/* ===== PK10 白色主题设计系统 ===== */
:root{
  --bg:#F5F5F5;--card:#fff;--primary:#1E90FF;--primary-dark:#1873CC;
  --danger:#FF4444;--success:#4CAF50;--warn:#FF9800;
  --text:#333;--text2:#666;--text3:#999;--border:#E5E5E5;
  --shadow:0 2px 12px rgba(0,0,0,.08);--radius:16px;--radius-sm:12px;
  --c1:#e74c3c;--c2:#3498db;--c3:#2ecc71;--c4:#f39c12;--c5:#9b59b6;
  --c6:#1abc9c;--c7:#e67e22;--c8:#e91e63;--c9:#00bcd4;--c10:#8bc34a;
  --nav-h:60px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text);font-family:-apple-system,'PingFang SC','Helvetica Neue',sans-serif;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}

/* 卡片 */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:24px;font-weight:600;cursor:pointer;transition:all .2s;font-size:14px;padding:10px 24px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(30,144,255,.35)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-danger{background:linear-gradient(135deg,var(--danger),#CC3333);color:#fff}
.btn-sm{padding:6px 16px;font-size:12px;border-radius:20px}
.btn-block{width:100%;display:flex}

/* 输入框 */
.input{width:100%;padding:12px 16px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;color:var(--text);outline:none;transition:border .2s}
.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,144,255,.1)}
.input::placeholder{color:var(--text3)}

/* 赛车颜色球 */
.car{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;color:#fff;flex-shrink:0}
.c1{background:var(--c1)}.c2{background:var(--c2)}.c3{background:var(--c3)}.c4{background:var(--c4)}.c5{background:var(--c5)}
.c6{background:var(--c6)}.c7{background:var(--c7)}.c8{background:var(--c8)}.c9{background:var(--c9)}.c10{background:var(--c10)}

/* 底部导航 */
.nav-bottom{position:fixed;bottom:0;left:0;right:0;height:60px;background:#fff;border-top:1px solid #F0F0F0;z-index:1000;display:flex}
.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;color:#999;transition:color .3s;text-decoration:none}
.nav-item.active{color:#1E90FF}
.nav-item svg{width:24px;height:24px}
.nav-item span{font-size:12px}

/* 标签页 */
.tabs{display:flex;background:#fff;border-bottom:1px solid var(--border)}
.tab{flex:1;text-align:center;padding:10px 0;font-size:13px;color:var(--text3);cursor:pointer;border-bottom:2px solid transparent;transition:all .2s}
.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}

/* 投注按钮 */
.bet-btn{background:#fff;border:1px solid var(--border);border-radius:8px;padding:8px 4px;text-align:center;cursor:pointer;transition:all .15s;user-select:none}
.bet-btn:active{transform:scale(.97)}
.bet-btn.selected{border-color:var(--primary);background:rgba(30,144,255,.08);box-shadow:0 0 0 2px rgba(30,144,255,.2)}

/* 筹码 */
.chip{cursor:pointer;transition:all .15s;border-radius:50%;padding:8px 0;text-align:center;font-weight:700;font-size:12px;color:#fff}
.chip:active{transform:scale(.95)}
.chip.active{box-shadow:0 0 0 3px var(--primary),0 0 12px rgba(30,144,255,.3)}

/* Toast */
.toast{position:fixed;top:80px;left:50%;transform:translateX(-50%);padding:10px 24px;border-radius:24px;font-size:13px;z-index:999;color:#fff;box-shadow:0 4px 16px rgba(0,0,0,.15)}
.toast-ok{background:var(--success)}.toast-err{background:var(--danger)}

/* 工具类 */
.text-primary{color:var(--primary)}.text-danger{color:var(--danger)}.text-success{color:var(--success)}.text-muted{color:var(--text3)}
.text-center{text-align:center}.text-sm{font-size:12px}.text-xs{font-size:11px}.text-lg{font-size:18px}.text-xl{font-size:24px}
.font-bold{font-weight:700}.font-mono{font-family:'SF Mono',monospace}
.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}
.gap-1{gap:4px}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}
.p-3{padding:12px}.p-4{padding:16px}.px-4{padding-left:16px;padding-right:16px}.py-2{padding-top:8px;padding-bottom:8px}
.mt-2{margin-top:8px}.mt-3{margin-top:12px}.mt-4{margin-top:16px}.mb-2{margin-bottom:8px}.mb-3{margin-bottom:12px}
.w-full{width:100%}.max-w-md{max-width:448px}.mx-auto{margin-left:auto;margin-right:auto}
.hidden{display:none!important}.overflow-y-auto{overflow-y:auto}
.rounded-xl{border-radius:var(--radius)}.rounded-lg{border-radius:var(--radius-sm)}
.grid{display:grid}.grid-cols-2{grid-template-columns:repeat(2,1fr)}.grid-cols-5{grid-template-columns:repeat(5,1fr)}
.space-y-2>*+*{margin-top:8px}.space-y-3>*+*{margin-top:12px}.space-y-4>*+*{margin-top:16px}
.pb-nav{padding-bottom:calc(var(--nav-h) + 16px)}