/* ==========================================================================
   HERO — skip link, site header/nav, mobile sheet, split-hero opener
   ========================================================================== */

.to-content {
    position: absolute;
    top: -100px;
    left: var(--space-2);
    z-index: 90;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-s);
    font-family: var(--ff-display);
    font-weight: 700;
    color: var(--c-ink);
    background-color: var(--c-lime);
    transition: top 0.2s ease;
}

.to-content:focus {
    top: var(--space-2);
}

/* ---- header --------------------------------------------------------------- */

.site-top {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--header-z);
    border-bottom: 1px solid transparent;
    background-color: rgba(16, 18, 16, 0.86);
    backdrop-filter: blur(0.5rem);
}

.site-top.is-scrolled {
    border-bottom-color: var(--c-line);
    background-color: rgba(16, 18, 16, 0.97);
}

.site-top-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding-block: 1rem;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--ff-display);
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 0.01em;
    color: var(--c-paper);
    text-decoration: none;
}

.site-logo:hover {
    color: var(--c-lime);
}

.site-logo-mark {
    width: 2.1rem;
    height: 2.1rem;
    border-radius: 0.5rem;
}

.site-top-nav {
    display: none;
    align-items: center;
    gap: var(--space-4);
}

.site-top-list {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.site-top-list a {
    font-family: var(--ff-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--c-paper-dim);
    text-decoration: none;
}

.site-top-list a:hover,
.site-top-list a[aria-current="page"] {
    color: var(--c-lime);
}

.nav-trigger {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.32rem;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border: 1px solid var(--c-line-strong);
    border-radius: var(--radius-s);
    background-color: transparent;
    cursor: pointer;
}

.nav-trigger-bar,
.nav-trigger-bar::before,
.nav-trigger-bar::after {
    display: block;
    width: 1.3rem;
    height: 2px;
    background-color: var(--c-paper);
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-trigger-bar::before,
.nav-trigger-bar::after {
    content: "";
    position: relative;
}

.nav-trigger-bar::before {
    top: -0.42rem;
}

.nav-trigger-bar::after {
    top: 0.31rem;
}

.nav-trigger[aria-expanded="true"] .nav-trigger-bar {
    background-color: transparent;
}

.nav-trigger[aria-expanded="true"] .nav-trigger-bar::before {
    top: 0;
    transform: rotate(45deg);
    background-color: var(--c-lime);
}

.nav-trigger[aria-expanded="true"] .nav-trigger-bar::after {
    top: -0.11rem;
    transform: rotate(-45deg);
    background-color: var(--c-lime);
}

@media (min-width: 61rem) {
    .site-top-nav {
        display: flex;
    }

    .nav-trigger {
        display: none;
    }
}

/* ---- mobile sheet (fixed, sits after </header> in DOM) -------------------- */

.site-sheet {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    flex-direction: column;
    padding: var(--space-4) var(--container-pad);
    background-color: var(--c-ink);
}

.site-sheet[hidden] {
    display: none;
}

.site-sheet-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-sheet-close {
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid var(--c-line-strong);
    border-radius: var(--radius-s);
    font-size: 1.5rem;
    line-height: 1;
    color: var(--c-paper);
    background-color: transparent;
    cursor: pointer;
}

.site-sheet-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: var(--space-5);
}

.site-sheet-list a {
    display: block;
    padding-block: 0.5rem;
    font-family: var(--ff-display);
    font-size: clamp(1.8rem, 6vw, 2.5rem);
    font-weight: 700;
    color: var(--c-paper);
    text-decoration: none;
    border-bottom: 1px solid var(--c-line);
}

.site-sheet-list a:hover {
    color: var(--c-lime);
}

.site-sheet-foot {
    margin-top: auto;
    padding-top: var(--space-4);
    font-size: var(--fs-caption);
    color: var(--c-paper-dim);
}

.site-sheet-foot a {
    color: var(--c-paper-dim);
}

/* ---- split-hero opener ------------------------------------------------------ */

.opener {
    position: relative;
    padding-block: var(--space-5) var(--space-6);
    overflow: hidden;
}

.opener::before {
    content: "";
    position: absolute;
    top: -18rem;
    right: -14rem;
    z-index: 0;
    width: 34rem;
    height: 34rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(200, 241, 58, 0.28), transparent 68%);
    pointer-events: none;
}

.opener-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-5);
    align-items: center;
}

.opener-copy {
    max-width: 34rem;
}

.opener-title {
    margin-bottom: var(--space-3);
}

.opener-lead {
    margin-bottom: var(--space-4);
}

.opener-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: var(--space-4);
}

.opener-meta {
    display: grid;
    gap: var(--space-2);
    padding-top: var(--space-3);
    border-top: 1px solid var(--c-line);
}

.opener-meta div {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
}

.opener-meta dt {
    font-family: var(--ff-display);
    font-weight: 700;
    color: var(--c-lime);
}

.opener-meta dd {
    margin: 0;
    color: var(--c-paper-dim);
}

.opener-media {
    position: relative;
    margin: 0;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    border-radius: var(--radius-m);
    box-shadow: var(--c-shadow-lift);
}

.opener-media-img {
    position: absolute;
    top: -6%;
    left: 0;
    width: 100%;
    height: 112%;
    object-fit: cover;
    will-change: transform;
}

.opener-media figcaption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 0.85rem 1.1rem;
    font-family: var(--ff-body);
    font-style: italic;
    font-size: var(--fs-caption);
    color: var(--c-paper);
    background: linear-gradient(0deg, rgba(16, 18, 16, 0.82), transparent);
}

@media (min-width: 61rem) {
    .opener-inner {
        grid-template-columns: minmax(22rem, 34rem) 1fr;
        gap: var(--space-6);
    }
}