:root {
    --graphite: #0e1116;
    --graphite-2: #141821;
    --graphite-3: #1b2230;
    --ink: #06090f;
    --line: rgba(231, 238, 246, 0.1);
    --line-2: rgba(231, 238, 246, 0.18);
    --line-3: rgba(231, 238, 246, 0.28);
    --fg: #eaf1f8;
    --fg-2: #b6c1cd;
    --fg-3: #7c8696;
    --fg-4: #515b6b;
    --aurora: #5ee0b5;
    --aurora-2: #2fbe93;
    --signal: #5a8dee;
    --amber: #d8a24a;
    --rose: #e36f6f;
    --violet: #8e84e0;
    --panel: rgba(14, 17, 22, 0.82);
    --panel-strong: rgba(20, 24, 33, 0.92);
    --shadow: 0 26px 70px rgba(0, 0, 0, 0.42);
    --bg-deep: var(--graphite);
    --bg-surface: var(--graphite-2);
    --bg-card: var(--panel);
    --bg-card-hover: var(--panel-strong);
    --bg-code: rgba(6, 9, 15, 0.9);
    --border-glass: var(--line-2);
    --border-glass-hover: var(--line-3);
    --border-subtle: var(--line);
    --border-stronger: var(--line-2);
    --aurora-green: var(--aurora);
    --aurora-emerald: var(--aurora);
    --aurora-teal: #58c8dd;
    --aurora-cyan: #58c8dd;
    --aurora-blue: var(--signal);
    --aurora-purple: var(--violet);
    --aurora-violet: var(--violet);
    --aurora-amber: var(--amber);
    --text-primary: var(--fg);
    --text-secondary: var(--fg-2);
    --text-muted: var(--fg-3);
    --sans: Inter, "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

html {
    min-width: 320px;
    scroll-behavior: smooth;
    scrollbar-color: rgba(94, 224, 181, 0.42) rgba(6, 9, 15, 0.86);
}

body[data-ni-skin="northstar"] {
    min-height: 100vh;
    margin: 0;
    overflow-x: hidden;
    background:
        linear-gradient(180deg, rgba(6, 9, 15, 0.78), var(--graphite) 680px),
        linear-gradient(90deg, rgba(6, 9, 15, 0.97), rgba(6, 9, 15, 0.78) 62%, rgba(6, 9, 15, 0.9)),
        url("/assets/brand/global-network-earth.webp") top right / min(1040px, 84vw) auto no-repeat,
        var(--graphite);
    color: var(--fg);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.6;
    letter-spacing: 0;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body[data-ni-skin="northstar"]::before {
    position: fixed;
    z-index: 0;
    inset: 0;
    content: "";
    pointer-events: none;
    background-image:
        linear-gradient(rgba(231, 238, 246, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(231, 238, 246, 0.035) 1px, transparent 1px);
    background-size: 56px 56px;
    opacity: 0.48;
    mask-image: linear-gradient(180deg, black, transparent 76%);
}

body[data-ni-skin="northstar"] > :not(.ns-public-header, .back-to-top) {
    position: relative;
    z-index: 1;
}

body[data-ni-skin="northstar"] a {
    color: inherit;
    text-decoration: none;
}

body[data-ni-skin="northstar"] code,
body[data-ni-skin="northstar"] pre {
    font-family: var(--mono);
}

body[data-ni-skin="northstar"] button,
body[data-ni-skin="northstar"] input,
body[data-ni-skin="northstar"] textarea,
body[data-ni-skin="northstar"] select {
    font: inherit;
}

.wrap,
.wrap-wide {
    position: relative;
    z-index: 1;
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.wrap-wide {
    width: min(1360px, calc(100% - 40px));
}

.topnav {
    position: sticky;
    z-index: 50;
    top: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(14, 17, 22, 0.88);
    backdrop-filter: blur(16px) saturate(132%);
}

.topnav .row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 66px;
}

.topnav .row > * {
    min-width: 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    min-width: 0;
    color: var(--fg);
    font-weight: 800;
}

.brand img {
    display: block;
    width: 176px;
    height: auto;
    border-radius: 0;
    box-shadow: none;
}

.links,
.right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.links a,
.fr-note {
    color: var(--fg-2);
    font-size: 13px;
    font-weight: 700;
}

.links a:hover,
.links a:focus-visible,
.links a[aria-current="page"] {
    color: var(--fg);
}

.links a[aria-current="page"] {
    box-shadow: inset 0 -2px var(--aurora);
}

.fr-note {
    color: var(--aurora);
    white-space: nowrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 38px;
    padding: 0 16px;
    border: 1px solid var(--line-2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.025);
    color: var(--fg);
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
    white-space: nowrap;
    transition: border-color 0.16s ease, background 0.16s ease, transform 0.08s ease;
}

.btn:hover,
.btn:focus-visible {
    border-color: var(--line-3);
    background: rgba(255, 255, 255, 0.05);
    outline: none;
}

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

.btn-primary {
    border-color: transparent;
    background: var(--aurora);
    color: #071018;
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background: var(--aurora-2);
}

.btn-blue {
    border-color: rgba(90, 141, 238, 0.42);
}

.ns-mobile-menu {
    display: none;
    position: relative;
    flex: 0 0 auto;
}

.ns-mobile-menu summary {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid var(--line-2);
    border-radius: 8px;
    cursor: pointer;
    list-style: none;
}

.ns-mobile-menu summary::-webkit-details-marker {
    display: none;
}

.ns-mobile-menu summary span,
.ns-mobile-menu summary span::before,
.ns-mobile-menu summary span::after {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--fg);
    content: "";
}

.ns-mobile-menu summary span::before {
    transform: translateY(-6px);
}

.ns-mobile-menu summary span::after {
    transform: translateY(4px);
}

.ns-mobile-menu-panel {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    display: grid;
    width: min(320px, calc(100vw - 28px));
    gap: 12px;
    padding: 16px;
    border: 1px solid var(--line-2);
    border-radius: 8px;
    background: rgba(14, 17, 22, 0.98);
    box-shadow: var(--shadow);
}

.ns-mobile-menu-panel nav {
    display: grid;
    gap: 2px;
}

.ns-mobile-menu-panel nav a,
.ns-mobile-menu-panel .fr-note {
    padding: 9px 10px;
    border-radius: 6px;
    color: var(--fg-2);
    font-size: 13px;
    font-weight: 700;
}

.ns-mobile-menu-panel nav a:hover,
.ns-mobile-menu-panel nav a:focus-visible,
.ns-mobile-menu-panel nav a[aria-current="page"] {
    background: rgba(94, 224, 181, 0.09);
    color: var(--fg);
    outline: none;
}

.ns-public-footer {
    padding: 50px 0;
    color: var(--fg-3);
}

.footer-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    padding-top: 26px;
    border-top: 1px solid var(--line);
}

.footer-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    font-size: 13px;
    font-weight: 700;
}

.footer-links a:hover,
.footer-links a:focus-visible {
    color: var(--aurora);
    outline: none;
}

.back-to-top {
    position: fixed;
    z-index: 45;
    right: 22px;
    bottom: 22px;
    display: grid;
    width: 44px;
    height: 44px;
    place-items: center;
    border: 1px solid rgba(94, 224, 181, 0.38);
    border-radius: 50%;
    background: rgba(14, 17, 22, 0.9);
    color: var(--aurora);
    box-shadow: 0 12px 34px rgba(0, 0, 0, 0.34);
    font-size: 21px;
    line-height: 1;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 0.18s ease, transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
    backdrop-filter: blur(14px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
    border-color: var(--aurora);
    background: rgba(94, 224, 181, 0.12);
    outline: none;
}

/* Shared page treatment. Functional bodies retain their own layout rules. */
body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) > .container,
body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) > .content,
body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) > main.container {
    width: min(1180px, calc(100% - 40px));
    margin-inline: auto;
}

body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) > .container {
    padding-top: 54px;
}

body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) > .container > .back-link {
    display: none;
}

body[data-ni-skin="northstar"] h1,
body[data-ni-skin="northstar"] .page-title,
body[data-ni-skin="northstar"] .harness-headline {
    color: var(--fg);
    font-family: var(--sans);
    font-weight: 760;
    letter-spacing: 0;
    background: none;
    -webkit-text-fill-color: currentColor;
}

body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) h1 {
    font-size: 40px;
    line-height: 1.12;
}

body[data-ni-skin="northstar"] h2,
body[data-ni-skin="northstar"] h3,
body[data-ni-skin="northstar"] h4,
body[data-ni-skin="northstar"] strong {
    color: var(--fg);
    letter-spacing: 0;
}

body[data-ni-skin="northstar"] p,
body[data-ni-skin="northstar"] li,
body[data-ni-skin="northstar"] .subtitle,
body[data-ni-skin="northstar"] .page-sub {
    color: var(--fg-2);
}

body[data-ni-skin="northstar"] a:not(.btn, .brand, .back-to-top) {
    text-underline-offset: 3px;
}

body[data-ni-skin="northstar"] main a:not(.btn, .card),
body[data-ni-skin="northstar"] .container a:not(.btn, .card),
body[data-ni-skin="northstar"] .content a:not(.btn) {
    color: #73d8e5;
}

body[data-ni-skin="northstar"] main a:not(.btn, .card):hover,
body[data-ni-skin="northstar"] .container a:not(.btn, .card):hover,
body[data-ni-skin="northstar"] .content a:not(.btn):hover {
    text-decoration: underline;
}

body[data-ni-skin="northstar"] input,
body[data-ni-skin="northstar"] textarea,
body[data-ni-skin="northstar"] select {
    border-color: var(--line-2);
    border-radius: 8px;
    background: rgba(6, 9, 15, 0.8);
    color: var(--fg);
}

body[data-ni-skin="northstar"] input:focus,
body[data-ni-skin="northstar"] textarea:focus,
body[data-ni-skin="northstar"] select:focus {
    border-color: var(--aurora);
    outline: 2px solid rgba(94, 224, 181, 0.16);
    outline-offset: 1px;
}

body[data-ni-skin="northstar"] table {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(14, 17, 22, 0.78);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
}

body[data-ni-skin="northstar"] th {
    background: rgba(90, 141, 238, 0.07);
    color: var(--fg-2);
}

body[data-ni-skin="northstar"] th,
body[data-ni-skin="northstar"] td {
    border-color: var(--line);
}

body[data-ni-skin="northstar"] pre,
body[data-ni-skin="northstar"] .harness-pre {
    border: 1px solid var(--line);
    border-left: 3px solid #58c8dd;
    border-radius: 8px;
    background: rgba(6, 9, 15, 0.94);
    color: var(--fg);
}

body[data-ni-skin="northstar"] .card,
body[data-ni-skin="northstar"] .harness-card,
body[data-ni-skin="northstar"] .tier-reference-card,
body[data-ni-skin="northstar"] .info-banner,
body[data-ni-skin="northstar"] .notice,
body[data-ni-skin="northstar"] .model-card {
    border-color: var(--line-2);
    border-radius: 8px;
    background: rgba(14, 17, 22, 0.84);
    box-shadow: 0 18px 46px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(12px);
}

body[data-ni-skin="northstar"] .card:hover,
body[data-ni-skin="northstar"] .model-card:hover {
    border-color: rgba(94, 224, 181, 0.44);
    background: rgba(20, 24, 33, 0.94);
}

/* Models and pricing retain their live filters and rendering adapters. */
body[data-ni-view="marketing.models"] > .hero {
    max-width: 1180px;
    padding: 54px 20px 30px;
    text-align: left;
}

body[data-ni-view="marketing.models"] > .hero .subtitle {
    max-width: 880px;
    margin-left: 0;
}

body[data-ni-view="marketing.models"] > .content {
    padding-inline: 0;
}

body[data-ni-view="marketing.models"] .filter-bar {
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(14, 17, 22, 0.72);
}

body[data-ni-view="marketing.models"] .info-banner {
    border-left: 3px solid var(--signal);
}

body[data-ni-view="marketing.pricing"] > .container {
    max-width: 1180px;
}

body[data-ni-view="marketing.pricing"] .notice {
    border-left: 3px solid var(--amber);
}

/* The global header replaces the legacy docs-only back-link row. */
body[data-ni-view="marketing.docs"] .doc-nav,
body[data-ni-skin="northstar"] .doc-nav {
    display: none;
}

body[data-ni-skin="northstar"] .doc-nav .back-link {
    display: none;
}

body[data-ni-skin="northstar"] .doc-home {
    color: var(--aurora);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

body[data-ni-skin="northstar"] .endpoint-bar {
    position: relative;
    top: auto;
    border-color: var(--line-2);
    background: rgba(6, 9, 15, 0.94);
}

body[data-ni-skin="northstar"] .endpoint-bar code {
    border-color: rgba(88, 200, 221, 0.34);
    background: rgba(88, 200, 221, 0.1);
    color: #8de2ec;
}

body[data-ni-skin="northstar"] .harness-section {
    border-color: var(--line-2);
    background: rgba(14, 17, 22, 0.58);
}

body[data-ni-skin="northstar"] .container {
    max-width: 880px;
}

body[data-ni-view="marketing.pricing"] .container,
body[data-ni-view="marketing.status"] .container,
body[data-ni-view="marketing.trust"] .container {
    max-width: 1100px;
}

.ns-not-found {
    display: grid;
    align-content: center;
    width: min(1180px, calc(100% - 40px));
    min-height: calc(100vh - 230px);
    margin: 0 auto;
    padding: 72px 0;
}

.ns-not-found-panel {
    position: relative;
    box-sizing: border-box;
    max-width: 760px;
    overflow: hidden;
    padding: 44px;
    border: 1px solid var(--line-2);
    border-radius: 8px;
    background:
        linear-gradient(135deg, rgba(94, 224, 181, 0.08), transparent 48%),
        var(--panel-strong);
    box-shadow: var(--shadow);
}

.ns-not-found-panel::after {
    position: absolute;
    width: 280px;
    height: 280px;
    right: -118px;
    bottom: -156px;
    border: 1px solid rgba(94, 224, 181, 0.25);
    content: "";
    transform: rotate(45deg);
}

.ns-not-found-code {
    margin: 0 0 16px;
    color: var(--aurora);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.ns-not-found h1 {
    max-width: 680px;
    margin: 0 0 18px;
    font-size: clamp(38px, 7vw, 68px);
    line-height: 1.04;
}

.ns-not-found-panel > p:not(.ns-not-found-code) {
    max-width: 610px;
    margin: 0 0 30px;
    color: var(--fg-2);
    font-size: 17px;
}

.ns-not-found-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

@media (max-width: 1040px) {
    .topnav .links,
    .topnav .right {
        display: none;
    }

    .ns-mobile-menu {
        display: block;
        margin-left: auto;
    }
}

@media (max-width: 760px) {
    body[data-ni-skin="northstar"] {
        background-size: 920px auto;
    }

    .wrap,
    .wrap-wide {
        width: min(calc(100% - 28px), 1180px);
    }

    .topnav .row {
        min-height: 62px;
        padding: 0;
        flex-direction: row;
        align-items: center;
    }

    .brand img {
        width: 154px;
    }

    body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) > .container,
    body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) > .content,
    body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) > main.container {
        width: min(100% - 28px, 1180px);
    }

    body[data-ni-skin="northstar"]:not([data-ni-view="marketing.home"]) h1 {
        font-size: 32px;
    }

    body[data-ni-view="marketing.models"] > .hero {
        padding: 42px 14px 24px;
    }

    body[data-ni-view="marketing.models"] > .content {
        padding-bottom: 60px;
    }

    body[data-ni-view="marketing.models"] .filter-bar > *,
    body[data-ni-view="marketing.models"] .tier-reference-card,
    body[data-ni-view="marketing.models"] .info-banner,
    body[data-ni-skin="northstar"] .container,
    body[data-ni-skin="northstar"] .content,
    body[data-ni-skin="northstar"] main {
        min-width: 0;
        max-width: 100%;
    }

    body[data-ni-view="marketing.models"] .filter-bar input,
    body[data-ni-view="marketing.models"] .filter-bar select {
        width: 100%;
        min-width: 0;
    }

    body[data-ni-skin="northstar"] .container,
    body[data-ni-skin="northstar"] .content {
        overflow-wrap: anywhere;
    }

    body[data-ni-skin="northstar"] table {
        display: block;
        max-width: 100%;
        overflow-x: auto;
    }

    .footer-row {
        align-items: flex-start;
        flex-direction: column;
    }

    .footer-links {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        width: 100%;
    }

    .back-to-top {
        right: 14px;
        bottom: 14px;
    }

    .ns-not-found {
        width: min(calc(100% - 28px), 760px);
        min-height: calc(100vh - 180px);
        padding: 46px 0;
    }

    .ns-not-found-panel {
        padding: 30px 24px;
    }
}

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

    .back-to-top {
        transition: none;
    }
}