:root{--blue:#2864f0;--hover:#285ac8;--dark:#1e46aa;--pale:#ebf3ff;--text:#323232;--body:#595959;--muted:#747474;--border:#e9e7e7;--bg:#f7f8fa;--green:#007e34;--red:#dc1e32;--radius:12px}
*{box-sizing:border-box}body{margin:0;color:var(--body);background:var(--bg);font:14px/1.6 -apple-system,BlinkMacSystemFont,"Helvetica Neue","Hiragino Kaku Gothic ProN",Arial,Meiryo,sans-serif}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}button:focus-visible,a:focus-visible{outline:3px solid #73a5ff}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}a{color:var(--blue)}h1,h2,h3,p{margin:0}h1{font-size:26px;font-weight:600;color:var(--text);letter-spacing:-.02em}h2{font-size:18px;color:var(--text);font-weight:600}h3{font-size:16px;color:var(--text)}small,.muted{color:var(--muted)}small{font-size:12px}button{transition:background .2s}svg{width:20px;height:20px;flex-shrink:0;vertical-align:middle}ul{padding-left:20px}li{margin:8px 0}.sidebar{position:fixed;inset:0 auto 0 0;width:236px;background:#fff;border-right:1px solid var(--border);padding:32px 16px 20px;display:flex;flex-direction:column;z-index:20}.brand{padding:0 16px 28px;color:var(--text)}.wordmark{font-size:25px;letter-spacing:.08em;font-weight:800;color:var(--blue)}.brand small{letter-spacing:.14em;font-size:10px}.nav-caption{padding:12px 16px 8px;font-size:11px;color:var(--muted);letter-spacing:.06em}.nav{display:grid;gap:5px}.nav a{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--body);padding:12px 14px;border-radius:8px;font-size:13px}.nav a:hover{background:#f7f8fa}.nav a.active{color:var(--blue);background:var(--pale);font-weight:600}.nav .end{margin-left:auto;width:14px}.sidebar-bottom{margin-top:auto;padding:20px 12px 0}.side-help{padding:16px;background:#f7f8fa;border-radius:10px;margin-bottom:20px;font-size:12px}.side-help strong{color:var(--text);display:block;margin-bottom:6px}.user{display:flex;align-items:center;gap:10px}.avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--pale);color:var(--dark);font-size:12px;font-weight:600}.user small{display:block}.layout{margin-left:236px}.topbar{height:72px;background:white;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 40px;gap:12px}.topbar .crumb{font-size:12px}.top-actions{display:flex;align-items:center;gap:16px}.badge{font-size:11px;line-height:1.6;padding:3px 9px;border-radius:6px;background:#f1f2f4;color:#666;display:inline-flex;align-items:center;gap:4px;white-space:nowrap}.badge.blue{background:var(--pale);color:var(--dark)}.badge.green{background:#eaf7ef;color:var(--green)}.badge.orange{background:#fff4df;color:#855600}.demo-select{font-size:12px;padding:7px 10px;border:1px solid var(--border);border-radius:6px;background:white;color:var(--body)}main{max-width:1240px;margin:auto;padding:36px 40px 60px}.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px;gap:16px}.page-head p{margin-top:7px;color:var(--muted);font-size:13px}.eyebrow{font-size:11px;color:var(--blue);font-weight:700;letter-spacing:.1em;margin-bottom:8px}.btn{border:1px solid #d5dbe5;background:white;color:var(--body);border-radius:99px;padding:10px 20px;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:500;font-size:13px;min-height:42px}.btn:hover{background:#f4f6fa}.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}.btn.primary:hover{background:var(--hover)}.btn.text{border:0;background:none;padding:6px 0;color:var(--blue)}.btn.small{font-size:12px;padding:7px 14px;min-height:36px}.panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px}.progress-panel{display:flex;align-items:center;gap:24px;margin-bottom:28px}.progress-ring{--pct:0%;width:72px;height:72px;border-radius:50%;background:conic-gradient(var(--blue) var(--pct),#e9eef7 0);display:grid;place-items:center;flex-shrink:0}.progress-ring span{width:58px;height:58px;border-radius:50%;background:white;display:grid;place-items:center;font-size:18px;font-weight:600;color:var(--text)}.grow{flex:1}.progress-title{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}.bar{height:5px;background:#e9eef7;border-radius:10px;overflow:hidden;margin-top:12px}.bar>span{display:block;height:100%;background:var(--blue)}.next-card{display:flex;align-items:center;gap:24px;background:var(--pale);border:1px solid #dce8ff;border-radius:12px;padding:24px 28px;margin-bottom:32px}.next-icon{width:60px;height:60px;border-radius:16px;background:white;color:var(--blue);display:grid;place-items:center;flex-shrink:0}.next-icon svg{width:26px;height:26px}.section-head{display:flex;align-items:center;justify-content:space-between;margin:28px 0 16px;gap:12px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.course{padding:0;overflow:hidden;display:flex;flex-direction:column}.course-top{height:94px;background:#f0f5ff;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;color:var(--blue)}.course-top svg{height:32px;width:32px}.course-number{font-size:36px;font-weight:300;opacity:.65;letter-spacing:-.04em}.course.locked .course-top{background:#f1f3f6;color:#8b95a5}.course-body{padding:20px 24px;flex:1;display:flex;flex-direction:column}.course-body h3{margin:10px 0 8px;font-size:15px}.course-body p{font-size:12px;min-height:40px;color:var(--muted);margin-bottom:18px}.course-footer{display:flex;justify-content:space-between;align-items:center;margin-top:auto;border-top:1px solid var(--border);padding-top:14px}.course-footer small{font-size:11px}.course-footer .btn{padding:5px 0}.note{display:flex;gap:10px;align-items:flex-start;font-size:12px;color:var(--muted);margin-top:24px}.note svg{width:16px;height:16px;margin-top:2px}.demo-footer{margin-top:36px;border-top:1px solid var(--border);padding-top:16px;display:flex;justify-content:space-between;gap:12px;font-size:11px;color:var(--muted)}.demo-footer button{border:0;background:none;color:var(--muted);text-decoration:underline;font-size:11px}.back{display:inline-block;text-decoration:none;font-size:12px;margin-bottom:22px}.split{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px}.stack{display:grid;gap:20px;align-content:start}.video{background:#edf3ff;border:1px solid #dce8ff;border-radius:12px;min-height:250px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:28px;color:var(--dark);gap:12px}.play{height:56px;width:56px;border:0;border-radius:50%;background:white;color:var(--blue);display:grid;place-items:center;box-shadow:0 3px 12px #1e46aa12}.video small{color:#526c99}.video h3{color:var(--dark)}.panel p+p{margin-top:12px}.steps{padding:0;list-style:none}.steps li{display:flex;gap:12px;font-size:13px;padding:10px 0}.steps b{color:var(--blue);font-size:12px;min-width:30px}.question{margin:16px 0;font-weight:600;color:var(--text)}.choice{display:flex;gap:10px;border:1px solid var(--border);border-radius:8px;padding:12px;margin:8px 0;cursor:pointer;font-size:13px}.choice:has(input:checked){border-color:var(--blue);background:var(--pale)}input[type=radio]{accent-color:var(--blue)}.feedback{padding:12px 16px;border-radius:8px;background:#fff1f1;color:#a7192a;margin:16px 0;font-size:13px}.feedback.success{background:#eaf7ef;color:var(--green)}.field{display:grid;gap:6px;margin:16px 0;font-size:13px}.field input,.field textarea,.field select,.search{border:1px solid #ccc;border-radius:4px;padding:10px 12px;background:white;color:var(--text);width:100%}.field textarea{min-height:110px;resize:vertical}.tabs{display:flex;gap:8px;border-bottom:1px solid var(--border);margin-bottom:24px}.tabs button{padding:12px 18px;background:transparent;border:0;border-bottom:2px solid transparent;color:var(--body)}.tabs button.selected{color:var(--blue);border-bottom-color:var(--blue)}.week-card{display:block;text-decoration:none;color:inherit;padding:22px}.week-card:hover{border-color:#aac8ff}.week-card small{color:var(--blue);font-weight:600}.week-card h3{margin:10px 0}.week-card p{font-size:12px;color:var(--muted)}.empty{text-align:center;padding:60px 28px}.empty>svg{width:40px;height:40px;color:var(--blue);margin-bottom:16px}.empty p{margin:12px auto 24px;max-width:480px}.toolbar{display:flex;justify-content:space-between;gap:16px;margin-bottom:20px}.search{max-width:320px}.table-wrap{overflow:auto;padding:0}table{border-collapse:collapse;width:100%;white-space:nowrap}th,td{text-align:left;padding:18px 22px;border-bottom:1px solid var(--border);font-size:13px}th{background:#fafbfc;font-size:11px;color:var(--muted);font-weight:500}tr:last-child td{border-bottom:0}td a{text-decoration:none;font-weight:600}.inline{display:flex;align-items:center;gap:12px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}.stats .panel{padding:18px 22px}.stats strong{display:block;color:var(--text);font-size:22px;margin-top:6px}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.pill{padding:4px 10px;border-radius:30px;background:var(--pale);font-size:11px;color:var(--dark)}details{background:#fff;border:1px solid var(--border);border-radius:10px;margin-bottom:12px;padding:18px 22px}summary{font-weight:500;color:var(--text);cursor:pointer}details p{margin-top:16px;font-size:13px}.saved-note{border-top:1px solid var(--border);padding:16px 0}.saved-note p{white-space:pre-wrap;margin-top:8px}.modal-wrap{position:fixed;inset:0;background:#16244966;z-index:50;display:grid;place-items:center;padding:24px}.modal{background:white;border-radius:16px;width:480px;max-width:100%;padding:28px;max-height:90vh;overflow:auto}.modal-head{display:flex;justify-content:space-between;align-items:center}.close{border:0;background:#f4f5f7;border-radius:50%;width:32px;height:32px;font-size:20px}.actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:12px 20px;border-radius:8px;background:#243b61;color:white;z-index:100;box-shadow:0 4px 20px #0002;opacity:0;pointer-events:none;transition:opacity .2s}#toast.show{opacity:1}.mobile-menu{display:none;border:0;background:none;color:var(--text)}.compact p{font-size:13px}.compact h3{margin-bottom:12px}.read-label{color:var(--blue);font-size:12px}.content-body{white-space:pre-line}
@media(min-width:1500px){main{padding-top:44px}}@media(max-width:1100px){.sidebar{width:208px}.layout{margin-left:208px}main{padding:28px 24px}.topbar{padding:0 24px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:1fr}.split>aside{display:none}}@media(max-width:760px){.sidebar{transform:translateX(-100%);transition:transform .2s;width:236px;box-shadow:8px 0 30px #0001}.sidebar.open{transform:translateX(0)}.layout{margin-left:0}.mobile-menu{display:block}.topbar{height:62px;padding:0 16px}.topbar .crumb{display:none}.top-actions{gap:8px}.top-actions .badge{display:none}main{padding:24px 16px}.page-head{align-items:flex-start}h1{font-size:22px}.grid,.detail-grid{grid-template-columns:1fr}.next-card{padding:20px;flex-wrap:wrap;gap:16px}.next-card .btn{width:100%}.next-icon{display:none}.progress-panel{padding:20px;gap:16px}.progress-title{display:block}.progress-title .badge{margin-top:6px}.stats{gap:8px}.stats .panel{padding:12px}.stats strong{font-size:17px}.toolbar{flex-wrap:wrap}.demo-footer{flex-direction:column}.tabs{overflow:auto;white-space:nowrap}.video{min-height:220px}.panel{padding:20px}.table-wrap{padding:0}}