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

:root {
    --bg: #090b10;
    --surface: #111720;
    --accent: #00e5ff;
    --accent2: #0090a8;
    --accent-border: rgba(0,229,255,0.25);
    --accent-dim: rgba(0,229,255,0.06);
    --text: #c9d6e3;
    --text-dim: #5a7080;
    --text-bright: #e8f4f8;
    --mono: 'Share Tech Mono', monospace;
    --sans: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.8;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,229,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,255,0.025) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    border-bottom: 1px solid var(--accent-border);
}

.logo {
    font-family: var(--mono);
    font-size: 20px;
    color: var(--accent);
    letter-spacing: 2px;
    text-decoration: none;
}

.logo span {
    color: var(--text-dim);
}

.back-link {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text-dim);
    text-decoration: none;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--accent);
}

/* PAGE HEADER */
.page-header {
    padding: 48px 0 40px;
    border-bottom: 1px solid var(--accent-border);
    margin-bottom: 48px;
}

.page-eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.page-header h1 {
    font-family: var(--mono);
    font-size: 28px;
    color: var(--text-bright);
    font-weight: 400;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 13px;
    color: var(--text-dim);
}

/* DOCUMENT BODY */
.doc-section {
    margin-bottom: 44px;
}

.doc-section h2 {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--accent);
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--accent-border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.doc-section h2::before {
    content: attr(data-num);
    font-size: 10px;
    color: var(--text-dim);
}

.doc-section p {
    font-size: 14px;
    color: var(--text);
    margin-bottom: 14px;
    line-height: 1.85;
}

.doc-section p:last-child {
    margin-bottom: 0;
}

/* Definition list */
.def-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.def-list li {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 16px;
    font-size: 14px;
}

.def-term {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--accent2);
    padding-top: 2px;
    line-height: 1.6;
}

.def-desc {
    color: var(--text);
    line-height: 1.85;
}

/* Requisites block */
.requisites {
    background: var(--surface);
    border: 1px solid var(--accent-border);
    padding: 28px;
    margin-bottom: 48px;
}

.req-title {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.req-row {
    display: flex;
    gap: 16px;
    font-size: 13px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0,229,255,0.06);
}

.req-row:last-child {
    border-bottom: none;
}

.req-label {
    color: var(--text-dim);
    min-width: 160px;
    flex-shrink: 0;
}

.req-value {
    color: var(--text-bright);
    font-family: var(--mono);
    font-size: 12px;
}

.req-value a {
    color: var(--accent);
    text-decoration: none;
}

footer {
    border-top: 1px solid var(--accent-border);
    padding: 32px 0 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-logo {
    font-family: var(--mono);
    font-size: 14px;
    color: var(--text-dim);
}

.footer-logo span {
    color: var(--accent);
}

.footer-note {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text-dim);
    opacity: 0.5;
}

@media (max-width: 600px) {
    .def-list li {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .req-row {
        flex-direction: column;
        gap: 4px;
    }

    footer {
        flex-direction: column;
        align-items: flex-start;
    }
}