/* ===== 基础变量 ===== */
:root {
  --primary: #2e7d32;
  --primary-dark: #1b5e20;
  --primary-light: #4caf50;
  --accent: #ff8f00;
  --accent-light: #ffb300;
  --dark: #1a1a2e;
  --dark-light: #16213e;
  --text: #333;
  --text-light: #666;
  --text-muted: #999;
  --bg: #fafafa;
  --white: #fff;
  --glass: rgba(255,255,255,0.08);
  --glass-border: rgba(255,255,255,0.12);
  --shadow: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 36px; border-radius: 50px; font-size: 15px; font-weight: 600;
  transition: var(--transition); letter-spacing: 0.5px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white); box-shadow: 0 4px 20px rgba(46,125,50,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(46,125,50,0.4); }
.btn-outline {
  border: 2px solid rgba(255,255,255,0.6); color: var(--white);
  backdrop-filter: blur(4px);
}
.btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; }
.btn-full { width: 100%; }

/* ===== 导航栏 ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 20px 0; transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,0.95); backdrop-filter: blur(20px);
  padding: 12px 0; box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}
.nav-container {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 28px; }
.logo-text { font-size: 20px; font-weight: 700; color: var(--white); transition: var(--transition); }
.navbar.scrolled .logo-text { color: var(--primary-dark); }
.nav-links { display: flex; gap: 8px; }
.nav-link {
  padding: 8px 18px; border-radius: 50px; font-size: 14px; font-weight: 500;
  color: rgba(255,255,255,0.85); transition: var(--transition);
}
.nav-link:hover, .nav-link.active { background: rgba(255,255,255,0.15); color: #fff; }
.navbar.scrolled .nav-link { color: var(--text-light); }
.navbar.scrolled .nav-link:hover, .navbar.scrolled .nav-link.active {
  color: var(--primary); background: rgba(46,125,50,0.08);
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: #fff; transition: var(--transition); border-radius: 2px; }
.navbar.scrolled .nav-toggle span { background: var(--text); }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  justify-content: center; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #1a3a1a 0%, #0d2818 30%, #1a2e1a 60%, #0a1f0a 100%);
}
.hero-overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(46,125,50,0.3) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(76,175,80,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(255,143,0,0.08) 0%, transparent 40%);
}
.hero-particles {
  position: absolute; inset: 0; overflow: hidden;
}
.hero-content {
  position: relative; z-index: 2; text-align: center;
  padding: 120px 24px 80px; max-width: 900px;
}
.hero-badge {
  display: inline-block; padding: 8px 24px; border-radius: 50px;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.9); font-size: 14px; letter-spacing: 3px;
  backdrop-filter: blur(10px); margin-bottom: 28px;
}
.hero-title {
  font-size: clamp(36px, 6vw, 64px); font-weight: 800; color: var(--white);
  line-height: 1.2; margin-bottom: 24px;
}
.text-gradient {
  background: linear-gradient(135deg, #81c784, #ffb74d, #81c784);
  background-size: 200% auto;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  animation: shimmer 3s ease-in-out infinite;
}
@keyframes shimmer { 0%,100% { background-position: 0% center; } 50% { background-position: 200% center; } }
.hero-desc {
  font-size: 18px; color: rgba(255,255,255,0.7); max-width: 600px;
  margin: 0 auto 40px; line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 60px; }
.hero-stats {
  display: flex; justify-content: center; gap: 48px;
  padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.1);
}
.stat-item { text-align: center; }
.stat-num { font-size: 36px; font-weight: 800; color: var(--white); }
.stat-suffix { font-size: 24px; color: var(--accent-light); font-weight: 700; }
.stat-label { display: block; font-size: 13px; color: rgba(255,255,255,0.5); margin-top: 4px; }

.scroll-indicator {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(255,255,255,0.4); font-size: 12px; letter-spacing: 2px;
}
.scroll-arrow {
  width: 20px; height: 20px; border-right: 2px solid rgba(255,255,255,0.4);
  border-bottom: 2px solid rgba(255,255,255,0.4); transform: rotate(45deg);
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
  40% { transform: rotate(45deg) translateY(8px); }
  60% { transform: rotate(45deg) translateY(4px); }
}

/* ===== 通用 Section ===== */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block; font-size: 12px; letter-spacing: 4px; color: var(--primary);
  font-weight: 700; margin-bottom: 12px; text-transform: uppercase;
}
.section-title { font-size: clamp(28px, 4vw, 42px); font-weight: 800; color: var(--dark); }
.section-line {
  width: 60px; height: 3px; margin: 16px auto 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 3px;
}

/* ===== 关于我们 ===== */
.about { background: var(--white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-subtitle { font-size: 24px; color: var(--primary-dark); margin-bottom: 20px; }
.about-text { color: var(--text-light); line-height: 1.9; margin-bottom: 16px; font-size: 15px; }
.about-features { margin-top: 32px; display: flex; flex-direction: column; gap: 20px; }
.feature-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 16px; border-radius: var(--radius-sm);
  transition: var(--transition);
}
.feature-item:hover { background: rgba(46,125,50,0.04); }
.feature-icon { font-size: 32px; flex-shrink: 0; }
.feature-item h4 { font-size: 15px; color: var(--dark); margin-bottom: 4px; }
.feature-item p { font-size: 13px; color: var(--text-muted); }

.about-visual { display: flex; flex-direction: column; gap: 20px; }
.visual-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  padding: 48px 36px; min-height: 200px;
  display: flex; align-items: center;
}
.visual-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
}
.visual-bg.accent { background: linear-gradient(135deg, #fff3e0, #ffe0b2); }
.visual-content { position: relative; z-index: 1; }
.visual-icon { font-size: 40px; margin-bottom: 12px; }
.visual-card h3 { font-size: 20px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.visual-card p { font-size: 14px; color: var(--text-light); }
.visual-card.small { min-height: 140px; padding: 32px 36px; }

/* ===== 主营业务 ===== */
.business { background: var(--bg); }
.business-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.biz-card {
  background: var(--white); border-radius: var(--radius); padding: 40px 32px;
  text-align: center; transition: var(--transition); position: relative; overflow: hidden;
  box-shadow: var(--shadow);
}
.biz-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.biz-icon-wrap {
  width: 80px; height: 80px; border-radius: 50%; margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
  transition: var(--transition);
}
.biz-card:hover .biz-icon-wrap { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.biz-icon { font-size: 36px; transition: var(--transition); }
.biz-card:hover .biz-icon { transform: scale(1.1); }
.biz-card h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 12px; }
.biz-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
.biz-line {
  position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0); transition: var(--transition);
}
.biz-card:hover .biz-line { transform: scaleX(1); }

/* ===== 商品展示 ===== */
.products { background: var(--white); }
.product-filter {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 40px;
}
.filter-btn {
  padding: 10px 24px; border-radius: 50px; font-size: 14px; font-weight: 500;
  color: var(--text-light); background: var(--bg); border: 1px solid #eee;
  transition: var(--transition);
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.filter-btn.active {
  background: var(--primary); color: var(--white); border-color: var(--primary);
}
.product-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  min-height: 200px;
}
.product-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06); transition: var(--transition);
  border: 1px solid #f0f0f0;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-img-wrap {
  position: relative; padding-top: 100%; background: #f5f5f5; overflow: hidden;
}
.product-img-wrap img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: var(--transition);
}
.product-card:hover .product-img-wrap img { transform: scale(1.05); }
.product-carousel-track {
  position: absolute; inset: 0;
}
.product-carousel-slide {
  position: absolute; inset: 0;
  opacity: 0; visibility: hidden;
  transition: opacity .32s ease, visibility .32s ease;
}
.product-carousel-slide.active {
  opacity: 1; visibility: visible;
}
.product-carousel-slide img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
.product-carousel-nav {
  position: absolute; top: 50%; left: 10px; right: 10px;
  display: flex; justify-content: space-between;
  transform: translateY(-50%);
  pointer-events: none; opacity: 0;
  transition: opacity .25s ease;
}
.product-card:hover .product-carousel-nav,
.product-carousel-nav.show {
  opacity: 1;
}
.product-carousel-btn {
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(17, 24, 39, 0.55); color: #fff; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  pointer-events: auto; backdrop-filter: blur(6px);
  transition: background .2s ease, transform .2s ease;
}
.product-carousel-btn:hover {
  background: rgba(17, 24, 39, 0.8);
  transform: scale(1.05);
}
.product-carousel-dots {
  position: absolute; left: 50%; bottom: 12px; transform: translateX(-50%);
  display: flex; align-items: center; gap: 6px;
  padding: 6px 10px; border-radius: 999px;
  background: rgba(17, 24, 39, 0.24); backdrop-filter: blur(10px);
}
.product-carousel-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: rgba(255,255,255,0.45);
  transition: var(--transition);
}
.product-carousel-dot.active {
  width: 18px; border-radius: 999px; background: #fff;
}
.product-tags {
  position: absolute; top: 10px; left: 10px; display: flex; gap: 6px;
  z-index: 2;
}
.product-tag {
  padding: 3px 10px; border-radius: 4px; font-size: 11px; font-weight: 600; color: #fff;
}
.product-tag.hot { background: #ff5722; }
.product-tag.new { background: var(--primary); }
.product-info { padding: 16px; }
.product-name {
  font-size: 14px; font-weight: 600; color: var(--dark); margin-bottom: 6px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; line-height: 1.5; height: 42px;
}
.product-cat { font-size: 12px; color: var(--text-muted); margin-bottom: 10px; }
.product-price-row { display: flex; align-items: baseline; gap: 8px; }
.product-price { font-size: 18px; font-weight: 800; color: #e53935; }
.product-original { font-size: 12px; color: var(--text-muted); text-decoration: line-through; }
.product-action-row {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 10px;
  margin-top: 14px;
}
.product-detail-btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 14px;
  min-height: 44px;
  border: 1px solid rgba(46, 125, 50, 0.18);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  color: var(--primary-dark);
  background: linear-gradient(180deg, #f8fcf8, #eef8f0);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.7);
  transition: var(--transition);
}
.product-detail-btn:hover {
  background: linear-gradient(180deg, #f2fbf3, #e6f4e8);
  border-color: rgba(46, 125, 50, 0.3);
  transform: translateY(-1px);
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  min-height: 44px;
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  justify-content: center;
  white-space: nowrap;
}
.contact-btn:hover {
  background: linear-gradient(135deg, #059669, #047857);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}
.product-placeholder {
  display: flex; align-items: center; justify-content: center;
  padding-top: 100%; position: relative; background: linear-gradient(135deg, #e8f5e9, #f1f8e9);
}
.product-placeholder span {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  font-size: 48px;
}
.product-more { text-align: center; margin-top: 40px; }

.loading-spinner { grid-column: 1/-1; text-align: center; padding: 60px 0; }
.spinner {
  width: 40px; height: 40px; border: 3px solid #eee;
  border-top-color: var(--primary); border-radius: 50%;
  animation: spin 0.8s linear infinite; margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-spinner p { color: var(--text-muted); font-size: 14px; }

/* ===== 商品详情弹窗 ===== */
.product-modal {
  position: fixed; inset: 0; z-index: 1200;
  display: none;
}
.product-modal.open {
  display: block;
}
.product-modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(15, 23, 42, 0.54);
  backdrop-filter: blur(6px);
}
.product-modal-panel {
  position: relative;
  width: min(1040px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  margin: 24px auto;
  background: #fff;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 28px 90px rgba(15, 23, 42, 0.22);
}
.product-modal-close {
  position: absolute; top: 16px; right: 16px; z-index: 4;
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.92);
  color: #1f2937; font-size: 26px; line-height: 1;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.14);
}
.product-modal-body {
  max-height: calc(100vh - 48px);
  overflow-y: auto;
}
.product-modal-loading {
  padding: 72px 24px;
  text-align: center;
}
.product-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
}
.product-detail-media {
  position: sticky; top: 0;
  align-self: start;
  min-height: 100%;
  padding: 28px;
  background:
    radial-gradient(circle at top left, rgba(46,125,50,0.14), transparent 30%),
    linear-gradient(180deg, #f3faf4 0%, #eef5ef 100%);
}
.product-detail-carousel {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 18px 40px rgba(31, 41, 55, 0.08);
}
.product-detail-main {
  position: relative;
  aspect-ratio: 1 / 1;
  background: #f8fafc;
}
.product-detail-slide {
  position: absolute; inset: 0;
  opacity: 0; visibility: hidden;
  transition: opacity .35s ease;
}
.product-detail-slide.active {
  opacity: 1; visibility: visible;
}
.product-detail-slide img {
  width: 100%; height: 100%; object-fit: cover;
}
.product-detail-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 60px;
  background: linear-gradient(135deg, #e8f5e9, #f3f6e9);
}
.product-detail-nav {
  position: absolute; top: 50%; left: 18px; right: 18px;
  display: flex; justify-content: space-between;
  transform: translateY(-50%);
}
.product-detail-nav button {
  width: 42px; height: 42px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(17, 24, 39, 0.56); color: #fff; font-size: 22px;
  backdrop-filter: blur(8px);
}
.product-detail-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(78px, 1fr));
  gap: 10px;
  padding: 14px;
}
.product-detail-thumb {
  border-radius: 14px;
  overflow: hidden;
  border: 2px solid transparent;
  background: #fff;
  cursor: pointer;
  transition: var(--transition);
}
.product-detail-thumb.active {
  border-color: var(--primary);
  box-shadow: 0 8px 18px rgba(46,125,50,0.18);
}
.product-detail-thumb img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}
.product-detail-content {
  padding: 36px 34px 40px;
}
.product-detail-tag-row {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.product-detail-tag {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px; font-weight: 700;
  background: rgba(46,125,50,0.08);
  color: var(--primary-dark);
}
.product-detail-tag.hot {
  background: rgba(255,87,34,0.12);
  color: #e64a19;
}
.product-detail-tag.new {
  background: rgba(46,125,50,0.12);
  color: var(--primary-dark);
}
.product-detail-title {
  margin-top: 16px;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.25;
  color: var(--dark);
}
.product-detail-category {
  margin-top: 12px;
  font-size: 14px;
  color: var(--text-muted);
}
.product-detail-price {
  display: flex; align-items: baseline; gap: 10px;
  margin-top: 22px;
}
.product-detail-price .current {
  font-size: 34px; font-weight: 800; color: #e53935;
}
.product-detail-price .original {
  font-size: 16px; color: var(--text-muted); text-decoration: line-through;
}
.product-detail-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}
.product-detail-meta-item {
  padding: 14px 16px;
  border-radius: 16px;
  background: #f8faf8;
  border: 1px solid #edf3ee;
}
.product-detail-meta-label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
}
.product-detail-meta-value {
  display: block;
  margin-top: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
}
.product-detail-actions {
  display: flex; gap: 12px; margin-top: 24px;
}
.product-detail-contact {
  flex: 1;
}
.product-detail-actions .btn-outline {
  color: var(--primary-dark);
  border-color: rgba(46, 125, 50, 0.18);
  background: rgba(46,125,50,0.04);
}
.product-detail-actions .btn-outline:hover {
  background: rgba(46,125,50,0.1);
  border-color: rgba(46, 125, 50, 0.28);
}
.product-detail-desc {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid #eef2ef;
}
.product-detail-desc h3 {
  font-size: 18px; color: var(--dark); margin-bottom: 14px;
}
.product-detail-rich {
  color: var(--text-light);
  line-height: 1.85;
  word-break: break-word;
}
.product-detail-loading-inline {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 14px;
}
.product-detail-loading-inline .spinner {
  width: 24px;
  height: 24px;
  margin: 0;
}
.product-detail-rich p:last-child {
  margin-bottom: 0;
}
.product-detail-empty {
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== 联系我们 ===== */
.contact { background: var(--bg); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-item { display: flex; gap: 20px; align-items: flex-start; }
.contact-icon {
  font-size: 28px; width: 56px; height: 56px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
  border-radius: 12px;
}
.contact-item h4 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.contact-item p { font-size: 14px; color: var(--text-light); }
.contact-form-wrap {
  background: var(--white); border-radius: var(--radius); padding: 36px;
  box-shadow: var(--shadow);
}
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: flex; gap: 16px; }
.form-row input { flex: 1; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 14px 18px; border: 1px solid #e0e0e0;
  border-radius: var(--radius-sm); font-size: 14px; transition: var(--transition);
  outline: none; background: var(--bg);
}
.contact-form input:focus, .contact-form textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(46,125,50,0.1);
}
.contact-form textarea { resize: vertical; min-height: 100px; }

/* ===== 页脚 ===== */
.footer {
  background: var(--dark); color: rgba(255,255,255,0.7); padding: 60px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo { font-size: 22px; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 360px; }
.footer-links h4 { color: var(--white); font-size: 15px; margin-bottom: 16px; }
.footer-links a {
  display: block; font-size: 14px; padding: 6px 0; transition: var(--transition);
}
.footer-links a:hover { color: var(--primary-light); transform: translateX(4px); }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 13px; }
.footer-bottom a { color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ===== 右下角悬浮按钮 ===== */
.floating-contact-group {
  position: fixed; right: 30px; bottom: 30px;
  display: flex; flex-direction: column; align-items: flex-end; gap: 12px;
  z-index: 999;
}
.floating-contact-btn,
.back-top {
  position: relative;
  width: 54px; height: 54px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--white);
  box-shadow: 0 10px 26px rgba(17,24,39,0.18);
  transition: transform .24s ease, box-shadow .24s ease, opacity .24s ease, visibility .24s ease;
}
.floating-contact-btn::after,
.back-top::after {
  content: attr(data-label);
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%) translateX(8px);
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(17,24,39,0.92);
  color: #fff;
  font-size: 13px;
  line-height: 1;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
}
.floating-contact-btn:hover::after,
.back-top:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}
.floating-contact-btn:hover,
.back-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(17,24,39,0.24);
}
.floating-contact-phone {
  background: linear-gradient(135deg, #f59e0b, #f97316);
}
.floating-contact-wechat {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}
.floating-contact-icon {
  font-size: 22px;
  line-height: 1;
}
.floating-contact-icon-text {
  font-size: 20px;
  font-weight: 700;
}
.back-top {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  font-size: 22px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}
.back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .product-detail-layout { grid-template-columns: 1fr; }
  .product-detail-media { position: relative; }
}
@media (max-width: 768px) {
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(255,255,255,0.98); backdrop-filter: blur(20px);
    flex-direction: column; padding: 16px; gap: 4px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
  }
  .nav-links.open { display: flex; }
  .nav-links .nav-link { color: var(--text); padding: 12px 16px; border-radius: var(--radius-sm); }
  .nav-links .nav-link:hover, .nav-links .nav-link.active { background: rgba(46,125,50,0.08); color: var(--primary); }
  .nav-toggle { display: flex; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  .stat-item { width: calc(50% - 12px); }
  .hero-actions { flex-direction: column; align-items: center; }
  .business-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row { flex-direction: column; }
  .section { padding: 60px 0; }
  .product-action-row { flex-direction: column; }
  .product-detail-content { padding: 26px 20px 28px; }
  .product-detail-media { padding: 18px; }
  .product-detail-meta { grid-template-columns: 1fr; }
  .product-detail-actions { flex-direction: column; }
  .product-modal-panel { width: min(100vw, calc(100vw - 12px)); margin: 6px auto; max-height: calc(100vh - 12px); border-radius: 22px; }
  .product-modal-body { max-height: calc(100vh - 12px); }
  .floating-contact-group { right: 18px; bottom: 18px; gap: 10px; }
  .floating-contact-btn,
  .back-top { width: 50px; height: 50px; }
  .floating-contact-btn::after,
  .back-top::after { display: none; }
}
@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .hero-content { padding: 100px 16px 60px; }
  .hero-stats { gap: 16px; }
  .product-info { padding: 14px; }
  .product-detail-title { font-size: 26px; }
  .product-detail-price .current { font-size: 28px; }
  .product-detail-thumbs { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .product-carousel-btn { width: 30px; height: 30px; font-size: 16px; }
  .floating-contact-group { right: 14px; bottom: 14px; }
  .floating-contact-btn,
  .back-top { width: 48px; height: 48px; }
  .floating-contact-icon { font-size: 20px; }
  .floating-contact-icon-text { font-size: 18px; }
}