/* ============================================================
   择明新学诚教育 - 企业官网 v2
   配色：青蓝 #0ea5e9 + 暖黄 #f59e0b
   设计参考：React + Tailwind 现代简约风格
   ============================================================ */

/* --- 全局重置 --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* 主色 - 青蓝 */
  --primary: #0ea5e9;
  --primary-dark: #0284c7;
  --primary-light: #e0f2fe;
  --primary-soft: rgba(14, 165, 233, 0.1);
  /* 辅色 - 暖黄 */
  --secondary: #f59e0b;
  --secondary-dark: #d97706;
  --secondary-light: #fef3c7;
  --secondary-soft: rgba(245, 158, 11, 0.15);
  /* 中性色 */
  --text: #1e293b;
  --text-light: #64748b;
  --text-lighter: #94a3b8;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-muted: #f1f5f9;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 2px 12px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-xl: 0 12px 48px rgba(0,0,0,0.1);
  /* 圆角 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  /* 过渡 */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --transition: 0.3s var(--ease);
  --transition-slow: 0.6s var(--ease);
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text); background: var(--bg);
  line-height: 1.7; -webkit-font-smoothing: antialiased;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* --- 按钮 --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-size: 0.95rem; font-weight: 600; cursor: pointer;
  border: none; border-radius: 10px; transition: all var(--transition);
  font-family: inherit; white-space: nowrap;
  padding: 14px 28px; min-width: 120px;
}
.btn-sm { padding: 8px 18px; font-size: 0.85rem; min-width: auto; }
.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 4px 16px rgba(14,165,233,0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 24px rgba(14,165,233,0.4);
  transform: translateY(-1px);
}
.btn-outline-dark {
  background: transparent; color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline-dark:hover {
  background: var(--bg-muted); border-color: var(--text-light);
}
.btn-arrow { width: 16px; height: 16px; }

/* --- 渐入动画 --- */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* --- Section 通用 --- */
.section { padding: 96px 0; }
.section-tag {
  display: inline-block; font-size: 0.8rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--primary); margin-bottom: 12px;
}
.section-title {
  font-size: 2.1rem; font-weight: 800; color: var(--text);
  letter-spacing: -0.02em; margin-bottom: 0;
}
.section-divider {
  width: 56px; height: 4px; background: var(--primary);
  border-radius: 2px; margin: 16px 0;
}
.section-divider.center { margin: 16px auto; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-desc { color: var(--text-light); font-size: 1rem; margin-top: 8px; }

/* ==================== 导航栏 ==================== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 14px 0; transition: all var(--transition);
}
.header.scrolled {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
  padding: 10px 0;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo-link { display: flex; align-items: center; gap: 10px; }
.logo-img {
  height: 40px; width: auto; display: block;
  filter: drop-shadow(0 2px 6px rgba(14,165,233,0.2));
  transition: transform var(--transition);
}
.logo-link:hover .logo-img { transform: scale(1.03); }
.logo-text { font-size: 1.05rem; font-weight: 700; color: var(--text); }

.nav-list { display: flex; list-style: none; gap: 4px; }
.nav-link {
  font-size: 0.88rem; font-weight: 500; padding: 8px 16px;
  border-radius: 6px; transition: all var(--transition);
  color: var(--text-light);
}
.nav-link:hover { color: var(--text); background: var(--bg-muted); }
.nav-link.active { color: var(--primary); background: var(--primary-soft); }

.nav-cta { display: inline-flex; }

.menu-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px; z-index: 1001;
}
.menu-toggle span {
  display: block; width: 22px; height: 2px; background: var(--text);
  border-radius: 2px; transition: all var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ==================== Hero ==================== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  background: linear-gradient(135deg, var(--primary-soft) 0%, var(--bg) 40%, var(--secondary-light) 100%);
  overflow: hidden; padding: 100px 0 60px;
}
.hero-decor { position: absolute; inset: 0; pointer-events: none; }
.hero-star-lg {
  position: absolute; top: -60px; right: -60px;
  width: 480px; height: 480px; color: var(--primary);
  opacity: 0.08;
}
.hero-star-sm {
  position: absolute; bottom: -80px; left: -80px;
  width: 360px; height: 360px; color: var(--secondary);
  opacity: 0.12;
}
.hero-blob {
  position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.5;
}
.hero-blob-1 { top: 25%; left: 20%; width: 240px; height: 240px; background: var(--primary); opacity: 0.06; }
.hero-blob-2 { bottom: 30%; right: 25%; width: 300px; height: 300px; background: var(--secondary); opacity: 0.1; }

.hero-grid {
  position: relative; display: grid; grid-template-columns: 1fr 1fr;
  gap: 48px; align-items: center; width: 100%;
}
.hero-text { z-index: 2; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 18px; border-radius: 50px;
  background: var(--primary-soft); color: var(--primary);
  font-size: 0.85rem; font-weight: 600; margin-bottom: 24px;
}
.hero-title {
  font-size: 3rem; font-weight: 800; line-height: 1.15;
  letter-spacing: -0.03em; color: var(--text); margin-bottom: 16px;
}
.hero-title-gradient {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.15rem; color: var(--text-light);
  margin-bottom: 36px; max-width: 420px; line-height: 1.7;
}
.hero-btns { display: flex; gap: 18px; flex-wrap: wrap; }

/* Hero 轮播 */
.hero-image { position: relative; z-index: 2; }
.hero-carousel {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-xl); aspect-ratio: 4/3;
}
.carousel-track {
  display: flex; height: 100%; width: 100%;
  transition: transform 0.5s var(--ease);
  will-change: transform;
}
.carousel-slide {
  width: 100%; height: 100%; flex: 0 0 100%;
  position: relative; overflow: hidden;
}
.carousel-slide img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  /* 防止图片宽度因 subpixel 取整出现缝隙 */
  min-width: 100.5%;
}
.carousel-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  border: none; background: rgba(255,255,255,0.85); color: var(--text);
  font-size: 1.4rem; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; opacity: 0.7; transition: all var(--transition);
  box-shadow: var(--shadow-md); z-index: 3;
}
.carousel-arrow:hover {
  opacity: 1; background: #fff; color: var(--primary);
  transform: translateY(-50%) scale(1.05);
}
.carousel-prev { left: 14px; }
.carousel-next { right: 14px; }
.hero-carousel:hover .carousel-arrow { opacity: 1; }
.carousel-dots {
  position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; z-index: 3;
}
.carousel-dot {
  width: 8px; height: 8px; border-radius: 50%;
  border: none; background: rgba(255,255,255,0.6);
  cursor: pointer; transition: all var(--transition);
}
.carousel-dot.active {
  background: var(--primary); width: 24px; border-radius: 4px;
}
.carousel-dot:hover { background: rgba(255,255,255,0.9); }

.hero-float-card {
  position: absolute; bottom: -20px; left: -24px;
  background: #fff; border-radius: var(--radius);
  padding: 16px 20px; box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 12px;
  border: 1px solid var(--border);
  animation: floatCard 3s ease-in-out infinite;
}
.float-icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--secondary-soft); color: var(--secondary-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.float-title { font-size: 0.85rem; font-weight: 700; color: var(--text); }
.float-desc { font-size: 0.75rem; color: var(--text-light); }
@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* 滚动指示器 */
.scroll-indicator {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  z-index: 2; color: var(--text-light); font-size: 0.75rem;
}
.scroll-indicator svg {
  width: 18px; height: 18px; animation: scrollBounce 2s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* ==================== 关于我们 ==================== */
.about { background: var(--bg); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.about-image { position: relative; }
.about-carousel {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); aspect-ratio: 4/3;
}
.about-carousel .carousel-slide img { width: 100%; height: 100%; object-fit: cover; }
.about-carousel .carousel-dots {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; z-index: 3;
}
.about-carousel .carousel-dot {
  width: 8px; height: 8px; border-radius: 50%;
  border: none; background: rgba(255,255,255,0.7);
  cursor: pointer; transition: all var(--transition);
}
.about-carousel .carousel-dot.active {
  background: var(--primary); width: 22px; border-radius: 4px;
}
.about-decor-box { position: absolute; border-radius: var(--radius-lg); z-index: -1; }
.about-decor-1 {
  bottom: -16px; right: -16px; width: 120px; height: 120px;
  background: var(--secondary-soft);
}
.about-decor-2 {
  top: -16px; left: -16px; width: 80px; height: 80px;
  border: 2px solid var(--primary-light);
}

.about-text .section-divider { margin: 16px 0 24px; }
.about-desc { color: var(--text-light); font-size: 1rem; line-height: 1.8; margin-bottom: 28px; }

.about-highlights {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 24px;
}
.highlight-item {
  display: flex; align-items: center; gap: 10px;
  padding: 12px; border-radius: var(--radius-sm);
  background: var(--bg-muted); font-size: 0.85rem; font-weight: 500;
}
.highlight-item svg { width: 18px; height: 18px; color: var(--primary); flex-shrink: 0; }

.about-list { list-style: none; }
.about-list li {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 8px 0; color: var(--text);
}
.about-list svg {
  width: 18px; height: 18px; color: var(--primary); flex-shrink: 0; margin-top: 3px;
}

/* ==================== 企业文化 ==================== */
.culture {
  background: linear-gradient(180deg, var(--bg) 0%, var(--primary-soft) 30%, var(--bg) 100%);
  position: relative; overflow: hidden;
}
.culture::before, .culture::after {
  content: ''; position: absolute; pointer-events: none;
}
.culture::before {
  top: 40px; right: 40px; width: 140px; height: 140px;
  border: 1px solid var(--primary); opacity: 0.06; border-radius: 50%;
  transform: scaleY(0.6) rotate(-15deg);
}
.culture::after {
  bottom: 60px; left: 40px; width: 100px; height: 100px;
  background: var(--secondary); opacity: 0.06; border-radius: 50%;
}

/* 愿景使命大卡片 */
.culture-big-cards {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 48px;
}
.culture-big-card {
  background: rgba(255,255,255,0.8); backdrop-filter: blur(8px);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 36px; transition: all var(--transition);
}
.culture-big-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.big-card-icon {
  width: 48px; height: 48px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.big-card-icon svg { width: 24px; height: 24px; }
.bg-primary-soft { background: var(--primary-soft); color: var(--primary); }
.bg-secondary-soft { background: var(--secondary-soft); color: var(--secondary-dark); }
.culture-big-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.culture-big-card p { color: var(--text-light); font-size: 1rem; line-height: 1.7; }

/* 核心价值观 */
.culture-subtitle {
  text-align: center; font-size: 1.3rem; font-weight: 700;
  margin-bottom: 28px; color: var(--text);
}
.values-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 48px;
}
.value-card {
  background: rgba(255,255,255,0.8); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px 16px;
  text-align: center; transition: all var(--transition);
  cursor: default;
}
.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.value-icon {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px;
}
.value-icon svg { width: 20px; height: 20px; }
.value-card span { font-weight: 600; font-size: 0.95rem; }

/* 企业精神 + 经营准则 渐变卡片 */
.culture-gradient-cards {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 48px;
}
.gradient-card {
  position: relative; border-radius: var(--radius-lg);
  padding: 40px; overflow: hidden; color: #fff;
}
.gradient-card-bg { position: absolute; inset: 0; z-index: 0; }
.gradient-card-blue .gradient-card-bg {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}
.gradient-card-yellow .gradient-card-bg {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
}
.gradient-card-blue .gradient-card-bg::after,
.gradient-card-yellow .gradient-card-bg::after {
  content: ''; position: absolute; top: -40px; right: -40px;
  width: 160px; height: 160px; border-radius: 50%;
  background: rgba(255,255,255,0.1);
}
.gradient-card-yellow .gradient-card-bg::before {
  content: ''; position: absolute; bottom: -40px; left: -40px;
  width: 120px; height: 120px; border-radius: 50%;
  background: rgba(255,255,255,0.06);
}
.gradient-card-content { position: relative; z-index: 1; }
.gradient-card-content svg { width: 32px; height: 32px; margin-bottom: 16px; }
.gradient-card-blue .gradient-card-content svg { color: var(--secondary); }
.gradient-card-yellow .gradient-card-content svg { color: var(--primary); }
.gradient-card-content h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.gradient-card-content p { font-size: 1.05rem; opacity: 0.9; line-height: 1.7; font-weight: 500; }

/* 工作行为准则 */
.standards-grid {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px;
}
.standard-item {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 20px 12px; border-radius: var(--radius);
  background: rgba(255,255,255,0.6); border: 1px solid var(--border);
  transition: all var(--transition); cursor: default;
}
.standard-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary); box-shadow: var(--shadow);
}
.standard-item svg { width: 22px; height: 22px; color: var(--primary); }
.standard-item span { font-size: 0.85rem; font-weight: 500; text-align: center; }

/* ==================== 校园风采 ==================== */
.gallery { background: var(--bg-muted); }
.gallery-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.gallery-item { border-radius: var(--radius-lg); overflow: hidden; }
.gallery-item:hover {
  transform: translateY(-6px); box-shadow: var(--shadow-xl);
  transition: all var(--transition);
}
.gallery-carousel {
  position: relative; aspect-ratio: 4/3; overflow: hidden;
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  background: var(--bg);
}
.gallery-carousel .carousel-slide img {
  width: 100%; height: 100%; object-fit: cover;
}
.gallery-carousel .carousel-dots {
  position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 6px; z-index: 3;
}
.gallery-carousel .carousel-dot {
  width: 6px; height: 6px; border-radius: 50%;
  border: none; background: rgba(255,255,255,0.65);
  cursor: pointer; transition: all var(--transition);
}
.gallery-carousel .carousel-dot.active {
  background: var(--primary); width: 16px; border-radius: 3px;
}
.gallery-overlay {
  position: absolute; top: 0; left: 0; right: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.45) 0%, transparent 70%);
  display: flex; align-items: flex-start; padding: 16px;
  opacity: 0; transition: opacity var(--transition);
  z-index: 2; pointer-events: none;
}
.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-overlay span {
  color: #fff; font-size: 0.85rem; font-weight: 600;
  background: rgba(0,0,0,0.3); padding: 4px 10px; border-radius: 20px;
  pointer-events: none;
}

/* ==================== 联系我们 ==================== */
.contact { background: var(--bg); }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start;
}
.contact-form-wrap { }
.contact-form {
  background: #fff; padding: 36px; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md); border: 1px solid var(--border);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; margin-bottom: 6px; font-weight: 600;
  color: var(--text); font-size: 0.88rem;
}
.form-group input,
.form-group textarea {
  width: 100%; padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); font-size: 0.95rem;
  font-family: inherit; transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--bg); color: var(--text);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.btn-block { width: 100%; justify-content: center; padding: 14px 24px; font-size: 1rem; }

.contact-map-carousel {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-md); margin-bottom: 20px;
  aspect-ratio: 3/2; background: var(--bg-muted);
}
.contact-map-carousel .carousel-slide img {
  width: 100%; height: 100%; object-fit: cover;
}
.contact-location-list {
  display: flex; flex-direction: column; gap: 8px;
  width: 100%;
}
.contact-location-item {
  padding: 10px 12px; border-radius: 8px;
  cursor: pointer; transition: all var(--transition);
  border: 1px solid transparent;
}
.contact-location-item:hover {
  background: var(--bg-muted);
}
.contact-location-item.active {
  background: var(--primary-soft); border-color: var(--primary);
  color: var(--primary);
}
.contact-location-label {
  font-weight: 700; margin-right: 6px;
}
.contact-location-name {
  font-weight: 600; display: block; margin-bottom: 2px;
}
.contact-location-address {
  font-size: 0.85rem; line-height: 1.5; opacity: 0.85;
}

.contact-details {
  background: #fff; padding: 24px; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md); border: 1px solid var(--border);
}
.contact-detail-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 12px 0; border-bottom: 1px solid var(--border-light);
  font-size: 0.93rem; color: var(--text-light);
}
.contact-detail-item:last-child { border-bottom: none; }
.contact-detail-icon {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--primary-soft); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 2px;
}
.contact-detail-icon svg { width: 16px; height: 16px; }

/* 表单提交成功反馈 */
.form-success {
  display: none; text-align: center; padding: 40px 20px;
}
.form-success.show { display: block; }
.form-success .success-icon {
  width: 64px; height: 64px; background: #dcfce7; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px; font-size: 28px; color: #16a34a;
}

/* ==================== 页脚 ==================== */
.footer {
  background: #0f172a; color: rgba(255,255,255,0.7);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px;
  padding-bottom: 48px;
}
.footer-logo-row { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo-img { height: 34px; width: auto; display: block; }
.footer-logo-text { font-size: 1.1rem; font-weight: 700; color: #fff; }
.footer-brand p { font-size: 0.9rem; line-height: 1.8; max-width: 320px; }

.footer-nav h4, .footer-contact-info h4 {
  color: rgba(255,255,255,0.9); font-size: 0.9rem; margin-bottom: 16px;
}
.footer-nav ul, .footer-contact-info ul { list-style: none; }
.footer-nav li { margin-bottom: 10px; }
.footer-nav a {
  font-size: 0.88rem; color: rgba(255,255,255,0.6);
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--primary); }
.footer-contact-info li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.88rem; margin-bottom: 12px;
}
.footer-contact-info svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 3px; color: var(--primary); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex; justify-content: space-between;
  font-size: 0.8rem; color: rgba(255,255,255,0.4);
}

/* ============================================================
   响应式设计
   ============================================================ */
@media (max-width: 1024px) {
  .values-grid { grid-template-columns: repeat(3, 1fr); }
  .values-grid .value-card:last-child { grid-column: span 3; justify-self: center; width: 33%; }
  .standards-grid { grid-template-columns: repeat(3, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-title { font-size: 1.7rem; }
  .section-header { margin-bottom: 40px; }

  /* Hero */
  .hero { min-height: auto; padding: 120px 0 60px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-title { font-size: 2rem; }
  .hero-image { max-width: 400px; margin: 0 auto; }
  .hero-float-card { left: -12px; bottom: -16px; }
  .carousel-arrow { width: 36px; height: 36px; font-size: 1.2rem; }
  .carousel-prev { left: 10px; }
  .carousel-next { right: 10px; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image { order: -1; max-width: 500px; margin: 0 auto; }
  .about-highlights { grid-template-columns: repeat(3, 1fr); }

  /* Culture */
  .culture-big-cards { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid .value-card:last-child { grid-column: span 2; width: 50%; }
  .culture-gradient-cards { grid-template-columns: 1fr; }
  .standards-grid { grid-template-columns: repeat(3, 1fr); }
  .culture-subtitle { font-size: 1.1rem; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }

  /* Gallery */
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom-inner { flex-direction: column; align-items: center; gap: 6px; text-align: center; }

  /* Nav */
  .nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .nav {
    position: fixed; top: 0; right: -100%; width: 75%; max-width: 300px;
    height: 100vh; background: #fff; padding: 80px 24px 24px;
    transition: right var(--transition); box-shadow: -4px 0 24px rgba(0,0,0,0.1);
  }
  .nav.open { right: 0; }
  .nav-list { flex-direction: column; gap: 2px; }
  .nav-link { font-size: 1rem; padding: 12px 16px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.6rem; }
  .hero-btns { flex-direction: column; gap: 12px; }
  .hero-btns .btn { justify-content: center; width: 100%; }
  .about-highlights { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .values-grid .value-card:last-child { grid-column: span 2; width: 50%; }
  .standards-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: 1fr; }
  .carousel-arrow { width: 32px; height: 32px; }
}