/* ========== Theme (全新变量/命名) ========== */
:root{
  --bg:#02040a; --ink:#f4f7fb;
  --muted:#cdd6e3; --line:#273141;
  --card:#0e1420; --card2:#121a28;
  --accent:#ffd33d; --accent-2:#ff2d55;
  --good:#16a34a; --warn:#f59e0b; --err:#dc2626;
  --chip:#1e293b;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:
    radial-gradient(1200px 600px at 10% -20%, #930e16 0%, transparent 60%),
    radial-gradient(1200px 600px at 110% 120%, #ffd33d33 0%, transparent 60%),
    linear-gradient(#000c 0%, #0008 100%),
    #000;
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
}

.container{max-width:860px;margin:0 auto;padding:20px 16px 32px}
.hero{display:grid;gap:10px;padding:6px 0 16px}
.hero__plus{color:#ffe600;font-weight:900;font-size:28px;line-height:1}
.hero__title{margin:0;line-height:1.05;font-weight:900;letter-spacing:.3px;
  font-size:clamp(28px,6vw,52px); text-transform:uppercase}
.hero__title span{display:block}
.hero__sub{font-size:clamp(16px,3.6vw,22px);line-height:1.25;color:#fff;text-shadow:0 2px 12px #0008;font-weight:750}
.slots{display:inline-block;opacity:.96}

.card{background:linear-gradient(180deg,var(--card),var(--card2));border:1px solid #202838;border-radius:16px;padding:14px;box-shadow:0 10px 28px #0009}
.start__row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center}

.field{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:10px;background:#fff;color:#111;border-radius:12px;padding:12px 14px;border:2px solid transparent;box-shadow:inset 0 1px 0 #0002,0 12px 20px #0005}
.field:focus-within{border-color:#8cb7ff}
.field__icon{width:22px;height:22px;opacity:.6}
.field__input{border:none;outline:none;font-size:16px;background:transparent;width:100%}

.btn{border:none;outline:none;cursor:pointer;white-space:normal;line-height:1.1;text-align:center;word-break:break-word;font-weight:900;border-radius:12px}
.btn--primary{background:var(--accent);color:#111;padding:14px 18px;font-size:16px;box-shadow:0 10px 18px #0007,inset 0 -2px 0 #0002;animation:btn-shake 1.15s ease 700ms 1;transform:translateZ(0)}
.btn--primary:active{transform:scale(.98)}
@keyframes btn-shake{10%,90%{transform:translateX(-1px)}20%,80%{transform:translateX(2px)}30%,50%,70%{transform:translateX(-4px)}40%,60%{transform:translateX(4px)}}

.disclaimer{margin:10px 0 0;font-size:14px;color:#e5e7eb;opacity:.9}
.foot{margin-top:18px;font-size:12px;color:#b9c2cf;opacity:.9}

/* ===== 全新进度条实现（使用 CSS 自定义属性驱动） ===== */
.meter{margin-top:14px;padding:14px;border:1px solid var(--line);border-radius:14px;background:#0f1624}
.meter__head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.badge{background:#b91c1c;color:#fff;font-weight:800;padding:6px 10px;border-radius:10px;font-size:14px;box-shadow:0 8px 16px #0007}
.meter__bar{position:relative;height:16px;border-radius:10px;background:linear-gradient(90deg,#52525b 0 20%, #f59e0b 20% 40%, #f97316 40% 60%, #ef4444 60% 80%, #16a34a 80% 100%);overflow:hidden;outline:1px solid #0005}
.meter__fill{position:absolute;left:0;top:0;bottom:0;width:calc(var(--p,0) * 1%);background:linear-gradient(90deg,#0004,#0000);mix-blend-mode:multiply;transition:width .3s ease}
.meter__ticks{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:8px}
.meter__ticks span{width:20%;text-align:center;display:block}
.tcap{font-weight:700;color:#e2e8f0}

/* ===== 底部抽屉（Sheet）全新样式 ===== */
.sheet{position:fixed;inset:0;display:grid;place-items:end center;background:rgba(0,0,0,.65);z-index:50}
.sheet[hidden]{display:none}
.sheet__panel{width:100%;max-width:720px;background:linear-gradient(180deg,#151b27,#0f151f);border:1px solid #1f2a3b;border-radius:18px 18px 0 0;box-shadow:0 -8px 28px rgba(0,0,0,.45);padding:16px;color:var(--ink);transform:translateY(14px);animation:rise .26s ease-out forwards}
@keyframes rise{to{transform:translateY(0)}}
.sheet__head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.sheet__title{font-size:18px;margin:0}
.sheet__close{background:#0c1220;border:1px solid #253043;border-radius:10px;color:#cfe1ff;padding:6px 10px;cursor:pointer}

.result{margin-top:8px;padding:14px;border:1px solid var(--line);border-radius:14px;background:#0f1624}
.result__head{display:flex;justify-content:space-between;gap:10px;align-items:center}
.pill{background:#0f172a;border:1px solid #243044;color:#cfe1ff;padding:6px 10px;border-radius:999px;font-size:12px}
.kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}
.kpi__c{background:#0f172a;border:1px solid #243044;border-radius:12px;padding:10px;text-align:center}
.kpi__v{font-weight:800;font-size:18px}

.wa{margin-top:12px;display:grid;gap:10px;background:#0e1a12;border:1px solid #1f3d28;padding:12px;border-radius:14px}
.wa__preview{background:#0b2213;color:#d1fae5;padding:10px;border-radius:12px;font-size:14px;line-height:1.4;white-space:pre-wrap;min-height:40px}
.btn--wa{text-decoration:none;background:#25D366;color:#072b12;font-weight:900;padding:12px 16px;border-radius:12px;box-shadow:0 10px 18px #0007,inset 0 -2px 0 #0003;text-align:center}

/* ===== 响应式 ===== */
@media (min-width:720px){
  .sheet{place-items:center}
  .sheet__panel{border-radius:18px;max-height:88vh;overflow:auto}
  .card{padding:18px}
  .start__row{grid-template-columns:1fr auto}
}