:root{--bg-1: #0f172a;--bg-2: #1e293b;--card: rgba(15, 23, 42, .65);--line: rgba(148, 163, 184, .32);--text: #f8fafc;--muted: #cbd5e1;--accent: #f59e0b;--accent-2: #fb7185;--shadow: 0 18px 50px rgba(2, 6, 23, .45)}*{box-sizing:border-box}body{margin:0;font-family:"Noto Serif SC","Source Han Serif SC",PingFang SC,Microsoft YaHei,serif;color:var(--text);background:radial-gradient(circle at 10% 10%,#334155 0%,transparent 34%),radial-gradient(circle at 90% 20%,#7c2d12 0%,transparent 28%),linear-gradient(135deg,var(--bg-1),var(--bg-2));min-height:100vh}.page{min-height:100vh;padding:28px 16px 40px}.container{width:min(900px,100%);margin:0 auto;display:grid;gap:16px}.hero{text-align:center;margin-bottom:4px}.eyebrow{margin:0;letter-spacing:.18em;font-size:12px;color:#fde68a}.hero h1{margin:8px 0 4px;font-size:clamp(32px,6vw,46px)}.subtitle{margin:0;color:var(--muted)}.card{border:1px solid var(--line);background:var(--card);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:18px;box-shadow:var(--shadow);padding:18px}.label{display:block;font-size:14px;margin-bottom:8px;color:#fde68a}.input{width:100%;border:1px solid rgba(148,163,184,.5);background:#0f172a94;color:var(--text);border-radius:12px;padding:12px;resize:vertical;min-height:96px;font-size:16px}.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #f59e0b33}.actions{margin-top:12px;display:flex;gap:10px}.btn{border:none;border-radius:999px;padding:10px 16px;font-size:15px;cursor:pointer}.btn:disabled{opacity:.6;cursor:not-allowed}.btn.primary{background:linear-gradient(120deg,var(--accent),var(--accent-2));color:#111827;font-weight:700}.btn.ghost{background:transparent;color:var(--muted);border:1px solid rgba(148,163,184,.5)}.answer-card{text-align:center}.answer-title{margin:0;color:#fde68a;font-size:13px;letter-spacing:.12em}.answer-text{margin:10px 0 0;font-size:clamp(22px,4.2vw,30px);line-height:1.5}.answer-card.drawing .answer-text{animation:pulse .7s ease-in-out infinite alternate}@keyframes pulse{0%{opacity:.55;transform:scale(.98)}to{opacity:1;transform:scale(1)}}.history-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.history-head h2{margin:0;font-size:18px}.history-head span{color:var(--muted);font-size:12px}.empty{color:var(--muted);margin:10px 0 4px}.history-list{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:10px}.history-list li{border:1px solid rgba(148,163,184,.3);border-radius:12px;padding:10px;background:#0f172a66}.q,.a{margin:0;line-height:1.5}.q{color:#e2e8f0;font-size:14px}.a{color:#fde68a;margin-top:4px;font-size:15px}@media (max-width: 640px){.page{padding:18px 12px 28px}.card{border-radius:14px;padding:14px}.actions{flex-direction:column}.btn{width:100%;min-height:42px}.history-head{flex-direction:column;align-items:flex-start;gap:2px}}