/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    color: #1f2937;
    line-height: 1.6;
    background-color: #f9fafb;
}

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

/* Header */
.header {
    background: white;
    padding: 20px 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
    color: #1f2937;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: #6b7280;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
    padding: 8px 0;
    position: relative;
}

.nav-link:hover {
    color: #2196F3;
}

.nav-link.active {
    color: #2196F3;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: #2196F3;
}

.nav-buttons {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn-primary {
    background: #2196F3;
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover {
    background: #1976D2;
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: transparent;
    color: #6b7280;
    border: 1px solid #e5e7eb;
    padding: 10px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #f9fafb;
    border-color: #d1d5db;
    color: #1f2937;
}

.btn-large {
    padding: 16px 40px;
    font-size: 16px;
}

/* Hero Section */
.hero {
    background: white;
    padding: 80px 0 100px;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-text {
    flex: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    color: #111827;
    margin-bottom: 24px;
}

.hero-description {
    font-size: 16px;
    color: #6b7280;
    margin-bottom: 32px;
    line-height: 1.6;
}

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

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-photo .photo-placeholder {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Sections */
.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: #111827;
}

/* Advantages Section */
.advantages {
    padding: 80px 0;
    background: #f9fafb;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.advantages-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.advantage-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    width: 64px;
    height: 64px;
    background: #eff6ff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.advantage-title {
    font-size: 18px;
    font-weight: 600;
    color: #111827;
    line-height: 1.4;
}

.advantage-description {
    font-size: 14px;
    color: #6b7280;
    margin-top: 12px;
    line-height: 1.6;
}

/* How it Works Section */
.how-it-works {
    padding: 80px 0;
    background: white;
}

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

.steps-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.step-card {
    text-align: center;
}

.step-number {
    width: 56px;
    height: 56px;
    background: #2196F3;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step-number-large {
    width: 72px;
    height: 72px;
    font-size: 32px;
}

.step-text {
    font-size: 15px;
    color: #4b5563;
    line-height: 1.5;
}

.step-title {
    font-size: 16px;
    font-weight: 600;
    color: #111827;
    line-height: 1.5;
}

/* Reviews Section */
.reviews {
    padding: 80px 0;
    background: #f9fafb;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 60px;
}

.review-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.review-text {
    font-size: 15px;
    color: #4b5563;
    line-height: 1.6;
    margin-bottom: 24px;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
}

.author-name {
    font-size: 15px;
    font-weight: 600;
    color: #111827;
}

.author-position {
    font-size: 13px;
    color: #6b7280;
}

.trusted-by {
    text-align: center;
}

.trusted-text {
    font-size: 15px;
    color: #6b7280;
    margin-bottom: 24px;
}

.company-logos {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.company-logo {
    background: #374151;
    color: white;
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Profile Features */
.profile-features {
    padding: 80px 0;
    background: white;
}

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

.feature-card {
    text-align: center;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: #eff6ff;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.feature-title {
    font-size: 16px;
    font-weight: 600;
    color: #111827;
    line-height: 1.5;
}

/* CTA Section */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
}

.cta-clients {
    padding: 60px 0;
    background: white;
}

.cta-content {
    text-align: center;
}

.cta-note {
    margin-top: 16px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.cta-clients .cta-note {
    color: #6b7280;
}

/* Footer */
.footer {
    background: white;
    padding: 60px 0 40px;
    border-top: 1px solid #e5e7eb;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 16px;
}

.footer-copyright {
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    color: #6b7280;
    text-decoration: none;
    transition: all 0.2s;
}

.social-link:hover {
    background: #f9fafb;
    border-color: #d1d5db;
    color: #2196F3;
}

.footer-heading {
    font-size: 16px;
    font-weight: 600;
    color: #111827;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: #6b7280;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #2196F3;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 40px;
    }

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

    .advantages-grid-3 {
        grid-template-columns: 1fr;
    }

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

    .steps-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .nav {
        display: none;
    }

    .nav-buttons {
        flex-wrap: wrap;
    }

    .section-title {
        font-size: 28px;
        margin-bottom: 40px;
    }

    .steps-grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero {
        padding: 40px 0 60px;
    }

    .advantages,
    .how-it-works,
    .reviews,
    .profile-features {
        padding: 40px 0;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons button {
        width: 100%;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.advantage-card,
.step-card,
.review-card,
.feature-card {
    animation: fadeIn 0.6s ease-out forwards;
}

.advantage-card:nth-child(1) { animation-delay: 0.1s; }
.advantage-card:nth-child(2) { animation-delay: 0.2s; }
.advantage-card:nth-child(3) { animation-delay: 0.3s; }
.advantage-card:nth-child(4) { animation-delay: 0.4s; }

.step-card:nth-child(1) { animation-delay: 0.1s; }
.step-card:nth-child(2) { animation-delay: 0.2s; }
.step-card:nth-child(3) { animation-delay: 0.3s; }
.step-card:nth-child(4) { animation-delay: 0.4s; }

.review-card:nth-child(1) { animation-delay: 0.1s; }
.review-card:nth-child(2) { animation-delay: 0.2s; }
.review-card:nth-child(3) { animation-delay: 0.3s; }