:root {
    --neutral-50: #fafafa;
    --neutral-100: #f4f4f5;
    --neutral-200: #e4e4e7;
    --neutral-300: #d4d4d8;
    --neutral-400: #a1a1aa;
    --neutral-500: #71717a;
    --neutral-600: #52525b;
    --neutral-700: #3f3f46;
    --neutral-800: #27272a;
    --neutral-900: #18181b;

    --blue-50: #eff6ff;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-900: #1e3a8a;

    --emerald-500: #10b981;
    --emerald-600: #059669;

    --background: #ffffff;
    --surface: var(--neutral-50);
    --border: var(--neutral-200);
    --text-primary: var(--neutral-900);
    --text-secondary: var(--neutral-600);
    --text-muted: var(--neutral-500);
    --accent: var(--blue-600);
    --accent-hover: var(--blue-700);
    --accent-light: var(--blue-50);

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.07), 0 4px 6px -4px rgb(0 0 0 / 0.05);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.05);

    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px) saturate(180%);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s var(--ease-out);
}

header.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.9);
    }
}

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

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}

nav a:hover {
    color: var(--text-primary);
}

.btn-nav {
    background: var(--accent);
    color: white;
    padding: 0.625rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all 0.2s var(--ease-out);
}

.btn-nav:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Hero Section */
.hero {
    padding: 6rem 2rem 8rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1000px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-light) 0%, transparent 70%);
    opacity: 0.4;
    z-index: -1;
}

.hero-content {
    max-width: 880px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.hero-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--emerald-500);
    border-radius: 50%;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2.5rem;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.2s var(--ease-out);
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 1.5px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Section Styles */
section {
    padding: 5rem 2rem;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Problem Section */
.problem-section {
    background: linear-gradient(135deg, var(--blue-50) 0%, white 100%);
    border-radius: 1.5rem;
    padding: 4rem;
    margin-bottom: 5rem;
    border: 1px solid var(--border);
}

.problem-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.problem-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 700px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.problem-item {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border);
    transition: all 0.3s var(--ease-out);
}

.problem-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.problem-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.problem-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 1.25rem;
    padding: 3rem;
    transition: all 0.3s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--emerald-500));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s var(--ease-out);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent);
}

.service-number {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
    display: inline-block;
    background: var(--accent-light);
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.service-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.service-features li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.service-features li::before {
    content: '✓';
    color: var(--emerald-600);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

/* Security Section */
.security-section {
    background: linear-gradient(135deg, var(--surface) 0%, white 100%);
    border-radius: 1.5rem;
    padding: 5rem 4rem;
    border: 1px solid var(--border);
    margin-top: 5rem;
}

.security-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.security-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: start;
}

.security-features {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.security-feature {
    display: flex;
    gap: 1.5rem;
}

.security-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-light);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.25rem;
    color: var(--accent);
    font-weight: 700;
}

.security-feature h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.security-feature p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.9375rem;
}

.industries-list {
    background: white;
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 3rem;
}

.industries-list h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.industries-list ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.industries-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.industries-list li:last-child {
    border-bottom: none;
}

.industries-list li::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    flex-shrink: 0;
}

/* Stats Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin: 5rem 0;
}

.stat-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s var(--ease-out);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
    border-radius: 2rem;
    padding: 5rem 4rem;
    text-align: center;
    margin-top: 5rem;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.cta-section h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: white;
    margin-bottom: 1.5rem;
    position: relative;
}

.cta-section p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.cta-section .btn-primary {
    background: white;
    color: var(--accent);
}

.cta-section .btn-primary:hover {
    background: var(--neutral-100);
}

.cta-section .btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

.cta-section .btn-secondary:hover {
    border-color: white;
    background: rgba(255, 255, 255, 0.1);
}

/* Footer */
footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 4rem 2rem 2rem;
    margin-top: 5rem;
}

.footer-content {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-brand p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9375rem;
}

.footer-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .security-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 1.5rem;
    }

    nav {
        display: none;
    }

    .hero {
        padding: 4rem 1.5rem 5rem;
    }

    section {
        padding: 3rem 1.5rem;
    }

    .problem-section,
    .security-section,
    .cta-section {
        padding: 3rem 2rem;
    }

    .services-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

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

    .cta-group {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Smooth animations on scroll */
@media (prefers-reduced-motion: no-preference) {
    .fade-in {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeIn 0.6s var(--ease-out) forwards;
    }

    @keyframes fadeIn {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}