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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: 'Segoe UI', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #161616;
}

main {
    flex: 1;
    padding-top: 120px;
}

/* ===== HEADER ===== */
.header-top {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: white;
    border-bottom: none;
    padding: 12px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.header-top .logo-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-top .logo-left img {
    height: 45px;
    width: auto;
}

.header-top .site-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #000091;
    text-decoration: none;
    letter-spacing: 0.5px;
}

.header-top .logo-right img {
    height: 45px;
    width: auto;
}

.header-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    z-index: 999;
    background: #000091;
    display: flex;
    align-items: center;
    padding: 0 30px;
    height: 50px;
}

.header-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.header-nav li {
    margin: 0;
}

.header-nav a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 15px 25px;
    font-size: 15px;
    font-weight: 500;
    transition: background 0.2s;
}

.header-nav a:hover {
    background: rgba(255,255,255,0.15);
}

.header-nav .nav-btn {
    background: white;
    color: #000091;
    border-radius: 4px;
    margin: 8px 5px;
    padding: 10px 20px;
    font-weight: 600;
}

.header-nav .nav-btn:hover {
    background: #e0e0e0;
}

/* Menu hamburger */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-toggle:hover {
    background: rgba(255,255,255,0.15);
    border-radius: 4px;
}

/* ===== HERO SECTION ===== */
.hero {
    background: #f0f4ff;
    color: #161616;
    padding: 80px 30px;
    text-align: center;
    border-bottom: 1px solid #e0e0e0;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: #000091;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== SECTIONS ===== */
.section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 60px 30px;
}

.section-title {
    color: #000091;
    font-size: 2rem;
    margin-bottom: 30px;
    border-left: 4px solid #000091;
    padding-left: 15px;
}

.section-content {
    display: flex;
    gap: 40px;
    align-items: center;
    flex-wrap: wrap;
}

.section-content.reverse {
    flex-direction: row-reverse;
}

.section-text {
    flex: 1;
    min-width: 300px;
    font-size: 1.1rem;
    line-height: 1.8;
}

.section-image {
    flex: 1;
    min-width: 300px;
}

.section-image img {
    width: 100%;
    max-width: 450px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* ===== CARDS ===== */
.card {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}

/* ===== FOOTER ===== */
footer {
    background: #1a1a1a;
    color: white;
    padding: 50px 30px 20px;
    margin-top: auto;
}

.footer-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-col {
    min-width: 180px;
}

.footer-col h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1rem;
}

footer ul {
    list-style: none;
}

footer li {
    margin-bottom: 10px;
}

footer a {
    color: #a0a0a0;
    text-decoration: none;
    transition: color 0.2s;
}

footer a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #333;
    color: #666;
    font-size: 0.9rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .section {
        padding: 50px 25px;
    }
}

@media (max-width: 768px) {
    .header-top {
        padding: 8px 15px;
        height: 60px;
    }
    
    .header-top .logo-left img,
    .header-top .logo-right img {
        height: 35px;
    }
    
    .header-top .site-title {
        font-size: 1.3rem;
    }
    
    .header-nav {
        top: 60px;
        padding: 10px 15px;
        height: auto;
        min-height: 50px;
        flex-direction: column;
        align-items: stretch;
        position: relative;
    }
    
    .mobile-menu-toggle {
        display: block;
        position: absolute;
        right: 15px;
        top: 10px;
        z-index: 10;
    }
    
    .header-nav ul {
        display: none;
        flex-direction: column;
        width: 100%;
        padding: 0;
        margin: 0;
    }
    
    .header-nav ul.active {
        display: flex;
        margin-top: 45px;
    }
    
    .header-nav ul:last-child.active {
        margin-top: 0;
    }
    
    .header-nav li {
        width: 100%;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .header-nav a {
        padding: 15px 20px;
        font-size: 15px;
        width: 100%;
        text-align: center;
    }
    
    .header-nav .nav-btn {
        background: rgba(255,255,255,0.2);
        color: white;
        margin: 10px 15px;
        text-align: center;
        border-radius: 4px;
    }
    
    .header-nav .nav-btn:hover {
        background: rgba(255,255,255,0.3);
    }
    
    main {
        padding-top: 110px;
    }
    
    .hero {
        padding: 50px 20px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section {
        padding: 40px 20px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-content {
        flex-direction: column;
    }
    
    .section-content.reverse {
        flex-direction: column;
    }
    
    .section-text {
        font-size: 1rem;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .header-top {
        padding: 8px 10px;
        height: 55px;
    }
    
    .header-top .logo-left {
        gap: 8px;
    }
    
    .header-top .logo-left img,
    .header-top .logo-right img {
        height: 28px;
    }
    
    .header-top .site-title {
        font-size: 1rem;
    }
    
    .header-nav {
        top: 55px;
        padding: 8px 10px;
    }
    
    .mobile-menu-toggle {
        right: 10px;
        top: 8px;
        font-size: 22px;
    }
    
    .header-nav ul {
        margin-top: 40px;
    }
    
    .header-nav a {
        padding: 12px 8px;
        font-size: 14px;
    }
    
    .header-nav .nav-btn {
        padding: 10px 15px;
        font-size: 14px;
        margin: 8px 0;
    }
    
    main {
        padding-top: 105px;
    }
    
    .hero {
        padding: 40px 15px;
    }
    
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .hero p {
        font-size: 0.95rem;
    }
    
    .section {
        padding: 30px 15px;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
}