:root {
    color-scheme: dark;
    --ink: #eef2ed;
    --muted: #aab5ae;
    --paper: #09100e;
    --paper-raised: #101916;
    --line: rgba(238, 242, 237, 0.14);
    --accent: #8ef0ba;
    --accent-strong: #42da8a;
    --measure: 760px;
    --wide: 1120px;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-synthesis: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background:
        radial-gradient(circle at 12% -8%, rgba(66, 218, 138, 0.13), transparent 28rem),
        var(--paper);
    color: var(--ink);
    font-size: 17px;
    line-height: 1.7;
    text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }

a { color: inherit; text-decoration-color: rgba(142, 240, 186, 0.56); text-underline-offset: 0.2em; }
a:hover { color: var(--accent); }

.skip-link {
    position: fixed;
    z-index: 20;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.65rem 0.85rem;
    background: var(--accent);
    color: #06100b;
    transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
    position: sticky;
    z-index: 10;
    top: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(9, 16, 14, 0.88);
    backdrop-filter: blur(18px);
}

.site-nav {
    width: min(calc(100% - 2rem), var(--wide));
    min-height: 76px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    font-weight: 750;
    letter-spacing: -0.02em;
    text-decoration: none;
    white-space: nowrap;
}

.brand-mark {
    width: 2.2rem;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    border: 1px solid rgba(142, 240, 186, 0.55);
    border-radius: 50%;
    color: var(--accent);
    font-size: 0.72rem;
    letter-spacing: 0.06em;
}

.nav-links { display: flex; align-items: center; gap: clamp(0.75rem, 2vw, 1.6rem); }
.nav-links a { color: var(--muted); font-size: 0.88rem; font-weight: 650; text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }

main { overflow: hidden; }

.case-study { width: 100%; }

.article-header {
    width: min(calc(100% - 2rem), var(--wide));
    margin: auto;
    padding: clamp(3.5rem, 8vw, 7rem) 0 0;
}

.breadcrumbs {
    display: flex;
    gap: 0.55rem;
    align-items: center;
    margin-bottom: clamp(2rem, 5vw, 4.5rem);
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.eyebrow {
    margin: 0 0 1rem;
    color: var(--accent);
    font-size: 0.76rem;
    font-weight: 780;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

h1 {
    max-width: 980px;
    margin: 0;
    font-size: clamp(2.5rem, 7vw, 5.8rem);
    line-height: 0.98;
    letter-spacing: -0.062em;
    text-wrap: balance;
}

.lede {
    max-width: 780px;
    margin: 2rem 0 0;
    color: #c8d1cb;
    font-size: clamp(1.08rem, 2vw, 1.38rem);
    line-height: 1.55;
}

.article-meta {
    display: flex;
    gap: 0.65rem;
    align-items: center;
    margin-top: 2rem;
    color: var(--muted);
    font-size: 0.88rem;
}

.article-hero {
    margin: clamp(3rem, 7vw, 6rem) 0 0;
    border: 1px solid var(--line);
    background: var(--paper-raised);
    overflow: hidden;
}

.article-hero img {
    width: 100%;
    max-height: 720px;
    object-fit: contain;
}

.article-body {
    width: min(calc(100% - 2rem), var(--measure));
    margin: clamp(4rem, 9vw, 8rem) auto;
}

.article-body h2 {
    margin: 4rem 0 1.15rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
    font-size: clamp(1.45rem, 3vw, 2rem);
    line-height: 1.2;
    letter-spacing: -0.035em;
}

.article-body h2:first-child { margin-top: 0; }
.article-body p, .article-body ul, .article-body ol { color: #c6d0ca; }
.article-body li + li { margin-top: 0.55rem; }
.article-body strong { color: var(--ink); }

.article-body figure {
    width: min(1040px, calc(100vw - 2rem));
    margin: 3rem 50%;
    padding: clamp(0.6rem, 2vw, 1rem);
    transform: translateX(-50%);
    border: 1px solid var(--line);
    background: var(--paper-raised);
}

.article-body figure img { width: 100%; max-height: 760px; object-fit: contain; }
.article-body figcaption {
    padding: 0.9rem 0.2rem 0.15rem;
    color: var(--muted);
    font-size: 0.82rem;
    line-height: 1.5;
}

.article-gallery {
    width: min(1040px, calc(100vw - 2rem));
    margin: 3rem 50%;
    transform: translateX(-50%);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.article-gallery figure { width: auto; margin: 0; transform: none; }
.article-link { color: var(--accent); font-weight: 650; }

.article-footer {
    width: min(calc(100% - 2rem), var(--wide));
    margin: 0 auto clamp(4rem, 8vw, 7rem);
    padding: clamp(2rem, 5vw, 3.5rem);
    border: 1px solid var(--line);
    background: linear-gradient(120deg, rgba(142, 240, 186, 0.1), rgba(16, 25, 22, 0.72));
}

.article-footer a { font-size: clamp(1.3rem, 3vw, 2rem); font-weight: 750; letter-spacing: -0.03em; }

.site-footer {
    width: min(calc(100% - 2rem), var(--wide));
    margin: auto;
    padding: 2rem 0 3rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.82rem;
}

@media (max-width: 760px) {
    body { font-size: 16px; }
    .site-nav { min-height: auto; padding: 0.85rem 0; align-items: flex-start; }
    .brand > span:last-child { display: none; }
    .nav-links { justify-content: flex-end; flex-wrap: wrap; gap: 0.45rem 0.9rem; }
    .nav-links a { font-size: 0.76rem; }
    h1 { letter-spacing: -0.045em; }
    .article-gallery { grid-template-columns: 1fr; }
}

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