/* ============================================================
   中芳堂美业 V5.0 — 全局公共样式
   用途：所有顾客端页面统一引用
   兼容：电脑端 + 手机端 + 小程序 WebView
   ============================================================ */

/* ── CSS 变量体系（全局统一） ── */
:root {
  --bg: #050a1f;
  --bg-card: rgba(10,20,60,0.55);
  --cyan: #00e5ff;
  --cyan-dim: rgba(0,229,255,0.2);
  --purple: #7c3aed;
  --gold: #f59e0b;
  --green: #10b981;
  --pink: #ec4899;
  --red: #ef4444;
  --text: #e2e8f0;
  --dim: #94a3b8;
  --border: rgba(0,229,255,0.12);
  --radius: 16px;
  --glow-cyan: 0 0 20px rgba(0,229,255,0.3);
  --glow-purple: 0 0 20px rgba(124,58,237,0.3);
  --transition: all 0.3s ease;
}

/* ── 全局重置 ── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'PingFang SC','Microsoft YaHei',-apple-system,sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--cyan); text-decoration: none; transition: var(--transition); }
a:hover { opacity: 0.85; }

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

/* ── 统一导航栏 ── */
.nav {
  position: fixed; top:0; left:0; right:0; z-index:100;
  background: rgba(5,10,31,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px; height: 56px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 17px; font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  text-decoration: none; white-space: nowrap;
}
.nav-links {
  display: flex; list-style: none; gap: 4px;
}
.nav-links a {
  display: block; padding: 8px 14px; border-radius: 20px;
  color: var(--dim); font-size: 13px; font-weight: 500;
  text-decoration: none; transition: var(--transition);
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--cyan);
  background: rgba(0,229,255,0.08);
}

/* 汉堡菜单按钮（默认隐藏） */
.nav-toggle {
  display: none; flex-direction: column; gap: 4px;
  background: none; border: none; cursor: pointer;
  padding: 8px; z-index: 101;
  color: var(--cyan); font-size: 22px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--cyan); border-radius: 2px;
  transition: var(--transition);
}

/* 移动端侧滑菜单 */
.nav-mobile {
  display: none;
  position: fixed; top: 56px; left: 0; right: 0; bottom: 0;
  background: rgba(5,10,31,0.98);
  backdrop-filter: blur(20px);
  z-index: 99; flex-direction: column;
  padding: 12px 16px; gap: 4px;
  overflow-y: auto;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  display: block; padding: 14px 18px; border-radius: 14px;
  color: var(--text); font-size: 16px; font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.nav-mobile a:hover,
.nav-mobile a.active {
  background: rgba(0,229,255,0.08);
  border-color: var(--cyan-dim);
  color: var(--cyan);
}

/* ── 页面容器 ── */
.page-container {
  padding-top: 56px; /* 导航栏高度 */
  min-height: 100vh;
}

/* ── 通用区块 ── */
.section {
  max-width: 1100px; margin: 0 auto;
  padding: 64px 24px;
}
.section-title {
  text-align: center; margin-bottom: 40px;
}
.section-title h2 {
  font-size: 30px; font-weight: 700;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}
.section-title p {
  color: var(--dim); font-size: 15px;
}

/* ── 卡片 ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.card:hover {
  border-color: var(--cyan-dim);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

/* ── 按钮 ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 24px; border-radius: 24px;
  font-size: 14px; font-weight: 600;
  cursor: pointer; text-decoration: none;
  transition: var(--transition); border: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--cyan), #0891b2);
  color: #000; box-shadow: var(--glow-cyan);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 30px rgba(0,229,255,0.5); }
.btn-outline {
  border: 1px solid var(--cyan-dim); color: var(--cyan); background: transparent;
}
.btn-outline:hover { background: rgba(0,229,255,0.1); transform: translateY(-2px); }
.btn-gold {
  background: linear-gradient(135deg, var(--gold), #d97706);
  color: #000; box-shadow: 0 0 20px rgba(245,158,11,0.3);
}
.btn-sm {
  padding: 6px 16px; font-size: 12px; border-radius: 16px;
  background: rgba(0,229,255,0.12); color: var(--cyan);
  border: 1px solid rgba(0,229,255,0.25); cursor: pointer;
}

/* ── 标签 ── */
.tag {
  display: inline-block; padding: 3px 12px; border-radius: 12px;
  font-size: 11px; font-weight: 600;
}
.tag-cyan { background: rgba(0,229,255,0.12); color: var(--cyan); }
.tag-purple { background: rgba(124,58,237,0.12); color: var(--purple); }
.tag-gold { background: rgba(245,158,11,0.12); color: var(--gold); }
.tag-green { background: rgba(16,185,129,0.12); color: var(--green); }
.tag-pink { background: rgba(236,72,153,0.12); color: var(--pink); }

/* ── 备案号（统一注入） ── */
.icp-footer {
  text-align: center; padding: 20px 16px 60px;
  font-size: 11px; color: var(--dim);
  border-top: 1px solid var(--border);
  background: rgba(5,10,31,0.8);
}
.icp-footer a { color: var(--dim); text-decoration: none; }
.icp-footer a:hover { color: var(--cyan); }

/* ── 移动端适配 ── */
@media (max-width: 768px) {
  .nav { padding: 0 14px; height: 50px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .section { padding: 32px 16px; }
  .section-title h2 { font-size: 24px; }
  .section-title p { font-size: 13px; }
  .page-container { padding-top: 50px; }
  .btn { padding: 8px 18px; font-size: 13px; }
}

@media (max-width: 480px) {
  .nav { height: 46px; padding: 0 10px; }
  .nav-logo { font-size: 15px; }
  .page-container { padding-top: 46px; }
  .section { padding: 28px 14px; }
  .section-title h2 { font-size: 22px; }
}