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red)){.rz-btn--danger:hover{--btn-bg:color-mix(in srgb, var(--danger) 85%, black)}}.rz-btn--soft{--btn-bg:var(--primary-soft);--btn-fg:var(--primary);box-shadow:none}.rz-btn--soft:hover{--btn-bg:var(--primary-soft-2)}.rz-btn--sm{height:30px;padding:0 var(--space-3);font-size:var(--text-caption);border-radius:var(--radius-sm)}.rz-btn--lg{height:46px;padding:0 var(--space-6);font-size:var(--text-body);border-radius:var(--radius-lg)}.rz-btn--pill{border-radius:var(--radius-pill)}.rz-btn--icon{justify-content:center;width:38px;padding:0}.rz-btn--sm.rz-btn--icon{width:30px}.rz-btn--lg.rz-btn--icon{width:46px}.rz-btn .rz-icon{width:16px;height:16px}.rz-field{gap:var(--space-1);display:grid}.rz-label{font-size:var(--text-body-sm);color:var(--text-2);font-weight:500}.rz-input,.rz-select,.rz-textarea{width:100%;height:38px;padding:0 var(--space-3);border:1px solid var(--border-strong);border-radius:var(--radius-md);background:var(--surface);color:var(--text);font:400 var(--text-body)/1.4 var(--font-sans);transition:border-color var(--dur-fast), box-shadow var(--dur-fast)}.rz-textarea{height:auto;padding:var(--space-2) var(--space-3);resize:vertical;min-height:88px}.rz-input::placeholder,.rz-textarea::placeholder{color:var(--text-3)}.rz-input:focus,.rz-select:focus,.rz-textarea:focus{border-color:var(--primary);box-shadow:var(--focus-ring);outline:none}.rz-input[aria-invalid=true]{border-color:var(--danger)}.rz-hint{font-size:var(--text-caption);color:var(--text-3)}.rz-hint--error{color:var(--danger)}.rz-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238e88a0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;padding-right:34px}.rz-search{position:relative}.rz-search .rz-input{border-radius:var(--radius-pill);background:var(--surface-2);border-color:#0000;padding-left:36px}.rz-search .rz-icon{color:var(--text-3);width:16px;height:16px;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.rz-check{align-items:center;gap:var(--space-2);cursor:pointer;font-size:var(--text-body-sm);display:inline-flex}.rz-check input{opacity:0;width:0;height:0;position:absolute}.rz-check__box{border:1.5px solid var(--border-strong);background:var(--surface);width:18px;height:18px;transition:all var(--dur-fast);border-radius:5px;place-items:center;display:grid}.rz-check__box svg{width:14px;height:14px;stroke:var(--on-primary);stroke-width:2.5px;fill:none;stroke-linecap:round;stroke-linejoin:round;opacity:0;transition:all var(--dur-fast) var(--ease);transform:scale(.6)}.rz-check input:checked+.rz-check__box{background:var(--primary);border-color:var(--primary)}.rz-check input:checked+.rz-check__box svg{opacity:1;transform:scale(1)}.rz-check--radio .rz-check__box{border-radius:50%}.rz-check--radio .rz-check__box:after{content:"";background:var(--on-primary);width:8px;height:8px;transition:transform var(--dur-fast);border-radius:50%;transform:scale(0)}.rz-check--radio input:checked+.rz-check__box:after{transform:scale(1)}.rz-check input:focus-visible+.rz-check__box{box-shadow:var(--focus-ring)}:is(.rz-check:has(input:disabled),.rz-switch:has(input:disabled)){opacity:.45;pointer-events:none}.rz-switch{cursor:pointer;width:40px;height:22px;display:inline-block;position:relative}.rz-switch input{opacity:0;width:0;height:0;position:absolute}.rz-switch__track{border-radius:var(--radius-pill);background:var(--border-strong);transition:background var(--dur-fast);position:absolute;inset:0}.rz-switch__track:after{content:"";width:16px;height:16px;transition:transform var(--dur-fast) var(--ease);background:#fff;border-radius:50%;position:absolute;top:3px;left:3px;box-shadow:0 1px 2px #00000040}.rz-switch input:checked+.rz-switch__track{background:var(--primary)}.rz-switch input:checked+.rz-switch__track:after{transform:translate(18px)}.rz-chip{border-radius:var(--radius-pill);border:1px solid var(--border);background:var(--surface);height:28px;font-size:var(--text-body-sm);color:var(--text-2);cursor:pointer;white-space:nowrap;align-items:center;gap:6px;padding:0 12px;display:inline-flex}.rz-chip:hover{border-color:var(--border-strong)}.rz-chip[aria-pressed=true],.rz-chip--active{background:var(--primary-soft);border-color:var(--primary-soft-2);color:var(--primary);font-weight:500}.rz-chip--subject{--accent:var(--primary);background:var(--accent);border-color:#0000}@supports (color:color-mix(in lab, red, red)){.rz-chip--subject{background:color-mix(in srgb, var(--accent) 12%, var(--surface))}}.rz-chip--subject{color:var(--accent)}.rz-badge{--badge:var(--text-3);--badge-soft:var(--surface-2);border-radius:var(--radius-pill);background:var(--badge-soft);height:22px;color:var(--badge);font-size:var(--text-caption);letter-spacing:.01em;white-space:nowrap;align-items:center;gap:4px;padding:0 8px;font-weight:600;display:inline-flex}.rz-badge--success{--badge:var(--success-ink);--badge-soft:var(--success-soft)}.rz-badge--warning{--badge:var(--warning-ink);--badge-soft:var(--warning-soft)}.rz-badge--danger{--badge:var(--danger-ink);--badge-soft:var(--danger-soft)}.rz-badge--info{--badge:var(--info-ink);--badge-soft:var(--info-soft)}.rz-badge--primary{--badge:var(--primary);--badge-soft:var(--primary-soft)}.rz-badge--easy{--badge:var(--sage-ink);--badge-soft:var(--sage-soft)}.rz-badge--mid{--badge:var(--mustard-ink);--badge-soft:var(--mustard-soft)}.rz-badge--hard{--badge:var(--terracotta-ink);--badge-soft:var(--terracotta-soft)}.rz-badge__dot{background:currentColor;border-radius:50%;width:6px;height:6px}.rz-status{font-size:var(--text-body-sm);color:var(--text-2);align-items:center;gap:6px;display:inline-flex}.rz-status:before{content:"";background:var(--status-todo);width:9px;height:9px;box-shadow:0 0 0 3px var(--status-todo);border-radius:50%}@supports (color:color-mix(in lab, red, red)){.rz-status:before{box-shadow:0 0 0 3px color-mix(in srgb, var(--status-todo) 22%, transparent)}}.rz-status--progress:before{background:var(--status-progress);box-shadow:0 0 0 3px var(--status-progress)}@supports (color:color-mix(in lab, red, red)){.rz-status--progress:before{box-shadow:0 0 0 3px color-mix(in srgb, var(--status-progress) 22%, transparent)}}.rz-status--done:before{background:var(--status-done);box-shadow:0 0 0 3px var(--status-done)}@supports (color:color-mix(in lab, red, red)){.rz-status--done:before{box-shadow:0 0 0 3px color-mix(in srgb, var(--status-done) 22%, transparent)}}.rz-status--review:before{background:var(--status-review);box-shadow:0 0 0 3px var(--status-review)}@supports (color:color-mix(in lab, red, red)){.rz-status--review:before{box-shadow:0 0 0 3px color-mix(in srgb, var(--status-review) 22%, transparent)}}.rz-tabs{border-bottom:1px solid var(--border);gap:2px;display:flex}.rz-tab{border-radius:var(--radius-md) var(--radius-md) 0 0;font-size:var(--text-body-sm);color:var(--text-2);cursor:pointer;background:0 0;border:1px solid #0000;border-bottom:none;margin-bottom:-1px;padding:10px 14px 9px;font-weight:500}.rz-tab:hover{color:var(--text)}.rz-tab[aria-selected=true]{background:var(--surface);border-color:var(--border);color:var(--primary)}.rz-tabs--pill{background:var(--surface-2);border-radius:var(--radius-pill);border:none;gap:4px;width:max-content;padding:4px}.rz-tabs--pill .rz-tab{border-radius:var(--radius-pill);border:none;margin:0;padding:7px 14px}.rz-tabs--pill .rz-tab[aria-selected=true]{background:var(--text);color:var(--bg)}.rz-card{--accent:var(--primary);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-5);box-shadow:var(--shadow-paper);position:relative}.rz-card--flat{box-shadow:none}.rz-card--tint{background:var(--accent)}@supports (color:color-mix(in lab, red, red)){.rz-card--tint{background:color-mix(in srgb, var(--accent) 9%, var(--surface))}}.rz-card--tint{border-color:var(--accent)}@supports (color:color-mix(in lab, red, red)){.rz-card--tint{border-color:color-mix(in srgb, var(--accent) 18%, var(--border))}}.rz-card--lavender{background:var(--surface-tint)}.rz-card--raised{box-shadow:var(--shadow-raised)}.rz-card--hover:hover{box-shadow:var(--shadow-raised);transition:all var(--dur) var(--ease);transform:translateY(-1px)}.rz-card--spine{overflow:visible}.rz-card--spine:before{content:"";background:var(--accent);opacity:.85;clip-path:polygon(0 0,100% 0,96% 100%,4% 100%);border-radius:2px 2px 3px 3px;width:34px;height:14px;position:absolute;top:-6px;left:22px;transform:rotate(-3deg)}.rz-card--spine .rz-card__title{background:linear-gradient(transparent 62%, var(--accent) 62%, var(--accent) 92%, transparent 92%)}@supports (color:color-mix(in lab, red, red)){.rz-card--spine .rz-card__title{background:linear-gradient(transparent 62%, color-mix(in srgb, var(--accent) 22%, transparent) 62%, color-mix(in srgb, var(--accent) 22%, transparent) 92%, transparent 92%)}}.rz-card--spine .rz-card__title{-webkit-box-decoration-break:clone;box-decoration-break:clone;margin-left:-3px;padding:0 3px;display:inline}.rz-card__head{justify-content:space-between;align-items:flex-start;gap:var(--space-3);margin-bottom:var(--space-3);display:flex}.rz-card__title{font-family:var(--font-display);font-size:var(--text-h3);font-weight:600;line-height:1.25}.rz-card__sub{color:var(--text-2);font-size:var(--text-body-sm);margin-top:2px}.rz-card__foot{justify-content:space-between;align-items:center;gap:var(--space-3);margin-top:var(--space-4);display:flex}.rz-card--sm{padding:var(--space-4);border-radius:var(--radius-lg)}.rz-meta{gap:var(--space-3);font-size:var(--text-caption);color:var(--text-3);flex-wrap:wrap;display:flex}.rz-meta>span{align-items:center;gap:4px;display:inline-flex}.rz-rail{width:var(--rail-w);padding:var(--space-3) var(--space-2);align-items:center;gap:var(--space-1);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-paper);flex-direction:column;display:flex}.rz-rail__item{border-radius:var(--radius-md);width:44px;height:44px;color:var(--text-2);cursor:pointer;transition:all var(--dur-fast);place-items:center;display:grid;position:relative}.rz-rail__item:hover{background:var(--surface-2);color:var(--text)}.rz-rail__item[aria-current=page]{background:var(--text);color:var(--bg)}.rz-rail__item[aria-current=page]:before{content:"";background:var(--primary);border-radius:2px;width:3px;position:absolute;top:12px;bottom:12px;left:-9px}.rz-rail__sep{flex:1}.rz-rail__dot{background:var(--terracotta);width:7px;height:7px;box-shadow:0 0 0 2px var(--surface);border-radius:50%;position:absolute;top:8px;right:8px}.rz-rail--open{width:var(--rail-w-open);align-items:stretch}.rz-rail--open .rz-rail__item{width:auto;font-size:var(--text-body-sm);grid-template-columns:20px 1fr;justify-content:flex-start;gap:12px;padding:0 12px;font-weight:500}.rz-topnav{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-pill);box-shadow:var(--shadow-paper);align-items:center;gap:2px;padding:4px;display:inline-flex}.rz-topnav__item{border-radius:var(--radius-pill);font-size:var(--text-body-sm);color:var(--text-2);cursor:pointer;padding:8px 16px;font-weight:500}.rz-topnav__item:hover{color:var(--text);background:var(--surface-2)}.rz-topnav__item[aria-current=page]{background:var(--text);color:var(--bg)}.rz-bottomnav{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl) var(--radius-xl) 0 0;justify-content:space-around;padding:8px 6px 10px;display:flex}.rz-bottomnav__item{color:var(--text-3);border-radius:var(--radius-md);justify-items:center;gap:2px;padding:4px 10px;font-size:10.5px;font-weight:500;display:grid}.rz-bottomnav__item[aria-current=page]{color:var(--primary);background:var(--primary-soft)}.rz-crumbs{font-size:var(--text-body-sm);color:var(--text-3);flex-wrap:wrap;align-items:center;gap:6px;display:flex}.rz-crumbs a{color:var(--text-2)}.rz-crumbs__sep{opacity:.6}.rz-theme-toggle{background:var(--surface-2);border-radius:var(--radius-pill);grid-auto-flow:column;gap:2px;padding:3px;display:inline-grid}.rz-theme-toggle button{width:30px;height:30px;color:var(--text-3);cursor:pointer;background:0 0;border:none;border-radius:50%;place-items:center;display:grid}.rz-theme-toggle button[aria-pressed=true]{background:var(--surface);color:var(--text);box-shadow:var(--shadow-paper)}.rz-theme-toggle--vertical{grid-auto-flow:row}.rz-notebook-list{margin:0;padding:0 0 0 30px;list-style:none;position:relative}.rz-notebook-list:before{content:"";background:var(--notebook-margin);width:1px;position:absolute;top:-8px;bottom:-8px;left:22px}.rz-notebook-list li{min-height:var(--notebook-pitch);border-bottom:1px solid var(--notebook-line);font-size:var(--text-body-sm);align-items:center;gap:10px;padding:4px 8px 4px 6px;display:flex}.rz-notebook-list li .rz-icon{width:16px;height:16px}.rz-notebook-list .is-done{color:var(--success)}.rz-notebook-list .is-done+span{color:var(--text-2)}.rz-notebook-list .is-todo{color:var(--status-todo)}.rz-notebook{background-color:var(--surface);background-image:repeating-linear-gradient(to bottom, transparent 0, transparent calc(var(--notebook-pitch) - 1px), var(--notebook-line) calc(var(--notebook-pitch) - 1px), var(--notebook-line) var(--notebook-pitch));line-height:var(--notebook-pitch);border:1px solid var(--border);border-radius:var(--radius-lg);padding:6px var(--space-5) 6px 44px;background-position:0 6px;position:relative}.rz-notebook:before{content:"";background:var(--notebook-margin);width:1px;position:absolute;top:0;bottom:0;left:32px}.rz-notebook--grid{background-image:linear-gradient(var(--notebook-grid) 1px, transparent 1px), linear-gradient(90deg, var(--notebook-grid) 1px, transparent 1px);padding-left:var(--space-5);line-height:var(--leading-body);background-size:20px 20px}.rz-notebook--grid:before{display:none}.rz-sticker{--sticker-bg:var(--sticker);background:var(--sticker-bg);color:var(--sticker-ink);padding:var(--space-4) var(--space-5);box-shadow:var(--shadow-sticker);font-family:var(--font-hand);border-radius:3px;font-size:20px;line-height:1.25;position:relative;transform:rotate(-1.2deg)}.rz-sticker--pink{--sticker-bg:var(--sticker-2)}.rz-sticker--blue{--sticker-bg:var(--sticker-3)}.rz-sticker--straight{transform:none}.rz-sticker--r{transform:rotate(1deg)}.rz-sticker:before{content:"";background:#ffffff73;border:1px solid #0000000d;width:56px;height:16px;margin-left:-28px;position:absolute;top:-8px;left:50%;transform:rotate(-2deg)}.rz-sticker__title{font-family:var(--font-sans);font-size:var(--text-overline);letter-spacing:.08em;text-transform:uppercase;opacity:.7;margin-bottom:4px;font-weight:600}.rz-board{background:radial-gradient(120% 90% at 20% 0%, var(--board) 0%, var(--board) 45%, var(--board-2) 100%)}@supports (color:color-mix(in lab, red, red)){.rz-board{background:radial-gradient(120% 90% at 20% 0%, color-mix(in srgb, var(--board) 80%, white 6%) 0%, var(--board) 45%, var(--board-2) 100%)}}.rz-board{color:var(--chalk);border-radius:var(--radius-lg);padding:var(--space-5) var(--space-6);box-shadow:inset 0 0 40px #00000040, var(--shadow-paper);border:6px solid #c9a97a;position:relative}[data-theme=dark] .rz-board{border-color:#6b5637}.rz-board h3,.rz-board h4{color:var(--chalk);font-family:var(--font-display)}.rz-board .rz-formula{color:var(--chalk-accent)}.rz-board .rz-muted{color:var(--chalk-2)}.rz-board__title{font-family:var(--font-hand);color:var(--chalk);margin-bottom:var(--space-2);font-size:26px}.rz-board ul{margin:0;padding-left:20px}.rz-board li{margin:4px 0}.rz-board code{color:var(--chalk);background:#ffffff1a}.rz-board .rz-formula--block{border-top:1px dashed var(--board-line);border-bottom:1px dashed var(--board-line);margin:var(--space-3) 0}.rz-diary{border-collapse:collapse;width:100%;font-size:var(--text-body-sm);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}.rz-diary th,.rz-diary td{border-bottom:1px solid var(--notebook-line);text-align:left;vertical-align:middle;padding:9px 12px}.rz-diary th{font-size:var(--text-overline);letter-spacing:.06em;text-transform:uppercase;color:var(--text-3);background:var(--surface-2);font-weight:600}.rz-diary td:first-child{border-right:1px solid var(--notebook-margin);width:160px;font-weight:500}.rz-diary tr:last-child td{border-bottom:none}.rz-grade{width:28px;height:28px;font-family:var(--font-hand);color:var(--terracotta-ink);background:var(--terracotta-soft);border-radius:6px;place-items:center;font-size:20px;font-weight:700;display:inline-grid;transform:rotate(-4deg)}.rz-grade--5{color:var(--success-ink);background:var(--success-soft)}.rz-grade--4{color:var(--sage-ink);background:var(--sage-soft)}.rz-grade--3{color:var(--mustard-ink);background:var(--mustard-soft)}.rz-stamp{border:2px solid var(--success);color:var(--success);font:700 var(--text-caption)/1.3 var(--font-sans);letter-spacing:.1em;text-transform:uppercase;opacity:.85;border-radius:6px;padding:3px 10px;display:inline-block;transform:rotate(-6deg)}.rz-stamp--warn{border-color:var(--warning);color:var(--warning)}.rz-callout{--c:var(--callout-rule);--c-soft:var(--callout-rule-soft);gap:var(--space-3);padding:var(--space-5) var(--space-5) var(--space-4) var(--space-4);background:var(--c-soft);border:1.5px solid var(--c);grid-template-columns:36px 1fr;display:grid;position:relative}@supports (color:color-mix(in lab, red, red)){.rz-callout{border:1.5px solid color-mix(in srgb, var(--c) 55%, transparent)}}.rz-callout{border-radius:var(--sketch-radius);margin:calc(var(--space-5) + 8px) 0 var(--space-5)}.rz-callout:after{content:"";pointer-events:none;border:1px solid var(--c);position:absolute;inset:-3px -2px -2px -3px}@supports (color:color-mix(in lab, red, red)){.rz-callout:after{border:1px solid color-mix(in srgb, var(--c) 30%, transparent)}}.rz-callout:after{border-radius:15px 225px 15px 255px/255px 15px 225px;transform:rotate(.25deg)}.rz-callout__icon{background:var(--surface);width:36px;height:36px;color:var(--c);box-shadow:0 0 0 1.5px var(--c);border-radius:50% 48% 52% 50%/52% 50% 50% 48%;place-items:center;display:grid}@supports (color:color-mix(in lab, red, red)){.rz-callout__icon{box-shadow:0 0 0 1.5px color-mix(in srgb, var(--c) 50%, transparent)}}.rz-callout__icon{transform:rotate(-4deg)}.rz-callout__kind{z-index:1;font-size:var(--text-overline);letter-spacing:.08em;text-transform:uppercase;color:var(--c);background:var(--surface);box-shadow:0 0 0 1.5px var(--c), var(--shadow-sticker);border-radius:3px;padding:3px 9px;font-weight:700;position:absolute;top:-11px;left:18px}@supports (color:color-mix(in lab, red, red)){.rz-callout__kind{box-shadow:0 0 0 1.5px color-mix(in srgb, var(--c) 50%, transparent), var(--shadow-sticker)}}.rz-callout__kind{transform:rotate(-1.5deg)}.rz-callout__title{font-weight:600;font-size:var(--text-h4);margin:2px 0 4px}.rz-callout__body{font-size:var(--text-body);color:var(--text)}.rz-callout__body p:last-child{margin-bottom:0}.rz-callout--definition{--c:var(--callout-definition);--c-soft:var(--callout-definition-soft)}.rz-callout--rule{--c:var(--callout-rule);--c-soft:var(--callout-rule-soft)}.rz-callout--mistake{--c:var(--callout-mistake);--c-soft:var(--callout-mistake-soft)}.rz-callout--formula{--c:#c9a97a;--c-soft:var(--board);background:var(--c-soft);color:var(--chalk);border-radius:var(--radius-md);border:5px solid #c9a97a;box-shadow:inset 0 0 30px #00000040}.rz-callout--formula:after{display:none}.rz-callout--formula .rz-callout__icon{color:var(--chalk-accent);box-shadow:none;border-radius:var(--radius-md);background:#ffffff14;transform:none}.rz-callout--formula .rz-callout__kind{color:var(--board);box-shadow:var(--shadow-sticker);background:#e9d3a8}[data-theme=dark] .rz-callout--formula{border-color:#6b5637}[data-theme=dark] .rz-callout--formula .rz-callout__kind{background:#b59362}.rz-callout--formula .rz-callout__title,.rz-callout--formula .rz-callout__body{color:var(--chalk)}.rz-callout--formula .rz-formula{color:var(--chalk-accent)}.rz-callout--association{--c:var(--callout-association);--c-soft:var(--callout-association-soft);box-shadow:var(--shadow-sticker);border-width:1px;border-radius:3px;transform:rotate(-.6deg)}.rz-callout--association:after{display:none}.rz-callout--association:before{content:"";background:#ffffff73;border:1px solid #0000000d;width:58px;height:16px;position:absolute;top:-9px;right:28px;transform:rotate(2deg)}.rz-callout--association .rz-callout__body{font-family:var(--font-hand);color:var(--sticker-ink);font-size:20px;line-height:1.25}.rz-hook{gap:var(--space-4);padding:var(--space-5);border-radius:var(--radius-xl);background:var(--surface-tint);border:1px dashed var(--primary-soft-2);grid-template-columns:auto 1fr;align-items:start;display:grid}.rz-hook__q{font-family:var(--font-display);font-size:var(--text-h2);font-style:italic;font-weight:500;line-height:1.3}.rz-hook--answer{background:var(--success-soft);border-color:var(--success)}@supports (color:color-mix(in lab, red, red)){.rz-hook--answer{border-color:color-mix(in srgb, var(--success) 35%, transparent)}}.rz-hook--answer .rz-hook__q{font-style:normal;font-size:var(--text-h3)}.rz-goals{gap:var(--space-2);counter-reset:goal;margin:0;padding:0;list-style:none;display:grid}.rz-goals li{gap:var(--space-3);counter-increment:goal;grid-template-columns:28px 1fr;align-items:start;display:grid}.rz-goals li:before{content:counter(goal);background:var(--primary-soft);width:28px;height:28px;color:var(--primary);font-weight:700;font-size:var(--text-body-sm);border-radius:50%;place-items:center;display:grid}.rz-example{border:1px solid var(--border);border-radius:var(--radius-lg);margin:var(--space-5) 0;background:var(--surface);overflow:hidden}.rz-example__head{align-items:center;gap:var(--space-2);padding:10px var(--space-4);background:var(--surface-2);font-weight:600;font-size:var(--text-body-sm);display:flex}.rz-example__steps{padding:var(--space-2) 0;counter-reset:step;margin:0;list-style:none}.rz-example__steps li{gap:var(--space-3);padding:8px var(--space-4);counter-increment:step;border-bottom:1px solid var(--notebook-line);grid-template-columns:34px 1fr;display:grid}.rz-example__steps li:last-child{border-bottom:none}.rz-example__steps li:before{content:counter(step);font-family:var(--font-hand);color:var(--primary);text-align:center;font-size:22px;line-height:1}.rz-mistake{gap:var(--space-3);margin:var(--space-5) 0;grid-template-columns:1fr 1fr;display:grid}.rz-mistake>div{padding:var(--space-4);border-radius:var(--radius-lg);border:1px solid}.rz-mistake__wrong{background:var(--danger-soft);border-color:var(--danger)}@supports (color:color-mix(in lab, red, red)){.rz-mistake__wrong{border-color:color-mix(in srgb, var(--danger) 30%, transparent)}}.rz-mistake__right{background:var(--success-soft);border-color:var(--success)}@supports (color:color-mix(in lab, red, red)){.rz-mistake__right{border-color:color-mix(in srgb, var(--success) 30%, transparent)}}.rz-mistake__label{font-size:var(--text-overline);letter-spacing:.08em;text-transform:uppercase;align-items:center;gap:6px;margin-bottom:6px;font-weight:700;display:flex}.rz-mistake__wrong .rz-mistake__label{color:var(--danger-ink)}.rz-mistake__right .rz-mistake__label{color:var(--success-ink)}.rz-mistake__wrong .rz-body{text-decoration:line-through;-webkit-text-decoration-color:var(--danger);-webkit-text-decoration-color:var(--danger);-webkit-text-decoration-color:var(--danger);text-decoration-color:var(--danger);text-decoration-thickness:2px}.rz-figure{margin:var(--space-6) 0;gap:var(--space-2);display:grid}.rz-figure__frame{background:var(--figure-bg);border:1px solid var(--figure-border);border-radius:var(--radius-lg);padding:var(--figure-mat);box-shadow:var(--shadow-paper);position:relative}.rz-figure__frame img{border-radius:var(--radius-sm);width:100%;height:auto;display:block}.rz-figure__frame:after{content:"";inset:var(--figure-mat);border:1px solid var(--notebook-line);border-radius:var(--radius-sm);pointer-events:none;position:absolute}.rz-figure__cap{font-size:var(--text-body-sm);color:var(--text-2);gap:8px;padding:0 4px;display:flex}.rz-figure__num{font-family:var(--font-hand);color:var(--primary);white-space:nowrap;font-size:18px}.rz-figure__mode{position:absolute;top:8px;right:8px}[data-theme=dark] .rz-figure__frame img{filter:brightness(.88)contrast(.96)}.rz-figure--wide .rz-figure__frame{padding:0}.rz-figure--wide .rz-figure__frame img{border-radius:var(--radius-lg)}.rz-figure--wide .rz-figure__frame:after{display:none}.rz-figure--placeholder .rz-figure__frame{min-height:180px;color:var(--text-3);background-image:linear-gradient(var(--notebook-grid) 1px, transparent 1px), linear-gradient(90deg, var(--notebook-grid) 1px, transparent 1px);background-size:20px 20px;place-items:center;display:grid}.rz-figure__ph{font-size:var(--text-body-sm);text-align:center;justify-items:center;gap:6px;display:grid}.rz-figure__ph .rz-hand{color:var(--pencil-soft)}.rz-minicheck{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);margin:var(--space-5) 0}.rz-minicheck summary{cursor:pointer;gap:var(--space-3);padding:var(--space-3) var(--space-4);grid-template-columns:28px 1fr auto;align-items:center;font-weight:500;list-style:none;display:grid}.rz-minicheck summary::-webkit-details-marker{display:none}.rz-minicheck summary .rz-tile{--tile-color:var(--teal)}.rz-minicheck__hint{font-size:var(--text-caption);color:var(--text-3)}.rz-minicheck[open] .rz-minicheck__hint{display:none}.rz-minicheck__a{padding:0 var(--space-4) var(--space-4) 56px;color:var(--text-2);border-top:1px dashed var(--border);padding-top:var(--space-3)}.rz-compare{border-collapse:collapse;width:100%;font-size:var(--text-body-sm);margin:var(--space-5) 0;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);overflow:hidden}.rz-compare th{background:var(--surface-2);text-align:left;border-bottom:1px solid var(--border);padding:10px 14px;font-weight:600}.rz-compare td{border-bottom:1px solid var(--notebook-line);vertical-align:top;padding:10px 14px}.rz-compare tr:last-child td{border-bottom:none}.rz-compare td:first-child{color:var(--text-2);font-weight:500}.rz-compare caption{caption-side:bottom;text-align:left;font-size:var(--text-caption);color:var(--text-3);padding:6px 4px}.rz-deeper{border:1px dashed var(--border-strong);border-radius:var(--radius-lg);margin:var(--space-5) 0;background:0 0}.rz-deeper summary{cursor:pointer;padding:var(--space-3) var(--space-4);color:var(--text-2);font-weight:500;font-size:var(--text-body-sm);align-items:center;gap:10px;list-style:none;display:flex}.rz-deeper summary::-webkit-details-marker{display:none}.rz-deeper__body{padding:0 var(--space-4) var(--space-4);color:var(--text-2)}.rz-widget{border:1px solid var(--border);border-radius:var(--radius-xl);background:var(--surface);margin:var(--space-5) 0;overflow:hidden}.rz-widget__bar{align-items:center;gap:var(--space-2);padding:8px var(--space-4);border-bottom:1px solid var(--border);font-size:var(--text-body-sm);background:var(--surface-2);font-weight:500;display:flex}.rz-widget__bar .rz-tile{--tile-color:var(--info)}.rz-widget__body{padding:var(--space-5);background-image:linear-gradient(var(--notebook-grid) 1px, transparent 1px), linear-gradient(90deg, var(--notebook-grid) 1px, transparent 1px);background-size:20px 20px;place-items:center;min-height:160px;display:grid}.rz-part{gap:var(--space-1);display:grid}.rz-part__head{gap:var(--space-4);margin-bottom:var(--space-2);grid-template-columns:44px 1fr;align-items:start;display:grid}.rz-part__n{font-family:var(--font-hand);color:var(--primary);text-align:center;font-size:44px;line-height:1;transform:rotate(-5deg)}.rz-part__sub{color:var(--text-2);margin-top:4px}.rz-part--todo .rz-part__n{color:var(--status-todo)}.rz-slider{gap:var(--space-3);font-size:var(--text-body-sm);white-space:nowrap;grid-template-columns:96px 1fr 72px;align-items:center;width:100%;display:grid}.rz-slider .rz-timeline{cursor:pointer}.rz-slider__val{font-family:var(--font-mono);text-align:right;font-weight:700}.rz-slider--teal .rz-timeline__played{background:var(--teal)}.rz-slider--teal .rz-timeline__knob{border-color:var(--teal)}.rz-recap{gap:8px;margin:0;padding:0;list-style:none;display:grid}.rz-recap li{grid-template-columns:22px 1fr;align-items:start;gap:10px;display:grid}.rz-recap li .rz-icon{color:var(--success);width:18px;height:18px;margin-top:3px}.rz-terms{gap:0;margin:0;display:grid}.rz-terms>div{gap:var(--space-4);border-bottom:1px solid var(--notebook-line);grid-template-columns:180px 1fr;padding:10px 0;display:grid}.rz-terms dt{color:var(--teal-ink);font-weight:600}.rz-terms dd{color:var(--text-2);margin:0}.rz-exam{border:1px solid var(--border-strong);border-radius:var(--radius-md);background:var(--surface);padding:var(--space-4) var(--space-5);font-family:var(--font-display);position:relative}.rz-exam__tag{background:var(--text);color:var(--bg);font:700 var(--text-overline)/1 var(--font-sans);letter-spacing:.12em;border-radius:4px;padding:5px 8px;position:absolute;top:-10px;left:16px}.rz-exam__num{float:left;border:1.5px solid var(--text);width:32px;height:32px;font:700 14px var(--font-sans);place-items:center;margin-right:12px;display:grid}.rz-quiz{gap:var(--space-3);display:grid}.rz-quiz__q{font-family:var(--font-display);font-size:var(--text-h3);font-weight:500;line-height:1.35}.rz-quiz__head{justify-content:space-between;align-items:center;gap:var(--space-3);font-size:var(--text-caption);color:var(--text-3);display:flex}.rz-option{align-items:center;gap:var(--space-3);border:1.5px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);cursor:pointer;font-size:var(--text-body);transition:all var(--dur-fast) var(--ease);text-align:left;width:100%;color:var(--text);grid-template-columns:30px 1fr auto;padding:12px 14px;display:grid}.rz-option:hover{border-color:var(--border-strong);background:var(--surface-2)}.rz-option__key{width:30px;height:30px;font-weight:700;font-size:var(--text-body-sm);background:var(--surface-2);color:var(--text-2);border-radius:8px;place-items:center;display:grid}.rz-option--selected{border-color:var(--primary);background:var(--primary-soft)}.rz-option--selected .rz-option__key{background:var(--primary);color:var(--on-primary)}.rz-option--correct{border-color:var(--success);background:var(--success-soft)}.rz-option--correct .rz-option__key{background:var(--success);color:#fff}.rz-option--wrong{border-color:var(--danger);background:var(--danger-soft)}.rz-option--wrong .rz-option__key{background:var(--danger);color:#fff}.rz-option--muted{opacity:.55}.rz-option .rz-icon{width:18px;height:18px}.rz-explain{padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);background:var(--info-soft);color:var(--info-ink);font-size:var(--text-body-sm);grid-template-columns:24px 1fr;gap:10px;display:grid}.rz-explain .rz-icon{color:var(--info)}.rz-level{align-items:center;gap:3px;display:inline-flex}.rz-level i{background:var(--border-strong);border-radius:2px;width:6px;height:10px}.rz-level--easy i:nth-child(-n+1){background:var(--level-easy)}.rz-level--mid i:nth-child(-n+2){background:var(--level-mid)}.rz-level--hard i{background:var(--level-hard)}.rz-boss-head{gap:var(--space-4);padding:var(--space-4) var(--space-5);border-radius:var(--radius-xl);color:#f3efe4;background:linear-gradient(135deg,#3a3d6b 0%,#2a2c52 100%);grid-template-columns:auto 1fr auto;align-items:center;display:grid}.rz-boss-head .rz-tile{--tile-color:var(--mustard);box-shadow:none;background:#ffffff1a}.rz-boss-head__title{font-family:var(--font-display);font-size:var(--text-h3)}.rz-boss-head .rz-muted{color:#f3efe4b3}.rz-result{text-align:center;padding:var(--space-6);border-radius:var(--radius-xl);background:var(--surface);border:1px solid var(--border)}.rz-result__score{font-family:var(--font-display);color:var(--primary);font-size:56px;font-weight:600;line-height:1}.rz-result__score small{color:var(--text-3);font-size:20px}.rz-deck{aspect-ratio:16/9;width:100%;max-width:620px;position:relative;container-type:inline-size}.rz-deck__shadow{background:var(--pencil);opacity:.9;border-radius:28px;position:absolute;inset:14px -10px -14px 10px}.rz-deck__stage{perspective:1400px;transition:transform .45s var(--ease), opacity .45s var(--ease);position:absolute;inset:0}.rz-deck__inner{width:100%;height:100%;transition:transform .5s var(--ease);transform-style:preserve-3d;position:relative}.rz-deck--flipped .rz-deck__inner{transform:rotateY(180deg)}.rz-deck--ok .rz-deck__stage{opacity:.35;transform:translate(26px,18px)rotate(3deg)scale(.97)}.rz-deck--no .rz-deck__stage{opacity:.35;transform:translate(-24px,18px)rotate(-3deg)scale(.97)}.rz-deck__face{backface-visibility:hidden;border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-paper);cursor:pointer;text-align:left;font:inherit;color:inherit;border-radius:28px;grid-template-rows:auto 1fr auto;width:100%;padding:26px 34px 24px;display:grid;position:absolute;inset:0;overflow:hidden}.rz-deck__face:before{content:"";pointer-events:none;opacity:.5;background-image:linear-gradient(var(--notebook-grid) 1px, transparent 1px), linear-gradient(90deg, var(--notebook-grid) 1px, transparent 1px);background-size:26px 26px;position:absolute;inset:0}.rz-deck__face--back{background:var(--surface-tint);transform:rotateY(180deg)}.rz-deck__head{justify-content:space-between;align-items:center;display:flex;position:relative}.rz-deck__body{font-family:var(--font-display);text-wrap:pretty;align-content:center;font-size:32px;font-weight:800;line-height:1.28;display:grid;position:relative}.rz-deck__face--back .rz-deck__body{font-size:30px;line-height:1.3}.rz-deck__foot{justify-content:center;display:flex;position:relative}.rz-deck__body .rz-prose{font:inherit;max-width:none}.rz-deck__body .rz-prose>p:last-child{margin-bottom:0}.rz-deck__stamp{box-shadow:var(--shadow-sticker);font-family:var(--font-pencil);border-radius:28px;place-items:center;display:grid;position:absolute;inset:0}.rz-deck__stamp--ok{background:var(--sage-soft);border:1.5px solid var(--sage);color:var(--sage-ink);font-size:64px;transform:rotate(-3deg)translate(-14px,-16px)}.rz-deck__stamp--no{background:var(--terracotta-soft);border:1.5px solid var(--terracotta);color:var(--terracotta-ink);text-align:center;padding:60px;font-size:40px;line-height:1.2;transform:rotate(2.5deg)translate(12px,-14px)}.rz-deck-bar{justify-content:center;align-items:center;gap:14px;display:flex}.rz-deck-round{background:var(--surface);border:1.5px solid var(--border);width:56px;height:56px;color:var(--text-2);cursor:pointer;box-shadow:var(--shadow-paper);transition:all var(--dur-fast) var(--ease);border-radius:50%;place-items:center;display:grid}.rz-deck-round:hover{border-color:var(--pencil-soft);color:var(--text);transform:translateY(-1px)}.rz-deck-count{border-radius:var(--radius-pill);background:var(--surface);border:1.5px solid var(--border);height:52px;box-shadow:var(--shadow-paper);font-family:var(--font-display);cursor:pointer;align-items:center;gap:8px;padding:0 22px;font-size:18px;font-weight:800;display:inline-flex}.rz-deck-count--ok{color:var(--success)}.rz-deck-count--no{color:var(--danger)}@container (max-width:480px){.rz-deck__face{border-radius:22px;padding:18px 20px 16px}.rz-deck__body{font-size:24px}.rz-deck__face--back .rz-deck__body{font-size:22px}}@container (max-width:300px){.rz-deck__face{border-radius:18px;padding:12px 14px 10px}.rz-deck__body{font-size:17px}.rz-deck__face--back .rz-deck__body{font-size:16px}}@media (max-width:599px){.rz-deck{aspect-ratio:4/3}.rz-deck-round{width:48px;height:48px}.rz-deck-count{height:46px;padding:0 16px}}.rz-progress{--p:0%;--track-color:var(--primary);background:var(--surface-2);border-radius:4px;height:8px;position:relative;overflow:hidden}.rz-progress:after{content:"";clip-path:inset(0 calc(100% - var(--p)) 0 0 round 4px);background:linear-gradient(90deg, var(--track-color), var(--track-color));border-radius:4px;position:absolute;inset:0}@supports (color:color-mix(in lab, red, red)){.rz-progress:after{background:linear-gradient(90deg, color-mix(in srgb, var(--track-color) 85%, black 0%), var(--track-color))}}.rz-progress:after{background-image:repeating-linear-gradient(115deg,#ffffff2e 0 2px,#0000 2px 5px);background-color:var(--track-color);transition:clip-path .6s var(--ease)}.rz-progress--thin{height:5px}.rz-progress--success{--track-color:var(--success)}.rz-progress--warning{--track-color:var(--warning)}.rz-progress--subject{--track-color:var(--accent,var(--primary))}.rz-progress-row{gap:var(--space-3);grid-template-columns:1fr auto;align-items:center;display:grid}.rz-progress-row .rz-pct{font-family:var(--font-display);font-size:var(--text-h3);text-align:right;min-width:52px;font-weight:600}.rz-ring{--p:0;--size:72px;--w:7px;--ring-color:var(--primary);width:var(--size);height:var(--size);background:conic-gradient(var(--ring-color) calc(var(--p) * 1%), var(--surface-2) 0);border-radius:50%;place-items:center;display:grid;position:relative}.rz-ring:before{content:"";inset:var(--w);background:var(--surface);border-radius:50%;position:absolute}.rz-ring>span{font-family:var(--font-display);font-weight:600;font-size:calc(var(--size) * .26);position:relative}.rz-weeks{align-items:flex-end;gap:4px;display:flex}.rz-week{background:var(--surface-2);border:1px solid var(--border);border-radius:3px;width:14px;height:24px;position:relative}.rz-week--done{background:var(--success);border-color:var(--success)}.rz-week--partial{background:linear-gradient(to top, var(--success) 50%, var(--surface-2) 50%)}.rz-week--current{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-soft)}.rz-week--current:after{content:"";border:3px solid #0000;border-top-color:var(--primary);margin-left:-3px;position:absolute;top:-8px;left:50%}.rz-week--review{background:var(--warning);border-color:var(--warning)}.rz-weeks--wrap{flex-wrap:wrap}.rz-week--holiday{background:repeating-linear-gradient(45deg, var(--surface-2) 0 3px, var(--border) 3px 4px)}.rz-xp{border-radius:var(--radius-pill);background:var(--mustard-soft);color:var(--mustard-ink);font-weight:700;font-size:var(--text-body-sm);align-items:center;gap:6px;padding:4px 10px 4px 6px;display:inline-flex}.rz-xp__coin{background:radial-gradient(circle at 35% 35%, #ffe08a, var(--mustard) 70%);color:#7a5a0b;border-radius:50%;place-items:center;width:20px;height:20px;font-size:10px;display:grid;box-shadow:inset 0 0 0 2px #7a5a0b40}.rz-xp--gain{animation:rz-pop .5s var(--ease)}@keyframes rz-pop{0%{opacity:0;transform:scale(.8)}60%{opacity:1;transform:scale(1.08)}to{transform:scale(1)}}.rz-streak{align-items:center;gap:8px;display:inline-flex}.rz-streak__n{font-family:var(--font-display);font-size:var(--text-h2);color:var(--terracotta);font-weight:600;line-height:1}.rz-streak__days{gap:3px;display:flex}.rz-streak__days i{background:var(--surface-2);border:1px solid var(--border);border-radius:3px;width:10px;height:10px}.rz-streak__days i.is-on{background:var(--terracotta);border-color:var(--terracotta)}.rz-streak__days i.is-today{border-color:var(--terracotta);box-shadow:0 0 0 2px var(--terracotta-soft)}.rz-levelbar{gap:var(--space-3);grid-template-columns:auto 1fr auto;align-items:center;display:grid}.rz-levelbar__lvl{background:var(--primary);width:36px;height:36px;color:var(--on-primary);font-family:var(--font-display);border-radius:10px;place-items:center;font-weight:700;display:grid}.rz-award{--a:var(--mustard);text-align:center;width:92px;font-size:var(--text-caption);color:var(--text-2);justify-items:center;gap:6px;display:grid}.rz-award__medal{width:56px;height:56px;color:var(--a);background:radial-gradient(circle at 35% 30%, var(--a), var(--a) 75%);border-radius:50%;place-items:center;display:grid}@supports (color:color-mix(in lab, red, red)){.rz-award__medal{background:radial-gradient(circle at 35% 30%, color-mix(in srgb, var(--a) 25%, var(--surface)), color-mix(in srgb, var(--a) 45%, var(--surface)) 75%)}}.rz-award__medal{box-shadow:inset 0 0 0 2px var(--a), inset 0 0 0 5px var(--surface), inset 0 0 0 6px var(--a), var(--shadow-paper)}@supports (color:color-mix(in lab, red, red)){.rz-award__medal{box-shadow:inset 0 0 0 2px color-mix(in srgb, var(--a) 60%, transparent), inset 0 0 0 5px var(--surface), inset 0 0 0 6px color-mix(in srgb, var(--a) 40%, transparent), var(--shadow-paper)}}.rz-award__medal{position:relative}.rz-award__medal:before{content:"";background:var(--a);clip-path:polygon(0 0,100% 0,100% 100%,50% 70%,0 100%);opacity:.8;width:16px;height:18px;position:absolute;top:-10px}.rz-award--locked{filter:grayscale();opacity:.45}.rz-award--teal{--a:var(--teal)}.rz-award--violet{--a:var(--primary)}.rz-award--terracotta{--a:var(--terracotta)}.rz-award--sage{--a:var(--sage)}.rz-rank{margin:0;padding:0;list-style:none;display:grid}.rz-rank li{border-bottom:1px solid var(--notebook-line);font-size:var(--text-body-sm);grid-template-columns:24px 36px 1fr auto;align-items:center;gap:12px;padding:8px 4px;display:grid}.rz-rank li:last-child{border-bottom:none}.rz-rank__pos{font-family:var(--font-hand);color:var(--text-3);text-align:center;font-size:20px}.rz-rank__score{font-family:var(--font-display);font-size:var(--text-h3);font-weight:600}.rz-rank li.is-me{background:var(--primary-soft);border-radius:var(--radius-md);margin:0 -8px;padding:8px 12px}.rz-avatar{background:var(--surface-tint);width:36px;height:36px;color:var(--primary);font-weight:600;font-size:var(--text-body-sm);border:2px solid var(--surface);box-shadow:var(--shadow-ring);border-radius:50%;place-items:center;display:inline-grid;overflow:hidden}.rz-avatar--sm{width:26px;height:26px;font-size:11px}.rz-avatar--lg{width:56px;height:56px;font-size:var(--text-h3)}.rz-avatar-stack{display:inline-flex}.rz-avatar-stack .rz-avatar{margin-left:-8px}.rz-avatar-stack .rz-avatar:first-child{margin-left:0}.rz-player{border-radius:var(--radius-xl);border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-paper);overflow:hidden}.rz-player__screen{aspect-ratio:16/9;background:linear-gradient(135deg, var(--navy) 0%, #1f2140 100%);place-items:center;display:grid;position:relative}.rz-player__play{width:64px;height:64px;color:var(--navy);cursor:pointer;background:#ffffffeb;border-radius:50%;place-items:center;display:grid;box-shadow:0 8px 24px #0000004d}.rz-player__play .rz-icon{fill:currentColor;stroke:none;width:26px;height:26px;margin-left:3px}.rz-player__bar{gap:8px;padding:10px 14px 12px;display:grid}.rz-timeline{background:var(--surface-2);border-radius:3px;height:6px;position:relative}.rz-timeline__played{background:var(--primary);border-radius:3px;width:38%;position:absolute;top:0;bottom:0;left:0}.rz-timeline__chapter{background:var(--border-strong);border-radius:1px;width:2px;height:12px;position:absolute;top:-3px}.rz-timeline__knob{background:var(--surface);border:2px solid var(--primary);border-radius:50%;width:14px;height:14px;margin:-7px 0 0 -7px;position:absolute;top:50%;left:38%}.rz-player__ctl{font-size:var(--text-caption);color:var(--text-2);align-items:center;gap:10px;display:flex}.rz-player__ctl .rz-mono{color:var(--text-3)}.rz-chapters{margin:0;padding:0;list-style:none;display:grid}.rz-chapters li{border-radius:var(--radius-md);font-size:var(--text-body-sm);cursor:pointer;grid-template-columns:52px 1fr auto;align-items:center;gap:10px;padding:8px 12px;display:grid}.rz-chapters li:hover{background:var(--surface-2)}.rz-chapters li.is-active{background:var(--primary-soft);color:var(--primary);font-weight:500}.rz-chapters__t{font-family:var(--font-mono);font-size:var(--text-caption);color:var(--text-3)}.rz-chapters li.is-active .rz-chapters__t{color:var(--primary)}.rz-audio{gap:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--radius-xl);border:1px solid var(--border);background:var(--surface);grid-template-columns:auto 1fr;align-items:center;display:grid}.rz-audio__play{background:var(--primary);width:44px;height:44px;color:var(--on-primary);cursor:pointer;border-radius:50%;place-items:center;display:grid}.rz-audio__play .rz-icon{fill:currentColor;stroke:none;width:18px;height:18px;margin-left:2px}.rz-wave{align-items:center;gap:2px;height:36px;display:flex;position:relative}.rz-wave i{background:var(--border-strong);height:var(--h,40%);border-radius:2px;flex:1}.rz-wave i.is-played{background:var(--primary)}.rz-wave__mark{background:var(--terracotta);border-radius:1px;width:2px;position:absolute;top:-6px;bottom:-6px}.rz-wave__mark:after{content:attr(data-label);color:var(--terracotta);white-space:nowrap;font-size:10px;font-weight:600;position:absolute;top:-14px;left:-6px}.rz-audio__meta{font-size:var(--text-caption);color:var(--text-3);justify-content:space-between;margin-top:4px;display:flex}.rz-slides{gap:var(--space-2);grid-template-columns:repeat(4,1fr);display:grid}.rz-slide{aspect-ratio:16/10;border-radius:var(--radius-md);border:1px solid var(--border);background:var(--surface);font-size:var(--text-caption);color:var(--text-3);cursor:pointer;place-items:center;display:grid}.rz-slide.is-active{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-soft)}.rz-shelf{gap:var(--space-4);grid-template-columns:repeat(auto-fill,minmax(220px,1fr));display:grid}.rz-shelf-card{--accent:var(--primary);padding:var(--space-4);border-radius:var(--radius-md);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-paper);background-image:linear-gradient(var(--notebook-grid) 1px, transparent 1px), linear-gradient(90deg, var(--notebook-grid) 1px, transparent 1px);background-size:20px 20px;position:relative}.rz-shelf-card__kind{font-size:var(--text-overline);letter-spacing:.08em;text-transform:uppercase;color:var(--accent);align-items:center;gap:5px;margin-bottom:6px;font-weight:700;display:inline-flex}.rz-shelf-card__pin{background:var(--terracotta);border-radius:50%;width:12px;height:12px;position:absolute;top:-6px;right:14px;box-shadow:0 2px 3px #0000004d,inset 0 -2px #0003}.rz-shelf-card__body{font-size:var(--text-body)}.rz-shelf-card__src{font-size:var(--text-caption);color:var(--text-3);margin-top:8px}.rz-tooltip{border-radius:var(--radius-sm);background:var(--text);color:var(--bg);font-size:var(--text-caption);max-width:260px;padding:6px 10px;display:inline-block;position:relative}.rz-tooltip:after{content:"";border:5px solid #0000;border-top-color:var(--text);position:absolute;top:100%;left:14px}.rz-tooltip[data-side=bottom]:after{border-top-color:#0000;border-bottom-color:var(--text);top:auto;bottom:100%}.rz-tooltip[data-side=left]:after,.rz-tooltip[data-side=right]:after{display:none}.rz-toast{border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-raised);font-size:var(--text-body-sm);--c:var(--primary);border-radius:var(--sketch-radius);border:1.5px solid var(--c);grid-template-columns:auto 1fr auto;align-items:center;gap:10px;min-width:280px;max-width:380px;padding:10px 12px 10px 14px;display:grid}@supports (color:color-mix(in lab, red, red)){.rz-toast{border:1.5px solid color-mix(in srgb, var(--c) 45%, var(--border))}}.rz-toast--success{--c:var(--success)}.rz-toast--danger{--c:var(--danger)}.rz-toast--xp{--c:var(--mustard)}.rz-toast .rz-tile{--tile-color:var(--c)}.rz-modal{background:var(--surface);width:min(520px,100%);color:var(--text);border:1.5px solid var(--pencil-soft);border-radius:var(--sketch-radius);box-shadow:var(--shadow-raised);margin-top:10px;position:relative}.rz-modal:before{content:"";background:#fff4c8bf;border:1px solid #0000000f;width:84px;height:20px;margin-left:-42px;position:absolute;top:-10px;left:50%;transform:rotate(-1.5deg);box-shadow:0 1px 2px #00000014}[data-theme=dark] .rz-modal:before{background:#fff4c847}.rz-modal:after{content:"";pointer-events:none;border:1px solid var(--pencil-faint);border-radius:15px 225px 15px 255px/255px 15px 225px;position:absolute;inset:-4px -3px -3px -4px;transform:rotate(.3deg)}.rz-modal__head{justify-content:space-between;align-items:center;gap:var(--space-3);padding:var(--space-5) var(--space-5) var(--space-3);display:flex}.rz-modal__title{font-family:var(--font-display);font-weight:var(--weight-display);font-size:var(--text-h3)}.rz-modal__title .rz-underline{--accent:var(--primary)}.rz-modal__close{border:1.5px dashed var(--pencil-faint);width:32px;height:32px;color:var(--text-2);cursor:pointer;font-family:var(--font-pencil);background:0 0;border-radius:50%;place-items:center;font-size:22px;line-height:1;display:grid;transform:rotate(6deg)}.rz-modal__close:hover{color:var(--danger);border-color:var(--danger);background:var(--danger-soft)}.rz-modal__body{padding:0 var(--space-5) var(--space-5)}.rz-modal__foot{justify-content:flex-end;gap:var(--space-2);padding:var(--space-3) var(--space-5) var(--space-5);border-top:2px dashed var(--notebook-line);display:flex}.rz-backdrop{background:var(--text)}@supports (color:color-mix(in lab, red, red)){.rz-backdrop{background:color-mix(in srgb, var(--text) 45%, transparent)}}.rz-backdrop{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);padding:var(--space-8);border-radius:var(--radius-lg);place-items:center;display:grid}.rz-backdrop--fixed{z-index:60;border-radius:0;position:fixed;inset:0;overflow:auto}.rz-menu{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);min-width:200px;box-shadow:var(--shadow-raised);padding:6px}.rz-menu__item{border-radius:var(--radius-sm);font-size:var(--text-body-sm);cursor:pointer;color:var(--text);align-items:center;gap:10px;padding:8px 10px;display:flex}.rz-menu__item:hover{background:var(--surface-2)}.rz-menu__item--danger{color:var(--danger)}.rz-menu__sep{background:var(--border);height:1px;margin:4px 6px}.rz-pager{gap:4px;display:inline-flex}.rz-pager button{border-radius:var(--radius-sm);min-width:32px;height:32px;color:var(--text-2);font:500 var(--text-body-sm) var(--font-sans);cursor:pointer;background:0 0;border:1px solid #0000;padding:0 8px}.rz-pager button:hover{background:var(--surface-2)}.rz-pager button[aria-current=page]{background:var(--text);color:var(--bg)}.rz-empty{text-align:center;padding:var(--space-8) var(--space-5);border:1px dashed var(--border-strong);border-radius:var(--radius-xl);color:var(--text-2);justify-items:center;gap:var(--space-2);display:grid}.rz-empty .rz-hand{color:var(--pencil-soft);font-size:24px}.rz-skeleton{border-radius:var(--radius-sm);background:linear-gradient(90deg, var(--surface-2) 25%, var(--border) 50%, var(--surface-2) 75%);background-size:200% 100%;height:14px;animation:1.4s infinite rz-shimmer}@keyframes rz-shimmer{to{background-position:-200% 0}}.rz-divider{background:var(--border);height:1px;margin:var(--space-5) 0}.rz-divider--pencil{background:repeating-linear-gradient(90deg, var(--pencil-soft) 0 6px, transparent 6px 9px);opacity:.5;height:2px}.rz-shell{grid-template-columns:var(--rail-w) 1fr;gap:var(--space-5);align-items:start;display:grid}.rz-bento{gap:var(--space-4);grid-template-columns:repeat(12,1fr);display:grid}.rz-col-3{grid-column:span 3}.rz-col-4{grid-column:span 4}.rz-col-5{grid-column:span 5}.rz-col-6{grid-column:span 6}.rz-col-7{grid-column:span 7}.rz-col-8{grid-column:span 8}.rz-col-12{grid-column:span 12}@media (max-width:900px){.rz-bento>*{grid-column:span 12}.rz-shell{grid-template-columns:1fr}}.rz-stack{gap:var(--space-3);display:grid}.rz-row{align-items:center;gap:var(--space-3);flex-wrap:wrap;display:flex}.rz-between{justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.rz-grid-2{gap:var(--space-4);grid-template-columns:1fr 1fr;display:grid}.rz-grid-3{gap:var(--space-4);grid-template-columns:repeat(3,1fr);display:grid}.rz-ml-auto{margin-left:auto}.rz-page{container:rz-page/inline-size}@container rz-page (max-width:640px){h1{font-size:28px}h2{font-size:22px}.rz-part__head{gap:var(--space-3);grid-template-columns:34px 1fr;margin-bottom:6px}.rz-part__n{font-size:38px}.rz-part__sub{font-size:14px}.rz-hook{padding:var(--space-4);grid-template-columns:1fr}.rz-hook__q{font-size:20px}.rz-callout{grid-template-columns:30px 1fr;padding:18px 14px 14px 12px}.rz-callout__icon{width:30px;height:30px}.rz-mistake{grid-template-columns:1fr}.rz-terms>div{grid-template-columns:1fr;gap:2px}.rz-compare th,.rz-compare td{padding:8px 10px;font-size:12.5px}.rz-example__steps li{padding:8px var(--space-3);grid-template-columns:26px 1fr}.rz-option{padding:10px var(--space-3);grid-template-columns:28px 1fr auto}.rz-quiz__q{font-size:17px}.rz-slider{gap:var(--space-2);grid-template-columns:90px 1fr 60px}}.rz-paper{isolation:isolate;position:relative}.rz-paper:before{content:"";z-index:-1;pointer-events:none;opacity:var(--grain);mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.35 0 0 0 0 0.32 0 0 0 0 0.42 0 0 0 0.16 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");position:absolute;inset:0}[data-theme=dark] .rz-paper:before{mix-blend-mode:screen;opacity:calc(var(--grain) * .6)}.rz-sketch{position:relative;border:none!important}.rz-sketch:before,.rz-sketch:after{content:"";pointer-events:none;border:1.5px solid var(--sketch-color,var(--pencil-soft));border-radius:var(--sketch-radius);filter:url(#rz-pencil);position:absolute;inset:0}.rz-sketch:after{opacity:.55;border-width:1px;border-radius:15px 225px 15px 255px/255px 15px 225px;inset:-3px -2px -2px -3px;transform:rotate(.3deg)}.rz-sketch--accent{--sketch-color:var(--accent)}.rz-sketch--single:after{display:none}.rz-sketch--dashed:before{border-style:dashed}.rz-sketch--dashed:after{display:none}.rz-pencil-line{height:3px;margin:var(--space-5) 0;background:0 0;border:none;position:relative}.rz-pencil-line:before{content:"";border-top:1.5px solid var(--pencil-soft);filter:url(#rz-pencil);border-radius:50%;position:absolute;inset:1px 0}.rz-underline{--accent:var(--primary);display:inline-block;position:relative}.rz-underline:after{content:"";pointer-events:none;background:var(--accent);height:.36em;position:absolute;bottom:-.18em;left:-2%;right:-2%;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 24' preserveAspectRatio='none'%3E%3Cpath d='M3 14c30-6 62-8 98-6 32 2 60 1 96-4' fill='none' stroke='%23000' stroke-width='3.2' stroke-linecap='round'/%3E%3Cpath d='M8 19c40-3 90-7 186-5' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' opacity='.6'/%3E%3C/svg%3E") 50%/100% 100% no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 24' preserveAspectRatio='none'%3E%3Cpath d='M3 14c30-6 62-8 98-6 32 2 60 1 96-4' fill='none' stroke='%23000' stroke-width='3.2' stroke-linecap='round'/%3E%3Cpath d='M8 19c40-3 90-7 186-5' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' opacity='.6'/%3E%3C/svg%3E") 50%/100% 100% no-repeat}.rz-marker{z-index:0;--accent:var(--mustard);background:linear-gradient(transparent 50%, var(--accent) 50%, var(--accent) 92%, transparent 92%);margin:0 -3px;padding:0 3px;display:inline;position:relative}@supports (color:color-mix(in lab, red, red)){.rz-marker{background:linear-gradient(transparent 50%, color-mix(in srgb, var(--accent) 38%, transparent) 50%, color-mix(in srgb, var(--accent) 38%, transparent) 92%, transparent 92%)}}.rz-marker{-webkit-box-decoration-break:clone;box-decoration-break:clone}.rz-circled{padding:0 .25em;display:inline-block;position:relative}.rz-circled:before{content:"";pointer-events:none;border:2px solid var(--accent,var(--terracotta));filter:url(#rz-pencil);opacity:.85;border-radius:50% 45% 55% 48%/55% 50% 48% 45%;position:absolute;inset:-.3em -.35em -.25em -.3em;transform:rotate(-2deg)}.rz-living{font-family:var(--font-pencil);color:var(--accent,var(--primary));letter-spacing:0;vertical-align:-.04em;padding:0 .06em;font-size:1.12em;font-style:normal;font-weight:400;line-height:1;display:inline-block;position:relative}.rz-living__word{transition:opacity .22s var(--ease), transform .22s var(--ease);display:inline-block}.rz-living__word.is-out{opacity:0;transform:translateY(.25em)rotate(-2deg)}.rz-living__stroke{pointer-events:none;height:.34em;position:absolute;bottom:-.16em;left:-3%;right:-3%;overflow:visible}.rz-living__stroke path{fill:none;stroke:currentColor;stroke-width:3px;stroke-linecap:round;stroke-dasharray:260;stroke-dashoffset:260px;animation:rz-draw .7s .25s var(--ease) forwards}.rz-living__stroke path+path{stroke-width:1.8px;opacity:.55;animation-delay:.45s}@keyframes rz-draw{to{stroke-dashoffset:0}}.rz-living.is-swap .rz-living__stroke path{stroke-dashoffset:260px;animation:none}.rz-doodle{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;vertical-align:-.3em;width:1.4em;height:1.4em;overflow:visible}.rz-doodle--lg{width:2.4em;height:2.4em}.rz-doodle--faint{opacity:.55}.rz-doodle-img{mix-blend-mode:multiply;max-width:100%;display:block}[data-theme=dark] .rz-doodle-img{filter:invert()brightness(.9);mix-blend-mode:screen;opacity:.85}.rz-select-btn{justify-content:space-between;align-items:center;gap:var(--space-2);width:100%;height:38px;padding:0 10px 0 var(--space-3);border:1px solid var(--border-strong);border-radius:var(--radius-md);background:var(--surface);color:var(--text);font:400 var(--text-body)/1 var(--font-sans);cursor:pointer;text-align:left;display:inline-flex}.rz-select-btn--sm{height:30px;padding:0 8px 0 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9px;text-decoration:none;display:flex}.lp-tree-item:hover{background:var(--surface-2);color:var(--text)}.lp-tree-item[aria-current=true]{background:var(--primary-soft);color:var(--primary);font-weight:600}.lp-sub{border-left:1px solid var(--border);font-size:var(--text-body-sm);color:var(--text-2);align-items:center;gap:8px;margin-left:22px;padding:6px 9px 6px 12px;text-decoration:none;display:flex}.lp-sub:hover{color:var(--text)}.lp-sub[aria-current=true]{background:var(--primary-soft);color:var(--primary);border-left-color:var(--primary);border-radius:8px;font-weight:600}.lp-sub--lesson{font-size:var(--text-caption);margin-left:34px;padding-left:10px}.lp-sub--flat{border-left:none;margin-left:0;padding-left:0}.lp-resp{gap:var(--space-4);display:grid}.lp-cols{grid-template-columns:minmax(0,1fr) 300px;align-items:start}.lp-cols--goals{grid-template-columns:220px minmax(0,1fr)}.lp-cols--nav{grid-template-columns:1fr 1fr}.lp-tex{white-space:normal;font-family:inherit;font-size:1em;font-style:normal}.lp-tex .katex{font-size:1.05em}.lp-body{gap:var(--space-4);display:grid}.rz-prose>p{margin:0 0 var(--space-3)}.rz-prose>p:last-child{margin-bottom:0}.rz-prose h3{font-size:var(--text-h3);margin:0 0 var(--space-2)}.rz-prose h4{font-size:var(--text-body-lg);margin:var(--space-3) 0 var(--space-2);font-weight:600}.rz-prose ul{margin:0 0 var(--space-3);padding-left:1.35em;list-style:outside}.rz-prose ol{margin:0 0 var(--space-3);padding-left:1.35em;list-style:decimal}.rz-prose li{margin-bottom:.35em}.rz-prose li:last-child{margin-bottom:0}.lp-inline{display:inline}.lp-inline>p{margin:0;display:inline}.pg-media{align-items:start;gap:var(--space-4);grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);display:grid}.pg-media .rz-player__ctl>*{white-space:nowrap}.pg-media .rz-player__ctl a{color:var(--text-2)}@media (max-width:899px){.lp-cols,.lp-cols--goals,.lp-cols--nav,.pg-media{grid-template-columns:minmax(0,1fr)}}.lp h1{font-size:var(--text-h1)}.lp h2{font-size:var(--text-h2)}.lp h1,.lp h2,.lp h3{font-family:var(--font-display);margin:0;font-weight:800;line-height:1.2}.lp p{margin:0}.lp a:not([class]){color:var(--primary);text-decoration:none}.lp a:not([class]):hover{color:var(--primary-hover)}.lp .rz-prose{max-width:min(720px,100%)}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-gradient-position{syntax:"*";inherits:false}@property --tw-gradient-from{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-via{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-to{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-stops{syntax:"*";inherits:false}@property --tw-gradient-via-stops{syntax:"*";inherits:false}@property --tw-gradient-from-position{syntax:"<length-percentage>";inherits:false;initial-value:0%}@property --tw-gradient-via-position{syntax:"<length-percentage>";inherits:false;initial-value:50%}@property --tw-gradient-to-position{syntax:"<length-percentage>";inherits:false;initial-value:100%}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}