:root {
    --bg: #ffffff;
    --panel: #f6f7f9;
    --border: #e2e6ec;
    --text: #0e1726;
    --muted: #5b6573;
    --accent: #1b3a8a;
    --accent-soft: #2756c4;
    --eyebrow: #1b7a4a;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-soft); text-decoration: underline; }
.serif { font-family: 'Source Serif 4', Georgia, serif; }

.container { max-width: 940px; margin: 0 auto; padding: 0 1.5rem; }
.narrow { max-width: 720px; }

header.site {
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.92);
    backdrop-filter: saturate(180%) blur(8px);
    z-index: 10;
}
header.site .container {
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
header.site .brand {
    display: flex; align-items: center; gap: 0.6rem;
    font-weight: 600; color: var(--text);
}
header.site .brand:hover { text-decoration: none; }
header.site .brand img { width: 24px; height: 24px; }
header.site nav a {
    margin-left: 1.1rem; color: var(--muted); font-size: 0.92rem;
}
header.site nav a:hover { color: var(--accent); }
header.site nav a.cta-link { color: var(--accent); font-weight: 600; }
@media (max-width: 720px) {
    header.site nav a:not(.nav-keep) { display: none; }
}

section { padding: 3.5rem 0; border-bottom: 1px solid var(--border); }
.eyebrow {
    color: var(--eyebrow);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}
h1 {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 700;
    font-size: clamp(2.4rem, 6vw, 3.8rem);
    line-height: 1.08;
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
}
h2 {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 700;
    font-size: 1.9rem;
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
}
h3 {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 600;
    font-size: 1.15rem;
    margin-bottom: 0.4rem;
}
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
.lede {
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 1.4rem;
    line-height: 1.4;
    color: var(--text);
    max-width: 30em;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    padding: 0.8rem 1.4rem;
    border-radius: 0.5rem;
    transition: background 0.15s;
}
.btn:hover { background: var(--accent-soft); color: #fff; text-decoration: none; }
.btn-ghost {
    display: inline-block;
    color: var(--accent);
    font-weight: 600;
    padding: 0.8rem 1.4rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
}
.btn-ghost:hover { border-color: var(--accent); text-decoration: none; }
.btn-row { display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: center; }

footer.site {
    padding: 2.5rem 0 3rem;
    color: var(--muted);
    font-size: 0.9rem;
    text-align: center;
}
footer.site p { margin-bottom: 0.4rem; }

/* shared layout components */
.facts {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 2rem;
    margin-bottom: 1.75rem;
    font-size: 1.05rem;
}
.facts div span { color: var(--muted); }
.facts div strong { font-weight: 600; }

.stat {
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 1.3rem;
    color: var(--accent);
    margin: 1.5rem 0 0;
}

.quotes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    margin-top: 1.75rem;
}
blockquote {
    background: var(--panel);
    border-left: 3px solid var(--accent);
    border-radius: 0 0.5rem 0.5rem 0;
    padding: 1rem 1.25rem;
    font-family: 'Source Serif 4', Georgia, serif;
    font-style: italic;
    color: var(--text);
    font-size: 1.02rem;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-top: 1.75rem;
}
.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.4rem;
}
.card p { color: var(--muted); font-size: 0.96rem; margin: 0; }

.schedule { display: grid; gap: 0.75rem; margin-top: 1.5rem; }
.schedule .day {
    display: flex;
    gap: 1.25rem;
    align-items: baseline;
    padding: 1rem 1.25rem;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
}
.schedule .day .when {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 700;
    min-width: 8rem;
    color: var(--accent);
}

.speakers {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 1.25rem 1rem;
    margin-top: 1.75rem;
}
.speaker {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.speaker .headshot {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 0.5rem;
    background: var(--panel);
    margin-bottom: 0.7rem;
    border: 1px solid var(--border);
}
.speaker .name { font-weight: 600; font-size: 0.92rem; }
.speaker .role { color: var(--muted); font-size: 0.8rem; margin-top: 0.15rem; line-height: 1.4; }

.hero-photo, .venue-photo {
    display: block;
    width: 100%;
    max-width: 720px;
    max-height: 420px;
    object-fit: cover;
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    margin: 1.75rem auto 0.5rem;
}
.photo-caption {
    color: var(--muted);
    font-size: 0.88rem;
    font-style: italic;
    margin-top: 0.5rem;
}

.logistics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem 2rem;
    margin-top: 1.5rem;
}
.logistics-grid h3 { color: var(--accent); }
.logistics-grid ul { list-style: none; }
.logistics-grid li { color: var(--muted); margin-bottom: 0.35rem; }