:root {
    --radius: 0.75rem;

    /* Brand palette */
    --emerald-deep: oklch(0.28 0.06 165);
    --emerald: oklch(0.42 0.09 165);
    --emerald-bright: oklch(0.62 0.13 162);
    --gold: oklch(0.78 0.12 85);
    --gold-foreground: oklch(0.22 0.04 160);
    --cream: oklch(0.97 0.015 90);

    /* Light editorial surface */
    --background: oklch(0.985 0.008 90);
    --foreground: oklch(0.22 0.04 160);
    --card: oklch(1 0 0);
    --card-foreground: oklch(0.22 0.04 160);
    --primary: oklch(0.32 0.07 165);
    --primary-foreground: oklch(0.97 0.015 90);
    --secondary: oklch(0.94 0.02 90);
    --secondary-foreground: oklch(0.32 0.07 165);
    --muted: oklch(0.95 0.012 90);
    --muted-foreground: oklch(0.48 0.02 155);
    --accent: oklch(0.78 0.12 85);
    --accent-foreground: oklch(0.22 0.04 160);
    --border: oklch(0.9 0.018 90);
    --input: oklch(0.92 0.015 90);
    --success: oklch(0.62 0.13 162);
    --danger: oklch(0.55 0.21 27);

    /* Gradients */
    --gradient-emerald: linear-gradient(135deg, var(--emerald-deep) 0%, var(--emerald) 100%);
    --gradient-gold: linear-gradient(135deg, oklch(0.82 0.13 88) 0%, oklch(0.72 0.11 75) 100%);
    --gradient-hero: radial-gradient(ellipse at top right, oklch(0.42 0.09 165 / 0.1), transparent 60%),
        radial-gradient(ellipse at bottom left, oklch(0.78 0.12 85 / 0.08), transparent 55%);

    /* Shadows */
    --shadow-elegant: 0 1px 2px oklch(0.22 0.04 160 / 0.04), 0 8px 24px -8px oklch(0.22 0.04 160 / 0.12);
    --shadow-emerald: 0 10px 40px -12px oklch(0.42 0.09 165 / 0.45);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border-color: var(--border);
}

body {
    font-family: "DM Sans", ui-sans-serif, system-ui, sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    padding-bottom: 7rem;
}

h1,
h2,
h3,
h4,
.font-display {
    font-family: "Space Grotesk", sans-serif;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navbar */
nav {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    background: var(--gradient-hero);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-emerald);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--muted-foreground);
    max-width: 820px;
    margin: 0 auto 2.5rem;
}

.btn-group {
    display: flex;
    justify-content: center;
    gap: 1rem;
    position: fixed;
    left: 50%;
    bottom: 1.25rem;
    z-index: 60;
    width: min(1120px, calc(100% - 2rem));
    transform: translateX(-50%);
    flex-wrap: wrap;
    padding: 0.75rem;
    border: 1px solid oklch(0.9 0.018 90 / 0.86);
    border-radius: calc(var(--radius) * 1.25);
    background: oklch(0.985 0.008 90 / 0.92);
    box-shadow: 0 16px 48px -20px oklch(0.22 0.04 160 / 0.45);
    backdrop-filter: blur(18px);
}

.btn-group .btn {
    padding: 0.85rem 1.35rem;
    font-size: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--gradient-emerald);
    color: white;
    border: none;
}

.btn-primary:hover {
    box-shadow: var(--shadow-emerald);
    transform: translateY(-1px);
}

.btn-outline {
    background: white;
    border: 1px solid var(--border);
    color: var(--foreground);
}

.btn-outline:hover {
    background: var(--secondary);
    border-color: var(--emerald);
}

/* Concepts Section */
.concepts {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--muted-foreground);
    font-size: 1.125rem;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.concept-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-elegant);
}

.concept-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-emerald);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 1.5rem;
}

.concept-card h3 {
    margin-bottom: 1rem;
}

.concept-card p {
    color: var(--muted-foreground);
    font-size: 0.9375rem;
}

/* V2 marketing sections */
.price-card,
.agent-card,
.proof-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) * 1.25);
    box-shadow: var(--shadow-elegant);
}

.pricing,
.agentic,
.proof {
    padding: 6rem 0;
}

.pricing-grid,
.agent-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.price-card,
.agent-card {
    padding: 2rem;
}

.price-card.featured {
    border-color: oklch(0.62 0.13 162 / 0.45);
    background: linear-gradient(180deg, oklch(0.62 0.13 162 / 0.08), var(--card));
}

.eyebrow {
    display: inline-flex;
    margin-bottom: 0.75rem;
    color: var(--emerald);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.price-card h3 {
    margin-bottom: 1rem;
    font-size: 3rem;
    color: var(--foreground);
}

.price-card p,
.agent-card p,
.split-section p,
.dark-section p,
.proof-card p {
    color: var(--muted-foreground);
}

.split-section {
    padding: 6rem 0;
    background: var(--secondary);
}

.split-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
    align-items: start;
}

.split-grid h2,
.proof-card h2 {
    margin-bottom: 1rem;
    font-size: 2.75rem;
}

.stack-list {
    display: grid;
    gap: 1rem;
}

.stack-list>div {
    padding: 1.5rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-elegant);
}

.stack-list h3,
.agent-card h3 {
    margin-bottom: 0.65rem;
}

.dark-section {
    padding: 6rem 0;
    background: var(--gradient-emerald);
    color: var(--cream);
}

.dark-section .eyebrow {
    color: var(--gold);
}

.dark-section p {
    color: oklch(0.97 0.015 90 / 0.78);
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.security-grid div {
    padding: 1.25rem;
    border: 1px solid oklch(0.97 0.015 90 / 0.16);
    border-radius: var(--radius);
    background: oklch(0.97 0.015 90 / 0.08);
    color: oklch(0.97 0.015 90 / 0.9);
}

.agent-card {
    display: flex;
    flex-direction: column;
}

.text-link {
    display: inline-flex;
    margin-top: 1rem;
    color: var(--emerald);
    font-weight: 700;
    text-decoration: none;
}

.text-link:hover {
    text-decoration: underline;
}

.proof {
    padding-top: 0;
}

.proof-card {
    padding: 3rem;
    text-align: center;
    background: linear-gradient(135deg, var(--card), oklch(0.94 0.02 90));
}

.proof-card p {
    max-width: 820px;
    margin: 0 auto;
    font-size: 1.125rem;
}

.text-muted {
    color: var(--muted-foreground);
}

/* Invitation Section */
.invitation {
    padding: 6rem 0;
    background-color: var(--secondary);
}

.invite-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--card);
    padding: 3rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-elegant);
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

input {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background-color: var(--input);
    font-size: 1rem;
}

input:focus {
    outline: none;
    border-color: var(--emerald);
}

.challenge-box {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    padding: 1rem;
    background: var(--secondary);
    border-radius: var(--radius);
}

/* Utilities */
.honeypot {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    height: 0;
    width: 0;
    z-index: -1;
}

footer {
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--muted-foreground);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1200px) {
    .container {
        max-width: 1100px;
    }

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

@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3.5rem;
    }

    nav {
        padding: 0 1rem;
    }
}

@media (max-width: 768px) {
    body {
        padding-bottom: 11rem;
    }

    nav {
        flex-direction: column;
        height: auto;
        padding: 1.5rem 0;
        gap: 1.5rem;
    }

    nav>div:last-child {
        width: 100%;
        justify-content: center;
    }

    nav .btn {
        flex: 1;
        text-align: center;
    }

    .nav-beta-btn {
        display: none;
    }

    .hero {
        padding: 4rem 0;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.125rem;
    }

    .hero .btn-group {
        display: grid;
        grid-template-columns: 1fr 1fr;
        width: calc(100% - 1rem);
        max-width: none;
        gap: 0.5rem;
    }

    .hero .btn {
        width: 100%;
        min-height: 44px;
        padding: 0.75rem;
        font-size: 0.9rem;
    }

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

    .pricing-grid,
    .agent-grid,
    .split-grid,
    .security-grid {
        grid-template-columns: 1fr;
    }

    .split-grid {
        gap: 2rem;
    }

    .split-grid h2,
    .proof-card h2 {
        font-size: 2rem;
    }

    .proof-card {
        padding: 2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .invite-card {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.25rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .concept-card {
        padding: 1.5rem;
    }

    .challenge-box {
        flex-direction: column;
        align-items: flex-start;
    }

    .challenge-box input {
        width: 100% !important;
    }
}

@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }

    .hero h1 {
        font-size: 5rem;
    }
}