/* ============ 全局 ============ */
:root {
  --green: #2d6a4f;
  --green-dark: #1b4332;
  --green-light: #52b788;
  --gold: #d4a373;
  --gold-dark: #b08968;
  --cream: #faf6ef;
  --ink: #2b2b2b;
  --gray: #6b6b6b;
  --line: #e8e2d8;
  --white: #ffffff;
  --shadow: 0 8px 30px rgba(27, 67, 50, 0.08);
  --radius: 14px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 15px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

/* ============ 顶部栏 ============ */
.topbar {
  background: var(--green-dark);
  color: #d9e7df;
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
}
.topbar a { color: #d9e7df; }
.topbar a:hover { color: #fff; }
.topbar .right span { margin-left: 18px; }

/* ============ 导航栏 ============ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s;
}
.navbar.scrolled { box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06); }
.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 104px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo .logo-icon {
  width: 88px; height: 88px;
  background: linear-gradient(135deg, var(--green), var(--green-light));
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 40px;
}
.logo .logo-text { line-height: 1.2; }
.logo .logo-icon.has-image {
  background: transparent;
  border-radius: 0;
  overflow: hidden;
}
.logo .logo-icon.has-image img {
  width: 100%; height: 100%;
  object-fit: contain;
  display: block;
}
.logo .logo-text b { font-size: 20px; color: var(--green-dark); letter-spacing: 1px; }
.logo .logo-text span { font-size: 12px; color: var(--gray); display: block; }

.nav-links { display: flex; gap: 4px; }
.nav-links a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--ink);
  position: relative;
  transition: all 0.25s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--green); background: rgba(45, 106, 79, 0.08); }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 50%; bottom: 2px;
  width: 0; height: 2px;
  background: var(--green);
  transition: all 0.25s;
  transform: translateX(-50%);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 60%; }

.nav-cta {
  background: var(--gold);
  color: #fff !important;
  padding: 10px 20px !important;
  border-radius: 24px !important;
  font-weight: 600;
}
.nav-cta:hover { background: var(--gold-dark); color: #fff !important; }
.nav-cta::after { display: none !important; }

/* 移动端菜单按钮 */
.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.menu-btn span {
  width: 24px; height: 2px;
  background: var(--green-dark);
  transition: all 0.3s;
}

/* ============ 首页 Banner ============ */
.banner { position: relative; overflow: hidden; }
.banner-slides { position: relative; height: 560px; }
.banner-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
}
.banner-slide.active { opacity: 1; z-index: 1; }
.banner-slide::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(27, 67, 50, 0.78) 0%, rgba(27, 67, 50, 0.35) 55%, rgba(0,0,0,0.1) 100%);
}
.banner-content {
  position: relative; z-index: 2;
  color: #fff;
  max-width: 640px;
}
.banner-content .tag {
  display: inline-block;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.4);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  margin-bottom: 22px;
  letter-spacing: 2px;
}
.banner-content h1 {
  font-size: 48px;
  line-height: 1.28;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 1px;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.25);
}
.banner-content p {
  font-size: 17px;
  line-height: 1.8;
  opacity: 0.94;
  margin-bottom: 30px;
  font-weight: 400;
}
.banner-btn {
  display: inline-block;
  background: var(--gold);
  color: #fff;
  padding: 14px 36px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s;
}
.banner-btn:hover { background: var(--gold-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.2); }

.banner-dots {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 10px;
}
.banner-dots span {
  width: 30px; height: 4px;
  background: rgba(255,255,255,0.4);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s;
}
.banner-dots span.active { background: var(--gold); width: 44px; }

.banner-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s;
}
.banner-arrow:hover { background: rgba(255,255,255,0.4); }
.banner-arrow.prev { left: 30px; }
.banner-arrow.next { right: 30px; }

/* ============ 卖点栏 ============ */
.highlights {
  background: var(--green-dark);
  color: #fff;
}
.highlights .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 36px 24px;
}
.highlight-item { display: flex; align-items: center; gap: 16px; }
.highlight-item .icon {
  width: 52px; height: 52px;
  background: rgba(255,255,255,0.12);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.highlight-item b { display: block; font-size: 16px; }
.highlight-item span { font-size: 13px; color: #bcd6c8; }

/* ============ 通用 section ============ */
.section { padding: 80px 0; }
.section.alt { background: var(--cream); }
.section-head { text-align: center; margin-bottom: 50px; }
.section-head .subtitle {
  color: var(--gold-dark);
  font-size: 14px;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: 36px;
  color: var(--green-dark);
  font-weight: 800;
  margin-bottom: 14px;
}
.section-head .line {
  width: 60px; height: 3px;
  background: var(--gold);
  margin: 0 auto;
  border-radius: 2px;
}

/* ============ 关于我们 ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-img {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about-img .badge {
  position: absolute;
  bottom: 24px; left: 24px;
  background: var(--gold);
  color: #fff;
  padding: 14px 22px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 18px;
}
.about-text h3 { font-size: 24px; color: var(--green-dark); margin-bottom: 18px; }
.about-text p { color: var(--gray); margin-bottom: 16px; }
.about-features { margin-top: 24px; display: grid; gap: 12px; }
.about-features li { display: flex; align-items: flex-start; gap: 10px; }
.about-features li::before {
  content: '✓';
  color: var(--green);
  font-weight: 700;
  background: rgba(45, 106, 79, 0.1);
  width: 24px; height: 24px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 13px;
}

/* ============ 项目背景 ============ */
.background-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.background-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 30px;
  text-align: center;
  transition: all 0.35s;
}
.background-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(27,67,50,0.14);
}
.background-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  background: rgba(45, 106, 79, 0.1);
  border-radius: 50%;
}
.background-card h4 {
  font-size: 19px;
  color: var(--green-dark);
  margin-bottom: 14px;
  font-weight: 700;
}
.background-card p {
  color: var(--gray);
  font-size: 14px;
  line-height: 1.9;
  text-align: left;
}
@media (max-width: 768px) {
  .background-grid { grid-template-columns: 1fr; }
}
/* ============ 核心优势（养殖特色） ============ */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.advantage-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 40px 30px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.35s;
  border: 1px solid var(--line);
}
.advantage-card:hover { transform: translateY(-8px); box-shadow: 0 16px 40px rgba(27,67,50,0.14); }
.advantage-card .icon {
  width: 76px; height: 76px;
  margin: 0 auto 22px;
  background: linear-gradient(135deg, var(--green), var(--green-light));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 36px;
}
.advantage-card h4 { font-size: 20px; color: var(--green-dark); margin-bottom: 12px; }
.advantage-card p { color: var(--gray); font-size: 14px; }

/* ============ 养殖模式 ============ */
.breeding-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.breeding-item {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 36px;
  transition: all 0.35s;
}
.breeding-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(27,67,50,0.12);
}
.breeding-index {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  border-radius: 14px;
}
.breeding-body h4 {
  font-size: 20px;
  color: var(--green-dark);
  margin-bottom: 12px;
  font-weight: 700;
}
.breeding-body p {
  color: var(--gray);
  font-size: 15px;
  line-height: 1.9;
}
@media (max-width: 640px) {
  .breeding-item { padding: 24px 20px; gap: 18px; }
  .breeding-index { width: 44px; height: 44px; font-size: 18px; border-radius: 10px; }
  .breeding-body h4 { font-size: 17px; }
  .breeding-body p { font-size: 14px; }
}

/* ============ 产品介绍 ============ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  transition: all 0.35s;
}
.product-card:hover { transform: translateY(-8px); box-shadow: 0 16px 40px rgba(27,67,50,0.14); }
.product-img {
  position: relative;
  height: 220px;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #f0f7f2, #e6efe9);
}
.product-img .emoji { font-size: 100px; }
.product-img .badge {
  position: absolute;
  top: 16px; left: 16px;
  background: var(--gold);
  color: #fff;
  padding: 4px 14px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
}
.product-body { padding: 24px; }
.product-body .cat { color: var(--gold-dark); font-size: 13px; margin-bottom: 6px; }
.product-body h4 { font-size: 19px; color: var(--green-dark); margin-bottom: 10px; }
.product-body .desc { color: var(--gray); font-size: 14px; margin-bottom: 16px; min-height: 44px; }
.product-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.product-tags span {
  background: rgba(45, 106, 79, 0.08);
  color: var(--green);
  padding: 4px 12px;
  border-radius: 14px;
  font-size: 12px;
}
.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.product-price { color: var(--gold-dark); font-size: 22px; font-weight: 800; }
.product-price small { font-size: 13px; font-weight: 400; color: var(--gray); }
.buy-btn {
  background: var(--green);
  color: #fff;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
}
.buy-btn:hover { background: var(--green-dark); }

/* ============ 产品详情（图片 + 介绍） ============ */
.product-detail-list { display: flex; flex-direction: column; gap: 48px; }
.product-cat-section { display: flex; flex-direction: column; gap: 40px; }
.product-cat-head {
  display: flex; align-items: center; gap: 14px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--line);
}
.product-cat-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: rgba(45, 106, 79, 0.1);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; flex-shrink: 0;
}
.product-cat-head h2 {
  font-size: 26px; color: var(--green-dark); font-weight: 700; margin: 0;
}
.product-detail-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.product-detail-item.reverse { direction: rtl; }
.product-detail-item.reverse > * { direction: ltr; }

.product-detail-img {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 5 / 4;
  background: linear-gradient(135deg, #f0f7f2, #e6efe9);
}
.product-detail-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s;
}
.product-detail-item:hover .product-detail-img img { transform: scale(1.05); }
.product-detail-img .badge {
  position: absolute;
  top: 20px; left: 20px;
  background: var(--gold);
  color: #fff;
  padding: 6px 18px;
  border-radius: 18px;
  font-size: 13px;
  font-weight: 600;
  z-index: 2;
}

.product-detail-body .cat {
  color: var(--gold-dark);
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.product-detail-body h3 {
  font-size: 28px;
  color: var(--green-dark);
  font-weight: 700;
  margin-bottom: 14px;
}
.product-detail-body .brief {
  color: var(--green);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.product-detail-body .detail-text {
  color: var(--gray);
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 20px;
}
.product-detail-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.product-detail-tags span {
  background: rgba(45, 106, 79, 0.08);
  color: var(--green);
  padding: 6px 16px;
  border-radius: 18px;
  font-size: 13px;
  font-weight: 500;
}
.product-detail-footer {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.product-detail-footer .price { color: var(--gold-dark); font-size: 28px; font-weight: 800; }
.product-detail-footer .price small { font-size: 14px; font-weight: 400; color: var(--gray); }
.product-detail-footer .buy-btn { padding: 12px 28px; font-size: 15px; border-radius: 24px; }

@media (max-width: 900px) {
  .product-detail-item { grid-template-columns: 1fr; gap: 28px; }
  .product-detail-item.reverse { direction: ltr; }
  .product-detail-body h3 { font-size: 24px; }
}

/* ============ 地理优势 ============ */
.geo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.geo-map {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: linear-gradient(135deg, #e8f0ea, #dce8e0);
  padding: 40px;
  text-align: center;
  min-height: 360px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.geo-map .map-emoji { font-size: 90px; margin-bottom: 16px; }
.geo-map .map-title { font-size: 20px; color: var(--green-dark); font-weight: 700; }
.geo-map .map-sub { color: var(--gray); font-size: 14px; margin-top: 6px; }
.geo-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.geo-stat {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  border: 1px solid var(--line);
}
.geo-stat b { font-size: 26px; color: var(--green); display: block; }
.geo-stat span { font-size: 13px; color: var(--gray); }

.geo-text h3 { font-size: 24px; color: var(--green-dark); margin-bottom: 18px; }
.geo-text p { color: var(--gray); margin-bottom: 16px; }
.geo-points { display: grid; gap: 14px; margin-top: 20px; }
.geo-points li { display: flex; gap: 14px; align-items: flex-start; }
.geo-points .icon {
  width: 40px; height: 40px;
  background: rgba(45, 106, 79, 0.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.geo-points b { display: block; color: var(--ink); }
.geo-points span { color: var(--gray); font-size: 14px; }

/* ============ 新闻中心 ============ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.news-card {
  display: block;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  transition: all 0.35s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.news-card:hover { transform: translateY(-8px); box-shadow: 0 16px 40px rgba(27,67,50,0.14); }
.news-card .news-cover {
  height: 180px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #eaf3ed, #dfece4);
  font-size: 64px;
  position: relative;
}
.news-card .news-cover .cat {
  position: absolute;
  top: 14px; left: 14px;
  background: var(--green);
  color: #fff;
  padding: 4px 14px;
  border-radius: 14px;
  font-size: 12px;
}
.news-body { padding: 22px; }
.news-body h4 { font-size: 17px; color: var(--green-dark); margin-bottom: 10px; line-height: 1.5; }
.news-body p { color: var(--gray); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; }
.news-meta { display: flex; justify-content: space-between; color: #999; font-size: 13px; }

/* ============ 新闻详情 ============ */
.news-detail {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 48px 56px;
}
.news-detail .loading,
.news-detail-empty {
  text-align: center;
  color: #999;
  padding: 60px 0;
  font-size: 15px;
}
.news-detail-head {
  border-bottom: 1px solid var(--line);
  padding-bottom: 28px;
  margin-bottom: 32px;
}
.news-detail-cat {
  display: inline-block;
  background: rgba(45, 106, 79, 0.1);
  color: var(--green);
  padding: 5px 16px;
  border-radius: 16px;
  font-size: 13px;
  margin-bottom: 18px;
}
.news-detail-head h1 {
  font-size: 28px;
  color: var(--green-dark);
  line-height: 1.45;
  margin-bottom: 16px;
  font-weight: 700;
}
.news-detail-meta {
  display: flex;
  gap: 24px;
  color: #999;
  font-size: 14px;
  flex-wrap: wrap;
}
.news-detail-cover {
  margin: -8px 0 28px;
  border-radius: var(--radius);
  overflow: hidden;
}
.news-detail-cover img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  display: block;
}
.news-detail-body {
  color: #444;
  font-size: 16px;
  line-height: 2;
}
.news-detail-body p {
  margin-bottom: 18px;
  text-indent: 2em;
}
.news-detail-back {
  margin-top: 32px;
  text-align: center;
}
.back-link {
  display: inline-block;
  color: var(--green);
  font-size: 15px;
  text-decoration: none;
  padding: 10px 28px;
  border: 1px solid var(--green);
  border-radius: 24px;
  transition: all 0.3s;
}
.back-link:hover {
  background: var(--green);
  color: #fff;
}
@media (max-width: 640px) {
  .news-detail { padding: 28px 20px; }
  .news-detail-head h1 { font-size: 22px; }
  .news-detail-body { font-size: 15px; }
}

/* ============ 联系我们 ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}
.contact-info .info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}
.contact-info .icon {
  width: 52px; height: 52px;
  background: rgba(45, 106, 79, 0.1);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.contact-info b { display: block; color: var(--green-dark); font-size: 16px; }
.contact-info span { color: var(--gray); font-size: 14px; }

.qrcode-box {
  margin-top: 8px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  gap: 16px;
  align-items: center;
  box-shadow: var(--shadow);
}
.qrcode-box img {
  width: 120px; height: 120px;
  object-fit: contain;
  border-radius: 8px;
  flex-shrink: 0;
}
.qrcode-text b { display: block; color: var(--green-dark); font-size: 17px; margin-bottom: 8px; }
.qrcode-text span { color: var(--gray); font-size: 13px; line-height: 1.6; }

.contact-form {
  background: #fff;
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; color: var(--ink); font-weight: 600; font-size: 14px; }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  transition: border 0.3s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(45,106,79,0.08); }
.form-group textarea { resize: vertical; min-height: 120px; }
.submit-btn {
  width: 100%;
  background: var(--green);
  color: #fff;
  border: none;
  padding: 14px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}
.submit-btn:hover { background: var(--green-dark); }

/* ============ 留言板 ============ */
.message-list { display: grid; gap: 20px; margin-bottom: 40px; }
.message-item {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--line);
  box-shadow: 0 2px 10px rgba(0,0,0,0.03);
}
.message-item .msg-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.message-item .avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--green-light));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 18px;
  margin-right: 12px;
}
.message-item .user { display: flex; align-items: center; }
.message-item .user b { color: var(--green-dark); }
.message-item .time { color: #999; font-size: 13px; }
.message-item .msg-content { color: var(--ink); line-height: 1.8; }
.message-item .reply {
  margin-top: 14px;
  background: var(--cream);
  padding: 14px 18px;
  border-radius: 10px;
  border-left: 3px solid var(--gold);
  font-size: 14px;
  color: var(--gray);
}
.message-item .reply b { color: var(--gold-dark); }

/* ============ 页脚 ============ */
.footer {
  background: var(--green-dark);
  color: #bcd6c8;
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer p { font-size: 14px; margin-bottom: 12px; }
.footer a { color: #bcd6c8; font-size: 14px; display: block; margin-bottom: 10px; }
.footer a:hover { color: #fff; }
.footer .footer-brand { font-size: 22px; color: #fff; font-weight: 700; margin-bottom: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: #8fae9c;
}

/* ============ 返回顶部 ============ */
.back-top {
  position: fixed;
  right: 30px; bottom: 30px;
  width: 48px; height: 48px;
  background: var(--green);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 99;
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--green-dark); }

/* ============ 页面标题 banner ============ */
.page-hero {
  background: linear-gradient(135deg, var(--green-dark), var(--green));
  color: #fff;
  padding: 70px 0;
  text-align: center;
}
.page-hero h1 { font-size: 40px; font-weight: 800; letter-spacing: 2px; margin-bottom: 12px; }
.page-hero p { font-size: 16px; opacity: 0.9; }

/* ============ 提示 ============ */
.toast {
  position: fixed;
  top: 90px;
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: #fff;
  padding: 12px 28px;
  border-radius: 24px;
  font-size: 14px;
  z-index: 999;
  opacity: 0;
  transition: all 0.4s;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-8px); }

/* ============ 基地展示 ============ */
.base-category {
  margin-bottom: 80px;
}
.base-category:last-of-type {
  margin-bottom: 0;
}
.base-category-head {
  margin-bottom: 28px;
}
.base-category-title {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 14px;
}
.base-block-num {
  display: inline-block;
  font-size: 46px;
  font-weight: 800;
  line-height: 1;
  color: rgba(45, 106, 79, 0.18);
  letter-spacing: 1px;
  flex-shrink: 0;
}
.base-category-title h3 {
  font-size: 26px;
  color: var(--green-dark);
  font-weight: 700;
}
.base-category-head > p {
  color: var(--gray);
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 14px;
  max-width: 860px;
}
.base-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.base-tags span {
  background: rgba(45, 106, 79, 0.1);
  color: var(--green);
  padding: 6px 16px;
  border-radius: 18px;
  font-size: 13px;
}
.base-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.base-photo {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.35s;
}
.base-photo:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(27,67,50,0.15);
}
.base-photo img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}
.photo-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  background: linear-gradient(to top, rgba(0,0,0,0.55), transparent);
  color: #fff;
  font-size: 13px;
  text-align: center;
}
.base-visit {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  background: linear-gradient(135deg, var(--green-dark), var(--green));
  border-radius: var(--radius);
  padding: 48px 56px;
  color: #fff;
}
.base-visit-text h3 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 700;
}
.base-visit-text p {
  font-size: 15px;
  opacity: 0.92;
  line-height: 1.8;
}
.base-visit .banner-btn {
  flex-shrink: 0;
  background: #fff;
  color: var(--green-dark);
  padding: 14px 40px;
  border-radius: 28px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s;
}
.base-visit .banner-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
@media (max-width: 900px) {
  .base-gallery { grid-template-columns: repeat(2, 1fr); }
  .base-category { margin-bottom: 60px; }
  .base-visit { flex-direction: column; text-align: center; }
}
@media (max-width: 600px) {
  .base-gallery { grid-template-columns: 1fr; }
  .base-block-num { font-size: 36px; }
  .base-category-title h3 { font-size: 22px; }
  .base-photo img { height: 200px; }
  .base-visit { padding: 36px 24px; }
}

/* ============ 品牌特色 ============ */
.feature-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 36px;
}
.feature-pillar {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: all 0.35s;
  box-shadow: var(--shadow);
}
.feature-pillar:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(27,67,50,0.14);
}
.feature-pillar .icon { font-size: 44px; margin-bottom: 16px; }
.feature-pillar h4 {
  font-size: 20px;
  color: var(--green-dark);
  margin-bottom: 10px;
  font-weight: 700;
}
.feature-pillar p { color: var(--gray); font-size: 14px; line-height: 1.8; }

.feature-block { margin-top: 12px; }
.feature-text p {
  color: var(--gray);
  font-size: 15px;
  line-height: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto 32px;
}
.feature-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: var(--shadow);
  position: relative;
  transition: all 0.35s;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(27,67,50,0.14);
}
.feature-card-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: var(--green);
  color: #fff;
  border-radius: 50%;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 16px;
}
.feature-card h4 {
  font-size: 18px;
  color: var(--green-dark);
  margin-bottom: 12px;
  font-weight: 700;
}
.feature-card p { color: var(--gray); font-size: 14px; line-height: 1.8; }
.feature-card .icon { font-size: 36px; margin-bottom: 14px; }

.feature-trace {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 12px;
}
.feature-trace-text p {
  color: var(--gray);
  font-size: 15px;
  line-height: 2;
  margin-bottom: 18px;
}
.feature-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 20px 0;
}
.feature-list li {
  background: rgba(45, 106, 79, 0.08);
  color: var(--green);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  text-align: center;
}
.feature-trace-img img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: block;
}
.feature-benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 12px;
}

.feature-roadmap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 12px;
}
.feature-roadmap-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: var(--shadow);
  position: relative;
  transition: all 0.35s;
}
.feature-roadmap-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(27,67,50,0.14);
}
.roadmap-num {
  display: block;
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  color: rgba(45, 106, 79, 0.2);
  margin-bottom: 12px;
}
.feature-roadmap-item h4 {
  font-size: 18px;
  color: var(--green-dark);
  margin-bottom: 12px;
  font-weight: 700;
}
.feature-roadmap-item p { color: var(--gray); font-size: 14px; line-height: 1.8; }
.feature-cta {
  margin-top: 48px;
  text-align: center;
  background: linear-gradient(135deg, #1b4332, #2d6a4f);
  border-radius: var(--radius);
  padding: 48px 32px;
  color: #fff;
}
.feature-cta p {
  font-size: 20px;
  margin-bottom: 20px;
  font-weight: 700;
}
.feature-cta .banner-btn {
  display: inline-block;
  background: #fff;
  color: var(--green-dark);
  padding: 14px 40px;
  border-radius: 28px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s;
}
.feature-cta .banner-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}

@media (max-width: 900px) {
  .feature-pillars,
  .feature-cards,
  .feature-benefits,
  .feature-roadmap { grid-template-columns: repeat(2, 1fr); }
  .feature-trace { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .feature-pillars,
  .feature-cards,
  .feature-benefits,
  .feature-roadmap { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: repeat(2, 1fr); }
}

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .highlights .container { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid,
  .product-grid,
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid,
  .geo-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .banner-content h1 { font-size: 36px; line-height: 1.3; letter-spacing: 0.5px; }
  .banner-slides { height: 440px; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px 24px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  }
  .nav-links.open { display: flex; }
  .menu-btn { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .advantage-grid,
  .product-grid,
  .news-grid,
  .highlights .container { grid-template-columns: 1fr; }
  .banner-content h1 { font-size: 28px; line-height: 1.32; letter-spacing: 0.5px; }
  .banner-arrow { display: none; }
  .section { padding: 50px 0; }
  .section-head h2 { font-size: 28px; }
}