:root{--bg: #fbeee7;--card: #fff;--line: #f1e3db;--txt: #26211e;--sub: #8d8078;--acc: #e8492b;--acc2: #ff8a4d;--grad: linear-gradient(135deg, #ff8a4d, #e8492b);--green: #0d9458;--red: #d93026;--orange: #ee8b18;--purple: #7c5cd6;--teal: #0e9aa7;--soft: #fff1ea;--shadow: 0 10px 28px rgba(210, 90, 45, .09)}*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(165deg,#fdf4ef 0%,var(--bg) 55%,#f9e4da 100%);background-attachment:fixed;color:var(--txt);font:13px/1.65 -apple-system,PingFang SC,Microsoft YaHei,sans-serif}button{font:inherit;cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:99px;padding:3px 12px;transition:.15s}button:hover{border-color:var(--acc);color:var(--acc)}button:disabled{opacity:.45;cursor:default}button.pri{background:var(--grad);border:none;color:#fff;box-shadow:0 4px 12px #e8492b47}button.pri:hover{filter:brightness(1.06);color:#fff}button.danger:hover{border-color:var(--red);color:var(--red)}select,input,textarea{font:inherit;border:1px solid var(--line);border-radius:10px;padding:4px 9px;background:#fff;outline:none;transition:.15s}select:focus,input:focus,textarea:focus{border-color:var(--acc2);box-shadow:0 0 0 3px #ff8a4d29}a{color:var(--acc)}.topbar{position:sticky;top:10px;z-index:5;display:flex;align-items:center;gap:10px;margin:10px 12px 0;padding:8px 16px;background:#ffffffe0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.7);border-radius:16px;box-shadow:var(--shadow);flex-wrap:wrap}.brand{font-weight:800;font-size:15px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap}.brand 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0}.ansbar{position:sticky;bottom:12px;z-index:4;display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:14px 0 4px;padding:10px 14px;background:#ffffffeb;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;box-shadow:0 8px 26px #a03c1924}.abtn{width:46px;height:46px;border-radius:13px;border:1.5px solid #ded2ca;background:#fff;font-size:16px;font-weight:700;color:#3c3531;transition:.15s}.abtn:hover:not(:disabled){border-color:var(--acc2);color:var(--acc)}.abtn:disabled{opacity:.55}.abtn.sel{background:var(--grad);border-color:transparent;color:#fff;opacity:1;box-shadow:0 4px 12px #e8492b4d}.abtn.right{background:#e2f4ea;border-color:var(--green);color:var(--green);opacity:1}.abtn.wrong{background:#fbe7e5;border-color:var(--red);color:var(--red);opacity:1}.ansbar .verdict,.ansbar .hint{margin-left:8px}button:focus-visible{outline:2px solid 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