/* ===================================================
   51吃瓜 - 官方网站主样式
   现代活力 · 科技未来感 · 沉浸式交互
   =================================================== */

/* ---- 变量 ---- */
:root {
  --primary: #7c3aed;
  --primary-light: #a855f7;
  --accent: #06b6d4;
  --accent-warm: #f59e0b;
  --dark: #0f0f1a;
  --dark-2: #1a1a2e;
  --dark-3: #16213e;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --text-white: #ffffff;
  --card-bg: rgba(255,255,255,0.05);
  --card-border: rgba(124,58,237,0.3);
  --gradient-main: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
  --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --gradient-dark: linear-gradient(180deg, #0f0f1a 0%, #1a1a2e 100%);
  --shadow-glow: 0 0 30px rgba(124,58,237,0.4);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ---- 重置 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  background: var(--dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
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(--dark-2); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ============================================================
   导航栏
   ============================================================ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(15,15,26,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(124,58,237,0.2);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(15,15,26,0.98);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.nav-container {
  max-width: 1280px; margin: 0 auto;
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 70px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.5rem; font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-logo span.logo-icon {
  width: 40px; height: 40px;
  background: var(--gradient-main);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; -webkit-text-fill-color: white; color: white;
  box-shadow: var(--shadow-glow);
}
.nav-menu {
  display: flex; align-items: center; gap: 4px;
}
.nav-menu a {
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--text-white);
  background: rgba(124,58,237,0.15);
}
.nav-menu a.active::after {
  content: '';
  position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 20px; height: 2px;
  background: var(--gradient-main); border-radius: 1px;
}
.nav-actions { display: flex; align-items: center; gap: 12px; }
.btn-nav {
  padding: 8px 20px; border-radius: 20px;
  background: var(--gradient-main);
  color: white; font-size: 0.85rem; font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(124,58,237,0.4);
}
.btn-nav:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(124,58,237,0.6); }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 4px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--text-main); border-radius: 1px;
  transition: var(--transition);
}

/* ---- 搜索框 ---- */
.search-bar-wrap {
  background: rgba(26,26,46,0.95);
  border-bottom: 1px solid rgba(124,58,237,0.15);
  padding: 10px 24px;
}
.search-bar-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; gap: 12px;
}
.search-input-wrap {
  flex: 1; max-width: 600px;
  display: flex; align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 24px; padding: 8px 18px;
  transition: var(--transition);
}
.search-input-wrap:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.15);
}
.search-input-wrap svg { color: var(--text-muted); flex-shrink: 0; }
.search-input-wrap input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text-main); font-size: 0.9rem;
  padding: 0 10px;
}
.search-input-wrap input::placeholder { color: var(--text-muted); }
.search-btn {
  padding: 8px 22px; border-radius: 20px;
  background: var(--gradient-main); border: none;
  color: white; font-size: 0.85rem; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.search-btn:hover { transform: translateY(-1px); }
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-tag {
  padding: 4px 12px; border-radius: 12px;
  background: rgba(124,58,237,0.12);
  border: 1px solid rgba(124,58,237,0.25);
  color: var(--text-muted); font-size: 0.78rem;
  cursor: pointer; transition: var(--transition);
}
.search-tag:hover { background: rgba(124,58,237,0.25); color: var(--text-main); }

/* ============================================================
   通用容器 & 区块
   ============================================================ */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 50px 0; }
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800; line-height: 1.2;
  margin-bottom: 16px;
}
.section-title span {
  background: var(--gradient-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  color: var(--text-muted); font-size: 1.05rem;
  max-width: 600px; margin-bottom: 48px;
}
.section-header { text-align: center; margin-bottom: 56px; }
.section-header .section-subtitle { margin: 0 auto 0; }
.tag-label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 16px; border-radius: 20px;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.3);
  color: var(--primary-light); font-size: 0.8rem; font-weight: 600;
  margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.05em;
}

/* ============================================================
   首屏 Banner
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: 140px; padding-bottom: 80px;
}
.hero-bg {
  position: absolute; inset: 0;
  background: var(--gradient-dark);
}
.hero-bg-img {
  position: absolute; inset: 0;
  background-image: url('../images/banner_hero.jpg');
  background-size: cover; background-position: center;
  opacity: 0.25;
}
.hero-particles {
  position: absolute; inset: 0; overflow: hidden;
}
.hero-particles::before {
  content: '';
  position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at 60% 40%, rgba(124,58,237,0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(6,182,212,0.1) 0%, transparent 50%);
  animation: floatBg 8s ease-in-out infinite alternate;
}
@keyframes floatBg {
  from { transform: translate(0,0) scale(1); }
  to { transform: translate(2%,2%) scale(1.05); }
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 780px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: 24px;
  background: rgba(124,58,237,0.2);
  border: 1px solid rgba(124,58,237,0.4);
  color: var(--primary-light); font-size: 0.85rem; font-weight: 600;
  margin-bottom: 28px;
  animation: fadeInUp 0.6s ease both;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900; line-height: 1.15;
  margin-bottom: 24px;
  animation: fadeInUp 0.7s 0.1s ease both;
}
.hero-title .highlight {
  background: var(--gradient-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.15rem; color: var(--text-muted);
  margin-bottom: 40px; max-width: 560px;
  animation: fadeInUp 0.7s 0.2s ease both;
}
.hero-stats {
  display: flex; gap: 40px; margin-bottom: 40px;
  animation: fadeInUp 0.7s 0.3s ease both;
}
.hero-stat { text-align: left; }
.hero-stat .num {
  font-size: 1.8rem; font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat .label { font-size: 0.8rem; color: var(--text-muted); }
.hero-actions {
  display: flex; gap: 16px; flex-wrap: wrap;
  animation: fadeInUp 0.7s 0.4s ease both;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 28px;
  background: var(--gradient-main);
  color: white; font-size: 1rem; font-weight: 700;
  transition: var(--transition);
  box-shadow: 0 8px 25px rgba(124,58,237,0.5);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 35px rgba(124,58,237,0.7); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 28px;
  background: transparent;
  border: 2px solid rgba(124,58,237,0.5);
  color: var(--text-main); font-size: 1rem; font-weight: 600;
  transition: var(--transition);
}
.btn-secondary:hover {
  border-color: var(--primary);
  background: rgba(124,58,237,0.1);
  transform: translateY(-2px);
}
.hero-visual {
  position: absolute; right: 0; top: 50%;
  transform: translateY(-50%);
  width: 50%; max-width: 600px;
  animation: fadeInRight 1s 0.3s ease both;
  display: none;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translate(30px,-50%); }
  to { opacity: 1; transform: translate(0,-50%); }
}

/* ============================================================
   视频卡片
   ============================================================ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.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(-6px);
  box-shadow: var(--shadow-glow), var(--shadow-card);
  border-color: var(--primary);
}
.video-thumb {
  position: relative; overflow: hidden;
  aspect-ratio: 16/9;
}
.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);
  transition: var(--transition);
  opacity: 0;
}
.video-card:hover .video-play-btn { opacity: 1; background: rgba(0,0,0,0.45); }
.play-circle {
  width: 60px; height: 60px; border-radius: 50%;
  background: rgba(124,58,237,0.9);
  display: flex; align-items: center; justify-content: center;
  transform: scale(0.7); transition: var(--transition);
  box-shadow: 0 0 30px rgba(124,58,237,0.8);
}
.video-card:hover .play-circle { transform: scale(1); }
.play-circle svg { color: white; margin-left: 4px; }
.video-badge {
  position: absolute; top: 10px; left: 10px;
  padding: 3px 10px; border-radius: 10px;
  background: var(--gradient-main);
  color: white; font-size: 0.72rem; font-weight: 700;
}
.video-duration {
  position: absolute; bottom: 10px; right: 10px;
  padding: 3px 8px; border-radius: 6px;
  background: rgba(0,0,0,0.75);
  color: white; font-size: 0.75rem;
}
.video-info { padding: 16px; }
.video-title {
  font-size: 0.95rem; font-weight: 700;
  color: var(--text-main); margin-bottom: 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex; align-items: center; gap: 12px;
  color: var(--text-muted); font-size: 0.78rem;
}
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ============================================================
   品牌故事
   ============================================================ */
.brand-story { background: var(--dark-2); }
.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%; border-radius: var(--radius); }
.story-img-wrap::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: var(--radius);
  border: 2px solid rgba(124,58,237,0.3);
  pointer-events: none;
}
.story-content { }
.story-list { margin-top: 28px; display: flex; flex-direction: column; gap: 20px; }
.story-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 20px; border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  transition: var(--transition);
}
.story-item:hover { border-color: var(--primary); transform: translateX(6px); }
.story-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--gradient-main);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 1.3rem;
}
.story-item h4 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.story-item p { font-size: 0.88rem; color: var(--text-muted); }

/* ============================================================
   品牌探索 - 服务卡片
   ============================================================ */
.explore-section { background: var(--dark); }
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.service-card {
  padding: 32px 28px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-main);
  transform: scaleX(0); transform-origin: left;
  transition: var(--transition);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: rgba(124,58,237,0.5);
}
.service-img { width: 80px; height: 80px; border-radius: 16px; margin-bottom: 20px; object-fit: cover; }
.service-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.service-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }
.service-link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 16px; color: var(--primary-light);
  font-size: 0.85rem; font-weight: 600;
  transition: var(--transition);
}
.service-link:hover { gap: 10px; }

/* ============================================================
   品牌创造 - 案例
   ============================================================ */
.create-section { background: var(--dark-2); }
.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(--card-border);
  border-radius: var(--radius);
  overflow: hidden; transition: var(--transition);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-glow); border-color: var(--primary); }
.case-img { aspect-ratio: 16/9; overflow: hidden; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.case-card:hover .case-img img { transform: scale(1.06); }
.case-body { padding: 24px; }
.case-tag {
  display: inline-block; padding: 3px 12px; border-radius: 10px;
  background: rgba(124,58,237,0.15); color: var(--primary-light);
  font-size: 0.75rem; font-weight: 600; margin-bottom: 12px;
}
.case-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.case-body p { font-size: 0.85rem; color: var(--text-muted); }
.case-stats { display: flex; gap: 20px; margin-top: 16px; }
.case-stat { font-size: 0.8rem; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.case-stat strong { color: var(--accent-warm); }

/* ============================================================
   品牌灵感
   ============================================================ */
.inspire-section { background: var(--dark); }
.inspire-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}
.inspire-featured {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); overflow: hidden;
  transition: var(--transition);
}
.inspire-featured:hover { border-color: var(--primary); }
.inspire-featured-img { aspect-ratio: 16/7; overflow: hidden; }
.inspire-featured-img img { width: 100%; height: 100%; object-fit: cover; }
.inspire-featured-body { padding: 28px; }
.inspire-list { display: flex; flex-direction: column; gap: 16px; }
.inspire-item {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 18px;
  transition: var(--transition); cursor: pointer;
}
.inspire-item:hover { border-color: var(--primary); transform: translateX(4px); }
.inspire-item h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 6px; }
.inspire-item p { font-size: 0.8rem; color: var(--text-muted); }

/* ============================================================
   用户评价
   ============================================================ */
.reviews-section { background: var(--dark-2); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.review-card {
  padding: 28px; background: var(--card-bg);
  border: 1px solid var(--card-border); border-radius: var(--radius);
  transition: var(--transition);
}
.review-card:hover { transform: translateY(-4px); border-color: var(--primary); }
.review-stars { display: flex; gap: 3px; margin-bottom: 14px; }
.review-stars span { color: var(--accent-warm); font-size: 1rem; }
.review-text { font-size: 0.9rem; color: var(--text-main); line-height: 1.7; margin-bottom: 18px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--gradient-main);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: white; font-weight: 700;
}
.review-name { font-size: 0.9rem; font-weight: 700; }
.review-role { font-size: 0.78rem; color: var(--text-muted); }

/* ============================================================
   FAQ
   ============================================================ */
.faq-section { background: var(--dark); }
.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(--card-border);
  border-radius: var(--radius); overflow: hidden;
}
.faq-question {
  padding: 20px 24px;
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; font-weight: 600; font-size: 0.95rem;
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  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: var(--transition);
  font-size: 1rem; color: var(--primary-light);
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: white; }
.faq-answer {
  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;
}
.faq-item.open .faq-answer { max-height: 200px; padding: 0 24px 20px; }

/* ============================================================
   品牌连接
   ============================================================ */
.connect-section { background: var(--dark-2); }
.connect-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.connect-info h3 { font-size: 1.4rem; font-weight: 800; margin-bottom: 16px; }
.connect-info p { color: var(--text-muted); margin-bottom: 28px; }
.contact-list { display: flex; flex-direction: column; gap: 14px; }
.contact-item {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px; border-radius: var(--radius-sm);
  background: var(--card-bg); border: 1px solid var(--card-border);
}
.contact-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--gradient-main);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
}
.contact-item span { font-size: 0.88rem; color: var(--text-muted); }
.contact-item strong { display: block; font-size: 0.95rem; color: var(--text-main); }
.connect-form { }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: var(--text-muted); }
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 16px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius-sm); color: var(--text-main);
  font-size: 0.9rem; outline: none; transition: var(--transition);
  font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.15);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.btn-submit {
  width: 100%; padding: 14px;
  background: var(--gradient-main); border: none;
  border-radius: var(--radius-sm); color: white;
  font-size: 1rem; font-weight: 700; cursor: pointer;
  transition: var(--transition);
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(124,58,237,0.5); }

/* ============================================================
   合作伙伴
   ============================================================ */
.partners-section { background: var(--dark); padding: 50px 0; }
.partners-title { text-align: center; color: var(--text-muted); font-size: 0.85rem; margin-bottom: 28px; text-transform: uppercase; letter-spacing: 0.1em; }
.partners-row { display: flex; gap: 32px; justify-content: center; flex-wrap: wrap; align-items: center; }
.partner-badge {
  padding: 10px 24px; border-radius: var(--radius-sm);
  background: var(--card-bg); border: 1px solid var(--card-border);
  color: var(--text-muted); font-size: 0.9rem; font-weight: 600;
  transition: var(--transition);
}
.partner-badge:hover { border-color: var(--primary); color: var(--text-main); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: #080812;
  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-text {
  font-size: 1.6rem; font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: 12px;
}
.footer-brand p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 0.9rem;
  transition: var(--transition);
}
.social-btn:hover { background: var(--primary); border-color: var(--primary); color: white; }
.footer-col h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 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 rgba(255,255,255,0.06);
  padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 0.82rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 0.82rem; color: var(--text-muted); transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); }
.footer-icp { font-size: 0.78rem; color: rgba(148,163,184,0.6); }

/* ============================================================
   内页通用
   ============================================================ */
.page-hero {
  padding: 140px 0 60px;
  background: var(--dark-2);
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(124,58,237,0.2) 0%, transparent 70%);
}
.page-hero-content { position: relative; z-index: 1; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; color: var(--text-muted); margin-bottom: 16px;
}
.breadcrumb a { transition: var(--transition); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb span { color: var(--text-muted); }
.page-title {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 900; margin-bottom: 16px;
}
.page-desc { font-size: 1.05rem; color: var(--text-muted); max-width: 600px; }

/* ============================================================
   动画
   ============================================================ */
.fade-in {
  opacity: 0; transform: translateY(20px);
  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; }

/* 浮动动画 */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.float-anim { animation: float 4s ease-in-out infinite; }

/* 渐变边框 */
.glow-border {
  position: relative;
}
.glow-border::before {
  content: '';
  position: absolute; inset: -1px;
  border-radius: inherit;
  background: var(--gradient-main);
  z-index: -1; opacity: 0;
  transition: opacity 0.3s;
}
.glow-border:hover::before { opacity: 1; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .story-grid { grid-template-columns: 1fr; gap: 40px; }
  .inspire-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .connect-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; position: fixed; top: 70px; left: 0; right: 0; bottom: 0; flex-direction: column; background: rgba(15,15,26,0.98); padding: 24px; gap: 8px; z-index: 999; }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 14px 20px; font-size: 1rem; border-radius: var(--radius-sm); }
  .nav-toggle { display: flex; }
  .hero-stats { gap: 24px; }
  .hero-stat .num { font-size: 1.4rem; }
  .video-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .search-tags { display: none; }
  .section { padding: 56px 0; }
  .hero { padding-top: 120px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .service-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   数字滚动
   ============================================================ */
.count-up { display: inline-block; }

/* ============================================================
   Toast 通知
   ============================================================ */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 9999;
  padding: 14px 24px; border-radius: var(--radius-sm);
  background: var(--gradient-main); color: white;
  font-size: 0.9rem; font-weight: 600;
  box-shadow: 0 8px 25px rgba(124,58,237,0.5);
  transform: translateY(100px); opacity: 0;
  transition: var(--transition);
}
.toast.show { transform: translateY(0); opacity: 1; }