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

:root {
    --purple: #6a4793;
    --light-grey: #f5f5f5;
    --white: #ffffff;
    --text-dark: #1a1a1a;
    --text-grey: #666666;
    --border: #e0e0e0;
}

body {
    font-family: 'Noto Sans', sans-serif;
    background: var(--light-grey);
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--white);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    display: block;
}

nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    transition: color 0.2s;
}

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

.cta-btn {
    background: var(--purple);
    color: white !important;
    padding: 10px 20px;
    border-radius: 6px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(106, 71, 147, 0.3);
}

/* Hero Section */
.hero {
    background: var(--white);
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

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

.hero-description {
    font-size: 20px;
    color: var(--text-grey);
    max-width: 700px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 60px;
}

.primary-btn {
    background: var(--purple);
    color: white;
    padding: 15px 35px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(106, 71, 147, 0.3);
}

.secondary-btn {
    background: transparent;
    color: var(--text-dark);
    padding: 15px 35px;
    border: 2px solid var(--border);
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}

.secondary-btn:hover {
    border-color: var(--purple);
    color: var(--purple);
}

.trust-indicators {
    display: flex;
    gap: 60px;
    justify-content: center;
}

.indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.indicator-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--purple);
}

.indicator-label {
    font-size: 14px;
    color: var(--text-grey);
}

/* Problem Section */
.problem {
    padding: 80px 0;
}

.problem h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.problem-card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
}

.problem-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.problem-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.problem-card p {
    color: var(--text-grey);
    line-height: 1.7;
}

/* How It Works */
.how-it-works {
    background: var(--white);
    padding: 80px 0;
}

.how-it-works h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 20px;
}

.section-intro {
    text-align: center;
    color: var(--text-grey);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto 50px;
}

.method-cards {
    display: grid;
    gap: 30px;
}

.method-card {
    background: var(--light-grey);
    padding: 40px;
    border-radius: 8px;
    border-left: 4px solid var(--purple);
}

.method-number {
    color: var(--purple);
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 15px;
}

.method-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.method-card p {
    color: var(--text-grey);
    margin-bottom: 20px;
    line-height: 1.7;
}

.tech-detail {
    background: var(--white);
    padding: 15px;
    border-radius: 6px;
    font-size: 14px;
}

.tech-detail strong {
    color: var(--purple);
}

/* Features */
.features {
    padding: 80px 0;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.feature h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.feature p {
    color: var(--text-grey);
    font-size: 15px;
    line-height: 1.6;
}

/* Technical Deep Dive */
.technical-deep-dive {
    background: var(--white);
    padding: 80px 0;
}

.technical-deep-dive h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
}

.dive-content {
    max-width: 800px;
    margin: 0 auto;
}

.dive-step {
    margin-bottom: 40px;
}

.step-header {
    margin-bottom: 15px;
}

.step-label {
    background: var(--purple);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.dive-step p {
    color: var(--text-grey);
    font-size: 16px;
    line-height: 1.8;
    padding-left: 20px;
    border-left: 3px solid var(--light-grey);
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    text-align: center;
}

.cta-section h2 {
    font-size: 40px;
    margin-bottom: 15px;
}

.cta-section > p {
    font-size: 18px;
    color: var(--text-grey);
    margin-bottom: 40px;
}

.signup-form {
    max-width: 500px;
    margin: 0 auto 20px;
    display: flex;
    gap: 10px;
}

.signup-form input {
    flex: 1;
    padding: 15px 20px;
    border: 2px solid var(--border);
    border-radius: 6px;
    font-size: 16px;
    font-family: 'Noto Sans', sans-serif;
}

.signup-form input:focus {
    outline: none;
    border-color: var(--purple);
}

.form-note {
    color: var(--text-grey);
    font-size: 14px;
}

/* Footer */
footer {
    background: var(--white);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-grey);
    margin-top: 15px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    margin-bottom: 15px;
    font-size: 16px;
}

.footer-column a {
    display: block;
    color: var(--text-grey);
    text-decoration: none;
    margin-bottom: 10px;
    font-size: 15px;
    transition: color 0.2s;
}

.footer-column a:hover {
    color: var(--purple);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    color: var(--text-grey);
    font-size: 14px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    nav {
        gap: 15px;
    }
    
    nav a:not(.cta-btn) {
        display: none;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .trust-indicators {
        flex-direction: column;
        gap: 30px;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .signup-form {
        flex-direction: column;
    }
}