/* ===== 埊先生官网 - 全局样式 ===== */
:root {
  --primary: #1a56db;
  --primary-dark: #1e40af;
  --accent: #f97316;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --border: #e5e7eb;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

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

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* ===== 导航栏 ===== */
.navbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
}
.logo span { color: var(--accent); }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }

/* ===== Hero 区域 ===== */
.hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #1a56db 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}
.hero h1 { font-size: 42px; margin-bottom: 16px; font-weight: 700; }
.hero p { font-size: 18px; opacity: 0.9; max-width: 640px; margin: 0 auto 32px; }
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #ea580c; text-decoration: none; }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
  margin-left: 12px;
}
.btn-outline:hover { background: rgba(255,255,255,0.1); text-decoration: none; }

/* ===== 通用区块 ===== */
.section { padding: 64px 0; }
.section.alt { background: var(--bg-soft); }
.section-title {
  font-size: 28px;
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
}

/* 卡片网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}
.card h3 { font-size: 18px; margin-bottom: 10px; color: var(--primary-dark); }
.card p { color: var(--text-light); font-size: 14px; }

/* ===== 下载列表 ===== */
.download-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 16px;
  background: #fff;
}
.download-item .info h4 { font-size: 16px; margin-bottom: 4px; }
.download-item .info span { font-size: 13px; color: var(--text-light); }
.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
  border-radius: 6px;
}

/* ===== 关于我们 ===== */
.about-content { max-width: 720px; margin: 0 auto; }
.about-content p { margin-bottom: 16px; color: var(--text); }

/* ===== 法律页面 ===== */
.legal-page { max-width: 800px; margin: 0 auto; padding: 48px 24px; }
.legal-page h1 { font-size: 26px; margin-bottom: 24px; }
.legal-page h2 { font-size: 18px; margin: 24px 0 12px; }
.legal-page p, .legal-page li { color: var(--text-light); margin-bottom: 10px; }
.legal-page ul { padding-left: 24px; }

/* ===== 页脚 ===== */
.footer {
  background: #1f2937;
  color: #9ca3af;
  padding: 32px 0;
  font-size: 13px;
  text-align: center;
}
.footer a { color: #d1d5db; }
.footer .beian { margin-top: 8px; }

/* ===== 移动端适配 ===== */
@media (max-width: 768px) {
  .hero h1 { font-size: 28px; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 14px; }
}