:root {
    --derby-bg: #070d16;
    --derby-panel: rgba(10, 18, 31, 0.95);
    --derby-line: rgba(245, 158, 11, 0.22);
    --derby-line-strong: rgba(245, 158, 11, 0.35);
    --derby-text: #f8fbff;
    --derby-muted: #9aabc0;
    --derby-accent: #f59e0b;
    --derby-accent-2: #facc15;
    --derby-radius: 24px;
    --derby-shadow: 0 26px 90px rgba(0, 0, 0, 0.35);
}

body.derby-page {
    min-height: 100vh;
    background:
        radial-gradient(circle at top right, rgba(245, 158, 11, 0.12), transparent 30%),
        linear-gradient(180deg, #050a12 0%, #09111d 35%, #050a12 100%);
    color: var(--derby-text);
    font-family: 'Inter', 'Noto Sans KR', system-ui, sans-serif;
}

.derby-page a {
    text-decoration: none;
}

.derby-page .container-xxl {
    max-width: 1440px;
}

.derby-nav {
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: blur(18px);
    background: rgba(7, 13, 22, 0.86);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.derby-nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 20px;
}

.derby-brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    color: var(--derby-text);
}

.derby-brand:hover {
    color: var(--derby-text);
    text-decoration: none;
}

.derby-brand__mark {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #0f172a;
    background: linear-gradient(135deg, var(--derby-accent), var(--derby-accent-2));
    box-shadow: 0 18px 40px rgba(245, 158, 11, 0.26);
}

.derby-brand__eyebrow,
.derby-kicker {
    display: inline-block;
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 0.8rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: #ffd36e;
}

.derby-brand strong {
    display: block;
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
}

.derby-nav__actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    flex-wrap: wrap;
}

.derby-action {
    min-height: 44px;
    padding: 0 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.09);
    background: rgba(22, 30, 47, 0.82);
    color: var(--derby-text);
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 0.94rem;
    transition: transform 0.18s ease, border-color 0.18s ease;
}

.derby-action:hover {
    color: var(--derby-text);
    text-decoration: none;
    transform: translateY(-1px);
    border-color: rgba(245, 158, 11, 0.34);
}

.derby-action--ghost {
    background: transparent;
}

.derby-action--icon {
    width: 46px;
    justify-content: center;
    padding: 0;
}

.derby-shell {
    padding: 20px 0 56px;
}

.derby-panel {
    position: relative;
    border-radius: var(--derby-radius);
    border: 1px solid var(--derby-line);
    background:
        linear-gradient(180deg, rgba(13, 21, 35, 0.96), rgba(9, 15, 27, 0.94)),
        linear-gradient(90deg, rgba(245, 158, 11, 0.08), transparent 42%);
    box-shadow: var(--derby-shadow);
    overflow: hidden;
}

.derby-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 38px 38px;
    mask-image: linear-gradient(180deg, rgba(0,0,0,0.5), transparent 84%);
}

.derby-stage__header,
.derby-frame-wrap {
    position: relative;
    z-index: 1;
}

.derby-stage {
    padding: 22px;
}

.derby-stage__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

.derby-stage__header h2 {
    margin: 10px 0 0;
    font-size: 1.6rem;
    letter-spacing: -0.04em;
}

.derby-stage__meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.derby-badge {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid rgba(245, 158, 11, 0.24);
    color: #ffd36e;
    background: rgba(41, 28, 8, 0.54);
}

.derby-stage__hint {
    color: var(--derby-muted);
    font-size: 0.9rem;
}

.derby-frame-wrap {
    border-radius: 22px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: #04070c;
    min-height: 78vh;
}

.derby-frame {
    display: block;
    width: 100%;
    height: 78vh;
    border: 0;
    background: #04070c;
}

@media (max-width: 991px) {
    .derby-stage__header {
        flex-direction: column;
    }

    .derby-stage__meta {
        align-items: flex-start;
    }

    .derby-frame-wrap,
    .derby-frame {
        min-height: 68vh;
        height: 68vh;
    }
}

@media (max-width: 767px) {
    .derby-nav__inner {
        padding: 14px 16px;
        align-items: flex-start;
        flex-direction: column;
    }

    .derby-nav__actions {
        width: 100%;
        justify-content: flex-start;
    }

    .derby-shell {
        padding-top: 18px;
    }

    .derby-stage {
        padding: 20px 18px;
    }

    .derby-frame-wrap,
    .derby-frame {
        min-height: 58vh;
        height: 58vh;
    }
}