-btn {
  width: 38px; height: 38px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

.social-btn:hover { background: rgba(124,58,237,0.2); border-color: var(--primary); color: var(--primary-light); }

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-col ul { list-style: none; }

.footer-col ul li { margin-bottom: 10px; }

.footer-col ul li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
}

.footer-col ul li a:hover { color: var(--primary-light); }

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

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  transition: var(--transition);
}

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

/* ===== 动画 ===== */
@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

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

.partner-chip {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 22px;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 600;
  transition: var(--transition);
}

.partner-chip:hover { border-color: var(--primary); color: var(--primary-light); }

/* ===== 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;
  text-align: center;
  transition: var(--transition);
}

.connect-card:hover { transform: translateY(-4px); border-color: rgba(124,58,237,0.4); }

.connect-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
}

.connect-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.connect-card p { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 20px; }

/* ===== 灵感模块 ===== */
.inspire-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.inspire-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.inspire-card:hover { transform: translateY(-4px); border-color: rgba(124,58,237,0.3); }

.inspire-img {
  width: 100%; height: 180px;
  object-fit: cover;
  display: block;
}

.inspire-body { padding: 20px; flex: 1; }

.inspire-tag {
  display: inline-block;
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.3);
  color: var(--accent);
  border-radius: 100px;
  padding: 2px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.inspire-card h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.inspire-card p { color: var(--text-muted); font-size: 0.85rem; line-height: 1.6; }

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 16px 24px;
  max-width: 1280px;
  margin: 0 auto;
}

.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { opacity: 0.4; }
.breadcrumb .current { color: var(--text); }

/* ===== 内页 Hero ===== */
.inner-hero {
  padding: 140px 24px 60px;
  text-align: center;
  background: linear-gradient(180deg, rgba(124,58,237,0.08) 0%, transparent 100%);
}

.inner-hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  margin-bottom: 16px;
}

.inner-hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .story-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--dark2); padding: 16px; border-bottom: 1px solid var(--border); }
  .main-nav.open { display: flex; }
  .hamburger { display: flex; }
  .hero { padding-top: 140px; }
  .hero h1 { font-size: 2rem; }
  .section { padding: 60px 16px; }
  .connect-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .video-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; }
  .btn-primary, .btn-secondary { justify-content: center; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
}