:root {
    color-scheme: dark;
    --background: #050c14;
    --surface: #0a1723;
    --surface-raised: #102234;
    --surface-code: #030b12;
    --border: #26445b;
    --border-strong: #3a6886;
    --text: #eef8ff;
    --muted: #a9bfd0;
    --subtle: #7f9aaf;
    --cyan: #6de4ff;
    --cyan-soft: #c0f6ff;
    --coral: #ff8d74;
    --green: #7cf2a6;
    --amber: #ffd166;
    --focus: #ffe36e;
    --shadow: 0 28px 80px rgb(0 0 0 / 0.32);
    --radius: 1rem;
    --content: 74rem;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html {
    background: var(--background);
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at 8% -8%, rgb(0 168 255 / 0.18), transparent 28rem),
        radial-gradient(circle at 94% 14%, rgb(255 111 82 / 0.12), transparent 24rem),
        linear-gradient(180deg, #07111c 0, var(--background) 30rem);
    color: var(--text);
    line-height: 1.65;
}

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

a {
    color: var(--cyan);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
}

a:hover {
    color: var(--cyan-soft);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 4px;
}

button {
    font: inherit;
}

.skip-link {
    position: fixed;
    z-index: 100;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.65rem 0.9rem;
    border-radius: 0.5rem;
    background: var(--focus);
    color: #111827;
    font-weight: 850;
    transform: translateY(-180%);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-shell {
    width: min(100% - 2.5rem, var(--content));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    z-index: 20;
    top: 0;
    border-bottom: 1px solid rgb(58 104 134 / 0.55);
    background: rgb(5 12 20 / 0.9);
    backdrop-filter: blur(18px);
}

.site-header__inner {
    display: flex;
    min-height: 4.6rem;
    align-items: center;
    justify-content: space-between;
    gap: 1.4rem;
    padding-block: 0.65rem;
}

.brand {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.72rem;
    color: var(--text);
    font-weight: 900;
    letter-spacing: -0.03em;
    text-decoration: none;
}

.brand:hover {
    color: var(--text);
}

.brand__mark {
    display: grid;
    width: 2.35rem;
    height: 2.35rem;
    place-items: center;
    border: 1px solid #2683ad;
    border-radius: 0.68rem;
    background: linear-gradient(145deg, #0d3851, #0b2233);
    color: var(--cyan);
    font: 850 0.78rem ui-monospace, SFMono-Regular, Consolas, monospace;
    box-shadow: inset 0 1px rgb(255 255 255 / 0.12);
}

.site-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.18rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav a {
    display: block;
    padding: 0.46rem 0.62rem;
    border-radius: 0.46rem;
    color: var(--muted);
    font-size: 0.84rem;
    font-weight: 750;
    text-decoration: none;
}

.site-nav a:hover {
    background: var(--surface);
    color: var(--text);
}

.site-nav a[aria-current="page"] {
    background: #123246;
    color: var(--cyan);
}

main {
    min-height: 62vh;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
    gap: clamp(2rem, 7vw, 5.5rem);
    align-items: center;
    padding-block: clamp(3.8rem, 9vw, 7.2rem);
}

.eyebrow {
    margin: 0 0 0.72rem;
    color: var(--coral);
    font-size: 0.76rem;
    font-weight: 900;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    line-height: 1.12;
    text-wrap: balance;
}

h1 {
    max-width: 14ch;
    margin: 0;
    font-size: clamp(2.8rem, 7vw, 5.8rem);
    letter-spacing: -0.065em;
}

h2 {
    margin: 0 0 0.9rem;
    font-size: clamp(1.7rem, 4vw, 2.7rem);
    letter-spacing: -0.04em;
}

h3 {
    margin: 0 0 0.58rem;
    font-size: 1.15rem;
    letter-spacing: -0.018em;
}

.lede {
    max-width: 62ch;
    margin: 1.25rem 0 0;
    color: var(--muted);
    font-size: clamp(1.04rem, 2vw, 1.22rem);
}

.pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.52rem;
    margin: 1.55rem 0 0;
    padding: 0;
    list-style: none;
}

.pill {
    padding: 0.36rem 0.64rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgb(10 23 35 / 0.78);
    color: #c4d8e6;
    font: 750 0.74rem ui-monospace, SFMono-Regular, Consolas, monospace;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.72rem;
    margin-top: 1.7rem;
}

.button {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    justify-content: center;
    padding: 0.64rem 0.95rem;
    border: 1px solid #3f8ba9;
    border-radius: 0.56rem;
    background: #12384a;
    color: #ddf9ff;
    font-weight: 850;
    text-decoration: none;
}

.button:hover {
    border-color: var(--cyan);
    background: #174b61;
    color: #fff;
}

.button--secondary {
    border-color: var(--border-strong);
    background: var(--surface);
    color: var(--text);
}

.code-card,
.card,
.callout,
.method,
.table-wrap,
.result-panel,
.side-index {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgb(10 23 35 / 0.88);
    box-shadow: var(--shadow);
}

.code-card {
    overflow: hidden;
}

.code-card__bar {
    display: flex;
    align-items: center;
    gap: 0.34rem;
    padding: 0.75rem 0.95rem;
    border-bottom: 1px solid var(--border);
    background: #102638;
}

.code-card__bar span {
    width: 0.56rem;
    height: 0.56rem;
    border-radius: 50%;
    background: #58758a;
}

.code-card pre {
    min-height: 18rem;
    margin: 0;
    padding: 1.25rem;
}

code,
pre,
kbd {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

:not(pre) > code,
kbd {
    padding: 0.12em 0.32em;
    border: 1px solid #2b4c62;
    border-radius: 0.3rem;
    background: #07131d;
    color: #dcf8ff;
    font-size: 0.9em;
}

pre {
    overflow-x: auto;
    color: #dcecf7;
    font-size: 0.87rem;
    line-height: 1.62;
    tab-size: 4;
}

.code-keyword {
    color: #c4b5fd;
}

.code-string {
    color: #9bf1b4;
}

.code-property {
    color: #7ddfff;
}

.hero-art {
    margin: 0 0 clamp(3rem, 7vw, 5.5rem);
    overflow: hidden;
    border: 1px solid var(--border-strong);
    border-radius: 1.1rem;
    background: #020810;
    box-shadow: var(--shadow);
}

.hero-art img {
    width: 100%;
    height: auto;
}

.section {
    padding-block: clamp(3rem, 7vw, 5.5rem);
}

.section--bordered {
    border-top: 1px solid rgb(38 68 91 / 0.72);
}

.section-heading {
    max-width: 50rem;
    margin-bottom: 1.65rem;
}

.section-heading p,
.card p,
.method p,
.prose p,
.prose li,
.callout p,
.side-index p,
.side-index li {
    color: var(--muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.grid > * {
    min-width: 0;
}

.grid--two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
    padding: 1.35rem;
    box-shadow: none;
}

.card p {
    margin-bottom: 0;
}

.card__label {
    display: block;
    margin-bottom: 0.72rem;
    color: var(--coral);
    font: 850 0.7rem ui-monospace, SFMono-Regular, Consolas, monospace;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.card__link {
    display: inline-flex;
    margin-top: 0.9rem;
    font-weight: 850;
}

.page-hero {
    max-width: 58rem;
    padding-block: clamp(3.4rem, 8vw, 6rem) 3rem;
}

.page-hero h1 {
    max-width: 18ch;
    font-size: clamp(2.5rem, 6vw, 4.8rem);
}

.page-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 16rem;
    gap: clamp(2rem, 7vw, 5rem);
    align-items: start;
    padding-bottom: 5rem;
}

.prose {
    min-width: 0;
}

.prose > section + section {
    margin-top: 3.4rem;
    padding-top: 3.4rem;
    border-top: 1px solid var(--border);
}

.prose section[id] {
    scroll-margin-top: 6rem;
}

.prose h2 {
    font-size: clamp(1.6rem, 4vw, 2.35rem);
}

.prose h3 {
    margin-top: 1.8rem;
}

.prose ul,
.prose ol {
    padding-left: 1.28rem;
}

.prose li + li {
    margin-top: 0.42rem;
}

.side-index {
    position: sticky;
    top: 6rem;
    padding: 1.05rem;
    box-shadow: none;
}

.side-index strong {
    display: block;
    margin-bottom: 0.5rem;
}

.side-index ul {
    display: grid;
    gap: 0.38rem;
    margin: 0;
    padding-left: 1.08rem;
    font-size: 0.86rem;
}

.code-block {
    position: relative;
    margin: 1.2rem 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 0.78rem;
    background: var(--surface-code);
}

.code-block pre {
    margin: 0;
    padding: 3.35rem 1.2rem 1.12rem;
}

.copy-button {
    position: absolute;
    z-index: 1;
    top: 0.5rem;
    right: 0.5rem;
    min-height: 2rem;
    padding: 0.28rem 0.58rem;
    border: 1px solid var(--border-strong);
    border-radius: 0.4rem;
    background: #102638;
    color: var(--text);
    cursor: pointer;
    font-size: 0.74rem;
    font-weight: 800;
}

.copy-button:hover {
    border-color: var(--cyan);
}

.callout {
    margin-block: 1.4rem;
    padding: 0.95rem 1.08rem;
    border-left: 4px solid var(--cyan);
    border-radius: 0.5rem;
    box-shadow: none;
}

.callout--warning {
    border-left-color: var(--amber);
}

.callout--coral {
    border-left-color: var(--coral);
}

.callout strong {
    color: var(--text);
}

.callout p {
    margin: 0.32rem 0 0;
}

.method-list {
    display: grid;
    gap: 1rem;
}

.method {
    padding: 1.2rem;
    box-shadow: none;
}

.method h3 {
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 1rem;
}

.method dl {
    display: grid;
    grid-template-columns: 6.5rem 1fr;
    gap: 0.46rem 0.9rem;
    margin: 0.9rem 0 0;
}

.method dt {
    color: var(--subtle);
    font-weight: 850;
}

.method dd {
    margin: 0;
    color: var(--muted);
}

.table-wrap {
    max-width: 100%;
    margin: 1.2rem 0;
    overflow-x: auto;
    box-shadow: none;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th,
td {
    padding: 0.76rem 0.86rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

th {
    background: #102638;
    color: var(--text);
    font-size: 0.74rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

td {
    color: var(--muted);
}

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

.metric {
    color: var(--green);
    font-weight: 900;
}

.result-panel {
    padding: 1.35rem;
    box-shadow: none;
}

.live-shell {
    padding-block: clamp(3rem, 8vw, 6rem);
}

.site-footer {
    border-top: 1px solid var(--border);
    background: rgb(3 9 15 / 0.72);
}

.site-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem 2rem;
    padding-block: 1.7rem;
}

.site-footer p {
    margin: 0;
    color: var(--subtle);
    font-size: 0.84rem;
}

.site-footer nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.75rem;
    font-size: 0.84rem;
}

@media (max-width: 62rem) {
    .grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 48rem) {
    .site-header {
        position: static;
    }

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

    .site-nav ul,
    .site-footer nav {
        justify-content: flex-start;
    }

    .hero,
    .page-layout,
    .grid--two {
        grid-template-columns: minmax(0, 1fr);
    }

    .hero {
        padding-block: 3.4rem;
    }

    .side-index {
        position: static;
        order: -1;
    }

    .prose section[id] {
        scroll-margin-top: 1rem;
    }
}

@media (max-width: 34rem) {
    .site-shell {
        width: min(100% - 1.4rem, var(--content));
    }

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

    .site-nav a {
        padding-inline: 0.48rem;
        font-size: 0.8rem;
    }

    .method dl {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}