:root {
    --bg: #0f172a;
    --surface: rgba(255, 255, 255, 0.03);
    --surface-2: rgba(255, 255, 255, 0.05);
    --border: rgba(56, 189, 248, 0.1);
    --border-bright: rgba(56, 189, 248, 0.2);
    --ink: #f8fafc;
    --ink-muted: #94a3b8;
    --ink-dim: #64748b;
    --accent: #38bdf8;
    --accent-dim: rgba(56, 189, 248, 0.1);
    --accent-mid: rgba(56, 189, 248, 0.2);
    --warn: #fbbf24;
    --warn-dim: rgba(251, 191, 36, 0.12);
    --red: #f87171;
    --red-dim: rgba(248, 113, 113, 0.10);
    --blue: #38bdf8;
    --blue-dim: rgba(56, 189, 248, 0.10);
    --grid-line: rgba(56, 189, 248, 0.1);
    --mono: 'Source Code Pro', monospace;
    --sans: 'Inter', sans-serif;
    --display: 'Source Code Pro', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

* {
    position: relative;
    z-index: 1;
}

nav {
    border-bottom: 1px solid var(--border);
    padding: 0 40px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(13, 15, 14, 0.95);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-logo {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-decoration: none;
}

.nav-tag {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-muted);
    letter-spacing: 0.05em;
}

.nav-cta {
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--bg);
    background: var(--accent);
    padding: 8px 18px;
    text-decoration: none;
    letter-spacing: 0.08em;
    transition: opacity 0.2s;
}

.nav-cta:hover {
    opacity: 0.85;
}

.marquee-wrap {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    padding: 12px 0;
    background: var(--surface);
}

.marquee-track {
    display: flex;
    gap: 60px;
    animation: marquee 28s linear infinite;
    white-space: nowrap;
}

.marquee-item {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-dim);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    flex-shrink: 0;
}

.marquee-item span {
    color: var(--accent);
    margin-right: 60px;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.hero {
    padding: 100px 40px 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-eyebrow::before {
    content: '';
    width: 32px;
    height: 1px;
    background: var(--accent);
}

.hero-headline {
    font-family: var(--display);
    font-size: clamp(48px, 7vw, 100px);
    line-height: 0.95;
    letter-spacing: 0.01em;
    color: var(--ink);
    margin-bottom: 32px;
}

.hero-headline .accent-line {
    color: var(--accent);
    display: block;
}

.hero-sub {
    font-size: 18px;
    font-weight: 300;
    color: var(--ink-muted);
    max-width: 560px;
    line-height: 1.7;
    margin-bottom: 48px;
}

.hero-sub strong {
    color: var(--ink);
    font-weight: 500;
}

.hero-data-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border: 1px solid var(--border);
    max-width: 640px;
}

.hero-stat {
    padding: 20px 24px;
    border-right: 1px solid var(--border);
}

.hero-stat:last-child {
    border-right: none;
}

.hero-stat-val {
    font-family: var(--display);
    font-size: 40px;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 4px;
}

.hero-stat-label {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 40px;
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 48px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.section-tag {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-dim);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    white-space: nowrap;
}

.section-title {
    font-family: var(--display);
    font-size: clamp(36px, 5vw, 64px);
    letter-spacing: 0.02em;
    color: var(--ink);
    line-height: 1;
}

.section-num {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-dim);
    letter-spacing: 0.12em;
    position: absolute;
    right: 0;
    bottom: 20px;
}

.rule {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0;
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    margin-bottom: 48px;
}

.problem-cell {
    background: var(--surface);
    padding: 32px;
}

.problem-cell.full-width {
    grid-column: span 2;
}

.cell-label {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-dim);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.problem-cell h3 {
    font-family: var(--mono);
    font-size: 15px;
    font-weight: 500;
    color: var(--warn);
    margin-bottom: 12px;
}

.problem-cell p {
    font-size: 14px;
    color: var(--ink-muted);
    line-height: 1.7;
}

.problem-cell p strong {
    color: var(--ink);
    font-weight: 500;
}

.callout-block {
    background: var(--blue-dim);
    border-left: 3px solid var(--blue);
    padding: 24px 28px;
}

.callout-block p {
    font-family: var(--mono);
    font-size: 14px;
    color: var(--ink);
    line-height: 1.6;
}

.callout-block strong {
    color: var(--blue);
    font-weight: 600;
}

.fault-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.fault-item {
    display: grid;
    grid-template-columns: 32px 1fr;
    gap: 12px;
    align-items: start;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

.fault-index {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-dim);
    padding-top: 3px;
}

.fault-text {
    font-size: 14px;
    color: var(--ink-muted);
}

.fault-text strong {
    color: var(--ink);
    font-weight: 500;
}

.solution-intro {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 60px;
    align-items: start;
    margin-bottom: 60px;
}

.solution-intro-text h3 {
    font-family: var(--display);
    font-size: 42px;
    color: var(--accent);
    margin-bottom: 20px;
    line-height: 1;
}

.solution-intro-text p {
    font-size: 15px;
    color: var(--ink-muted);
    line-height: 1.75;
    margin-bottom: 16px;
}

.solution-intro-text p strong {
    color: var(--ink);
    font-weight: 500;
}

.roadmap-diagram {
    border: 1px solid var(--border);
    background: var(--surface);
    padding: 24px;
}

.diagram-header {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-dim);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.roadmap-phase {
    display: flex;
    gap: 12px;
    margin-bottom: 1px;
}

.phase-marker {
    width: 28px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.phase-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
    border: 2px solid var(--border-bright);
    flex-shrink: 0;
    margin-top: 4px;
}

.phase-dot.active {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 8px var(--accent);
}

.phase-line {
    width: 2px;
    flex: 1;
    background: var(--border);
    margin-top: 4px;
    min-height: 20px;
}

.phase-body {
    background: var(--surface-2);
    border: 1px solid var(--border);
    padding: 12px 14px;
    flex: 1;
    margin-bottom: 8px;
}

.phase-body.active {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.phase-label {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-dim);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 2px;
}

.phase-val {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink);
}

.phase-body.active .phase-val {
    color: var(--accent);
}

/* stack comparison table */
.stack-compare {
    border: 1px solid var(--border);
    width: 100%;
    border-collapse: collapse;
    font-family: var(--mono);
    margin-top: 40px;
}

.stack-compare th {
    background: var(--surface-2);
    padding: 14px 18px;
    text-align: left;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-dim);
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
}

.stack-compare th:last-child {
    border-right: none;
}

.stack-compare td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
    font-size: 12px;
    vertical-align: top;
}

.stack-compare td:last-child {
    border-right: none;
}

.stack-compare tr:last-child td {
    border-bottom: none;
}

.stack-compare .col-legacy {
    color: var(--warn);
}

.stack-compare .col-risk {
    color: var(--red);
}

.stack-compare .col-target {
    color: var(--accent);
}

.stack-compare .row-label {
    color: var(--ink-muted);
    font-size: 11px;
}

.tech-specs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    margin-top: 40px;
}

.spec-cell {
    background: var(--surface);
    padding: 24px;
}

.spec-cell-label {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-dim);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.spec-cell-val {
    font-family: var(--mono);
    font-size: 14px;
    color: var(--accent);
    margin-bottom: 6px;
    font-weight: 500;
}

.spec-cell-desc {
    font-size: 12px;
    color: var(--ink-muted);
    line-height: 1.5;
}

.packages-table {
    border: 1px solid var(--border);
    width: 100%;
    border-collapse: collapse;
    font-family: var(--mono);
}

.packages-thead th {
    background: var(--surface-2);
    padding: 16px 20px;
    text-align: left;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-dim);
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
    white-space: nowrap;
}

.packages-thead th:last-child {
    border-right: none;
}

.pkg-row {
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

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

.pkg-cell {
    padding: 24px 20px;
    border-right: 1px solid var(--border);
    vertical-align: top;
}

.pkg-cell:last-child {
    border-right: none;
}

.pkg-id {
    font-size: 10px;
    color: var(--ink-dim);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 6px;
}

.pkg-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    display: block;
    margin-bottom: 4px;
}

.pkg-subtitle {
    font-size: 10px;
    color: var(--ink-muted);
    font-family: var(--sans);
    letter-spacing: 0.04em;
}

.pkg-deliverable {
    font-size: 12px;
    color: var(--ink-muted);
    font-family: var(--sans);
    line-height: 1.6;
}

.pkg-deliverable ul {
    list-style: none;
    padding: 0;
}

.pkg-deliverable li {
    padding: 4px 0;
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.pkg-deliverable li::before {
    content: '→';
    color: var(--accent);
    font-size: 11px;
    flex-shrink: 0;
}

.pkg-scope {
    font-size: 12px;
    color: var(--ink-muted);
    font-family: var(--sans);
}

.pkg-outcome {
    font-size: 12px;
    color: var(--ink);
    font-family: var(--sans);
    line-height: 1.6;
    font-weight: 500;
}

.badge-tier {
    display: inline-block;
    font-size: 10px;
    letter-spacing: 0.1em;
    padding: 3px 8px;
    text-transform: uppercase;
    margin-top: 8px;
}

.badge-discovery {
    background: var(--blue-dim);
    color: var(--blue);
    border: 1px solid var(--blue);
}

.badge-migration {
    background: var(--accent-dim);
    color: var(--accent);
    border: 1px solid var(--accent);
}

.badge-partner {
    background: rgba(120, 100, 255, 0.12);
    color: #9d8fff;
    border: 1px solid #9d8fff;
}

.pkg-row.highlight-row .pkg-cell {
    background: var(--accent-dim);
}

.pkg-row.highlight-row .pkg-name {
    color: var(--accent);
}

.why-dan-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    margin-top: 48px;
}

.why-cell {
    background: var(--surface);
    padding: 32px;
}

.why-cell.wide {
    grid-column: span 2;
    background: var(--surface-2);
}

.why-cell h3 {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 12px;
    letter-spacing: 0.04em;
}

.why-cell p {
    font-size: 14px;
    color: var(--ink-muted);
    line-height: 1.7;
}

.why-cell p strong {
    color: var(--ink);
    font-weight: 500;
}

.why-cell.wide blockquote {
    font-family: var(--display);
    font-size: clamp(28px, 4vw, 48px);
    color: var(--ink);
    line-height: 1.1;
    letter-spacing: 0.02em;
}

.why-cell.wide blockquote span {
    color: var(--accent);
}

.credentials-list {
    list-style: none;
    padding: 0;
    margin-top: 8px;
}

.credentials-list li {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink-muted);
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 10px;
    align-items: baseline;
}

.credentials-list li:last-child {
    border-bottom: none;
}

.cred-key {
    color: var(--ink-dim);
    width: 160px;
    flex-shrink: 0;
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.cta-section {
    background: var(--surface-2);
    border: 1px solid var(--border);
    padding: 64px 48px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: center;
}

.cta-section h2 {
    font-family: var(--display);
    font-size: clamp(40px, 5vw, 72px);
    color: var(--ink);
    line-height: 1;
    letter-spacing: 0.02em;
    margin-bottom: 16px;
}

.cta-section h2 span {
    color: var(--accent);
}

.cta-section p {
    font-size: 15px;
    color: var(--ink-muted);
    max-width: 480px;
    line-height: 1.7;
}

.cta-section p strong {
    color: var(--ink);
    font-weight: 500;
}

.cta-schema {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-dim);
    letter-spacing: 0.06em;
    margin-top: 20px;
}

.cta-block {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
    flex-shrink: 0;
}

.btn-primary {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--bg);
    background: var(--accent);
    padding: 16px 32px;
    text-decoration: none;
    display: inline-block;
    border: 2px solid var(--accent);
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-primary:hover {
    background: transparent;
    color: var(--accent);
}

.btn-secondary {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-muted);
    text-decoration: none;
    letter-spacing: 0.08em;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s;
}

.btn-secondary:hover {
    color: var(--ink);
}

footer {
    border-top: 1px solid var(--border);
    padding: 24px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

footer p {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-dim);
    letter-spacing: 0.05em;
}

footer a {
    color: var(--accent);
    text-decoration: none;
}

.fade-in {
    opacity: 0;
    transform: translateY(16px);
    animation: fadeUp 0.6s ease forwards;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

@media (max-width: 900px) {
    nav {
        padding: 0 20px;
    }

    .hero {
        padding: 60px 20px 60px;
    }

    .container {
        padding: 60px 20px;
    }

    .hero-headline {
        font-size: 48px;
    }

    .problem-grid {
        grid-template-columns: 1fr;
    }

    .problem-cell.full-width {
        grid-column: span 1;
    }

    .solution-intro {
        grid-template-columns: 1fr;
    }

    .tech-specs {
        grid-template-columns: 1fr;
    }

    .why-dan-grid {
        grid-template-columns: 1fr;
    }

    .why-cell.wide {
        grid-column: span 1;
    }

    .cta-section {
        grid-template-columns: 1fr;
    }

    .packages-table {
        font-size: 11px;
    }

    .pkg-cell {
        padding: 16px 12px;
    }

    footer {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .hero-data-strip {
        grid-template-columns: 1fr;
    }

    .hero-stat {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .hero-stat:last-child {
        border-bottom: none;
    }

    .stack-compare {
        font-size: 11px;
    }

    .stack-compare td,
    .stack-compare th {
        padding: 10px 12px;
    }
}