:root{--paper:#efe9b8;--light:#fbfaf2;--ink:#171612;--muted:#756f5e;--danger:#8b2525;--ok:#1f6a44;--line:2px solid var(--ink);--shadow:5px 5px 0 #17161222}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans TC",system-ui,sans-serif}.admin-header{min-height:72px;padding:10px 18px;display:flex;justify-content:space-between;align-items:center;border-bottom:var(--line);background:#fbfaf2}.admin-header div:first-child{display:flex;flex-direction:column}.admin-header small{font-size:.68rem;font-weight:900;letter-spacing:.14em}.admin-header strong{font-size:1.25rem}.admin-header em{font-style:normal;font-size:.6em;letter-spacing:.12em}.admin-header button,.admin-header a{padding:8px 11px;border:var(--line);border-radius:9px;background:#fff;color:inherit;text-decoration:none;font-weight:900}.admin-shell{width:min(1260px,calc(100% - 24px));margin:24px auto 50px}.login-panel{max-width:520px;margin:12vh auto;padding:28px;border:var(--line);border-radius:18px;background:var(--light);box-shadow:var(--shadow)}.editor-layout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(330px,.8fr);gap:18px}.preview-card,.control-card{padding:16px;border:var(--line);border-radius:18px;background:var(--light);box-shadow:var(--shadow)}.section-title{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.section-title small{font-weight:900;color:var(--muted)}.section-title h1{margin:3px 0 10px}.section-title>span{padding:5px 8px;border-radius:8px;background:#ece7d4;font-size:.75rem;font-weight:900}.board-host{aspect-ratio:1;overflow:hidden;border:1px solid #aca58e;border-radius:14px;background:#fff;touch-action:none}.board-host svg{display:block;width:100%;height:100%}.legacy-image{display:block;width:100%;aspect-ratio:1;object-fit:contain;border:1px solid #aca58e;border-radius:14px;background:#fff}.notice{margin-top:10px;padding:12px;border:1px solid #9c7620;border-radius:10px;background:#fff5cf}.notice p{margin:0 0 8px}.tile-tools{display:flex;align-items:center;gap:8px;margin-top:10px;flex-wrap:wrap}.tile-tools button,.button-row button,.publish-actions button,details button{min-height:38px;padding:7px 10px;border:var(--line);border-radius:9px;background:#fff;font-weight:900}.control-card{align-self:start;position:sticky;top:12px}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}label{display:flex;flex-direction:column;gap:4px;font-size:.73rem;font-weight:900}input,select{width:100%;height:40px;padding:7px 9px;border:var(--line);border-radius:9px;background:#fff;font:inherit}input[readonly]{background:#ece7d4}.button-row,.publish-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}.solve-button,.primary-button{width:100%;min-height:46px;margin-top:10px;padding:9px 12px;border:var(--line);border-radius:10px;background:var(--ink);color:#fff;font-weight:900;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.solve-button:disabled,.primary-button:disabled{opacity:.5}.answer-preview{margin-top:12px;padding:10px;border:var(--line);border-radius:10px;background:#fff}.answer-tabs{display:flex;gap:5px}.answer-tabs button{flex:1;padding:6px;border:1px solid var(--ink);border-radius:7px;background:#fff;font-weight:900}.answer-tabs button.active{background:var(--ink);color:#fff}.answer-preview small{display:block;margin:9px 0;color:var(--muted);font-weight:800}.answer-preview pre{min-height:120px;margin:0;white-space:pre-wrap;font:inherit;line-height:1.55}.status{min-height:1.4em;margin:8px 0 0;font-size:.82rem;font-weight:800;color:var(--muted);white-space:pre-wrap}.status.error{color:var(--danger)}.status.success{color:var(--ok)}details{margin-top:12px}summary{cursor:pointer;font-weight:900}@media(max-width:900px){.editor-layout{grid-template-columns:1fr}.control-card{position:static}.admin-shell{margin-top:12px}}@media(max-width:480px){.admin-header{padding:8px 10px}.admin-header strong{font-size:1.05rem}.admin-shell{width:calc(100% - 16px)}.preview-card,.control-card{padding:10px}.field-grid{grid-template-columns:1fr 1fr}.tile-tools button{flex:1}.answer-preview pre{min-height:100px}}