:root{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased;--echo-bg: #faf9f7;--echo-surface: #ffffff;--echo-sunken: #f4f2ee;--echo-line: #eceae6;--echo-text-1: #1c1b19;--echo-text-2: #6d6a65;--echo-text-3: #a3a09b;--echo-accent: #4f46e5;--echo-accent-soft: #e7e4ff;--echo-ok: #15803d;--echo-warn: #b45309;--echo-danger: #b91c1c;--echo-radius: 8px;--echo-radius-lg: 14px}html,body,#root{margin:0;height:100%}body{background:var(--echo-bg);color:var(--echo-text-1)}.echo-surface{background:var(--echo-surface);border-radius:var(--echo-radius-lg);box-shadow:0 1px 2px #1c1b190d,0 10px 28px -18px #1c1b1959}.echo-num{font-variant-numeric:tabular-nums}.echo-pick{padding:9px 11px;border-radius:var(--echo-radius);cursor:pointer;transition:background .12s}.echo-pick:hover{background:var(--echo-line)}.echo-pick[data-active=true]{background:var(--echo-surface);box-shadow:0 1px 2px #1c1b190f}.echo-starter{border:1px solid var(--echo-line);background:var(--echo-surface);border-radius:var(--echo-radius-lg);padding:18px 20px;display:flex;flex-direction:column;gap:14px;cursor:text;transition:border-color .15s,box-shadow .15s}.echo-starter:hover{border-color:#c7c2ff;box-shadow:0 1px 2px #1c1b190d,0 12px 30px -20px #4f46e58c}.echo-row{padding:13px 12px;border-radius:9px;cursor:pointer;transition:background .12s}.echo-row:hover{background:var(--echo-sunken)}.echo-dot-box{width:34px;height:34px;flex-shrink:0;border-radius:var(--echo-radius);display:flex;align-items:center;justify-content:center}.echo-alert{background:#fdf6ec;border-radius:11px;padding:14px 15px;display:flex;flex-direction:column;gap:10px}.echo-ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.echo-para{padding:9px 8px;border-radius:var(--echo-radius);font-size:15px;line-height:1.95;color:#2a2825;cursor:text;white-space:pre-wrap;transition:background .12s}.echo-para:hover{background:#f7f5f1}.echo-footer{padding:13px 20px;background:#fbfaf8}.echo-step{animation:echo-rise .28s ease-out both}@keyframes echo-rise{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}.echo-caret{display:inline-block;width:2px;height:17px;margin-inline-start:8px;vertical-align:-3px;background:var(--echo-accent);animation:echo-caret 1s steps(1) infinite}@keyframes echo-caret{0%,45%{opacity:1}55%,to{opacity:0}}@media(prefers-reduced-motion:reduce){.echo-step,.echo-caret{animation:none}}.echo-cover{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eef2ff,#e0f2fe);color:#6366f1;border-radius:var(--echo-radius)}.echo-muted{color:var(--echo-text-3);font-size:12px}.echo-clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}