:root{
  --bg:#0b0b10;
  --panel:rgba(255,255,255,.06);
  --panel2:rgba(255,255,255,.09);
  --text:#f3f3f5;
  --muted:rgba(255,255,255,.72);
  --gold:#d6b26a;
  --bad:#ff6b6b;
  --r:16px;
  --shadow:0 14px 40px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;background:radial-gradient(1200px 800px at 15% 10%, rgba(214,178,106,.10), transparent 60%),radial-gradient(900px 700px at 90% 15%, rgba(120,90,255,.08), transparent 55%),var(--bg);color:var(--text)}
.wrap{max-width:980px;margin:0 auto;padding:18px 14px 40px;position:relative;z-index:5}
a{color:inherit;text-decoration:none}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(180deg, rgba(214,178,106,.22), rgba(0,0,0,.2));border:1px solid rgba(214,178,106,.25);box-shadow:var(--shadow);font-weight:800;letter-spacing:.08em;color:var(--gold)}
.name{font-weight:800}
.tag{font-size:12px;color:var(--muted);margin-top:2px}
.hero h1{margin:8px 0 6px;font-size:34px}
.sub{margin:0 0 14px;color:var(--muted);max-width:720px;line-height:1.6}
.section{margin-top:18px}
.section h2{margin:0 0 10px;font-size:20px}
.card{background:linear-gradient(180deg, var(--panel2), var(--panel));border:1px solid rgba(255,255,255,.09);border-radius:var(--r);padding:16px;box-shadow:var(--shadow)}
.grid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:900px){.grid{grid-template-columns:1fr 1fr;}}
.btn{height:44px;padding:0 14px;border-radius:14px;border:1px solid rgba(214,178,106,.35);background:linear-gradient(180deg, rgba(214,178,106,.18), rgba(0,0,0,.2));color:var(--text);cursor:pointer;font-weight:700}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.small{height:38px;border-radius:12px;font-weight:700}
.btn.ghost,.ghost{display:inline-flex;align-items:center;justify-content:center;padding:10px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04)}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.input{flex:1;min-width:220px;height:44px;padding:0 12px;border-radius:14px;border:1px solid rgba(255,255,255,.12);background:rgba(0,0,0,.25);color:var(--text);outline:none}
.input::placeholder{color:rgba(255,255,255,.45)}
.spinbox{display:flex;gap:14px;align-items:center}
.chest{width:74px;height:74px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(0,0,0,.35));border:1px solid rgba(214,178,106,.22);color:var(--gold);font-weight:900}
.chest.shake{animation:shake .65s}
@keyframes shake{0%{transform:rotate(0)}15%{transform:rotate(-8deg)}30%{transform:rotate(9deg)}45%{transform:rotate(-7deg)}60%{transform:rotate(6deg)}100%{transform:rotate(0)}}
.hint{color:var(--muted);font-size:13px;line-height:1.4}
.mini{color:var(--muted);font-size:12px;margin-top:8px;line-height:1.5}
.mini.warn{margin-top:12px}
.result{margin-top:12px}
.badge{display:inline-flex;align-items:center;font-size:12px;padding:6px 10px;border-radius:999px;background:rgba(214,178,106,.16);border:1px solid rgba(214,178,106,.22);color:var(--gold)}
.code{margin-top:10px;font-size:24px;letter-spacing:.12em;font-weight:900}
.coupon{margin-top:6px;color:var(--muted)}
.coupon b{color:var(--text)}
.step{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.stepno{font-size:12px;color:var(--gold);padding:6px 10px;border-radius:999px;border:1px solid rgba(214,178,106,.22);background:rgba(214,178,106,.12)}
.steptitle{font-weight:800}
.p{color:var(--muted);line-height:1.65;margin:8px 0 0}
.copybox{margin-top:12px}
.pre{margin:8px 0 0;padding:12px;border-radius:14px;border:1px solid rgba(255,255,255,.10);background:rgba(0,0,0,.25);overflow:auto;white-space:pre-wrap;color:rgba(255,255,255,.92)}
.footer{margin-top:18px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}


/* ===============================
   Coupon Popup + Spin Animation (Enhance)
   - Safe additive styles
=============================== */

/* Better chest: glow + bounce + sparkle */
.chest{
  position:relative;
  overflow:hidden;
  transition:transform .18s ease, filter .18s ease;
}
.chest::after{
  content:"";
  position:absolute;inset:-60px -80px auto -80px;
  height:160px;
  background:radial-gradient(240px 140px at 30% 30%, rgba(220,179,97,.32), transparent 60%),
             radial-gradient(240px 140px at 75% 40%, rgba(124,92,255,.18), transparent 60%);
  opacity:.75;
  pointer-events:none;
  filter:blur(1px);
}
.chest.spin{
  animation:chestSpin .75s cubic-bezier(.2,.9,.2,1);
  filter:drop-shadow(0 16px 30px rgba(220,179,97,.20));
}
@keyframes chestSpin{
  0%{transform:translateY(0) rotate(0) scale(1)}
  20%{transform:translateY(-2px) rotate(-10deg) scale(1.03)}
  45%{transform:translateY(0) rotate(14deg) scale(1.06)}
  70%{transform:translateY(-1px) rotate(-8deg) scale(1.04)}
  100%{transform:translateY(0) rotate(0) scale(1)}
}
.chest.spark{
  box-shadow:0 0 0 1px rgba(214,178,106,.22), 0 18px 45px rgba(220,179,97,.18);
}

/* overlay + bottom sheet */
.overlay{
  position:fixed;inset:0;
  background:rgba(0,0,0,.42);
  backdrop-filter:blur(8px);
  opacity:0;pointer-events:none;
  transition:.22s ease;
  z-index:50;
}
.overlay.show{opacity:1;pointer-events:auto}

.sheet{
  position:fixed;
  left:50%;
  transform:translateX(-50%) translateY(26px);
  bottom:-70%;
  width:min(560px, calc(100% - 24px));
  background:linear-gradient(180deg, rgba(20,24,38,.98), rgba(14,18,32,.98));
  border:1px solid rgba(255,255,255,.10);
  border-radius:26px;
  box-shadow:0 26px 80px rgba(0,0,0,.65);
  padding:14px 14px 16px;
  z-index:51;
  opacity:0;
  transition:transform .52s cubic-bezier(.2,.9,.2,1), opacity .18s ease;
}
.sheet.show{
  opacity:1;
  transform:translateX(-50%) translateY(0);
  bottom:18px;
}
.handle{
  width:58px;height:6px;border-radius:999px;
  background:rgba(255,255,255,.18);
  margin:2px auto 10px;
}
.sheet-head{display:flex;justify-content:space-between;align-items:center;gap:10px}
.sheet-title{font-weight:950;letter-spacing:.2px}
.iconbtn{
  width:38px;height:38px;border-radius:14px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(0,0,0,.20);
  color:var(--text);
  cursor:pointer;
}
.iconbtn:hover{border-color:rgba(220,179,97,.35)}
.sheet-sub{margin-top:6px;color:var(--muted);font-size:13px;line-height:1.5}

.coupon-box{
  margin-top:12px;
  border-radius:20px;
  border:1px dashed rgba(255,255,255,.18);
  background:
    radial-gradient(900px 280px at 20% 0%, rgba(124,92,255,.14), transparent 55%),
    radial-gradient(820px 260px at 88% 20%, rgba(220,179,97,.20), transparent 58%),
    rgba(0,0,0,.18);
  padding:14px;
  position:relative;
  overflow:hidden;
}
.coupon-row{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.coupon-kicker{font-size:12px;color:rgba(255,255,255,.75)}
.coupon-text{font-weight:950}
.code-row{
  margin-top:12px;
  padding:10px 12px;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(0,0,0,.22);
  display:flex;justify-content:space-between;gap:12px;align-items:center;
}
.code-label{color:rgba(255,255,255,.70);font-size:12px}
.code-val{font-weight:950;letter-spacing:1.2px}

.coupon-actions{display:flex;gap:10px;margin-top:12px}
.coupon-actions .btn{flex:1}

/* toast */
.toast{
  position:fixed;left:50%;bottom:18px;transform:translateX(-50%);
  background:rgba(20,24,38,.92);
  border:1px solid rgba(255,255,255,.10);
  border-radius:14px;
  padding:10px 12px;
  box-shadow:0 18px 55px rgba(0,0,0,.55);
  color:var(--text);
  opacity:0;pointer-events:none;
  transition:.2s ease;
  z-index:9999;
  font-size:13px;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-4px)}

/* confetti */
.confetti{
  position:fixed;
  width:8px;height:14px;
  border-radius:3px;
  opacity:.95;
  z-index:60;
  pointer-events:none;
}



/* Spin button click polish */
#btnSpin{
  position:relative;
  overflow:hidden;
}
#btnSpin::after{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(220px 80px at 30% 40%, rgba(255,255,255,.22), transparent 55%);
  transform:translateX(-65%);
  opacity:0;
  pointer-events:none;
}
#btnSpin.is-press{
  transform:translateY(-1px);
  filter:brightness(1.03);
}
#btnSpin.is-press::after{
  opacity:1;
  animation:btnSweep .55s ease-out;
}
@keyframes btnSweep{
  0%{transform:translateX(-75%);opacity:0}
  15%{opacity:1}
  100%{transform:translateX(65%);opacity:0}
}


/* ================= 红包雨背景（安全叠加，不挡点击） ================= */
#redpacket-rain{
  position:fixed;
  inset:0;
  pointer-events:none;
  overflow:hidden;
  z-index:1; /* .wrap 已提升到 5；弹窗/遮罩仍在更上层 */
}

.redpacket{
  position:absolute;
  top:-60px;
  width:36px;
  height:48px;
  background:linear-gradient(180deg,#ff4d4f,#c80000);
  border-radius:6px;
  box-shadow:0 6px 12px rgba(0,0,0,.25);
  animation:rp_fall linear forwards;
  opacity:.95;
}

.redpacket::after{
  content:"¥";
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  color:#ffd666;
  text-shadow:0 2px 6px rgba(0,0,0,.25);
}

@keyframes rp_fall{
  to{
    transform:translateY(110vh) rotate(360deg);
    opacity:.85;
  }
}