:root {
    --bg-main: #0a0a0c;
    --bg-card: #121216;
    --border-color: #222227;
    --text-primary: #f4f4f6;
    --text-secondary: #8e8e99;
    --accent-glow: #00ff66;
    --accent-blue: #0077ff;
    --danger: #ff4d4d;
    --success-bg: rgba(0, 255, 102, 0.08);
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    --shadow-glow: 0 0 32px rgba(0, 255, 102, 0.12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: radial-gradient(circle at top right, rgba(0, 119, 255, 0.08), transparent 28rem), var(--bg-main);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body.nav-open {
    overflow: hidden;
}

img, svg {
    max-width: 100%;
}

button, input, textarea, select {
    font: inherit;
}

button {
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--accent-glow);
    outline-offset: 4px;
    box-shadow: 0 0 18px rgba(0, 255, 102, 0.22);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -4rem;
    background: var(--text-primary);
    color: var(--bg-main);
    padding: 0.75rem 1rem;
    z-index: 999;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 1rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    background: rgba(10, 10, 12, 0.85);
    backdrop-filter: blur(12px);
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
    text-decoration: none;
    color: var(--text-primary);
    white-space: nowrap;
}

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

nav {
    display: flex;
    align-items: center;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

nav a:hover, nav a.active {
    color: var(--text-primary);
}

.nav-cta {
    border: 1px solid var(--border-color);
    padding: 0.55rem 0.85rem;
}

.nav-cta:hover, .nav-cta.active {
    border-color: var(--accent-glow);
    box-shadow: var(--shadow-glow);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    background: transparent;
    cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
    display: block;
    height: 2px;
    width: 24px;
    margin: 5px auto;
    background: var(--text-primary);
    transition: var(--transition);
}

.btn {
    display: inline-block;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--text-primary);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    text-align: center;
}

.btn:hover:not(:disabled) {
    border-color: var(--accent-glow);
    color: var(--accent-glow);
    box-shadow: var(--shadow-glow);
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-main);
}

.btn-primary:hover:not(:disabled) {
    background: transparent;
    color: var(--text-primary);
    box-shadow: 0 0 20px rgba(244, 244, 246, 0.15);
}

.section-pad { padding: 7rem 0 4rem; }
.section-pad-sm { padding: 4rem 0; }

.eyebrow {
    color: var(--accent-glow);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

h1, h2, h3 {
    line-height: 1.05;
    letter-spacing: -0.04em;
}

h1 { font-size: clamp(3rem, 8vw, 6.8rem); max-width: 980px; }
h2 { font-size: clamp(2rem, 5vw, 4rem); max-width: 850px; }
h3 { font-size: 1.35rem; margin-bottom: 1rem; }

p { color: var(--text-secondary); }

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.7fr);
    gap: 4rem;
    align-items: center;
}

.hero-lead {
    font-size: clamp(1.05rem, 2vw, 1.35rem);
    max-width: 720px;
    margin-top: 1.5rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.metrics-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border-color);
    border: 1px solid var(--border-color);
    margin-top: 3rem;
}

.metrics-strip div {
    background: rgba(18, 18, 22, 0.85);
    padding: 1.25rem;
}

.metrics-strip dt {
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1.5rem;
}

.metrics-strip dd {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.terminal-card, .roi-card, .multi-step-form {
    background: linear-gradient(180deg, rgba(18, 18, 22, 0.92), rgba(12, 12, 15, 0.98));
    border: 1px solid var(--border-color);
    box-shadow: 0 0 80px rgba(0, 119, 255, 0.08);
}

.terminal-top {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.terminal-top span {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--border-color);
}

.terminal-top strong { margin-left: auto; font-weight: 500; }

.terminal-lines { padding: 1.4rem; }
.terminal-lines p { font-family: var(--font-mono); font-size: 0.86rem; padding: 0.7rem 0; border-bottom: 1px solid rgba(34, 34, 39, 0.7); }
.terminal-lines span { color: var(--accent-blue); margin-right: 0.75rem; }
.terminal-lines .success { color: var(--accent-glow); }

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 4rem 0;
}

.compact-grid { margin: 0; }

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.card:hover {
    border-color: var(--accent-glow);
    transform: translateY(-2px);
}

.card ul {
    list-style: none;
    margin-top: 1.5rem;
}

.card li {
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    padding: 0.7rem 0;
}

.icon-box, .agent-type {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 32px;
    padding: 0 0.65rem;
    border: 1px solid var(--border-color);
    color: var(--accent-glow);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
}

.split-panel {
    display: grid;
    grid-template-columns: 0.8fr 1fr;
    gap: 3rem;
    align-items: start;
}

.muted { margin-top: 1rem; max-width: 560px; }

.roi-card { padding: 2rem; }
.roi-card label { display: flex; justify-content: space-between; gap: 1rem; color: var(--text-secondary); margin-top: 1.2rem; }
.roi-card output { color: var(--text-primary); font-family: var(--font-mono); }

.input-range {
    width: 100%;
    accent-color: var(--accent-glow);
    background: var(--border-color);
    margin: 1rem 0;
}

.roi-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border-color);
    border: 1px solid var(--border-color);
    margin-top: 2rem;
}

.roi-results div {
    background: var(--bg-main);
    padding: 1rem;
}

.roi-results span {
    display: block;
    color: var(--text-secondary);
    font-size: 0.78rem;
}

.roi-results strong {
    display: block;
    margin-top: 0.5rem;
    color: var(--accent-glow);
    font-family: var(--font-mono);
}

.cta-band {
    border: 1px solid var(--border-color);
    padding: clamp(2rem, 5vw, 4rem);
    background: radial-gradient(circle at right, rgba(0, 255, 102, 0.12), transparent 24rem), var(--bg-card);
}

.cta-band .btn { margin-top: 2rem; }

.page-hero h1 { font-size: clamp(2.5rem, 7vw, 5.8rem); }

.tab-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.tab-list button {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.85rem 1rem;
    cursor: pointer;
    font-family: var(--font-mono);
}

.tab-list button[aria-selected="true"] {
    color: var(--accent-glow);
    border-color: var(--accent-glow);
    box-shadow: var(--shadow-glow);
}

.timeline {
    list-style: none;
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.timeline li {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 1rem;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    padding: 1.3rem;
}

.timeline strong { color: var(--accent-glow); font-family: var(--font-mono); }
.timeline span { color: var(--text-secondary); }

.filter-bar {
    display: grid;
    gap: 0.75rem;
    max-width: 640px;
}

.filter-bar label, .multi-step-form label {
    color: var(--text-secondary);
}

input, textarea, select {
    width: 100%;
    background: #09090b;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.9rem 1rem;
    border-radius: 0;
}

textarea { resize: vertical; }

.empty-state {
    border: 1px dashed var(--border-color);
    padding: 2rem;
    text-align: center;
}

.architecture {
    display: grid;
    gap: 1rem;
}

.stack-layer {
    display: grid;
    grid-template-columns: 130px 220px 1fr;
    gap: 1.5rem;
    align-items: center;
    padding: 1.4rem;
    border: 1px solid var(--border-color);
    background: linear-gradient(90deg, rgba(0, 119, 255, 0.08), rgba(18, 18, 22, 0.9));
}

.stack-layer span {
    color: var(--accent-glow);
    font-family: var(--font-mono);
    font-size: 0.82rem;
}

.stack-layer h3 { margin: 0; }

.multi-step-form {
    max-width: 760px;
    margin: 0 auto;
    padding: 2rem;
}

.progress {
    height: 6px;
    background: var(--border-color);
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress span {
    display: block;
    height: 100%;
    width: 25%;
    background: var(--accent-glow);
    box-shadow: var(--shadow-glow);
    transition: width 0.3s ease;
}

fieldset {
    border: 0;
    display: grid;
    gap: 1rem;
}

legend {
    font-size: 1.7rem;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.checkbox-row {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.checkbox-row input {
    width: auto;
    margin-top: 0.35rem;
}

.form-actions {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
}

.form-summary {
    border: 1px solid var(--border-color);
    background: rgba(0, 255, 102, 0.04);
    padding: 1rem;
    color: var(--text-secondary);
}

.field-error {
    color: var(--danger);
    font-size: 0.85rem;
}

[aria-invalid="true"] {
    border-color: var(--danger);
}

.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

footer {
    border-top: 1px solid var(--border-color);
    padding: 4rem 0;
    margin-top: 8rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
    .reveal { opacity: 1; transform: none; }
}

@media (max-width: 900px) {
    .nav-toggle { display: block; }
    nav {
        position: fixed;
        inset: 74px 0 auto 0;
        display: grid;
        gap: 0;
        background: rgba(10, 10, 12, 0.98);
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-120%);
        transition: transform 0.25s ease;
        padding: 1rem 2rem 2rem;
    }
    body.nav-open nav { transform: translateY(0); }
    nav a { margin: 0; padding: 1rem 0; border-bottom: 1px solid var(--border-color); }
    .nav-cta { border: 0; border-bottom: 1px solid var(--border-color); padding: 1rem 0; }
    .hero-grid, .split-panel { grid-template-columns: 1fr; }
    .stack-layer { grid-template-columns: 1fr; gap: 0.5rem; }
    .roi-results { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .container { padding: 0 1rem; }
    .section-pad { padding: 4.5rem 0 2.5rem; }
    .section-pad-sm { padding: 2.5rem 0; }
    .metrics-strip { grid-template-columns: 1fr; }
    .timeline li { grid-template-columns: 1fr; }
    .form-actions, .footer-grid { flex-direction: column; }
    .card, .roi-card, .multi-step-form { padding: 1.4rem; }
}