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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #fff;
    color: #000;
    line-height: 1.6;
}

/* navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e5e5;
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #000;
    text-decoration: none;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    flex: 1;
    justify-content: center;
}

.nav-links a {
    color: #666;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #000;
}

.nav-buttons {
    display: flex;
    gap: 0.75rem;
}

.btn-primary {
    background-color: #000;
    color: #fff;
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #333;
}

.btn-secondary {
    background-color: transparent;
    color: #000;
    padding: 0.5rem 1.25rem;
    border: 2px solid #000;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background-color: #000;
    color: #fff;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* hero section */
.hero {
    margin-top: 80px;
    padding: 6rem 2rem;
    text-align: center;
    background: linear-gradient(180deg, #f9f9f9 0%, #fff 100%);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 1.3rem;
    color: #666;
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* sections */
.section {
    padding: 5rem 2rem;
    display: none;
}

.section.active {
    display: block;
}

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

.section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.section-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.section p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.features {
    margin-top: 2rem;
}

.features h3 {
    margin-bottom: 1rem;
}

/* partners */
.partners {
    padding: 4rem 2rem;
    background-color: #f9f9f9;
    text-align: center;
}

.partners h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #666;
    margin-bottom: 2rem;
}

.partner-logos {
    display: flex;
    align-items: center;
    gap: 3rem;
    overflow: hidden;
    max-width: 100%;
    margin: 0 auto;
}

.partner-logos-scroll {
    display: flex;
    align-items: center;
    gap: 3rem;
    animation: scroll 20s linear infinite;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.partner-logos-scroll img {
    height: 50px;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.partner-logos-scroll img:hover {
    opacity: 1;
}

/* reviews */
.reviews {
    padding: 5rem 2rem;
    background-color: #fff;
}

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

.reviews h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.reviews-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: center;
    margin-bottom: 3rem;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.review-card {
    background-color: #f9f9f9;
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s;
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.stars {
    color: #ffd700;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.review-text {
    font-size: 1.1rem;
    color: #333;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.reviewer-info {
    border-top: 1px solid #e5e5e5;
    padding-top: 1rem;
}

.reviewer-name {
    font-size: 1rem;
    font-weight: 700;
    color: #000;
    margin-bottom: 0.25rem;
}

.reviewer-role {
    font-size: 0.9rem;
    color: #666;
}

/* leadership */
.leadership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.leader-card {
    text-align: center;
    padding: 2rem;
    background-color: #f9f9f9;
    border-radius: 12px;
}

.leader-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background-color: #e5e5e5;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #666;
}

.leader-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.leader-card .title {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.leader-card p {
    font-size: 0.95rem;
    color: #666;
}

/* links */
.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.link-card {
    padding: 1.5rem;
    background-color: #f9f9f9;
    border-radius: 12px;
    text-decoration: none;
    color: #000;
    transition: all 0.3s;
}

.link-card:hover {
    background-color: #000;
    color: #fff;
    transform: translateY(-4px);
}

.link-card h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.link-card p {
    font-size: 0.9rem;
    color: #666;
}

.link-card:hover p {
    color: #ccc;
}

/* contact */
#contact h3 {
    margin-left: 0;
    margin-top: 3rem;
}

#contact a {
    color: #000;
    text-decoration: none;
}

/* footer */
footer {
    background-color: #000;
    color: #fff;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

footer p {
    color: #999;
}

/* mobile */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .nav-buttons {
        display: none;
    }
    
    .section h2 {
        font-size: 2rem;
    }
}