/* ============================================================
   吖靓宠物 - 主样式表
   湖南吖靓信息科技有限公司
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --primary: #FF6B35;
  --primary-dark: #e85a24;
  --primary-light: #fff0ea;
  --secondary: #4CAF82;
  --accent: #FFB347;
  --dark: #1a1a2e;
  --dark2: #16213e;
  --text: #333;
  --text-light: #666;
  --text-muted: #999;
  --border: #eee;
  --bg: #f8f9fa;
  --bg2: #fff;
  --white: #fff;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 40px rgba(255,107,53,0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s ease;
  --font: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ---------- 全局重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg2); line-height: 1.7; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; outline: none; background: none; }
input, textarea { font-family: var(--font); }

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

/* ---------- 顶部公告栏 ---------- */
.top-bar {
  background: var(--dark);
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  padding: 8px 0;
}
.top-bar .container {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.top-bar span { display: flex; align-items: center; gap: 6px; }
.top-bar i { color: var(--primary); }
.top-bar-right { margin-left: auto; }
.top-bar-right a { color: rgba(255,255,255,0.75); margin: 0 6px; transition: color var(--transition); }
.top-bar-right a:hover { color: var(--primary); }

/* ---------- 导航栏 ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
  transition: all var(--transition);
}
.nav-inner {
  display: flex;
  align-items: center;
  height: 70px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon { font-size: 32px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-main { font-size: 20px; font-weight: 700; color: var(--primary); }
.logo-sub { font-size: 11px; color: var(--text-muted); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-btn-supplier {
  background: var(--primary) !important;
  color: var(--white) !important;
  border-radius: 25px !important;
  padding: 8px 20px !important;
}
.nav-btn-supplier:hover {
  background: var(--primary-dark) !important;
  color: var(--white) !important;
}
.nav-actions { display: flex; gap: 8px; }
.btn-search, .btn-menu {
  width: 38px; height: 38px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-light);
  transition: all var(--transition);
}
.btn-search:hover, .btn-menu:hover { background: var(--bg); color: var(--primary); }
.btn-menu { display: none; }
.mobile-menu {
  display: none;
  background: white;
  padding: 10px 20px 16px;
  border-top: 1px solid var(--border);
}
.mobile-menu a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.mobile-menu.open { display: block; }

/* ---------- 通用按钮 ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  background: var(--primary);
  color: white;
  border-radius: 30px;
  font-weight: 600;
  font-size: 15px;
  transition: all var(--transition);
  box-shadow: 0 4px 15px rgba(255,107,53,0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255,107,53,0.4);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 2px solid rgba(255,255,255,0.6);
  color: white;
  border-radius: 30px;
  font-weight: 600;
  font-size: 15px;
  transition: all var(--transition);
  backdrop-filter: blur(4px);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: white;
  transform: translateY(-2px);
}

/* ---------- section-header 通用 ---------- */
.section-header {
  text-align: center;
  margin-bottom: 50px;
}
.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 5px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}
.section-header p { color: var(--text-light); font-size: 16px; }
.section-header.light h2 { color: white; }
.section-header.light p { color: rgba(255,255,255,0.7); }
.section-header.light .section-tag {
  background: rgba(255,255,255,0.15);
  color: white;
}

/* ---------- Hero Slider ---------- */
.hero {
  position: relative;
  height: 680px;
  overflow: hidden;
}
.hero-slider { width: 100%; height: 100%; position: relative; }
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.hero-slide.active { opacity: 1; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(26,26,46,0.75) 0%, rgba(26,26,46,0.3) 100%);
}
.hero-content {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  width: 100%;
  max-width: 700px;
  padding: 0 20px;
  color: white;
  z-index: 2;
}
.hero-badge {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-content h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.highlight { color: var(--accent); }
.hero-content p {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  letter-spacing: 1px;
}
.hero-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.hero-controls {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}
.hero-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  transition: all var(--transition);
}
.hero-dot.active { background: white; width: 28px; border-radius: 5px; }
.hero-prev, .hero-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 46px; height: 46px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(4px);
  border-radius: 50%;
  color: white;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  border: 1px solid rgba(255,255,255,0.3);
}
.hero-prev { left: 24px; }
.hero-next { right: 24px; }
.hero-prev:hover, .hero-next:hover { background: var(--primary); border-color: var(--primary); }

/* ---------- 统计数字栏 ---------- */
.stats-bar {
  background: var(--dark);
  padding: 30px 0;
}
.stats-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.stat-item {
  flex: 1;
  text-align: center;
  color: white;
  padding: 10px 20px;
}
.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent);
  display: inline;
}
.stat-unit {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}
.stat-label {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}
.stat-divider {
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,0.15);
}

/* ---------- 服务板块 ---------- */
.services {
  padding: 90px 0;
  background: var(--bg);
}
.service-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.service-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: block;
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}
.service-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.service-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.service-card:hover .service-img-wrap img { transform: scale(1.08); }
.service-overlay {
  position: absolute; inset: 0;
  background: rgba(255,107,53,0.75);
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 16px;
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover .service-overlay { opacity: 1; }
.service-info { padding: 22px 20px; }
.service-icon {
  width: 46px; height: 46px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin-bottom: 12px;
}
.service-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.service-info p { font-size: 13px; color: var(--text-light); line-height: 1.6; margin-bottom: 14px; }
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.service-tags li {
  background: var(--bg);
  color: var(--text-light);
  padding: 3px 10px;
  border-radius: 10px;
  font-size: 12px;
}

/* ---------- 宠物食品展示 ---------- */
.featured-food {
  padding: 90px 0;
  background: white;
}
.food-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.food-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: white;
  transition: all var(--transition);
}
.food-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.food-img-wrap {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.food-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.food-card:hover .food-img-wrap img { transform: scale(1.06); }
.food-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--primary);
  color: white;
  padding: 3px 10px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 600;
}
.food-badge.new { background: var(--secondary); }
.food-badge.sale { background: #e74c3c; }
.food-info { padding: 16px; }
.food-supplier {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 5px;
}
.food-supplier i { color: var(--primary); }
.food-info h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
  line-height: 1.4;
}
.food-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 14px;
}
.food-tags span {
  background: var(--primary-light);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 500;
}
.food-price-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.food-price { font-size: 20px; font-weight: 700; color: var(--primary); }
.food-unit { font-size: 12px; color: var(--text-muted); flex: 1; }
.food-btn {
  background: var(--primary);
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  transition: all var(--transition);
}
.food-btn:hover { background: var(--primary-dark); }
.view-more-wrap { text-align: center; margin-top: 40px; }
.btn-view-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 36px;
  border: 2px solid var(--primary);
  color: var(--primary);
  border-radius: 30px;
  font-weight: 600;
  font-size: 15px;
  transition: all var(--transition);
}
.btn-view-more:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

/* ---------- 供应商入驻横幅 ---------- */
.supplier-banner {
  padding: 80px 0;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  position: relative;
  overflow: hidden;
}
.supplier-banner::before {
  content: '🐾';
  position: absolute;
  font-size: 300px;
  opacity: 0.04;
  right: -50px;
  top: -80px;
  line-height: 1;
}
.supplier-banner-inner {
  display: flex;
  align-items: center;
  gap: 60px;
}
.supplier-banner-left { flex: 1; color: white; }
.banner-tag {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 5px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.supplier-banner-left h2 {
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 14px;
  line-height: 1.2;
}
.supplier-banner-left p {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 24px;
}
.banner-benefits {
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.banner-benefits li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.85);
  font-size: 15px;
}
.banner-benefits i { color: var(--secondary); font-size: 16px; }
.supplier-banner-right { flex: 1; }
.supplier-banner-right img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

/* ---------- 为何选择 ---------- */
.why-us {
  padding: 90px 0;
  background: linear-gradient(135deg, var(--primary) 0%, #e85a24 100%);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.why-item {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  color: white;
  border: 1px solid rgba(255,255,255,0.15);
  transition: all var(--transition);
}
.why-item:hover {
  background: rgba(255,255,255,0.18);
  transform: translateY(-6px);
}
.why-icon {
  width: 64px; height: 64px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  margin: 0 auto 18px;
  color: white;
}
.why-item h4 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.why-item p { font-size: 14px; color: rgba(255,255,255,0.8); line-height: 1.7; }

/* ---------- 新闻资讯 ---------- */
.news {
  padding: 90px 0;
  background: var(--bg);
}
.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}
.news-card { background: white; border-radius: var(--radius); overflow: hidden; transition: all var(--transition); }
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.news-card.featured { display: flex; flex-direction: column; }
.news-card.featured .news-img { height: 260px; position: relative; }
.news-card.featured .news-img img { width: 100%; height: 100%; object-fit: cover; }
.news-category {
  position: absolute;
  bottom: 14px; left: 14px;
  background: var(--primary);
  color: white;
  padding: 4px 12px;
  border-radius: 10px;
  font-size: 12px;
}
.news-card.featured .news-content { padding: 24px; flex: 1; }
.news-date { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 5px; margin-bottom: 10px; }
.news-card.featured h3 { font-size: 20px; font-weight: 700; color: var(--dark); margin-bottom: 12px; line-height: 1.4; }
.news-card.featured p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; }
.news-link { color: var(--primary); font-size: 13px; font-weight: 600; display: inline-flex; align-items: center; gap: 5px; }
.news-link:hover i { transform: translateX(3px); }
.news-link i { transition: transform var(--transition); }
.news-side { display: flex; flex-direction: column; gap: 16px; }
.news-card.small { display: flex; align-items: center; gap: 14px; padding: 14px; }
.news-img-small { width: 90px; height: 75px; flex-shrink: 0; border-radius: var(--radius-sm); overflow: hidden; }
.news-img-small img { width: 100%; height: 100%; object-fit: cover; }
.news-card.small .news-content { flex: 1; }
.news-card.small h4 { font-size: 14px; font-weight: 600; color: var(--dark); margin-bottom: 8px; line-height: 1.4; }

/* ---------- 用户评价 ---------- */
.testimonials {
  padding: 90px 0;
  background: white;
}
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 30px;
  transition: all var(--transition);
  border: 1px solid var(--border);
  position: relative;
}
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 20px; right: 24px;
  font-size: 80px;
  color: var(--primary-light);
  font-family: Georgia, serif;
  line-height: 1;
}
.testimonial-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--primary); }
.stars { color: var(--accent); font-size: 18px; margin-bottom: 14px; }
.testimonial-card p { font-size: 14px; color: var(--text-light); line-height: 1.8; margin-bottom: 20px; }
.testimonial-user { display: flex; align-items: center; gap: 12px; }
.testimonial-user img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; }
.user-name { display: block; font-weight: 600; font-size: 15px; color: var(--dark); }
.user-info { display: block; font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ---------- 联系我们 ---------- */
.contact {
  padding: 90px 0;
  background: var(--bg);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 22px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-icon {
  width: 48px; height: 48px; flex-shrink: 0;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.contact-item h4 { font-size: 14px; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.contact-item p { font-size: 15px; color: var(--text-light); }
.contact-qr { display: flex; gap: 16px; margin-top: 10px; }
.qr-box {
  flex: 1;
  background: white;
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  border: 1px solid var(--border);
}
.qr-box i { font-size: 36px; color: var(--primary); display: block; margin-bottom: 8px; }
.qr-box span { font-size: 13px; color: var(--text-muted); }
.contact-form {
  background: white;
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}
.contact-form h3 { font-size: 22px; font-weight: 700; color: var(--dark); margin-bottom: 24px; }
.contact-form form { display: flex; flex-direction: column; gap: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form input, .contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  transition: border-color var(--transition);
  background: var(--bg);
}
.contact-form input:focus, .contact-form textarea:focus {
  border-color: var(--primary);
  outline: none;
  background: white;
}
.contact-form textarea { resize: vertical; }

/* ---------- 页脚 ---------- */
.footer { background: var(--dark2); color: rgba(255,255,255,0.7); }
.footer-top { padding: 60px 0 40px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand p { font-size: 14px; line-height: 1.8; margin: 16px 0 20px; }
.social-links { display: flex; gap: 10px; }
.social-links a {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  color: rgba(255,255,255,0.6);
  transition: all var(--transition);
}
.social-links a:hover { background: var(--primary); color: white; }
.footer-links h4 { font-size: 15px; font-weight: 600; color: white; margin-bottom: 16px; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,0.6); transition: color var(--transition); }
.footer-links a:hover { 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;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.4); transition: color var(--transition); }
.footer-bottom a:hover { color: var(--primary); }

/* ---------- 悬浮客服 ---------- */
.float-service { position: fixed; right: 24px; bottom: 80px; z-index: 999; }
.float-btn {
  width: 52px; height: 52px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 20px rgba(255,107,53,0.4);
  transition: all var(--transition);
  cursor: pointer;
}
.float-btn:hover { transform: scale(1.1); background: var(--primary-dark); }
.float-menu {
  position: absolute;
  bottom: 60px; right: 0;
  background: white;
  border-radius: var(--radius);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
  overflow: hidden;
  display: none;
  min-width: 130px;
}
.float-menu.open { display: block; }
.float-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text);
  transition: background var(--transition);
}
.float-item:hover { background: var(--primary-light); color: var(--primary); }
.float-item i { width: 18px; color: var(--primary); }

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  width: 44px; height: 44px;
  background: var(--dark);
  color: white;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--primary); transform: translateY(-3px); }

/* ---------- 供应商入驻页 专用 ---------- */
.supplier-hero {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 60%, #0f3460 100%);
  padding: 80px 0;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}
.supplier-hero::after {
  content: '🐾';
  position: absolute;
  font-size: 400px;
  opacity: 0.03;
  right: -100px;
  top: -120px;
}
.supplier-hero h1 { font-size: 48px; font-weight: 800; margin-bottom: 16px; }
.supplier-hero p { font-size: 18px; color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto 32px; }

.process-section { padding: 90px 0; background: var(--bg); }
.process-steps {
  display: flex;
  gap: 0;
  align-items: flex-start;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 48px;
  left: calc(12.5% - 0px);
  right: calc(12.5% - 0px);
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  z-index: 0;
}
.process-step {
  flex: 1;
  text-align: center;
  padding: 0 16px;
  position: relative;
  z-index: 1;
}
.step-circle {
  width: 60px; height: 60px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  font-weight: 800;
  margin: 0 auto 18px;
  box-shadow: 0 4px 16px rgba(255,107,53,0.35);
  border: 4px solid white;
}
.process-step h4 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.process-step p { font-size: 13px; color: var(--text-light); line-height: 1.6; }

.apply-section { padding: 90px 0; }
.apply-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}
.apply-info h2 { font-size: 32px; font-weight: 700; color: var(--dark); margin-bottom: 16px; }
.apply-info > p { font-size: 16px; color: var(--text-light); margin-bottom: 30px; line-height: 1.8; }
.apply-benefits {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.benefit-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}
.benefit-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }
.benefit-item h5 { font-size: 15px; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.benefit-item p { font-size: 13px; color: var(--text-light); line-height: 1.6; }

.apply-form-card {
  background: white;
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.08);
  border: 1px solid var(--border);
}
.apply-form-card h3 { font-size: 24px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.apply-form-card > p { font-size: 14px; color: var(--text-muted); margin-bottom: 28px; }
.apply-form { display: flex; flex-direction: column; gap: 16px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 7px;
}
.form-group label span { color: var(--primary); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  transition: border-color var(--transition);
  font-family: var(--font);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  outline: none;
  background: white;
}
.form-group textarea { resize: vertical; }
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--text-light);
}
.form-check input { width: auto; margin-top: 2px; }
.form-check a { color: var(--primary); }
.btn-submit {
  padding: 15px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 8px;
  box-shadow: 0 4px 16px rgba(255,107,53,0.3);
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,107,53,0.4); }

.faq-section { padding: 90px 0; background: var(--bg); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: white;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all var(--transition);
}
.faq-question:hover { background: var(--primary-light); color: var(--primary); }
.faq-question.open { color: var(--primary); background: var(--primary-light); }
.faq-question i { transition: transform var(--transition); }
.faq-question.open i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 22px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}
.faq-answer.open { max-height: 200px; padding: 0 22px 18px; }

/* ---- 宠物医院页 ---- */
.page-hero {
  height: 320px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  color: white;
}
.page-hero-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.5); }
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 { font-size: 42px; font-weight: 800; margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: rgba(255,255,255,0.85); }
.breadcrumb {
  background: white;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--primary); }
.breadcrumb span { margin: 0 8px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .service-cards { grid-template-columns: repeat(2, 1fr); }
  .food-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .supplier-banner-inner { gap: 30px; }
  .supplier-banner-right img { max-height: 320px; object-fit: cover; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .apply-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .btn-menu { display: flex; }
  .hero { height: 520px; }
  .hero-content h1 { font-size: 34px; }
  .service-cards { grid-template-columns: 1fr; }
  .food-grid { grid-template-columns: 1fr; }
  .stats-inner { flex-wrap: wrap; gap: 20px; }
  .stat-divider { display: none; }
  .supplier-banner-inner { flex-direction: column; }
  .supplier-banner-right { display: none; }
  .why-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .process-steps { flex-direction: column; }
  .process-steps::before { display: none; }
  .top-bar .container { gap: 12px; font-size: 12px; }
  .top-bar-right { margin-left: 0; }
}