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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    background: #f8f8f8;
    color: #1a1a1a;
    line-height: 1.6;
}

.header {
    background: #ffffff;
    border-bottom: 1px solid #e5e5e5;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.logo-mini {
    width: 32px;
    height: 32px;
    background: #1a1a1a;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-left:hover {
    opacity: 0.8;
}

.brand {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
}

.brand-name {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
}

.auth-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
}

.nav-link.login-btn {
    padding: 8px 16px;
    background: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    text-decoration: none;
    color: #1a1a1a;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
}

.nav-link.login-btn:hover {
    background: #f5f5f5;
    border-color: #1a1a1a;
}

.nav-link.signup-btn {
    padding: 8px 16px;
    background: #1a1a1a;
    border: 1px solid #1a1a1a;
    border-radius: 4px;
    text-decoration: none;
    color: #ffffff;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
}

.nav-link.signup-btn:hover {
    color: #ffffff;
    background: #333333;
    border-color: #333333;
}

.nav-link.signup-btn.active {
    background: #333333;
    border-color: #333333;
    box-shadow: 0 0 0 2px #1a1a1a;
}

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

.nav-link {
    text-decoration: none;
    color: #666666;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    padding-bottom: 4px;
    transition: color 0.2s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #1a1a1a;
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: #1a1a1a;
}

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

.nav-link.active {
    color: #1a1a1a;
}

.nav-link.active::after {
    width: 100%;
}

.hero {
    background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 50%, #e8e8e8 100%);
    padding: 100px 24px;
    text-align: center;
    border-bottom: 1px solid #e5e5e5;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(26, 26, 26, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(26, 26, 26, 0.02) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #1a1a1a;
}

.hero p {
    font-size: 18px;
    color: #666666;
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 28px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: #1a1a1a;
    color: #ffffff;
}

.btn-primary:hover {
    background: #333333;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: #ffffff;
    color: #1a1a1a;
    border: 2px solid #1a1a1a;
}

.btn-secondary:hover {
    background: #1a1a1a;
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 24px;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #1a1a1a;
    letter-spacing: -0.5px;
}

.section-title p {
    font-size: 17px;
    color: #666666;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
    gap: 28px;
    margin-bottom: 40px;
}

.feature-card {
    background: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    padding: 40px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #1a1a1a, transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    border-color: #1a1a1a;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    transform: translateY(-6px);
}

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

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    height: 56px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1a1a1a;
    letter-spacing: -0.3px;
}

.feature-card p {
    font-size: 14px;
    color: #666666;
    line-height: 1.7;
}

.nav-card {
    background: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    padding: 40px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.nav-card:hover {
    border-color: #1a1a1a;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
    transform: translateY(-8px);
}

.nav-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.nav-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1a1a1a;
}

.nav-card p {
    font-size: 14px;
    color: #999999;
    margin-bottom: 24px;
}

.nav-card-btn {
    padding: 10px 20px;
    background: #1a1a1a;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-card-btn:hover {
    background: #333333;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 28px;
    margin: 40px 0;
    padding: 60px 0;
}

.stat-box {
    background: linear-gradient(135deg, #ffffff 0%, #f9f9f9 100%);
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.stat-box:hover {
    border-color: #1a1a1a;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 38px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.stat-label {
    font-size: 12px;
    color: #666666;
    text-transform: uppercase;
    letter-spacing: 0.7px;
    font-weight: 600;
}

.footer {
    background: #1a1a1a;
    color: #ffffff;
    padding: 40px 24px;
    border-top: 1px solid #333333;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 32px;
}

.footer-section h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-link {
    color: #999999;
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 8px;
    display: block;
    transition: color 0.2s;
}

.footer-link:hover {
    color: #ffffff;
}

.footer-bottom {
    border-top: 1px solid #333333;
    padding-top: 24px;
    text-align: center;
    color: #999999;
    font-size: 13px;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    padding: 80px 24px;
    text-align: center;
    color: #ffffff;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #ffffff;
}

.cta-content p {
    font-size: 18px;
    color: #cccccc;
    margin-bottom: 32px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-large {
    padding: 14px 36px;
    font-size: 15px;
}

.btn-secondary-large {
    padding: 14px 36px;
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-secondary-large:hover {
    background: #ffffff;
    color: #1a1a1a;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .hero {
        padding: 60px 24px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }

    .nav-links {
        gap: 12px;
        flex-wrap: wrap;
    }

    .hero-buttons {
        flex-direction: column;
    }

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

    .section-title h2 {
        font-size: 28px;
    }

    .section-title p {
        font-size: 15px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .feature-card {
        padding: 28px;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .cta-section {
        padding: 60px 24px;
    }

    .cta-content h2 {
        font-size: 28px;
    }

    .cta-content p {
        font-size: 16px;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
        padding: 12px 24px;
    }

    .btn-secondary-large {
        width: 100%;
        padding: 12px 24px;
    }
}

@media (max-width: 1024px) {
    .hero h1 { font-size: 38px; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .container { padding: 60px 32px; }
}

@media (max-width: 480px) {
    .hero { padding: 48px 16px; }
    .hero h1 { font-size: 22px; }
    .container { padding: 48px 16px; }
    .stats { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .feature-card { padding: 24px 20px; }
    .stat-number { font-size: 28px; }
    .cta-section { padding: 48px 16px; }
    .cta-content h2 { font-size: 24px; }
}