:root {
    --bg: #fafafa;
    --surface: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --accent: #2563eb;
    --border: #e5e7eb;

    --radius: 14px;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.06);

    --max-width: 960px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}

img {
    display: block;
    max-width: 100%;
    border-radius: var(--radius);
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(100% - 2rem, var(--max-width));
    margin: 0 auto;
}

section {
    padding: 5rem 0;
}

h1,
h2,
h3 {
    line-height: 1.2;
    margin-top: 0;
}

h1 {
    font-size: clamp(2.75rem, 7vw, 4.5rem);
}

h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

p {
    color: var(--muted);
}

header {
    min-height: 100vh;
    display: grid;
    place-items: center;
    text-align: center;
    padding: 2rem;
}

header p {
    max-width: 650px;
    margin: 1.5rem auto;
}

.button {
    display: inline-block;
    padding: 0.85rem 1.5rem;
    border-radius: 999px;
    background: var(--accent);
    color: white;
    font-weight: 600;
    transition: transform 0.2s, opacity 0.2s;
}

.button:hover {
    transform: translateY(-2px);
    opacity: 0.95;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .grid.two {
        grid-template-columns: repeat(2, 1fr);
    }

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

nav {
    position: sticky;
    top: 0;
    backdrop-filter: blur(10px);
    background: rgba(250, 250, 250, 0.8);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

nav ul {
    display: flex;
    gap: 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

footer {
    text-align: center;
    color: var(--muted);
    padding: 3rem 1rem;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.sponsors {
    margin-top: 3rem;
    padding-top: 2rem;
    padding-right: 2rem;
    padding-left: 2rem;
    border-top: 1px solid #ddd;
    text-align: center;
}

.sponsors p {
    margin-bottom: 2rem;
    font-size: 0.9rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.sponsor-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.sponsor-logos img {
    height: 6em;
    width: auto;
    opacity: 0.85;
    transition: all 0.2s ease;
    border-radius: 1px;
}

.sponsor-logos img:hover {
    opacity: 1;
    transform: scale(1.1);
}

p a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;

    padding: 0.85rem 1.6rem;
    border-radius: 999px;

    background: var(--accent);
    color: white;

    font-weight: 600;
    font-size: 0.95rem;

    border: none;
    cursor: pointer;

    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    transition: all 0.25s ease;
}

p a:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
    filter: brightness(1.05);
}

p a:active {
    transform: translateY(0);
}

p a:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.3);
    outline-offset: 3px;
}