:root {
    --bg: #ffffff;
    --surface: #f8f9fa;
    --border: #e9ecef;
    --text: #212529;
    --text-secondary: #6c757d;
    --accent: #0066cc;
    --accent-light: #e6f2ff;
    --success: #198754;
    --grid: rgba(0, 102, 204, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    font-weight: 300;
    letter-spacing: -0.011em;
}

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

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 1px;
    background: linear-gradient(90deg, var(--accent), #4dabf7);
    z-index: 10000;
    transition: width 0.1s;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in.delay-1 {
    transition-delay: 0.1s;
}

.fade-in.delay-2 {
    transition-delay: 0.2s;
}

.fade-in.delay-3 {
    transition-delay: 0.3s;
}

.fade-in.delay-4 {
    transition-delay: 0.4s;
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 1rem 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text);
    font-size: 1.25rem;
    font-weight: 400;
}

.logo-icon {
    width: 28px;
    height: 28px;
    background: var(--accent);
    border-radius: 6px;
    position: relative;
}

.logo-icon::before {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border: 2px solid white;
    border-radius: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.logo-icon::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 1px;
    bottom: 4px;
    right: 4px;
}

.nav {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-item {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 400;
    position: relative;
    padding: 0.5rem 0;
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-item:hover::after {
    width: 100%;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 2rem;
    border: 1px solid rgba(0, 102, 204, 0.2);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 300;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-title span {
    font-weight: 400;
    background: linear-gradient(135deg, #0066cc, #3399ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: 3rem;
    font-weight: 300;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 4rem;
}

.stat {
    text-align: left;
}

.stat-text {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.25rem;
    margin-left: 5px;
    font-variant-numeric: tabular-nums;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.25rem;
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    max-width: 200px;
}

.hero-background {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    opacity: 0.3;
}

.grid-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: gridMove 40s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(40px);
    }
}

.section {
    padding: 6rem 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
}

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

.feature-card {
    background: var(--surface);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.feature-card:hover {
    border-color: var(--accent);
}

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

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

.approach-section {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.approach-steps {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

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

.step-number {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--accent);
    min-width: 40px;
    font-variant-numeric: tabular-nums;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.875rem;
}

.access-section {
    background: linear-gradient(135deg, var(--surface) 0%, #ffffff 100%);
    border-radius: 24px;
    padding: 4rem;
    margin: 4rem auto;
    max-width: 1000px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
}

.access-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 102, 204, 0.03) 0%, transparent 70%);
}

.access-title {
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    text-align: center;
}

.access-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 700px;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.access-criteria {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.criterion {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.criterion h4 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
}

.criterion p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.client-obligations {
    background: rgba(255, 245, 245, 0.8);
    border: 1px solid rgba(220, 53, 69, 0.2);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 2rem;
}

.client-obligations h4 {
    color: #dc3545;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.client-obligations p {
    color: var(--text-secondary);
    font-size: 0.75rem;
    line-height: 1.5;
}

.cta-section {
    text-align: center;
    padding: 6rem 0;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
}

.cta-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.6;
}

.infrastructure-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: 2rem;
}

footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 3rem 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.footer-content .logo {
    text-decoration: none;
    color: inherit;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-legal {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

#backToTop {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
    z-index: 1000;
    padding: 0;
}

#backToTop.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#backToTop:hover {
    background: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 102, 204, 0.4);
}

#backToTop:active {
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .stat-label {
        font-size: 0.875rem;
        color: var(--text-secondary);
        letter-spacing: 0.5px;
        max-width: none;
    }

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

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

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

    .nav {
        display: none;
    }

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

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .access-section {
        padding: 2rem;
        margin: 2rem 1rem;
    }

    .access-criteria {
        grid-template-columns: 1fr;
    }

    #backToTop {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .features-grid {
        gap: 1rem;
    }

    .container {
        padding: 0 1rem;
    }

    .step {
        flex-direction: column;
        gap: 1rem;
    }

    #backToTop {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }
}