:root{color-scheme:light;--ink:#20201d;--muted:#6c6a62;--paper:#f5f2ea;--card:#fffdf8;--accent:#df5b3f;--line:#dcd6c9;--shadow:0 18px 55px rgba(54,48,35,.09);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);min-height:100vh}.shell{width:min(760px,100%);margin:auto;padding:calc(32px + env(safe-area-inset-top)) 20px calc(36px + env(safe-area-inset-bottom))}.hero{padding:28px 4px 38px}.eyebrow{font:700 11px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.18em;color:var(--accent);margin:0 0 14px}.hero h1{font-family:Georgia,"Songti SC",serif;font-size:clamp(38px,9vw,64px);font-weight:500;letter-spacing:-.035em;margin:0;line-height:1.08}.subtitle{font-size:16px;line-height:1.7;color:var(--muted);margin:18px 0 0}.card{display:grid;grid-template-columns:58px 1fr;gap:18px;background:var(--card);border:1px solid rgba(39,37,31,.1);border-radius:24px;padding:24px;margin:0 0 18px;box-shadow:var(--shadow)}.step-number{font:700 12px/1 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--accent);padding-top:7px}.card h2{font-family:Georgia,"Songti SC",serif;font-size:25px;font-weight:500;margin:0 0 8px}.muted{color:var(--muted);font-size:14px;line-height:1.6;margin:0 0 22px}.heading-row{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.card-body{min-width:0}label{display:block;font-weight:650;font-size:14px;margin:20px 0 9px}input,textarea{width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--ink);font:inherit;font-size:16px;outline:none;transition:.2s border,.2s box-shadow}input{height:48px;padding:0 14px}textarea{padding:14px;resize:vertical;line-height:1.65}input:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(223,91,63,.12)}button{border:0;border-radius:14px;background:var(--ink);color:white;padding:0 20px;height:48px;font:700 15px/1 inherit;cursor:pointer;white-space:nowrap}button:disabled{opacity:.45;cursor:wait}.row{display:grid;grid-template-columns:1fr auto;gap:10px}.action-row{display:flex;justify-content:space-between;align-items:center;margin-top:12px;color:var(--muted);font:12px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace}.quiet{background:transparent;color:var(--muted);height:auto;padding:5px;font-size:13px}.secondary{background:var(--accent);margin-top:20px}.result{white-space:pre-wrap;background:#f2eee5;border-left:3px solid var(--accent);border-radius:0 14px 14px 0;padding:18px;font-size:15px;line-height:1.8;margin:18px 0 24px}.score-result{font-size:16px}.error{min-height:20px;color:#b43725;font-size:13px;margin:9px 0 0}.global-error{text-align:center}.hidden{display:none!important}.loading{position:fixed;inset:0;background:rgba(245,242,234,.82);backdrop-filter:blur(7px);display:grid;place-content:center;text-align:center;z-index:10}.loading span{width:34px;height:34px;border:3px solid #d8d1c3;border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:auto}.loading p{color:var(--muted);font-size:14px;margin:14px 0}footer{text-align:center;color:#89867d;font-size:11px;line-height:1.6;padding:22px 14px}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:560px){.shell{padding-left:14px;padding-right:14px}.hero{padding-left:10px}.card{grid-template-columns:36px;gap:8px;padding:20px 16px;border-radius:20px}.row{grid-template-columns:1fr}.row button{width:100%}}
.card-body{width:100%;max-width:100%}
.heading-row h2{min-width:0;white-space:nowrap;overflow-wrap:normal}
textarea{display:block;min-height:160px}
@media(max-width:560px){
  .shell{padding-left:14px;padding-right:14px}
  .hero{padding:22px 8px 30px}
  .hero h1{font-size:42px}
  .subtitle{font-size:15px}
  .card{display:block;width:100%;padding:20px 18px;border-radius:20px}
  .step-number{padding:0;margin:0 0 18px}
  .card-body{display:block;width:100%;min-width:100%}
  .card h2{font-size:26px}
  .heading-row{width:100%;align-items:center}
  .heading-row h2{flex:1 1 auto}
  .quiet{flex:0 0 auto}
  textarea{width:100%;min-height:190px;font-size:17px;line-height:1.65}
  #rewrite{min-height:160px}
  .result{font-size:16px;padding:16px}
  .row{grid-template-columns:1fr}
  .row button{width:100%}
}