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

:root {
    --black: #0a0a0a;
    --black-light: #141414;
    --cream: #f5f5f0;
    --cream-dim: #e8e8e3;
    --warm-gray: #8a8a85;
    --warm-gray-dark: #4a4a48;
    --border: rgba(245, 245, 240, 0.1);
    --border-strong: rgba(245, 245, 240, 0.2);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--black);
    color: var(--cream);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.5rem 2rem;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.wordmark {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--cream);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.8125rem;
    color: var(--warm-gray);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--cream);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem;
    border-bottom: 1px solid var(--border);
}

.hero-content {
    max-width: 720px;
    text-align: center;
}

.overline {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.hero-sub {
    font-size: 1.125rem;
    color: var(--warm-gray);
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-bottom: 1px solid var(--border);
}

.feature {
    padding: 4rem 2.5rem;
    border-right: 1px solid var(--border);
}

.feature:last-child {
    border-right: none;
}

.feature-number {
    display: block;
    font-size: 0.75rem;
    color: var(--warm-gray-dark);
    margin-bottom: 2rem;
    font-variant-numeric: tabular-nums;
}

.feature h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.feature p {
    font-size: 0.875rem;
    color: var(--warm-gray);
    line-height: 1.5;
}

/* Features Alt Row */
.features-alt {
    border-top: none;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
}

.features-alt .feature {
    background: var(--black-light);
}

.features-alt .feature:last-child {
    border-right: none;
}

/* Stats */
.stats {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 5rem 2rem;
    gap: 4rem;
    border-bottom: 1px solid var(--border);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--warm-gray);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.stat-divider {
    width: 1px;
    height: 3rem;
    background: var(--border-strong);
}

/* Integration Section */
.integration {
    padding: 6rem 2rem;
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.integration-content {
    max-width: 540px;
    margin: 0 auto;
}

.integration h2 {
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.integration-sub {
    font-size: 1rem;
    color: var(--warm-gray);
    line-height: 1.6;
}

/* Apply Section */
.apply {
    padding: 8rem 2rem;
}

.apply-container {
    max-width: 480px;
    margin: 0 auto;
}

.apply-header {
    text-align: center;
    margin-bottom: 3rem;
}

.apply-header h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.apply-header p {
    font-size: 0.9375rem;
    color: var(--warm-gray);
}

.application-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-field label {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--warm-gray);
}

.form-field input {
    padding: 0.875rem 1rem;
    background: var(--black-light);
    border: 1px solid var(--border-strong);
    color: var(--cream);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-field input::placeholder {
    color: var(--warm-gray-dark);
}

.form-field input:focus {
    outline: none;
    border-color: var(--warm-gray);
}

.form-field input.error {
    border-color: #c44;
}

.field-note {
    font-size: 0.75rem;
    color: var(--warm-gray-dark);
}

.error-message {
    display: none;
    font-size: 0.75rem;
    color: #c44;
}

.error-message.visible {
    display: block;
}

.submit-btn {
    margin-top: 1rem;
    padding: 1rem 2rem;
    background: var(--cream);
    color: var(--black);
    border: none;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: opacity 0.2s;
    position: relative;
}

.submit-btn:hover {
    opacity: 0.9;
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.submit-btn.loading .btn-text {
    visibility: hidden;
}

.submit-btn.loading .btn-loading {
    display: block;
}

.btn-loading {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 18px;
    height: 18px;
    border: 2px solid var(--warm-gray-dark);
    border-top-color: var(--black);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Success State */
.success-state {
    display: none;
    text-align: center;
    padding: 3rem 0;
}

.success-state.visible {
    display: block;
}

.success-msg {
    font-size: 1rem;
    color: var(--cream);
}

/* Footer */
footer {
    padding: 3rem 2rem;
    border-top: 1px solid var(--border);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    display: flex;
    align-items: baseline;
    gap: 1rem;
}

.footer-tagline {
    font-size: 0.75rem;
    color: var(--warm-gray-dark);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    font-size: 0.8125rem;
    color: var(--warm-gray);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--cream);
}

/* Responsive */
@media (max-width: 900px) {
    .features {
        grid-template-columns: repeat(2, 1fr);
    }
    .features-alt {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature:nth-child(even) {
        border-right: none;
    }

    .feature:nth-child(1),
    .feature:nth-child(2) {
        border-bottom: 1px solid var(--border);
    }

    .feature:nth-child(3),
    .feature:nth-child(4) {
        border-bottom: none;
    }

    .features-alt .feature:nth-child(1),
    .features-alt .feature:nth-child(2) {
        border-bottom: 1px solid var(--border);
    }
}

@media (max-width: 600px) {
    nav {
        padding: 1rem 1.5rem;
    }

    .hero {
        padding: 6rem 1.5rem;
    }

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

    .feature {
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 3rem 1.5rem;
    }

    .feature:last-child {
        border-bottom: none;
    }

    .stats {
        flex-direction: column;
        gap: 2.5rem;
        padding: 4rem 1.5rem;
    }

    .stat-divider {
        width: 3rem;
        height: 1px;
    }

    .integration {
        padding: 4rem 1.5rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .apply {
        padding: 5rem 1.5rem;
    }

    .footer-inner {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .footer-brand {
        flex-direction: column;
        gap: 0.5rem;
    }
}