:root {
    --primary: #0682b4;
    --primary-dark: #046992;
    --accent: #31b7e9;
    --dark: #1d2a3b;
    --gray: #5b6b7b;
    --light: #f4f7fa;
    --white: #ffffff;
    --radius: 12px;
    --shadow: 0 10px 30px rgba(29, 42, 59, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    color: var(--dark);
    line-height: 1.7;
    background: var(--white);
}

a {
    text-decoration: none;
    color: var(--primary);
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header / Navbar */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--white);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--dark);
}

.brand .logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: grid;
    place-items: center;
    color: #fff;
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--dark);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(6, 130, 180, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #0682b4 0%, #31b7e9 100%);
    color: #fff;
    padding: 90px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 18px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.15rem;
    max-width: 640px;
    margin: 0 auto 32px;
    opacity: 0.95;
}

.hero .btn-outline {
    color: #fff;
    border-color: #fff;
}

.hero .btn-outline:hover {
    background: #fff;
    color: var(--primary);
}

/* Sections */
.section {
    padding: 70px 0;
}

.section.alt {
    background: var(--light);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.section-title p {
    color: var(--gray);
    max-width: 560px;
    margin: 0 auto;
}

/* Cards / Grid */
.grid {
    display: grid;
    gap: 26px;
}

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

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

.card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: transform 0.25s, box-shadow 0.25s;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(29, 42, 59, 0.12);
}

.card .icon {
    width: 54px;
    height: 54px;
    border-radius: 12px;
    background: var(--light);
    color: var(--primary);
    display: grid;
    place-items: center;
    font-size: 1.5rem;
    margin-bottom: 18px;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.card p {
    color: var(--gray);
    font-size: 0.97rem;
}

/* Contact info */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
    text-align: center;
}

.contact-item {
    background: var(--white);
    padding: 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.contact-item .icon {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.contact-item h4 {
    margin-bottom: 6px;
}

.contact-item a,
.contact-item span {
    color: var(--gray);
    font-size: 0.97rem;
    word-break: break-word;
}

/* CTA */
.cta {
    background: var(--dark);
    color: #fff;
    text-align: center;
    padding: 64px 0;
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: 14px;
}

.cta p {
    opacity: 0.85;
    margin-bottom: 28px;
}

/* Footer */
.site-footer {
    background: #14202e;
    color: #aebac8;
    padding: 50px 0 24px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 36px;
}

.footer-top h4 {
    color: #fff;
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.footer-top p,
.footer-top li {
    font-size: 0.92rem;
    margin-bottom: 8px;
    list-style: none;
}

.footer-top a {
    color: #aebac8;
}

.footer-top a:hover {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 18px;
    text-align: center;
    font-size: 0.88rem;
}

/* Responsive */
@media (max-width: 900px) {
    .grid-3,
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 760px) {
    .nav-links {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--white);
        padding: 20px;
        gap: 16px;
        box-shadow: var(--shadow);
        display: none;
    }
    .nav-links.open {
        display: flex;
    }
    .nav-toggle {
        display: block;
    }
    .grid-3,
    .grid-2,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .footer-top {
        grid-template-columns: 1fr;
    }
}