* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --ink: #0d1117;
    --ink-2: #121826;
    --ink-3: #1a2232;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.16);
    --mist: #aeb7c4;
    --paper: #e8edf3;
    --accent: #9aa6b2;
    --accent-strong: #c7d0da;
    --mono: "IBM Plex Mono", "SFMono-Regular", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--sans);
    background: var(--ink);
    color: var(--paper);
    line-height: 1.7;
    letter-spacing: 0.01em;
    overflow-x: hidden;
}

.page {
    position: relative;
    min-height: 100vh;
    background:
        radial-gradient(circle at 20% 15%, rgba(114, 129, 151, 0.18), transparent 55%),
        radial-gradient(circle at 80% 20%, rgba(78, 92, 112, 0.22), transparent 60%),
        linear-gradient(160deg, rgba(13, 17, 23, 1) 0%, rgba(13, 17, 23, 0.92) 50%, rgba(13, 17, 23, 1) 100%);
}

.page::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

.ambient-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    opacity: 0.55;
    pointer-events: none;
}

.nav {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(13, 17, 23, 0.86);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}

.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2.5rem;
    position: relative;
    z-index: 2;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.logo-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-mark {
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 0 6px rgba(120, 170, 200, 0.35));
}

.logo-links {
    opacity: 0.78;
    animation: logoPulse 7s ease-in-out infinite;
    stroke-width: 2.4;
}

.logo-nodes {
    opacity: 0.95;
    animation: logoDrift 8s ease-in-out infinite;
    stroke-width: 5.5;
}

.logo-orbit {
    transform-origin: 50% 50%;
    transform-box: fill-box;
    animation: logoOrbit 18s ease-in-out infinite;
}

@keyframes logoOrbit {
    0%, 100% {
        transform: rotate(0deg) scale(1);
    }
    50% {
        transform: rotate(6deg) scale(1.04);
    }
}

@keyframes logoPulse {
    0%, 100% {
        stroke-dasharray: 200;
        stroke-dashoffset: 0;
        opacity: 0.85;
    }
    50% {
        stroke-dasharray: 240;
        stroke-dashoffset: 12;
        opacity: 0.7;
    }
}

@keyframes logoDrift {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-1px);
    }
}

.logo-text {
    font-size: 1.05rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    font-weight: 600;
}

.logo-tag {
    font-size: 0.72rem;
    color: var(--mist);
    letter-spacing: 0.24em;
    text-transform: uppercase;
    font-family: var(--mono);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.nav-links a {
    color: var(--mist);
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--paper);
}

.hero {
    position: relative;
    z-index: 1;
    padding: 6rem 2.5rem 5rem;
}

.hero-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: start;
}

.eyebrow {
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--mist);
    text-transform: uppercase;
    letter-spacing: 0.24em;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: clamp(2.8rem, 5vw, 4.8rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--accent-strong);
    max-width: 580px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin: 2rem 0 2.5rem;
}

.primary,
.secondary {
    font-family: var(--sans);
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.9rem 1.6rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 1px solid var(--line-strong);
    background: transparent;
    color: var(--paper);
    transition: border 0.2s ease, color 0.2s ease;
}

.primary {
    background: var(--paper);
    color: var(--ink);
    border-color: var(--paper);
}

.secondary:hover,
.primary:hover {
    border-color: var(--accent-strong);
}

.hero-meta {
    display: grid;
    gap: 1rem;
    border-top: 1px solid var(--line);
    padding-top: 1.5rem;
}

.meta-label {
    display: block;
    font-family: var(--mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--mist);
    margin-bottom: 0.3rem;
}

.meta-value {
    color: var(--paper);
    font-size: 0.95rem;
}

.hero-panel {
    background: rgba(18, 24, 38, 0.7);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}

.panel-header {
    margin-bottom: 1.5rem;
}

.panel-title {
    display: block;
    font-family: var(--mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--mist);
}

.panel-subtitle {
    display: block;
    margin-top: 0.4rem;
    font-size: 1.1rem;
    color: var(--paper);
}

.panel-list {
    list-style: none;
    display: grid;
    gap: 1rem;
    margin-bottom: 1.8rem;
}

.panel-list li {
    padding-left: 1.2rem;
    position: relative;
    color: var(--accent-strong);
}

.panel-list li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: var(--mist);
}

.panel-footnote {
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--mist);
    border-top: 1px solid var(--line);
    padding-top: 1rem;
}

.section {
    position: relative;
    z-index: 1;
    padding: 5rem 2.5rem;
}

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.section-inner.narrow {
    max-width: 900px;
}

.section-heading h2 {
    font-size: clamp(2rem, 4vw, 3.4rem);
    font-weight: 500;
    margin-bottom: 0.8rem;
}

.section-heading p {
    color: var(--accent-strong);
    max-width: 720px;
}

.prose {
    display: grid;
    gap: 1.4rem;
    color: var(--accent-strong);
    font-size: 1.05rem;
}

.model {
    margin-top: 2.5rem;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2.4rem;
}

.model-core {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: rgba(18, 24, 38, 0.6);
    padding: 2.2rem;
}

.model-label {
    font-family: var(--mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--mist);
    margin-bottom: 0.8rem;
    display: block;
}

.model-branches {
    display: grid;
    gap: 1rem;
}

.branch {
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 1.4rem 1.6rem;
    background: rgba(18, 24, 38, 0.45);
    color: var(--accent-strong);
}

.flagship {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.8rem;
    margin-top: 2.5rem;
}

.flagship-card,
.flagship-diagram {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 2rem;
    background: rgba(18, 24, 38, 0.55);
}

.flagship-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
}

.flagship-card p {
    color: var(--accent-strong);
}

.diagram-layer {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem;
    margin-bottom: 1.4rem;
}

.diagram-layer span {
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 0.8rem;
    text-align: center;
    font-family: var(--mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--mist);
}

.diagram-note {
    color: var(--accent-strong);
    font-size: 0.95rem;
}

.philosophy {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.8rem;
    margin-top: 2.2rem;
    color: var(--accent-strong);
}

.closing {
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    padding: 2.8rem;
    background: rgba(18, 24, 38, 0.6);
    display: grid;
    gap: 1.5rem;
}

.closing-note {
    font-family: var(--mono);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--mist);
}

.footer {
    border-top: 1px solid var(--line);
    padding: 3rem 2.5rem;
    background: rgba(13, 17, 23, 0.9);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    color: var(--mist);
    font-size: 0.9rem;
}

.footer-title {
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-weight: 600;
    color: var(--paper);
    margin-bottom: 0.6rem;
}

.footer-links {
    display: grid;
    gap: 0.6rem;
}

.footer-links a {
    text-decoration: none;
    color: var(--mist);
}

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

.footer-meta {
    display: grid;
    gap: 0.6rem;
}

@media (max-width: 1100px) {
    .hero-grid,
    .model,
    .flagship,
    .philosophy {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: flex-end;
    }
}

@media (max-width: 768px) {
    .nav-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .nav-links {
        width: 100%;
        justify-content: flex-start;
    }

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-inner {
        grid-template-columns: 1fr;
    }
}