:root {
    --bg: #0b0c10;
    --bg-soft: #0f1117;
    --text: #e7ebf0;
    --muted: #9aa4b2;
    --accent: #96f9a0;
    --accent-2: #b9d9ff;
    --card: #131621;
    --border: #24293a;
    --shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #ffffff;
        --bg-soft: #f6f8fb;
        --text: #101828;
        --muted: #667085;
        --accent: #96f9a0;
        --accent-2: #b9d9ff;
        --card: #ffffff;
        --border: #e5e7eb;
        --shadow: 0 10px 30px rgba(16, 24, 40, .08);
    }
}

* {
    box-sizing: border-box;
}

section[id] {
    scroll-margin-top: 120px;
    /* previously 100px in JS offset, now more room */
}

html,
body {
    height: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
    color: var(--text);
    background: radial-gradient(1200px 600px at 70% -10%, #96f9a0, transparent 55%),
        radial-gradient(1000px 500px at 0% 0%, #b9d9ff, transparent 50%),
        var(--bg);
}

/* Hero */
.hero {
    padding: 64px 20px 24px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, color-mix(in oklab, var(--bg) 92%, transparent) 0%, transparent 100%);
}

.hero-inner {
    max-width: 900px;
    margin: 0 auto;
    margin-top: 30px;
    display: flex;
    flex-direction: column;
}

.hero-inner>h1 {
    margin-top: 50px;
}

.date {
    color: grey;
    font-size: 14px;
    margin-top: 20px;
    font-weight: 500;
}

.eyebrow {
    color: var(--accent);
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    font-size: 14px;
}

h1 {
    font-size: clamp(36px, 6vw, 56px);
    line-height: 1.05;
    margin: 10px 0 16px;
    letter-spacing: -.02em;
}

.lead {
    color: var(--muted);
    font-size: clamp(16px, 2.2vw, 18px);
    max-width: 60ch;
}

/* Layout */
.wrap {
    max-width: 1100px;
    margin: 0 auto;
    padding: 26px 20px 96px;
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 24px;
}

@media (max-width: 980px) {
    .wrap {
        grid-template-columns: 1fr;
    }

    .nav {
        position: static;
    }
}

/* TOC */
.toc {
    top: 72px;
    align-self: start;
}

.toc-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px;
    box-shadow: var(--shadow);
}

.toc h4 {
    margin: 4px 8px 8px;
    font-size: 14px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .12em;
}

.toc a {
    display: block;
    padding: 10px 10px;
    border-radius: 10px;
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}

.toc a:hover {
    background: color-mix(in oklab, var(--card) 80%, var(--bg-soft));
}

.toc a.active {
    outline: 2px solid color-mix(in oklab, var(--accent) 60%, white 20%);
}

/* Article */
article {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.article-inner {
    padding: 28px 26px;
}

article h2 {
    font-size: clamp(24px, 3vw, 34px);
    margin: 26px 0 12px;
    letter-spacing: -.01em;
}

article p {
    color: var(--text);
    line-height: 1.7;
    font-size: 16.5px;
}

.muted {
    color: var(--muted);
}

.stat {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 16px;
    border: 1px dashed var(--border);
    border-radius: 12px;
    background: color-mix(in oklab, var(--card) 80%, var(--bg-soft));
    margin: 16px 0;
}

.stat .num {
    font-weight: 800;
    font-size: 28px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

figure {
    margin: 22px 0;
    background: color-mix(in oklab, var(--card) 86%, var(--bg-soft));
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
}

figure img {
    display: block;
    width: 100%;
    height: auto;
}

figure figcaption {
    padding: 10px 12px;
    color: var(--muted);
    font-size: 13px;
    border-top: 1px solid var(--border);
}

.callout {
    border-left: 4px solid var(--accent-2);
    padding: 12px 16px;
    background: color-mix(in oklab, var(--card) 86%, var(--bg-soft));
    border-radius: 10px;
    margin: 16px 0;
}

blockquote {
    margin: 0;
    font-weight: 600;
}

ul {
    margin: 10px 0 16px 0;
    padding-left: 18px;
}

li {
    margin: 6px 0;
}

.footer-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-top: 1px solid var(--border);
    background: linear-gradient(90deg, color-mix(in oklab, var(--card) 90%, var(--accent) 6%), color-mix(in oklab, var(--card) 90%, var(--accent-2) 6%));
}

.footer-cta h3 {
    margin: 0;
    font-size: clamp(18px, 3vw, 24px);
}

.kicker {
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.divider {
    height: 1px;
    background: var(--border);
    margin: 22px 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.cta-btn {
    display: inline-block;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);
    color: #fff;
    font-weight: 600;
    font-size: 1.15rem;
    padding: 0.85em 2.2em;
    border: none;
    border-radius: 2em;
    box-shadow: 0 2px 16px 0 rgba(30, 144, 255, 0.15);
    transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
    text-decoration: none;
    letter-spacing: 0.02em;
}

.cta-btn:hover,
.cta-btn:focus {
    background: linear-gradient(90deg, var(--accent-2) 0%, var(--accent) 100%);
    box-shadow: 0 4px 24px 0 rgba(30, 144, 255, 0.22);
    transform: translateY(-2px) scale(1.03);
    color: #fff;
    text-decoration: none;
}

.others {
    text-align: center;
    align-self: center;
    justify-content: center;
    margin-top: 50px;
    font-size: 34px;
    color: rgb(59, 59, 59);
    text-decoration: underline;
}