:root{color-scheme:light;--font-sans:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;--font-math:"KaTeX_Math", "Cambria Math", "STIX Two Math", "Times New Roman", serif;--font-mono:ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;--bg:#f5f7fb;--surface:#fff;--surface-2:#eef1f6;--surface-3:#e3e8f0;--text:#17202c;--muted:#556173;--border:#dce1ea;--border-strong:#c3cad7;--brand:#2b5fd9;--brand-strong:#1e47ad;--brand-soft:#e5edff;--on-brand:#fff;--math:#2b5fd9;--math-soft:#e5edff;--physics:#c8500c;--physics-soft:#ffeee3;--chemistry:#16794a;--chemistry-soft:#e1f4ea;--success:#1d7a46;--warning-bg:#fff6db;--warning-text:#6b4e00;--focus:#b45309;--radius-lg:20px;--radius:14px;--radius-sm:9px;--shadow-sm:0 1px 2px #1018280f;--shadow:0 1px 2px #1018280d, 0 2px 8px #1018280f;--shadow-lg:0 12px 32px #10182824;--container:1240px;--gutter:clamp(16px, 4vw, 32px);--header-h:64px;--plot-scheme:light;--plot-bg:#fff;--plot-grid:#dfe4ec;--plot-grid-minor:#f1f3f7;--plot-axis:#475263;--plot-text:#17202c;--plot-muted:#5b6676;--series-1:#2c5fd6;--series-2:#cc3f76;--series-3:#0f6544;--series-4:#b8600c;--series-5:#7052dc;--series-6:#0a7d96}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg:#0d1218;--surface:#151c26;--surface-2:#1c2531;--surface-3:#263141;--text:#e6eaf0;--muted:#9ba7b7;--border:#283241;--border-strong:#3a4657;--brand:#7ea5ff;--brand-strong:#a8c1ff;--brand-soft:#1a2846;--on-brand:#0b1220;--math:#7ea5ff;--math-soft:#1a2846;--physics:#ff9d63;--physics-soft:#382214;--chemistry:#56d59f;--chemistry-soft:#12322a;--success:#56d59f;--focus:#f59f00;--warning-bg:#3a2f10;--warning-text:#ffe08a;--shadow-sm:0 1px 2px #0006;--shadow:0 1px 2px #00000059, 0 2px 10px #0000004d;--shadow-lg:0 12px 32px #00000080;--plot-scheme:dark;--plot-bg:#10161f;--plot-grid:#232c39;--plot-grid-minor:#161d27;--plot-axis:#b9c3d1;--plot-text:#e6eaf0;--plot-muted:#9ba7b7;--series-1:#78a0fa;--series-2:#f283ad;--series-3:#3fae7f;--series-4:#e8a650;--series-5:#a68cf2;--series-6:#4cc0d6}}:root[data-theme=dark]{color-scheme:dark;--bg:#0d1218;--surface:#151c26;--surface-2:#1c2531;--surface-3:#263141;--text:#e6eaf0;--muted:#9ba7b7;--border:#283241;--border-strong:#3a4657;--brand:#7ea5ff;--brand-strong:#a8c1ff;--brand-soft:#1a2846;--on-brand:#0b1220;--math:#7ea5ff;--math-soft:#1a2846;--physics:#ff9d63;--physics-soft:#382214;--chemistry:#56d59f;--chemistry-soft:#12322a;--success:#56d59f;--focus:#f59f00;--warning-bg:#3a2f10;--warning-text:#ffe08a;--shadow-sm:0 1px 2px #0006;--shadow:0 1px 2px #00000059, 0 2px 10px #0000004d;--shadow-lg:0 12px 32px #00000080;--plot-scheme:dark;--plot-bg:#10161f;--plot-grid:#232c39;--plot-grid-minor:#161d27;--plot-axis:#b9c3d1;--plot-text:#e6eaf0;--plot-muted:#9ba7b7;--series-1:#78a0fa;--series-2:#f283ad;--series-3:#3fae7f;--series-4:#e8a650;--series-5:#a68cf2;--series-6:#4cc0d6}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 12px)}body{background:var(--bg);min-height:100vh;color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;flex-direction:column;margin:0;font-size:1.0625rem;line-height:1.6;display:flex}main{flex:1}img,svg,canvas{max-width:100%;display:block}h1,h2,h3,h4{letter-spacing:-.01em;text-wrap:balance;margin:0 0 .5em;line-height:1.2}h1{letter-spacing:-.02em;font-size:clamp(1.9rem,1.4rem + 2vw,2.8rem)}h2{font-size:clamp(1.4rem,1.2rem + .8vw,1.8rem)}h3{font-size:1.15rem}p{margin:0 0 1em}a{color:var(--brand);text-underline-offset:.18em}a:hover{color:var(--brand-strong)}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}var{font-family:var(--font-math);font-style:italic}sub,sup{line-height:0}[hidden]{display:none!important}.hat{line-height:1;display:inline-block;position:relative}.hat:after{content:"";pointer-events:none;border:0 solid;border-width:.075em 0 0 .075em;width:.22em;height:.22em;position:absolute;top:-.04em;left:50%;transform:translate(-50%)rotate(45deg)}.hat--low:after{top:.16em}var .hat:after,i .hat:after,em .hat:after{left:62%}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.skip-link{z-index:100;border-radius:var(--radius-sm);background:var(--brand);color:var(--on-brand);padding:10px 14px;font-weight:600;position:absolute;top:-100px;left:12px}.skip-link:focus{top:12px}.container{width:100%;max-width:var(--container);padding-inline:var(--gutter);margin-inline:auto}.section{padding-block:clamp(32px,5vw,56px)}.section__head{flex-wrap:wrap;justify-content:space-between;align-items:end;gap:16px;margin-bottom:20px;display:flex}.section__head h2{margin:0}.lead{color:var(--muted);max-width:62ch;font-size:clamp(1.08rem,1rem + .35vw,1.25rem)}.muted{color:var(--muted)}.btn{border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);min-height:40px;color:var(--text);font:inherit;cursor:pointer;justify-content:center;align-items:center;gap:8px;padding:8px 14px;font-size:.95rem;font-weight:600;line-height:1.2;text-decoration:none;transition:background-color .15s,border-color .15s,color .15s;display:inline-flex}.btn:hover{background:var(--surface-2);color:var(--text)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}.btn--primary:hover{background:var(--brand-strong);border-color:var(--brand-strong);color:var(--on-brand)}.btn--ghost{background:0 0;border-color:#0000}.btn--icon{width:40px;padding:0}.btn--lg{min-height:48px;padding:12px 20px;font-size:1rem}.chip{border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font:inherit;cursor:pointer;border-radius:999px;align-items:center;gap:6px;padding:5px 11px;font-size:.875rem;line-height:1.3;display:inline-flex}.chip:hover:not(:disabled){border-color:var(--brand);color:var(--brand)}.chip:disabled{opacity:.5;cursor:not-allowed}.chip[aria-pressed=true]{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}.chips{flex-wrap:wrap;gap:8px;display:flex}.badge{background:var(--surface-2);color:var(--muted);white-space:nowrap;border-radius:999px;align-items:center;gap:5px;padding:2px 9px;font-size:.8rem;font-weight:600;line-height:1.6;display:inline-flex}.badge--subject-mathematik{background:var(--math-soft);color:var(--math)}.badge--subject-physik{background:var(--physics-soft);color:color-mix(in srgb, var(--physics) 82%, var(--text))}.badge--subject-chemie{background:var(--chemistry-soft);color:var(--chemistry)}.subject-mathematik{--accent:var(--math);--accent-soft:var(--math-soft)}.subject-physik{--accent:var(--physics);--accent-soft:var(--physics-soft)}.subject-chemie{--accent:var(--chemistry);--accent-soft:var(--chemistry-soft)}.site-header{z-index:50;background:color-mix(in srgb, var(--bg) 88%, transparent);-webkit-backdrop-filter:saturate(1.4)blur(10px);border-bottom:1px solid var(--border);position:sticky;top:0}.site-header__inner{min-height:var(--header-h);align-items:center;gap:16px;display:flex}.brand{color:var(--text);letter-spacing:-.01em;white-space:nowrap;align-items:center;gap:10px;font-size:1.05rem;font-weight:750;text-decoration:none;display:inline-flex}.brand:hover{color:var(--text)}.brand__logo{object-fit:contain;flex:none;width:42px;height:42px}:root[data-theme=dark] .brand__logo{filter:brightness(0)invert(.9)}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .brand__logo{filter:brightness(0)invert(.9)}}.brand{min-width:0}.brand>span{text-overflow:ellipsis;overflow:hidden}@media (width<=440px){.site-header__inner{gap:8px}.brand{gap:6px;font-size:.98rem}.brand__logo{width:34px;height:34px}.header-tools{gap:2px}.header-tools .lang-switch a{padding-inline:7px}}@media (width<=374px){.brand{flex:none}.brand>span{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.header-tools .btn--icon{width:36px}}.site-nav{align-items:center;gap:4px;margin-left:auto;display:flex}.site-nav__link{border-radius:var(--radius-sm);color:var(--text);white-space:nowrap;padding:8px 12px;font-size:.95rem;font-weight:550;text-decoration:none}.site-nav__link:hover{background:var(--surface-2);color:var(--text)}.site-nav__link[aria-current=page],.site-nav__link.is-active{color:var(--brand);background:var(--brand-soft)}.site-nav__soon{text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-left:2px;font-size:.7rem;font-weight:700}.header-tools{align-items:center;gap:4px;display:flex}.lang-switch{border:1px solid var(--border);background:var(--surface);border-radius:999px;padding:3px;display:inline-flex}.lang-switch a{color:var(--muted);text-transform:uppercase;border-radius:999px;padding:3px 10px;font-size:.82rem;font-weight:700;text-decoration:none}.lang-switch a[aria-current=true]{background:var(--brand);color:var(--on-brand)}.settings{position:relative}.settings__toggle[aria-expanded=true]{background:var(--surface-2)}.settings__panel{z-index:60;width:min(320px, calc(100vw - 2 * var(--gutter)));border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);box-shadow:var(--shadow-lg);gap:10px;padding:16px;display:grid;position:absolute;top:calc(100% + 8px);right:0}.settings__title{margin:0;font-size:1rem}.settings__panel .select{width:100%}.settings__hint{color:var(--muted);margin:0;font-size:.85rem}@media (width<=600px){.settings{position:static}.settings__panel{top:var(--header-h);left:var(--gutter);right:var(--gutter);width:auto;position:absolute}}.badge--region{background:var(--brand-soft);color:var(--brand)}.region-grade+.region-grade{margin-top:28px}.region-grade h3{margin-bottom:12px;font-size:1.1rem}.region-grade__again{color:var(--muted);margin-top:10px;font-size:.92rem}.region-stack{flex-direction:column;gap:18px;display:flex}.menu-toggle{display:none}@media (width<=960px){.menu-toggle{display:inline-flex}.site-nav{top:var(--header-h);padding:12px var(--gutter) 20px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);flex-direction:column;align-items:stretch;gap:2px;margin:0;display:none;position:absolute;left:0;right:0}.site-nav.is-open{display:flex}.site-nav__link{padding:12px;font-size:1rem}.header-tools{margin-left:auto}}.site-footer{border-top:1px solid var(--border);background:var(--surface);color:var(--muted);margin-top:48px;padding-block:32px 40px;font-size:.92rem}.site-footer__inner{flex-wrap:wrap;justify-content:space-between;gap:16px 32px;display:flex}.site-footer__links{flex-wrap:wrap;gap:8px 20px;margin:0;padding:0;list-style:none;display:flex}.site-footer a{color:var(--muted)}.site-footer a:hover{color:var(--text)}.breadcrumbs{margin:20px 0 8px;font-size:.9rem}.breadcrumbs ol{color:var(--muted);flex-wrap:wrap;align-items:center;gap:4px 8px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li+li:before{content:"›";color:var(--border-strong);margin-right:8px}.breadcrumbs a{color:var(--muted);text-decoration:none}.breadcrumbs a:hover{color:var(--brand);text-decoration:underline}.page-head{padding-block:8px 24px}.page-head__meta{flex-wrap:wrap;gap:8px;margin-bottom:12px;display:flex}.page-head h1{margin-bottom:.3em}.hero{padding-block:clamp(40px,7vw,88px) clamp(32px,5vw,56px);position:relative;overflow:hidden}.hero__grid{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:center;gap:clamp(24px,5vw,64px);display:grid}.hero__eyebrow{background:var(--brand-soft);color:var(--brand);border-radius:999px;margin-bottom:14px;padding:4px 12px;font-size:.85rem;font-weight:700;display:inline-block}.hero h1{margin-bottom:.35em;font-size:clamp(2.2rem,1.5rem + 3vw,3.6rem)}.hero__actions{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.hero__art{border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-lg);padding:12px}.hero__art svg{width:100%;height:auto}@media (width<=860px){.hero__grid{grid-template-columns:1fr}}.progress{max-width:420px;margin-top:24px}.progress__bar{background:var(--surface-3);border-radius:999px;height:8px;overflow:hidden}.progress__bar span{border-radius:inherit;background:var(--accent,var(--brand));height:100%;display:block}.progress__label{color:var(--muted);margin-top:6px;font-size:.85rem}.steps{counter-reset:step;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:0;padding:0;list-style:none;display:grid}.steps li{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:22px 22px 20px 70px;position:relative}.steps li:before{counter-increment:step;content:counter(step);background:var(--brand);width:34px;height:34px;color:var(--on-brand);border-radius:50%;place-items:center;font-weight:800;display:grid;position:absolute;top:20px;left:20px}.steps h3{margin-bottom:4px}.steps p{color:var(--muted);margin:0;font-size:.95rem}.principles{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;display:grid}.principle{border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);padding:20px}.principle__icon{background:var(--brand-soft);width:40px;height:40px;color:var(--brand);border-radius:10px;place-items:center;margin-bottom:12px;display:grid}.principle h3{margin-bottom:4px}.principle p{color:var(--muted);margin:0;font-size:.95rem}.card-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;display:grid}.card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-sm);flex-direction:column;transition:transform .15s,box-shadow .15s,border-color .15s;display:flex;position:relative;overflow:hidden}.card__link{color:inherit;text-decoration:none}.card__link:after{content:"";position:absolute;inset:0}.card__link:hover{color:inherit}.card__thumb{aspect-ratio:16/9;background:var(--accent-soft,var(--surface-2));color:var(--accent,var(--brand));border-bottom:1px solid var(--border)}.card__thumb svg{width:100%;height:100%}.card__thumb--shot{background:var(--plot-bg);overflow:hidden}.sim-shot{object-fit:cover;object-position:var(--shot-x,0%) var(--shot-y,40%);width:100%;height:100%;transform:scale(var(--shot-zoom,1.5));transform-origin:var(--shot-x,0%) var(--shot-y,40%);display:block}.sim-shot--dunkel{display:none}.sim-shot--art{object-position:center;transform-origin:50%;transform:none}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .sim-shot--hell{display:none}:root:not([data-theme=light]) .sim-shot--art{filter:brightness(.86)}:root:not([data-theme=light]) .sim-shot--dunkel{display:block}}:root[data-theme=dark] .sim-shot--hell{display:none}:root[data-theme=dark] .sim-shot--dunkel{display:block}:root[data-theme=dark] .sim-shot--art{filter:brightness(.86)}@media (prefers-reduced-motion:no-preference){.sim-shot{transition:transform .5s var(--ap-ease,ease)}.card--link:hover .sim-shot{transform:scale(calc(var(--shot-zoom,1.5) * 1.04))}.card--link:hover .sim-shot--art{transform:scale(1.04)}}.card__body{flex-direction:column;flex:1;gap:8px;padding:16px 18px 18px;display:flex}.card__title{margin:0;font-size:1.08rem}.card__text{color:var(--muted);margin:0;font-size:.93rem;line-height:1.5}.card__meta{flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:6px;display:flex}.card--planned{box-shadow:none;background:0 0;border-style:dashed}.card--planned .card__thumb{opacity:.55}.card--planned .card__title{color:var(--muted);font-weight:600}.subject-card{border-top:4px solid var(--accent);padding:24px}.subject-card__icon{background:var(--accent-soft);width:48px;height:48px;color:var(--accent);border-radius:12px;place-items:center;margin-bottom:14px;display:grid}.subject-card h3{font-size:1.35rem}.subject-card .progress{margin-top:auto;padding-top:16px}.planned-list{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.planned-list li{border:1px dashed var(--border-strong);color:var(--muted);border-radius:999px;align-items:center;gap:8px;padding:6px 12px;font-size:.9rem;display:inline-flex}.planned-list .badge{padding:0 7px;font-size:.72rem}.area-list{gap:18px;display:grid}.area-card{grid-template-columns:minmax(0,1fr) auto;gap:8px 24px;padding:22px 24px;display:grid}.area-card h3{margin:0;font-size:1.25rem}.area-card__main{align-items:flex-start;gap:16px;display:flex}.area-card__glyph{background:var(--accent-soft,var(--surface-2));width:56px;height:56px;color:var(--text);border-radius:14px;flex:none;place-items:center;display:grid}.area-glyph__accent{fill:var(--accent,var(--brand));opacity:.9}@media (width<=640px){.area-card__glyph{border-radius:12px;width:46px;height:46px}.area-card__glyph svg{width:32px;height:32px}}.area-card__topics{flex-wrap:wrap;grid-column:1/-1;gap:6px;margin:6px 0 0;padding:0;list-style:none;display:flex}.area-card__topics li{background:var(--surface-2);color:var(--muted);border-radius:999px;padding:2px 10px;font-size:.85rem}.area-card__side{text-align:right;flex-direction:column;align-items:end;gap:6px;display:flex}.area-card .progress{min-width:180px;margin:0}@media (width<=640px){.area-card{grid-template-columns:1fr}.area-card__side{text-align:left;align-items:start}}.topic{margin-top:36px}.topic__head{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px;display:flex}.topic__head h2{margin:0;font-size:1.35rem}.filter-bar{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:20px;display:flex}.filter-bar__label{color:var(--muted);font-size:.9rem;font-weight:600}.kmk{flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none;display:flex}.kmk li{border:1px solid var(--border);color:var(--muted);border-radius:999px;padding:2px 10px;font-size:.82rem}.kmk abbr{margin-right:4px;font-weight:700;text-decoration:none}.note{border-radius:var(--radius-sm);background:var(--surface-2);color:var(--muted);padding:14px 16px;font-size:.93rem}.note--warning{background:var(--warning-bg);color:var(--warning-text)}.grade-nav{flex-wrap:wrap;gap:6px;display:flex}.grade-nav__item{border:1px solid var(--border-strong);background:var(--surface);min-width:40px;height:40px;color:var(--text);font-variant-numeric:tabular-nums;border-radius:10px;place-items:center;padding:0 8px;font-weight:700;text-decoration:none;display:grid}.grade-nav__item:hover{border-color:var(--accent,var(--brand));color:var(--accent,var(--brand))}.grade-nav__item[aria-current=page]{background:var(--accent,var(--brand));border-color:var(--accent,var(--brand));color:var(--on-brand)}.lp-entry{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);gap:10px;margin:8px 0 16px;padding:20px 22px;display:grid}.lp-entry h2{margin:0;font-size:1.3rem}.lp-entry p{margin:0}.lp-entry__rows{grid-template-columns:max-content max-content 1fr;align-items:center;gap:12px 20px;margin-top:4px;display:grid}.lp-entry__row{display:contents}@media (width<=860px){.lp-entry__rows{display:block}.lp-entry__row{border-top:1px solid var(--border);gap:10px;padding:14px 0;display:grid}.lp-entry__row:last-child{padding-bottom:0}}.lp-entry__label{font-weight:700}.lp-note{width:fit-content;max-width:75ch;margin:4px 0 20px}.lp-unit{margin-top:40px;padding-top:8px}.lp-unit h2{flex-wrap:wrap;align-items:baseline;gap:4px 12px;font-size:clamp(1.25rem,1.1rem + .6vw,1.5rem);display:flex}.lp-code{color:var(--accent,var(--brand));font-variant-numeric:tabular-nums;white-space:nowrap;font-size:.8em;font-weight:800}.lp-summary{max-width:75ch;color:var(--muted)}.lp-part{border-left:3px solid var(--border);margin:22px 0 0;padding-left:18px}.lp-part h3{flex-wrap:wrap;align-items:baseline;gap:4px 10px;margin-bottom:6px;display:flex}.lp-sims{gap:12px;display:grid}.lp-none{font-size:.92rem;font-style:italic}.lp-grades{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;display:grid}.lp-grade{padding:20px 22px}.lp-grade h2{margin:0 0 10px;font-size:1.25rem}.lp-grade h2 a{color:var(--text);text-decoration:none}.lp-grade h2 a:hover{color:var(--accent,var(--brand))}.lp-grade__units{gap:6px;margin:0 0 14px;padding:0;font-size:.93rem;list-style:none;display:grid}.lp-grade__units a{color:var(--text);text-decoration:none}.lp-grade__units a:hover{color:var(--accent,var(--brand));text-decoration:underline}.lp-grade .progress{margin-top:auto}.catalog-filters{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);grid-template-columns:minmax(200px,2fr) repeat(2,minmax(160px,1fr)) auto;align-items:end;gap:12px;margin-bottom:24px;padding:16px;display:grid}.field{color:var(--muted);flex-direction:column;gap:4px;font-size:.88rem;font-weight:600;display:flex}.input,.select{border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);width:100%;min-height:42px;color:var(--text);font:inherit;padding:8px 12px;font-size:1rem;font-weight:400}@media (width<=760px){.catalog-filters{grid-template-columns:1fr 1fr}.catalog-filters .field--search{grid-column:1/-1}}.result-count{color:var(--muted);margin-bottom:14px;font-size:.9rem}.prose{max-width:72ch}.prose h2{margin-top:1.8em;padding-top:.2em}.prose h3{margin-top:1.5em}.prose ul,.prose ol{margin:0 0 1em;padding-left:1.4em}.prose li{margin-bottom:.35em}.prose li::marker{color:var(--muted)}.prose blockquote{border-left:4px solid var(--brand);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:var(--brand-soft);margin:1.2em 0;padding:12px 18px}.prose blockquote p:last-child{margin:0}.prose{min-width:0}.prose table{border-collapse:collapse;max-width:100%;margin:1em 0 1.4em;font-size:.95rem;display:block;overflow-x:auto}.prose th,.prose td{border-bottom:1px solid var(--border);text-align:left;padding:8px 10px}.prose th{color:var(--muted);font-weight:650}.prose code{background:var(--surface-2);font-family:var(--font-mono);border-radius:5px;padding:1px 5px;font-size:.9em}.prose details{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);margin:.8em 0 1.2em}.prose summary{cursor:pointer;color:var(--brand);padding:10px 14px;font-weight:650}.prose details[open] summary{border-bottom:1px solid var(--border)}.prose details>:not(summary){margin-inline:14px}.prose details>:last-child{margin-bottom:12px}.prose details>:nth-child(2){margin-top:12px}.prose a[href^=\?]{border:1px solid var(--brand);white-space:nowrap;border-radius:999px;align-items:center;gap:4px;padding:1px 10px;font-size:.9em;font-weight:600;text-decoration:none;display:inline-flex}.prose a[href^=\?]:before{content:"▶";font-size:.7em}.prose a[href^=\?]:hover{background:var(--brand);color:var(--on-brand)}.math-display{margin:1em 0;padding-block:4px;overflow:auto hidden}.katex{font-size:1.08em}.sim-page__material{grid-template-columns:minmax(0,1fr) 280px;gap:48px;margin-top:40px;display:grid}.sim-page__aside{flex-direction:column;gap:18px;display:flex}.aside-box{top:calc(var(--header-h) + 16px);border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:18px;font-size:.92rem;position:sticky}.aside-box h2{margin-bottom:10px;font-size:1rem}.aside-box ul{margin:0;padding:0;list-style:none}.aside-box li+li{margin-top:6px}.aside-box a{text-decoration:none}.aside-box a:hover{text-decoration:underline}.aside-box dl{gap:2px 0;margin:0;display:grid}.aside-box dt{color:var(--muted);text-transform:uppercase;letter-spacing:.03em;margin-top:8px;font-size:.8rem;font-weight:700}.aside-box dd{margin:0}.aside-box .kmk{margin-top:4px}@media (width<=1000px){.sim-page__material{grid-template-columns:minmax(0,1fr);gap:24px}.aside-box{position:static}.sim-page__aside{order:-1}.aside-box--toc{display:none}}.sim{--sim-aspect:1.6;--sim-aspect-narrow:1.05;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow);position:relative}.sim__layout{grid-template-columns:minmax(0,1fr) 340px;display:grid}.sim__main{flex-direction:column;gap:10px;min-width:0;padding:12px;display:flex}.sim__stage{width:100%;aspect-ratio:var(--sim-aspect);background:var(--plot-bg);box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--border) 60%, transparent);touch-action:none;border:0;border-radius:14px;position:relative;overflow:hidden}.sim__keyfocus{z-index:2;border:3px solid var(--focus);box-shadow:0 0 0 2px var(--plot-bg);pointer-events:none;border-radius:8px;position:absolute}.sim-canvas{touch-action:none;-webkit-user-select:none;user-select:none;position:absolute;inset:0}.sim__status{color:var(--muted);text-align:center;place-items:center;margin:0;padding:24px;display:grid;position:absolute;inset:0}.sim__status--error{color:var(--physics);font-weight:600}.sim__actions{flex-wrap:wrap;gap:8px;display:flex}.sim__actions .btn{min-height:44px;padding-inline:18px}.sim .btn:disabled,.sim .btn--primary:disabled{opacity:1;background:var(--surface-2);border:1px dashed var(--border-strong);color:var(--muted);box-shadow:none}@media (width<=560px){.sim__actions{grid-template-columns:1fr 1fr;display:grid}.sim__actions .btn{width:100%;min-height:42px;padding-inline:10px}.sim__actions .btn--primary:first-child,.sim__actions .btn:only-child{grid-column:1/-1}}.sim__toolbar{flex-wrap:wrap;justify-content:space-between;gap:8px;display:flex}.sim__toolbar-group{flex-wrap:wrap;gap:6px;display:flex}.sim__hint{color:var(--muted);align-items:baseline;gap:6px;margin:0;font-size:.82rem;display:flex}.sim__hint:before{content:"ⓘ";opacity:.7;flex:none}.sim__toolbar{border-top:1px solid color-mix(in srgb, var(--border) 55%, transparent);padding-top:4px}.sim__toolbar .btn:not(.btn--primary){min-height:36px;box-shadow:none;color:var(--muted);background:0 0;border-color:#0000;padding-inline:10px}.sim__toolbar .btn:not(.btn--primary):hover,.sim__toolbar .btn:not(.btn--primary):focus-visible{background:var(--surface-2);color:var(--text)}.sim__panel{border-left:1px solid var(--border);background:var(--surface);border-radius:0 var(--radius-lg) var(--radius-lg) 0;min-width:0;max-height:calc(100vh - var(--header-h) - 24px);flex-direction:column;gap:18px;padding:18px;display:flex;overflow-y:auto}.sim__panel-title{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin:0 0 8px;font-size:.78rem;font-weight:800;display:block}.sim-tabs{z-index:2;border-bottom:1px solid var(--border);background:var(--surface);gap:2px;margin:-18px -18px 0;padding:8px 10px 0;display:flex;position:sticky;top:-18px}.sim-tabs__tab{min-width:0;min-height:40px;color:var(--muted);font:inherit;white-space:nowrap;cursor:pointer;background:0 0;border:0;border-bottom:3px solid #0000;flex:auto;justify-content:center;align-items:center;gap:6px;margin-bottom:-1px;padding:6px;font-size:.86rem;font-weight:700;display:inline-flex}.sim-tabs__tab:hover{color:var(--text)}.sim-tabs__tab[aria-selected=true]{border-bottom-color:var(--brand);color:var(--text)}.sim-tabs__count{background:var(--surface-2);min-width:20px;color:var(--muted);font-variant-numeric:tabular-nums;text-align:center;border-radius:999px;padding:1px 6px;font-size:.75rem}.sim-tabpanel{min-width:0}.preset-list{flex-direction:column;gap:2px;display:flex}.preset{border-radius:var(--radius-sm);width:100%;min-height:40px;color:var(--text);font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:10px;padding:7px 10px;font-size:.92rem;line-height:1.3;display:flex}.preset:before{content:"";border:2px solid var(--border-strong);border-radius:50%;flex:none;width:8px;height:8px}.preset:hover:not(:disabled){background:var(--surface-2)}.preset[aria-pressed=true]{background:var(--brand-soft);color:var(--brand-strong);font-weight:650}.preset[aria-pressed=true]:before{border-color:var(--brand);background:var(--brand)}.preset:disabled{opacity:.5;cursor:not-allowed}.preset-list__more{color:var(--brand);font:inherit;cursor:pointer;background:0 0;border:0;margin-top:6px;padding:6px 10px;font-size:.88rem;font-weight:650}.preset-list__more:hover{text-decoration:underline}.sim__lock{border-radius:var(--radius-sm);background:var(--warning-bg);color:var(--warning-text);justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;font-size:.9rem;display:flex}.sim__lock .btn{min-height:32px;padding:4px 10px;font-size:.85rem}[data-action=play].is-playing{background:var(--surface);color:var(--brand)}[data-action=play] .icon-pause,[data-action=play].is-playing .icon-play{display:none}[data-action=play].is-playing .icon-pause{display:block}@media (width<=1100px){.sim__layout{grid-template-columns:minmax(0,1fr) 300px}}@media (width<=860px){.sim__layout{grid-template-columns:1fr}.sim__panel{border-left:0;border-top:1px solid var(--border);border-radius:0 0 var(--radius-lg) var(--radius-lg);max-height:none;overflow-y:visible}.sim-tabs{top:var(--header-h)}}@media (width<=640px){.sim__stage{aspect-ratio:var(--sim-aspect-narrow)}.sim__main{padding:8px}.sim__toolbar .btn [data-label]{display:none}.sim__toolbar .btn{min-width:40px;padding-inline:10px}}.sim--fullscreen{z-index:200;border:0;border-radius:0;flex-direction:column;font-size:1.1rem;display:flex;position:fixed;inset:0}.sim:fullscreen{width:100vw;height:100vh}.sim--fullscreen .sim__layout{flex:1;grid-template-columns:minmax(0,1fr) 360px;min-height:0}.sim--fullscreen .sim__main{min-height:0}.sim--fullscreen .sim__stage{aspect-ratio:auto;flex:1;min-height:0}.sim--fullscreen .sim__panel{border-radius:0;max-height:none}@media (width<=860px){.sim--fullscreen .sim__layout{grid-template-rows:minmax(0,1fr) auto;grid-template-columns:1fr}.sim--fullscreen .sim__panel{max-height:40vh;overflow-y:auto}}.has-maximized-sim body{overflow:hidden}.plot-controls{z-index:2;flex-direction:column;gap:4px;display:flex;position:absolute}.plot-controls__btn{border:1px solid var(--border-strong);background:color-mix(in srgb, var(--surface) 92%, transparent);width:34px;height:34px;color:var(--text);cursor:pointer;box-shadow:var(--shadow-sm);border-radius:8px;place-items:center;padding:0;display:grid}.plot-controls__btn:hover{background:var(--surface-2)}.ctl-group{border:0;flex-direction:column;gap:14px;min-width:0;margin:0;padding:0;display:flex}.ctl-group+.ctl-group{margin-top:14px}.ctl-group[role=group]{border:1px solid var(--border);border-radius:var(--radius-sm);gap:0}.ctl-group[role=group]+.ctl-group[role=group]{margin-top:8px}.ctl-group__toggle{border-radius:inherit;width:100%;min-height:44px;color:var(--text);font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:10px;padding:8px 12px;display:flex}.ctl-group__toggle:hover{background:var(--surface-2)}.ctl-group__title{max-width:70%;color:var(--text);flex:none;font-size:.93rem;font-weight:750}.ctl-group__summary{min-width:0;color:var(--muted);font-variant-numeric:tabular-nums;text-align:right;text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:.82rem;overflow:hidden}.ctl-group.is-open .ctl-group__summary{visibility:hidden}.ctl-group__chevron{border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);flex:none;width:8px;height:8px;margin:0 2px 3px 0;transition:transform .15s;transform:rotate(45deg)}.ctl-group.is-open .ctl-group__chevron{margin-bottom:-3px;transform:rotate(-135deg)}.ctl-group__body{flex-direction:column;gap:12px;padding:4px 12px 14px;display:flex}.ctl-group__body[hidden]{display:none}.ctl__info{border:1.5px solid var(--border-strong);width:22px;height:22px;color:var(--muted);cursor:pointer;vertical-align:middle;background:0 0;border-radius:50%;flex:none;place-items:center;margin:0 auto 0 6px;padding:0;font:italic 700 .75rem/1 Georgia,serif;display:inline-grid}.ctl__info:hover,.ctl__info[aria-expanded=true]{border-color:var(--brand);color:var(--brand)}.ctl__head--switch{justify-content:flex-start;margin:0}legend .ctl__info{margin-left:8px}.ctl{border:0;min-width:0;margin:0;padding:0}.ctl__head{justify-content:space-between;align-items:center;gap:10px;margin-bottom:4px;display:flex}.ctl__label{flex:auto;min-width:0;padding:0;font-size:.93rem;font-weight:600;line-height:1.3}.ctl__value{font-variant-numeric:tabular-nums;color:var(--brand);white-space:nowrap;font-weight:700}.ctl__number-wrap{flex:none;align-items:center;gap:4px;display:inline-flex}.ctl__number{width:max(72px, calc(var(--ctl-chars,4) * 1ch + 22px));border:1px solid var(--border-strong);background:var(--surface);min-height:32px;color:var(--text);font:inherit;font-variant-numeric:tabular-nums;text-align:right;border-radius:7px;padding:4px 8px;font-size:.95rem;font-weight:650}.ctl__number:disabled{opacity:.6}.ctl__text{border:1px solid var(--border-strong);background:var(--surface);width:100%;min-height:40px;color:var(--text);font:inherit;letter-spacing:.01em;border-radius:8px;padding:6px 10px;font-size:1.05rem;font-weight:600}.ctl__text:disabled{opacity:.6}.ctl__unit{color:var(--muted);font-size:.85rem}.ctl__help{color:var(--muted);margin:4px 0 0;font-size:.82rem;line-height:1.4}.ctl__range{--fill:50%;-webkit-appearance:none;appearance:none;cursor:pointer;background:0 0;width:100%;height:28px;margin:0}.ctl__range:disabled{cursor:not-allowed;opacity:.55}.ctl__range::-webkit-slider-runnable-track{background:linear-gradient(to right, var(--brand) var(--fill), var(--surface-3) var(--fill));border-radius:999px;height:6px}.ctl__range::-moz-range-track{background:var(--surface-3);border-radius:999px;height:6px}.ctl__range::-moz-range-progress{background:var(--brand);border-radius:999px;height:6px}.ctl__range::-webkit-slider-thumb{-webkit-appearance:none;border:3px solid var(--brand);background:var(--surface);width:22px;height:22px;box-shadow:var(--shadow-sm);border-radius:50%;margin-top:-8px}.ctl__range::-moz-range-thumb{border:3px solid var(--brand);background:var(--surface);border-radius:50%;width:16px;height:16px}.ctl__range:focus-visible{outline:none}.ctl__range:focus-visible::-webkit-slider-thumb{outline:3px solid var(--focus);outline-offset:2px}.ctl__range:focus-visible::-moz-range-thumb{outline:3px solid var(--focus);outline-offset:2px}.switch{cursor:pointer;align-items:center;gap:10px;font-size:.93rem;line-height:1.3;display:flex}.switch__input{opacity:0;width:1px;height:1px;position:absolute}.switch__track{background:var(--surface-3);border:1px solid var(--border-strong);border-radius:999px;flex:none;width:40px;height:24px;transition:background-color .15s;position:relative}.switch__track:after{content:"";background:var(--surface);border-radius:50%;width:18px;height:18px;transition:transform .15s;position:absolute;top:2px;left:2px;box-shadow:0 1px 3px #00000040}.switch__input:checked+.switch__track{background:var(--brand);border-color:var(--brand)}.switch__input:checked+.switch__track:after{transform:translate(16px)}.switch__input:focus-visible+.switch__track{outline:3px solid var(--focus);outline-offset:2px}.switch__input:disabled+.switch__track,.switch__input:disabled~.switch__label{opacity:.55;cursor:not-allowed}.segmented{background:var(--surface-2);border-radius:10px;flex-wrap:wrap;gap:2px;margin-top:6px;padding:3px;display:flex}.segmented__option{flex:auto;position:relative}.segmented__input{opacity:0;width:1px;height:1px;position:absolute}.segmented__option>span{color:var(--muted);text-align:center;cursor:pointer;border-radius:8px;padding:6px 10px;font-size:.88rem;font-weight:650;display:block}.segmented__input:checked+span{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm)}.segmented__input:focus-visible+span{outline:3px solid var(--focus)}.segmented__input:disabled+span{cursor:not-allowed;opacity:.6}.readouts{gap:8px;margin:0;display:grid}.readout{border-radius:var(--radius-sm);background:var(--surface-2);padding:8px 12px}.readout dt{color:var(--muted);font-size:.78rem;font-weight:700}.readout dd{font-variant-numeric:tabular-nums;overflow-wrap:anywhere;margin:0;font-size:.98rem}.readout .frac{vertical-align:middle;flex-direction:column;align-items:center;margin:0 2px;font-size:.86em;line-height:1.15;display:inline-flex}.readout .frac>span:first-child{border-bottom:1px solid;padding:0 3px}.readout .mini-table{border-collapse:collapse;margin-top:4px;font-size:.9rem}.readout .mini-table th,.readout .mini-table td{text-align:right;white-space:nowrap;padding:2px 10px 2px 0}.readout .mini-table th{color:var(--muted);font-weight:650}.readout .mini-table tr.is-current td{color:var(--brand);font-weight:700}.readout__reveal{border:1px dashed var(--border-strong);color:var(--brand);font:inherit;cursor:pointer;background:0 0;border-radius:6px;padding:2px 10px;font-size:.85rem;font-weight:650}.share-dialog{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);width:min(520px,100vw - 32px);color:var(--text);box-shadow:var(--shadow-lg);padding:0}.share-dialog::backdrop{background:#0a0f198c}.share{flex-direction:column;gap:14px;padding:20px 22px 22px;display:flex}.share__head{justify-content:space-between;align-items:center;gap:12px;display:flex}.share__head h2{margin:0;font-size:1.3rem}.share__intro{color:var(--muted);margin:0;font-size:.93rem}.share__options{gap:10px;display:grid}.share__link{gap:8px;display:flex}.share__link .input{font-family:var(--font-mono);font-size:.85rem}.share__qr{align-items:center;gap:16px;display:flex}.share__qr-code{border:1px solid var(--border);background:#fff;border-radius:10px;flex:none;width:148px;height:148px;padding:6px}.qr-overlay{z-index:300;color:#111;cursor:zoom-out;background:#fff;flex-direction:column;justify-content:center;align-items:center;gap:20px;padding:24px;display:flex;position:fixed;inset:0}.qr-overlay__code{width:min(80vh,90vw);height:min(80vh,90vw)}.qr-overlay__url{max-width:90vw;font-family:var(--font-mono);word-break:break-all;text-align:center;font-size:clamp(.8rem,1.6vw,1.1rem)}@media print{.site-header,.site-footer,.sim__toolbar,.plot-controls,.sim-page__aside,.skip-link{display:none!important}.sim{box-shadow:none;break-inside:avoid}.prose details{border:0}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.sim--fullscreen .sim-tabs{top:-18px}:root{--ap-hairline:#10182817;--ap-hairline-strong:#10182824;--ap-glass:#fafbfdb8;--ap-glass-solid:#fafbfd;--ap-sidebar:#f8f9fc;--ap-seg-track:#eceff4;--ap-seg-on:#fff;--ap-seg-shadow:0 1px 2px #1018281f, 0 0 0 .5px #1018280f;--ap-elev-1:0 1px 2px #1018280a, 0 4px 14px #1018280d;--ap-elev-2:0 2px 6px #1018280f, 0 22px 44px -12px #10182833;--ap-elev-window:0 1px 2px #1018280d, 0 12px 28px -6px #1018281a, 0 40px 80px -24px #10182838;--ap-ease:cubic-bezier(.25, .8, .25, 1);--ap-radius-card:18px}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--ap-hairline:#ffffff14;--ap-hairline-strong:#ffffff24;--ap-glass:#0d1218b3;--ap-glass-solid:#0f151d;--ap-sidebar:#11171f;--ap-seg-track:#ffffff12;--ap-seg-on:#364256;--ap-seg-shadow:0 1px 2px #00000080, inset 0 .5px 0 #ffffff1a;--ap-elev-1:0 1px 2px #00000059, 0 6px 18px #00000038;--ap-elev-2:0 2px 6px #0006, 0 22px 44px -12px #0009;--ap-elev-window:0 1px 2px #0006, 0 12px 28px -6px #00000059, 0 40px 80px -24px #0009}}:root[data-theme=dark]{--ap-hairline:#ffffff14;--ap-hairline-strong:#ffffff24;--ap-glass:#0d1218b3;--ap-glass-solid:#0f151d;--ap-sidebar:#11171f;--ap-seg-track:#ffffff12;--ap-seg-on:#364256;--ap-seg-shadow:0 1px 2px #00000080, inset 0 .5px 0 #ffffff1a;--ap-elev-1:0 1px 2px #00000059, 0 6px 18px #00000038;--ap-elev-2:0 2px 6px #0006, 0 22px 44px -12px #0009;--ap-elev-window:0 1px 2px #0006, 0 12px 28px -6px #00000059, 0 40px 80px -24px #0009}.site-header{background:var(--ap-glass);backdrop-filter:saturate(180%)blur(20px);border-bottom-color:var(--ap-hairline)}@supports not (backdrop-filter:blur(1px)){.site-header{background:var(--ap-glass-solid)}}@media (prefers-reduced-transparency:reduce){.site-header{background:var(--ap-glass-solid);backdrop-filter:none}}.site-nav__link{transition:background-color .2s var(--ap-ease), color .2s var(--ap-ease);border-radius:999px}.lang-switch{background:var(--ap-seg-track);border:0;padding:2px}.lang-switch a{transition:background-color .2s var(--ap-ease), color .2s var(--ap-ease)}.lang-switch a:hover{color:var(--text)}.lang-switch a[aria-current=true]{background:var(--ap-seg-on);color:var(--text);box-shadow:var(--ap-seg-shadow)}.settings__panel{border-color:var(--ap-hairline);border-radius:var(--ap-radius-card);box-shadow:var(--ap-elev-2)}.sim{border-color:var(--ap-hairline-strong);box-shadow:var(--ap-elev-window)}.sim__panel{border-left-color:var(--ap-hairline);background:var(--ap-sidebar);border-radius:0 calc(var(--radius-lg) - 1px) calc(var(--radius-lg) - 1px) 0}.ctl-group[role=group]{border-color:var(--ap-hairline);background:var(--surface);border-radius:12px;box-shadow:0 1px 1px #10182808}.ctl-group__chevron{transition:transform .25s var(--ap-ease)}@media (width<=860px){.sim__panel{border-top-color:var(--ap-hairline);border-radius:0 0 calc(var(--radius-lg) - 1px) calc(var(--radius-lg) - 1px)}}.sim--fullscreen .sim__panel{border-radius:0}.sim-tabs{border-bottom:1px solid var(--ap-hairline);background:var(--ap-sidebar);gap:2px;padding:14px 17px 11px}.sim-tabs:before{content:"";z-index:-1;background:var(--ap-seg-track);border-radius:11px;position:absolute;inset:11px 14px 8px}.sim-tabs__tab{min-height:34px;transition:background-color .2s var(--ap-ease), color .2s var(--ap-ease), box-shadow .2s var(--ap-ease);border-bottom:0;border-radius:8px;margin-bottom:0;padding:4px 8px;font-size:.85rem;font-weight:650}.sim-tabs__tab[aria-selected=true]{background:var(--ap-seg-on);box-shadow:var(--ap-seg-shadow)}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .sim-tabs__tab[aria-selected=true]{box-shadow:var(--ap-seg-shadow), inset 0 -2px 0 var(--brand)}}:root[data-theme=dark] .sim-tabs__tab[aria-selected=true]{box-shadow:var(--ap-seg-shadow), inset 0 -2px 0 var(--brand)}.sim-tabs__tab:focus-visible{outline-offset:0}.sim-tabs__count{background:color-mix(in srgb, var(--muted) 14%, transparent)}.segmented{background:var(--ap-seg-track);border-radius:10px;padding:2px}.segmented__input:checked+span{background:var(--ap-seg-on);box-shadow:var(--ap-seg-shadow)}.segmented__option>span{transition:background-color .2s var(--ap-ease), color .2s var(--ap-ease)}.card{border-color:var(--ap-hairline);border-radius:var(--ap-radius-card);box-shadow:var(--ap-elev-1);transition:transform .35s var(--ap-ease), box-shadow .35s var(--ap-ease), border-color .35s var(--ap-ease)}.card--link:hover{box-shadow:var(--ap-elev-2);border-color:color-mix(in srgb, var(--accent,var(--brand)) 40%, transparent);transform:translateY(-3px)}.card__thumb{border-bottom-color:var(--ap-hairline)}.card--planned{border-color:var(--ap-hairline-strong);box-shadow:none}.lp-entry,.aside-box{border-color:var(--ap-hairline);border-radius:var(--ap-radius-card);box-shadow:var(--ap-elev-1)}@media (prefers-reduced-motion:reduce){.card--link:hover{transform:none}}.btn{border-color:var(--ap-hairline-strong);transition:background-color .2s var(--ap-ease), border-color .2s var(--ap-ease), color .2s var(--ap-ease), box-shadow .2s var(--ap-ease), transform .15s var(--ap-ease);border-radius:999px;box-shadow:0 1px 1px #1018280a}.btn--primary{background:linear-gradient(180deg, #ffffff1a, #fff0 55%), var(--brand);box-shadow:inset 0 1px 0 #ffffff2e, 0 1px 2px color-mix(in srgb, var(--brand) 35%, transparent), 0 4px 12px -4px color-mix(in srgb, var(--brand) 45%, transparent);border-color:#0000}.btn--primary:hover{background:linear-gradient(180deg, #ffffff1a, #fff0 55%), var(--brand-strong);border-color:#0000}.btn--ghost{box-shadow:none;border-color:#0000}[data-action=play].is-playing,[data-action=play].is-playing:hover{border-color:var(--ap-hairline-strong);background:var(--surface);color:var(--brand);box-shadow:0 1px 1px #1018280a}@media (prefers-reduced-motion:no-preference){.btn:active:not(:disabled){transform:scale(.97)}}.chip{border-color:var(--ap-hairline-strong);transition:background-color .2s var(--ap-ease), border-color .2s var(--ap-ease), color .2s var(--ap-ease)}.chip[aria-pressed=true]{border-color:var(--brand)}.contact{--contact-error:#b42318;grid-template-columns:minmax(0,1fr) 300px;align-items:start;gap:32px;margin-top:28px;display:grid}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .contact{--contact-error:#ff9b8f}}:root[data-theme=dark] .contact{--contact-error:#ff9b8f}@media (width<=900px){.contact{grid-template-columns:1fr}}.contact-form{flex-direction:column;gap:20px;display:flex}.contact-step{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);min-width:0;box-shadow:var(--shadow-sm);flex-direction:column;gap:18px;margin:0;padding:22px 24px 24px;display:flex}@media (width<=560px){.contact-step{padding:18px 16px 20px}}.contact-step__title{float:left;width:100%;color:var(--text);align-items:center;gap:10px;margin:0;padding:0;font-size:1.15rem;font-weight:700;display:flex}.contact-step__title+*{clear:both}.contact-step__num{background:var(--brand-soft);width:28px;height:28px;color:var(--brand-strong);border-radius:50%;place-items:center;font-size:.9rem;font-weight:800;display:inline-grid}.contact-field{flex-direction:column;gap:6px;min-width:0;display:flex}.contact-field__label{color:var(--text);font-size:.92rem;font-weight:650}.contact-field__opt,.contact-field__req{color:var(--muted);margin-left:4px;font-size:.8rem;font-weight:500}.contact-field__hint{color:var(--muted);margin:0;font-size:.86rem;font-weight:400;display:block}.contact-field__foot{min-height:1.2em;color:var(--muted);justify-content:space-between;gap:12px;font-size:.82rem;display:flex}.contact-field__count{font-variant-numeric:tabular-nums;margin-left:auto}.contact-field__error{color:var(--contact-error);font-size:.85rem;font-weight:600}.contact-field__error:empty{display:none}.contact-field.has-error .input{border-color:var(--contact-error);box-shadow:0 0 0 1px var(--contact-error)}.contact-textarea{resize:vertical;min-height:0;line-height:1.5}.contact-grid{grid-template-columns:1fr 1fr;gap:16px;display:grid}@media (width<=640px){.contact-grid{grid-template-columns:1fr}}.contact-types{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px;display:grid}.contact-type{cursor:pointer;position:relative}.contact-type input{opacity:0;pointer-events:none;position:absolute}.contact-type__body{border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);align-items:center;gap:10px;height:100%;padding:11px 12px;font-size:.93rem;font-weight:600;line-height:1.25;transition:border-color .15s,background-color .15s,color .15s;display:flex}.contact-type__icon{color:var(--muted);flex:none}.contact-type:hover .contact-type__body{border-color:var(--brand)}.contact-type input:checked+.contact-type__body{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-strong);box-shadow:inset 0 0 0 1px var(--brand)}.contact-type input:checked+.contact-type__body .contact-type__icon{color:var(--brand)}.contact-type input:focus-visible+.contact-type__body{outline:3px solid var(--focus);outline-offset:2px}.contact-rating{flex-wrap:wrap;align-items:center;gap:2px;display:flex}.contact-rating__star{cursor:pointer;border-radius:8px;place-items:center;width:38px;height:38px;display:inline-grid;position:relative}.contact-rating__star input{opacity:0;pointer-events:none;position:absolute}.contact-rating__star svg{fill:none;stroke:var(--border-strong);stroke-width:1.6px;stroke-linejoin:round;transition:fill .12s,stroke .12s}.contact-rating__star.is-on svg{fill:#f2b01e;stroke:#c98a06}.contact-rating__star:hover svg{stroke:#c98a06}.contact-rating__star:has(input:focus-visible){outline:3px solid var(--focus);outline-offset:1px}.contact-rating__value{color:var(--muted);margin-left:10px;font-size:.88rem}.contact-rating__clear{min-height:30px;padding:2px 10px}.contact-check{flex-direction:column;gap:8px;display:flex}.contact-check__row{cursor:pointer;align-items:flex-start;gap:10px;font-size:.95rem;display:flex}.contact-check__row input{width:18px;height:18px;accent-color:var(--brand);flex:none;margin-top:2px}.contact-check__row>span{flex-direction:column;gap:2px;display:flex}.contact-tech,.contact-preview{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2)}.contact-tech summary,.contact-preview summary{cursor:pointer;padding:10px 14px;font-size:.9rem;font-weight:650}.contact-tech pre,.contact-preview__body{font-family:var(--font-mono,ui-monospace, SFMono-Regular, Menlo, monospace);white-space:pre-wrap;word-break:break-word;color:var(--muted);margin:0;padding:0 14px 14px;font-size:.82rem;line-height:1.5;overflow-x:auto}.contact-preview__mail{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);margin:0 14px 14px}.contact-preview__subject{border-bottom:1px solid var(--border);margin:0;padding:10px 14px;font-size:.92rem;font-weight:700}.contact-preview__body{color:var(--text);padding:12px 14px}.contact-privacy{color:var(--muted);margin:0;font-size:.86rem}.contact-actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.contact-actions__reset{color:var(--muted);margin-left:auto}.contact-draft{min-height:1.2em;color:var(--muted);margin:0;font-size:.82rem}.contact-form__errors:focus{outline:none}.contact-aside{flex-direction:column;gap:16px;display:flex}@media (width>=901px){.contact-aside{top:calc(var(--header-h) + 16px);position:sticky}}.contact-aside .aside-box{position:static}.contact-aside p{overflow-wrap:anywhere;margin:0;font-size:.93rem}.contact-how{margin:0;padding-left:1.2em}.contact-how li+li{margin-top:6px}