:root{
  --bg:#f5f3ff;--card:#fff;--ink:#1e1b4b;--muted:#6b6894;--line:#e4e0f7;
  --brand:#5b21b6;--brand2:#7c3aed;--accent:#f59e0b;--teal:#0d9488;--ok:#16a34a;--bad:#dc2626;
  --night:#1e1b4b;--night2:#312e81;
  /* 选项色：万花筒六色，顺序经过色盲区分度校验（dataviz validate_palette：相邻 CVD ΔE ≥ 16） */
  --c0:#7c3aed;--c1:#16a34a;--c2:#0891b2;--c3:#ea580c;--c4:#2563eb;--c5:#db2777;
  --r:16px;--shadow:0 10px 30px rgba(30,27,75,.10)
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--ink);min-height:100vh;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--brand2)}
.logo{font-family:"Fredoka","Noto Sans SC",sans-serif;font-weight:700;letter-spacing:.5px;display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:inherit}
.logo i{display:block;width:38px;height:38px;border-radius:12px;background:url(/icon.svg) center/cover;flex:none}
.logo small{display:block;font-family:"Noto Sans SC",sans-serif;font-size:11px;font-weight:600;opacity:.65;letter-spacing:0}
.topbar{display:flex;align-items:center;gap:12px;padding:12px 20px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.topbar .sp{flex:1}
.wrap{max-width:1080px;margin:0 auto;padding:24px 18px 60px}
.btn{border:0;border-radius:12px;padding:11px 18px;font-weight:800;font-size:15px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;justify-content:center;text-decoration:none;transition:transform .1s,filter .15s;white-space:nowrap}
.btn:active{transform:translateY(2px)}
.btn:hover{filter:brightness(1.05)}
.btn.main{background:var(--brand2);color:#fff;box-shadow:0 4px 0 #4c1d95}
.btn.go{background:var(--accent);color:#3b2603;box-shadow:0 4px 0 #b45309}
.btn.ghost{background:#fff;border:1.5px solid var(--line);color:var(--ink)}
.btn.sm{padding:7px 12px;font-size:13px;border-radius:10px}
.btn.danger{color:var(--bad)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:20px}
.field{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:700;color:var(--muted)}
.field input,.field select,.field textarea,.in{padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;background:#fff;font-size:15px;color:var(--ink);font-weight:500;width:100%}
.in:focus,.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand2);box-shadow:0 0 0 3px rgba(124,58,237,.15)}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.muted{color:var(--muted)}
.err{color:var(--bad);font-size:14px;font-weight:700;min-height:20px}
.tag{display:inline-block;font-size:12px;font-weight:800;padding:2px 9px;border-radius:999px;background:#ede9fe;color:var(--brand)}
.lang{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:5px 12px;font-weight:800;font-size:13px;cursor:pointer}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 18px;border-radius:12px;font-weight:700;z-index:999;animation:tin .25s}
@keyframes tin{from{opacity:0;transform:translate(-50%,10px)}}
/* 选项：颜色 + 字母徽章 + 底纹，三重区分 */
.shape{display:inline-grid;place-items:center;width:1.5em;height:1.5em;border-radius:50%;background:rgba(255,255,255,.92);color:var(--oc,var(--ink));font-family:"Fredoka",sans-serif;font-weight:700;font-size:.85em;line-height:1;flex:none;box-shadow:0 2px 0 rgba(0,0,0,.15)}
.shape .ic{width:1.05em;height:1.05em;vertical-align:0}
.opt0,.opt1,.opt2,.opt3,.opt4,.opt5{background-color:var(--oc);--tx:rgba(255,255,255,.11)}
.opt0{--oc:var(--c0);background-image:repeating-linear-gradient(45deg,var(--tx) 0 2px,transparent 2px 12px)}
.opt1{--oc:var(--c1);background-image:radial-gradient(var(--tx) 2px,transparent 2.5px);background-size:12px 12px}
.opt2{--oc:var(--c2);background-image:repeating-linear-gradient(-45deg,var(--tx) 0 2px,transparent 2px 12px)}
.opt3{--oc:var(--c3);background-image:linear-gradient(var(--tx) 2px,transparent 2px),linear-gradient(90deg,var(--tx) 2px,transparent 2px);background-size:14px 14px}
.opt4{--oc:var(--c4);background-image:repeating-linear-gradient(0deg,var(--tx) 0 2px,transparent 2px 10px)}
.opt5{--oc:var(--c5);background-image:repeating-linear-gradient(90deg,var(--tx) 0 2px,transparent 2px 10px)}
.night{background:radial-gradient(ellipse at 20% 0%,#4c1d95,transparent 60%),radial-gradient(ellipse at 100% 100%,#0f766e,transparent 55%),var(--night);color:#fff}
@media (max-width:640px){.wrap{padding:16px 12px 40px}.topbar{padding:10px 12px}}
.modepick{position:fixed;inset:0;z-index:200;background:rgba(30,27,75,.55);display:grid;place-items:center;padding:16px}
.mp-box{background:#fff;color:var(--ink);border-radius:22px;padding:22px;width:min(520px,100%);display:flex;flex-direction:column;gap:12px;animation:tin .2s}
.mp-box h2{font-size:20px}
.mp-card{display:block;border:2px solid var(--line);border-radius:16px;padding:14px 16px;text-decoration:none;color:inherit}
a.mp-card:hover{border-color:var(--brand2);background:#faf8ff}
.mp-card b{display:block;font-size:18px;margin-bottom:4px}
.mp-card span{font-size:14px;color:var(--muted);line-height:1.6}
.mp-min{display:flex;gap:8px;margin-top:10px}
.mp-x{align-self:flex-end}
/* 收集卡 */
.kc{position:relative;width:96px;height:132px;border-radius:14px;border:3px solid #cbd5e1;background:linear-gradient(160deg,#fff,#eef2ff);color:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer;padding:6px;box-shadow:0 6px 16px rgba(0,0,0,.18)}
.kc.r-r{border-color:#60a5fa;background:linear-gradient(160deg,#fff,#dbeafe)}
.kc.r-e{border-color:#f59e0b;background:linear-gradient(160deg,#fffbeb,#fde68a);box-shadow:0 0 0 3px rgba(245,158,11,.25),0 6px 16px rgba(0,0,0,.2)}
.kc-ch{font-family:"Noto Serif SC","Songti SC",serif;font-size:48px;font-weight:900;line-height:1.1}
.kc-emo{font-size:40px;line-height:1.1}
.kc-nm{font-size:12px;font-weight:800;text-align:center;line-height:1.2}
.kc-r{font-size:10px;font-weight:800;color:var(--muted);margin-top:auto}
.kc.r-e .kc-r{color:#b45309}.kc.r-r .kc-r{color:#1d4ed8}
.kc-new{position:absolute;top:-8px;right:-8px;background:var(--bad);color:#fff;font-size:10px;font-weight:900;border-radius:999px;padding:2px 6px}
.kc-n{position:absolute;top:4px;left:6px;font-size:11px;font-weight:900;color:var(--muted)}
.kc.flip{animation:kflip .7s backwards}
@keyframes kflip{0%{transform:rotateY(90deg) scale(.6);opacity:0}60%{transform:rotateY(-10deg) scale(1.08);opacity:1}100%{transform:none}}
.kc-reward{display:flex;flex-direction:column;align-items:center;gap:10px;margin-top:6px}
.kc-title{font-weight:900;font-size:17px}
.kc-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.kc-link{color:#fde68a;font-weight:800;text-decoration:none}
.kb{width:min(340px,92vw);border-radius:22px;border:4px solid #cbd5e1;background:linear-gradient(160deg,#fff,#eef2ff);color:var(--ink);padding:18px;text-align:center;display:flex;flex-direction:column;gap:8px;animation:tin .25s}
.kb.r-r{border-color:#60a5fa;background:linear-gradient(160deg,#fff,#dbeafe)}
.kb.r-e{border-color:#f59e0b;background:linear-gradient(160deg,#fffbeb,#fde68a)}
.kb-top{font-size:13px;font-weight:800;color:var(--muted)}
.kb-ch{font-family:"Noto Serif SC","Songti SC",serif;font-size:120px;font-weight:900;line-height:1.05}
.kb-py{font-size:22px;font-weight:700;color:var(--brand2);min-height:28px}
.kb-emo{font-size:96px;line-height:1.1}
.kb-nm{font-size:24px;font-weight:900}.kb-nm small{display:block;font-size:13px;color:var(--muted);font-weight:700}
.kb-facts{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.kb-facts span{background:rgba(255,255,255,.8);border:1px solid var(--line);border-radius:999px;padding:3px 10px;font-size:13px;font-weight:700}
.kb-ety{background:rgba(255,255,255,.85);border-radius:14px;padding:10px 12px;font-size:14px;line-height:1.6;text-align:left}
.kb-ety b{display:block;color:var(--brand2);margin-bottom:2px}
.kb-ety small{color:var(--muted)}
.pw-wrap{position:relative;display:block}
.pw-wrap input{width:100%;padding-right:46px}
.pw-eye{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:36px;height:36px;border:0;border-radius:10px;background:none;color:var(--muted);cursor:pointer;display:grid;place-items:center}
.pw-eye:hover{color:var(--brand2);background:#f3f0ff}
.pw-eye:focus-visible{outline:2px solid var(--brand2);outline-offset:1px}
.ic{width:1.15em;height:1.15em;vertical-align:-.2em;flex:none;display:inline-block}
.ic.lg{width:1.6em;height:1.6em}
.ic.xl{width:2.2em;height:2.2em}
.subj{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;flex:none}
.subj .ic{width:19px;height:19px}
.mp-card b .ic{color:var(--brand2)}
.bigic{display:inline-grid;place-items:center;width:104px;height:104px;border-radius:50%;background:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.bigic .ic{width:58px;height:58px;stroke-width:2.5}
.bigic.ok{color:#16a34a}.bigic.bad{color:#dc2626}.bigic.late{color:#d97706}