:root{--bg-page:#f0f2f5;--bg-card:#fff;--text-primary:#1a1a1a;--text-secondary:#5c5c5c;--text-muted:#8a8a8a;--accent:#0d9488;--accent-hover:#0f766e;--success:#059669;--error:#b91c1c;--border:#e5e7eb;--radius:14px;--radius-sm:10px;--shadow:0 1px 3px rgba(0,0,0,.06);--shadow-card:0 2px 8px rgba(0,0,0,.06)}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;background:var(--bg-page);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased}.app,body,html{min-height:100vh}.app{padding-bottom:72px;max-width:400px;margin:0 auto}.screen{display:none;padding:20px}.screen.active{display:block;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.header{font-weight:700;font-size:20px;margin-bottom:6px;display:flex;align-items:center;gap:10px;color:var(--text-primary)}.header .sub{font-size:14px;font-weight:500;color:var(--text-secondary)}.back{color:var(--accent);cursor:pointer;font-size:16px;font-weight:500;flex-shrink:0;background:none;border:none;padding:0}.back:hover{text-decoration:underline}.progress-bar{margin-bottom:20px;font-size:13px;color:var(--text-secondary)}.progress-bar .count{font-weight:600;color:var(--accent)}.progress-line{height:4px;background:var(--border);border-radius:2px;margin-top:6px;overflow:hidden}.progress-fill{height:100%;background:var(--accent);border-radius:2px}.card{background:var(--bg-card);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;cursor:pointer;box-shadow:var(--shadow-card);border:1px solid var(--border);transition:box-shadow .15s,transform .1s}.card:active{transform:scale(.99)}.card.locked{opacity:.7;cursor:not-allowed;background:#fafafa}.card.locked:active{transform:none}.card.done{border-left:4px solid var(--success);background:#f0fdf4}.card.current{border-left:4px solid var(--accent);background:#ccfbf1}.card .day{font-size:12px;color:var(--text-muted);font-weight:500}.card .title{font-weight:600;font-size:15px;margin-top:4px;color:var(--text-primary)}.card .status{font-size:12px;margin-top:6px}.card.done .status{color:var(--success)}.card.current .status{color:var(--accent)}.card.locked .status{color:var(--text-muted)}.tabs{position:fixed;bottom:0;left:0;right:0;background:var(--bg-card);border-top:1px solid var(--border);display:flex;padding:10px 0;max-width:400px;margin:0 auto;box-shadow:0 -2px 10px rgba(0,0,0,.04)}.tab{flex:1 1;text-align:center;padding:12px;cursor:pointer;color:var(--text-muted);font-size:15px;font-weight:500;background:none;border:none}.tab.active{color:var(--accent);font-weight:600}.block{background:var(--bg-card);border-radius:var(--radius);padding:16px 18px;margin-bottom:14px;box-shadow:var(--shadow);border:1px solid var(--border)}.block h4{margin:0 0 12px;font-size:14px;font-weight:600;color:var(--text-primary)}.block p{margin:0 0 8px;font-size:14px;color:var(--text-secondary)}.word-row{padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}.word-row:last-child{border-bottom:none}.word-row strong{color:var(--text-primary)}.word-card{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;margin-bottom:10px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;font-size:15px;text-align:left;box-shadow:var(--shadow)}.word-card .word-text{flex:1 1;min-width:0}.word-card strong{color:var(--text-primary)}.word-card .translation{color:var(--text-secondary);margin-left:4px}.word-card .word-arrow{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:rgba(13,148,136,.12);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}input,textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:10px;font-size:15px;font-family:inherit;background:var(--bg-card)}input:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(13,148,136,.12)}textarea{min-height:88px;resize:vertical}.btn{display:block;width:100%;padding:16px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius);font-size:16px;font-weight:600;cursor:pointer;margin-top:24px;font-family:inherit}.btn:hover{background:var(--accent-hover)}.btn:disabled{opacity:.6;cursor:not-allowed}.access-denied{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;padding:20px;text-align:center}.access-denied h1{font-size:22px;margin-bottom:12px}.access-denied p{color:var(--text-secondary)}.loading{padding:40px 20px;text-align:center;color:var(--text-muted)}.search-words input{margin-bottom:0;padding-left:36px}.words-empty{text-align:center;padding:24px 16px;color:var(--text-muted);font-size:14px}.collapse-trigger{display:flex;align-items:center;justify-content:space-between;width:100%;padding:12px 0;background:none;border:none;font-size:14px;font-weight:500;color:var(--accent);cursor:pointer;text-align:left}.collapse-body{padding-top:8px;border-top:1px solid var(--border)}