/* ============================================
   道地源 · 中药材贸易 官网样式表
   风格：自然健康（绿色系 · 留白 · 克制）
   ============================================ */

:root {
  --green-900: #1b3a2f;
  --green-700: #2d6a4f;
  --green-500: #40916c;
  --green-300: #74c69d;
  --green-100: #d8f3dc;
  --green-50:  #f1f8f4;
  --sand-50:   #faf8f3;
  --ink:       #23302b;
  --ink-soft:  #5c6b64;
  --line:      #e2e8e4;
  --gold:      #b98b3c;
  --radius:    14px;
  --shadow:    0 4px 24px rgba(27, 58, 47, .07);
  --shadow-lg: 0 12px 40px rgba(27, 58, 47, .12);
  --maxw:      1160px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC",
               "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px;
        color: var(--green-900); letter-spacing: .5px; }
.logo .mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  display: grid; place-items: center; color: #fff; font-size: 17px; font-weight: 900;
  box-shadow: 0 4px 12px rgba(64,145,108,.35);
}
.logo small { display: block; font-size: 10.5px; font-weight: 500; color: var(--ink-soft);
              letter-spacing: 2.5px; margin-top: -3px; }

.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-links a {
  padding: 8px 16px; border-radius: 8px; font-size: 15px; color: var(--ink-soft);
  transition: .22s; font-weight: 500;
}
.nav-links a:hover { color: var(--green-700); background: var(--green-50); }
.nav-links a.active { color: var(--green-700); background: var(--green-100); font-weight: 700; }

.nav-cta {
  background: var(--green-700); color: #fff !important;
  padding: 10px 20px !important; border-radius: 9px; font-weight: 600;
  box-shadow: 0 4px 14px rgba(45,106,79,.28);
}
.nav-cta:hover { background: var(--green-900) !important; }
.nav-cta.active { background: var(--green-900) !important; color: #fff !important; }

.menu-toggle { display: none; background: none; border: 0; font-size: 24px;
               color: var(--green-900); cursor: pointer; }

/* ---------- 通用区块 ---------- */
section { padding: 76px 0; }
.section-alt { background: var(--green-50); }

.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2.5px;
  color: var(--green-500); text-transform: uppercase; margin-bottom: 12px;
}
.h2 { font-size: 32px; font-weight: 800; color: var(--green-900);
      letter-spacing: -.5px; line-height: 1.35; }
.h2 + .sub { margin-top: 14px; font-size: 16px; color: var(--ink-soft); max-width: 660px; }
.center { text-align: center; }
.center .sub { margin-left: auto; margin-right: auto; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1000px 500px at 82% 12%, rgba(116,198,157,.28), transparent 62%),
    radial-gradient(720px 420px at 8% 88%, rgba(185,139,60,.13), transparent 60%),
    linear-gradient(165deg, #f4faf6 0%, #ffffff 58%, #f8fbf9 100%);
  padding: 96px 0 88px;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(45,106,79,.055) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 72%);
}
.hero-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.12fr .88fr; gap: 56px; align-items: center;
}
.hero h1 {
  font-size: 46px; font-weight: 900; line-height: 1.24; letter-spacing: -1px;
  color: var(--green-900);
}
.hero h1 em { font-style: normal; color: var(--green-500); }
.hero p.lead {
  margin-top: 22px; font-size: 17px; color: var(--ink-soft); max-width: 540px;
}
.hero-btns { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 11px; font-weight: 700; font-size: 15.5px;
  transition: .24s; cursor: pointer; border: 0;
}
.btn-primary { background: var(--green-700); color: #fff;
               box-shadow: 0 8px 24px rgba(45,106,79,.28); }
.btn-primary:hover { background: var(--green-900); transform: translateY(-2px);
                     box-shadow: 0 12px 30px rgba(45,106,79,.34); }
.btn-ghost { background: #fff; color: var(--green-700); border: 1.5px solid var(--green-300); }
.btn-ghost:hover { background: var(--green-50); border-color: var(--green-500); }

.hero-stats {
  margin-top: 44px; display: flex; gap: 40px; flex-wrap: wrap;
  padding-top: 28px; border-top: 1px solid var(--line);
}
.hero-stats .num { font-size: 30px; font-weight: 900; color: var(--green-700);
                   letter-spacing: -.5px; }
.hero-stats .num span { font-size: 16px; font-weight: 700; }
.hero-stats .cap { font-size: 13.5px; color: var(--ink-soft); margin-top: 2px; }

/* Hero 右侧视觉卡 */
.hero-visual { position: relative; }
.hero-card {
  background: #fff; border-radius: 22px; padding: 30px 28px;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  position: relative;
}
.hero-card h3 { font-size: 17px; color: var(--green-900); margin-bottom: 18px;
                display: flex; align-items: center; gap: 9px; }
.hero-card h3::before {
  content: ""; width: 4px; height: 18px; border-radius: 2px; background: var(--green-500);
}
.chip-list { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
  padding: 9px 15px; background: var(--green-50); border: 1px solid var(--green-100);
  border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--green-700);
  transition: .2s;
}
.chip:hover { background: var(--green-100); transform: translateY(-1px); }
.hero-badge {
  position: absolute; right: -14px; top: -14px;
  background: var(--gold); color: #fff; font-size: 12.5px; font-weight: 700;
  padding: 9px 16px; border-radius: 999px; letter-spacing: .5px;
  box-shadow: 0 8px 20px rgba(185,139,60,.35);
}
.hero-mini {
  margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--line);
  display: flex; justify-content: space-between; font-size: 13.5px; color: var(--ink-soft);
}
.hero-mini b { color: var(--green-700); }

/* ---------- 品类卡片 ---------- */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: .28s; position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--green-500), var(--green-300));
  transition: .34s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg);
              border-color: var(--green-100); }
.card:hover::before { width: 100%; }
.card .ico {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--green-50); font-size: 22px; margin-bottom: 16px;
}
.card h3 { font-size: 17.5px; color: var(--green-900); margin-bottom: 9px; }
.card p { font-size: 14.5px; color: var(--ink-soft); }
.card .tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 7px; }
.card .tags span {
  font-size: 12.5px; padding: 4px 11px; border-radius: 6px;
  background: var(--green-50); color: var(--green-700); font-weight: 600;
}

/* ---------- 优势区块 ---------- */
.adv { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.adv-item { padding: 30px 26px; background: #fff; border-radius: var(--radius);
            border: 1px solid var(--line); }
.adv-item .n {
  font-size: 13px; font-weight: 800; color: var(--green-300); letter-spacing: 2px;
}
.adv-item h3 { font-size: 18px; margin: 10px 0 10px; color: var(--green-900); }
.adv-item p { font-size: 14.5px; color: var(--ink-soft); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius);
              border: 1px solid var(--line); background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
thead th {
  background: var(--green-900); color: #fff; text-align: left;
  padding: 14px 18px; font-weight: 600; font-size: 14px; white-space: nowrap;
}
tbody td { padding: 13px 18px; border-bottom: 1px solid var(--line); color: var(--ink-soft); }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: var(--green-50); }
tbody td:first-child { font-weight: 700; color: var(--green-900); }
.badge-ok { display: inline-block; padding: 3px 10px; border-radius: 6px;
            background: var(--green-100); color: var(--green-700);
            font-size: 12.5px; font-weight: 700; }

/* ---------- CTA 条 ---------- */
.cta-bar {
  background: linear-gradient(135deg, var(--green-900), var(--green-700));
  border-radius: 20px; padding: 52px 48px; color: #fff;
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px; flex-wrap: wrap; position: relative; overflow: hidden;
}
.cta-bar::after {
  content: ""; position: absolute; right: -60px; top: -60px;
  width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.14), transparent 68%);
}
.cta-bar h2 { font-size: 27px; font-weight: 800; line-height: 1.35; }
.cta-bar p { margin-top: 8px; color: rgba(255,255,255,.82); font-size: 15px; }
.btn-light { background: #fff; color: var(--green-900); }
.btn-light:hover { background: var(--green-100); transform: translateY(-2px); }

/* ---------- 页头（内页） ---------- */
.page-head {
  background: linear-gradient(165deg, var(--green-50), #fff);
  padding: 68px 0 56px; border-bottom: 1px solid var(--line);
  position: relative; overflow: hidden;
}
.page-head::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(45,106,79,.05) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.5), transparent 80%);
}
.page-head .wrap { position: relative; z-index: 2; }
.crumb { font-size: 13.5px; color: var(--ink-soft); margin-bottom: 14px; }
.crumb a:hover { color: var(--green-700); }
.page-head h1 { font-size: 38px; font-weight: 900; color: var(--green-900);
                letter-spacing: -.8px; }
.page-head p { margin-top: 14px; color: var(--ink-soft); font-size: 16px; max-width: 680px; }

/* ---------- 资讯列表 ---------- */
.news-item {
  display: grid; grid-template-columns: 128px 1fr; gap: 24px;
  padding: 26px 0; border-bottom: 1px solid var(--line); transition: .24s;
}
.news-item:hover { padding-left: 8px; }
.news-date {
  font-size: 13.5px; color: var(--ink-soft); font-weight: 600;
  padding-top: 3px;
}
.news-item h3 { font-size: 17.5px; color: var(--green-900); margin-bottom: 8px; }
.news-item p { font-size: 14.5px; color: var(--ink-soft); }
.news-tag {
  display: inline-block; font-size: 12px; font-weight: 700; padding: 3px 10px;
  border-radius: 6px; background: var(--green-50); color: var(--green-500);
  margin-bottom: 9px;
}

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px;
}
.contact-card h3 { font-size: 18px; color: var(--green-900); margin-bottom: 18px; }
.info-row { display: flex; gap: 14px; padding: 11px 0;
            border-bottom: 1px dashed var(--line); font-size: 14.7px; }
.info-row:last-child { border-bottom: 0; }
.info-row .k { color: var(--ink-soft); min-width: 76px; }
.info-row .v { color: var(--ink); font-weight: 600; }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600;
               color: var(--ink-soft); margin-bottom: 7px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--line);
  border-radius: 9px; font-size: 14.5px; font-family: inherit;
  color: var(--ink); background: #fff; transition: .2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 0; border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(64,145,108,.12);
}
.field textarea { min-height: 110px; resize: vertical; }

/* ---------- 页脚 ---------- */
footer {
  background: var(--green-900); color: rgba(255,255,255,.72);
  padding: 56px 0 28px; font-size: 14px;
}
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
             gap: 40px; padding-bottom: 34px;
             border-bottom: 1px solid rgba(255,255,255,.13); }
.foot-brand .logo { color: #fff; margin-bottom: 14px; }
.foot-brand p { font-size: 13.8px; line-height: 1.85; max-width: 320px; }
footer h4 { color: #fff; font-size: 14.5px; margin-bottom: 15px; font-weight: 700; }
footer li { margin-bottom: 9px; font-size: 13.8px; }
footer a:hover { color: var(--green-300); }
.foot-bottom {
  padding-top: 22px; display: flex; justify-content: space-between;
  gap: 18px; flex-wrap: wrap; font-size: 13px; color: rgba(255,255,255,.5);
}

/* ---------- 基地实拍图库 ---------- */
.photo-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 18px; max-width: 1080px; margin: 0 auto;
}
.photo-card {
  margin: 0; background: #fff; border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--line);
  transition: transform .25s, box-shadow .25s;
}
.photo-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.photo-card img { width: 100%; height: 240px; object-fit: cover; display: block; }
.photo-card figcaption {
  padding: 12px 16px; font-size: 13.8px; color: var(--ink-soft);
  border-top: 1px solid var(--line);
}
.photo-more a {
  display: flex; align-items: center; justify-content: center;
  height: 100%; min-height: 240px; text-align: center;
  color: var(--green-700); font-size: 17px; font-weight: 700;
  line-height: 1.9; background: linear-gradient(135deg,#EAF4EE,#DDEBDD);
}
.photo-more small { font-size: 13px; font-weight: 400; color: var(--ink-soft); }

/* ---------- 常见问题 FAQ ---------- */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 24px 28px; margin-bottom: 16px; box-shadow: var(--shadow);
  border-left: 4px solid var(--green-500);
}
.faq-item h3 {
  font-size: 17px; color: var(--ink); margin-bottom: 10px;
  font-weight: 700; line-height: 1.5;
}
.faq-item h3::before { content: "Q "; color: var(--green-500); font-weight: 800; }
.faq-item p { font-size: 14.8px; line-height: 1.9; color: var(--ink-soft); }
.faq-item b { color: var(--green-700); }

/* ---------- 文章正文排版 ---------- */
.article-body {
  max-width: 820px; margin: 0 auto; padding: 48px 0 20px;
  font-size: 16px; line-height: 2; color: var(--ink);
}
.article-body .lead {
  font-size: 16.5px; line-height: 1.95; color: var(--ink-soft);
  padding: 20px 24px; background: #F6FAF7; border-left: 4px solid var(--green-500);
  border-radius: 0 10px 10px 0; margin-bottom: 34px;
}
.article-body h2 {
  font-size: 23px; margin: 44px 0 18px; padding-bottom: 12px;
  border-bottom: 2px solid var(--line); color: var(--green-900);
  font-weight: 800; letter-spacing: .3px;
}
.article-body h3 {
  font-size: 18px; margin: 30px 0 12px; color: var(--green-700); font-weight: 700;
}
.article-body p { margin-bottom: 18px; }
.article-body b { color: var(--green-700); font-weight: 700; }
.article-body ul, .article-body ol { margin: 0 0 20px 4px; padding-left: 22px; }
.article-body li { margin-bottom: 11px; line-height: 1.9; }
.article-body table {
  width: 100%; border-collapse: collapse; margin: 22px 0 26px;
  font-size: 14.8px; background: #fff; box-shadow: var(--shadow); border-radius: 10px;
}
.article-body th {
  background: var(--green-900); color: #fff; padding: 13px 14px;
  text-align: left; font-weight: 700; font-size: 14.5px;
}
.article-body td { padding: 13px 14px; border-bottom: 1px solid var(--line); line-height: 1.8; }
.article-body tbody tr:nth-child(even) { background: #FAFCFB; }
.article-body tbody tr:last-child td { border-bottom: 0; }

/* 文章列表卡片 */
.article-list { max-width: 880px; margin: 0 auto; }
.article-list a {
  display: block; background: #fff; border: 1px solid var(--line);
  border-radius: 14px; padding: 26px 30px; margin-bottom: 16px;
  box-shadow: var(--shadow); transition: .25s;
}
.article-list a:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--green-300); }
.article-list h3 { font-size: 18.5px; color: var(--green-900); margin-bottom: 10px; font-weight: 700; }
.article-list p { font-size: 14.5px; color: var(--ink-soft); line-height: 1.85; margin-bottom: 10px; }
.article-list .meta { font-size: 13px; color: var(--green-500); font-weight: 600; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .adv { grid-template-columns: repeat(2, 1fr); }
  .contact-grid, .grid-2 { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .h2 { font-size: 27px; }
  .hero h1 { font-size: 36px; }
  .page-head h1 { font-size: 30px; }
}
@media (max-width: 680px) {
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 14px 20px 20px;
    border-bottom: 1px solid var(--line); gap: 4px; align-items: stretch;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
  .menu-toggle { display: block; }
  .grid-4, .grid-3, .adv, .photo-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
  .hero { padding: 64px 0 60px; }
  .hero h1 { font-size: 30px; }
  .hero-stats { gap: 26px; }
  .cta-bar { padding: 36px 26px; }
  .news-item { grid-template-columns: 1fr; gap: 8px; }
}