:root{--bg: #f4f6fa;--bg-deep: #eaeef5;--surface: #ffffff;--card: #ffffff;--input-bg: #f2f5f9;--row-hover: #f7f9fc;--border: #e3e8f0;--border-strong: #cfd7e3;--hairline: rgba(15, 26, 46, .06);--ink: #0c1a33;--ink-2: #13264a;--ink-3: #1c335e;--ink-line: rgba(255, 255, 255, .08);--sidebar-bg: var(--ink);--sidebar-fg: #a7b4cc;--sidebar-fg-active: #ffffff;--sidebar-active: rgba(255, 255, 255, .07);--sidebar-border: var(--ink-line);--text: #0f1a2e;--text-soft: #4b5870;--text-muted: #8592a8;--primary: #1d6ff2;--primary-hover: #155ad0;--primary-soft: #e8f0fe;--primary-ring: rgba(29, 111, 242, .22);--accent: #f5a524;--accent-soft: #fdf1dc;--accent-ink: #8a5a06;--accent-gradient: linear-gradient(135deg, #1d6ff2, #4c8dff);--success: #15803d;--success-bg: #dcf5e4;--warn: #a15c07;--warn-bg: #fdf1dc;--danger: #d0342c;--danger-bg: #fde7e5;--radius: 14px;--radius-sm: 10px;--gutter: 28px;--topbar-h: 64px;--sidebar-w: 264px;--shadow-sm: 0 1px 2px rgba(15, 26, 46, .05);--shadow: 0 1px 2px rgba(15, 26, 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td:first-child{font-family:var(--font);font-weight:800;font-size:16px}.data-list .act-group{justify-content:flex-end}.data-list .act-group .icon-btn{width:40px;height:40px}.pill-text{display:none}.school-pill{padding:4px}}.toolbar-end{margin-left:auto;align-self:flex-end}.print-area{display:none}@media print{@page{size:A4 landscape;margin:12mm}html.printing body>#root{display:none!important}html.printing .print-area{display:block}html.printing,html.printing body{background:#fff!important;color:#000}.print-sheet{break-after:page;font-family:var(--font);color:#0f1a2e}.print-sheet:last-child{break-after:auto}.print-head{display:flex;justify-content:space-between;align-items:flex-end;border-bottom:2px solid #0c1a33;padding-bottom:8px;margin-bottom:10px}.print-kind{font-size:11px;color:#4b5870;font-weight:600}.print-head h1{margin:0;font-size:22px;font-weight:800;letter-spacing:-.02em}.print-meta{text-align:right;display:flex;flex-direction:column;font-size:11px;color:#4b5870}.print-meta 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td.cell-free{background:repeating-linear-gradient(135deg,transparent 0 8px,var(--hairline) 8px 9px)}.grade-table td.cell-none{background:var(--bg)}.grade-table td.drop-on{background:var(--primary-soft);box-shadow:inset 0 0 0 2px var(--primary)}.lesson{position:relative;cursor:grab;height:100%}.lesson:active{cursor:grabbing}.lesson[draggable=false]{cursor:default}.lesson.locked{box-shadow:inset 3px 0 0 var(--tone),0 0 0 1.5px var(--tone)}.lesson-lock{position:absolute;top:6px;right:6px;width:24px;height:24px;display:grid;place-items:center;border:0;border-radius:6px;background:transparent;color:var(--tone);cursor:pointer;opacity:0;transition:opacity .12s ease,background .12s ease}.lesson:hover .lesson-lock,.lesson-lock:focus-visible,.lesson-lock.on{opacity:1}.lesson-lock:hover{background:color-mix(in srgb,var(--tone) 16%,transparent)}.lesson-lock.on{background:var(--tone);color:#fff}.lesson.pending{--tone: var(--text-muted);background:transparent;box-shadow:none;border:1.5px dashed var(--border-strong);cursor:default;color:var(--text-soft);gap:2px}.lesson.pending svg{color:var(--primary)}.lesson.pending span{font-size:11.5px}.lesson.pending .link-btn{align-self:flex-start;padding:2px 0;font-size:12px}.edit-problem{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--warn-bg);color:var(--text);border-radius:var(--radius-sm);padding:10px 14px;margin-bottom:14px;font-size:13.5px;font-weight:600;box-shadow:inset 4px 0 0 var(--warn)}.grade-side{padding:16px;position:sticky;top:calc(var(--topbar-h) + 16px)}.side-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.side-head h2{margin:0;font-size:15px;font-weight:800;letter-spacing:-.01em}.side-empty{color:var(--text-muted);font-size:13.5px;margin:0 0 12px}.side-list{list-style:none;margin:0 0 12px;padding:0;display:flex;flex-direction:column;gap:6px}.subject-chip{--tone: var(--primary);--tone-bg: var(--primary-soft);display:grid;grid-template-columns:10px 1fr auto;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;background:var(--tone-bg);box-shadow:inset 3px 0 0 var(--tone);cursor:grab;-webkit-user-select:none;user-select:none}.subject-chip:active{cursor:grabbing}.subject-chip.tone-0{--tone: #145c4a;--tone-bg: #e3efe9}.subject-chip.tone-1{--tone: #b06a0c;--tone-bg: #fbefd9}.subject-chip.tone-2{--tone: #2f5f8a;--tone-bg: #e3ecf5}.subject-chip.tone-3{--tone: #a3412f;--tone-bg: #f9e5e0}.subject-chip.tone-4{--tone: #6b4f8f;--tone-bg: #ece6f3}.subject-chip.tone-5{--tone: #4d7a1f;--tone-bg: #e9f1dc}.subject-chip.tone-6{--tone: #8a5a3c;--tone-bg: #f2e8df}.subject-chip.tone-7{--tone: #1f7680;--tone-bg: #ddf0f1}:root[data-theme=dark] .subject-chip{background:color-mix(in srgb,var(--tone) 22%,transparent)}:root[data-theme=dark] .subject-chip.tone-0{--tone: #4fbf9a}:root[data-theme=dark] .subject-chip.tone-1{--tone: #f5b54a}:root[data-theme=dark] .subject-chip.tone-2{--tone: #6aa8ff}:root[data-theme=dark] .subject-chip.tone-3{--tone: #ff8a73}:root[data-theme=dark] .subject-chip.tone-4{--tone: #b79cf0}:root[data-theme=dark] .subject-chip.tone-5{--tone: #9ad36a}:root[data-theme=dark] .subject-chip.tone-6{--tone: #d9a27a}:root[data-theme=dark] .subject-chip.tone-7{--tone: #5ed0d9}.chip-grip{width:6px;height:16px;opacity:.45;background-image:radial-gradient(circle,currentColor 1.2px,transparent 1.4px);background-size:6px 5px;color:var(--tone)}.chip-main{display:flex;flex-direction:column;min-width:0}.chip-main strong{font-size:13px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chip-main 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print{.print-logo{max-height:36px;max-width:120px;object-fit:contain;margin-left:auto;margin-bottom:4px}}@media (max-width: 760px){.school-identity,.address-grid{grid-template-columns:1fr}}