/* ===== 91网 主样式文件 ===== */
:root {
  --primary: #6c63ff;
  --secondary: #00d4ff;
  --accent: #a855f7;
  --dark: #0a0a1a;
  --dark2: #0f0f2d;
  --dark3: #13132b;
  --card-bg: rgba(255,255,255,0.04);
  --border: rgba(108,99,255,0.25);
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --gradient: linear-gradient(135deg, #6c63ff 0%, #a855f7 50%, #00d4ff 100%);
  --gradient2: linear-gradient(135deg, #0a0a1a 0%, #13132b 100%);
  --shadow: 0 8px 32px rgba(108,99,255,0.18);
  --radius: 12px;
  --transition: all 0.3s ease;
}

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

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

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;
}

a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }

img { max-width: 100%; height: auto; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--gradient);
  color: #fff;
  text-align: center;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.5px;
}
.top-bar a { color: #fff; font-weight: 700; text-decoration: underline; }

/* ===== 导航 ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,10,26,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  white-space: nowrap;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.logo span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}
.nav a:hover, .nav a.active {
  color: #fff;
  background: rgba(108,99,255,0.15);
}

.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn-primary {
  background: var(--gradient);
  color: #fff;
  border: none;
  padding: 9px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-outline {
  background: transparent;
  color: var(--secondary);
  border: 1px solid var(--secondary);
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-outline:hover { background: var(--secondary); color: #000; }

/* ===== 搜索框 ===== */
.search-bar {
  background: var(--dark3);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
}
.search-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-wrap {
  flex: 1;
  max-width: 600px;
  position: relative;
  display: flex;
  align-items: center;
}
.search-wrap input {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 10px 50px 10px 20px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.search-wrap input::placeholder { color: var(--text-muted); }
.search-wrap input:focus { border-color: var(--primary); background: rgba(108,99,255,0.08); }
.search-wrap button {
  position: absolute;
  right: 6px;
  background: var(--gradient);
  border: none;
  border-radius: 50%;
  width: 34px;
  height: 34px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  transition: var(--transition);
}
.search-wrap button:hover { opacity: 0.85; }
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-tag {
  background: rgba(108,99,255,0.12);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
}
.search-tag:hover { background: rgba(108,99,255,0.25); color: var(--text); }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 12px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--secondary); }
.breadcrumb span { margin: 0 6px; }

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark2);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,10,26,0.9) 0%, rgba(108,99,255,0.15) 100%);
}
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.particle {
  position: absolute;
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.6; }
  50% { transform: translateY(-20px) scale(1.1); opacity: 1; }
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108,99,255,0.15);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--secondary);
  margin-bottom: 20px;
}
.hero-badge::before { content: ''; width: 8px; height: 8px; background: var(--secondary); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #fff;
}
.hero h1 .highlight { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 16px; color: var(--text-muted); margin-bottom: 32px; line-height: 1.8; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
}
.hero-stat {
  text-align: center;
  padding: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}
.hero-stat .num { font-size: 28px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-stat .label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.hero-visual { position: relative; }
.hero-img-wrap {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(108,99,255,0.3);
  position: relative;
}
.hero-img-wrap img { width: 100%; }
.hero-float-card {
  position: absolute;
  background: rgba(10,10,26,0.9);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  backdrop-filter: blur(10px);
  font-size: 13px;
  animation: float 4s ease-in-out infinite;
}
.hero-float-card.card1 { bottom: -20px; left: -20px; }
.hero-float-card.card2 { top: -20px; right: -20px; animation-delay: 2s; }
.hero-float-card .card-title { font-weight: 700; color: #fff; font-size: 12px; }
.hero-float-card .card-val { font-size: 20px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* ===== Section 通用 ===== */
section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block;
  background: rgba(108,99,255,0.12);
  border: 1px solid var(--border);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.section-title .highlight { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-desc { font-size: 15px; color: var(--text-muted); max-width: 600px; margin: 0 auto; line-height: 1.8; }

/* ===== 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;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--primary); }
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--dark3);
}
.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(0,0,0,0.4);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(108,99,255,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  border: 2px solid rgba(255,255,255,0.3);
  transition: transform 0.2s;
}
.video-card:hover .play-icon { transform: scale(1.1); }
.play-icon 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;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--gradient);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.video-info { padding: 14px 16px; }
.video-title { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 8px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.video-meta { display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--text-muted); }
.video-stats { display: flex; gap: 12px; }
.video-stat-item { display: flex; align-items: center; gap: 4px; }

/* ===== 产品矩阵 ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.product-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.product-card:hover::before { transform: scaleX(1); }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary); }
.product-icon {
  width: 52px;
  height: 52px;
  background: rgba(108,99,255,0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
  transition: var(--transition);
}
.product-card:hover .product-icon { background: rgba(108,99,255,0.25); transform: scale(1.1); }
.product-name { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.product-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.product-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.product-tag { background: rgba(108,99,255,0.1); border: 1px solid var(--border); color: var(--text-muted); padding: 3px 10px; border-radius: 12px; font-size: 11px; }

/* ===== 技术引擎 ===== */
.tech-section { background: var(--dark3); }
.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.tech-list { display: flex; flex-direction: column; gap: 20px; }
.tech-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.tech-item:hover { border-color: var(--primary); transform: translateX(6px); }
.tech-item-icon {
  width: 44px;
  height: 44px;
  background: rgba(108,99,255,0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.tech-item-body h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.tech-item-body p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.tech-visual { position: relative; }
.tech-img-wrap { border-radius: 16px; overflow: hidden; border: 1px solid var(--border); }
.tech-img-wrap img { width: 100%; }
.tech-stats-overlay {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.tech-stat {
  background: rgba(10,10,26,0.92);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  text-align: center;
  backdrop-filter: blur(10px);
}
.tech-stat .num { font-size: 20px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.tech-stat .label { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* ===== 解决方案 ===== */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.solution-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  background: var(--card-bg);
}
.solution-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--primary); }
.solution-img { position: relative; overflow: hidden; height: 200px; }
.solution-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.solution-card:hover .solution-img img { transform: scale(1.05); }
.solution-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,26,0.9) 0%, transparent 60%);
}
.solution-label {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--gradient);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
}
.solution-body { padding: 20px; }
.solution-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.solution-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.solution-features { display: flex; flex-direction: column; gap: 6px; }
.solution-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.solution-feature::before { content: '✓'; color: var(--secondary); font-weight: 700; flex-shrink: 0; }

/* ===== 价值流程 ===== */
.process-section { background: var(--dark3); }
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--gradient);
  opacity: 0.3;
}
.process-step { text-align: center; padding: 20px 16px; position: relative; }
.step-num {
  width: 56px;
  height: 56px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 16px;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 20px rgba(108,99,255,0.4);
}
.step-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 案例 ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.case-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary); }
.case-header { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.case-logo {
  width: 48px;
  height: 48px;
  background: rgba(108,99,255,0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}
.case-company { font-size: 15px; font-weight: 700; color: #fff; }
.case-industry { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.case-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.case-metrics { display: flex; gap: 16px; }
.case-metric { text-align: center; }
.case-metric .val { font-size: 20px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.case-metric .label { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* ===== 动态新闻 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.news-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary); }
.news-img { height: 180px; overflow: hidden; background: var(--dark3); }
.news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.news-card:hover .news-img img { transform: scale(1.05); }
.news-body { padding: 18px; }
.news-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.news-cat { background: rgba(108,99,255,0.12); color: var(--primary); font-size: 11px; padding: 2px 8px; border-radius: 4px; font-weight: 600; }
.news-date { font-size: 12px; color: var(--text-muted); }
.news-title { font-size: 14px; font-weight: 600; color: #fff; line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-excerpt { font-size: 13px; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ===== 用户评论 ===== */
.reviews-section { background: var(--dark3); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: var(--transition);
}
.review-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.review-stars { color: #fbbf24; font-size: 16px; margin-bottom: 12px; letter-spacing: 2px; }
.review-text { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; color: #fff; }
.review-role { font-size: 12px; 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);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--primary); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  gap: 12px;
}
.faq-question:hover { color: var(--secondary); }
.faq-toggle {
  width: 24px;
  height: 24px;
  background: rgba(108,99,255,0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
  transition: transform 0.3s;
  color: var(--primary);
}
.faq-item.open .faq-toggle { transform: rotate(45deg); }
.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; padding-bottom: 18px; }

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-item {
  display: flex;
  gap: 16px;
  padding: 18px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.contact-item:hover { border-color: var(--primary); }
.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(108,99,255,0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.contact-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.contact-val { font-size: 14px; font-weight: 600; color: #fff; }
.contact-form { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.form-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 24px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
  font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--primary); background: rgba(108,99,255,0.06); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select option { background: var(--dark2); }

/* ===== 页脚 ===== */
.footer {
  background: var(--dark2);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 36px;
  height: 36px;
  background: rgba(108,99,255,0.12);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-muted);
  transition: var(--transition);
}
.social-btn:hover { background: rgba(108,99,255,0.25); color: #fff; border-color: var(--primary); }
.footer-col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { font-size: 13px; color: var(--text-muted); transition: var(--transition); }
.footer-links a:hover { color: var(--secondary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--secondary); }

/* ===== 内页通用 ===== */
.page-hero {
  background: var(--dark2);
  padding: 60px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(108,99,255,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.page-hero h1 { font-size: clamp(1.8rem, 3vw, 2.8rem); font-weight: 800; color: #fff; margin-bottom: 12px; }
.page-hero p { font-size: 15px; color: var(--text-muted); max-width: 600px; line-height: 1.8; }

/* ===== 内页侧边栏 ===== */
.inner-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.sidebar { display: flex; flex-direction: column; gap: 20px; }
.sidebar-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.sidebar-card h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.sidebar-links { display: flex; flex-direction: column; gap: 6px; }
.sidebar-links a { font-size: 13px; color: var(--text-muted); padding: 6px 10px; border-radius: 6px; transition: var(--transition); }
.sidebar-links a:hover, .sidebar-links a.active { background: rgba(108,99,255,0.12); color: var(--secondary); }

/* ===== 滚动动画 ===== */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== 汉堡菜单 ===== */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

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

@media (max-width: 768px) {
  .nav { display: none; position: fixed; top: 64px; left: 0; right: 0; background: rgba(10,10,26,0.98); flex-direction: column; padding: 20px; gap: 4px; border-bottom: 1px solid var(--border); z-index: 999; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 16px; font-size: 15px; }
  .hamburger { display: flex; }
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-steps::before { display: none; }
  section { padding: 56px 0; }
  .header-actions .btn-outline { display: none; }
  .search-tags { display: none; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .hero-stat .num { font-size: 22px; }
  .video-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
}

/* ===== 通知弹窗 ===== */
.search-no-result {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 40px;
  text-align: center;
  z-index: 9999;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  min-width: 300px;
}
.search-no-result h3 { font-size: 18px; color: #fff; margin-bottom: 10px; }
.search-no-result p { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; }
.search-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 9998;
}

/* ===== 视频播放弹窗 ===== */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.video-modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.85); }
.video-modal-inner {
  position: relative;
  z-index: 1;
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  max-width: 800px;
  width: 90%;
}
.video-modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  transition: var(--transition);
}
.video-modal-close:hover { color: #fff; }
.video-modal-player {
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 15px;
  margin-top: 10px;
}
.video-modal-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 8px; }

/* ===== 加载动画 ===== */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--dark3) 25%, rgba(255,255,255,0.05) 50%, var(--dark3) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 6px;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: rgba(108,99,255,0.4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(108,99,255,0.7); }