:root {
  --ink: #07131f;
  --navy: #0b1e30;
  --blue: #48dbfb;
  --cyan: #48dbfb;
  --orange: #ff7a35;
  --cream: #f4f1e9;
  --paper: #fbfbfa;
  --muted: #59728a;
  --line: #dce4ea;
  --white: #fff;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "DM Sans", Arial, sans-serif;
}
button,
a {
  font: inherit;
}
a {
  color: inherit;
  text-decoration: none;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: rgba(7, 19, 31, 0.96);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  color: var(--cyan);
  font: 900 17px/1 "Archivo Black";
}
.brand strong {
  display: block;
  font: 400 14px/1 "Archivo Black";
}
.brand small {
  display: block;
  margin-top: 4px;
  color: #9bb0c0;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.menu-button {
  display: grid;
  gap: 4px;
  width: 42px;
  height: 42px;
  padding: 12px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
}
.menu-button span {
  display: block;
  height: 2px;
  background: #fff;
}
.hero {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  padding: 68px 20px 45px;
  background: var(--ink);
  color: #fff;
}
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(72, 219, 251, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(72, 219, 251, 0.35) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, #000, transparent 92%);
}
.hero-orbit {
  position: absolute;
  width: 310px;
  height: 310px;
  right: -165px;
  top: 48px;
  border: 48px solid rgba(72, 219, 251, 0.68);
  border-radius: 50%;
}
.hero > *:not(.hero-grid, .hero-orbit) {
  position: relative;
  z-index: 1;
}
.eyebrow {
  margin: 0 0 13px;
  color: #48dbfb;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
}
.hero .eyebrow {
  color: var(--cyan);
}
.hero h1 {
  max-width: 770px;
  margin: 0;
  font: 400 clamp(41px, 12vw, 86px) / 0.96 "Archivo Black";
  letter-spacing: -0.055em;
  text-transform: uppercase;
}
.hero h1 em {
  color: var(--cyan);
  font-style: normal;
}
.hero-copy {
  max-width: 500px;
  margin: 24px 0 34px;
  color: #b8cad6;
  font-size: 16px;
  line-height: 1.6;
}
.hero-action {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding: 13px 16px;
  border-left: 3px solid var(--blue);
  background: rgba(255, 255, 255, 0.07);
  font-size: 12px;
  font-weight: 700;
}
.hero-action span {
  color: var(--cyan);
}
.guide-shell {
  max-width: 1080px;
  margin: auto;
  padding: 68px 16px;
}
.section-intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
}
.section-intro h2,
.quick-links h2,
.qr-section h2 {
  margin: 0;
  font: 400 clamp(32px, 7vw, 52px) / 1 "Archivo Black";
  letter-spacing: -0.045em;
}
.prototype-pill {
  padding: 8px 10px;
  background: #e1f2fc;
  color: #48dbfb;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 800;
  text-transform: uppercase;
  white-space: nowrap;
}
.day-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(78px, 1fr));
  gap: 8px;
  overflow: auto;
  padding-bottom: 8px;
}
.day-tab {
  min-width: 82px;
  padding: 15px 10px;
  text-align: left;
  background: #fff;
  border: 1px solid var(--line);
  color: #8a9aa7;
}
.day-tab small,
.day-tab strong,
.day-tab span {
  display: block;
}
.day-tab small {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.day-tab strong {
  margin: 7px 0 5px;
  font: 400 28px/1 "Archivo Black";
}
.day-tab span {
  font-size: 10px;
}
.day-tab.active {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--ink);
  box-shadow: 0 12px 24px rgba(72, 219, 251, 0.2);
}
.filter-row {
  display: flex;
  gap: 8px;
  overflow: auto;
  padding: 20px 0 30px;
  scrollbar-width: none;
}
.filter {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #547087;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
}
.filter.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.schedule-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 0 0 17px;
  border-bottom: 2px solid var(--ink);
}
.schedule-heading small {
  color: var(--blue);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.schedule-heading h3 {
  margin: 6px 0 0;
  font: 400 25px/1 "Archivo Black";
}
.schedule-heading > span {
  color: var(--muted);
  font-size: 10px;
}
.schedule-heading b {
  color: var(--blue);
  font-size: 18px;
}
.timeline {
  padding-top: 24px;
}
.session {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 10px;
  margin-bottom: 16px;
  transition: 0.25s;
}
.session.hidden {
  display: none;
}
.time {
  position: relative;
  padding-top: 8px;
}
.time strong,
.time span {
  display: block;
}
.time strong {
  font: 400 16px/1 "Archivo Black";
}
.time span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 8px;
  font-weight: 800;
}
.time i {
  position: absolute;
  right: -6px;
  top: 12px;
  width: 9px;
  height: 9px;
  background: var(--blue);
  border: 3px solid #d8ebf7;
  border-radius: 50%;
}
.session-card {
  position: relative;
  overflow: hidden;
  padding: 19px 18px 17px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(7, 19, 31, 0.07);
}
.session-card:before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: var(--blue);
}
.session-card.orange:before {
  background: var(--orange);
}
.session-card.cream:before {
  background: #fed330;
}
.session-card.navy {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}
.session-card.navy:before {
  background: var(--cyan);
}
.session-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--blue);
  font-size: 8px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}
.navy .session-meta {
  color: var(--cyan);
}
.session-card h4 {
  margin: 14px 0 8px;
  font: 400 20px/1.08 "Archivo Black";
  letter-spacing: -0.025em;
}
.session-card p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}
.session-card.navy p {
  color: #b7c8d3;
}
.speaker {
  font-weight: 700;
}
.location {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 7px 9px;
  background: #eef6fb;
  color: #48dbfb;
  border-radius: 7px;
  font-size: 10px;
  font-weight: 700;
}
.navy .location {
  background: rgba(255, 255, 255, 0.1);
  color: #d6ecf8;
}
.location.pending {
  background: #fff1e9;
  color: #9d4a1e;
}
.details-button {
  display: flex;
  justify-content: space-between;
  width: 100%;
  margin-top: 17px;
  padding: 12px 0 0;
  border: 0;
  border-top: 1px solid rgba(89, 114, 138, 0.2);
  background: transparent;
  color: inherit;
  font-size: 10px;
  font-weight: 800;
  cursor: pointer;
}
.details-button span {
  color: var(--blue);
}
.navy .details-button span {
  color: var(--cyan);
}
.quick-links {
  padding: 70px 18px;
  background: #eaf4fb;
}
.quick-links > p,
.quick-links > h2,
.quick-grid {
  max-width: 1048px;
  margin-left: auto;
  margin-right: auto;
}
.quick-links > p {
  margin-bottom: 13px;
}
.quick-grid {
  display: grid;
  gap: 9px;
  margin-top: 28px;
}
.quick-grid a {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: center;
  min-height: 74px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid #d5e2ea;
}
.quick-grid span {
  color: #8ca3b4;
  font-size: 10px;
  font-weight: 800;
}
.quick-grid strong {
  font-size: 14px;
}
.quick-grid i {
  color: var(--blue);
  font-style: normal;
  font-size: 20px;
}
.qr-section {
  display: grid;
  gap: 35px;
  padding: 70px 22px;
  background: var(--ink);
  color: #fff;
}
.qr-section > div:first-child {
  max-width: 600px;
}
.qr-section .eyebrow {
  color: var(--cyan);
}
.qr-section p:not(.eyebrow) {
  color: #aebfca;
  line-height: 1.6;
}
.qr-placeholder {
  position: relative;
  display: grid;
  place-items: center;
  width: 190px;
  height: 190px;
  padding: 14px;
  background: #fff;
  border-radius: 16px;
}
.qr-pattern {
  position: absolute;
  inset: 14px;
  opacity: 0.13;
  background: repeating-conic-gradient(var(--ink) 0 25%, transparent 0 50%)
    0/18px 18px;
}
.qr-placeholder span {
  position: relative;
  padding: 10px;
  background: #fff;
  color: var(--ink);
  font: 400 11px/1.25 "Archivo Black";
  text-align: center;
}
footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 22px;
  align-items: center;
  padding: 38px 22px 100px;
  background: #050d15;
  color: #fff;
}
footer p {
  color: #849aa9;
  font-size: 10px;
}
dialog {
  max-width: 560px;
  width: calc(100% - 28px);
  padding: 30px;
  border: 0;
  border-radius: 18px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}
dialog::backdrop {
  background: rgba(7, 19, 31, 0.7);
  backdrop-filter: blur(5px);
}
dialog h2 {
  margin: 0 0 14px;
  font: 400 28px/1.05 "Archivo Black";
}
dialog > p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.6;
}
.dialog-close {
  position: absolute;
  right: 14px;
  top: 12px;
  border: 0;
  background: transparent;
  font-size: 28px;
  cursor: pointer;
}
.dialog-note {
  margin-top: 22px;
  padding: 14px;
  background: #eef6fb;
  color: #48dbfb;
  border-radius: 10px;
  font-size: 11px;
  line-height: 1.5;
}
@media (min-width: 760px) {
  .topbar {
    padding: 0 max(5vw, 40px);
  }
  .hero {
    min-height: 590px;
    padding: 100px max(7vw, 60px) 70px;
  }
  .guide-shell {
    padding: 90px 30px;
  }
  .day-tabs {
    gap: 12px;
  }
  .day-tab {
    padding: 20px;
  }
  .timeline {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .session {
    grid-template-columns: 60px 1fr;
    margin: 0;
  }
  .session-card {
    min-height: 265px;
  }
  .quick-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .qr-section {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 90px max(9vw, 70px);
  }
  footer {
    padding: 45px max(7vw, 60px);
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .session {
    transition: none;
  }
}