@font-face { font-family:'IBM Plex Sans'; font-weight:400; src:url('../fonts/IBMPlexSans-Regular.woff2') format('woff2'); font-display:swap; }
@font-face { font-family:'IBM Plex Sans'; font-weight:700; src:url('../fonts/IBMPlexSans-Bold.woff2') format('woff2'); font-display:swap; }
@font-face { font-family:'IBM Plex Sans Light'; src:url('../fonts/IBMPlexSans-Light.woff2') format('woff2'); font-display:swap; }

:root{
    --panel:rgba(7,7,8,.9); --panel-solid:#0a0a0c; --inset:#101012;
    --bd-hi:#4a4a48; --bd:#2c2c2a; --bd-lo:#4a4a48;
    --title:#bdbcb0; --text:#c9c6ba; --dim:#7c7b6f; --accent:#cf8c34;
    --teal:#6fbcc6; --teal-dim:#3d6b71;
    --site-width:min(96vw, max(70vw, 900px), 1800px); --rail:206px; --aside:226px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'IBM Plex Sans', system-ui, sans-serif;
    line-height: 1.75;
    min-height: 100vh;
    overflow-x: hidden;
    color: var(--text);
    background: linear-gradient(to bottom, #000011 0%, #0a0a12 60%, #000 100%);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 70%;
    background-image:
        radial-gradient(1px 1px at 25px 35px, #fff, transparent),
        radial-gradient(2px 2px at 75px 25px, #fff, transparent),
        radial-gradient(1px 1px at 125px 55px, #fff, transparent),
        radial-gradient(1px 1px at 175px 15px, #fff, transparent),
        radial-gradient(2px 2px at 225px 45px, #fff, transparent),
        radial-gradient(1px 1px at 275px 25px, #fff, transparent),
        radial-gradient(2px 2px at 325px 55px, #fff, transparent),
        radial-gradient(1px 1px at 375px 15px, #fff, transparent);
    background-repeat: repeat;
    background-size: 400px 100px;
    animation: sparkle 6s ease-in-out infinite alternate;
}

@keyframes sparkle {
    0% { opacity: 0.4; }
    100% { opacity: 0.9; }
}

.moon {
    position: absolute;
    top: 12%;
    right: 14%;
    width: 60px;
    height: 60px;
    background: radial-gradient(circle at 30% 30%, #e8e8f0 0%, transparent 45%);
    border-radius: 50%;
    box-shadow: 0 0 40px rgba(230, 230, 240, 0.4);
}

.mountains {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 150px;
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.8) 100%);
}

.mountains::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 150"><path d="M0,150 L0,80 L100,50 L150,90 L200,40 L250,70 L300,30 L350,60 L400,25 L450,55 L500,20 L550,45 L600,15 L650,40 L700,10 L750,35 L800,20 L850,40 L900,15 L950,30 L1000,10 L1050,25 L1100,15 L1150,20 L1200,10 L1200,150 Z" fill="%23000000"/></svg>') repeat-x;
    background-size: 1200px 150px;
}

.village {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 120px;
    max-width: 1100px;
}

.village svg {
    width: 100%;
    height: 100%;
    display: block;
}

.site {
    position: relative;
    z-index: 100;
    max-width: var(--site-width);
    margin: 0 auto;
    padding: 34px 22px 110px;
}

.layout {
    display: grid;
    grid-template-columns: var(--rail) minmax(0, 1fr) var(--aside);
    align-items: start;
    gap: 20px;
}

.layout.no-aside {
    grid-template-columns: var(--rail) minmax(0, 1fr);
}

.panel {
    position: relative;
    background: var(--panel);
    border-top: 1px solid var(--bd-hi);
    border-left: 1px solid var(--bd-hi);
    border-right: 1px solid var(--bd-lo);
    border-bottom: 1px solid var(--bd-lo);
    border-radius: 6px;
    box-shadow: 0 20px 55px rgba(0,0,0,0.6);
}

.panel::before {
    content: '';
    position: absolute;
    inset: 8px;
    border: 1px solid #2a2a26;
    border-radius: 3px;
    pointer-events: none;
}

.sidebar {
    position: sticky;
    top: 18px;
    padding: 18px 0 20px;
}

.aside {
    padding: 18px 0 20px;
}

.rail-group + .rail-group {
    margin-top: 22px;
}

.rail-title {
    position: relative;
    font-size: 0.72em;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--dim);
    padding: 0 20px 8px;
    margin: 0 8px 10px;
    border-bottom: 1px solid var(--bd);
}

.nav-list {
    list-style: none;
    padding: 0 12px;
    margin: 0;
}

.nav-list li {
    margin: 0 0 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border: 1px solid transparent;
    border-radius: 3px;
    color: var(--text);
    background: none;
    font-size: 0.92em;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.nav-link .nav-mark {
    color: var(--bd-hi);
    font-size: 0.8em;
    transition: color 0.15s ease, transform 0.15s ease;
}

.nav-link:hover {
    color: #fff;
    background: rgba(150,150,140,.10);
    border-color: var(--bd);
}

.nav-link:hover .nav-mark {
    color: var(--accent);
    transform: translateX(2px);
}

.nav-link.is-current {
    color: var(--teal);
    background: rgba(111,188,198,.08);
    border-color: var(--teal-dim);
}

.nav-link.is-current .nav-mark {
    color: var(--teal);
}

.nav-link.is-external .nav-mark {
    color: var(--dim);
}

.nav-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    cursor: pointer;
}

.nav-toggle::-webkit-details-marker {
    display: none;
}

.nav-burger,
.nav-toggle .nav-caret {
    display: none;
}

@media (min-width: 901px) {
    .nav-toggle {
        pointer-events: none;
    }
    .nav-root:not([open]) > .nav-list {
        display: block;
    }
    .nav-root::details-content {
        content-visibility: visible;
        block-size: auto;
    }
}

.nav-group summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4px;
    list-style: none;
    cursor: pointer;
}

.nav-group summary::-webkit-details-marker {
    display: none;
}

.nav-group summary .nav-link {
    flex: 1;
    min-width: 0;
}

.nav-caret {
    color: var(--dim);
    font-size: 0.75em;
    padding: 0 8px 0 2px;
    transition: transform 0.15s ease, color 0.15s ease;
}

.nav-group summary:hover .nav-caret {
    color: var(--accent);
}

details[open] > summary .nav-caret {
    transform: rotate(180deg);
}

.nav-sub {
    padding: 4px 0 6px 12px;
    margin-left: 12px;
    border-left: 1px solid var(--bd);
}

.nav-sub .nav-link {
    font-size: 0.86em;
    letter-spacing: 0.4px;
}

.content {
    padding: 42px 54px 48px;
    min-width: 0;
}

.content::after {
    content: '';
    display: block;
    clear: both;
}

.ornament {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 0 auto 22px;
}

.ornament::before,
.ornament::after {
    content: '';
    height: 1px;
    width: 120px;
    background: linear-gradient(90deg, transparent, #4a4a48);
}

.ornament::after {
    background: linear-gradient(90deg, #4a4a48, transparent);
}

.ornament span {
    width: 5px;
    height: 5px;
    transform: rotate(45deg);
    background: #4a4a48;
}

h1 {
    font-family: 'IBM Plex Sans Light', system-ui, sans-serif;
    font-size: 2.9em;
    font-weight: 700;
    text-align: center;
    color: var(--title);
    margin: 0 0 18px 0;
    letter-spacing: 3px;
    text-transform: uppercase;
    line-height: 1.2;
}

h1.brand img {
    display: block;
    width: min(100%, 520px);
    height: auto;
    margin: 0 auto;
    border: none;
    border-radius: 0;
}

h2 {
    position: relative;
    font-size: 1.55em;
    font-weight: 700;
    color: var(--teal);
    margin-top: 42px;
    padding: 0 0 10px 0;
    border-bottom: 1px solid var(--teal-dim);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -3px;
    width: 64px;
    height: 3px;
    background: var(--teal-dim);
}

h3 {
    font-size: 1.22em;
    font-weight: 700;
    color: var(--teal);
    margin-top: 30px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

h4 {
    font-size: 1.05em;
    font-weight: 700;
    color: var(--teal);
    margin-top: 24px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

p {
    font-size: 1.02em;
    margin: 15px 0;
    color: var(--text);
    text-align: justify;
}

strong {
    color: #e6e2d6;
    font-weight: 600;
}

ul, ol {
    padding-left: 26px;
    margin: 12px 0;
}

li {
    margin-bottom: 8px;
    color: var(--text);
    line-height: 1.7;
}

img {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--bd);
    border-radius: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    font-size: 0.95em;
}

th, td {
    border: 1px solid var(--bd);
    padding: 8px 12px;
    text-align: left;
}

th {
    background: var(--inset);
    color: var(--title);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.85em;
}

code {
    background: #161613;
    padding: 3px 8px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    color: #c9c6ba;
    border: 1px solid var(--bd);
    font-size: 0.92em;
}

pre {
    position: relative;
    background: #08080a;
    border: 1px solid var(--bd);
    border-left: 3px solid var(--teal-dim);
    border-radius: 4px;
    padding: 18px 22px;
    margin: 16px 0;
    overflow-x: auto;
}

pre code {
    background: none;
    border: none;
    padding: 0;
    color: #c9c6ba;
    font-size: 0.88em;
    line-height: 1.6;
    white-space: pre;
}

a {
    color: var(--accent);
    text-decoration: none;
    background-image: linear-gradient(currentColor, currentColor);
    background-position: 0 100%;
    background-repeat: no-repeat;
    background-size: 100% 1px;
    padding-bottom: 1px;
    transition: background-size 0.2s ease, color 0.2s ease;
}

a:hover {
    color: #e0a85a;
    background-size: 100% 2px;
}

.nav-link, .btn, .big-btn {
    background-image: none;
}

.cta-row {
    text-align: center;
    margin: 28px 0 10px;
}

.btn {
    display: inline-block;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #e6e2d6;
    background: transparent;
    border: 1px solid var(--bd-hi);
    padding: 14px 38px;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease;
}

.btn:hover {
    color: #fff;
    background: rgba(150,150,140,.14);
    transform: translateY(-2px);
}

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

.btn:focus-visible,
.big-btn:focus-visible,
.nav-link:focus-visible {
    outline: 2px solid var(--bd-hi);
    outline-offset: 3px;
}

.section-divider {
    height: 2px;
    background: linear-gradient(90deg, transparent, #2c2c2a, transparent);
    margin: 22px 0;
}

.callout {
    position: relative;
    background: var(--inset);
    border: 1px solid var(--bd);
    border-radius: 4px;
    padding: 20px 26px 22px;
    margin: 24px 0;
}

.callout::before,
.callout::after {
    content: '';
    position: absolute;
    width: 9px;
    height: 9px;
    border: 1px solid var(--bd-hi);
}

.callout::before {
    top: -1px;
    left: -1px;
    border-right: none;
    border-bottom: none;
}

.callout::after {
    bottom: -1px;
    right: -1px;
    border-left: none;
    border-top: none;
}

.callout h2 {
    margin-top: 0;
    border: none;
    padding: 0;
    font-size: 1.15em;
    letter-spacing: 1.5px;
}

.callout h2::after { display: none; }

.callout ul { margin: 10px 0 4px; }

.callout code { font-size: 0.88em; }

.note {
    background: #161613;
    border: 1px solid var(--bd);
    border-left: 4px solid var(--accent);
    padding: 14px 20px;
    margin: 20px 0;
    font-size: 0.96em;
    border-radius: 0 4px 4px 0;
}

.version-badge {
    display: inline-block;
    font-size: 0.85em;
    letter-spacing: 1px;
    color: var(--dim);
    border: 1px solid var(--bd);
    background: var(--inset);
    border-radius: 3px;
    padding: 4px 14px;
    margin: 0 auto 6px;
}

.badge-row {
    text-align: center;
    margin-bottom: 10px;
}

.recommended-banner {
    position: relative;
    background: var(--panel-solid);
    border: 1px solid var(--bd);
    border-radius: 8px;
    padding: 24px 28px;
    margin: 24px 0 10px;
    text-align: center;
    box-shadow: inset 0 0 0 1px rgba(150,150,140,0.10), 0 6px 18px rgba(0,0,0,0.18);
}

.recommended-banner .big-btn { margin-top: 12px; }

.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 18px;
    margin: 20px 0;
}

.dl-card {
    position: relative;
    background: var(--panel-solid);
    border: 1px solid var(--bd);
    border-radius: 8px;
    padding: 28px 22px 26px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.dl-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 38px;
    height: 3px;
    background: linear-gradient(90deg, transparent, #4a4a48, transparent);
    border-radius: 0 0 3px 3px;
}

.dl-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 26px rgba(0,0,0,0.28);
    border-color: var(--bd-hi);
}

.dl-card .plat-name {
    font-weight: 700;
    color: var(--title);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 1.08em;
}

.dl-card .plat-arch {
    color: var(--dim);
    font-size: 0.88em;
    margin-bottom: 14px;
}

.big-btn {
    display: inline-block;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #e6e2d6;
    background: transparent;
    border: 1px solid var(--bd-hi);
    padding: 12px 26px;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease;
}

.big-btn:hover {
    color: #fff;
    background: rgba(150,150,140,.14);
    transform: translateY(-2px);
}

.big-btn:active { transform: translateY(1px); }

.meta {
    margin-top: 10px;
    font-size: 0.82em;
    color: var(--dim);
}

.meta a { color: var(--dim); }
.meta a:hover { color: var(--text); }

.unavailable {
    color: var(--dim);
    font-style: italic;
}

.status-msg {
    text-align: center;
    color: var(--dim);
    font-style: italic;
    padding: 30px 0;
}

@media (max-width: 1180px) {
    .layout,
    .layout.no-aside {
        grid-template-columns: var(--rail) minmax(0, 1fr);
    }
    .aside {
        grid-column: 1 / -1;
    }
    .aside .rail-group {
        display: inline-block;
        vertical-align: top;
        min-width: 240px;
        margin: 0 20px 10px 0;
    }
    .aside .rail-group + .rail-group { margin-top: 0; }
}

@media (max-width: 900px) {
    .site {
        max-width: 100%;
        padding: 14px 10px 60px;
    }
    .layout,
    .layout.no-aside {
        grid-template-columns: minmax(0, 1fr);
    }
    .sidebar {
        position: static;
        padding: 14px 0;
    }
    .nav-toggle {
        justify-content: flex-start;
        padding-bottom: 10px;
    }
    .nav-burger,
    .nav-toggle .nav-caret {
        display: inline;
    }
    .nav-toggle .nav-caret {
        margin-left: auto;
    }
    .nav-root[open] > .nav-list {
        padding-top: 8px;
    }
    .nav-list {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
        padding: 0 12px;
    }
    .nav-list li { margin: 0; }
    .content { padding: 30px 26px 34px; }
    h1 { font-size: 2em; }
    h2 { font-size: 1.35em; }
    p { text-align: left; font-size: 1em; }
    .ornament::before, .ornament::after { width: 60px; }
}