/* =========================================================================
   fasten · dual theme
   DARK (default): deepeval black + white, blue accent (nerdapplabs)
   LIGHT: whitecream + dot grid, nerdapplabs teal accent
   Plus Jakarta Sans (sans) + Roboto Mono (mono).
   Dashed borders + corner-bracket accents on key panels.
   ========================================================================= */

:root,
[data-theme="dark"] {
    color-scheme: dark;

    --bg:             #000000;
    --bg-elevated:    #161616;
    --bg-alt:         #050505;
    --panel:          #0d0d0d;
    --panel-hover:    #161616;
    --panel-raised:   #111111;
    --border:         #1f1f1f;
    --border-strong:  #2e2e2e;
    --border-dashed:  #353535;

    --text:           #fafafa;
    --text-soft:      #d2d2d2;
    --text-muted:     #a3a3a3;
    --text-dim:       #7a7a7a;

    /* nerdapplabs teal — same as light, brighter shades for dark-bg legibility */
    --accent:         #2dd4bf;
    --accent-bright:  #5eead4;
    --accent-deep:    #14a594;
    --accent-dim:     #134e4a;
    --accent-soft:    rgba(45, 212, 191, 0.10);
    --accent-ring:    rgba(45, 212, 191, 0.32);
    --accent-text:    #042f2e;

    --white:          #ffffff;
    --grid-dot:       rgba(255, 255, 255, 0.18);
    --btn-primary-shadow: rgba(45, 212, 191, 0.42);
}

[data-theme="light"] {
    color-scheme: light;

    --bg:             #faf8f2;
    --bg-elevated:    #ffffff;
    --bg-alt:         #f3f1ea;
    --panel:          #ffffff;
    --panel-hover:    #f8f6ef;
    --panel-raised:   #ffffff;
    --border:         #e6e3d9;
    --border-strong:  #c9c5b7;
    --border-dashed:  #b8b4a6;

    --text:           #0c0c0c;
    --text-soft:      #3a3a36;
    --text-muted:     #6a6762;
    --text-dim:       #8c8882;

    --accent:         #0f766e;
    --accent-bright:  #14a594;
    --accent-deep:    #0d5f59;
    --accent-dim:     #99f6e4;
    --accent-soft:    rgba(15, 118, 110, 0.10);
    --accent-ring:    rgba(15, 118, 110, 0.3);
    --accent-text:    #ffffff;

    --white:          #ffffff;
    --grid-dot:       rgba(15, 23, 42, 0.13);
    --btn-primary-shadow: rgba(15, 118, 110, 0.35);
}

:root {
    --radius:         6px;
    --radius-sm:      4px;
    --radius-lg:      10px;
    --max-width:      1320px;

    --font-sans:      'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono:      'Roboto Mono', ui-monospace, 'SF Mono', monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'ss01', 'ss02', 'cv11';
    transition: background-color 180ms ease, color 180ms ease;
}

/* Dot grid lives on .section-alt only — alternating sections, not continuous. */

code, pre, .mono { font-family: var(--font-mono); font-feature-settings: 'zero'; }
em { font-style: italic; color: var(--text-soft); }
strong { font-weight: 600; color: var(--text); }

a {
    color: var(--text);
    text-decoration: none;
    transition: color 140ms ease;
}
a:hover { color: var(--accent-bright); }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* =========================================================================
   Corner bracket utility — reusable |_ style accent
   Apply `.brackets` to any relatively positioned element.
   ========================================================================= */

.brackets { position: relative; }
.brackets::before,
.brackets::after {
    position: absolute;
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 14px;
    line-height: 1;
    pointer-events: none;
    opacity: 0.85;
}
.brackets::before {
    content: '┌';
    top: 5px; left: 7px;
}
.brackets::after {
    content: '┘';
    bottom: 5px; right: 7px;
}

/* Four-corner variant — apply .brackets-4 for full corner marks */
.brackets-4 { position: relative; }
.brackets-4::before,
.brackets-4::after {
    position: absolute;
    pointer-events: none;
    width: 12px; height: 12px;
}
.brackets-4::before {
    content: '';
    top: -1px; left: -1px;
    border-top: 2px solid var(--accent);
    border-left: 2px solid var(--accent);
}
.brackets-4::after {
    content: '';
    bottom: -1px; right: -1px;
    border-bottom: 2px solid var(--accent);
    border-right: 2px solid var(--accent);
}

/* =========================================================================
   Nav
   ========================================================================= */

.nav {
    position: sticky; top: 0;
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    padding-bottom: 16px;
    gap: 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 9px;
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.01em;
    color: var(--text);
}
.brand:hover { color: var(--text); }
.logo-svg { color: var(--accent); flex-shrink: 0; }
.brand-name { color: var(--text); }
.brand-tag {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--accent);
    background: var(--accent-soft);
    border: 1px solid var(--accent-ring);
    padding: 2px 7px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    letter-spacing: 0.05em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 26px;
}
.nav-links a {
    font-size: 13.5px;
    color: var(--text-soft);
    font-weight: 500;
}
.nav-links a:hover { color: var(--accent-bright); }

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: transparent;
    border: 1px solid var(--border-strong);
    padding: 6px 13px !important;
    border-radius: var(--radius);
    font-size: 13px !important;
    color: var(--text) !important;
    transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}
.nav-cta:hover {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent-bright) !important;
}

/* Theme toggle */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-strong);
    width: 34px; height: 34px;
    border-radius: var(--radius);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-soft);
    cursor: pointer;
    transition: all 140ms ease;
    padding: 0;
}
.theme-toggle:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
}
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun  { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* =========================================================================
   Buttons
   ========================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 160ms ease;
    letter-spacing: -0.01em;
}
.btn-primary {
    background: var(--accent);
    color: var(--accent-text);
    border-color: var(--accent);
}
.btn-primary:hover {
    background: var(--accent-bright);
    color: var(--accent-text);
    border-color: var(--accent-bright);
    transform: translateY(-1px);
    box-shadow: 0 10px 30px -12px var(--btn-primary-shadow);
}
.btn-ghost {
    background: transparent;
    color: var(--text);
    border-color: var(--border-strong);
}
.btn-ghost:hover {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent-bright);
}

/* =========================================================================
   Hero
   ========================================================================= */

.hero {
    padding: 120px 0 96px;
    border-bottom: 1px solid var(--border);
    position: relative;
}
[data-theme="dark"] .hero,
:root:not([data-theme="light"]) .hero {
    background:
      radial-gradient(ellipse at 20% 0%, rgba(45, 212, 191, 0.10), transparent 55%),
      radial-gradient(ellipse at 85% 85%, rgba(45, 212, 191, 0.05), transparent 55%);
}
[data-theme="light"] .hero {
    background:
      radial-gradient(ellipse at 20% 0%, rgba(15, 118, 110, 0.08), transparent 55%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
    align-items: center;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--accent);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin: 0 0 20px;
    font-weight: 500;
}
.eyebrow::before {
    content: '┌─ ';
    color: var(--accent);
    opacity: 0.65;
}

.hero h1 {
    font-size: clamp(40px, 5.5vw, 64px);
    font-weight: 800;
    line-height: 1.06;
    letter-spacing: -0.03em;
    margin: 0 0 26px;
    color: var(--text);
}
.hero h1 .mono {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.92em;
    letter-spacing: -0.02em;
}
.hero h1 .accent { color: var(--accent); }
.hero h1 .h1-sub {
    display: inline-block;
    font-weight: 500;
    font-size: 0.62em;
    color: var(--text-soft);
    letter-spacing: -0.01em;
    line-height: 1.15;
}

.hero .lead {
    font-size: 18px;
    line-height: 1.55;
    color: var(--text-soft);
    max-width: 560px;
    margin: 0 0 14px;
}
.hero .lead:last-of-type { margin-bottom: 30px; }
.hero .lead-punch {
    border-left: 2px dashed var(--border);
    padding-left: 14px;
    color: var(--text);
}
.hero .lead-punch em {
    font-style: normal;
    color: var(--accent);
    font-weight: 500;
}
.hero .lead-punch-aside {
    color: var(--text-muted);
    font-size: 0.92em;
}

.lead-not {
    list-style: none;
    padding: 0;
    margin: 0 0 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-muted);
}
.lead-not li {
    padding: 3px 9px;
    border: 1px dashed var(--border);
    border-radius: 3px;
}
.lead-not li::before {
    content: "× ";
    color: var(--text-muted);
    opacity: 0.7;
}

.cta-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}
.cta-row.center { justify-content: center; }

.hero-meta {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-muted);
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}
.meta-item svg { color: var(--text-muted); }

/* =========================================================================
   Terminal block
   ========================================================================= */

.terminal {
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow:
        0 40px 80px -30px rgba(0, 0, 0, 0.5),
        0 0 0 1px var(--accent-soft);
    position: relative;
}
.terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px dashed var(--border-dashed);
    background: var(--bg-alt);
}
.terminal-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--border-strong) !important;
}
.terminal-dot:nth-child(1) { background: var(--border-dashed) !important; }
.terminal-dot:nth-child(2) { background: var(--border-strong) !important; }
.terminal-dot:nth-child(3) { background: var(--border) !important; }
.terminal-title {
    margin-left: 12px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
}
.terminal pre {
    margin: 0;
    padding: 24px 26px;
    font-family: var(--font-mono);
    font-size: 13.5px;
    line-height: 1.8;
    overflow-x: auto;
}
.terminal code { color: var(--text); white-space: pre; }

/* Code token colours */
.c  { color: var(--text-dim); font-style: italic; }
.k  { color: var(--text); font-weight: 500; }
.kw { color: var(--accent); font-weight: 500; }
.s  { color: var(--text-soft); }
.b  { color: var(--text-soft); }
.fn { color: var(--text); font-weight: 500; }
.arg{ color: var(--text-muted); }
.t  { color: var(--accent); font-weight: 500; }
.pr { color: var(--accent); font-weight: 500; } /* shell prompt $ */

@media (max-width: 980px) {
    .hero-grid { grid-template-columns: 1fr; gap: 44px; }
}

/* =========================================================================
   Sections
   ========================================================================= */

.section {
    padding: 100px 0;
    border-bottom: 1px solid var(--border);
}
.section-alt {
    background-color: var(--bg-alt);
    background-image: radial-gradient(circle, var(--grid-dot) 1px, transparent 1px);
    background-size: 22px 22px;
}

.section h2 {
    font-size: clamp(30px, 3.8vw, 44px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.022em;
    margin: 0 0 22px;
    max-width: 820px;
    color: var(--text);
}
.section h2 .accent { color: var(--accent); }

.section-lead {
    font-size: 16.5px;
    line-height: 1.62;
    color: var(--text-soft);
    max-width: 780px;
    margin: 0 0 18px;
}
.section-lead.muted { color: var(--text-muted); font-size: 14.5px; }

.lead-bullets {
    list-style: none;
    padding: 0;
    margin: 0 0 36px;
    max-width: 780px;
    display: grid;
    gap: 8px;
    font-size: 15.5px;
    line-height: 1.55;
    color: var(--text-soft);
}
.lead-bullets li {
    position: relative;
    padding-left: 18px;
}
.lead-bullets li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.65em;
    width: 8px;
    height: 1px;
    border-top: 1px dashed var(--accent);
}
.lead-bullets.compare li strong {
    color: var(--text);
    font-weight: 600;
}
.lead-bullets.center-list {
    margin-left: auto;
    margin-right: auto;
    text-align: left;
}
.section-lead code {
    background: var(--panel);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 0.88em;
    color: var(--text);
    border: 1px solid var(--border);
}

.center { text-align: center; }
.center h2, .center .section-lead { margin-left: auto; margin-right: auto; }

/* =========================================================================
   Quickstart cards
   ========================================================================= */

.quickstart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}
.qs-card {
    background: var(--panel);
    border: 1px dashed var(--border-dashed);
    border-radius: var(--radius-lg);
    padding: 28px 28px 26px;
    display: flex;
    flex-direction: column;
    transition: border-color 140ms ease;
}
.qs-card:hover { border-color: var(--text-muted); }
.qs-card-accent {
    border-style: solid;
    border-color: var(--accent-dim);
    background: linear-gradient(180deg, var(--accent-soft), var(--panel) 55%);
    box-shadow: 0 0 0 1px var(--accent-soft);
}
.qs-card-accent:hover { border-color: var(--accent); }

.qs-card-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.qs-card-head svg { color: var(--accent); flex-shrink: 0; }
.qs-card-head h3 {
    font-size: 16.5px;
    font-weight: 600;
    margin: 0;
    color: var(--text);
    letter-spacing: -0.01em;
    flex: 1;
}

.qs-tag {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--text-muted);
    background: transparent;
    border: 1px dashed var(--border-dashed);
    padding: 3px 9px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.08em;
    font-weight: 500;
    text-transform: uppercase;
}
.qs-tag-accent {
    color: var(--white);
    background: var(--accent);
    border: 1px solid var(--accent);
}

.qs-desc {
    font-size: 14px;
    color: var(--text-soft);
    margin: 0 0 18px;
    line-height: 1.55;
}
.qs-desc code {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--text);
}

.qs-code {
    background: var(--bg);
    border: 1px dashed var(--border-dashed);
    border-radius: var(--radius);
    padding: 16px 18px;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 12.5px;
    line-height: 1.75;
    overflow-x: auto;
    flex: 1;
}
[data-theme="light"] .qs-code { background: var(--bg-alt); }
.qs-code code { color: var(--text); white-space: pre; }

.qs-note {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-muted);
    margin: 8px 0 0;
    /* No max-width — let parent container govern. Prose readability is
       protected by section-lead caps and the wider --max-width. */
}
.qs-note svg { color: var(--accent); flex-shrink: 0; margin-top: 4px; }
.qs-note code {
    font-size: 12.5px;
    padding: 1px 5px;
}
.qs-note-body { display: flex; flex-direction: column; gap: 6px; }
.qs-note-body p { margin: 0; }

@media (max-width: 820px) {
    .quickstart-grid { grid-template-columns: 1fr; }
}

/* =========================================================================
   Read section (API + CLI)
   ========================================================================= */

.read-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.read-card {
    background: var(--panel);
    border: 1px dashed var(--border-dashed);
    border-radius: var(--radius-lg);
    padding: 24px 26px;
    display: flex;
    flex-direction: column;
    transition: border-color 140ms ease;
}
.read-card:hover { border-color: var(--text-muted); }

.read-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.read-head svg { color: var(--accent); flex-shrink: 0; }
.read-head h3 {
    font-size: 16.5px;
    font-weight: 600;
    margin: 0;
    color: var(--text);
    letter-spacing: -0.01em;
    flex: 1;
}
.read-desc {
    font-size: 14px;
    color: var(--text-soft);
    margin: 0 0 16px;
    line-height: 1.55;
}
.read-desc code {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--text);
}
.read-block {
    background: var(--bg);
    border: 1px dashed var(--border-dashed);
    border-radius: var(--radius);
    padding: 16px 18px;
    margin: 0 0 14px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    line-height: 1.8;
    overflow-x: auto;
    color: var(--text);
    white-space: pre;
}
.read-block:last-child { margin-bottom: 0; }
[data-theme="light"] .read-block { background: var(--bg-alt); }

@media (max-width: 820px) {
    .read-grid { grid-template-columns: 1fr; }
}

/* =========================================================================
   Pillars
   ========================================================================= */

.pillar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
}
.pillar {
    background: var(--panel);
    border: 1px dashed var(--border-dashed);
    border-radius: var(--radius);
    padding: 24px 22px 22px;
    transition: border-color 140ms ease, background 140ms ease;
}
.pillar:hover { background: var(--panel-hover); border-color: var(--text-muted); }
.pillar-accent {
    border-style: solid;
    border-color: var(--accent-dim);
    background: linear-gradient(180deg, var(--accent-soft), var(--panel) 70%);
}
.pillar-accent:hover { border-color: var(--accent); }
.pillar-icon { color: var(--accent); margin-bottom: 14px; }
.pillar h3 {
    font-size: 15.5px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 0 0 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.pillar .before {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--text-muted);
    margin: 0 0 10px;
    line-height: 1.5;
}
.pillar .after {
    font-size: 13.5px;
    color: var(--text);
    margin: 0;
    line-height: 1.55;
}
.pill {
    font-family: var(--font-mono);
    font-size: 9.5px;
    letter-spacing: 0.12em;
    padding: 2px 7px;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: var(--accent-text);
    text-transform: uppercase;
    font-weight: 600;
}

/* =========================================================================
   Anchor grid
   ========================================================================= */

.anchor-master {
    border: 1px solid var(--accent-dim);
    border-radius: var(--radius);
    background: linear-gradient(180deg, var(--accent-soft), var(--panel) 70%);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.anchor-master-head {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 10px 14px;
    padding: 4px 6px 12px;
    border-bottom: 1px dashed var(--border-dashed);
}
.anchor-master-head .key {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--accent-bright);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 600;
}
.anchor-master-head code {
    color: var(--text);
    font-size: 13.5px;
    background: transparent;
    padding: 0;
    font-weight: 500;
}
.anchor-master-head small {
    color: var(--text-muted);
    font-size: 11.5px;
    font-family: var(--font-mono);
}
.anchor-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}
@media (max-width: 720px) {
    .anchor-grid { grid-template-columns: 1fr; }
}
.anchor {
    background: var(--panel);
    border: 1px dashed var(--border-dashed);
    border-radius: var(--radius);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 7px;
    transition: border-color 140ms ease;
}
.anchor:hover { border-color: var(--text-muted); }
.anchor .key {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--accent);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 600;
}
.anchor code {
    color: var(--text);
    font-size: 13.5px;
    background: transparent;
    padding: 0;
    font-weight: 500;
}
.anchor small {
    color: var(--text-muted);
    font-size: 11.5px;
    font-family: var(--font-mono);
    line-height: 1.5;
}
/* =========================================================================
   Tabs + code blocks
   ========================================================================= */

.tabs {
    display: flex;
    gap: 2px;
    border-bottom: 1px dashed var(--border-dashed);
    overflow-x: auto;
    scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tab {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 13.5px;
    font-weight: 500;
    padding: 12px 20px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 140ms ease;
    margin-bottom: -1px;
    white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.code-block {
    display: none;
    background: var(--bg-elevated);
    border: 1px dashed var(--border-dashed);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    padding: 24px 26px;
    font-family: var(--font-mono);
    font-size: 13.5px;
    line-height: 1.8;
    overflow-x: auto;
    margin: 0;
}
.code-block.active { display: block; }
.code-block code { color: var(--text); white-space: pre; }

/* =========================================================================
   Agent uses
   ========================================================================= */

.agent-uses {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}
.use {
    background: var(--panel);
    border: 1px dashed var(--border-dashed);
    border-radius: var(--radius);
    padding: 24px 22px;
    transition: border-color 140ms ease;
}
.use svg { color: var(--accent); margin-bottom: 14px; }
.use:hover { border-color: var(--accent-dim); }
.use h4 {
    font-size: 14.5px;
    font-weight: 600;
    margin: 0 0 8px;
    color: var(--text);
    letter-spacing: -0.01em;
}
.use p {
    margin: 0;
    font-size: 13.5px;
    line-height: 1.55;
    color: var(--text-soft);
}

/* =========================================================================
   Languages grid
   ========================================================================= */

.lang-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
@media (max-width: 820px) { .lang-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .lang-grid { grid-template-columns: 1fr; } }
.lang-card {
    background: var(--panel);
    border: 1px dashed var(--border-dashed);
    border-radius: var(--radius);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: border-color 140ms ease;
}
.lang-card:hover { border-color: var(--text-muted); }
.lang-card-deferred { opacity: 0.55; }
.lang-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.lang-head strong {
    font-size: 14.5px;
    letter-spacing: -0.01em;
}
.lang-status {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    background: transparent;
    border: 1px dashed var(--border-dashed);
    text-transform: uppercase;
    font-weight: 500;
}
.lang-status-ref {
    color: var(--accent-text);
    background: var(--accent);
    border-color: var(--accent);
    font-weight: 600;
    border-style: solid;
}
.lang-status-deferred {
    color: var(--text-dim);
    border-color: var(--border);
}
.lang-card code {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-soft);
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
}
[data-theme="light"] .lang-card code { background: var(--bg-alt); }
.lang-card code.muted { color: var(--text-dim); }

/* =========================================================================
   Compare table
   ========================================================================= */

.compare-table {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--panel);
}
.compare-table .row {
    display: grid;
    grid-template-columns: 1.2fr 130px 2fr;
    gap: 20px;
    padding: 17px 22px;
    border-bottom: 1px dashed var(--border-dashed);
    align-items: center;
    font-size: 13.5px;
}
.compare-table .row:last-child { border-bottom: none; }
.compare-table .head {
    background: var(--bg-elevated);
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 500;
    padding: 13px 22px;
    border-bottom: 1px solid var(--border);
}
.compare-table .yes,
.compare-table .no,
.compare-table .kept,
.compare-table .opt {
    font-family: var(--font-mono);
    font-size: 11.5px;
    font-weight: 500;
    letter-spacing: 0.06em;
}
.compare-table .yes  { color: var(--accent-bright); }
.compare-table .no   { color: var(--text-dim); }
.compare-table .kept { color: var(--text-soft); text-transform: uppercase; font-size: 11px; letter-spacing: 0.1em; }
.compare-table .opt  { color: var(--accent);     text-transform: uppercase; font-size: 11px; letter-spacing: 0.1em; }
.compare-table .row > div:last-child { color: var(--text-soft); }

@media (max-width: 720px) {
    .compare-table .row { grid-template-columns: 1fr; gap: 6px; }
}

/* =========================================================================
   Why we built this
   ========================================================================= */

.why-story {
    list-style: none;
    counter-reset: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 24px;
    /* No max-width — let .container govern, matches every other section. */
}

.why-step {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 20px;
    padding: 22px 26px;
    border: 1px dashed var(--border);
    border-radius: 4px;
    background: var(--panel);
}

.why-num {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.04em;
    padding-top: 2px;
}

.why-step h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 12px;
    letter-spacing: -0.01em;
}

.why-step p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-soft);
    margin: 0 0 14px;
}
.why-step p:last-child { margin-bottom: 0; }
.why-step strong { color: var(--text); font-weight: 600; }
.why-step code {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--text);
}

.why-stack {
    list-style: none;
    padding: 0;
    margin: 0 0 4px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-muted);
}
.why-stack li {
    padding: 3px 9px;
    border: 1px dashed var(--border);
    border-radius: 3px;
}

.why-quote {
    margin: 0 0 12px;
    padding: 10px 16px;
    border-left: 2px solid var(--accent);
    background: var(--bg);
    font-style: italic;
    color: var(--text);
    font-size: 15.5px;
    line-height: 1.55;
}
.why-aside {
    font-size: 13.5px;
    color: var(--text-muted);
}

.why-built,
.why-os {
    list-style: none;
    padding: 0;
    margin: 0 0 14px;
    display: grid;
    gap: 6px;
    font-size: 14.5px;
    line-height: 1.5;
    color: var(--text-soft);
}
.why-built li,
.why-os li {
    position: relative;
    padding-left: 16px;
}
.why-built li::before,
.why-os li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.65em;
    width: 8px;
    height: 1px;
    border-top: 1px dashed var(--accent);
}

.why-attempts {
    list-style: none;
    counter-reset: attempt;
    padding: 0;
    margin: 0 0 18px;
    display: grid;
    gap: 14px;
}
.why-attempts > li {
    counter-increment: attempt;
    display: grid;
    gap: 4px;
    padding-bottom: 14px;
    border-bottom: 1px dashed var(--border);
}
.why-attempts > li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.attempt-label {
    font-size: 14.5px;
    font-weight: 600;
    color: var(--text);
}
.attempt-label::before {
    content: counter(attempt, decimal-leading-zero) "  ";
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 12px;
    color: var(--accent);
    margin-right: 4px;
    letter-spacing: 0.04em;
}
.attempt-body {
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--text-soft);
    display: block;
}
.attempt-body em {
    color: var(--text-muted);
    font-style: italic;
    font-weight: 400;
}

.why-punch {
    font-size: 15px;
    color: var(--text);
    border-top: 1px dashed var(--border);
    padding-top: 12px;
    margin-top: 6px;
}

.why-os-label {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    margin: 18px 0 8px !important;
}

@media (max-width: 720px) {
    .why-step {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 18px 20px;
    }
}

/* =========================================================================
   FAQ
   ========================================================================= */

.faq-list {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--panel);
}
.faq-item {
    border-bottom: 1px dashed var(--border-dashed);
}
.faq-item:last-child { border-bottom: none; }

.faq-item summary {
    list-style: none;
    padding: 18px 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--text);
    letter-spacing: -0.01em;
    transition: background 140ms ease, color 140ms ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::marker { content: ''; }
.faq-item summary > span { flex: 1; }
.faq-item summary:hover { background: var(--panel-hover); }

.faq-chevron {
    width: 16px; height: 16px;
    color: var(--text-muted);
    transition: transform 220ms ease, color 140ms ease;
    flex-shrink: 0;
}
.faq-item[open] summary { color: var(--accent); background: var(--panel-hover); }
.faq-item[open] .faq-chevron { transform: rotate(180deg); color: var(--accent); }

.faq-item p {
    padding: 0 24px 20px;
    margin: 0;
    color: var(--text-soft);
    font-size: 13.5px;
    line-height: 1.65;
}
.faq-item p code {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--text);
}

/* =========================================================================
   Open-core cards
   ========================================================================= */

.opencore-h2 {
    max-width: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    column-gap: 0.35em;
    row-gap: 6px;
    font-size: clamp(26px, 3.2vw, 38px);
}
.opencore-h2 > span {
    white-space: nowrap;
}

.opencore-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    margin-top: 36px;
    max-width: 980px;
    margin-left: auto;
    margin-right: auto;
}

.opencore-card {
    display: flex;
    flex-direction: column;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 28px 26px;
    position: relative;
}
.opencore-card-paid {
    border-color: var(--accent-dim);
    background: linear-gradient(180deg, var(--panel) 0%, var(--bg) 100%);
}

.opencore-head {
    margin-bottom: 18px;
    padding-bottom: 16px;
    border-bottom: 1px dashed var(--border);
}
.opencore-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    border: 1px dashed var(--border);
    padding: 2px 8px;
    border-radius: 3px;
    margin-bottom: 10px;
}
.opencore-tag-paid {
    color: var(--accent);
    border-color: var(--accent-dim);
    border-style: solid;
}
.opencore-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 6px;
    letter-spacing: -0.01em;
}
.opencore-tagline {
    font-size: 14px;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}

.opencore-list {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
    display: grid;
    gap: 10px;
    font-size: 14.5px;
    line-height: 1.55;
    color: var(--text-soft);
    flex-grow: 1;
}
.opencore-list li {
    position: relative;
    padding-left: 18px;
}
.opencore-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.65em;
    width: 8px;
    height: 1px;
    border-top: 1px dashed var(--accent);
}
.opencore-list code {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 0.9em;
    color: var(--text);
}

.opencore-cta {
    align-self: flex-start;
}

@media (max-width: 760px) {
    .opencore-cards { grid-template-columns: 1fr; gap: 18px; }
}

/* =========================================================================
   Footer
   ========================================================================= */

.footer {
    padding: 36px 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-brand .logo-svg { color: var(--accent); }
.footer-links {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
}
.footer-links a { color: var(--text-soft); }
.footer-links a:hover { color: var(--accent-bright); }
.muted { color: var(--text-muted); }

/* =========================================================================
   Responsive
   ========================================================================= */

@media (max-width: 960px) {
    .nav-links a:not(.nav-cta) { display: none; }
}
@media (max-width: 520px) {
    .hero { padding: 80px 0 60px; }
    .section { padding: 68px 0; }
    .hero-meta { font-size: 11.5px; gap: 16px; }
}