/* =========================================================
   AI Practitioner Summit 2026 — Design System v4
   Reference-driven palette: deep black/navy void, electric
   cyan (#00d4ff), cobalt blue (#2b5cff), magenta (#bf2bff).
   Bold tech-futurist look with sharp panels, neon edges,
   and confident scale.
========================================================= */

/* ---- Imports: distinctive fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg:          #05060e;
  --bg-2:        #0a0b1a;
  --bg-3:        #12142b;
  --panel:       rgba(18, 20, 43, .72);
  --cobalt:      #2b5cff;
  --blue:        #2e6bff;
  --cyan:        #00d4ff;
  --cyan-2:      #3dd6ff;
  --magenta:     #bf2bff;
  --violet:      #8a2be2;
  --electric:    #4a00ff;
  --text:        #ffffff;
  --muted:       #8b92b9;
  --line:        rgba(0, 212, 255, .25);

  /* Brand gradients */
  --grad-text:   linear-gradient(90deg, #00d4ff 0%, #2b5cff 50%, #bf2bff 100%);
  --grad-btn:    linear-gradient(90deg, #00d4ff 0%, #2b5cff 45%, #bf2bff 100%);
  --grad-border: linear-gradient(180deg, #00d4ff, #bf2bff);

  --font-display: 'Orbitron', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --radius:       0px;
  --radius-lg:    0px;

  --dur-fast:     220ms;
  --dur-base:     400ms;
  --dur-slow:     700ms;
  --dur-marquee:  24s;

  --ease-out:     cubic-bezier(.22, 1, .36, 1);
  --ease-snap:    cubic-bezier(.16, 1, .3, 1);
  --ease-bounce:  cubic-bezier(.34, 1.8, .64, 1);
}

@media (prefers-reduced-motion: reduce) {
  :root { --dur-fast: 0ms; --dur-base: 0ms; --dur-slow: 0ms; --dur-marquee: 0s; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal, .reveal-stagger > * { opacity: 1 !important; transform: none !important; }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(1400px 900px at 82% -8%, rgba(75, 0, 255, .18), transparent 60%),
    radial-gradient(1000px 800px at -2% 25%, rgba(0, 212, 255, .10), transparent 55%),
    radial-gradient(600px 500px at 100% 80%, rgba(191, 43, 255, .10), transparent 55%),
    linear-gradient(180deg, #02030a 0%, #05060e 40%, #05060e 100%);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: transparent; }
textarea { resize: vertical; }

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}

/* =========================================================
   Background: scan grid + aurora + signal orb
========================================================= */
.starfield {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    /* subtle scan grid */
    linear-gradient(90deg, rgba(0,212,255,.04) 1px, transparent 1px),
    linear-gradient(180deg, rgba(0,212,255,.04) 1px, transparent 1px);
  background-size: 80px 80px;
  animation: scan 18s linear infinite;
}

@keyframes scan {
  from { background-position: 0 0; }
  to   { background-position: 0 80px; }
}

.globe {
  position: absolute;
  top: -220px;
  right: -320px;
  width: 950px;
  height: 950px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, rgba(0,212,255,.16), transparent 58%),
    radial-gradient(circle at 72% 68%, rgba(191,43,255,.14), transparent 58%);
  filter: blur(50px);
  opacity: .55;
  animation: globe-drift 22s ease-in-out infinite alternate;
}

@keyframes globe-drift {
  from { transform: translate3d(0,0,0) scale(1); }
  to   { transform: translate3d(-40px, 24px, 0) scale(1.05); }
}

.globe::before, .globe::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(0,212,255,.14);
}
.globe::before { transform: scale(.82) rotate(20deg); animation: spin 70s linear infinite; }
.globe::after  { transform: scale(.68) rotate(-30deg); border-color: rgba(191,43,255,.14); animation: spin-rev 100s linear infinite reverse; }

@keyframes spin    { to { transform: scale(.82) rotate(380deg); } }
@keyframes spin-rev { to { transform: scale(.68) rotate(-390deg); } }

/* =========================================================
   Reveal system
========================================================= */
.reveal {
  opacity: 0;
  transform: translate3d(0, 32px, 0);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: translate3d(0,0,0); }

.reveal-stagger > * {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
  transition-delay: calc(80ms * var(--i, 0));
}
.reveal-stagger.is-visible > * { opacity: 1; transform: translate3d(0,0,0); }

.no-js .reveal,
.no-js .reveal-stagger > * { opacity: 1; transform: none; }

/* =========================================================
   Header
========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(3,5,17,.82);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
}

.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 1px;
  background: var(--cyan);
  color: var(--bg);
  box-shadow: 0 0 22px rgba(43,210,255,.4);
  transition: transform var(--dur-fast) var(--ease-bounce),
              box-shadow var(--dur-fast) var(--ease-out);
}
.logo:hover .logo-mark {
  transform: rotate(-8deg) scale(1.05);
  box-shadow: 0 0 32px rgba(43,210,255,.6);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
}
.logo-text span { color: var(--cyan); }

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
  position: relative;
  transition: color var(--dur-fast) var(--ease-out);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--dur-fast) var(--ease-out);
}
.nav-links a:hover { color: var(--cyan); }
.nav-links a:hover::after { transform: scaleX(1); }

/* =========================================================
   Buttons
========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  transition: transform var(--dur-fast) var(--ease-bounce),
              box-shadow var(--dur-fast) var(--ease-out);
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--cyan);
  transform: translateX(-101%);
  transition: transform var(--dur-fast) var(--ease-out);
  z-index: -1;
}
.btn-primary {
  background: var(--grad-btn);
  color: #fff;
  box-shadow: 0 0 0 1px var(--cyan), 0 8px 24px rgba(0,212,255,.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--cyan), 0 14px 36px rgba(0,212,255,.5);
}
.btn-primary::before { display: none; }

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255,255,255,.18);
  color: #fff;
}
.btn-ghost::before { background: rgba(255,255,255,.08); }
.btn-ghost:hover { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover::before { transform: translateX(0); }

.btn-lg { padding: 18px 32px; font-size: 13px; }

/* =========================================================
   Hero
========================================================= */
.hero {
  position: relative;
  padding: 80px 0 70px;
  border-bottom: 1px solid var(--line);
  min-height: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
  white-space: normal;
  flex-wrap: wrap;
}
.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: blink 1.6s steps(2, start) infinite;
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }

.hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1;
  font-size: clamp(52px, 6vw, 92px);
  margin: 0 0 28px;
  letter-spacing: -2px;
}

.title-ai {
  color: var(--cyan);
  text-shadow: 0 0 60px rgba(0,212,255,.55), 0 0 100px rgba(0,212,255,.25);
  display: inline-block;
  margin-right: 12px;
  font-size: .55em;
  vertical-align: top;
}
.title-main { display: block; color: #fff; }
.title-gradient {
  display: block;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: 20px;
  color: #b8c2e8;
  max-width: 560px;
  line-height: 1.5;
  margin-bottom: 40px;
}
.hero-sub em {
  font-style: normal;
  color: #fff;
  border-bottom: 2px solid var(--magenta);
  padding-bottom: 2px;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 38px;
  max-width: 640px;
}

.meta-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}
.meta-card:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
}

.meta-icon {
  font-size: 22px;
  line-height: 1;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.meta-value {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Hero side card */
.hero-side { position: relative; }

.side-card {
  position: relative;
  padding: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  box-shadow: 0 0 30px rgba(0, 212, 255, .12);
  transition: transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.side-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 40px rgba(0, 212, 255, .22);
}

.side-card-header {
  padding: 22px 22px 16px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(0,212,255,.08), transparent);
}

.side-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--cyan);
  display: block;
  margin-bottom: 8px;
}

.side-card h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
}
.side-card h3 span { color: var(--muted); }

.benefit-list {
  display: flex;
  flex-direction: column;
  padding: 6px 22px 22px;
}
.benefit-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  transition: transform var(--dur-fast) var(--ease-out);
}
.benefit-list li:last-child { border-bottom: 0; }
.benefit-list li:hover { transform: translateX(6px); }

.b-icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  color: var(--cyan);
  font-size: 16px;
  flex-shrink: 0;
  transition: border-color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
}
.benefit-list li:hover .b-icon {
  border-color: var(--cyan);
  background: rgba(43,210,255,.08);
}

.benefit-list strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
}
.benefit-list p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

/* =========================================================
   Marquee
========================================================= */
.marquee {
  position: relative;
  overflow: hidden;
  padding: 22px 0;
  background: linear-gradient(90deg, rgba(0,212,255,.08), rgba(191,43,255,.08));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.marquee::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 80px;
  background: linear-gradient(90deg, var(--bg-2), transparent);
  z-index: 2;
}
.marquee::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 80px;
  background: linear-gradient(-90deg, var(--bg-2), transparent);
  z-index: 2;
}

.marquee-track {
  display: flex;
  gap: 56px;
  white-space: nowrap;
  width: max-content;
  animation: scroll var(--dur-marquee) linear infinite;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--muted);
}
.marquee-track span { color: var(--muted); }
.marquee-track span:nth-child(3n+2) { color: var(--cyan); }
.marquee-track span:nth-child(3n)    { color: var(--magenta); }

@keyframes scroll {
  from { transform: translate3d(0,0,0); }
  to   { transform: translate3d(-50%,0,0); }
}

/* =========================================================
   Sections
========================================================= */
.section { padding: 120px 0; position: relative; }
.section-head {
  max-width: 860px;
  margin: 0 auto 72px;
  text-align: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid var(--line);
  margin-bottom: 18px;
}
.kicker::before {
  content: "//";
  color: var(--magenta);
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(30px, 3.8vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 18px;
  letter-spacing: -1px;
}

.grad {
  color: var(--cyan);
  text-shadow: 0 0 30px rgba(0,212,255,.25);
  white-space: nowrap;
}

.section-head p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
}

/* =========================================================
   Speakers
========================================================= */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 20px;
}

.speaker-card {
  position: relative;
  padding: 24px;
  text-align: left;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: transform var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.speaker-card:hover {
  transform: translateY(-6px);
  border-color: var(--cyan);
  box-shadow: 0 0 24px rgba(0,212,255,.18);
}
.speaker-card.highlight {
  border-color: var(--magenta);
}
.speaker-card.highlight:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 24px rgba(0,212,255,.18);
}
.speaker-card.tba { opacity: .7; }

/* Emcee */
.speaker-card.speaker-emcee {
  grid-column: span 2;
  border: 1px solid var(--cyan);
  background:
    linear-gradient(135deg, rgba(0,212,255,.08), rgba(191,43,255,.08)),
    var(--panel);
}
.speaker-card.speaker-emcee:hover {
  box-shadow: 0 0 34px rgba(0,212,255,.25);
}
.speaker-card.speaker-emcee .speaker-photo {
  width: 120px;
  height: 120px;
  border: 2px solid var(--cyan);
}
.speaker-card.speaker-emcee h4 {
  font-size: 22px;
  color: var(--cyan);
}

.emcee-badge {
  position: absolute;
  top: 0;
  right: 0;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  background: var(--magenta);
  color: #fff;
  box-shadow: 0 6px 18px rgba(196,76,255,.35);
}

@media (max-width: 600px) {
  .speaker-card.speaker-emcee { grid-column: span 1; }
  .emcee-badge { padding: 4px 10px; font-size: 9px; }
}

.speaker-photo {
  position: relative;
  width: 84px;
  height: 84px;
  margin: 0 0 18px;
  display: grid;
  place-items: center;
  background: var(--bg-2);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform var(--dur-base) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.speaker-card:hover .speaker-photo {
  transform: scale(1.05);
  border-color: var(--cyan);
}

.speaker-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
}
.speaker-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  background: linear-gradient(180deg, transparent 70%, rgba(3,5,17,.6));
  pointer-events: none;
}

.speaker-photo .initials {
  font-family: var(--font-mono);
  font-size: 28px;
  letter-spacing: 1px;
  color: var(--cyan);
  z-index: 1;
}

.speaker-card h4 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
  transition: color var(--dur-fast) var(--ease-out);
}
.speaker-card:hover h4 { color: var(--cyan); }

.speaker-card p {
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
}

/* More speakers */
.more-speakers { padding: 50px 0 100px; border-top: 1px solid var(--line); }
.more-head { text-align: center; margin-bottom: 32px; }
.more-head h3 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 700;
  margin-bottom: 10px;
}
.more-head p { color: var(--muted); font-size: 16px; }

.silhouette-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.silhouette {
  width: 72px;
  height: 72px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  transition: transform var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.silhouette:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
}
.silhouette .initials {
  font-family: var(--font-mono);
  font-size: 26px;
  color: var(--cyan);
  opacity: .6;
}

/* =========================================================
   Why attend
========================================================= */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.why-card {
  position: relative;
  padding: 32px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: transform var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.why-card:hover {
  transform: translateY(-5px);
  border-color: var(--cyan);
}
.why-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--grad-border);
  transition: height var(--dur-base) var(--ease-out);
}
.why-card:hover::before { height: 100%; }

.why-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  font-size: 26px;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  transition: transform var(--dur-base) var(--ease-bounce),
              border-color var(--dur-fast) var(--ease-out);
}
.why-card:hover .why-icon {
  transform: rotate(-8deg) scale(1.08);
  border-color: var(--cyan);
}

.why-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.3;
}
.why-card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

/* =========================================================
   Schedule
========================================================= */
.schedule { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.track {
  position: relative;
  padding: 28px;
  background: var(--bg);
  border: 1px solid var(--line);
  transition: transform var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.track:hover {
  transform: translateY(-5px);
  border-color: var(--cyan);
  box-shadow: 0 0 24px rgba(0,212,255,.12);
}

.track h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin-bottom: 18px;
  color: var(--cyan);
}
.track h4 span {
  display: block;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin-top: 6px;
  letter-spacing: -1px;
}

.track ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.track li {
  position: relative;
  padding-left: 20px;
  color: #b8c2e8;
  font-size: 15px;
  line-height: 1.45;
  transition: color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}
.track li:hover { transform: translateX(4px); color: #fff; }
.track li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--magenta);
  font-weight: 700;
}

/* =========================================================
   Apply to speak
========================================================= */
.apply { padding: 80px 0 120px; }

.apply-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--magenta);
  overflow: hidden;
}

.apply-copy {
  padding: 52px 0 52px 52px;
}
.apply-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.2vw, 50px);
  font-weight: 700;
  line-height: 1.05;
  margin: 14px 0 18px;
  letter-spacing: -1px;
}
.apply-copy p {
  color: #b8c2e8;
  font-size: 17px;
  line-height: 1.55;
}

.apply-form-wrap {
  padding: 52px;
  background: var(--bg-2);
  border-left: 1px solid var(--line);
  height: 100%;
  display: flex;
  align-items: center;
}

.apply-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
}
.apply-form input,
.apply-form button { width: 100%; }

.apply-form input {
  padding: 16px 18px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: #fff;
  font-size: 15px;
  outline: 0;
  font-family: var(--font-body);
  transition: border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}
.apply-form input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(43,210,255,.12);
}
.apply-form input::placeholder { color: #5d6b9c; }

/* =========================================================
   Final CTA
========================================================= */
.cta { padding: 100px 0 120px; }

.cta-inner {
  position: relative;
  text-align: center;
  padding: 70px 40px;
  background: var(--panel);
  border: 1px solid var(--line);
  overflow: hidden;
}
.cta-inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-border);
}
.cta-inner::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(500px 300px at 50% 0%, rgba(43,210,255,.1), transparent 60%);
  pointer-events: none;
}

.cta h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.5vw, 54px);
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.05;
  letter-spacing: -1px;
}
.cta p {
  color: #b8c2e8;
  max-width: 560px;
  margin: 0 auto 32px;
  font-size: 17px;
  line-height: 1.55;
}

.register-form {
  display: flex;
  gap: 10px;
  max-width: 540px;
  margin: 0 auto 18px;
  padding: 6px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  transition: border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}
.register-form:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(43,210,255,.12);
}
.register-form input {
  flex: 1;
  padding: 14px 18px;
  background: transparent;
  border: 0;
  outline: 0;
  color: #fff;
  font-size: 15px;
  font-family: var(--font-body);
}
.register-form input::placeholder { color: #5d6b9c; }

.cta-url {
  display: inline-block;
  margin-top: 20px;
  padding: 10px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--cyan);
  transition: transform var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.cta-url:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

/* =========================================================
   FAQ
========================================================= */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 820px;
  margin: 0 auto;
}

.faq-list details {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.faq-list details:hover { border-color: rgba(43,210,255,.35); }
.faq-list details[open] {
  border-color: var(--cyan);
  background: linear-gradient(180deg, rgba(43,210,255,.04), var(--panel));
}

.faq-list summary {
  list-style: none;
  cursor: pointer;
  padding: 24px 26px;
  font-weight: 600;
  font-size: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: #dfe5ff;
  transition: color var(--dur-fast) var(--ease-out);
  outline: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:hover { color: #fff; }
.faq-list details[open] summary { color: var(--cyan); }

.faq-list summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 400;
  color: var(--cyan);
  transition: transform var(--dur-base) var(--ease-bounce);
}
.faq-list details[open] summary::after {
  transform: rotate(45deg);
}

.faq-list details .answer {
  max-height: 0;
  opacity: 0;
  transform: translate3d(0, -8px, 0);
  padding: 0 26px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
  transition: max-height var(--dur-base) var(--ease-in-out),
              opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              padding var(--dur-base) var(--ease-in-out);
}
.faq-list details[open] .answer {
  max-height: 320px;
  opacity: 1;
  transform: translate3d(0, 0, 0);
  padding: 0 26px 26px;
}
.faq-list details .answer p + p { margin-top: 10px; }

/* =========================================================
   Simple pages
========================================================= */
.page-simple {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-simple .starfield { z-index: -1; }

.simple-hero {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 80px 0;
}

.simple-inner {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 56px 44px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
}

.simple-inner .logo {
  justify-content: center;
  margin-bottom: 28px;
}

.simple-title {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: .9;
  font-size: clamp(52px, 8.5vw, 100px);
  margin-bottom: 22px;
  letter-spacing: -2px;
}
.simple-title .title-ai {
  display: inline;
  color: var(--cyan);
  text-shadow: 0 0 40px rgba(43,210,255,.35);
}
.simple-title .title-main { display: inline; color: #fff; }
.simple-title .title-gradient {
  display: inline;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.simple-sub {
  font-size: 18px;
  color: #b8c2e8;
  max-width: 520px;
  margin: 0 auto 32px;
  line-height: 1.55;
}
.simple-sub strong {
  color: #fff;
  font-weight: 600;
  border-bottom: 2px solid var(--magenta);
  padding-bottom: 2px;
}

.coming-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--cyan);
  margin-bottom: 32px;
}
.coming-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(.85); }
}

.simple-form { margin-bottom: 24px; }
.form-lead {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 16px;
  line-height: 1.55;
}

.simple-form-row {
  display: flex;
  gap: 10px;
  max-width: 540px;
  margin: 0 auto;
  padding: 6px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  transition: border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}
.simple-form-row:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(43,210,255,.12);
}
.simple-form-row input {
  flex: 1;
  padding: 14px 18px;
  background: transparent;
  border: 0;
  outline: 0;
  color: #fff;
  font-size: 15px;
  font-family: var(--font-body);
}
.simple-form-row input::placeholder { color: #5d6b9c; }

.simple-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Apply page form */
.apply-page-form {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 32px 0 28px;
}

.apply-page-form .field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.apply-page-form label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--cyan);
}

.apply-page-form input,
.apply-page-form textarea {
  padding: 14px 16px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: #fff;
  font-size: 15px;
  outline: 0;
  font-family: var(--font-body);
  transition: border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}
.apply-page-form input:focus,
.apply-page-form textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(43,210,255,.12);
}
.apply-page-form input::placeholder,
.apply-page-form textarea::placeholder { color: #5d6b9c; }

/* =========================================================
   Promo video showcase
========================================================= */
.promo {
  background: var(--bg);
  border-top: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.promo::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 15% 20%, rgba(0,212,255,.10), transparent 55%),
    radial-gradient(ellipse at 85% 80%, rgba(191,43,255,.10), transparent 55%);
  pointer-events: none;
  z-index: 0;
}
.promo > .container { position: relative; z-index: 1; }

.promo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: end;
  max-width: 1280px;
  margin: 0 auto;
}

.promo-card {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Desktop default: show landscape, hide portrait */
.promo-card-desktop { display: flex; }
.promo-card-mobile { display: none; }

/* Mobile: show portrait, hide landscape */
@media (max-width: 960px) {
  .promo-card-desktop { display: none; }
  .promo-card-mobile { display: flex; }
}

.promo-frame {
  position: relative;
  background: var(--bg-2);
  border: 1px solid var(--line);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0,212,255,.08),
    0 30px 80px -20px rgba(0,212,255,.25),
    0 12px 40px -10px rgba(191,43,255,.15);
  transition: border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}
.promo-frame:hover {
  border-color: var(--cyan);
  box-shadow:
    0 0 0 1px var(--cyan),
    0 40px 100px -20px rgba(0,212,255,.35),
    0 16px 50px -10px rgba(191,43,255,.25);
  transform: translateY(-4px);
}

.promo-frame video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--bg);
}

.promo-frame-landscape {
  aspect-ratio: 16 / 9;
}

.promo-frame-portrait {
  aspect-ratio: 9 / 16;
  max-height: 720px;
  margin: 0 auto;
  width: 100%;
  max-width: 420px;
}

.promo-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(5,6,14,.78);
  border: 1px solid var(--cyan);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.promo-unmute {
  position: absolute;
  bottom: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: #fff;
  background: rgba(5,6,14,.78);
  border: 1px solid var(--line);
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition:
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}
.promo-unmute:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-1px);
}
.promo-unmute:focus-visible {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,212,255,.25);
}
.promo-unmute svg {
  flex-shrink: 0;
  color: var(--cyan);
}
.promo-unmute-icon-unmute { display: none; }
.promo-unmute.is-unmuted .promo-unmute-icon-mute { display: none; }
.promo-unmute.is-unmuted .promo-unmute-icon-unmute { display: inline-block; }
.promo-unmute.is-unmuted { color: var(--cyan); border-color: var(--cyan); }

.promo-caption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 0 4px;
  flex-wrap: wrap;
}
.promo-format {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}
.promo-use {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--muted);
}

/* =========================================================
   Footer
========================================================= */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 80px 0 32px;
  background: var(--bg-2);
}
.simple-footer { margin-top: auto; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 40px;
}
.footer-grid p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  max-width: 320px;
  margin-top: 16px;
}

.site-footer h5 {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 18px;
  font-weight: 600;
}
.site-footer ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.site-footer ul a {
  color: #b8c2e8;
  font-size: 14px;
  display: inline-block;
  transition: color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}
.site-footer ul a:hover { color: var(--cyan); transform: translateX(4px); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  flex-wrap: wrap;
  gap: 10px;
}

/* =========================================================
   Responsive
========================================================= */

/* Tablet */
@media (max-width: 960px) {
  .container { padding: 0 24px; }

  .nav { height: 70px; }
  .nav-links { display: none; }
  .nav-cta { padding: 10px 18px; font-size: 11px; }

  .hero { padding: 70px 0 50px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-title { font-size: clamp(54px, 10vw, 84px); line-height: .98; }
  .hero-sub { font-size: 18px; }

  .apply-inner { grid-template-columns: 1fr; }
  .apply-copy { padding: 36px; }
  .apply-form-wrap { border-left: 0; border-top: 1px solid var(--line); padding: 36px; }

  .section { padding: 80px 0; }
  .section-head { margin-bottom: 48px; }

  .speakers-grid { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
  .speaker-card.speaker-emcee { grid-column: span 2; }

  .why-grid { grid-template-columns: 1fr 1fr; }

  .track-grid { grid-template-columns: 1fr 1fr; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .simple-inner { padding: 40px 24px; }
}

/* Mobile */
@media (max-width: 640px) {
  .container { padding: 0 18px; }

  .nav { height: 66px; }
  .nav-cta { display: none; }
  .logo-mark { width: 38px; height: 38px; font-size: 16px; }
  .logo-text { font-size: 14px; }

  .hero { padding: 50px 0 40px; }
  .hero-title { font-size: clamp(38px, 11.5vw, 72px); letter-spacing: -1.5px; }
  .hero-sub { font-size: 17px; margin-bottom: 28px; }

  .eyebrow {
    font-size: 10px;
    letter-spacing: 1.2px;
    margin-bottom: 12px;
    flex-wrap: wrap;
    max-width: 100%;
  }
  .eyebrow sup { display: none; }

  .hero-meta { grid-template-columns: 1fr; gap: 12px; margin-bottom: 28px; }
  .meta-card { padding: 14px; }
  .meta-value { font-size: 14px; }

  .hero-cta { flex-direction: column; gap: 12px; }
  .hero-cta .btn { width: 100%; }

  .side-card h3 { font-size: 22px; }
  .benefit-list { padding: 10px 20px 20px; }
  .benefit-list li { padding: 14px 0; }

  .marquee-track { font-size: 10px; gap: 28px; letter-spacing: 1.8px; }

  .section { padding: 64px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head h2 { font-size: clamp(30px, 9vw, 44px); }

  .speakers-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .speaker-card { padding: 14px 12px; }
  .speaker-card.speaker-emcee { grid-column: span 2; padding: 18px 14px; }
  .speaker-photo { width: 52px; height: 52px; }
  .speaker-card.speaker-emcee .speaker-photo { width: 64px; height: 64px; }
  .speaker-photo .initials { font-size: 18px; }
  .speaker-card h4 { font-size: 14px; margin-bottom: 2px; }
  .speaker-card p { font-size: 11px; }
  .emcee-badge { font-size: 8px; padding: 3px 7px; letter-spacing: 1px; }

  .silhouette { width: 56px; height: 56px; }
  .silhouette .initials { font-size: 22px; }

  .why-grid { grid-template-columns: 1fr; gap: 14px; }
  .why-card { padding: 22px; }
  .why-icon { width: 46px; height: 46px; font-size: 22px; }
  .why-card h3 { font-size: 17px; }

  .track-grid { grid-template-columns: 1fr; gap: 14px; }
  .track { padding: 22px; }
  .track h4 span { font-size: 24px; }

  .promo-frame-portrait { max-width: 320px; max-height: 480px; }

  .apply-inner { border-top: 3px solid var(--magenta); }
  .apply-copy { padding: 28px; }
  .apply-form-wrap { padding: 28px; }

  .cta-inner { padding: 44px 24px; }
  .cta h2 { font-size: clamp(28px, 8vw, 40px); }
  .register-form { flex-direction: column; padding: 8px; border-radius: 0; }
  .register-form input { padding: 12px 14px; }

  .faq-list summary { padding: 18px 20px; font-size: 15px; }
  .faq-list details .answer { padding: 0 20px; }
  .faq-list details[open] .answer { padding: 0 20px 20px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; margin-bottom: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }

  .simple-hero { padding: 40px 0; }
  .simple-inner { padding: 32px 20px; }
  .simple-title { font-size: clamp(44px, 14vw, 80px); }
  .simple-sub { font-size: 16px; }

  .simple-form-row { flex-direction: column; padding: 8px; }
  .simple-form-row .btn { width: 100%; }

  .apply-page-form { gap: 16px; margin: 24px 0 20px; }
  .apply-page-form button { width: 100%; }
}

/* Small phones */
@media (max-width: 380px) {
  .hero-title { font-size: clamp(42px, 14vw, 72px); }
  .section-head h2 { font-size: clamp(26px, 8.5vw, 36px); }
  .simple-title { font-size: clamp(38px, 13vw, 64px); }
}

/* =========================================================
   v4 — Modern interactive layer
   Scroll progress, mobile nav, countdown, stats, track tabs,
   tilt cards, magnetic CTA, avatar fallback, back-to-top.
========================================================= */

/* ---- Scroll progress bar ---- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: transparent;
  z-index: 100;
  pointer-events: none;
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--grad-btn);
  box-shadow: 0 0 12px rgba(0,212,255,.6);
  transition: width 80ms linear;
}

/* ---- Mobile nav toggle + menu ---- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  transition: border-color var(--dur-fast) var(--ease-out);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--cyan);
  transition: transform var(--dur-fast) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  position: fixed;
  inset: 0;
  z-index: 49;
  padding: 96px 24px 24px;
  background: rgba(3,5,17,.98);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              visibility 0ms var(--dur-base);
  overflow-y: auto;
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              visibility 0ms;
}
.mobile-menu a {
  display: block;
  padding: 16px 4px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: #dfe5ff;
  border-bottom: 1px solid rgba(0,212,255,.10);
}
.mobile-menu a:last-of-type { border-bottom: 0; }
.mobile-menu a:hover { color: var(--cyan); }
.mobile-menu .btn {
  margin-top: 18px;
  width: 100%;
}

body.menu-open { overflow: hidden; }

/* ---- Countdown ---- */
.countdown {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0 34px;
  padding: 16px 20px;
  max-width: 520px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  position: relative;
}
.countdown::before {
  content: "STARTS IN";
  position: absolute;
  top: -8px;
  left: 14px;
  padding: 0 8px;
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1.6px;
  color: var(--cyan);
}
.cd-unit { text-align: center; flex: 1; }
.cd-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 800;
  color: #fff;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 18px rgba(0,212,255,.25);
}
.cd-lbl {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 6px;
}
.cd-sep {
  font-family: var(--font-display);
  font-size: clamp(20px, 4vw, 28px);
  color: var(--cyan);
  opacity: .6;
}
.cd-done {
  display: none;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--cyan);
}
.countdown.is-live .cd-unit,
.countdown.is-live .cd-sep { display: none; }
.countdown.is-live .cd-done { display: block; }
.countdown.is-live::before { content: "LIVE NOW"; color: var(--magenta); }

/* ---- Stats band ---- */
.stats-band {
  padding: 40px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(0,212,255,.03), transparent);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat { padding: 12px; position: relative; }
.stat:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -10px; top: 20%; bottom: 20%;
  width: 1px;
  background: var(--line);
}
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(30px, 4.5vw, 48px);
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stat-lbl {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.3px;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---- Avatar fallback (intentional gradient ring) ---- */
.speaker-photo.no-photo,
.speaker-card .speaker-photo.no-photo { background: transparent; }
.speaker-photo.no-photo::after { display: none; }
.speaker-photo.no-photo {
  background:
    linear-gradient(135deg, var(--a1, #00d4ff), var(--a2, #2b5cff)) border-box;
  border: 1px solid transparent;
  position: relative;
}
.speaker-photo.no-photo::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 25%, rgba(255,255,255,.18), transparent 55%),
    linear-gradient(135deg, var(--a1, #00d4ff), var(--a2, #2b5cff));
  opacity: .85;
  z-index: 0;
}
.speaker-photo.no-photo .initials {
  position: relative;
  z-index: 2;
  color: #fff;
  font-weight: 700;
  text-shadow: 0 2px 12px rgba(0,0,0,.4);
}
.silhouette.no-photo::before { display: none; }

/* ---- Tilt cards ---- */
.tilt {
  transform-style: preserve-3d;
  transition: transform var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
  will-change: transform;
}
@media (prefers-reduced-motion: no-preference) and (pointer: fine) {
  .tilt.tilting { transition: none; }
}

/* ---- Magnetic CTA ---- */
.magnetic { will-change: transform; }

/* ---- Track tabs (interactive agenda) ---- */
.track-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
  justify-content: center;
}
.track-tab {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 14px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  transition: transform var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
}
.track-tab:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  color: #fff;
}
.track-tab.is-active {
  color: #fff;
  border-color: var(--cyan);
  background: linear-gradient(135deg, rgba(0,212,255,.14), rgba(191,43,255,.10));
  box-shadow: 0 0 24px rgba(0,212,255,.18);
}
.tt-num {
  font-size: 10px;
  letter-spacing: 1.4px;
  color: var(--cyan);
}
.tt-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.2px;
}

.track-panels { position: relative; }
.track-panel {
  display: none;
  gap: 40px;
  padding: 40px;
  background: var(--bg);
  border: 1px solid var(--line);
  align-items: center;
  flex-wrap: wrap;
}
.track-panel.is-active {
  display: flex;
  animation: panel-in var(--dur-base) var(--ease-out);
}
@keyframes panel-in {
  from { opacity: 0; transform: translate3d(0, 16px, 0); }
  to   { opacity: 1; transform: translate3d(0, 0, 0); }
}
.tp-head { flex: 1 1 320px; }
.tp-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
}
.tp-head h3 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
.tp-head p { color: var(--muted); font-size: 16px; max-width: 420px; }
.tp-list { flex: 1 1 300px; display: flex; flex-direction: column; gap: 14px; }
.tp-list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 14px 18px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--magenta);
  color: #dfe5ff;
  font-size: 16px;
  transition: transform var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.tp-list li span { color: var(--magenta); font-weight: 700; }
.tp-list li:hover {
  transform: translateX(6px);
  border-color: var(--cyan);
  border-left-color: var(--cyan);
}
.tp-list li:hover span { color: var(--cyan); }

/* ---- Form success states ---- */
.apply-form .form-success,
.register-form .form-success,
.apply-page-form .form-success {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .6px;
  color: var(--cyan);
  margin-top: 4px;
  padding: 12px 14px;
  background: rgba(0,212,255,.08);
  border: 1px solid var(--line);
  animation: panel-in var(--dur-base) var(--ease-out);
}
.apply-form .form-success,
.apply-page-form .form-success { width: 100%; }
.register-form .form-success {
  width: 100%;
  margin-top: 14px;
  text-align: center;
}
.apply-form.is-submitted button,
.register-form.is-submitted button,
.apply-page-form.is-submitted button,
.simple-form.is-submitted button { opacity: .6; pointer-events: none; }

.simple-form .form-success {
  width: 100%;
  margin-top: 14px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .6px;
  color: var(--cyan);
  padding: 12px 14px;
  background: rgba(0,212,255,.08);
  border: 1px solid var(--line);
  animation: panel-in var(--dur-base) var(--ease-out);
}

/* ---- Back to top ---- */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--cyan);
  z-index: 60;
  opacity: 0;
  transform: translateY(16px) scale(.9);
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-bounce),
              border-color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.to-top.show {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.to-top:hover {
  border-color: var(--cyan);
  background: rgba(0,212,255,.12);
  transform: translateY(-3px) scale(1.04);
}

/* ---- Header shadow on scroll ---- */
.site-header.scrolled { box-shadow: 0 6px 30px rgba(0,0,0,.5); }

/* ---- Responsive: v4 ---- */
@media (max-width: 960px) {
  .nav-toggle { display: flex; }
  .mobile-menu { display: flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .stat:nth-child(2)::after { display: none; }
}
@media (max-width: 640px) {
  .countdown {
    padding: 12px 14px;
    gap: 4px;
    max-width: 100%;
  }
  .cd-num { font-size: clamp(20px, 6.5vw, 26px); }
  .cd-lbl { font-size: 8px; letter-spacing: .8px; }
  .cd-sep { font-size: 18px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 22px; }
  .stat::after { display: none !important; }
  .track-panel { padding: 24px; gap: 24px; }
  .track-tabs { gap: 8px; }
  .track-tab { padding: 12px 14px; }
  .tt-name { font-size: 13px; }
  .tt-num { font-size: 9px; }
  .to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
}
@media (max-width: 380px) {
  .stats-grid { grid-template-columns: 1fr; }
}