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

body {
    font-family: 'Inter', sans-serif;
    background: #ffffff;
    color: #0b2b3b;
    line-height: 1.5;
    scroll-behavior: smooth;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

/* light blue theme */
:root {
    --primary: #2c7be5;
    --primary-dark: #1a5bbf;
    --primary-light: #eef4ff;
    --primary-soft: #d4e2fc;
    --text-dark: #0a2540;
    --text-muted: #5f7f9e;
    --border-light: #e9f0f5;
}

/* header */
header {
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
    flex-wrap: wrap;
    gap: 20px;
}

.logo h1 {
    font-size: 1.9rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #1a5bbf 0%, #2c7be5 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.logo span {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--text-muted);
    display: block;
}

nav ul {
    display: flex;
    gap: 28px;
    list-style: none;
    align-items: center;
    flex-wrap: wrap;
}
nav a {
    text-decoration: none;
    font-weight: 500;
    color: var(--text-dark);
    transition: 0.2s;
    font-size: 0.95rem;
}
nav .active {
    color: var(--primary-dark);
}
nav a:hover {
    color: var(--primary);
}
.lang-switch {
    display: flex;
    gap: 8px;
    background: var(--primary-light);
    padding: 6px 14px;
    border-radius: 40px;
}
.lang-switch a {
    font-weight: 600;
    color: #2c3e66;
}
.lang-switch a.active {
    color: var(--primary);
}
.contact-btn {
    background: var(--primary);
    color: white !important;
    padding: 8px 22px;
    border-radius: 40px;
    transition: 0.2s;
}
.contact-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-primary {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 12px 28px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
    padding: 10px 24px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.2s;
}
.btn-outline:hover {
    background: var(--primary);
    color: white;
}
section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-light);
}
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 48px;
    letter-spacing: -0.02em;
    color: var(--text-dark);
    position: relative;
}
.section-sub {
    color: var(--text-muted);
    max-width: 720px;
    margin-bottom: 40px;
    font-size: 1.1rem;
}

footer {
    background: #0b2b3b;
    color: #cbdde9;
    padding: 60px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}
footer a {
    color: #bfd9e8;
    text-decoration: none;
    font-size: 0.85rem;
    display: block;
    margin-bottom: 12px;
}
footer a:hover {
    color: white;
}
.copyright {
    border-top: 1px solid #2a4c62;
    padding-top: 32px;
    font-size: 0.75rem;
    text-align: center;
}
.badge-light {
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 40px;
    padding: 4px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block;
}

@media (max-width: 800px) {
    .container { padding: 0 24px; }
    .header-flex { flex-direction: column; align-items: flex-start; padding-bottom: 15px;}
    .section-title { font-size: 1.9rem; }
}