:root {
    --bg: #091016;
    --bg-soft: #0f1820;
    --panel: rgba(13, 22, 30, 0.9);
    --panel-strong: #13212c;
    --panel-glass: rgba(15, 24, 32, 0.72);
    --line: rgba(120, 208, 184, 0.18);
    --line-strong: rgba(120, 208, 184, 0.36);
    --text: #e7f2ee;
    --muted: #97aba5;
    --accent: #78d0b8;
    --accent-strong: #a3f4de;
    --accent-warm: #f3bb67;
    --accent-cold: #7eb4ff;
    --danger: #ff866f;
    --success: #a4f2b3;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.32);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --max-width: 1180px;
    --header-height: 84px;
    --font-display: "Bahnschrift", "Trebuchet MS", "Segoe UI Variable Text", sans-serif;
    --font-body: "Trebuchet MS", "Candara", "Segoe UI Variable Text", sans-serif;
    --font-code: "Cascadia Code", "Fira Code", "Consolas", monospace;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(120, 208, 184, 0.14), transparent 32%),
        radial-gradient(circle at top right, rgba(126, 180, 255, 0.12), transparent 26%),
        linear-gradient(180deg, #0a1117 0%, #091016 38%, #101922 100%);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 78%);
}

a {
    color: inherit;
    text-decoration: none;
}

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

code,
pre,
.chip,
.metric strong,
.kicker,
.tag,
.status-badge,
.spec-key {
    font-family: var(--font-code);
}

.site-shell {
    position: relative;
    z-index: 1;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(14px);
    background: rgba(8, 13, 18, 0.7);
    border-bottom: 1px solid rgba(120, 208, 184, 0.12);
}

.site-header__inner,
.site-footer__inner,
.page-section,
.hero,
.subhero,
.feature-strip,
.doc-strip {
    width: min(var(--max-width), calc(100% - 32px));
    margin: 0 auto;
}

.site-header__inner {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.brand-lockup {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    font-family: var(--font-display);
    letter-spacing: 0.04em;
}

.brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background:
        linear-gradient(145deg, rgba(120, 208, 184, 0.25), rgba(126, 180, 255, 0.18)),
        rgba(16, 28, 36, 0.85);
    border: 1px solid rgba(120, 208, 184, 0.26);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.brand-mark img {
    width: 22px;
    height: 22px;
}

.brand-copy {
    display: grid;
    gap: 2px;
}

.brand-copy strong {
    font-size: 1rem;
    text-transform: uppercase;
}

.brand-copy span {
    font-size: 0.76rem;
    color: var(--muted);
}

.nav-toggle {
    display: none;
    border: 1px solid var(--line);
    background: rgba(15, 24, 32, 0.88);
    color: var(--text);
    border-radius: 999px;
    padding: 10px 14px;
    font: inherit;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.site-nav a {
    color: var(--muted);
    padding: 10px 14px;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
    color: var(--text);
    border-color: var(--line);
    background: rgba(120, 208, 184, 0.08);
}

.hero,
.subhero {
    padding: 72px 0 38px;
}

.hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 30px;
    align-items: stretch;
}

.hero-copy,
.hero-panel,
.feature-rail,
.page-card,
.code-panel,
.doc-card,
.stack-card,
.block-card,
.callout,
.timeline-card,
.summary-grid__item,
.spec-card,
.content-card {
    background: var(--panel-glass);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.hero-copy,
.hero-panel,
.page-card,
.callout,
.timeline-card,
.content-card,
.spec-card {
    padding: 28px;
}

.hero-copy {
    position: relative;
    overflow: hidden;
}

.hero-copy::after {
    content: "";
    position: absolute;
    inset: auto -10% -30% auto;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(120, 208, 184, 0.16), transparent 65%);
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(120, 208, 184, 0.08);
    border: 1px solid var(--line);
    color: var(--accent-strong);
    font-size: 0.84rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero h1,
.subhero h1,
.section-header h2,
.content-card h2,
.timeline-card h3,
.page-card h3,
.block-card h3,
.doc-card h3,
.callout h3,
.spec-card h3 {
    margin: 0;
    font-family: var(--font-display);
    line-height: 1.06;
    letter-spacing: 0.02em;
}

.hero h1,
.subhero h1 {
    font-size: clamp(2.8rem, 5vw, 5.1rem);
}

.hero p,
.subhero p,
.section-header p,
.page-card p,
.doc-card p,
.block-card p,
.content-card p,
.callout p,
.timeline-card p,
.spec-card p {
    color: var(--muted);
}

.hero-actions,
.subhero-actions,
.filter-bar,
.status-row,
.tags,
.icon-label,
.inline-specs,
.metric-row,
.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.button,
.copy-code,
.filter-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 18px;
    border-radius: 999px;
    border: 1px solid var(--line);
    font: inherit;
    color: var(--text);
    background: rgba(15, 24, 32, 0.88);
    cursor: pointer;
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible,
.copy-code:hover,
.copy-code:focus-visible,
.filter-button:hover,
.filter-button:focus-visible,
.filter-button.is-active {
    transform: translateY(-1px);
    border-color: var(--line-strong);
    background: rgba(120, 208, 184, 0.12);
}

.button--primary {
    color: #06110f;
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    border-color: transparent;
}

.button--ghost {
    color: var(--accent-strong);
}

.metric-grid,
.summary-grid,
.feature-grid,
.card-grid,
.doc-grid,
.stack-grid,
.block-grid,
.spec-grid,
.two-column,
.three-column,
.example-grid {
    display: grid;
    gap: 18px;
}

.metric-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 28px;
}

.metric {
    padding: 16px 18px;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: rgba(120, 208, 184, 0.05);
}

.metric strong {
    display: block;
    margin-bottom: 6px;
    color: var(--accent-strong);
    font-size: 0.88rem;
}

.metric span {
    color: var(--muted);
    font-size: 0.96rem;
}

.hero-panel {
    display: grid;
    gap: 18px;
    align-content: start;
    background:
        linear-gradient(180deg, rgba(126, 180, 255, 0.08), transparent 34%),
        var(--panel-glass);
}

.hero-panel__top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.hero-panel__top strong {
    font-family: var(--font-display);
    font-size: 1.25rem;
}

.status-badge {
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 0.82rem;
    border: 1px solid rgba(163, 242, 179, 0.32);
    color: var(--success);
    background: rgba(164, 242, 179, 0.1);
}

.status-badge--partial {
    border-color: rgba(243, 187, 103, 0.34);
    color: var(--accent-warm);
    background: rgba(243, 187, 103, 0.1);
}

.status-badge--attention {
    border-color: rgba(255, 134, 111, 0.34);
    color: var(--danger);
    background: rgba(255, 134, 111, 0.1);
}

.signal-stack {
    display: grid;
    gap: 10px;
}

.signal-card {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    background: rgba(8, 14, 18, 0.75);
    border: 1px solid rgba(126, 180, 255, 0.18);
}

.signal-card strong {
    display: block;
    margin-bottom: 6px;
    color: var(--accent-cold);
}

.signal-card p {
    margin: 0;
}

.hero-schematic {
    display: grid;
    gap: 12px;
    margin-top: 6px;
}

.schematic-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.schematic-node {
    min-height: 118px;
    padding: 18px;
    border-radius: var(--radius-md);
    background: rgba(9, 14, 19, 0.78);
    border: 1px solid var(--line);
    display: grid;
    align-content: start;
    gap: 12px;
}

.schematic-node img,
.icon-label img,
.card-icon img,
.block-card__icon img,
.doc-card__icon img {
    width: 28px;
    height: 28px;
}

.schematic-node strong,
.card-icon span,
.block-card__icon span,
.doc-card__icon span,
.icon-label span {
    font-family: var(--font-display);
}

.section-header {
    margin-bottom: 22px;
    display: grid;
    gap: 12px;
}

.page-section {
    padding: 28px 0 34px;
}

.feature-strip,
.doc-strip {
    padding: 0 0 8px;
}

.summary-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.summary-grid__item,
.page-card,
.doc-card,
.stack-card,
.block-card,
.timeline-card,
.content-card {
    padding: 22px;
}

.summary-grid__item h3,
.page-card h3,
.doc-card h3,
.stack-card h3,
.block-card h3,
.timeline-card h3,
.content-card h3 {
    font-size: 1.32rem;
}

.card-icon,
.block-card__icon,
.doc-card__icon {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.feature-grid,
.card-grid,
.doc-grid,
.stack-grid,
.block-grid,
.spec-grid,
.example-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.two-column {
    grid-template-columns: 1.15fr 0.85fr;
}

.three-column {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tag,
.chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    border: 1px solid rgba(120, 208, 184, 0.2);
    background: rgba(120, 208, 184, 0.08);
    color: var(--accent-strong);
    font-size: 0.86rem;
}

.tag--warm {
    color: var(--accent-warm);
    border-color: rgba(243, 187, 103, 0.22);
    background: rgba(243, 187, 103, 0.09);
}

.tag--cold {
    color: var(--accent-cold);
    border-color: rgba(126, 180, 255, 0.22);
    background: rgba(126, 180, 255, 0.08);
}

.code-panel {
    position: relative;
    overflow: hidden;
    padding: 0;
}

.code-panel__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--line);
    background: rgba(8, 14, 18, 0.86);
}

.code-panel__header strong {
    font-family: var(--font-display);
}

.code-panel pre {
    margin: 0;
    padding: 18px;
    overflow-x: auto;
    background: rgba(5, 9, 13, 0.92);
    color: #d8f7ef;
    font-size: 0.94rem;
}

.code-panel code {
    white-space: pre;
}

.callout {
    border-color: rgba(243, 187, 103, 0.22);
    background:
        linear-gradient(180deg, rgba(243, 187, 103, 0.08), transparent 55%),
        var(--panel-glass);
}

.list,
.spec-list,
.timeline-list,
.feature-list {
    display: grid;
    gap: 12px;
    padding: 0;
    margin: 0;
    list-style: none;
}

.list li,
.spec-list li,
.timeline-list li,
.feature-list li {
    padding-left: 18px;
    position: relative;
    color: var(--muted);
}

.list li::before,
.spec-list li::before,
.timeline-list li::before,
.feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.72em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-cold));
}

.doc-card a,
.inline-link {
    color: var(--accent-strong);
}

.doc-card a:hover,
.inline-link:hover {
    text-decoration: underline;
}

.timeline-card {
    position: relative;
    overflow: hidden;
}

.timeline-card::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    background: linear-gradient(180deg, var(--accent), rgba(126, 180, 255, 0.8));
}

.block-card {
    display: grid;
    gap: 14px;
    align-content: start;
}

.block-card.hidden {
    display: none;
}

.block-card__meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.spec-grid {
    margin-top: 8px;
}

.spec-card {
    display: grid;
    gap: 14px;
}

.spec-key {
    display: inline-block;
    color: var(--accent-strong);
    margin-right: 8px;
}

.site-footer {
    margin-top: 34px;
    padding: 30px 0 40px;
    border-top: 1px solid rgba(120, 208, 184, 0.12);
    background: rgba(5, 8, 11, 0.45);
}

.site-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    color: var(--muted);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-links a:hover {
    color: var(--text);
}

.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 360ms ease, transform 360ms ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

@media (max-width: 1080px) {
    .hero,
    .two-column,
    .feature-grid,
    .card-grid,
    .doc-grid,
    .block-grid,
    .spec-grid,
    .example-grid,
    .summary-grid,
    .metric-grid,
    .three-column {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media (max-width: 780px) {
    :root {
        --header-height: 74px;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .site-header__inner {
        flex-wrap: wrap;
        padding: 12px 0;
    }

    .site-nav {
        width: 100%;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 8px 0 4px;
    }

    .site-nav.is-open {
        display: flex;
    }

    .site-nav a {
        width: 100%;
    }

    .hero,
    .two-column,
    .feature-grid,
    .card-grid,
    .doc-grid,
    .stack-grid,
    .block-grid,
    .summary-grid,
    .spec-grid,
    .example-grid,
    .metric-grid,
    .three-column,
    .schematic-row {
        grid-template-columns: 1fr;
    }

    .site-footer__inner {
        flex-direction: column;
        align-items: flex-start;
    }
}