*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --p:#2B6ED9;--p2:#1A5A9E;--p3:#E6F0FF;--p4:#C2D9FF;
  --g:#27C93F;--g2:#E8F7EB;--r:#FF6B6B;--r2:#FFEEEE;
  --o:#F5A623;--o2:#FFF5E0;
  --bg:#F5F7FA;--card:#fff;--t1:#1A1A2E;--t2:#4A5568;--t3:#A8B4C4;--t4:#CBD5E0;
  --shadow:0 2px 8px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg:0 4px 16px rgba(43,110,217,0.12);
  --radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;
}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--t1);font-size:15px;line-height:1.5;
  max-width:768px;margin:0 auto;min-height:100vh;padding-bottom:80px;
  -webkit-font-smoothing:antialiased;
}

/* ===== 顶部Banner ===== */
.banner{
  background:linear-gradient(135deg,var(--p),var(--p2));
  color:#fff;padding:24px 20px 32px;border-radius:0 0 24px 24px;
  position:relative;overflow:hidden;
}
.banner::after{
  content:'';position:absolute;right:-40px;top:-40px;width:160px;height:160px;
  background:rgba(255,255,255,0.08);border-radius:50%;
}
.banner::before{
  content:'';position:absolute;right:60px;bottom:-30px;width:100px;height:100px;
  background:rgba(255,255,255,0.06);border-radius:50%;
}
.banner-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;position:relative;z-index:1}
.banner-title{font-size:20px;font-weight:700;letter-spacing:1px}
.banner-sub{font-size:13px;opacity:0.9;position:relative;z-index:1}
.banner-search{
  background:rgba(255,255,255,0.15);backdrop-filter:blur(10px);
  border-radius:24px;padding:10px 16px;display:flex;align-items:center;gap:8px;
  margin-top:16px;position:relative;z-index:1;
  border:1px solid rgba(255,255,255,0.2);
}
.banner-search input{
  background:transparent;border:none;outline:none;color:#fff;font-size:14px;width:100%;
  font-family:inherit;
}
.banner-search input::placeholder{color:rgba(255,255,255,0.6)}

/* ===== 卡片 ===== */
.card{
  background:var(--card);border-radius:var(--radius-lg);padding:20px;margin:12px 16px;
  box-shadow:var(--shadow);position:relative;
}
.card-title{
  font-size:16px;font-weight:700;color:var(--t1);margin-bottom:16px;display:flex;align-items:center;gap:8px;
}
.card-title .icon{
  width:32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:16px;
}

/* ===== 宫格 ===== */
.grid-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between}
.grid-item{
  flex:0 0 calc(33.333% - 6px);text-align:center;padding:14px 4px;
  border-radius:var(--radius-md);cursor:pointer;transition:all 0.2s;
}
.grid-item:active{background:var(--p3);transform:scale(0.95)}
.grid-item .icon-wrap{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  margin:0 auto 8px;font-size:24px;position:relative;
}
.grid-item .label{font-size:13px;color:var(--t2);font-weight:500}

/* 图标颜色 */
.ic-blue{background:var(--p3);color:var(--p)}
.ic-green{background:var(--g2);color:var(--g)}
.ic-red{background:var(--r2);color:var(--r)}
.ic-orange{background:var(--o2);color:var(--o)}
.ic-purple{background:#F3E5F5;color:#9C27B0}
.ic-teal{background:#E0F7FA;color:#00ACC1}

/* ===== 孩子切换标签 ===== */
.child-tabs{
  display:flex;gap:10px;padding:0 16px;margin-top:-16px;position:relative;z-index:2;
}
.child-tab{
  background:var(--card);border-radius:var(--radius-xl);padding:8px 20px;
  font-size:14px;font-weight:600;color:var(--t2);box-shadow:var(--shadow);
  cursor:pointer;transition:all 0.2s;border:2px solid transparent;
}
.child-tab.on{background:var(--p);color:#fff;border-color:var(--p2)}
.child-tab .avatar{
  width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--p),var(--p2));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-right:6px;
}

/* ===== 进度条 ===== */
.progress-track{height:8px;background:var(--t4);border-radius:4px;overflow:hidden;margin-top:8px}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--p),var(--p4));border-radius:4px;transition:width 0.4s ease}

/* ===== 统计 ===== */
.stat-grid{display:flex;gap:12px;margin-top:16px}
.stat-item{flex:1;text-align:center;padding:12px 8px;border-radius:var(--radius-md);background:var(--bg)}
.stat-num{font-size:22px;font-weight:700;color:var(--p);line-height:1}
.stat-label{font-size:12px;color:var(--t3);margin-top:4px}

/* ===== 列表项 ===== */
.list-item{
  display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid #F0F2F5;
}
.list-item:last-child{border-bottom:none;padding-bottom:0}
.list-icon{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.list-info{flex:1}
.list-title{font-size:14px;font-weight:600;color:var(--t1)}
.list-desc{font-size:12px;color:var(--t3);margin-top:2px}
.list-arrow{color:var(--t3);font-size:14px}

/* ===== 按钮 ===== */
.btn{
  width:100%;padding:14px;border-radius:var(--radius-xl);font-size:15px;font-weight:600;text-align:center;border:none;cursor:pointer;transition:all 0.2s;
}
.btn:active{transform:scale(0.98);opacity:0.9}
.btn-p{background:linear-gradient(135deg,var(--p),var(--p2));color:#fff;box-shadow:var(--shadow-lg)}
.btn-s{background:var(--p3);color:var(--p)}
.btn-g{background:var(--g);color:#fff}
.btn-r{background:var(--r);color:#fff}

/* ===== 表单 ===== */
.fld{margin-bottom:14px}
.fld label{display:block;font-size:13px;color:var(--t2);margin-bottom:6px;font-weight:500}
.fld input,.fld select,.fld textarea{
  width:100%;padding:12px 16px;border:1.5px solid var(--t4);border-radius:var(--radius-md);font-size:15px;font-family:inherit;outline:none;transition:border 0.2s;
  background:var(--card);
}
.fld input:focus,.fld select:focus,.fld textarea:focus{border-color:var(--p)}
.fld textarea{height:80px;resize:none}

/* ===== 错误/成功 ===== */
.err{background:var(--r2);color:var(--r);padding:12px 16px;border-radius:var(--radius-md);margin:10px 0;font-size:13px;font-weight:500}
.ok{background:var(--g2);color:var(--g);padding:12px 16px;border-radius:var(--radius-md);margin:10px 0;font-size:13px;font-weight:500}

/* ===== 底部导航 ===== */
.bottom-nav{
  position:fixed;bottom:0;left:50%;transform:translateX(-50%);
  width:100%;max-width:480px;background:#fff;border-top:1px solid #F0F2F5;
  display:flex;justify-content:space-around;padding:6px 0 12px;z-index:100;
  box-shadow:0 -2px 10px rgba(0,0,0,0.04);
}
.nav-item{text-align:center;cursor:pointer;padding:4px 16px;transition:all 0.2s;position:relative}
.nav-item.on .nav-icon{color:var(--p)}
.nav-item.on .nav-label{color:var(--p);font-weight:600}
.nav-icon{font-size:24px;color:var(--t3);transition:all 0.2s;display:block;margin-bottom:2px}
.nav-label{font-size:11px;color:var(--t3);transition:all 0.2s}
.nav-badge{
  position:absolute;top:0;right:10px;background:var(--r);color:#fff;font-size:10px;
  padding:1px 5px;border-radius:8px;font-weight:600;
}

/* ===== 订阅卡片 ===== */
.sub-card{
  background:linear-gradient(135deg,var(--p),var(--p2));color:#fff;border-radius:var(--radius-lg);padding:20px;margin:12px 16px;
  position:relative;overflow:hidden;box-shadow:var(--shadow-lg);
}
.sub-card::after{
  content:'';position:absolute;right:-30px;top:-30px;width:120px;height:120px;
  background:rgba(255,255,255,0.1);border-radius:50%;
}
.sub-card .tag{
  display:inline-block;background:rgba(255,255,255,0.2);padding:4px 12px;border-radius:12px;font-size:12px;margin-bottom:8px;
}
.sub-card .price{font-size:32px;font-weight:700;margin:4px 0}
.sub-card .price span{font-size:14px;font-weight:400;opacity:0.8}
.sub-card .btn-light{
  background:rgba(255,255,255,0.2);color:#fff;border:none;padding:10px 24px;
  border-radius:20px;font-size:14px;font-weight:600;cursor:pointer;margin-top:12px;backdrop-filter:blur(10px);
}
.sub-card .btn-light:active{background:rgba(255,255,255,0.3)}

/* ===== 空状态 ===== */
.empty-state{text-align:center;padding:40px 20px;color:var(--t3)}
.empty-state .icon{font-size:64px;margin-bottom:12px;opacity:0.5}
.empty-state .text{font-size:14px;margin-bottom:16px}

/* ===== 登录页 ===== */
.login-page{min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding:24px;background:var(--bg)}
.login-logo{
  text-align:center;margin-bottom:40px;
}
.login-logo .icon{
  width:80px;height:80px;border-radius:24px;
  background:linear-gradient(135deg,var(--p),var(--p2));margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;font-size:40px;color:#fff;
  box-shadow:var(--shadow-lg);
}
.login-logo h1{font-size:24px;font-weight:700;color:var(--t1);margin-bottom:4px}
.login-logo p{font-size:14px;color:var(--t3)}

/* ===== 二维码页 ===== */
.qr-display{
  text-align:center;padding:24px;background:var(--card);border-radius:var(--radius-lg);margin:16px;box-shadow:var(--shadow);
}
.qr-display .code-text{
  font-size:42px;font-weight:800;letter-spacing:12px;color:var(--p);font-family:monospace;margin:16px 0;
}
.qr-steps{margin:20px 16px;background:var(--p3);border-radius:var(--radius-md);padding:16px}
.qr-steps li{font-size:13px;color:var(--t2);margin:8px 0;padding-left:8px;list-style-position:inside}

/* ===== 套餐选择 ===== */
.plan-item{
  border:2px solid var(--t4);border-radius:var(--radius-md);padding:16px;margin-bottom:10px;cursor:pointer;transition:all 0.2s;
}
.plan-item.on{border-color:var(--p);background:var(--p3)}
.plan-item .plan-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.plan-item .plan-name{font-size:16px;font-weight:700}
.plan-item .plan-price{font-size:24px;font-weight:800;color:var(--p)}
.plan-item .plan-desc{font-size:13px;color:var(--t3)}
.plan-item .plan-tag{display:inline-block;background:var(--o2);color:var(--o);padding:2px 8px;border-radius:6px;font-size:12px;font-weight:600;margin-left:6px}

/* ===== 动画 ===== */
.fade-in{animation:fadeIn 0.3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ===== 加载 ===== */
.loading{text-align:center;padding:60px 20px;color:var(--t3)}
.loading .spinner{
  width:40px;height:40px;border:3px solid var(--p4);border-top-color:var(--p);border-radius:50%;
  animation:spin 0.8s linear infinite;margin:0 auto 16px;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== 隐藏滚动条 ===== */
::-webkit-scrollbar{display:none}