:root {
    --navy: #071b2b;
    --navy-soft: #0d2a3d;
    --blue: #0b74e5;
    --cyan: #28d6c6;
    --lime: #c7ed63;
    --paper: #f3f5f2;
    --white: #ffffff;
    --ink: #102433;
    --muted: #60717d;
    --line: #d7dedc;
    --font-heading: 'Manrope', sans-serif;
    --font-body: 'DM Sans', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

.site-header {
    position: absolute;
    z-index: 20;
    top: 0;
    left: 0;
    width: 100%;
    color: var(--white);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 92px; }
.brand { display: flex; align-items: center; gap: 12px; font: 600 19px var(--font-heading); letter-spacing: -.04em; }
.brand strong { color: var(--cyan); font-weight: 800; }
.brand-mark { position: relative; display: inline-block; width: 36px; height: 36px; transform: rotate(-18deg); }
.brand-mark span { position: absolute; border: 2px solid var(--cyan); border-radius: 50%; }
.brand-mark span:nth-child(1) { inset: 1px 8px; }
.brand-mark span:nth-child(2) { inset: 8px 3px; }
.brand-mark span:nth-child(3) { inset: 14px 0; }
.main-nav { display: flex; align-items: center; gap: 34px; font-size: 14px; font-weight: 600; }
.main-nav a { transition: color .2s ease; }
.main-nav a:hover { color: var(--cyan); }
.nav-cta { padding: 11px 20px; border: 1px solid rgba(255,255,255,.4); border-radius: 100px; }
.menu-toggle { display: none; background: none; border: 0; padding: 8px; }
.menu-toggle span { display: block; width: 24px; height: 2px; margin: 5px; background: white; }

.hero {
    position: relative;
    min-height: 820px;
    padding: 175px 0 0;
    overflow: hidden;
    background: var(--navy);
    color: var(--white);
}
.hero-grid {
    position: absolute;
    inset: 0;
    opacity: .12;
    background-image: linear-gradient(rgba(255,255,255,.18) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.18) 1px, transparent 1px);
    background-size: 78px 78px;
    mask-image: linear-gradient(to bottom, black, transparent 85%);
}
.orb { position: absolute; border-radius: 50%; filter: blur(1px); }
.orb-one { width: 430px; height: 430px; right: 5%; top: 120px; background: radial-gradient(circle at 30% 30%, rgba(40,214,198,.28), transparent 68%); }
.orb-two { width: 620px; height: 620px; left: -340px; bottom: -260px; background: radial-gradient(circle, rgba(11,116,229,.26), transparent 68%); }
.hero-layout { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 86px; align-items: center; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 24px; text-transform: uppercase; letter-spacing: .18em; font-size: 12px; font-weight: 700; }
.eyebrow span { width: 30px; height: 2px; background: var(--cyan); }
h1, h2, h3 { font-family: var(--font-heading); margin-top: 0; }
h1 { margin-bottom: 26px; font-size: clamp(52px, 6vw, 82px); line-height: 1.02; letter-spacing: -.06em; }
h1 em, h2 em { color: var(--cyan); font-style: normal; }
.hero-lead { max-width: 650px; color: #b8c7cf; font-size: 19px; line-height: 1.7; }
.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 22px; padding: 15px 24px; border-radius: 5px; font-weight: 700; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--cyan); color: var(--navy); }
.button-primary:hover { background: var(--lime); }
.text-link { display: inline-flex; gap: 12px; align-items: center; padding-bottom: 3px; border-bottom: 1px solid currentColor; font-weight: 600; }

.event-card { position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,.18); border-radius: 6px; background: rgba(15,47,66,.68); backdrop-filter: blur(12px); box-shadow: 0 28px 90px rgba(0,0,0,.25); }
.map-visual { position: relative; height: 290px; background: linear-gradient(145deg, rgba(11,116,229,.16), rgba(40,214,198,.05)); }
.map-visual svg { width: 100%; height: 100%; }
.contour { fill: none; stroke: rgba(40,214,198,.5); stroke-width: 1.2; }
.c2 { opacity: .62; }.c3 { opacity: .34; }
.locator-ring { fill: rgba(40,214,198,.08); stroke: var(--cyan); stroke-width: 1; animation: pulse 2.4s infinite; transform-origin: 286px 111px; }
.locator { fill: var(--cyan); }
.coordinates { position: absolute; left: 28px; bottom: 22px; color: #8aa6b6; font: 11px/1.7 monospace; letter-spacing: .1em; }
.event-details { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid rgba(255,255,255,.12); }
.event-details div { padding: 22px 25px; }
.event-details div + div { border-left: 1px solid rgba(255,255,255,.12); }
.event-details span { display: block; color: #7f9bab; text-transform: uppercase; font-size: 10px; letter-spacing: .16em; }
.event-details strong { display: block; margin-top: 5px; font-size: 14px; }
.hero-stats { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 105px; border-top: 1px solid rgba(255,255,255,.13); }
.hero-stats div { display: flex; align-items: baseline; gap: 12px; padding: 28px 0; }
.hero-stats strong { font: 700 28px var(--font-heading); }.hero-stats strong span { color: var(--cyan); }
.hero-stats small { color: #78909f; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }

.section { padding: 120px 0; }
.split-layout { display: grid; grid-template-columns: 1fr 3fr; gap: 70px; }
.section-label { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .13em; }
.section-label span { color: var(--blue); }
.section-content h2, .section-heading h2, .program h2, .location h2, .registration h2 { margin-bottom: 30px; font-size: clamp(39px, 4.7vw, 64px); line-height: 1.08; letter-spacing: -.055em; }
.section-content h2 em, .program h2 em { color: var(--blue); }
.large-copy { max-width: 850px; font-size: 22px; line-height: 1.65; }
.about-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 45px; margin-top: 35px; color: var(--muted); }

.topics { background: var(--navy); color: var(--white); }
.section-heading { display: flex; align-items: end; justify-content: space-between; margin-bottom: 55px; }
.section-heading .section-label { align-self: start; padding-top: 12px; }
.section-heading h2 { margin: 0; text-align: right; }
.section-label-light { color: #7e9aa9; }.section-label-light span { color: var(--cyan); }
.topic-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid rgba(255,255,255,.12); }
.topic-card { position: relative; min-height: 350px; padding: 30px; overflow: hidden; }
.topic-card + .topic-card { border-left: 1px solid rgba(255,255,255,.12); }
.topic-card::before { content: ''; position: absolute; inset: auto 0 0; height: 0; background: var(--cyan); transition: height .35s ease; }
.topic-card:hover::before { height: 100%; }
.topic-card > * { position: relative; z-index: 1; }.topic-card:hover { color: var(--navy); }
.topic-number { color: #78909f; font: 11px monospace; }
.topic-icon { position: relative; width: 72px; height: 72px; margin: 65px 0 32px; }
.topic-icon span { position: absolute; inset: 0; border: 1px solid var(--cyan); border-radius: 50%; }
.topic-icon span:nth-child(2) { transform: scale(.7); }.topic-icon span:nth-child(3) { transform: scale(.38); background: rgba(40,214,198,.18); }
.topic-card:hover .topic-icon span { border-color: var(--navy); }
.topic-card h3 { margin-bottom: 12px; font-size: 21px; }
.topic-card p { color: #89a0ad; font-size: 14px; line-height: 1.65; transition: color .2s; }
.topic-card:hover p { color: #183747; }

.program-head { display: flex; justify-content: space-between; align-items: end; margin-bottom: 55px; }
.program-head h2 { margin: 20px 0 0; }.program-head > p { color: var(--muted); text-align: right; }
.schedule { border-top: 1px solid var(--ink); }
.schedule-row { display: grid; grid-template-columns: 90px 130px 1fr 150px; align-items: center; gap: 20px; min-height: 92px; border-bottom: 1px solid var(--line); }
.schedule-row time { font: 700 20px var(--font-heading); }
.schedule-type { justify-self: start; padding: 5px 10px; background: #e2e8e5; border-radius: 100px; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.schedule-row h3 { margin: 0; font-size: 18px; }.schedule-meta { color: var(--muted); font-size: 13px; text-align: right; }

.location { display: grid; grid-template-columns: 1.15fr .85fr; min-height: 600px; background: var(--navy-soft); color: white; }
.location-art { position: relative; overflow: hidden; min-height: 500px; background: #0e394d; }
.location-lines { position: absolute; inset: -15%; transform: rotate(-8deg) scale(1.1); background: repeating-radial-gradient(ellipse at 44% 48%, transparent 0 31px, rgba(40,214,198,.25) 32px 33px); }
.location-art::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 70%, var(--navy-soft)); }
.location-pin { position: absolute; left: 47%; top: 44%; z-index: 2; width: 20px; height: 20px; border: 5px solid var(--cyan); border-radius: 50%; box-shadow: 0 0 0 13px rgba(40,214,198,.15); }
.location-copy { display: flex; flex-direction: column; justify-content: center; padding: 80px clamp(45px, 8vw, 135px); }
.location-copy h2 { margin-top: 25px; }.location-copy p { margin-bottom: 35px; color: #9db0ba; font-size: 17px; }
.text-link-light { align-self: flex-start; color: var(--cyan); }

.registration { text-align: center; background: var(--cyan); }
.registration-inner { display: flex; flex-direction: column; align-items: center; }
.registration .eyebrow span { background: var(--navy); }
.registration h2 em { color: var(--blue); }.registration-inner > p:not(.eyebrow) { max-width: 650px; margin: 0 auto 32px; color: #285363; font-size: 17px; }
.button-dark { background: var(--navy); color: white; }.button-dark:hover { background: var(--blue); }

.site-footer { padding: 75px 0 25px; background: #04131e; color: white; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 60px; padding-bottom: 70px; }
.brand-footer { display: inline-flex; }.footer-grid > div:first-child p { margin-top: 20px; color: #718997; font-size: 14px; }
.footer-links, .footer-contact { display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.footer-links > span, .footer-contact > span { margin-bottom: 9px; color: #68808e; font-size: 10px; text-transform: uppercase; letter-spacing: .15em; }
.footer-contact p { margin: 0; color: #718997; }.footer-links a:hover, .footer-contact a:hover { color: var(--cyan); }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); color: #5f7785; font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@keyframes pulse { 50% { transform: scale(1.35); opacity: .45; } }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .locator-ring { animation: none; }
}

@media (max-width: 900px) {
    .main-nav { display: none; position: absolute; top: 80px; left: 24px; right: 24px; flex-direction: column; align-items: stretch; gap: 0; padding: 15px; background: #0d2a3d; border: 1px solid rgba(255,255,255,.14); border-radius: 8px; }
    .main-nav.is-open { display: flex; }.main-nav a { padding: 12px; }.menu-toggle { display: block; }
    .hero { padding-top: 140px; }.hero-layout { grid-template-columns: 1fr; gap: 50px; }.event-card { max-width: 600px; }
    .hero-stats { margin-top: 65px; }.hero-stats div { flex-direction: column; gap: 0; }
    .split-layout { grid-template-columns: 1fr; gap: 30px; }
    .topic-grid { grid-template-columns: 1fr 1fr; }.topic-card:nth-child(3) { border-left: 0; border-top: 1px solid rgba(255,255,255,.12); }.topic-card:nth-child(4) { border-top: 1px solid rgba(255,255,255,.12); }
    .location { grid-template-columns: 1fr; }.location-copy { min-height: 480px; }
}

@media (max-width: 620px) {
    .container { width: min(100% - 30px, 1180px); }.nav-wrap { height: 76px; }
    .hero { min-height: auto; padding-top: 125px; }.hero-lead { font-size: 17px; }.hero-actions { align-items: flex-start; flex-direction: column; gap: 22px; }
    .event-details { grid-template-columns: 1fr; }.event-details div + div { border-left: 0; border-top: 1px solid rgba(255,255,255,.12); }
    .hero-stats { grid-template-columns: 1fr 1fr; }.hero-stats div:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.13); }
    .section { padding: 85px 0; }.about-columns { grid-template-columns: 1fr; gap: 10px; }
    .section-heading, .program-head { align-items: start; flex-direction: column; }.section-heading h2 { margin-top: 25px; text-align: left; }.program-head > p { text-align: left; }
    .topic-grid { grid-template-columns: 1fr; }.topic-card + .topic-card { border-left: 0; border-top: 1px solid rgba(255,255,255,.12); }.topic-card { min-height: 300px; }.topic-icon { margin-top: 38px; }
    .schedule-row { grid-template-columns: 70px 1fr; gap: 8px 15px; padding: 18px 0; }.schedule-type { justify-self: end; }.schedule-row h3 { grid-column: 1 / -1; }.schedule-meta { grid-column: 1 / -1; text-align: left; }
    .location-art { min-height: 390px; }.location-copy { min-height: 430px; padding: 60px 30px; }
    .footer-grid { grid-template-columns: 1fr; gap: 35px; }.footer-bottom { flex-direction: column; gap: 7px; }
}