/* 启正官网 - 公共样式
   配色参照 logo：绿色为主，蓝/橙/红点缀（农业 + 科技）
   ----------------------------------------------------------- */

:root {
  --color-primary: #2e8b57;      /* 主绿（农业） */
  --color-primary-dark: #246b44;
  --color-accent-blue: #2196f3;
  --color-accent-orange: #ff9800;
  --color-accent-red: #e74c3c;
  --color-text: #2c3e50;
  --color-text-light: #6c757d;
  --color-bg: #ffffff;
  --color-bg-soft: #f6f8f6;
  --color-border: #e6ece6;
  --shadow-sm: 0 2px 8px rgba(46, 139, 87, 0.06);
  --shadow-md: 0 6px 24px rgba(46, 139, 87, 0.10);
  --radius: 8px;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }

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

/* 顶部导航 */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.site-header .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--color-text);
  font-size: 18px;
}
.brand img {
  width: 36px;
  height: 36px;
  border-radius: 6px;
}
.brand .brand-sub {
  font-size: 12px;
  color: var(--color-text-light);
  font-weight: 400;
  display: block;
  margin-top: 2px;
}

.nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.nav a {
  padding: 8px 14px;
  border-radius: 6px;
  color: var(--color-text);
  font-size: 15px;
  transition: background 0.15s, color 0.15s;
}
.nav a:hover {
  background: var(--color-bg-soft);
  color: var(--color-primary);
  text-decoration: none;
}
.nav a.active {
  background: var(--color-primary);
  color: #fff;
}

/* 内容容器 */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #e8f5ed 0%, #f6fbf8 60%, #fff7e6 100%);
  padding: 64px 0 56px;
}
.hero h1 {
  font-size: 36px;
  line-height: 1.3;
  margin: 0 0 16px;
  color: var(--color-text);
}
.hero h1 .accent { color: var(--color-primary); }
.hero p.lead {
  font-size: 17px;
  color: var(--color-text-light);
  margin: 0 0 28px;
  max-width: 640px;
}
.hero .cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff !important;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}
.btn-outline {
  background: #fff;
  color: var(--color-primary) !important;
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-bg-soft);
  text-decoration: none;
}

/* Section */
section { padding: 56px 0; }
section h2 {
  font-size: 26px;
  margin: 0 0 8px;
  color: var(--color-text);
}
section h2 .bar {
  display: inline-block;
  width: 4px;
  height: 22px;
  background: var(--color-primary);
  margin-right: 10px;
  vertical-align: middle;
  border-radius: 2px;
}
section .section-lead {
  color: var(--color-text-light);
  margin: 0 0 28px;
  max-width: 720px;
}

/* 卡片网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #cfe3d6;
}
.card .icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 14px;
  color: #fff;
}
.card .icon.green { background: var(--color-primary); }
.card .icon.blue  { background: var(--color-accent-blue); }
.card .icon.orange{ background: var(--color-accent-orange); }
.card .icon.red   { background: var(--color-accent-red); }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--color-text-light); font-size: 14.5px; }

/* 信息块（关于我们 / 联系我们） */
.info-block {
  background: var(--color-bg-soft);
  border-radius: var(--radius);
  padding: 28px;
  margin: 24px 0;
}
.info-block ul { margin: 8px 0 0; padding-left: 20px; }
.info-block li { margin-bottom: 6px; }

.kv {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 12px 20px;
  margin: 16px 0;
}
.kv .k { color: var(--color-text-light); }

/* 启农通产品页特有 */
.feature-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.feature {
  display: flex;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #fff;
}
.feature .num {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.feature h4 { margin: 0 0 6px; font-size: 16px; }
.feature p { margin: 0; color: var(--color-text-light); font-size: 14px; }

/* 法律条款页（用户协议 / 隐私政策） */
.legal {
  max-width: 820px;
  margin: 0 auto;
}
.legal h1 { font-size: 28px; margin: 0 0 6px; }
.legal .updated { color: var(--color-text-light); font-size: 13px; margin-bottom: 24px; }
.legal h2 {
  font-size: 18px;
  margin: 28px 0 10px;
  color: var(--color-primary-dark);
}
.legal p { margin: 0 0 12px; }
.legal ul { margin: 0 0 14px; padding-left: 22px; }
.legal li { margin-bottom: 4px; }

/* 页脚 */
.site-footer {
  background: #1f2a24;
  color: #cdd6d0;
  padding: 28px 0;
  margin-top: 60px;
  font-size: 14px;
}
.site-footer .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  align-items: center;
}
.site-footer a { color: #cdd6d0; }
.site-footer .icp { color: #a8b3ad; }

/* 响应式 */
@media (max-width: 720px) {
  .site-header .inner { flex-direction: column; align-items: flex-start; padding: 12px 18px; }
  .nav { width: 100%; }
  .hero { padding: 40px 0; }
  .hero h1 { font-size: 28px; }
  section { padding: 36px 0; }
  .container { padding: 0 18px; }
  .kv { grid-template-columns: 1fr; gap: 4px 0; }
  .kv .k { font-size: 13px; }
}