:root {
  --bg: #0b0d10;
  --bg-2: #12161b;
  --bg-3: #1a2028;
  --border: #232a33;
  --text: #e7ecf1;
  --muted: #9aa4b2;
  --accent: #f2a23c;
  --accent-2: #4fd1c5;
  --radius: 12px;
  --maxw: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { color: var(--accent); }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,13,16,.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.brand { font-weight: 700; letter-spacing: .2px; font-size: 14px; }
.brand span { color: var(--accent); }
.nav-links { display: flex; gap: 22px; flex-wrap: wrap; }
.nav-links a {
  color: var(--muted); font-size: 13px; font-weight: 500;
  transition: color .15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 22px; cursor: pointer; }
@media (max-width: 760px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-2); flex-direction: column; padding: 18px 24px;
    border-bottom: 1px solid var(--border); gap: 14px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
}

/* SECTIONS */
section { padding: 96px 24px; }
.container { max-width: var(--maxw); margin: 0 auto; }
h1, h2, h3 { line-height: 1.2; margin-top: 0; }
h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 8px; letter-spacing: -0.02em; }
h3 { font-size: 20px; margin: 28px 0 10px; }
.kicker {
  color: var(--accent); font-weight: 600; font-size: 13px;
  letter-spacing: .14em; text-transform: uppercase; margin-bottom: 12px;
}
.section-lead { color: var(--muted); max-width: 720px; margin-bottom: 40px; font-size: 17px; }

/* HERO */
.hero {
  padding: 140px 24px 120px;
  background:
    radial-gradient(800px 500px at 85% -10%, rgba(242,162,60,.14), transparent 60%),
    radial-gradient(700px 500px at 10% 10%, rgba(79,209,197,.10), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.hero .badge {
  display: inline-block; padding: 6px 12px;
  border: 1px solid var(--border); border-radius: 999px;
  font-size: 12px; color: var(--muted); margin-bottom: 24px;
  letter-spacing: .06em; text-transform: uppercase;
}
.hero h1 {
  font-size: clamp(34px, 5.6vw, 58px);
  letter-spacing: -0.025em;
  margin-bottom: 20px;
  max-width: 900px;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.hero .lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--muted); max-width: 680px; }
.hero .meta {
  display: flex; gap: 28px; flex-wrap: wrap; margin-top: 36px;
  font-size: 14px; color: var(--muted);
}
.hero .meta strong { color: var(--text); font-weight: 600; }
.hero .cta {
  margin-top: 40px; display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 10px;
  background: var(--accent); color: #171002;
  font-weight: 600; font-size: 15px;
}
.hero .cta:hover { background: #ffb862; color: #171002; }

/* CARDS / GRIDS */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 820px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.card h3 { margin-top: 0; color: var(--text); }
.card.accent { border-color: rgba(242,162,60,.35); }
.card ul { padding-left: 20px; margin: 10px 0 0; }
.card li { margin-bottom: 8px; color: var(--muted); }
.card li strong { color: var(--text); }

/* AGENDA */
.agenda { display: flex; flex-direction: column; gap: 12px; }
.agenda-item {
  padding: 20px 24px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius);
}
.agenda-item .body h4 { margin: 0 0 6px; font-size: 17px; }
.agenda-item .body p { margin: 0; color: var(--muted); font-size: 14px; }

/* TABLES */
.table-wrap { overflow-x: auto; margin: 18px 0; }
table {
  width: 100%; border-collapse: collapse; font-size: 14.5px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--bg-3); color: var(--text); font-weight: 600; font-size: 13px; letter-spacing: .02em; }
tr:last-child td { border-bottom: 0; }
td { color: var(--muted); }
td strong, td code { color: var(--text); }
code {
  background: var(--bg-3); padding: 2px 6px; border-radius: 4px;
  font-size: .92em; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* DOWNLOADS */
.dl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.dl-card {
  display: flex; flex-direction: column; gap: 10px;
  padding: 22px; background: var(--bg-2);
  border: 1px solid var(--border); border-radius: var(--radius);
  transition: transform .15s, border-color .15s;
}
.dl-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.dl-card .type {
  font-size: 11px; color: var(--accent); font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
}
.dl-card h4 { margin: 0; font-size: 16px; color: var(--text); }
.dl-card p { margin: 0; font-size: 13.5px; color: var(--muted); }
.dl-card .size { font-size: 12px; color: var(--muted); margin-top: auto; }

/* PRESENTER */
.presenter {
  display: grid; grid-template-columns: 1fr; gap: 18px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
}
.presenter .links { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 8px; }
.presenter .links a { font-size: 14px; }

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px; text-align: center;
  color: var(--muted); font-size: 13.5px;
}
footer a { color: var(--muted); }
footer a:hover { color: var(--accent); }

/* REVEAL */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* VIDEO */
.video-wrap {
  margin-top: 32px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.video-wrap video { width: 100%; display: block; height: auto; }
.video-wrap iframe {
  width: 100%; display: block; border: 0;
  aspect-ratio: 16 / 9; height: auto;
}

/* INFOGRAPHIC */
.infographic {
  margin-top: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}
.infographic img { width: 100%; display: block; height: auto; }

/* MINDMAP THUMBNAIL */
.mindmap-card {
  display: block;
  margin-top: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-2);
  overflow: hidden;
  cursor: zoom-in;
  transition: border-color .15s, transform .15s;
}
.mindmap-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.mindmap-card .thumb { background: #fff; padding: 18px; }
.mindmap-card .thumb img {
  width: 100%; display: block; height: auto;
  max-height: 360px; object-fit: cover; object-position: top;
}
.mindmap-card .caption {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px; font-size: 14px; color: var(--muted);
}
.mindmap-card .caption strong { color: var(--text); }

/* LIGHTBOX */
.lightbox {
  display: none;
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,.92);
  padding: 40px;
  overflow: auto;
  cursor: zoom-out;
}
.lightbox.open { display: flex; align-items: flex-start; justify-content: center; }
.lightbox img { max-width: 100%; height: auto; border-radius: 6px; }
.lightbox-close {
  position: fixed; top: 18px; right: 22px;
  background: none; border: 0;
  color: #fff; font-size: 32px; line-height: 1;
  cursor: pointer; z-index: 101;
}

/* UTILITIES */
.divider { height: 1px; background: var(--border); margin: 40px 0; border: 0; }
.muted { color: var(--muted); }
ul.clean { list-style: none; padding: 0; margin: 0; }
ul.clean li { padding: 10px 0; border-bottom: 1px solid var(--border); color: var(--muted); }
ul.clean li:last-child { border-bottom: 0; }
ul.clean li strong { color: var(--text); }