/* Global Reset & Base Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    /* B2B SaaS Color Palette */
    --color-primary: #2563EB; /* Corporate Blue */
    --color-primary-dark: #1E40AF;
    --color-secondary: #0F172A; /* Dark Navy Background */
    --color-accent: #38BDF8; /* Cyan for data highlights */
    --color-success: #10B981;
    --color-bg: #FFFFFF;
    --color-bg-alt: #F8FAFC;
    --color-text-main: #1E293B;
    --color-text-secondary: #64748B;
    --color-border: #E2E8F0;
    --font-main: 'Inter', 'Noto Sans SC', sans-serif;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.logo .icon {
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

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

.nav-cta {
    display: flex;
    gap: 15px;
}

.btn-ghost {
    padding: 8px 16px;
    color: var(--color-text-main);
    font-weight: 500;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    padding: 8px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
}

/* Hero Section */
.hero {
    padding-top: 140px;
    padding-bottom: 80px;
    background: radial-gradient(circle at top right, #eff6ff, #fff);
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    font-weight: 800;
    color: var(--color-secondary);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-content h1 span {
    color: var(--color-primary);
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.hero-image {
    position: relative;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
    background: #fff;
    padding: 10px;
    border: 1px solid var(--color-border);
}

/* Features Grid */
.features {
    padding: 100px 0;
    background: var(--color-bg);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.tag {
    display: inline-block;
    padding: 4px 12px;
    background: #EFF6FF;
    color: var(--color-primary);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 16px;
}

.section-desc {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.feature-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all 0.3s;
    background: #fff;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: #EFF6FF;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-secondary);
}

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

/* Data Demo Section (Dark Theme) */
.data-demo {
    background: var(--color-secondary);
    color: white;
    padding: 100px 0;
    overflow: hidden;
}

.data-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 60px;
    align-items: center;
}

.data-text {
    flex: 1;
}

.data-text h2 {
    font-size: 2.5rem;
    margin-bottom: 24px;
}

.data-text p {
    font-size: 1.1rem;
    color: #94A3B8;
    margin-bottom: 30px;
}

.check-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: #E2E8F0;
}

.check-list i {
    color: var(--color-accent);
}

.data-visual {
    flex: 1;
    position: relative;
    /* Simulate a chart with pure CSS or simple mock elements */
    height: 400px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Stats/Social Proof */
.stats {
    padding: 60px 0;
    border-bottom: 1px solid var(--color-border);
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.stat-item {
    text-align: center;
}

.stat-num {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}

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

/* Footer */
footer {
    background: var(--color-bg-alt);
    padding: 80px 0 30px;
    margin-top: 50px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-brand h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-secondary);
}

.footer-brand p {
    color: var(--color-text-secondary);
    max-width: 300px;
}

.footer-links h5 {
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-secondary);
}

.footer-links li {
    margin-bottom: 12px;
}

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

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

@media (max-width: 768px) {
    .hero-container, .data-container, .features-grid, .footer-content {
        grid-template-columns: 1fr;
    }
    
    .hero {
        padding-top: 100px;
        text-align: center;
    }

    .hero-actions {
        justify-content: center;
    }
    
    .hero-image {
        display: none; /* Simplify on mobile */
    }

    .nav-links {
        display: none;
    }
}