:root{color-scheme:light;--paper:#f3f0e8;--ink:#17211c;--muted:#5c6a63;--line:#e3ddd2;--card:#fffcf7;--button:#3c5a50;--button-text:#f4f7f5;--mint:#d7f3e4;font-family:Arial,Helvetica,sans-serif}
*{box-sizing:border-box}[hidden]{display:none !important}
body{margin:0;background:var(--paper);color:var(--ink)}
body.embed{background:var(--paper)}
.book{max-width:560px;margin:0 auto;padding:28px 20px 40px}
.book-kicker{margin:0 0 8px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
h1{margin:0;font-size:clamp(32px,6vw,46px);line-height:.95;font-weight:700;letter-spacing:-.03em}
.book-intro{max-width:36em;margin:12px 0 0;color:var(--muted);line-height:1.5}
.pick{border:0;margin:22px 0 0;padding:0;min-width:0;width:100%}
.day-strip{width:100%;min-width:0}
.pick legend{padding:0;margin:0 0 10px;font-size:13px;font-weight:700}
.party-list{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:8px}
.party-list button,.day-strip button,.time-list button{border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit;cursor:pointer}
.party-list button{min-height:46px;border-radius:12px;font-size:16px;font-weight:700}
.day-strip{display:flex;gap:8px;overflow-x:auto;scroll-snap-type:x mandatory;padding:2px 2px 10px;-webkit-overflow-scrolling:touch}
.day-strip button{flex:0 0 72px;scroll-snap-align:start;min-height:78px;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}
.day-strip small{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.day-strip strong{font-size:22px;line-height:1}
.day-strip button:disabled{opacity:.35;cursor:default}
.time-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.time-list button{min-height:46px;border-radius:12px;font-size:16px;font-weight:700}
.party-list button[aria-pressed="true"],.day-strip button[aria-pressed="true"],.time-list button[aria-pressed="true"]{background:var(--button);color:var(--button-text);border-color:var(--button)}
.party-list button:focus-visible,.day-strip button:focus-visible,.time-list button:focus-visible,input:focus-visible,textarea:focus-visible,.send:focus-visible{outline:2px solid var(--button);outline-offset:2px}
.hint,.error{margin:10px 0 0;font-size:14px;color:var(--muted)}
.error{color:#8a3d32}
.choice{margin:0 0 4px;font-weight:700}
.contact{display:grid;gap:12px;margin-top:26px}
label{display:flex;flex-direction:column;gap:8px;font-size:13px;font-weight:700}
input,textarea{width:100%;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:12px;padding:12px 14px;font:inherit;font-size:16px}
textarea{min-height:72px;resize:vertical}
.send{border:0;border-radius:12px;min-height:52px;background:var(--button);color:var(--button-text);font:inherit;font-size:16px;font-weight:700;cursor:pointer}
.send:disabled{opacity:.55;cursor:wait}
.fine{margin:0;color:var(--muted);font-size:13px;line-height:1.45}
.done{margin-top:28px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}
.done h2{margin:0 0 8px;font-size:32px;letter-spacing:-.03em}
.done p{margin:0;color:var(--muted);line-height:1.5}
.done dl{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;margin:18px 0}
.done dt{color:var(--muted)}
.done dd{margin:0;font-weight:700}
.code{display:inline-block;margin-top:4px;background:var(--mint);border-radius:999px;padding:6px 10px;font-weight:700;letter-spacing:.04em}
@media(max-width:640px){
  body{padding-bottom:env(safe-area-inset-bottom)}
  .book{padding:18px 16px 28px}
  h1{font-size:32px}
  .party-list,.time-list{grid-template-columns:repeat(4,minmax(0,1fr))}
  .time-list{grid-template-columns:repeat(3,minmax(0,1fr))}
  .done{padding:18px}
  .done h2{font-size:26px}
}