styles.css

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ══════════════════════════════════════════════
   DESIGN TOKENS
══════════════════════════════════════════════ */
:root {
    --bg: #03030A;
    --bg-alt: #070712;
    --bg-card: #0D0D1A;
    --bg-card-2: #11111F;
    --bg-nav: rgba(3, 3, 10, 0.6);
    --bg-code: #090915;

    --border: rgba(255, 255, 255, 0.12);
    --border-md: rgba(255, 255, 255, 0.22);
    --border-hi: rgba(255, 255, 255, 0.40);

    --t100: #FFFFFF;
    --t80: #FAFAFB;
    --t50: #D4D4E0;
    --t30: #9595A8;
    --t-strong: #FFFFFF;
    --bg-strong: rgba(255, 255, 255, 0.08);

    --accent: #3B82F6;
    --accent-dim: rgba(59, 130, 246, 0.12);
    --accent-glow: rgba(59, 130, 246, 0.35);
    --purple: #A855F7;
    --purple-dim: rgba(168, 85, 247, 0.12);
    --green: #4ADE80;
    --green-dim: rgba(74, 222, 128, 0.12);
    --amber: #F59E0B;
    --red: #EF4444;

    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.5), 0 4px 20px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.06);
    --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.6), 0 4px 12px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.08);
    --shadow-lg: 0 32px 80px rgba(0, 0, 0, 0.8), 0 12px 36px rgba(0, 0, 0, 0.5), inset 0 1px 2px rgba(255, 255, 255, 0.1);
    --shadow-glow: 0 0 60px var(--accent-glow);

    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);

    /* Glassmorphism Tokens */
    --glass-bg: rgba(13, 13, 26, 0.65);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-highlight: rgba(255, 255, 255, 0.12);
}

/* Light theme */
[data-theme="light"] {
    --bg: #F2F2F7;
    --bg-alt: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-card-2: #F8F8FA;
    --bg-nav: rgba(242, 242, 247, 0.7);
    --bg-code: #1C1C1E;
    --border: rgba(0, 0, 0, 0.14);
    --border-md: rgba(0, 0, 0, 0.24);
    --border-hi: rgba(0, 0, 0, 0.36);
    --t100: #000000;
    --t80: #1A1A1A;
    --t50: #444446;
    --t30: #737373;
    --t-strong: #000000;
    --bg-strong: rgba(0, 0, 0, 0.05);
    --accent: #0071E3;
    --accent-dim: rgba(0, 113, 227, 0.08);
    --accent-glow: rgba(0, 113, 227, 0.2);
    --purple: #9B59B6;
    --purple-dim: rgba(155, 89, 182, 0.09);
    --green: #1D9A3F;
    --green-dim: rgba(29, 154, 63, 0.08);
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.04), 0 6px 24px rgba(0, 0, 0, 0.03), inset 0 1px 1px rgba(255, 255, 255, 1);
    --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04), inset 0 1px 1px rgba(255, 255, 255, 1);
    --shadow-lg: 0 32px 80px rgba(0, 0, 0, 0.08), 0 12px 36px rgba(0, 0, 0, 0.06), inset 0 1px 2px rgba(255, 255, 255, 1);
}

@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
        --bg: #F2F2F7;
        --bg-alt: #FFFFFF;
        --bg-card: #FFFFFF;
        --bg-card-2: #F8F8FA;
        --bg-nav: rgba(242, 242, 247, 0.7);
        --bg-code: #1C1C1E;
        --border: rgba(0, 0, 0, 0.14);
        --border-md: rgba(0, 0, 0, 0.24);
        --border-hi: rgba(0, 0, 0, 0.36);
        --t100: #000000;
        --t80: #1A1A1A;
        --t50: #444446;
        --t30: #737373;
        --t-strong: #000000;
        --bg-strong: rgba(0, 0, 0, 0.05);
        --accent: #0071E3;
        --accent-dim: rgba(0, 113, 227, 0.08);
        --accent-glow: rgba(0, 113, 227, 0.2);
        --purple: #9B59B6;
        --purple-dim: rgba(155, 89, 182, 0.09);
        --green: #1D9A3F;
        --green-dim: rgba(29, 154, 63, 0.08);
        --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.04), 0 6px 24px rgba(0, 0, 0, 0.03), inset 0 1px 1px rgba(255, 255, 255, 1);
        --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04), inset 0 1px 1px rgba(255, 255, 255, 1);
        --shadow-lg: 0 32px 80px rgba(0, 0, 0, 0.08), 0 12px 36px rgba(0, 0, 0, 0.06), inset 0 1px 2px rgba(255, 255, 255, 1);
    }
}

/* ══════════════════════════════════════════════
   RESET
══════════════════════════════════════════════ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--t80);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    line-height: 1.6;
    transition: background .5s var(--ease), color .5s var(--ease);
}

h1,
h2,
h3,
h4,
h5,
h6,
.nav-logo {
    font-family: 'Outfit', sans-serif;
}

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

strong {
    color: var(--t-strong);
    font-weight: 700;
    background: var(--bg-strong);
    padding: 2px 6px;
    border-radius: 4px;
}

em {
    color: var(--t80);
    font-style: italic;
}

code {
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg-code);
    color: #a8daff;
    padding: .12em .42em;
    border-radius: 5px;
    font-size: .85em;
}

[data-theme="light"] code {
    color: #0055c7;
    background: rgba(0, 85, 199, 0.07);
}

/* ══════════════════════════════════════════════
   PROGRESS BAR
══════════════════════════════════════════════ */
#progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    z-index: 9999;
    background: linear-gradient(90deg, var(--accent), var(--purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .1s linear;
}

/* ══════════════════════════════════════════════
   FIXED BACKGROUNDS
══════════════════════════════════════════════ */
.bg-layer {
    position: fixed;
    inset: 0;
    z-index: -10;
    pointer-events: none;
    overflow: hidden;
}

.bg-grid {
    position: absolute;
    inset: -50%;
    width: 200%;
    height: 200%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(ellipse 70% 70% at 50% 20%, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 20%, black 30%, transparent 80%);
    animation: gridPan 80s linear infinite;
}

[data-theme="light"] .bg-grid {
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px);
}

@keyframes gridPan {
    to {
        transform: translate(-44px, -44px);
    }
}

/* Gradient noise grain overlay */
.bg-grain {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    background-size: 200px 200px;
    opacity: 0.025;
    pointer-events: none;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.orb-1 {
    width: 1100px;
    height: 1100px;
    top: -450px;
    left: -300px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 65%);
    filter: blur(80px);
    animation: drift1 22s ease-in-out infinite alternate;
}

.orb-2 {
    width: 800px;
    height: 800px;
    top: 20vh;
    right: -250px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.10) 0%, transparent 65%);
    filter: blur(70px);
    animation: drift2 26s ease-in-out infinite alternate;
}

.orb-3 {
    width: 600px;
    height: 600px;
    bottom: -200px;
    left: 30%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.07) 0%, transparent 65%);
    filter: blur(60px);
    animation: drift1 30s ease-in-out infinite alternate-reverse;
}

@keyframes drift1 {
    to {
        transform: translate(80px, 60px) scale(1.15);
    }
}

@keyframes drift2 {
    to {
        transform: translate(-60px, 80px) scale(1.2);
    }
}

.cursor-orb {
    position: fixed;
    top: 0;
    left: 0;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 65%);
    mix-blend-mode: screen;
    will-change: transform;
    opacity: .65;
}

[data-theme="light"] .cursor-orb {
    mix-blend-mode: multiply;
    opacity: .35;
}

/* ══════════════════════════════════════════════
   NAV
══════════════════════════════════════════════ */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: center;
    padding: 0 24px;
    overflow: visible;
}

.nav-inner {
    margin-top: 16px;
    background: var(--bg-nav);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    padding: 7px 8px 7px 22px;
    display: flex;
    align-items: center;
    gap: 0;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transition: all 0.4s var(--ease);
    max-width: 1140px;
    width: 100%;
    overflow: visible;
    position: relative;
}

.nav-inner::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(to bottom, var(--glass-highlight), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.nav-scrolled .nav-inner {
    margin-top: 8px;
    border-color: var(--border-hi);
    box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.nav-logo {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -.05em;
    color: var(--t100);
    white-space: nowrap;
    padding-right: 16px;
}

.accent-dot {
    color: var(--accent);
}

.nav-sep {
    width: 1px;
    height: 18px;
    background: var(--border-md);
    margin-right: 16px;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
}

.nav-links a {
    color: var(--t50);
    font-size: .84rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 999px;
    transition: all .25s var(--ease);
    border: 1px solid transparent;
}

.nav-links a:hover {
    color: var(--t100);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.nav-links a.nav-active {
    color: var(--t100);
    background: var(--border-md);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    margin-left: auto;
    padding-left: 12px;
}

.theme-toggle {
    background: var(--border);
    border: none;
    cursor: pointer;
    color: var(--t50);
    padding: 8px 10px;
    border-radius: 999px;
    font-size: .95rem;
    line-height: 1;
    transition: color .2s, background .2s;
}

.theme-toggle:hover {
    color: var(--t100);
    background: var(--border-md);
}

.theme-icon-moon {
    display: none;
}

[data-theme="dark"] .theme-icon-sun {
    display: none;
}

[data-theme="dark"] .theme-icon-moon {
    display: inline;
}

.btn-cta {
    background: var(--t100);
    color: var(--bg);
    padding: 9px 20px;
    border-radius: 999px;
    font-weight: 700;
    font-size: .82rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    transition: all .3s var(--ease);
    flex-shrink: 0;
}

.btn-cta:hover {
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 6px 20px rgba(255, 255, 255, .15);
}

[data-theme="light"] .btn-cta:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, .15);
}

.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--t100);
    cursor: pointer;
    padding: 8px;
    font-size: 1.2rem;
}

/* ══════════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════════ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0) 100%), var(--accent);
    color: #fff;
    padding: 14px 32px;
    border-radius: 99px;
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 4px 20px var(--accent-glow), inset 0 1px 1px rgba(255, 255, 255, 0.25);
    transition: all .35s var(--ease);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px var(--accent-glow), inset 0 1px 2px rgba(255, 255, 255, 0.35);
}

.btn-primary:active {
    transform: translateY(0) scale(.97);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--t80);
    padding: 14px 32px;
    border-radius: 99px;
    font-weight: 500;
    font-size: 1rem;
    border: 1px solid var(--border-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.02);
    transition: all .3s var(--ease);
}

.btn-ghost:hover {
    background: var(--border);
    border-color: var(--border-hi);
    color: var(--t100);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* ══════════════════════════════════════════════
   SCROLL REVEAL (Enhanced)
══════════════════════════════════════════════ */
.reveal,
.reveal-line,
.reveal-scale,
.reveal-left,
.reveal-right,
.reveal-rotate,
.reveal-blur,
.reveal-down {
    opacity: 0;
    filter: blur(8px);
    transition: opacity 1.5s cubic-bezier(0.19, 1, 0.22, 1),
        transform 1.5s cubic-bezier(0.19, 1, 0.22, 1),
        filter 1.3s cubic-bezier(0.19, 1, 0.22, 1);
    will-change: opacity, transform, filter;
}

.reveal,
.reveal-line {
    transform: translate3d(0, 60px, 0) scale(0.96);
}

.reveal-down {
    transform: translate3d(0, -60px, 0) scale(0.96);
}

.reveal-scale {
    transform: scale(0.8) translate3d(0, 40px, 0);
    filter: blur(16px);
}

.reveal-left {
    transform: translate3d(-80px, 0, 0);
}

.reveal-right {
    transform: translate3d(80px, 0, 0);
}

.reveal-rotate {
    transform: perspective(1200px) rotateX(-15deg) translate3d(0, 60px, 0) scale(0.95);
}

.reveal-blur {
    transform: scale(1.05);
    filter: blur(24px);
}

.reveal.is-visible,
.reveal-line.is-visible,
.reveal-scale.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-rotate.is-visible,
.reveal-blur.is-visible,
.reveal-down.is-visible {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1) rotateX(0deg);
    filter: blur(0);
}


/* Floating interactive elements for storytelling */
.float-elem {
    animation: floating 6s ease-in-out infinite;
}
@keyframes floating {
    0% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
    100% { transform: translateY(0); }
}

.delay-1 {
    transition-delay: .1s;
}

.delay-2 {
    transition-delay: .2s;
}

.delay-3 {
    transition-delay: .3s;
}

.delay-4 {
    transition-delay: .4s;
}

.delay-5 {
    transition-delay: .5s;
}

/* ══════════════════════════════════════════════
   HERO
══════════════════════════════════════════════ */
#hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.55;
}

.section-hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 160px 24px 120px;
    position: relative;
    overflow: hidden;
}

.section-hero>* {
    position: relative;
    z-index: 1;
}

/* Eyebrow chip bar */
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-md);
    border-radius: 999px;
    padding: 5px 6px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-sm), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
}

[data-theme="light"] .hero-eyebrow {
    background: rgba(255, 255, 255, .75);
}

.eyebrow-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: .8rem;
    font-weight: 500;
    line-height: 1;
    white-space: nowrap;
    transition: all .25s var(--ease);
}

.chip-paper {
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid rgba(10, 132, 255, .22);
}

.chip-paper:hover {
    background: rgba(10, 132, 255, .18);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px var(--accent-glow);
}

[data-theme="light"] .chip-paper {
    color: #0055c7;
    background: rgba(0, 85, 199, .09);
    border-color: rgba(0, 85, 199, .2);
}

.chip-params {
    color: var(--t50);
    background: rgba(255, 255, 255, .04);
    border: 1px solid var(--border);
}

[data-theme="light"] .chip-params {
    background: rgba(0, 0, 0, .04);
}

.chip-status {
    color: var(--green);
    background: var(--green-dim);
    border: 1px solid rgba(48, 209, 88, .2);
}

[data-theme="light"] .chip-status {
    color: var(--green);
    border-color: rgba(29, 154, 63, .2);
}

.eyebrow-divider {
    width: 1px;
    height: 14px;
    background: var(--border-md);
    flex-shrink: 0;
}

.dot-live {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 8px var(--green);
    animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 6px var(--green);
    }

    50% {
        box-shadow: 0 0 16px var(--green), 0 0 32px rgba(48, 209, 88, .2);
    }
}

/* Main heading */
.hero-title {
    font-size: clamp(4.5rem, 12vw, 9rem);
    line-height: .93;
    letter-spacing: -.065em;
    font-weight: 800;
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 28px;
}

.line-plain {
    display: block;
    color: var(--t100);
}

.line-gradient {
    display: block;
    background: linear-gradient(110deg, var(--accent) 0%, var(--purple) 50%, var(--green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientShift 5s ease infinite alternate;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    100% {
        background-position: 100% 50%;
    }
}

.hero-title .reveal-line {
    display: block;
}

.hero-tagline {
    font-size: clamp(1.15rem, 2.5vw, 1.7rem);
    color: var(--t50);
    font-weight: 400;
    letter-spacing: -.02em;
    line-height: 1.35;
    margin-bottom: 20px;
}

.hero-abstract {
    max-width: 740px;
    font-size: 1.15rem;
    color: var(--t50);
    line-height: 1.72;
    margin-bottom: 48px;
}

.hero-cta-group {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 80px;
}

/* Stats Strip */
.hero-stats {
    display: flex;
    align-items: stretch;
    background: var(--bg-card);
    border: 1px solid var(--border-md);
    border-top: 1px solid var(--accent);
    border-radius: 24px;
    margin-bottom: 80px;
    overflow: hidden;
    box-shadow: var(--shadow-md), 0 0 40px rgba(59, 130, 246, 0.08);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 44px;
    flex: 1;
    position: relative;
    transition: background .3s, transform .3s var(--ease);
}

.stat-item:hover {
    background: var(--bg-card-2);
    transform: translateY(-3px);
}

.stat-item+.stat-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background: var(--border-md);
}

.stat-value {
    font-size: 2.6rem;
    font-weight: 800;
    letter-spacing: -.05em;
    line-height: 1;
    margin-bottom: 7px;
    font-variant-numeric: tabular-nums;
    background: linear-gradient(110deg, var(--t100) 0%, var(--t50) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-unit {
    color: var(--accent);
}

.stat-label {
    font-size: .75rem;
    color: var(--t50);
    text-transform: uppercase;
    letter-spacing: .09em;
}

/* Code Window */
.hero-code-window {
    width: 100%;
    max-width: 840px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-md);
    background: #12121a;
    text-align: left;
}

.code-window-bar {
    background: #0d0d14;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, .05);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot.r {
    background: #FF5F57;
}

.code-dot.y {
    background: #FEBC2E;
}

.code-dot.g {
    background: #28C840;
}

.code-title {
    color: rgba(255, 255, 255, .35);
    font-family: 'JetBrains Mono', monospace;
    font-size: .78rem;
    flex: 1;
    text-align: center;
}

.code-window-body {
    padding: 28px 32px;
    overflow-x: auto;
}

.code-window-body pre code {
    background: transparent;
    padding: 0;
    font-size: .92rem;
    line-height: 1.85;
    color: #cdd6f4;
}

.ck {
    color: #89b4fa;
}

.cf {
    color: #89dceb;
}

.cs {
    color: #6c7086;
}

.cm {
    color: #585b70;
    font-style: italic;
}

.cv {
    color: #cba6f7;
}

.cn {
    color: #fab387;
}

/* ══════════════════════════════════════════════
   SECTION SCAFFOLD
══════════════════════════════════════════════ */
.section-wrap {
    padding: 160px 24px;
    max-width: 1120px;
    margin: 0 auto;
    position: relative;
}

.section-wrap.alt {
    max-width: 100%;
    background: var(--bg-alt);
    border-top: 1px solid var(--border-md);
    border-bottom: 1px solid var(--border-md);
    padding-left: max(24px, calc((100vw - 1120px)/2));
    padding-right: max(24px, calc((100vw - 1120px)/2));
    box-shadow: 0 -40px 100px rgba(0, 0, 0, 0.5), 0 40px 100px rgba(0, 0, 0, 0.5);
    z-index: 10;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
}

.section-label::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--accent);
    display: block;
}

.section-title {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(2.8rem, 6vw, 4.8rem);
    font-weight: 800;
    letter-spacing: -.035em;
    line-height: 1.04;
    color: var(--t100);
    margin-bottom: 28px;
}

.section-lead {
    font-size: 1.3rem;
    color: var(--t50);
    max-width: 680px;
    line-height: 1.65;
    margin-bottom: 80px;
}

/* ══════════════════════════════════════════════
   TILT CARDS (universal)
══════════════════════════════════════════════ */
.tilt-card {
    background: linear-gradient(145deg, rgba(20, 20, 35, 0.5) 0%, rgba(10, 10, 20, 0.7) 100%);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    border: 1px solid var(--border-md);
    border-top: 1px solid var(--border-hi);
    border-radius: 24px;
    padding: 40px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transform-style: preserve-3d;
    transition: border-color .3s, box-shadow .3s, transform .6s var(--ease);
}

[data-theme="light"] .tilt-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.85) 0%, rgba(240, 240, 245, 0.65) 100%);
}

.tilt-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.06);
}

.card-glow {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity .4s;
    z-index: 0;
    border-radius: inherit;
}

.tilt-card:hover .card-glow {
    opacity: 1;
}

.tilt-card>* {
    position: relative;
    z-index: 1;
}

/* ══════════════════════════════════════════════
   SECTION 1 — BOTTLENECK
══════════════════════════════════════════════ */
.n-cards {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 56px;
}

.n-card {
    display: flex;
    gap: 48px;
    align-items: flex-start;
    padding: 44px 48px;
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg) 100%);
    border: 1px solid var(--border);
    border-top: 1px solid var(--border-md);
    box-shadow: var(--shadow-md);
    transition: background .3s, border-color .3s, transform .4s var(--ease), box-shadow .4s var(--ease);
}

.n-card:first-child {
    border-radius: 20px 20px 4px 4px;
}

.n-card:last-child {
    border-radius: 4px 4px 20px 20px;
}

.n-card:not(:last-child) {
    border-bottom: none;
}

.n-card:hover {
    background: var(--bg-card-2);
    border-color: var(--border-md);
    transform: translateX(6px);
}

.n-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--border-md);
    line-height: 1;
    flex-shrink: 0;
    min-width: 72px;
    transition: color .3s;
}

.n-card:hover .n-num {
    color: var(--accent);
}

.n-card h3 {
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.03em;
    margin-bottom: 14px;
}

.n-card p {
    font-size: 1.1rem;
    color: var(--t50);
    line-height: 1.7;
}

/* ══════════════════════════════════════════════
   CALLOUT BOXES
══════════════════════════════════════════════ */
.callout {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 36px 40px;
    border-radius: 20px;
    margin-top: 48px;
    background: linear-gradient(135deg, var(--accent-dim) 0%, rgba(59, 130, 246, 0.04) 100%);
    border: 1px solid rgba(10, 132, 255, .2);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.08), 0 8px 24px rgba(0, 0, 0, 0.3);
}

.callout.purple {
    background: linear-gradient(135deg, var(--purple-dim) 0%, rgba(168, 85, 247, 0.04) 100%);
    border-color: rgba(191, 90, 242, .2);
}

.callout-ico {
    font-size: 1.8rem;
    flex-shrink: 0;
    line-height: 1.2;
}

.callout h4 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.02em;
    margin-bottom: 10px;
}

.callout p {
    font-size: 1.05rem;
    color: var(--t50);
    line-height: 1.7;
}

[data-theme="light"] .callout.purple {
    background: rgba(155, 89, 182, .07);
    border-color: rgba(155, 89, 182, .2);
}

/* ══════════════════════════════════════════════
   CONTRIB GRID
══════════════════════════════════════════════ */
.contrib-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
}

.contrib-card {
    flex: 1 1 300px;
    max-width: 380px;
}

.wide3 {
    flex: 1 1 100%;
    max-width: 100%;
}

.contrib-card {
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.contrib-icon-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding-bottom: 28px;
    margin-bottom: auto;
}

.contrib-icon {
    font-size: 2.2rem;
    color: var(--accent);
    line-height: 1;
}

.contrib-tag {
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .09em;
    color: var(--t50);
    background: var(--border);
    border-radius: 999px;
    padding: 5px 12px;
}

.contrib-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.03em;
    margin-bottom: 12px;
}

.contrib-card p {
    font-size: 1rem;
    color: var(--t50);
    line-height: 1.65;
}

/* ══════════════════════════════════════════════
   APP BLOCKS (Applications 3.x)
══════════════════════════════════════════════ */
.app-block {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 64px;
    padding: 72px 0;
    border-bottom: 1px solid var(--border);
}

.app-block:last-of-type {
    border-bottom: none;
}

.app-meta {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding-top: 8px;
}

.app-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: .82rem;
    color: var(--accent);
    font-weight: 700;
}

.app-rule {
    width: 28px;
    height: 2px;
    background: var(--border-md);
}

.app-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: .75rem;
    font-weight: 700;
    color: var(--green);
    background: var(--green-dim);
    border: 1px solid rgba(48, 209, 88, .2);
    border-radius: 8px;
    padding: 6px 10px;
    line-height: 1.3;
}

[data-theme="light"] .app-badge {
    color: var(--green);
    border-color: rgba(29, 154, 63, .2);
}

.app-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.035em;
    margin-bottom: 6px;
}

.app-sub {
    font-size: .95rem;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 20px;
}

.app-content>p {
    font-size: 1.1rem;
    color: var(--t50);
    line-height: 1.72;
    margin-bottom: 36px;
}

.detail-row {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 20px;
    padding: 24px 0;
    border-top: 1px solid var(--border);
}

.detail-label {
    font-size: .72rem;
    font-weight: 700;
    color: var(--t50);
    text-transform: uppercase;
    letter-spacing: .09em;
    padding-top: 4px;
}

.detail-text {
    font-size: 1.05rem;
    color: var(--t50);
    line-height: 1.68;
}

/* ══════════════════════════════════════════════
   BENCHMARKS
══════════════════════════════════════════════ */
.bench-wrap {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-md);
    box-shadow: var(--shadow-md);
    margin-bottom: 48px;
}

.bench-table {
    width: 100%;
    border-collapse: collapse;
}

.bench-table th {
    background: var(--bg-card);
    padding: 18px 28px;
    text-align: left;
    font-size: .75rem;
    font-weight: 700;
    color: var(--t50);
    text-transform: uppercase;
    letter-spacing: .09em;
    border-bottom: 1px solid var(--border);
}

.bench-table td {
    padding: 22px 28px;
    font-size: 1rem;
    color: var(--t50);
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    transition: background .2s;
}

.bench-table tbody tr:last-child td {
    border-bottom: none;
}

.bench-table tbody tr:hover td {
    background: var(--bg-card);
}

/* Full-column highlights */
.bench-table th:nth-child(2),
.bench-table td:nth-child(2) {
    background: rgba(59, 130, 246, 0.08);
}

.bench-table tbody tr:hover td:nth-child(2) {
    background: rgba(59, 130, 246, 0.16);
}

.bench-table th:nth-child(4),
.bench-table td:nth-child(4) {
    background: rgba(74, 222, 128, 0.12);
}

.bench-table tbody tr:hover td:nth-child(4) {
    background: rgba(74, 222, 128, 0.22);
}

.mono {
    font-family: 'JetBrains Mono', monospace;
    font-size: .92rem;
}

.val-good {
    color: var(--accent);
    font-weight: 700;
}

.val-bad {
    color: var(--t50);
    opacity: 0.8;
}

.val-gain {
    color: var(--green);
    font-weight: 800;
    text-shadow: 0 0 12px rgba(74, 222, 128, 0.4);
}

/* Stability */
.stability-box {
    background: var(--bg-card);
    border: 1px solid var(--border-md);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.stability-head {
    display: flex;
    gap: 18px;
    align-items: center;
    margin-bottom: 32px;
}

.stability-ico {
    font-size: 1.8rem;
}

.stability-head h4 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.02em;
}

.stability-head p {
    font-size: .9rem;
    color: var(--t50);
    margin-top: 4px;
}

.s-row {
    display: grid;
    grid-template-columns: 150px 1fr 60px;
    gap: 18px;
    align-items: center;
    margin-bottom: 18px;
}

.s-label {
    font-size: .88rem;
    color: var(--t50);
    font-weight: 500;
}

.s-track {
    border-radius: 99px;
    height: 11px;
    overflow: hidden;
}

.s-track.track-good {
    background: rgba(74, 222, 128, 0.15);
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.s-track.track-bad {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.stability-bar {
    height: 100%;
    border-radius: 99px;
    width: 0;
    transition: width 1.2s var(--ease);
}

.bar-good {
    background: var(--green);
    box-shadow: 0 0 14px rgba(74, 222, 128, 0.6);
}

.bar-bad {
    background: var(--red);
    box-shadow: 0 0 14px rgba(239, 68, 68, 0.5);
}

.s-val {
    font-family: 'JetBrains Mono', monospace;
    font-size: .95rem;
    font-weight: 700;
}

.s-val.good {
    color: var(--green);
}

.s-val.bad {
    color: var(--red);
}

.s-note {
    font-size: .98rem;
    color: var(--t50);
    line-height: 1.65;
    margin-top: 8px;
}

/* ══════════════════════════════════════════════
   MATH CONCEPTS
══════════════════════════════════════════════ */
.math-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
}

.math-card {
    flex: 1 1 280px;
    max-width: 360px;
}

.math-card {
    min-height: 280px;
}

.math-sym {
    font-family: 'JetBrains Mono', monospace;
    font-size: 4.5rem;
    font-weight: 800;
    color: var(--border-md);
    line-height: 1;
    margin-bottom: 24px;
}

.math-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.03em;
    margin-bottom: 12px;
}

.math-card p {
    font-size: 1rem;
    color: var(--t50);
    line-height: 1.65;
}

/* ══════════════════════════════════════════════
   ARCHITECTURE BLOCKS
══════════════════════════════════════════════ */
.arch-block {
    padding: 64px 0;
    border-bottom: 1px solid var(--border);
}

.arch-block:last-child {
    border-bottom: none;
}

.arch-num-badge {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: .78rem;
    font-weight: 700;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid rgba(10, 132, 255, .2);
    border-radius: 8px;
    padding: 5px 12px;
    margin-bottom: 20px;
}

.arch-block h3 {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.035em;
    margin-bottom: 36px;
}

.arch-sub {
    margin-top: 36px;
}

.arch-sub h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.02em;
    margin-bottom: 14px;
}

.arch-sub p {
    font-size: 1.05rem;
    color: var(--t50);
    line-height: 1.7;
    margin-top: 12px;
}

.arch-layers {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 20px;
    align-items: center;
    margin-top: 20px;
}

.arch-layer {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px;
}

.arch-layer-badge {
    display: inline-block;
    background: var(--accent-dim);
    color: var(--accent);
    font-size: .75rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    border-radius: 6px;
    padding: 3px 10px;
    margin-bottom: 10px;
}

.arch-layer-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--t100);
    margin-bottom: 8px;
}

.arch-layer p {
    font-size: .9rem;
    color: var(--t50);
    line-height: 1.6;
}

.arch-arrow {
    font-size: 1.8rem;
    color: var(--border-md);
    text-align: center;
}

.arch-intro {
    font-size: 1.1rem;
    color: var(--t50);
    margin-bottom: 32px;
}

.ctrl-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
}

.ctrl-card {
    flex: 1 1 280px;
    max-width: 360px;
}

.ctrl-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 28px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transform-style: preserve-3d;
}

.ctrl-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.02em;
    margin-bottom: 10px;
}

.ctrl-card p {
    font-size: .92rem;
    color: var(--t50);
    line-height: 1.65;
    position: relative;
    z-index: 1;
}

/* Perception pipeline */
.pipe-row {
    display: flex;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 6px;
    padding: 28px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    margin: 28px 0;
    justify-content: center;
}

.pipe-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    min-width: 92px;
    text-align: center;
    transition: all .2s;
}

.pipe-node:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.pipe-node.final {
    border-color: var(--green);
}

.pipe-ico {
    font-size: 1.3rem;
}

.pipe-name {
    font-size: .88rem;
    font-weight: 700;
    color: var(--t100);
}

.pipe-dim {
    font-family: 'JetBrains Mono', monospace;
    font-size: .7rem;
    color: var(--accent);
}

.pipe-src {
    font-size: .65rem;
    color: var(--t50);
    margin-top: 1px;
}

.pipe-arr {
    font-size: 1.1rem;
    color: var(--border-md);
    padding-top: 26px;
    flex-shrink: 0;
}

/* ══════════════════════════════════════════════
   DEPLOYMENT BLOCKS
══════════════════════════════════════════════ */
.deploy-block {
    padding: 64px 0;
    border-bottom: 1px solid var(--border);
}

.deploy-block:last-child {
    border-bottom: none;
}

.deploy-block h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.03em;
    margin-bottom: 16px;
}

.deploy-block>p {
    font-size: 1.05rem;
    color: var(--t50);
    line-height: 1.7;
    margin-bottom: 44px;
}

.feat-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
}

.feat-item {
    flex: 1 1 260px;
    max-width: 360px;
}

.feat-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: all .3s var(--ease);
}

.feat-item:hover {
    border-color: var(--border-md);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feat-ico {
    font-size: 1.8rem;
    margin-bottom: 14px;
}

.feat-item h5 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.02em;
    margin-bottom: 8px;
}

.feat-item p {
    font-size: .92rem;
    color: var(--t50);
    line-height: 1.6;
}

.code-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.code-card {
    background: rgba(13, 13, 20, 0.45);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, .11);
    border-radius: 18px;
    padding: 28px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform-style: preserve-3d;
    transition: all 0.3s var(--ease);
}

.code-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.06);
}

[data-theme="light"] .code-card {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(0, 0, 0, .1);
}

.code-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.code-card-head code {
    font-size: .95rem;
    font-weight: 700;
    color: var(--green);
    background: transparent;
    padding: 0;
}

.code-badge {
    font-size: .68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--t50);
    background: var(--border);
    border-radius: 6px;
    padding: 3px 9px;
}

.sub-rows {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sub-r {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.sub-l {
    font-family: 'JetBrains Mono', monospace;
    font-size: .7rem;
    font-weight: 700;
    color: var(--accent);
    min-width: 28px;
    padding-top: 3px;
}

.sub-r code {
    background: var(--border);
    color: var(--t80);
    font-size: .8rem;
}

/* BYOM */
.byom-block {
    background: linear-gradient(145deg, #060010, #0c001e);
    border: 1px solid rgba(191, 90, 242, .28);
    border-radius: 24px;
    padding: 52px;
    box-shadow: 0 0 80px rgba(191, 90, 242, .07);
}

[data-theme="light"] .byom-block {
    background: linear-gradient(145deg, #faf5ff, #f3ebff);
}

.byom-label {
    display: inline-block;
    background: rgba(191, 90, 242, .12);
    color: var(--purple);
    font-size: .68rem;
    font-weight: 800;
    letter-spacing: .15em;
    text-transform: uppercase;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid rgba(191, 90, 242, .25);
    margin-bottom: 20px;
}

.byom-block h3 {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.03em;
    margin-bottom: 14px;
}

.byom-block>p {
    font-size: 1.05rem;
    color: var(--t50);
    line-height: 1.7;
    margin-bottom: 44px;
}

.byom-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.byom-feat {
    background: rgba(255, 255, 255, .03);
    border: 1px solid rgba(191, 90, 242, .14);
    border-radius: 14px;
    padding: 26px;
}

[data-theme="light"] .byom-feat {
    background: rgba(255, 255, 255, .7);
}

.byom-n {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.byom-feat h5 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.02em;
    margin-bottom: 8px;
}

.byom-feat p {
    font-size: .92rem;
    color: var(--t50);
    line-height: 1.65;
}

/* ══════════════════════════════════════════════
   TRAINING
══════════════════════════════════════════════ */
.train-block {
    padding: 64px 0;
    border-bottom: 1px solid var(--border);
}

.train-block:last-child {
    border-bottom: none;
}

.train-block h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.03em;
    margin-bottom: 16px;
}

.train-block>p {
    font-size: 1.05rem;
    color: var(--t50);
    line-height: 1.7;
    margin-bottom: 36px;
}

.sim-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
}

.sim-card {
    flex: 1 1 220px;
    max-width: 310px;
}

.sim-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 22px;
    box-shadow: var(--shadow-sm);
    transition: all .3s var(--ease);
}

.sim-card:hover {
    border-color: var(--border-md);
    transform: translateY(-2px);
}

.sim-n {
    font-family: 'JetBrains Mono', monospace;
    font-size: .7rem;
    color: var(--accent);
    font-weight: 700;
    display: block;
    margin-bottom: 8px;
}

.sim-card h5 {
    font-size: .92rem;
    font-weight: 700;
    color: var(--t100);
    margin-bottom: 6px;
}

.sim-card p {
    font-size: .85rem;
    color: var(--t50);
    line-height: 1.55;
}

.loss-items {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.loss-item {
    display: flex;
    gap: 28px;
    align-items: flex-start;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 28px 32px;
    box-shadow: var(--shadow-sm);
    transition: background .2s;
}

.loss-item:first-child {
    border-radius: 16px 16px 3px 3px;
}

.loss-item:last-child {
    border-radius: 3px 3px 16px 16px;
}

.loss-item:not(:last-child) {
    border-bottom: none;
}

.loss-item:hover {
    background: var(--bg-card-2);
}

.loss-ico {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    background: var(--accent-dim);
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.loss-item h5 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.02em;
    margin-bottom: 6px;
}

.loss-item p {
    font-size: .98rem;
    color: var(--t50);
    line-height: 1.65;
}

.data-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-top: 20px;
}

.data-card {
    background: rgba(13, 13, 20, 0.45);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-md);
    border-radius: 20px;
    padding: 32px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transform-style: preserve-3d;
    transition: all 0.3s var(--ease);
}

.data-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.06);
}

[data-theme="light"] .data-card {
    background: rgba(255, 255, 255, 0.7);
}

.data-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: .7rem;
    font-weight: 700;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid rgba(10, 132, 255, .2);
    padding: 5px 12px;
    border-radius: 7px;
    display: inline-block;
    margin-bottom: 16px;
}

.data-card h5 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--t100);
    letter-spacing: -.02em;
    margin-bottom: 10px;
}

.data-card p {
    font-size: .98rem;
    color: var(--t50);
    line-height: 1.65;
}

/* ══════════════════════════════════════════════
   SCALING
══════════════════════════════════════════════ */
.scale-diagram {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 36px;
    align-items: center;
    margin: 80px 0;
}

.scale-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 44px 36px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all .4s var(--ease);
}

.scale-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-md);
}

.scale-card.base {
    border-color: var(--accent);
}

.scale-card.ultra {
    border-color: var(--green);
}

.scale-ico {
    font-size: 1.8rem;
    margin-bottom: 14px;
}

.scale-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--t100);
    margin-bottom: 8px;
    letter-spacing: -.02em;
}

.scale-n {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 14px;
}

.scale-card.ultra .scale-n {
    color: var(--green);
}

.scale-card p {
    font-size: .92rem;
    color: var(--t50);
    line-height: 1.6;
}

.scale-mid {
    text-align: center;
}

.scale-mid-label {
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--accent);
    margin-bottom: 8px;
}

.scale-arr {
    font-size: 2.5rem;
    color: var(--border-md);
}

.scale-mid-desc {
    font-size: .8rem;
    color: var(--t50);
    max-width: 110px;
    margin: 8px auto 0;
    line-height: 1.5;
}

/* ══════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════ */
.site-footer {
    border-top: 1px solid var(--border-md);
    background: radial-gradient(100% 100% at 50% 100%, rgba(59, 130, 246, 0.1) 0%, var(--bg-alt) 80%);
    padding: 160px 24px 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.footer-big {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    letter-spacing: -.04em;
    line-height: 1.05;
    margin-bottom: 52px;
    background: linear-gradient(110deg, var(--t100) 0%, var(--t80) 50%, #A855F7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-ctas {
    display: flex;
    gap: 14px;
    justify-content: center;
    margin-bottom: 80px;
}

.footer-meta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -.05em;
    color: var(--t100);
}

.footer-meta p {
    font-size: .88rem;
    color: var(--t50);
    line-height: 1.7;
}

/* ══════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════ */
@media (max-width: 1024px) {
    .nav-inner {
        flex-wrap: wrap;
    }

    .nav-sep {
        display: none;
    }

    .desktop-only {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 0;
        border-top: 1px solid var(--border-md);
        margin-top: 12px;
    }

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

    .site-nav.nav-open .nav-inner {
        background: var(--bg-card);
        border-radius: 20px;
    }

    .nav-links a {
        width: 100%;
        padding: 12px 14px;
    }

    .arch-layers {
        grid-template-columns: 1fr;
    }

    .arch-arrow {
        display: none;
    }

    .code-cards {
        grid-template-columns: 1fr;
    }

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

    .data-cards {
        grid-template-columns: 1fr;
    }

    .scale-diagram {
        grid-template-columns: 1fr;
    }

    .scale-arr {
        display: none;
    }

    .app-block {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .app-meta {
        flex-direction: row;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .section-wrap {
        padding: 100px 20px;
    }

    .contrib-card,
    .math-card,
    .ctrl-card,
    .feat-item,
    .sim-card {
        flex: 1 1 100%;
        max-width: 100%;
    }

    .wide3 {
        flex: 1 1 100%;
        max-width: 100%;
    }

    .hero-stats {
        flex-direction: column;
    }

    .stat-item+.stat-item::before {
        top: 0;
        left: 20%;
        width: 60%;
        height: 1px;
    }

    .detail-row {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .footer-ctas {
        flex-direction: column;
        align-items: center;
    }

    .byom-block {
        padding: 32px 24px;
    }

    .pipe-row {
        gap: 4px;
    }

.n-card, .tilt-card, .app-block, .deploy-block, .sim-card {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border) !important;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3) !important;
    position: relative;
    overflow: hidden;
}

.tilt-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 50%, rgba(255,255,255,0.02) 100%);
    pointer-events: none;
}

.tilt-card:hover {
    border-color: var(--accent) !important;
    box-shadow: 0 0 30px var(--accent-dim) !important;
}

.n-card {
    padding: 28px 24px;
    gap: 24px;
}

    .n-num {
        font-size: 2.5rem;
        min-width: 54px;
    }
}

/* ══════════════════════════════════════════════
   ADVANCED SCROLL EFFECTS & POLISH
══════════════════════════════════════════════ */
.section-title, .hero-title .line-plain, .math-sym, .app-content h3, .footer-big {
    text-shadow: 0 0 calc(var(--scroll-glow, 0) * 32px) rgba(59, 130, 246, 0.4),
                 0 0 calc(var(--scroll-glow, 0) * 12px) rgba(168, 85, 247, 0.3);
    color: color-mix(in srgb, var(--t100) calc(30% + (var(--scroll-glow, 1) * 70%)), var(--t50));
    transition: text-shadow 0.15s ease-out, color 0.15s;
    will-change: text-shadow, color;
}

[data-theme="light"] .section-title,
[data-theme="light"] .hero-title .line-plain,
[data-theme="light"] .math-sym,
[data-theme="light"] .app-content h3,
[data-theme="light"] .footer-big {
    text-shadow: 0 0 calc(var(--scroll-glow, 0) * 22px) rgba(0, 113, 227, 0.35);
}

.glow-orb {
    mix-blend-mode: screen;
}
[data-theme="light"] .glow-orb {
    mix-blend-mode: multiply;
}

/* Subtle moving scanlines to add grid depth */
.bg-grid::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent, var(--accent-glow), transparent);
    height: 300%;
    animation: scanline 12s linear infinite;
    opacity: 0.12;
    pointer-events: none;
}
@keyframes scanline {
    from { transform: translateY(-33.33%); }
    to { transform: translateY(0%); }
}

/* Glowing text on hover for chips */
.eyebrow-chip:hover {
    text-shadow: 0 0 12px currentColor;
}