:root{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#24231f;background:#f7f6f1;font-synthesis:none;--ink:#24231f;--muted:#77756d;--line:#e5e2d9;--paper:#fff;--accent:#ec6b4d;--accent-dark:#d65336}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input,textarea,select{font:inherit}button{cursor:pointer}.app-shell{display:flex;min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:250px;background:#272721;color:#e9e8e1;padding:27px 17px 20px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:11px;padding:0 10px 30px}.brand-mark{width:39px;height:39px;border-radius:12px;background:var(--accent);display:grid;place-items:center;color:#fff;transform:rotate(-4deg)}.brand strong{display:block;font-weight:700;font-size:21px}.brand span{display:block;color:#9d9d93;font-size:11px;letter-spacing:.08em}.sidebar nav{display:grid;gap:5px}.sidebar nav button{border:0;background:transparent;color:#aaa9a0;border-radius:9px;padding:10px 12px;display:flex;gap:11px;align-items:center;text-align:left;font-weight:600;font-size:14px}.sidebar nav button svg{width:18px}.sidebar nav button em{margin-left:auto;font-style:normal;background:#3d3d36;border-radius:20px;padding:2px 8px;font-size:11px}.sidebar nav button.active{background:#3a3932;color:#fff}.sidebar nav button.active svg{color:#ff8a6f}.sidebar nav .due-badge{background:var(--accent);color:#fff}.sidebar-section{border-top:1px solid #3b3a34;margin-top:27px;padding:22px 11px 0}.sidebar-section>p{color:#74746c;font-weight:700;font-size:10px;letter-spacing:.14em;margin:0 0 14px}.status-row{display:flex;align-items:center;gap:9px;font-size:12px;color:#b9b8b0;margin:11px 0}.status-row b{margin-left:auto;font-size:11px;color:#77766f}.dot{width:8px;height:8px;border-radius:50%;display:inline-block;flex:none}.dot.todo,.status-pill.todo i{background:#aaa89e}.dot.waiting,.status-pill.waiting i{background:#e7ad51}.dot.learning,.status-pill.learning i{background:#5a87c9}.dot.mastered,.status-pill.mastered i{background:#5fa481}.tag-list{display:flex;flex-wrap:wrap;gap:5px}.tag-list>p{width:100%}.tag-list button{border:0;background:transparent;color:#aaa9a0;padding:5px 3px;display:flex;align-items:center;gap:5px;font-size:12px}.tag-list button.selected{color:#ff8a6f}.sidebar-foot{margin-top:auto;color:#66665e;font-size:10px;padding:0 11px;line-height:1.5}.close-sidebar,.scrim{display:none}main{margin-left:250px;min-width:0;flex:1}main>header{height:74px;background:#ffffffd9;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 42px;gap:20px;position:sticky;top:0;backdrop-filter:blur(12px);z-index:10}.search{display:flex;align-items:center;gap:9px;color:#9a988f;flex:1;max-width:520px}.search input{border:0;background:transparent;outline:0;width:100%;font-size:13px}.search button{border:0;background:none;color:#999}.primary{border:0;background:var(--accent);color:#fff;border-radius:9px;padding:10px 15px;display:flex;align-items:center;gap:7px;font-weight:700;font-size:13px;box-shadow:0 4px 12px #ec6b4d25}.primary:hover{background:var(--accent-dark)}.menu-button{display:none!important}.icon-button{border:0;background:transparent;padding:6px;color:inherit}.content{padding:45px 42px 70px;max-width:1600px;margin:auto}.page-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:29px}.page-title p{color:var(--accent);font-weight:700;letter-spacing:.14em;font-size:10px;margin:0 0 8px}.page-title h1{font-weight:700;font-size:29px;margin:0 0 6px;letter-spacing:-.04em}.page-title span{font-size:13px;color:var(--muted)}.active-filter{display:inline-flex;background:#fff;border:1px solid var(--line);padding:6px 8px 6px 12px;border-radius:20px;gap:5px;align-items:center;font-size:11px;margin-bottom:20px}.active-filter button{border:0;background:none;display:grid;place-items:center}.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:17px}.step-card{background:var(--paper);border:1px solid var(--line);border-radius:13px;padding:18px;box-shadow:0 2px 5px #36352e08;transition:.18s;min-width:0}.step-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #36352e10;border-color:#d7d3c8}.card-top{display:flex;justify-content:space-between;align-items:center}.status-pill{display:inline-flex;align-items:center;gap:6px;background:#f4f3ef;padding:5px 9px;border-radius:20px;font-size:10px;font-weight:700;color:#65635c}.status-pill i{width:6px;height:6px;border-radius:50%}.more{border:0;background:none;color:#aaa89f;padding:0}.step-card h2{font-weight:700;font-size:17px;margin:16px 0 8px;letter-spacing:-.02em}.step-card>p{font-size:12px;color:#77756d;line-height:1.55;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;min-height:55px}.tag-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:14px}.tag-row span,.editable-tags span{font-size:10px;background:#f2f0ea;color:#706e66;padding:4px 7px;border-radius:5px}.step-card footer{border-top:1px solid #eeece6;margin-top:17px;padding-top:12px;display:flex;justify-content:space-between;align-items:center;font-size:10px;color:#79776f}.step-card footer span{display:flex;align-items:center;gap:5px}.step-card footer .muted{color:#aaa89f}.step-card footer select{border:0;background:transparent;color:#89877f;font-size:10px;max-width:110px}.kanban{display:grid;grid-template-columns:repeat(4,minmax(230px,1fr));gap:14px;align-items:start;overflow-x:auto;padding-bottom:20px}.column{background:#efeee8;border:1px solid #e3e1d9;border-radius:13px;padding:13px;min-height:470px}.column>header{display:flex;align-items:center;justify-content:space-between;padding:2px 3px}.column>header div{display:flex;align-items:center;gap:8px}.column>header h2{font-weight:700;font-size:13px;margin:0}.column>header span{background:#dfddd5;border-radius:20px;padding:3px 8px;font-size:10px;color:#747169}.column>p{font-size:10px;color:#96948c;margin:5px 0 15px 19px}.column-cards{display:grid;gap:9px}.column-cards>div{position:relative}.column-cards .step-card{padding:14px}.column-cards .step-card h2{margin:12px 0 5px;font-size:14px}.column-cards .grip{position:absolute;right:11px;top:14px;color:#bbb9b1;z-index:2}.compact .more{display:none}.compact footer{margin-top:12px}.empty{text-align:center;padding:80px 20px;color:var(--muted)}.empty>div{margin:auto;width:48px;height:48px;background:#ebe9e1;color:#8e8b82;border-radius:50%;display:grid;place-items:center}.empty h2{font-weight:700;font-size:19px;color:var(--ink);margin:17px 0 7px}.empty p{font-size:13px;max-width:430px;margin:auto;line-height:1.6}.modal-layer{position:fixed;inset:0;background:#25241f99;backdrop-filter:blur(3px);display:grid;place-items:center;padding:25px;z-index:50}.editor{background:#fff;width:min(760px,100%);max-height:92vh;display:flex;flex-direction:column;border-radius:17px;box-shadow:0 30px 80px #0003;overflow:hidden}.editor>header{padding:22px 27px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between}.editor>header span{font-size:9px;color:var(--accent);font-weight:700;letter-spacing:.15em}.editor>header h2{font-weight:700;font-size:19px;margin:5px 0 0}.editor-body{padding:25px 27px;overflow-y:auto;display:grid;gap:20px}.editor label{display:grid;gap:7px;font-size:11px;font-weight:700;color:#56544e}.editor label small{font-weight:400;color:#999;margin-left:4px}.editor input,.editor textarea,.editor select{border:1px solid #dcd9d0;border-radius:8px;padding:10px 11px;outline:0;background:#fdfdfb;color:var(--ink);font-size:13px}.editor input:focus,.editor textarea:focus,.editor select:focus{border-color:#e68a73;box-shadow:0 0 0 3px #ec6b4d13}.editor textarea{resize:vertical;line-height:1.5}.form-row{display:grid;grid-template-columns:1fr 2fr;gap:16px}.input-action{display:flex;gap:7px}.input-action input{flex:1;min-width:0}.input-action button{border:1px solid #d8d5cc;background:#f4f2ed;border-radius:8px;padding:0 12px;font-size:11px;font-weight:700;display:flex;align-items:center;gap:5px}.editable-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:-12px}.editable-tags span{display:flex;align-items:center;gap:5px}.editable-tags button{border:0;background:none;padding:0;display:grid}.video-edit{position:relative}.video-frame{background:#1d1d1a;border-radius:9px;overflow:hidden;aspect-ratio:16/9}.video-frame iframe,.video-frame video{border:0;width:100%;height:100%;display:block}.remove-video{position:absolute;right:8px;top:8px;border:0;background:#272622db;color:#fff;padding:6px 9px;border-radius:6px;display:flex;gap:5px;font-size:10px}.editor>footer{border-top:1px solid var(--line);padding:16px 27px;display:flex;justify-content:space-between}.editor>footer>div{display:flex;gap:8px}.secondary,.danger{border:1px solid #d9d6ce;background:#fff;border-radius:8px;padding:9px 13px;font-size:12px;font-weight:600}.danger{color:#b94836;display:flex;align-items:center;gap:6px}.review-wrap{max-width:720px;margin:0 auto}.review-progress{font-size:10px;color:#85837b;margin-bottom:12px}.review-progress>div{height:3px;background:#e5e2da;margin-top:8px;border-radius:3px}.review-progress i{display:block;height:100%;background:var(--accent);border-radius:3px}.review-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:0 8px 30px #312f2810}.review-main{text-align:center;padding:48px 20px}.review-main small{font-size:9px;letter-spacing:.14em;color:#9b9991;font-weight:700}.review-main h2{font-weight:700;font-size:29px;margin:15px 0}.review-main .tag-row{justify-content:center}.reveal{width:100%;border:0;background:#2d2c27;color:#fff;padding:13px;border-radius:9px;font-size:12px;font-weight:700}.answer{border-top:1px solid var(--line);padding-top:20px}.answer>p{font-size:14px;line-height:1.65;white-space:pre-wrap}.answer .video-frame{margin-top:15px}.ratings{text-align:center}.ratings>p{font-size:11px;color:#77756e}.ratings>div{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.ratings button{background:#fff;border:1px solid var(--line);padding:10px 5px;border-radius:8px}.ratings b,.ratings span{display:block}.ratings b{font-size:11px}.ratings span{font-size:9px;color:#999;margin-top:4px}.ratings button:hover{border-color:var(--accent)}.toast{position:fixed;bottom:22px;left:50%;transform:translate(-50%);background:#292823;color:#fff;padding:10px 15px;border-radius:9px;box-shadow:0 8px 28px #0003;z-index:80;display:flex;align-items:center;gap:8px;font-size:12px}@media (max-width:900px){.sidebar{transform:translate(-100%);transition:.2s}.sidebar.open{transform:none;box-shadow:15px 0 40px #0004}.close-sidebar{display:block;position:absolute;right:8px;top:8px;color:#aaa}.scrim{display:block;position:fixed;inset:0;background:#0005;z-index:15}main{margin-left:0}.menu-button{display:grid!important}.content{padding:34px 22px}main>header{padding:0 22px}.kanban{grid-template-columns:repeat(4,260px)}}@media (max-width:600px){main>header{height:65px;padding:0 14px;gap:9px}.search input{font-size:11px}.primary{padding:10px}.primary:not(.editor .primary){font-size:0}.content{padding:28px 14px}.page-title h1{font-size:25px}.cards-grid{grid-template-columns:1fr}.modal-layer{padding:0;align-items:end}.editor{max-height:95vh;border-radius:17px 17px 0 0}.editor-body{padding:20px}.editor>header,.editor>footer{padding:16px 20px}.form-row{grid-template-columns:1fr}.ratings>div{grid-template-columns:1fr 1fr}.review-main{padding:40px 10px}.review-main h2{font-size:25px}}.file-upload{border:1px dashed #cbc7bc;border-radius:9px;padding:13px!important;display:flex!important;align-items:center;justify-content:center;gap:8px;background:#faf9f6;color:#706e66!important;cursor:pointer}.file-upload:hover{border-color:var(--accent);color:var(--accent)!important}.file-upload input{display:none}.field-error,.error-banner{color:#a43b2b;background:#fff0ed;border:1px solid #f1c5bc;border-radius:8px;padding:9px 12px;font-size:12px}.error-banner{margin-bottom:20px}.loading{padding:80px;text-align:center;color:var(--muted);font-size:13px}.primary:disabled{opacity:.55;cursor:not-allowed}.sidebar-foot{display:grid;gap:8px}.sidebar-foot button{border:0;background:transparent;color:#aaa9a0;padding:4px 0;display:flex;align-items:center;gap:6px;font-size:10px}.sidebar-foot button:hover{color:#fff}.auth-screen{margin:0;min-height:100vh;width:100%;display:grid;place-items:center;background:radial-gradient(circle at 50% 10%,#fff 0,#f7f6f1 46%,#eeece4);padding:24px}.auth-loading{color:var(--muted);font-size:13px}.login-card{width:min(400px,100%);background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:0 22px 60px #34322b18;display:grid;gap:17px}.login-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}.login-brand strong{display:block;font-size:20px}.login-brand span{display:block;color:#999;font-size:10px;letter-spacing:.08em}.login-icon{width:45px;height:45px;border-radius:50%;background:#f8e7e2;color:var(--accent);display:grid;place-items:center}.login-card h1{font-size:25px;margin:-5px 0 -12px}.login-card>p{margin:0 0 7px;color:var(--muted);font-size:13px}.login-card label{display:grid;gap:7px;font-size:11px;font-weight:700;color:#55534d}.login-card input{border:1px solid #dcd9d0;border-radius:9px;padding:11px;outline:0}.login-card input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #ec6b4d16}.login-card .primary{justify-content:center;padding:12px}.login-error{background:#fff0ed;border:1px solid #f1c5bc;color:#a43b2b;border-radius:8px;padding:10px;font-size:11px}