:root{--bg:#eef4f7;--ink:#17324a;--muted:#6e8496;--line:#dfe9ef;--card:#fff;--accent:#3f7ea6}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);background:var(--bg);min-height:100vh}button,input,textarea{font:inherit}.app{padding:20px;max-width:1600px;margin:auto}.top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}.title{font-size:clamp(30px,4vw,54px);font-weight:780;letter-spacing:-.035em}.sub{color:var(--muted);margin-top:2px}.version{font-size:12px;background:#fff;padding:4px 8px;border-radius:999px;margin-left:6px}.actions,.row,.screenbar{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.btn{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:13px;padding:11px 15px;font-weight:680;cursor:pointer;min-height:44px}.btn.primary{background:var(--ink);color:#fff;border-color:var(--ink)}.screenbar{margin:0 0 14px}.screenbar .active{background:#dceaf2;border-color:#9ebed1}.day-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(320px,.75fr);gap:16px}.side{display:grid;gap:16px;align-content:start}.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 8px 26px rgba(35,66,88,.06)}.eyebrow{font-size:13px;letter-spacing:.14em;font-weight:800;color:#607d92;margin-bottom:12px}.day-list{display:grid;gap:7px;margin-bottom:12px}.lesson{display:grid;grid-template-columns:58px 6px 1fr auto;align-items:center;min-height:55px;background:#fbfdfe;border:1px solid #e7eef2;border-radius:15px;overflow:hidden}.lesson-num{font-size:22px;font-weight:800;text-align:center;color:#486b84}.lesson-bar{align-self:stretch;background:var(--lesson)}.lesson-main{display:flex;align-items:center;gap:11px;padding:8px 12px;font-size:20px;font-weight:720}.lesson-icon{font-size:24px}.break{display:grid;grid-template-columns:58px 6px 1fr auto;align-items:center;min-height:38px;color:#5e7688}.break .lesson-main{font-size:16px;font-weight:700;padding:4px 12px}.remove{border:0;background:transparent;padding:10px;color:#8aa0af;cursor:pointer}.note{width:100%;min-height:210px;border:0;outline:0;resize:vertical;background:#f7fafc;border-radius:15px;padding:15px;font-size:30px;line-height:1.25;color:var(--ink)}.timer-card{text-align:center}.main-timer{font-size:clamp(64px,8vw,118px);font-weight:780;letter-spacing:-.055em;font-variant-numeric:tabular-nums}.hidden{display:none!important}.board-head{display:flex;justify-content:space-between;align-items:end;gap:12px;margin-bottom:12px}.board-head h1{margin:0;font-size:30px}.board{position:relative;min-height:680px;border:1px dashed #cbdce6;border-radius:22px;background:rgba(255,255,255,.35);overflow:hidden}.board-empty{display:grid;place-items:center;min-height:680px;text-align:center;color:var(--muted);padding:30px}.text-module{position:absolute;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 24px rgba(35,66,88,.08);min-width:240px;min-height:150px;overflow:visible}.module-top{height:52px;display:flex;align-items:center;justify-content:space-between;padding:7px 8px 7px 10px;border-bottom:1px solid #edf2f5}.drag-handle{touch-action:none;cursor:grab;border:0;background:#eef4f7;border-radius:10px;min-width:58px;min-height:38px;font-weight:800;color:#607d92}.module-actions{display:flex;gap:5px}.iconbtn{border:0;background:#f4f7f9;border-radius:9px;min-width:38px;min-height:38px;cursor:pointer}.text-module textarea{display:block;width:100%;height:calc(100% - 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