/* ================= 荔锦生物 官网样式 ================= */
:root {
  --green-900: #1d4a34;
  --green-700: #2e7d54;
  --green-500: #4caf82;
  --green-100: #e8f4ec;
  --gold: #c9a45c;
  --ink: #22302a;
  --ink-light: #5c6b63;
  --bg: #fbfdfb;
  --card: #ffffff;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(29, 74, 52, 0.08);
}

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

html { scroll-behavior: smooth; }

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

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

a { color: inherit; text-decoration: none; }

.container { width: min(1160px, 92%); margin: 0 auto; }

/* ---------- 顶部导航 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--green-100);
}

.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--green-700), var(--green-500));
  color: #fff; font-size: 20px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  letter-spacing: 1px;
}

.brand-name { font-size: 22px; font-weight: 700; color: var(--green-900); letter-spacing: 2px; }
.brand-name small { display: block; font-size: 11px; font-weight: 400; color: var(--ink-light); letter-spacing: 3px; }

.nav-links { display: flex; gap: 8px; list-style: none; }

.nav-links a {
  padding: 8px 18px; border-radius: 999px;
  font-size: 15px; color: var(--ink); transition: all 0.25s;
}
.nav-links a:hover { background: var(--green-100); color: var(--green-700); }
.nav-links a.active { background: var(--green-700); color: #fff; }

/* 导航下拉菜单 */
.nav-links li.has-drop { position: relative; }
.nav-links .drop {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%);
  background: #fff; border-radius: 12px; box-shadow: 0 12px 32px rgba(29, 74, 52, 0.16);
  border: 1px solid var(--green-100); list-style: none; padding: 8px; min-width: 150px;
  opacity: 0; visibility: hidden; transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
  transform: translateX(-50%) translateY(6px);
}
.nav-links li.has-drop:hover .drop {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.nav-links .drop a {
  display: block; padding: 9px 16px; border-radius: 8px;
  font-size: 14px; white-space: nowrap; text-align: center;
}
.nav-links .drop a:hover { background: var(--green-100); }
.drop-arrow { font-size: 10px; margin-left: 5px; }

/* ---------- 通用区块 ---------- */
.section { padding: 80px 0; }
.section.alt { background: var(--green-100) / 0.45; background: #f2f8f4; }

.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-head .eyebrow { color: var(--green-500); font-size: 13px; letter-spacing: 6px; text-transform: uppercase; }
.section-head h2 { font-size: 32px; color: var(--green-900); margin: 10px 0 14px; letter-spacing: 2px; }
.section-head p { color: var(--ink-light); font-size: 15px; }

.btn {
  display: inline-block; padding: 13px 34px; border-radius: 999px;
  background: var(--green-700); color: #fff; font-size: 15px;
  letter-spacing: 2px; transition: all 0.25s; border: 1px solid var(--green-700);
}
.btn:hover { background: var(--green-900); border-color: var(--green-900); }
.btn.ghost { background: transparent; color: var(--green-700); border-color: var(--green-500); }
.btn.ghost:hover { background: var(--green-100); color: var(--green-900); }

/* ---------- 首页 Hero ---------- */
.hero { position: relative; min-height: 620px; display: flex; align-items: center; color: #fff; overflow: hidden; }

.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(20, 48, 33, 0.78) 0%, rgba(20, 48, 33, 0.42) 55%, rgba(20, 48, 33, 0.15) 100%);
}

.hero-inner { position: relative; z-index: 2; padding: 110px 0 130px; }
.hero-inner .eyebrow { color: var(--gold); letter-spacing: 8px; font-size: 14px; }
.hero-inner h1 { font-size: 52px; letter-spacing: 6px; margin: 18px 0 20px; font-weight: 700; }
.hero-inner h1 span { color: var(--gold); }
.hero-inner p { max-width: 560px; font-size: 16px; opacity: 0.92; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero .btn.gold { background: var(--gold); border-color: var(--gold); color: #fff; }
.hero .btn.gold:hover { background: #b38d45; }

/* ---------- 数据带 ---------- */
.stats-band { background: var(--green-900); color: #fff; padding: 44px 0; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat .num { font-size: 36px; font-weight: 700; color: var(--gold); }
.stat .num small { font-size: 16px; }
.stat .label { font-size: 14px; opacity: 0.85; letter-spacing: 2px; margin-top: 4px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 28px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--card); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 14px 34px rgba(29, 74, 52, 0.14); }
.card img { width: 100%; height: 230px; object-fit: cover; }
.card-body { padding: 24px 22px 28px; }
.card-body h3 { font-size: 19px; color: var(--green-900); margin-bottom: 10px; letter-spacing: 1px; }
.card-body p { font-size: 14px; color: var(--ink-light); }

.value-card { text-align: center; padding: 36px 26px; }
.value-card .icon {
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 18px;
  background: var(--green-100); font-size: 30px;
  display: flex; align-items: center; justify-content: center;
}

/* ---------- 商品卡片 ---------- */
.product-card .tag {
  display: inline-block; margin-bottom: 10px; padding: 3px 12px;
  font-size: 12px; border-radius: 999px; letter-spacing: 1px;
  background: var(--green-100); color: var(--green-700);
}
.product-card .price-ask { color: var(--green-700); font-size: 14px; font-weight: 600; }
.product-card .spec { font-size: 13px; color: var(--ink-light); margin: 6px 0 14px; }

/* ---------- 篇幅图文 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; height: 420px; object-fit: cover; }
.split h3 { font-size: 26px; color: var(--green-900); margin-bottom: 16px; letter-spacing: 2px; }
.split p { color: var(--ink-light); margin-bottom: 12px; }
.check-list { list-style: none; margin-top: 18px; }
.check-list li { padding-left: 30px; position: relative; margin-bottom: 12px; color: var(--ink); }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 1px;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--green-500); color: #fff; font-size: 12px;
  display: flex; align-items: center; justify-content: center;
}

/* ---------- 基地时间线 ---------- */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 28px; border-left: 2px solid var(--green-100); }
.timeline .t-item { position: relative; padding: 0 0 34px 26px; }
.timeline .t-item::before {
  content: ""; position: absolute; left: -37px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--green-500); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--green-100);
}
.timeline .t-item h4 { color: var(--green-900); font-size: 17px; margin-bottom: 6px; }
.timeline .t-item p { color: var(--ink-light); font-size: 14px; }

/* ---------- 联系页 ---------- */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
.info-card { background: var(--green-900); color: #fff; border-radius: var(--radius); padding: 44px 40px; }
.info-card h3 { font-size: 22px; margin-bottom: 26px; letter-spacing: 2px; color: var(--gold); }
.info-item { display: flex; gap: 14px; margin-bottom: 22px; }
.info-item .ic { width: 40px; height: 40px; flex: none; border-radius: 10px; background: rgba(255,255,255,0.12); display: flex; align-items: center; justify-content: center; font-size: 18px; }
.info-item .t { font-size: 13px; opacity: 0.7; }
.info-item .v { font-size: 15px; }

.form-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 44px 40px; }
.form-card h3 { font-size: 22px; color: var(--green-900); margin-bottom: 26px; letter-spacing: 2px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; color: var(--ink-light); margin-bottom: 8px; letter-spacing: 1px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid #d9e6dd; border-radius: 10px;
  font-size: 14px; font-family: inherit; background: #fbfdfb; color: var(--ink);
  transition: border 0.2s, box-shadow 0.2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--green-500); box-shadow: 0 0 0 3px rgba(76, 175, 130, 0.15);
}
.field textarea { min-height: 130px; resize: vertical; }
.form-note { font-size: 12px; color: var(--ink-light); margin-top: 14px; }

/* ---------- 页面内hero ---------- */
.page-hero { position: relative; min-height: 340px; display: flex; align-items: center; color: #fff; overflow: hidden; }
.page-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: rgba(20, 48, 33, 0.62); }
.page-hero .inner { position: relative; z-index: 2; }
.page-hero h1 { font-size: 40px; letter-spacing: 6px; margin-bottom: 10px; }
.page-hero p { opacity: 0.88; letter-spacing: 2px; font-size: 15px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--green-900); color: rgba(255, 255, 255, 0.82); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; letter-spacing: 2px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer p, .footer li { font-size: 13px; line-height: 2; }
.footer ul { list-style: none; }
.footer a:hover { color: var(--gold); }
.copyright { border-top: 1px solid rgba(255, 255, 255, 0.12); padding: 20px 0; text-align: center; font-size: 12px; opacity: 0.6; }

/* ---------- 商品分类标题 ---------- */
.cat-title {
  scroll-margin-top: 96px;
  font-size: 24px; color: var(--green-900); letter-spacing: 2px;
  margin: 56px 0 24px; padding-left: 16px;
  border-left: 4px solid var(--green-500);
}
.cat-title:first-of-type { margin-top: 20px; }
.cat-title small { font-size: 13px; font-weight: 400; color: var(--ink-light); letter-spacing: 1px; margin-left: 12px; }

/* ---------- 移动端汉堡菜单 ---------- */
.nav-toggle {
  display: none; width: 42px; height: 42px; border: none; cursor: pointer;
  background: var(--green-100); color: var(--green-900);
  border-radius: 10px; font-size: 19px; line-height: 1;
  align-items: center; justify-content: center;
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-inner h1 { font-size: 36px; }

  /* 移动端：导航收进顶部右侧汉堡菜单 */
  .nav-toggle { display: flex; }
  .nav { position: relative; }
  .nav-links {
    display: none; position: absolute; top: calc(100% + 10px); right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: #fff; border: 1px solid var(--green-100); border-radius: 14px;
    box-shadow: 0 14px 34px rgba(29, 74, 52, 0.18);
    padding: 10px; min-width: 210px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { text-align: left; }
  /* 四大类下拉在移动端直接展开为子列表 */
  .nav-links li.has-drop .drop {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: none; min-width: 0; padding: 0 0 0 14px;
  }
  .nav-links .drop a { font-size: 13px; padding: 7px 14px; }
  .nav-links li.has-drop > a { pointer-events: none; }
}
@media (max-width: 560px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}