:root {
    --bg: #05070b;
    --ink: #f6f9fc;
    --muted: #a9b7c9;
    --line: #27313d;
    --line-strong: #3f5064;
    --cyan: #18b6ff;
    --green: #8df0c4;
    --amber: #f5c15c;
    --paper: #f8fafc;
    --paper-ink: #101820;
    --paper-muted: #526171;
    --paper-line: #cad3dd;
    --surface: #0d141d;
    --max: 1160px;
    --mono:
        "JetBrainsMono Nerd Font Mono", "JetBrainsMono Nerd Font",
        "JetBrains Mono", "JetBrains Mono NL", ui-monospace, SFMono-Regular,
        Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* {
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px), var(--bg);
    background-size: 72px 72px;
    color: var(--ink);
    font-family: var(--mono);
    font-size: 15px;
    line-height: 1.7;
    letter-spacing: 0;
    text-rendering: geometricPrecision;
    -webkit-font-smoothing: antialiased;
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    content: "";
    background: linear-gradient(
        180deg,
        rgba(5, 7, 11, 0.82),
        rgba(5, 7, 11, 0.96) 36%,
        rgba(5, 7, 11, 0.99)
    );
}

::selection {
    background: var(--cyan);
    color: #00111b;
}

a {
    color: inherit;
    text-decoration-color: transparent;
    text-underline-offset: 0.22em;
    transition:
        color 160ms ease,
        text-decoration-color 160ms ease;
}

a:hover,
a:focus-visible {
    color: var(--green);
    text-decoration-color: currentColor;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    line-height: 1.08;
    letter-spacing: 0;
}

h1 {
    max-width: 980px;
    margin-bottom: 20px;
    font-size: 3.25rem;
    overflow-wrap: anywhere;
}

h2 {
    margin-bottom: 18px;
    font-size: 2rem;
}

h3 {
    margin-bottom: 12px;
    font-size: 1rem;
    text-transform: uppercase;
}

p {
    margin-bottom: 18px;
}

.page {
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 78px;
    border-bottom: 1px solid var(--line-strong);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    text-transform: uppercase;
    text-decoration: none;
}

.brand img {
    display: block;
    width: 34px;
    height: 34px;
    border: 1px solid var(--line-strong);
}

.brand small {
    display: block;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: none;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 18px;
    color: var(--muted);
    font-size: 0.78rem;
    text-transform: uppercase;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 270px;
    gap: 48px;
    align-items: center;
    padding: 72px 0 48px;
    border-bottom: 1px solid var(--line-strong);
}

.eyebrow,
.section-index {
    color: var(--green);
    font-size: 0.78rem;
    text-transform: uppercase;
}

.subtitle {
    max-width: 860px;
    color: var(--muted);
    font-size: 1.08rem;
}

.metadata {
    display: grid;
    gap: 10px;
    padding: 18px;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: rgba(13, 20, 29, 0.94);
    color: var(--muted);
    font-size: 0.86rem;
}

.metadata strong {
    display: block;
    color: var(--ink);
    font-size: 0.78rem;
    text-transform: uppercase;
}

.action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 14px;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: rgba(13, 20, 29, 0.78);
    color: var(--ink);
    font-size: 0.84rem;
    font-weight: 700;
    text-transform: uppercase;
    text-decoration: none;
}

.button:hover,
.button:focus-visible {
    border-color: var(--green);
    color: var(--green);
    text-decoration: none;
}

.section {
    padding: 64px 0;
    border-bottom: 1px solid var(--line-strong);
}

.section-grid {
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 56px;
}

.copy {
    max-width: 840px;
    color: var(--muted);
}

.paper-panel {
    padding: 28px;
    border: 1px solid var(--paper-line);
    border-radius: 6px;
    background: var(--paper);
    color: var(--paper-ink);
}

.paper-panel p,
.paper-panel li {
    color: var(--paper-muted);
}

.summary-grid,
.path-grid {
    display: grid;
    gap: 1px;
    margin-top: 24px;
    border: 1px solid var(--line-strong);
    background: var(--line-strong);
}

.summary-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.path-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.summary-cell,
.path-cell {
    min-height: 180px;
    padding: 20px;
    background: rgba(13, 20, 29, 0.94);
}

.summary-cell p,
.path-cell p {
    color: var(--muted);
}

.path-cell h3 span {
    color: var(--amber);
}

.equation-card {
    overflow-x: auto;
    margin-top: 22px;
    padding: 18px;
    border-left: 4px solid var(--cyan);
    background: #06101a;
    color: var(--ink);
}

.equation-card mjx-container {
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
}

.protocol-list {
    display: grid;
    gap: 1px;
    margin: 24px 0 0;
    padding: 0;
    border: 1px solid var(--line-strong);
    background: var(--line-strong);
    list-style: none;
}

.protocol-list li {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 18px;
    padding: 16px;
    background: #0b121b;
    color: var(--muted);
}

.protocol-list strong {
    color: var(--green);
    text-transform: uppercase;
}

.pdf-frame {
    width: 100%;
    max-width: 100%;
    height: min(78vh, 860px);
    min-height: 520px;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: var(--surface);
}

.footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 14px;
    padding: 24px 0 36px;
    color: var(--muted);
    font-size: 0.78rem;
    text-transform: uppercase;
}

@media (max-width: 920px) {
    h1 {
        font-size: 2.45rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .hero,
    .section-grid,
    .summary-grid,
    .path-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 620px) {
    body {
        font-size: 14px;
    }

    h1 {
        font-size: 2rem;
    }

    .page {
        width: min(var(--max), calc(100% - 24px));
    }

    .topbar {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        padding: 18px 0;
    }

    .nav {
        justify-content: flex-start;
        gap: 12px;
    }

    .hero,
    .section {
        padding: 44px 0;
    }

    .paper-panel {
        padding: 18px;
    }

    .protocol-list li {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .pdf-frame {
        height: 620px;
        min-height: 420px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition: none !important;
    }
}