:root {
    --flow:#0b1220;
    --core:#dfe5f0;
    --wide:#fff;
    --band:#ffb300;
    --bold:#111;
    --head:#d99700;
    --frame:#070b16;
    --line:#fff;
    --plain:color-mix(in srgb, var(--core) 6%, var(--flow));
    --paper:color-mix(in srgb, var(--core) 3%, var(--flow));
    --lift:color-mix(in srgb, var(--core) 18%, var(--flow));
    --zone:color-mix(in srgb, var(--core) 68%, var(--flow));
    --base:1160px;
    --ink:78ch;
    --flat:14px;
    --space:8px;
    --cool:0 2px 4px rgb(0 0 0 / 10%), 0 16px 40px rgb(0 0 0 / 16%);
    --tile:clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
    --shell:clamp(1.15rem, 1.08rem + 0.35vw, 1.35rem);
    --thin:clamp(1.4rem, 1.24rem + 0.75vw, 1.95rem);
    --body:clamp(1.95rem, 1.5rem + 1.9vw, 3.1rem);
}
*::before, *, *::after {
    box-sizing:border-box;
}
body {
    margin:0;
    background:var(--flow);
    color:var(--core);
    font-family:system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    font-size:var(--tile);
    line-height:1.65;
    -webkit-text-size-adjust:100%;
    overflow-wrap:break-word;
}
img {
    max-width:100%;
    height:auto;
    display:block;
}
a {
    color:inherit;
}
.step {
    position:sticky;
    top:0;
    z-index:20;
    background:var(--frame);
    color:var(--line);
}
.weave-info, .step-top, .course-narrow, .band-link, .path-on {
    width:min(100% - 2rem, var(--base));
    margin-inline:auto;
}
.step-top {
    display:flex;
    align-items:center;
    gap:1.25rem;
    min-height:60px;
    padding-block:0.5rem;
}
.caption {
    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;
}
.caption img {
    height:32px;
    width:auto;
    object-fit:contain;
}
.tag {
    display:flex;
    gap:0.15rem;
    margin-inline-end:auto;
    min-width:0;
}
.tag a {
    padding:0.4rem 0.7rem;
    border-radius:var(--space);
    text-decoration:none;
    color:inherit;
    opacity:0.82;
    white-space:nowrap;
    font-size:0.92rem;
}
.tag a:hover {
    background:color-mix(in srgb, var(--line) 14%, transparent);
    opacity:1;
}
.tag:empty {
    display:none;
}
.tag:empty + .step-dark {
    margin-inline-start:auto;
}
.step-dark {
    display:flex;
    gap:0.5rem;
    flex-shrink:0;
}
.frame {
    display:none;
    position:relative;
    flex-shrink:0;
}
.frame-narrow {
    list-style:none;
    cursor:pointer;
    width:40px;
    height:40px;
    display:grid;
    place-items:center;
    border:1px solid color-mix(in srgb, var(--line) 40%, transparent);
    border-radius:var(--space);
}
.frame-narrow::-webkit-details-marker {
    display:none;
}
.frame-narrow span, .frame-narrow span::after, .frame-narrow span::before {
    content:"";
    display:block;
    width:18px;
    height:2px;
    background:currentColor;
    border-radius:2px;
}
.frame-narrow span {
    position:relative;
}
.frame-narrow span::before {
    position:absolute;
    top:-6px;
}
.frame-narrow span::after {
    position:absolute;
    top:6px;
}
.frame-soft {
    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(--frame);
    border:1px solid color-mix(in srgb, var(--line) 20%, transparent);
    border-radius:var(--flat);
    box-shadow:var(--cool);
}
.frame-soft a {
    padding:0.6rem 0.7rem;
    border-radius:var(--space);
    text-decoration:none;
    color:var(--line);
}
.frame-soft a:hover {
    background:color-mix(in srgb, var(--line) 12%, transparent);
}
.frame-soft .holder {
    margin-top:0.4rem;
    color:var(--line);
    border-color:color-mix(in srgb, var(--line) 40%, transparent);
}
.step .holder-info {
    color:inherit;
    border-color:color-mix(in srgb, var(--line) 45%, transparent);
}
.step .holder-info:hover {
    background:color-mix(in srgb, var(--line) 14%, transparent);
}
.path {
    background:color-mix(in srgb, var(--line) 8%, var(--frame));
    border-top:1px solid color-mix(in srgb, var(--line) 12%, transparent);
    font-size:0.9rem;
}
.path-on {
    display:flex;
    gap:0.25rem;
    overflow-x:auto;
    scrollbar-width:none;
}
.path-on::-webkit-scrollbar {
    display:none;
}
.path a {
    padding:0.55rem 0.7rem;
    text-decoration:none;
    color:var(--line);
    opacity:0.8;
    white-space:nowrap;
    border-bottom:2px solid transparent;
}
.path a:hover {
    opacity:1;
    border-bottom-color:var(--band);
}
.holder {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:0.4rem;
    border:1px solid var(--foot, transparent);
    border-radius:var(--space);
    padding:0.6rem 1.1rem;
    font:inherit;
    font-weight:700;
    line-height:1.2;
    text-align:center;
    cursor:pointer;
    text-decoration:none;
    background:var(--band);
    color:var(--bold);
    transition:background-color 0.15s ease, transform 0.05s ease;
}
.holder:hover {
    background:var(--head);
}
.holder:active {
    transform:translateY(1px);
}
.holder-info {
    background:transparent;
    color:var(--wide);
    border-color:var(--lift);
}
.holder-info:hover {
    background:var(--plain);
}
.holder-wide {
    padding:0.9rem 1.8rem;
    font-size:var(--shell);
}
:focus-visible {
    outline:2px solid var(--band);
    outline-offset:2px;
}
.weave-view, .shell h2, .shell h3, .route, .braid h2, .braid h3 {
    color:var(--wide);
    line-height:1.18;
    letter-spacing:-0.02em;
    text-wrap:balance;
}
.route {
    font-size:var(--body);
    margin:0 0 1rem;
}
.weave-view {
    font-size:var(--thin);
    margin:0 0 1.25rem;
}
.shell h3, .braid h3 {
    font-size:var(--shell);
    margin:1.75rem 0 0.5rem;
}
.shell p, .braid p {
    margin:0 0 1rem;
}
.braid > :last-child, .shell > :last-child {
    margin-bottom:0;
}
.braid a, .shell a {
    color:color-mix(in srgb, var(--band) 72%, var(--wide));
    text-underline-offset:3px;
}
.hall {
    display:block;
}
.weave {
    padding-block:clamp(2rem, 1.4rem + 2vw, 3.5rem);
    scroll-margin-top:72px;
}
.hall > .weave:not(.band):nth-of-type(odd) {
    background:var(--plain);
}
.shell {
    max-width:var(--ink);
}
.weave-list .shell ul {
    list-style:none;
    padding:0;
    margin:0 0 1rem;
    display:grid;
    gap:0.5rem;
}
.weave-list .shell ul > li {
    position:relative;
    padding-inline-start:1.9rem;
    padding-block:0.15rem;
}
.weave-list .shell 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(--band);
    border-bottom:2px solid var(--band);
    transform:rotate(-45deg);
}
.weave-list .shell ol {
    counter-reset:step;
    list-style:none;
    padding:0;
    display:grid;
    gap:0.6rem;
}
.weave-list .shell ol > li {
    counter-increment:step;
    position:relative;
    padding-inline-start:2.6rem;
}
.weave-list .shell 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(--band);
    color:var(--bold);
    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(--lift);
    border-inline-start:3px solid var(--zone);
    border-radius:0 var(--space) var(--space) 0;
    background:var(--plain);
    font-size:0.95rem;
}
.note p {
    margin:0 0 0.6rem;
}
.note > :last-child {
    margin-bottom:0;
}
.note strong {
    color:var(--wide);
}
.note--disclosure {
    color:var(--zone);
    font-size:0.88rem;
    background:transparent;
    border-inline-start-color:var(--lift);
}
.note--warning {
    border-inline-start-color:var(--band);
    background:color-mix(in srgb, var(--band) 10%, var(--flow));
}
.note--takeaway {
    font-variant-numeric:tabular-nums;
    border-inline-start-color:var(--wide);
}
.note--rg {
    border:1px solid color-mix(in srgb, var(--wide) 30%, var(--lift));
    border-radius:var(--flat);
    background:var(--paper);
}
.note--rg a {
    font-weight:600;
}
.note--independent {
    margin-top:2.5rem;
    font-size:0.85rem;
    color:var(--zone);
    background:transparent;
    border:0;
    border-top:1px solid var(--lift);
    border-radius:0;
    padding:1rem 0 0;
}
.braid blockquote, .shell blockquote {
    margin:1.25rem 0;
    padding:1rem 1.25rem;
    border-inline-start:3px solid var(--band);
    border-radius:0 var(--space) var(--space) 0;
    background:var(--plain);
    color:var(--zone);
    font-size:0.95rem;
}
.braid blockquote p, .shell blockquote p {
    margin:0 0 0.6rem;
}
.shell blockquote > :last-child, .braid blockquote > :last-child {
    margin-bottom:0;
}
.braid blockquote strong, .shell blockquote strong {
    color:var(--wide);
}
.shell hr {
    border:0;
    border-top:1px solid var(--lift);
    margin:2rem 0;
}
.shell table {
    width:100%;
    border-collapse:collapse;
    margin:0 0 1.25rem;
    font-size:0.95rem;
    background:var(--paper);
    border:1px solid var(--lift);
    border-radius:var(--flat);
    overflow:hidden;
}
.weave-table .shell {
    max-width:none;
    overflow-x:auto;
}
.shell th, .shell td {
    border-bottom:1px solid var(--lift);
    padding:0.7rem 0.9rem;
    text-align:start;
    vertical-align:top;
}
.shell caption {
    caption-side:top;
    text-align:start;
    padding:0 0 0.6rem;
    font-weight:700;
    color:var(--wide);
}
.shell thead th {
    background:color-mix(in srgb, var(--band) 16%, var(--plain));
    color:var(--wide);
    font-weight:700;
    white-space:nowrap;
}
.shell tbody tr:last-child td {
    border-bottom:0;
}
.shell tbody tr:nth-child(even) {
    background:color-mix(in srgb, var(--core) 3%, transparent);
}
.banner {
    display:grid;
    grid-template-columns:minmax(0, 1fr) minmax(200px, 260px);
    gap:2rem;
    align-items:start;
}
.banner-stub {
    border:1px solid var(--lift);
    border-radius:var(--flat);
    box-shadow:var(--cool);
    width:100%;
}
.band {
    position:relative;
    padding-block:clamp(2rem, 1.2rem + 3vw, 4rem);
    background:var(--frame);
    isolation:isolate;
}
.band::before {
    content:"";
    position:absolute;
    inset:0;
    z-index:-1;
    background-image:linear-gradient(rgb(0 0 0 / 72%), rgb(0 0 0 / 82%)), var(--warm, none);
    background-size:cover;
    background-position:center;
}
.chain-off {
    margin-top:1.25rem;
    text-align:center;
}
.chain-off a {
    color:var(--band);
    font-weight:600;
}
.bay {
    text-align:center;
}
.bay-bold {
    font-size:clamp(3.5rem, 12vw, 6rem);
    line-height:1;
    font-weight:800;
    color:var(--band);
    margin-bottom:0.5rem;
}
.bay-foot {
    max-width:46ch;
    margin-inline:auto;
    color:var(--zone);
}
.bay-figure {
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:0.75rem;
    margin-top:1.75rem;
}
@media (max-width: 700px) {
    .band::before {
        background-image:linear-gradient(rgb(0 0 0 / 72%), rgb(0 0 0 / 82%)), var(--depth, var(--warm, none));
    }
}
.band-link {
    display:grid;
    grid-template-columns:minmax(0, 1fr) minmax(300px, 22rem);
    grid-template-areas:"title offer" "text offer";
    align-content:start;
    gap:0 2rem;
}
.band .route {
    grid-area:title;
    color:#fff;
}
.band-small {
    grid-area:text;
    color:#f2f4f8;
    max-width:62ch;
}
.band .braid {
    margin-bottom:1.5rem;
}
.band-side {
    margin:0.75rem 0 0;
    font-size:0.85rem;
    opacity:0.75;
}
.box {
    grid-area:offer;
    background:var(--flow);
    border:1px solid color-mix(in srgb, var(--band) 40%, var(--lift));
    border-radius:var(--flat);
    box-shadow:var(--cool);
    overflow:hidden;
    align-self:start;
}
.box .holder {
    width:100%;
}
.box-shut {
    display:grid;
    place-items:center;
    min-height:74px;
    padding:0.9rem 1.25rem;
    background:color-mix(in srgb, var(--band) 22%, var(--flow));
    color:var(--wide);
    border-bottom:3px solid var(--band);
}
.box-shut img {
    height:42px;
    width:auto;
    max-width:100%;
    object-fit:contain;
}
.box-side {
    display:flex;
    flex-direction:column;
    gap:0.6rem;
    padding:1.25rem;
    text-align:center;
}
.box-wide {
    font-weight:800;
    font-size:var(--shell);
    color:inherit;
    text-align:center;
}
.box-small {
    font-size:0.78rem;
    text-transform:uppercase;
    letter-spacing:0.09em;
    color:var(--zone);
    margin:0;
}
.box-on {
    font-size:var(--thin);
    font-weight:800;
    line-height:1.15;
    color:var(--wide);
    margin:0;
    text-wrap:balance;
}
.box-alt {
    font-size:0.8rem;
    color:var(--zone);
    margin:0;
}
.level {
    padding-block:1.5rem;
}
.chunk {
    border:1px solid var(--lift);
    border-radius:var(--flat);
    background:var(--paper);
    padding:0.5rem 1.1rem;
}
.chunk-dark {
    cursor:pointer;
    font-weight:700;
    color:var(--wide);
    padding-block:0.6rem;
    list-style:none;
    display:flex;
    align-items:center;
    gap:0.5rem;
}
.chunk-dark::-webkit-details-marker {
    display:none;
}
.chunk-dark::before {
    content:"";
    width:0.5rem;
    height:0.5rem;
    border-inline-end:2px solid var(--band);
    border-bottom:2px solid var(--band);
    transform:rotate(45deg);
    transition:transform 0.15s ease;
}
.chunk[open] .chunk-dark::before {
    transform:rotate(-135deg);
}
.chunk-small {
    columns:2;
    gap:2rem;
    margin:0 0 0.75rem;
    padding-inline-start:1.2rem;
    font-size:0.95rem;
}
.chunk-small li {
    break-inside:avoid;
    margin-bottom:0.3rem;
}
.chunk-small a {
    color:var(--zone);
    text-underline-offset:3px;
}
.chunk-small a:hover {
    color:var(--wide);
}
.chip {
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(200px, 1fr));
    gap:1rem;
    list-style:none;
    margin:0;
    padding:0;
}
.wall {
    display:flex;
    flex-direction:column;
    background:var(--paper);
    border:1px solid var(--lift);
    border-radius:var(--flat);
    overflow:hidden;
    transition:border-color 0.15s ease, transform 0.15s ease;
}
.wall:hover {
    border-color:var(--band);
    transform:translateY(-2px);
}
.wall-side {
    aspect-ratio:4 / 3;
    overflow:hidden;
    background:var(--plain);
}
.wall-side img {
    width:100%;
    height:100%;
    object-fit:cover;
}
.wall-thumb {
    display:flex;
    flex-direction:column;
    gap:0.7rem;
    padding:0.85rem;
    margin-top:auto;
}
.wall-light {
    font-weight:600;
    color:var(--wide);
    line-height:1.3;
    margin:0;
}
.wall .holder {
    width:100%;
    padding-block:0.5rem;
    font-size:0.95rem;
}
.footer2-bottom {
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(260px, 1fr));
    gap:1rem;
    list-style:none;
    margin:0;
    padding:0;
}
.ridge {
    background:var(--flow);
    border:1px solid var(--lift);
    border-radius:var(--flat);
    padding:1.1rem 1.2rem;
}
.ridge-thumb {
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:0.5rem;
    margin-bottom:0.4rem;
}
.ridge-alt {
    font-weight:700;
    color:var(--wide);
}
.ridge-bottom {
    color:var(--band);
    font-weight:700;
    white-space:nowrap;
}
.ridge-sub {
    margin:0;
    color:var(--zone);
}
.unit-open {
    display:grid;
    gap:0.5rem;
    max-width:var(--ink);
}
.unit-thumb {
    border:1px solid var(--lift);
    border-radius:var(--space);
    background:var(--paper);
    padding:0 1.1rem;
}
.unit-meta {
    cursor:pointer;
    font-weight:600;
    color:var(--wide);
    padding-block:0.9rem;
    list-style:none;
    display:flex;
    align-items:flex-start;
    gap:0.75rem;
}
.unit-meta::-webkit-details-marker {
    display:none;
}
.unit-meta::before {
    content:"+";
    color:var(--band);
    font-weight:700;
    line-height:1.4;
    flex-shrink:0;
}
.unit-thumb[open] .unit-meta::before {
    content:"−";
}
.unit-bold {
    color:var(--zone);
    padding-bottom:1rem;
}
.unit-bold > :first-child {
    margin-top:0;
}
.unit-bold > :last-child {
    margin-bottom:0;
}
.node {
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:1rem 2rem;
    padding:1.5rem;
    border-radius:var(--flat);
    background:color-mix(in srgb, var(--band) 12%, var(--plain));
    border:1px solid color-mix(in srgb, var(--band) 35%, var(--lift));
}
.node-line {
    margin:0;
    font-size:var(--shell);
    font-weight:800;
    color:var(--wide);
    text-wrap:balance;
}
.node-alt {
    margin:0.25rem 0 0;
    font-size:0.82rem;
    color:var(--zone);
}
.course {
    border-top:1px solid var(--lift);
    background:var(--plain);
    color:var(--zone);
    padding-block:2rem 6rem;
}
.course-narrow {
    display:flex;
    flex-wrap:wrap;
    gap:1rem 1.5rem;
    align-items:center;
    padding-bottom:1.25rem;
    border-bottom:1px solid var(--lift);
}
.course-first {
    margin-inline-end:auto;
    font-weight:700;
    color:var(--wide);
}
.course-first img {
    height:32px;
    width:auto;
    object-fit:contain;
}
.course-link {
    display:flex;
    flex-wrap:wrap;
    gap:0.25rem 1rem;
}
.course-link:empty {
    display:none;
}
.course-link a {
    text-decoration:none;
}
.course-link a:hover {
    text-decoration:underline;
}
.course-open {
    width:min(100% - 2rem, var(--base));
    margin-inline:auto;
    padding-top:1.25rem;
    font-size:0.85rem;
    display:grid;
    gap:0.5rem;
}
.course-open p {
    margin:0;
}
.course-thumb {
    display:flex;
    align-items:center;
    gap:0.5rem;
    flex-wrap:wrap;
}
.plate {
    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;
}
.arc {
    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(--band) 14%, var(--frame));
    color:var(--line);
    border-top:1px solid color-mix(in srgb, var(--band) 45%, transparent);
}
.arc-first {
    display:flex;
    flex-direction:column;
    min-width:0;
    line-height:1.25;
}
.arc-alt {
    font-weight:800;
    color:var(--line);
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
}
.arc-light {
    font-size:0.75rem;
    opacity:0.7;
}
.arc .holder {
    margin-inline-start:auto;
    flex-shrink:0;
}
@media (max-width: 960px) {
    .band-link {
        grid-template-columns:1fr;
        grid-template-areas:"title" "offer" "text";
        gap:1.25rem;
    }
    .banner {
        grid-template-columns:1fr;
    }
    .banner-stub {
        max-width:260px;
        margin-inline:auto;
    }
}
@media (max-width: 700px) {
    .chunk-small {
        columns:1;
    }
    .chip {
        grid-template-columns:repeat(auto-fill, minmax(145px, 1fr));
        gap:0.75rem;
    }
}
@media (max-width: 640px) {
    .step {
        position:static;
    }
    .step-top {
        flex-wrap:wrap;
        gap:0.5rem 0.75rem;
        padding-block:0.6rem;
    }
    .step-top {
        flex-wrap:nowrap;
    }
    .path, .step-dark .holder-info, .tag {
        display:none;
    }
    .tag + .step-dark {
        margin-inline-start:auto;
    }
    .frame {
        display:block;
        order:3;
    }
    .step-dark {
        margin-inline-start:auto;
    }
    .step-dark .holder {
        padding:0.5rem 0.8rem;
        font-size:0.9rem;
    }
    .weave {
        padding-block:1.75rem;
    }
    .box-side, .node {
        padding:1.15rem;
    }
    .node .holder-wide, .band-small .holder-wide {
        width:100%;
    }
    .arc-light {
        display:none;
    }
}
@media (prefers-reduced-motion: reduce) {
    *::before, * {
        transition:none !important;
    }
}