/* === VARIABLES & GLOBAL STYLES === */
:root {
    --bg-color: #f8f9fa;
    --surface-color: #ffffff;
    --primary-color: #e63946; /* A vibrant red for calls to action */
    --primary-hover: #d62828;
    --text-color: #212529;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --heading-font: 'Noto Sans SC', 'Roboto', sans-serif;
    --body-font: 'Roboto', 'Noto Sans SC', sans-serif;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --border-radius: 8px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--body-font);
    line-height: 1.7;
    background-color: var(--bg-color);
    color: var(--text-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

h1, h2 {
    font-family: var(--heading-font);
    font-weight: 700;
    line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.4rem; color: var(--text-color); }
p { margin-bottom: 1rem; }

/* === HEADER === */
.site-header {
    background-color: var(--surface-color);
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.logo {
    font-family: var(--heading-font);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-color);
}
.logo:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.tagline {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* === INTRO SECTION === */
.intro {
    text-align: center;
    padding: 4rem 1rem;
}

.intro h1 {
    margin-bottom: 1rem;
}

.intro p {
    font-size: 1.15rem;
    max-width: 650px;
    margin: 0 auto;
    color: var(--text-muted);
}

/* === OFFERS GRID === */
.offers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    padding-bottom: 4rem;
}

.offer-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1.5rem 2rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
}

.offer-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.offer-card h2 {
    margin-bottom: 0.75rem;
}

.offer-card p {
    flex-grow: 1;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.btn {
    display: inline-block;
    padding: 0.6rem 1.25rem;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 5px;
    font-weight: 700;
    font-size: 0.9rem;
    text-align: center;
    transition: background-color 0.2s;
    border: none;
    cursor: pointer;
    margin-top: 1rem;
    align-self: flex-start;
}

.btn:hover {
    background-color: var(--primary-hover);
    color: #fff;
    text-decoration: none;
}

/* === FOOTER === */
.site-footer {
    background-color: var(--surface-color);
    color: var(--text-muted);
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.site-footer p {
    margin: 0.25rem 0;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    .intro { padding: 3rem 1rem; }
    .offers-grid {
        grid-template-columns: 1fr;
    }
}