/* Base */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #F4F6F9;
    color: #0A1F44;
    line-height: 1.6;
}

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

a {
    color: #0A1F44;
    text-decoration: none;
}

a:hover {
    color: #159e99;
}

/* Layout */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

main {
    padding-top: 90px; /* space for sticky header */
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #ffffff;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 40px;
}

.logo img {
    height: 70px;
}

.main-nav a {
    margin-left: 20px;
    font-weight: 500;
    font-size: 0.95rem;
    padding-bottom: 4px;
    border-bottom: 2px solid transparent;
}

.main-nav a.active {
    border-color: #1CC7C1;
    color: #159e99;
}

/* Hero */
.hero {
    background: #ffffff;
    padding: 60px 0 70px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1.5fr);
    gap: 40px;
    align-items: center;
}

.hero h1 {
    font-size: 2.4rem;
    margin-bottom: 15px;
}

.hero p {
    margin-bottom: 15px;
}

.hero-tagline {
    margin-top: 20px;
    color: #1CC7C1;
    font-weight: 600;
}

.hero-panel {
    background: #F4F6F9;
    border-radius: 12px;
    padding: 25px 25px 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

/* Checklist (fixed ? icons) */
.checklist {
    list-style: none;
    padding: 0;
    margin: 15px 0 0;
}

.checklist li {
    position: relative;
    padding-left: 26px;
    margin-bottom: 10px;
}

.checklist li::before {
    content: "\2713"; /* ? */
    position: absolute;
    left: 0;
    top: 0;
    color: #1CC7C1;
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1;
}

/* Sections */
.section {
    padding: 60px 0;
}

.section-muted {
    background: #E9EEF5;
    text-align: center;
}

.section-title {
    font-size: 1.6rem;
    margin-bottom: 25px;
}

.section-intro {
    max-width: 650px;
    margin: 0 auto 20px;
}

/* Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
}

.card {
    background: #ffffff;
    padding: 22px 22px 26px;
    border-radius: 12px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
}

.card h3 {
    margin-top: 0;
    margin-bottom: 10px;
}

/* Lists */
.list {
    padding-left: 18px;
    margin-top: 10px;
}

.list li {
    margin-bottom: 6px;
}

/* Page banner */
.page-banner {
    background: #0A1F44;
    color: #ffffff;
    padding: 50px 0;
}

.page-banner h1 {
    margin: 0 0 8px;
}

.page-banner p {
    margin: 0;
    opacity: 0.9;
}

/* Narrow content */
.narrow {
    max-width: 750px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 11px 22px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.btn-primary {
    background: #1CC7C1;
    color: #0A1F44;
    border-color: #1CC7C1;
}

.btn-primary:hover {
    background: #17b3ad;
    border-color: #17b3ad;
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: #0A1F44;
    border-color: #0A1F44;
}

.btn-outline:hover {
    background: #0A1F44;
    color: #ffffff;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1.3fr);
    gap: 40px;
    align-items: flex-start;
}

.contact-form {
    background: #ffffff;
    padding: 25px 22px 28px;
    border-radius: 12px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 5px;
    font-weight: 500;
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 9px 10px;
    border-radius: 6px;
    border: 1px solid #D0D7E2;
    font: inherit;
    resize: vertical;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
    outline: none;
    border-color: #1CC7C1;
    box-shadow: 0 0 0 2px rgba(28,199,193,0.15);
}

.contact-info {
    font-size: 0.95rem;
}

/* Alerts */
.alert {
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.alert-success {
    background: #E3F8F3;
    color: #0B6B57;
    border: 1px solid #9ADBC5;
}

.alert-error {
    background: #FDECEC;
    color: #8A1F1F;
    border: 1px solid #F3B1B1;
}

/* Footer */
.site-footer {
    background: #0A1F44;
    color: #ffffff;
    text-align: center;
    padding: 18px 10px;
    font-size: 0.85rem;
    margin-top: 40px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.footer-tagline {
    margin-top: 4px;
    color: #1CC7C1;
}

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

    .site-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 20px;
    }

    .main-nav {
        margin-top: 8px;
    }

    .main-nav a {
        margin-left: 0;
        margin-right: 15px;
    }

    main {
        padding-top: 110px;
    }
}

@media (max-width: 600px) {
    .hero {
        padding: 40px 0 50px;
    }

    .page-banner {
        padding: 35px 0;
    }
}