:root {
    --bg-color: #ffffff;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --accent-color: #0071e3;
    --card-bg: #f5f5f7;
    --card-border: rgba(0, 0, 0, 0.05);
    --nav-bg: rgba(255, 255, 255, 0.72);
    --spacing: 80px;
    --font-family: 'Inter', -apple-system, system-ui, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Typography Refinement */
h1 {
    font-size: 56px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

h2 {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 20px;
    font-weight: 600;
}

p {
    font-size: 18px;
    color: var(--text-secondary);
}

/* Navigation - Ultra Minimalist */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
}

.nav-logo {
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 400;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.nav-links a:hover {
    opacity: 1;
}

/* Hero Section - Clean Center */
.hero {
    height: 90vh;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 40px;
    overflow: hidden;
}

.hero-bg-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: opacity(0.3) grayscale(50%);
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    margin-bottom: 24px;
}

.hero p {
    font-size: 24px;
    margin-bottom: 40px;
}

/* Centered Section Structure */
.centered-section {
    padding: 120px 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-subtitle {
    text-transform: uppercase;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--accent-color);
    margin-top: 8px;
}

/* Grid System - Solid structure */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid transparent;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    cursor: pointer;
}

.service-card:hover {
    background: #fff;
    border-color: var(--card-border);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

.card-symbol {
    color: var(--accent-color);
    margin-bottom: 24px;
}

.service-card h3 {
    margin-bottom: 12px;
}

.service-card .short-desc {
    font-size: 15px;
    margin-bottom: 16px;
}

.full-desc {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.5s ease;
    font-size: 14px;
    line-height: 1.6;
}

.service-card.active .full-desc {
    max-height: 200px;
    opacity: 1;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* Landing Cards - Structured & Balanced */
.landing-summary-section {
    padding: 60px 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.landing-card {
    background: var(--card-bg);
    border-radius: 40px;
    display: flex;
    overflow: hidden;
    min-height: 450px;
}

.landing-card.reverse {
    flex-direction: row-reverse;
}

.landing-image-wrapper {
    flex: 1.2;
    position: relative;
}

.landing-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.landing-content {
    flex: 1;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.tag {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-color);
    margin-bottom: 16px;
}

.landing-content h2 {
    margin-bottom: 20px;
    font-size: 32px;
}

.landing-content p {
    margin-bottom: 32px;
}

.landing-perks {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.landing-perks span {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.cta-link {
    text-decoration: none;
    color: var(--accent-color);
    font-weight: 600;
    font-size: 16px;
}

/* Buttons */
.cta-button {
    display: inline-block;
    padding: 12px 28px;
    background: var(--accent-color);
    color: #fff;
    border-radius: 980px;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s;
}

.cta-button:hover {
    opacity: 0.9;
}

.cta-button.large {
    padding: 18px 48px;
    font-size: 20px;
}

/* Footer */
footer {
    padding: 120px 40px;
    text-align: center;
    background: #fbfbfd;
}

.footer-content h2 {
    margin-bottom: 16px;
}

.footer-content p {
    margin-bottom: 40px;
}

.footer-bottom {
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 14px;
}

/* Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

/* Responsive */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
    }

    .landing-card,
    .landing-card.reverse {
        flex-direction: column;
    }

    h1 {
        font-size: 40px;
    }

    .hero p {
        font-size: 20px;
    }
}