:root {
    --bg-color: #F9F9FB;
    --text-color: #1A1A1D;
    --muted-text: rgba(26, 26, 29, 0.72);
    --soft-text: rgba(26, 26, 29, 0.55);
    --line-color: rgba(0, 0, 0, 0.05);
    --line-strong: rgba(0, 0, 0, 0.08);
    --surface-color: rgba(255, 255, 255, 0.56);
    --accent-purple: #7C4DFF;
    --accent-cyan: #00E5FF;
    --accent-pink: #FF4081;
    --dynamic-accent: #7C4DFF;
    --mono-font: 'Roboto Mono', monospace;
    --shell-max-width: 1400px;
    --content-max-width: 1180px;
    --page-shell-inline: clamp(16px, 4.6vw, 40px);
    --page-shell-top: clamp(22px, 4vw, 40px);
    --page-shell-bottom: clamp(28px, 5vw, 56px);
    --header-bottom-space: clamp(18px, 2.4vw, 28px);
    --content-start-space: clamp(26px, 4vw, 42px);
    --hero-surface-gap: clamp(16px, 2.8vw, 26px);
    --reading-max-width: 62ch;
    --edge-padding: clamp(16px, 4vw, 32px);
    --page-block-gap: clamp(22px, 3vw, 36px);
    --section-gap: clamp(44px, 7vw, 84px);
    --hero-gap: clamp(26px, 4vw, 42px);
    --eyebrow-size: 0.62rem;
    --meta-size: 0.62rem;
    --body-size: 0.92rem;
    --motion-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
    --portrait-seam-left-clip: 48.6%;
    --portrait-seam-right-clip: 51.4%;
}

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

html {
    height: 100%;
    scroll-behavior: smooth;
}

html,
body {
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--mono-font);
    -webkit-font-smoothing: antialiased;
}

body.home-page {
    overflow: hidden;
}

body.about-page,
body.core-page,
body.initiate-page {
    --bg-color: #F6F4EF;
    --text-color: #18171A;
    --muted-text: rgba(24, 23, 26, 0.72);
    --soft-text: rgba(24, 23, 26, 0.48);
    --line-color: rgba(24, 23, 26, 0.08);
    --line-strong: rgba(24, 23, 26, 0.13);
    --surface-color: rgba(255, 255, 255, 0.42);
    line-height: 1.72;
}

body.systems-page:not(.core-page) {
    --bg-color: #0B0B0D;
    --text-color: #F0F0F0;
    --muted-text: rgba(240, 240, 240, 0.68);
    --soft-text: rgba(240, 240, 240, 0.42);
    --line-color: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.12);
    --surface-color: rgba(255, 255, 255, 0.03);
    line-height: 1.7;
}

body.is-transitioning {
    overflow: hidden;
}

a,
button {
    font: inherit;
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.5em;
    white-space: nowrap;
}

.version-tag {
    font-size: 0.6rem;
    opacity: 0.4;
    letter-spacing: 0.2em;
}

a.version-tag {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease, opacity 0.25s ease, text-shadow 0.25s ease;
}

a.version-tag:hover,
a.version-tag:focus-visible {
    color: var(--dynamic-accent);
    opacity: 1;
    text-shadow: 0 0 12px color-mix(in srgb, var(--dynamic-accent) 22%, transparent);
}

.system-kicker,
.eyebrow {
    display: inline-block;
    font-size: var(--eyebrow-size);
    letter-spacing: 0.34em;
    text-transform: uppercase;
    color: var(--soft-text);
}

.meta-row,
.page-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
    font-size: var(--meta-size);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--soft-text);
}

.meta-row span,
.page-meta span {
    white-space: nowrap;
}

.section-heading {
    font-size: clamp(1.08rem, 2vw, 1.42rem);
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--text-color);
}

.section-lead,
.page-summary,
.body-copy {
    font-size: var(--body-size);
    line-height: 1.9;
    color: var(--muted-text);
}

.page-banner-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: var(--meta-size);
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--soft-text);
}

.page-banner-label::before {
    content: '';
    width: 30px;
    height: 1px;
    background: linear-gradient(90deg, rgba(124,77,255,0.45), rgba(0,229,255,0.45), rgba(255,64,129,0.28));
}

[data-reveal] {
    will-change: opacity, transform;
}

.terminal-btn {
    background: var(--text-color);
    border: none;
    color: white;
    font-family: var(--mono-font);
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.14s ease, background 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.25s ease;
}

.terminal-btn:hover {
    background: var(--dynamic-accent);
}

.terminal-btn:active {
    transform: scale(0.97);
}

.terminal-btn.secondary {
    background: transparent;
    color: var(--text-color);
    border: 1px solid rgba(0, 0, 0, 0.12);
}

.terminal-btn.secondary:hover {
    background: var(--dynamic-accent);
    border-color: var(--dynamic-accent);
    color: white;
}