:root {
    --bg: #F5F5F7;
    --text: #1D1D1F;
    --text-secondary: #86868B;
    --accent: #000000;
    --surface: #FFFFFF;
    --border: #E5E5EA;
    --success: #34C759;
    --glow: rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* WRAPPER TO KEEP CONTENT PLACEMENT */
.site-wrapper {
    position: relative;
    z-index: 1;
}

/* BUTTONS */
.btn {
    display: inline-block;
    font-weight: 500;
    text-align: center;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn:active {
    transform: scale(0.98);
}

.btn--primary {
    background-color: var(--accent);
    color: #FFF;
    padding: 16px 32px;
    font-size: 1.125rem;
    border: 1px solid var(--accent);
}

.btn--primary:hover {
    box-shadow: 0 4px 20px var(--glow);
    background-color: #333;
}

.btn--outline {
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px 20px;
    font-size: 0.95rem;
    background: transparent;
    backdrop-filter: blur(10px);
}

.btn--outline:hover {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.2);
}

.btn--large {
    padding: 16px 40px;
    font-size: 1.25rem;
    width: 100%;
    max-width: 400px;
    border-radius: 40px;
}

/* HEADER */
.header {
    border-bottom: 1px solid var(--border);
    background: rgba(227, 217, 209, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.header__logo {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.04em;
}

.header__btn {
    border-radius: 40px;
    border-color: rgba(0, 0, 0, 0.15);
}

/* HERO SECTION */
.hero {
    padding: 80px 0 60px;
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero__container {
    max-width: 900px;
    margin: 0 auto;
}

.hero__title {
    font-size: 4rem;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    background: linear-gradient(180deg, #1A1A1A 0%, rgba(26, 26, 26, 0.7) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.highlight {
    color: var(--text-secondary);
    -webkit-text-fill-color: var(--text-secondary);
    font-weight: 400;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

.hero__hint {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 16px;
    font-family: monospace;
}

/* STEPS SECTION */
.steps {
    padding: 60px 0;
    border-top: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.3) 100%);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 64px;
    font-weight: 400;
}

.steps__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.step-card {
    background: var(--surface);
    padding: 32px;
    border-radius: 20px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.step-card:hover {
    border-color: rgba(0, 0, 0, 0.15);
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

.step-card__number {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-family: monospace;
    margin-bottom: 24px;
    letter-spacing: 0.1em;
}

.step-card__title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.step-card__desc {
    color: var(--text-secondary);
    font-weight: 400;
}

/* FEATURES SECTION */
.features {
    padding: 60px 0;
    border-top: 1px solid var(--border);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 64px;
}

.feature-card {
    padding: 32px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--surface);
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.feature-card:hover {
    border-color: rgba(0, 0, 0, 0.15);
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

.feature-card__icon {
    margin-bottom: 24px;
    opacity: 0.8;
}

.feature-card__icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--accent);
}

.feature-card__title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.feature-card__desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 400;
}

/* CTA SECTION */
.cta {
    padding: 80px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0) 70%);
}

.cta__title {
    font-size: 3rem;
    font-weight: 500;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
}

.cta__subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-weight: 400;
}

/* FOOTER */
.footer {
    border-top: 1px solid var(--border);
    padding: 40px 0 24px;
    background: #D5C9C0;
}

.footer__inner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text);
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-size: 0.95rem;
    font-weight: 500;
}

.footer a {
    transition: color 0.2s ease;
}

.footer a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.footer__bottom {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border);
    padding-top: 24px;
    font-family: monospace;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero__title {
        font-size: 2.75rem;
    }

    .cta__title {
        font-size: 2.25rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .btn--large {
        width: 100%;
    }
}