:root {
  --primary-color: #409eff;
  --primary-light: #66b1ff;
  --primary-dark: #337ecc;
  --bg-color: #f5f7fa;
  --card-bg: #ffffff;
  --text-main: #303133;
  --text-secondary: #606266;
  --text-light: #909399;
  --border-color: #e4e7ed;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --radius: 10px;
  --transition: all 0.25s ease;
}

* {
  box-sizing: border-box;
  font-family: "Inter", "Microsoft YaHei", sans-serif;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page {
  padding: 34px 0 70px;
}

.page-hero {
  padding: 26px 0 10px;
}

.page-hero h1 {
  font-size: 34px;
  margin: 0 0 10px;
}

.page-hero p {
  margin: 0;
  color: var(--text-secondary);
  max-width: 880px;
}

.breadcrumb {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 14px;
}

.breadcrumb a {
  color: var(--text-light);
}

.breadcrumb a:hover {
  color: var(--primary-color);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.section {
  margin-top: 22px;
}

.section-title {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin: 18px 0;
}

.section-title h2 {
  margin: 0;
  font-size: 22px;
}

.section-title p {
  margin: 0;
  color: var(--text-light);
  font-size: 14px;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (max-width: 980px) {
  .grid.cols-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .grid.cols-3,
  .grid.cols-2 {
    grid-template-columns: 1fr;
  }

  .page-hero h1 {
    font-size: 28px;
  }
}

.feature-card {
  padding: 18px 18px;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.10);
}

.feature-card .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  margin-bottom: 10px;
}

.feature-card h3 {
  margin: 6px 0 8px;
  font-size: 16px;
}

.feature-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.kv {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px 18px;
  padding: 18px;
}

.kv .k {
  color: var(--text-light);
  font-size: 14px;
}

.kv .v {
  color: var(--text-main);
  font-size: 14px;
}

.btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: white;
  color: var(--text-main);
  cursor: pointer;
}

.btn:hover {
  border-color: var(--primary-light);
  color: var(--primary-dark);
}

.btn.primary {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

.btn.primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: white;
}

.note {
  border-left: 4px solid var(--primary-light);
  padding: 12px 14px;
  background: rgba(64, 158, 255, 0.06);
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-mini {
  margin-top: 30px;
  padding: 18px 0 0;
  color: var(--text-light);
  font-size: 13px;
  border-top: 1px solid var(--border-color);
}