:root {
    --bg: #08111f;
    --surface: #0f1b2d;
    --surface-soft: #15233a;
    --primary: #18a0fb;
    --secondary: #8b5cf6;
    --accent: #f97316;
    --text: #e6edf7;
    --muted: #9fb0c8;
    --border: rgba(255,255,255,0.10);
    --shadow: 0 18px 40px rgba(0,0,0,0.25);
    --radius: 14px;
    --content-width: 1180px;
    --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
    margin: 0;
    font-family: var(--font-family);
    line-height: 1.7;
    color: var(--text);
    background: linear-gradient(180deg, #08111f 0%, #0a1424 100%);
}
a { color: var(--primary); }
a:hover { color: #6dc4ff; }
img { max-width: 100%; height: auto; }
.container {
    width: 100%;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 24px;
}
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(8,17,31,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 76px;
}
.logo a {
    color: #fff;
    text-decoration: none;
    font-weight: 800;
    letter-spacing: 0.02em;
    font-size: 1.35rem;
}
.logo span { color: var(--accent); }
.menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px;
    cursor: pointer;
}
.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    margin: 4px 0;
}
nav ul {
    display: flex;
    list-style: none;
    gap: 18px;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}
nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.96rem;
}
nav a.active, nav a:hover { color: var(--accent); }
.breadcrumb {
    display: flex;
    gap: 8px;
    list-style: none;
    padding: 18px 0 0;
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb li:not(:last-child)::after { content: '/'; margin-left: 8px; }
.hero {
    padding: 72px 0 54px;
    background: radial-gradient(circle at top, rgba(24,160,251,0.20), transparent 35%), linear-gradient(135deg, #10213a 0%, #09111f 100%);
}
.hero-inner {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 28px;
    align-items: center;
}
.hero-copy h1 {
    font-size: clamp(2.3rem, 5vw, 3.9rem);
    line-height: 1.1;
    margin: 0 0 16px;
}
.hero-copy p {
    font-size: 1.1rem;
    color: var(--muted);
    max-width: 760px;
    margin: 0 0 22px;
}
.hero-panel {
    background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    padding: 20px;
}
.hero-panel h3 { margin-top: 0; }
.kpi-list, .toc ul, .check-list {
    margin: 0;
    padding-left: 20px;
}
.cta-row {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 18px;
}
.cta-button, .secondary-button {
    display: inline-block;
    padding: 14px 22px;
    border-radius: 999px;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.cta-button {
    background: linear-gradient(135deg, var(--accent), #fb923c);
    color: #fff;
    box-shadow: 0 10px 24px rgba(249,115,22,0.26);
}
.secondary-button {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}
.cta-button:hover, .secondary-button:hover { transform: translateY(-2px); }
main { padding-bottom: 56px; }
.section { padding: 38px 0; }
.section-header { margin-bottom: 22px; }
.section-header h2 {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    margin: 0 0 8px;
}
.section-header p, .lede, .muted { color: var(--muted); }
.content-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}
.card, .toc, .highlight-box, .spec-table-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card {
    padding: 22px;
}
.card h3, .card h4 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.toc, .highlight-box, .spec-table-wrap { padding: 22px; }
.highlight-box {
    background: linear-gradient(135deg, rgba(24,160,251,0.14), rgba(139,92,246,0.14));
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 16px;
}
.stat {
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
}
.stat strong {
    display: block;
    font-size: 1.8rem;
    color: #fff;
}
.spec-table {
    width: 100%;
    border-collapse: collapse;
}
.spec-table th, .spec-table td {
    text-align: left;
    padding: 14px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
.spec-table th { color: #fff; }
.spec-table td { color: var(--muted); }
.related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
}
.related-links a {
    text-decoration: none;
    font-weight: 600;
}
.newsletter-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
    gap: 24px;
    align-items: stretch;
    background: linear-gradient(135deg, rgba(24,160,251,0.16), rgba(249,115,22,0.12));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
}
.newsletter-copy h2 {
    margin: 0 0 12px;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
}
.eyebrow {
    margin: 0 0 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.82rem;
    font-weight: 700;
    color: #ffd3b3;
}
.newsletter-form-card {
    background: rgba(8,17,31,0.72);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}
.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.newsletter-form label {
    font-weight: 700;
}
.newsletter-form input {
    width: 100%;
    padding: 14px 16px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.16);
    background: rgba(255,255,255,0.06);
    color: var(--text);
    font: inherit;
}
.newsletter-form input::placeholder {
    color: var(--muted);
}
.newsletter-note {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
}
.newsletter-link-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}
footer {
    border-top: 1px solid var(--border);
    background: #09101d;
    padding: 34px 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}
.footer-grid h3 { margin-top: 0; }
.footer-grid ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-grid li { margin-bottom: 8px; }
.footer-grid a {
    color: var(--muted);
    text-decoration: none;
}
.footer-grid a:hover { color: var(--accent); }
.footer-bottom {
    border-top: 1px solid var(--border);
    margin-top: 22px;
    padding-top: 18px;
    color: var(--muted);
    font-size: 0.95rem;
}
@media (max-width: 900px) {
    .hero-inner, .content-grid, .newsletter-shell { grid-template-columns: 1fr; }
    .menu-toggle { display: inline-block; }
    nav {
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: rgba(8,17,31,0.98);
        border-bottom: 1px solid var(--border);
        display: none;
    }
    nav.open { display: block; }
    nav ul {
        flex-direction: column;
        gap: 0;
        padding: 8px 24px 18px;
    }
    nav li { padding: 8px 0; }
}