:root,:root[data-theme=dark]{--bg: #0f1216;--panel: #161b22;--panel-2: #1c232d;--text: #e6edf3;--muted: #9aa7b4;--border: #2b3440;--accent: #4c8dff;--accent-text: #ffffff;--xhl: rgba(76, 141, 255, .28);--play: rgba(255, 206, 84, .45);--play-text: #1b1b1b;--green: #3fb950;--amber: #d29922;--red: #f85149;--kbd-bg: #2d3542;--shadow: rgba(0, 0, 0, .5)}:root[data-theme=light]{--bg: #f6f8fb;--panel: #ffffff;--panel-2: #eef1f6;--text: #1a2029;--muted: #5a6672;--border: #d6dce4;--accent: #2563eb;--accent-text: #ffffff;--xhl: rgba(37, 99, 235, .18);--play: rgba(255, 196, 61, .6);--play-text: #1b1b1b;--green: #1a7f37;--amber: #9a6700;--red: #cf222e;--kbd-bg: #e2e7ee;--shadow: rgba(20, 30, 50, .18)}:root{font-family:system-ui,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background-color:var(--bg);color:var(--text)}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--panel)}.brand{font-weight:700;font-size:18px}.brand-sub{color:var(--muted);font-weight:500;font-size:14px;margin-left:6px}.header-actions{display:flex;gap:8px}kbd{background:var(--kbd-bg);border:1px solid var(--border);border-radius:4px;padding:1px 6px;font-size:11px;color:var(--text)}.app-main{flex:1;padding:16px 20px;display:flex;flex-direction:column;gap:14px}.input-panel{max-width:760px;margin:24px auto;width:100%}.input-hint{color:var(--muted);font-size:14px}.input-area{width:100%;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:12px;font-size:15px;line-height:1.5;resize:vertical}.input-actions{display:flex;gap:10px;margin-top:12px}.btn{border:1px solid var(--border);background:var(--panel-2);color:var(--text);padding:7px 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var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.word{border-radius:3px;cursor:default}.xhl{background:var(--xhl)}.playing{background:var(--play);color:var(--play-text)}.score-match{color:var(--green);text-decoration:underline;text-decoration-color:var(--green)}.score-low{color:var(--amber);text-decoration:underline;text-decoration-color:var(--amber)}.score-substituted,.score-missing{color:var(--red);text-decoration:underline wavy;text-decoration-color:var(--red)}.dict-popup{position:fixed;z-index:50;max-width:340px;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;box-shadow:0 8px 24px 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