:root{--background:#f4f6fa;--surface:#fff;--surface-soft:#eef2f7;--text:#17233a;--muted:#52627a;--border:#d7dfea;--primary:#17233a;--focus:#005fcc;--success:#087e68;--danger:#b42318;--radius-control:12px;--radius-card:20px;--radius-sheet:28px;--shadow-card:0 8px 24px #17233a0f;--color-japanese:#cf4c70;--color-math:#5467d9;--color-english:#168a84;--color-physics:#2c83c5;--color-chemistry:#b86b12;--color-social:#855cc3;--color-information:#597b28}*{box-sizing:border-box}html{background:var(--background);min-width:320px}body{background:var(--background);color:var(--text);margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Hiragino Sans,Yu Gothic,sans-serif;font-size:16px;line-height:1.6}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}:is(button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible){outline:3px solid var(--focus);outline-offset:2px}a{color:inherit}.app-shell{min-height:100vh}.app-topbar{display:none}.app-layout{grid-template-columns:230px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{border-right:1px solid var(--border);background:#fbfcfe;flex-direction:column;padding:28px 18px;display:flex}.brand{align-items:center;gap:11px;padding:4px 10px 26px;text-decoration:none;display:flex}.brand-mark{background:var(--primary);border-radius:13px;width:38px;height:38px;position:relative;overflow:hidden}.brand-mark:before,.brand-mark:after{content:"";opacity:.9;background:#fff;border-radius:50%;position:absolute}.brand-mark:before{width:22px;height:22px;bottom:-5px;left:-6px}.brand-mark:after{background:#d8e9ff;width:17px;height:17px;top:-4px;right:-3px}.brand-copy{line-height:1.15;display:grid}.brand-copy strong{letter-spacing:.02em;font-size:18px}.brand-copy 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var(--border);border-radius:var(--radius-card);background:var(--surface);box-shadow:var(--shadow-card)}.today-card{background:linear-gradient(125deg,#fff 0%,#f6f9fd 100%);justify-content:space-between;gap:18px;min-height:158px;padding:24px;display:flex}.today-card h2{margin:5px 0 7px;font-size:21px}.today-total{letter-spacing:-.06em;font-size:clamp(42px,6vw,64px);font-weight:800;line-height:1}.today-total small{letter-spacing:0;color:var(--muted);margin-left:5px;font-size:17px;font-weight:700}.today-caption{color:var(--muted);margin:9px 0 0;font-size:13px}.today-accent{width:90px;height:90px;color:var(--primary);background:#eaf1fa;border-radius:30px;align-self:center;place-items:center;display:grid}.plan-card{padding:22px}.plan-card h3{margin:0 0 4px;font-size:16px}.plan-card p{color:var(--muted);margin:0 0 14px;font-size:13px}.plan-input-row{align-items:center;gap:8px;display:flex}.number-input{border:1px solid var(--border);width:100%;min-height:44px;color:var(--text);background:#fff;border-radius:10px;padding:0 12px}.number-input.small{max-width:110px}.section-heading{justify-content:space-between;align-items:baseline;gap:16px;margin:0 0 14px;display:flex}.section-heading h2{letter-spacing:-.02em;margin:0;font-size:21px}.section-heading p{color:var(--muted);margin:0;font-size:13px}.subject-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.subject-card{padding:18px;position:relative;overflow:hidden}.subject-card:before{content:"";background:var(--subject-color);height:5px;position:absolute;inset:0 0 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var(--subject-color) 78%, white)}.territory-tile.check{background:color-mix(in srgb, var(--subject-color) 45%, white)}.territory-tile.due{background:repeating-linear-gradient(-45deg, color-mix(in srgb, var(--subject-color) 20%, white), color-mix(in srgb, var(--subject-color) 20%, white) 5px, color-mix(in srgb, var(--subject-color) 33%, white) 5px, color-mix(in srgb, var(--subject-color) 33%, white) 7px)}.territory-label{text-overflow:ellipsis;white-space:nowrap;z-index:1;position:relative;overflow:hidden}.territory-more{border:1px dashed var(--border);min-height:44px;color:var(--muted);background:#fff;border-radius:9px;padding:0 5px;font-size:11px}.territory-more:hover{color:var(--text);border-color:#aab8cb}.subject-actions{gap:8px;display:flex}.subject-actions .button{flex:1;padding-inline:8px;font-size:13px}.empty-subject{text-align:center;border:1px dashed var(--border);border-radius:var(--radius-card);color:var(--muted);background:#ffffff8c;padding:30px}.legend{color:var(--muted);flex-wrap:wrap;gap:15px;margin-top:20px;font-size:12px;display:flex}.legend-item{align-items:center;gap:6px;display:inline-flex}.legend-swatch{border:1px solid var(--border);border-radius:5px;width:20px;height:15px}.legend-swatch.recent{background:#7faed5}.legend-swatch.check{background:#c1d9ec}.legend-swatch.due{background:repeating-linear-gradient(-45deg,#d4e4f1,#d4e4f1 4px,#9ebed7 4px 6px)}.legend-swatch.untouched{background:#fff;border-style:dashed}.recommendation-column{margin-top:30px}.recommendation-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.recommendation-card{flex-direction:column;gap:12px;padding:17px;display:flex}.recommendation-top{justify-content:space-between;align-items:start;gap:8px;display:flex}.recommendation-kind{color:var(--muted);font-size:11px;font-weight:700}.recommendation-card h3{margin:2px 0 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