:root{
  --bg:#F4F1EF; --surface:#FFFFFF; --surface-2:#F6F3F1; --ink:#2A1F1F; --muted:#7A6B69; --line:#E6DEDA;
  --red:#B83A3A; --red-ink:#FFF6EE; --red-soft:#F8E6E3; --ok:#2E7D57; --ok-soft:#E3F2EA; --warn:#9A6210; --warn-soft:#F7ECD7;
  --serif:"Songti SC","STSong","Noto Serif SC","SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root{
    color-scheme:dark;
    --bg:#161212; --surface:#211B1B; --surface-2:#2A2222; --ink:#F1E9E6; --muted:#B3A4A1; --line:#3A3030;
    --red:#D9625A; --red-ink:#1A0F0F; --red-soft:#3B2120; --ok:#5DC28F; --ok-soft:#163026; --warn:#E2A64C; --warn-soft:#342812;
  }
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-text-size-adjust:100%}
.wrap{max-width:520px;margin:0 auto;padding:0 16px calc(40px + env(safe-area-inset-bottom,0px))}
.hero{background:var(--red);color:var(--red-ink);text-align:center;padding:calc(28px + env(safe-area-inset-top,0px)) 16px 26px;margin:0 -16px 18px}
.hero .xi{font-family:var(--serif);font-weight:700;font-size:30px;line-height:1;width:50px;height:50px;margin:0 auto 10px;border:1.5px solid currentColor;border-radius:4px;display:grid;place-items:center}
.hero-img{display:block;width:calc(100% + 32px);max-width:none;height:auto;margin:0 -16px;aspect-ratio:4/3;background:#D44652}
.hero.slim{padding:12px 16px 16px;background:#D44652;color:#FFF8EE}
.hero.slim h1{font-size:21px}
.hero h1{font-family:var(--serif);font-size:24px;margin:0;letter-spacing:.08em;font-weight:700}
.hero p{margin:4px 0 0;font-size:14px;opacity:.9}
.card{background:var(--surface);border-radius:14px;padding:18px 16px;margin-bottom:14px;border:1px solid var(--line)}
.card h2{font-family:var(--serif);font-size:18px;margin:0 0 12px}
.field{display:grid;gap:6px;margin-bottom:14px}
.field > span{font-size:14px;color:var(--muted)}
.field > span b{color:var(--red);font-weight:400}
input,select,textarea{font:inherit;font-size:16px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:9px;padding:10px 12px;width:100%;min-width:0;-webkit-appearance:none;appearance:none}
select{background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:30px}
textarea{resize:vertical;min-height:70px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--red);outline-offset:0;border-color:transparent}
.two{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.seg button{font:inherit;font-size:15px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:7px 15px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--red);border-color:var(--red);color:var(--red-ink)}
.step{display:flex;align-items:center;border:1px solid var(--line);border-radius:9px;overflow:hidden}
.step button{font:inherit;font-size:20px;width:44px;height:44px;border:0;background:var(--surface-2);color:var(--ink);cursor:pointer}
.step output{flex:1;text-align:center;font-family:var(--mono);font-size:17px}
.step-l{font-size:13px;color:var(--muted);margin-bottom:4px}
.check{display:flex;align-items:center;gap:10px;font-size:15px;padding:4px 0}
.check input{width:20px;height:20px;padding:0;-webkit-appearance:checkbox;appearance:auto;accent-color:var(--red)}
.comp{border:1px solid var(--line);border-radius:12px;padding:12px;margin-bottom:10px;background:var(--surface-2)}
.comp .top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;font-size:14px;color:var(--muted)}
.link{font:inherit;font-size:14px;background:none;border:0;color:var(--red);padding:4px 0;cursor:pointer}
.btn{display:block;width:100%;font:inherit;font-size:17px;font-weight:600;text-align:center;text-decoration:none;border:0;border-radius:12px;padding:13px;background:var(--red);color:var(--red-ink);cursor:pointer}
.btn.ghost{background:var(--surface);color:var(--red);border:1px solid var(--red)}
.btn:disabled{opacity:.55}
.err{color:var(--red);font-size:14px;margin:-6px 0 12px}
.msg{border-radius:12px;padding:14px 16px;margin-bottom:14px;font-size:15px}
.msg.ok{background:var(--ok-soft);color:var(--ok)}
.msg.warn{background:var(--warn-soft);color:var(--warn)}
.msg.bad{background:var(--red-soft);color:var(--red)}
.muted{color:var(--muted);font-size:14px}
.row{display:flex;gap:12px;padding:10px 0;border-top:1px solid var(--line)}
.row:first-of-type{border-top:0}
.row .k{flex:none;width:2.4em;font-family:var(--serif);font-weight:700;color:var(--red);font-size:17px}
.row .v{flex:1;min-width:0}
.row .big{font-weight:600}
.tag{display:inline-block;font-size:12px;padding:1px 8px;border-radius:999px;background:var(--red-soft);color:var(--red);vertical-align:1px}
.mono{font-family:var(--mono)}
[hidden]{display:none!important}