:root {
    --foot:#0b1220;
    --thin:#dfe5f0;
    --deep:#ffffff;
    --shell:#ffb300;
    --card:#111111;
    --main:#d99700;
    --lead:#070b16;
    --round:#ffffff;
    --cool:color-mix(in srgb, var(--thin) 6%, var(--foot));
    --head:color-mix(in srgb, var(--thin) 3%, var(--foot));
    --core:color-mix(in srgb, var(--thin) 18%, var(--foot));
    --stroke:color-mix(in srgb, var(--thin) 68%, var(--foot));
    --edge:1160px;
    --base:78ch;
    --size:14px;
    --frame:8px;
    --depth:0 2px 4px rgb(0 0 0 / 10%), 0 16px 40px rgb(0 0 0 / 16%);
    --flow:clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
    --soft:clamp(1.15rem, 1.08rem + 0.35vw, 1.35rem);
    --brand:clamp(1.4rem, 1.24rem + 0.75vw, 1.95rem);
    --grid:clamp(1.95rem, 1.5rem + 1.9vw, 3.1rem);
}

*::before, *, *::after {
    box-sizing:border-box;
}

body {
    margin:0;
    background:var(--foot);
    color:var(--thin);
    font-family:system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    font-size:var(--flow);
    line-height:1.65;
    -webkit-text-size-adjust:100%;
    overflow-wrap:break-word;
}

img {
    max-width:100%;
    height:auto;
    display:block;
}

a {
    color:inherit;
}

.shell {
    position:sticky;
    top:0;
    z-index:20;
    background:var(--lead);
    color:var(--round);
}

.wrap__wide, .shell__meta, .crest__first, .strip__thumb, .circuit__top {
    width:min(100% - 2rem, var(--edge));
    margin-inline:auto;
}

.shell__meta {
    display:flex;
    align-items:center;
    gap:1.25rem;
    min-height:60px;
    padding-block:0.5rem;
}

.shelf {
    display:inline-flex;
    align-items:center;
    font-weight:700;
    font-size:1.05rem;
    letter-spacing:-0.01em;
    text-decoration:none;
    color:inherit;
    white-space:nowrap;
    flex-shrink:0;
}

.shelf img {
    height:32px;
    width:auto;
    object-fit:contain;
}

.element {
    display:flex;
    gap:0.15rem;
    margin-inline-end:auto;
    min-width:0;
}

.element a {
    padding:0.4rem 0.7rem;
    border-radius:var(--frame);
    text-decoration:none;
    color:inherit;
    opacity:0.82;
    white-space:nowrap;
    font-size:0.92rem;
}

.element a:hover {
    background:color-mix(in srgb, var(--round) 14%, transparent);
    opacity:1;
}

.element:empty {
    display:none;
}

.element:empty + .shell__large {
    margin-inline-start:auto;
}

.shell__large {
    display:flex;
    gap:0.5rem;
    flex-shrink:0;
}

.niche {
    display:none;
    position:relative;
    flex-shrink:0;
}

.niche__off {
    list-style:none;
    cursor:pointer;
    width:40px;
    height:40px;
    display:grid;
    place-items:center;
    border:1px solid color-mix(in srgb, var(--round) 40%, transparent);
    border-radius:var(--frame);
}

.niche__off::-webkit-details-marker {
    display:none;
}

.niche__off span, .niche__off span::after, .niche__off span::before {
    content:"";
    display:block;
    width:18px;
    height:2px;
    background:currentColor;
    border-radius:2px;
}

.niche__off span {
    position:relative;
}

.niche__off span::before {
    position:absolute;
    top:-6px;
}

.niche__off span::after {
    position:absolute;
    top:6px;
}

.niche__edge {
    position:absolute;
    inset-inline-end:0;
    top:calc(100% + 0.5rem);
    z-index:25;
    min-width:14rem;
    display:flex;
    flex-direction:column;
    gap:0.15rem;
    padding:0.5rem;
    background:var(--lead);
    border:1px solid color-mix(in srgb, var(--round) 20%, transparent);
    border-radius:var(--size);
    box-shadow:var(--depth);
}

.niche__edge a {
    padding:0.6rem 0.7rem;
    border-radius:var(--frame);
    text-decoration:none;
    color:var(--round);
}

.niche__edge a:hover {
    background:color-mix(in srgb, var(--round) 12%, transparent);
}

.niche__edge .slot {
    margin-top:0.4rem;
    color:var(--round);
    border-color:color-mix(in srgb, var(--round) 40%, transparent);
}

.shell .slot--off {
    color:inherit;
    border-color:color-mix(in srgb, var(--round) 45%, transparent);
}

.shell .slot--off:hover {
    background:color-mix(in srgb, var(--round) 14%, transparent);
}

.crest {
    background:color-mix(in srgb, var(--round) 8%, var(--lead));
    border-top:1px solid color-mix(in srgb, var(--round) 12%, transparent);
    font-size:0.9rem;
}

.crest__first {
    display:flex;
    gap:0.25rem;
    overflow-x:auto;
    scrollbar-width:none;
}

.crest__first::-webkit-scrollbar {
    display:none;
}

.crest a {
    padding:0.55rem 0.7rem;
    text-decoration:none;
    color:var(--round);
    opacity:0.8;
    white-space:nowrap;
    border-bottom:2px solid transparent;
}

.crest a:hover {
    opacity:1;
    border-bottom-color:var(--shell);
}

.slot {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:0.4rem;
    border:1px solid var(--alt, transparent);
    border-radius:var(--frame);
    padding:0.6rem 1.1rem;
    font:inherit;
    font-weight:700;
    line-height:1.2;
    text-align:center;
    cursor:pointer;
    text-decoration:none;
    background:var(--shell);
    color:var(--card);
    transition:background-color 0.15s ease, transform 0.05s ease;
}

.slot:hover {
    background:var(--main);
}

.slot:active {
    transform:translateY(1px);
}

.slot--off {
    background:transparent;
    color:var(--deep);
    border-color:var(--core);
}

.slot--off:hover {
    background:var(--cool);
}

.slot--bold {
    padding:0.9rem 1.8rem;
    font-size:var(--soft);
}

:focus-visible {
    outline:2px solid var(--shell);
    outline-offset:2px;
}

.plane h2, .level, .plane h3, .matrix h2, .circuit__off, .matrix h3 {
    color:var(--deep);
    line-height:1.18;
    letter-spacing:-0.02em;
    text-wrap:balance;
}

.level {
    font-size:var(--grid);
    margin:0 0 1rem;
}

.circuit__off {
    font-size:var(--brand);
    margin:0 0 1.25rem;
}

.plane h3, .matrix h3 {
    font-size:var(--soft);
    margin:1.75rem 0 0.5rem;
}

.matrix p, .plane p {
    margin:0 0 1rem;
}

.matrix > :last-child, .plane > :last-child {
    margin-bottom:0;
}

.plane a, .matrix a {
    color:color-mix(in srgb, var(--shell) 72%, var(--deep));
    text-underline-offset:3px;
}

.sheet {
    display:block;
}

.circuit {
    padding-block:clamp(2rem, 1.4rem + 2vw, 3.5rem);
    scroll-margin-top:72px;
}

.sheet > .circuit:not(.strip):nth-of-type(odd) {
    background:var(--cool);
}

.matrix {
    max-width:var(--base);
}

.circuit--list .matrix ul {
    list-style:none;
    padding:0;
    margin:0 0 1rem;
    display:grid;
    gap:0.5rem;
}

.circuit--list .matrix ul > li {
    position:relative;
    padding-inline-start:1.9rem;
    padding-block:0.15rem;
}

.circuit--list .matrix ul > li::before {
    content:"";
    position:absolute;
    inset-inline-start:0;
    top:0.55em;
    width:0.75rem;
    height:0.4rem;
    border-inline-start:2px solid var(--shell);
    border-bottom:2px solid var(--shell);
    transform:rotate(-45deg);
}

.circuit--list .matrix ol {
    counter-reset:step;
    list-style:none;
    padding:0;
    display:grid;
    gap:0.6rem;
}

.circuit--list .matrix ol > li {
    counter-increment:step;
    position:relative;
    padding-inline-start:2.6rem;
}

.circuit--list .matrix ol > li::before {
    content:counter(step);
    position:absolute;
    inset-inline-start:0;
    top:0;
    width:1.8rem;
    height:1.8rem;
    border-radius:50%;
    background:var(--shell);
    color:var(--card);
    font-weight:700;
    font-size:0.9rem;
    display:grid;
    place-items:center;
}

.note {
    margin:1.5rem 0;
    padding:1rem 1.25rem;
    border:1px solid var(--core);
    border-inline-start:3px solid var(--stroke);
    border-radius:0 var(--frame) var(--frame) 0;
    background:var(--cool);
    font-size:0.95rem;
}

.note p {
    margin:0 0 0.6rem;
}

.note > :last-child {
    margin-bottom:0;
}

.note strong {
    color:var(--deep);
}

.note--disclosure {
    color:var(--stroke);
    font-size:0.88rem;
    background:transparent;
    border-inline-start-color:var(--core);
}

.note--warning {
    border-inline-start-color:var(--shell);
    background:color-mix(in srgb, var(--shell) 10%, var(--foot));
}

.note--takeaway {
    font-variant-numeric:tabular-nums;
    border-inline-start-color:var(--deep);
}

.note--rg {
    border:1px solid color-mix(in srgb, var(--deep) 30%, var(--core));
    border-radius:var(--size);
    background:var(--head);
}

.note--rg a {
    font-weight:600;
}

.note--independent {
    margin-top:2.5rem;
    font-size:0.85rem;
    color:var(--stroke);
    background:transparent;
    border:0;
    border-top:1px solid var(--core);
    border-radius:0;
    padding:1rem 0 0;
}

.plane blockquote, .matrix blockquote {
    margin:1.25rem 0;
    padding:1rem 1.25rem;
    border-inline-start:3px solid var(--shell);
    border-radius:0 var(--frame) var(--frame) 0;
    background:var(--cool);
    color:var(--stroke);
    font-size:0.95rem;
}

.plane blockquote p, .matrix blockquote p {
    margin:0 0 0.6rem;
}

.matrix blockquote > :last-child, .plane blockquote > :last-child {
    margin-bottom:0;
}

.plane blockquote strong, .matrix blockquote strong {
    color:var(--deep);
}

.matrix hr {
    border:0;
    border-top:1px solid var(--core);
    margin:2rem 0;
}

.matrix table {
    width:100%;
    border-collapse:collapse;
    margin:0 0 1.25rem;
    font-size:0.95rem;
    background:var(--head);
    border:1px solid var(--core);
    border-radius:var(--size);
    overflow:hidden;
}

.circuit--table .matrix {
    max-width:none;
    overflow-x:auto;
}

.matrix td, .matrix th {
    border-bottom:1px solid var(--core);
    padding:0.7rem 0.9rem;
    text-align:start;
    vertical-align:top;
}

.matrix caption {
    caption-side:top;
    text-align:start;
    padding:0 0 0.6rem;
    font-weight:700;
    color:var(--deep);
}

.matrix thead th {
    background:color-mix(in srgb, var(--shell) 16%, var(--cool));
    color:var(--deep);
    font-weight:700;
    white-space:nowrap;
}

.matrix tbody tr:last-child td {
    border-bottom:0;
}

.matrix tbody tr:nth-child(even) {
    background:color-mix(in srgb, var(--thin) 3%, transparent);
}

.aside {
    display:grid;
    grid-template-columns:minmax(0, 1fr) minmax(200px, 260px);
    gap:2rem;
    align-items:start;
}

.aside__edge {
    border:1px solid var(--core);
    border-radius:var(--size);
    box-shadow:var(--depth);
    width:100%;
}

.strip {
    position:relative;
    padding-block:clamp(2rem, 1.2rem + 3vw, 4rem);
    background:var(--lead);
    isolation:isolate;
}

.strip::before {
    content:"";
    position:absolute;
    inset:0;
    z-index:-1;
    background-image:linear-gradient(rgb(0 0 0 / 72%), rgb(0 0 0 / 82%)), var(--bold, none);
    background-size:cover;
    background-position:center;
}

.block2__small {
    margin-top:1.25rem;
    text-align:center;
}

.block2__small a {
    color:var(--shell);
    font-weight:600;
}

.course {
    text-align:center;
}

.course__plain {
    font-size:clamp(3.5rem, 12vw, 6rem);
    line-height:1;
    font-weight:800;
    color:var(--shell);
    margin-bottom:0.5rem;
}

.course__image {
    max-width:46ch;
    margin-inline:auto;
    color:var(--stroke);
}

.course__stub {
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:0.75rem;
    margin-top:1.75rem;
}

@media (max-width: 700px) {
    .strip::before {
        background-image:linear-gradient(rgb(0 0 0 / 72%), rgb(0 0 0 / 82%)), var(--space, var(--bold, none));
    }

}
.strip__thumb {
    display:grid;
    grid-template-columns:minmax(0, 1fr) minmax(300px, 22rem);
    grid-template-areas:"title offer" "text offer";
    align-content:start;
    gap:0 2rem;
}

.strip .level {
    grid-area:title;
    color:#ffffff;
}

.strip__flat {
    grid-area:text;
    color:#f2f4f8;
    max-width:62ch;
}

.strip .plane {
    margin-bottom:1.5rem;
}

.strip__line {
    margin:0.75rem 0 0;
    font-size:0.85rem;
    opacity:0.75;
}

.lot {
    grid-area:offer;
    background:var(--foot);
    border:1px solid color-mix(in srgb, var(--shell) 40%, var(--core));
    border-radius:var(--size);
    box-shadow:var(--depth);
    overflow:hidden;
    align-self:start;
}

.lot .slot {
    width:100%;
}

.lot__light {
    display:grid;
    place-items:center;
    min-height:74px;
    padding:0.9rem 1.25rem;
    background:color-mix(in srgb, var(--shell) 22%, var(--foot));
    color:var(--deep);
    border-bottom:3px solid var(--shell);
}

.lot__light img {
    height:42px;
    width:auto;
    max-width:100%;
    object-fit:contain;
}

.lot__plain {
    display:flex;
    flex-direction:column;
    gap:0.6rem;
    padding:1.25rem;
    text-align:center;
}

.lot__meta {
    font-weight:800;
    font-size:var(--soft);
    color:inherit;
    text-align:center;
}

.lot__line {
    font-size:0.78rem;
    text-transform:uppercase;
    letter-spacing:0.09em;
    color:var(--stroke);
    margin:0;
}

.lot__cell {
    font-size:var(--brand);
    font-weight:800;
    line-height:1.15;
    color:var(--deep);
    margin:0;
    text-wrap:balance;
}

.lot__copy {
    font-size:0.8rem;
    color:var(--stroke);
    margin:0;
}

.stair {
    padding-block:1.5rem;
}

.deck {
    border:1px solid var(--core);
    border-radius:var(--size);
    background:var(--head);
    padding:0.5rem 1.1rem;
}

.deck__sub {
    cursor:pointer;
    font-weight:700;
    color:var(--deep);
    padding-block:0.6rem;
    list-style:none;
    display:flex;
    align-items:center;
    gap:0.5rem;
}

.deck__sub::-webkit-details-marker {
    display:none;
}

.deck__sub::before {
    content:"";
    width:0.5rem;
    height:0.5rem;
    border-inline-end:2px solid var(--shell);
    border-bottom:2px solid var(--shell);
    transform:rotate(45deg);
    transition:transform 0.15s ease;
}

.deck[open] .deck__sub::before {
    transform:rotate(-135deg);
}

.deck__last {
    columns:2;
    gap:2rem;
    margin:0 0 0.75rem;
    padding-inline-start:1.2rem;
    font-size:0.95rem;
}

.deck__last li {
    break-inside:avoid;
    margin-bottom:0.3rem;
}

.deck__last a {
    color:var(--stroke);
    text-underline-offset:3px;
}

.deck__last a:hover {
    color:var(--deep);
}

.module {
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(200px, 1fr));
    gap:1rem;
    list-style:none;
    margin:0;
    padding:0;
}

.piece {
    display:flex;
    flex-direction:column;
    background:var(--head);
    border:1px solid var(--core);
    border-radius:var(--size);
    overflow:hidden;
    transition:border-color 0.15s ease, transform 0.15s ease;
}

.piece:hover {
    border-color:var(--shell);
    transform:translateY(-2px);
}

.piece__large {
    aspect-ratio:4 / 3;
    overflow:hidden;
    background:var(--cool);
}

.piece__large img {
    width:100%;
    height:100%;
    object-fit:cover;
}

.piece__less {
    display:flex;
    flex-direction:column;
    gap:0.7rem;
    padding:0.85rem;
    margin-top:auto;
}

.piece__info {
    font-weight:600;
    color:var(--deep);
    line-height:1.3;
    margin:0;
}

.piece .slot {
    width:100%;
    padding-block:0.5rem;
    font-size:0.95rem;
}

.wrapper__bottom {
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(260px, 1fr));
    gap:1rem;
    list-style:none;
    margin:0;
    padding:0;
}

.stem {
    background:var(--foot);
    border:1px solid var(--core);
    border-radius:var(--size);
    padding:1.1rem 1.2rem;
}

.stem__less {
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:0.5rem;
    margin-bottom:0.4rem;
}

.stem__bottom {
    font-weight:700;
    color:var(--deep);
}

.stem__dark {
    color:var(--shell);
    font-weight:700;
    white-space:nowrap;
}

.stem__side {
    margin:0;
    color:var(--stroke);
}

.drawer__edge {
    display:grid;
    gap:0.5rem;
    max-width:var(--base);
}

.drawer__bottom {
    border:1px solid var(--core);
    border-radius:var(--frame);
    background:var(--head);
    padding:0 1.1rem;
}

.drawer__outer {
    cursor:pointer;
    font-weight:600;
    color:var(--deep);
    padding-block:0.9rem;
    list-style:none;
    display:flex;
    align-items:flex-start;
    gap:0.75rem;
}

.drawer__outer::-webkit-details-marker {
    display:none;
}

.drawer__outer::before {
    content:"+";
    color:var(--shell);
    font-weight:700;
    line-height:1.4;
    flex-shrink:0;
}

.drawer__bottom[open] .drawer__outer::before {
    content:"−";
}

.drawer__stub {
    color:var(--stroke);
    padding-bottom:1rem;
}

.drawer__stub > :first-child {
    margin-top:0;
}

.drawer__stub > :last-child {
    margin-bottom:0;
}

.board {
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:1rem 2rem;
    padding:1.5rem;
    border-radius:var(--size);
    background:color-mix(in srgb, var(--shell) 12%, var(--cool));
    border:1px solid color-mix(in srgb, var(--shell) 35%, var(--core));
}

.board__bottom {
    margin:0;
    font-size:var(--soft);
    font-weight:800;
    color:var(--deep);
    text-wrap:balance;
}

.board__edge {
    margin:0.25rem 0 0;
    font-size:0.82rem;
    color:var(--stroke);
}

.wrap {
    border-top:1px solid var(--core);
    background:var(--cool);
    color:var(--stroke);
    padding-block:2rem 6rem;
}

.wrap__wide {
    display:flex;
    flex-wrap:wrap;
    gap:1rem 1.5rem;
    align-items:center;
    padding-bottom:1.25rem;
    border-bottom:1px solid var(--core);
}

.wrap__soft {
    margin-inline-end:auto;
    font-weight:700;
    color:var(--deep);
}

.wrap__soft img {
    height:32px;
    width:auto;
    object-fit:contain;
}

.wrap__image {
    display:flex;
    flex-wrap:wrap;
    gap:0.25rem 1rem;
}

.wrap__image:empty {
    display:none;
}

.wrap__image a {
    text-decoration:none;
}

.wrap__image a:hover {
    text-decoration:underline;
}

.wrap__shut {
    width:min(100% - 2rem, var(--edge));
    margin-inline:auto;
    padding-top:1.25rem;
    font-size:0.85rem;
    display:grid;
    gap:0.5rem;
}

.wrap__shut p {
    margin:0;
}

.wrap__copy {
    display:flex;
    align-items:center;
    gap:0.5rem;
    flex-wrap:wrap;
}

.rack {
    display:inline-grid;
    place-items:center;
    min-width:2.1rem;
    height:2.1rem;
    border:2px solid currentColor;
    border-radius:50%;
    font-weight:800;
    font-size:0.78rem;
}

.leaf {
    position:fixed;
    inset-inline:0;
    bottom:0;
    z-index:30;
    display:flex;
    align-items:center;
    gap:1rem;
    padding:0.6rem 1rem calc(0.6rem + env(safe-area-inset-bottom));
    background:color-mix(in srgb, var(--shell) 14%, var(--lead));
    color:var(--round);
    border-top:1px solid color-mix(in srgb, var(--shell) 45%, transparent);
}

.leaf__bold {
    display:flex;
    flex-direction:column;
    min-width:0;
    line-height:1.25;
}

.leaf__meta {
    font-weight:800;
    color:var(--round);
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
}

.leaf__stub {
    font-size:0.75rem;
    opacity:0.7;
}

.leaf .slot {
    margin-inline-start:auto;
    flex-shrink:0;
}

@media (max-width: 960px) {
    .strip__thumb {
        grid-template-columns:1fr;
        grid-template-areas:"title" "offer" "text";
        gap:1.25rem;
    }

    .aside {
        grid-template-columns:1fr;
    }

    .aside__edge {
        max-width:260px;
        margin-inline:auto;
    }

}
@media (max-width: 700px) {
    .deck__last {
        columns:1;
    }

    .module {
        grid-template-columns:repeat(auto-fill, minmax(145px, 1fr));
        gap:0.75rem;
    }

}
@media (max-width: 640px) {
    .shell {
        position:static;
    }

    .shell__meta {
        flex-wrap:wrap;
        gap:0.5rem 0.75rem;
        padding-block:0.6rem;
    }

    .shell__meta {
        flex-wrap:nowrap;
    }

    .shell__large .slot--off, .crest, .element {
        display:none;
    }

    .element + .shell__large {
        margin-inline-start:auto;
    }

    .niche {
        display:block;
        order:3;
    }

    .shell__large {
        margin-inline-start:auto;
    }

    .shell__large .slot {
        padding:0.5rem 0.8rem;
        font-size:0.9rem;
    }

    .circuit {
        padding-block:1.75rem;
    }

    .lot__plain, .board {
        padding:1.15rem;
    }

    .board .slot--bold, .strip__flat .slot--bold {
        width:100%;
    }

    .leaf__stub {
        display:none;
    }

}
@media (prefers-reduced-motion: reduce) {
    *::before, * {
        transition:none !important;
    }

}