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.preset-custom-color{padding:3px;background:conic-gradient(#ff3b30,#fc0,#34c759,#32ade6,#5856d6,#ff2d55,#ff3b30);border:0}.preset-color-palette .preset-custom-color i{display:block;width:100%;height:100%;border-radius:5px}.live-ink-canvas{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:2}.pressure-hint{font-size:10px;color:var(--text-dim);margin:-4px 0 4px;line-height:1.4}.download-menu button{display:flex;align-items:center;gap:8px;width:100%;padding:9px 10px;border-radius:7px;font-size:12px;color:var(--text);cursor:pointer;background:transparent;text-align:left;white-space:nowrap}.download-menu button:hover{background:var(--green-pale)}.lecture-fab{position:fixed;left:18px;bottom:78px;z-index:60;display:flex;align-items:center;gap:7px;height:44px;padding:0 15px;border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:0 6px 20px #14281e2e;color:var(--text);font-weight:700;font-size:13px;cursor:pointer;font-variant-numeric:tabular-nums}.lecture-fab.recording{background:#d94c4c;color:#fff;border-color:#d94c4c;animation:lecture-pulse 1.6s ease-in-out infinite}.lecture-fab.paused{background:#f0b429;color:#2b2b2b;border-color:#f0b429}.lecture-fab.finishing{opacity:.8}@keyframes lecture-pulse{0%,to{box-shadow:0 0 #d94c4c73}50%{box-shadow:0 0 0 10px #d94c4c00}}.lecture-panel{position:fixed;left:18px;bottom:130px;z-index:60;width:min(390px,calc(100vw - 36px));max-height:min(64vh,580px);display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 14px 40px #14281e38;overflow:hidden}.lecture-head{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line);font-size:13px}.lecture-head 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