:root {
    --sarf-ink: #263238;
    --sarf-muted: #68757d;
    --sarf-accent: #00416f;
    --sarf-accent-dark: #003354;
    --sarf-soft: #f3f5f4;
    --sarf-border: #d9dfdc;
    --sarf-max-width: 1080px;
}

html {
    scroll-behavior: smooth;
}

body {
    color: var(--sarf-ink);
    background: #fff;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.65;
}

.site-shell {
    max-width: var(--sarf-max-width);
}

.site-header {
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--sarf-border);
}

.navbar-brand {
    color: var(--sarf-ink);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.015em;
}

.navbar-brand:hover,
.navbar-brand:focus,
.navbar .nav-link:hover,
.navbar .nav-link:focus {
    color: var(--sarf-accent);
}

.navbar .nav-link {
    color: var(--sarf-ink);
    font-size: 0.95rem;
    padding-inline: 0.85rem !important;
}

.btn-primary {
    --bs-btn-color: #fff;
    --bs-btn-bg: var(--sarf-accent);
    --bs-btn-border-color: var(--sarf-accent);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: var(--sarf-accent-dark);
    --bs-btn-hover-border-color: var(--sarf-accent-dark);
    --bs-btn-active-bg: var(--sarf-accent-dark);
    --bs-btn-active-border-color: var(--sarf-accent-dark);
    --bs-btn-focus-shadow-rgb: 0, 65, 111;
}

.btn-outline-primary {
    --bs-btn-color: var(--sarf-accent);
    --bs-btn-border-color: var(--sarf-accent);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: var(--sarf-accent);
    --bs-btn-hover-border-color: var(--sarf-accent);
    --bs-btn-active-bg: var(--sarf-accent-dark);
    --bs-btn-active-border-color: var(--sarf-accent-dark);
    --bs-btn-focus-shadow-rgb: 0, 65, 111;
}

.btn-primary,
.btn-outline-primary {
    border-radius: 0;
    font-weight: 600;
}

a {
    color: var(--sarf-accent-dark);
}

a:hover {
    color: var(--sarf-accent);
}

:focus-visible {
    outline: 3px solid rgba(0, 65, 111, 0.45);
    outline-offset: 3px;
}

.skip-link {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1100;
    padding: 0.75rem 1rem;
    transform: translateY(-120%);
    background: #fff;
    color: var(--sarf-ink);
    box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.18);
}

.skip-link:focus {
    transform: translateY(0);
}

.page-intro {
    padding: 5.5rem 0 3.5rem;
}

.page-intro h1 {
    max-width: 48rem;
    font-size: clamp(2.5rem, 6vw, 4.7rem);
    font-weight: 400;
    line-height: 1.05;
    letter-spacing: -0.035em;
}

.page-intro .lead {
    max-width: 48rem;
    margin-top: 1.5rem;
    color: var(--sarf-muted);
    font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.aquarium-hero,
.aquarium-panel {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 20% 25%, rgba(255, 255, 255, 0.3) 0 2%, transparent 2.5%),
        radial-gradient(circle at 72% 48%, rgba(255, 255, 255, 0.2) 0 1.5%, transparent 2%),
        linear-gradient(135deg, rgba(0, 65, 111, 0.92), rgba(0, 51, 84, 0.58)),
        linear-gradient(45deg, #5b7f99, #d4e0e8);
}

.aquarium-hero {
    min-height: 24rem;
}

.aquarium-panel {
    min-height: 20rem;
}

.aquarium-hero::before,
.aquarium-panel::before,
.aquarium-hero::after,
.aquarium-panel::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.13);
}

.aquarium-hero::before,
.aquarium-panel::before {
    width: 18rem;
    height: 6rem;
    right: -3rem;
    bottom: 3rem;
    transform: rotate(-8deg);
}

.aquarium-hero::after,
.aquarium-panel::after {
    width: 12rem;
    height: 4rem;
    left: 8%;
    top: 22%;
    transform: rotate(12deg);
}

.section-block {
    padding: 5rem 0;
}

.section-block + .section-block {
    border-top: 1px solid var(--sarf-border);
}

.section-eyebrow {
    color: var(--sarf-accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.section-title {
    margin-top: 0.45rem;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    line-height: 1.12;
    letter-spacing: -0.025em;
}

.soft-band {
    background: var(--sarf-soft);
}

.editorial-note {
    border-left: 4px solid var(--sarf-accent);
    background: var(--sarf-soft);
}

.rules-copy {
    max-width: 52rem;
}

.site-footer {
    margin-top: auto;
    background: var(--sarf-accent);
    color: rgba(255, 255, 255, 0.82);
}

.site-footer a {
    color: #fff;
}

.site-footer a:hover,
.site-footer a:focus {
    color: #dce9e7;
}

.table {
    --bs-table-striped-bg: var(--sarf-soft);
}

.form-control:focus,
.form-select:focus,
.site-form input:focus,
.site-form select:focus,
.site-form textarea:focus {
    border-color: var(--sarf-accent);
    box-shadow: 0 0 0 0.25rem rgba(0, 65, 111, 0.18);
}

@media (min-width: 992px) {
    .split-copy {
        padding-right: 3rem;
    }
}

@media (max-width: 767.98px) {
    .page-intro {
        padding: 3.5rem 0 2.5rem;
    }

    .section-block {
        padding: 3.5rem 0;
    }

    .aquarium-hero {
        min-height: 17rem;
    }

    .aquarium-panel {
        min-height: 15rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}