:root {
    --overlay: rgba(0, 0, 0, 0.40);
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    background: #000;
}

.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-align: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background: url("/images/site/background2.png") center / cover no-repeat;
    transform: scale(1.02);
    filter: saturate(1.05) contrast(1.05);
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 50% 20%, rgba(0, 0, 0, 0.05) 0%, rgba(0, 0, 0, 0.45) 55%, rgba(0, 0, 0, 0.75) 100%),
        linear-gradient(180deg, rgba(0, 0, 0, 0.20) 0%, rgba(0, 0, 0, 0.70) 100%),
        var(--overlay);
}

.hero__content {
    position: relative;
    z-index: 2;
    width: min(640px, 92vw);
    padding: 56px 16px 96px;
}

.logo {
    width: 126px;
    height: 126px;
    margin: 0 auto 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 16px 60px rgba(0, 0, 0, 0.55);
}

.logo img {
    width: 84px;
    height: 84px;
    object-fit: contain;
}

.menu {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin: 22px 0 28px;
}

.menu a {
    font-size: clamp(18px, 2.2vw, 22px);
    font-weight: 800;
    letter-spacing: 0.01em;
    color: rgba(255, 255, 255, 0.98);
    text-decoration: none;
}

.menu__btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 22px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(0, 0, 0, 0.22);
    box-shadow:
        0 14px 50px rgba(0, 0, 0, 0.55),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transform: translateY(0);
    transition:
        transform 170ms ease,
        border-color 170ms ease,
        background 170ms ease,
        box-shadow 170ms ease;
    text-shadow: 0 10px 28px rgba(0, 0, 0, 0.65);
}

.menu__btn::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255, 60, 60, 0.55), rgba(255, 255, 255, 0.18), rgba(255, 60, 60, 0.30));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.55;
    pointer-events: none;
}

.menu__btn i {
    font-size: 18px;
    opacity: 0.92;
}

.menu__btn:hover {
    transform: translateY(-1px);
    border-color: rgba(255, 255, 255, 0.22);
    background: rgba(0, 0, 0, 0.30);
    box-shadow:
        0 18px 70px rgba(0, 0, 0, 0.70),
        0 0 28px rgba(255, 60, 60, 0.10),
        inset 0 1px 0 rgba(255, 255, 255, 0.10);
}

.menu__btn:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 4px rgba(255, 60, 60, 0.22),
        0 18px 70px rgba(0, 0, 0, 0.70),
        inset 0 1px 0 rgba(255, 255, 255, 0.10);
}

.social {
    display: flex;
    gap: 14px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 10px;
}

.social a {
    width: 40px;
    height: 40px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.92);
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.16);
    text-decoration: none;
    backdrop-filter: blur(6px);
    transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
}

.social a:hover {
    transform: translateY(-2px);
    background: rgba(0, 0, 0, 0.35);
    border-color: rgba(255, 255, 255, 0.24);
}

.hero__wordmark {
    position: absolute;
    left: 50%;
    bottom: clamp(64px, 10vh, 120px);
    transform: translateX(-50%);
    font-size: clamp(76px, 18vw, 240px);
    line-height: 0.85;
    font-weight: 900;
    letter-spacing: 0.06em;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.14);
    text-stroke: 1px rgba(255, 255, 255, 0.14);
    opacity: 0.55;
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
    filter: drop-shadow(0 24px 80px rgba(0, 0, 0, 0.65));
}

.hero__footer {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 22px;
    z-index: 2;
    display: flex;
    justify-content: center;
    padding: 0 16px;
}

.sponsors {
    display: flex;
    gap: 18px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0.9;
}

.sponsors span {
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.78);
}

.sponsors .dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.35);
}

@media (max-width: 480px) {
    .logo {
        width: 112px;
        height: 112px;
    }

    .logo img {
        width: 74px;
        height: 74px;
    }

    .hero__content {
        padding: 44px 16px 104px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .social a {
        transition: none;
    }
}