:root {
  --bg: #050505;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-strong: rgba(255, 255, 255, 0.13);
  --ink: #f7f7f7;
  --muted: #a6a6aa;
  --line: rgba(255, 255, 255, 0.12);
  --white: #ffffff;
  --black: #050505;
  --soft: #f3f3f3;
  --radius: 32px;
  --shadow: 0 34px 100px rgba(0, 0, 0, 0.42);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(145deg, #111 0%, #050505 42%, #000 100%);
}

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

button {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  width: min(1180px, calc(100% - 32px));
  margin: 14px auto 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(5, 5, 5, 0.72);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(24px) saturate(1.35);
}

.brand,
.site-header nav,
.hero-actions,
.student-card,
.phone-top,
footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  padding-left: 6px;
  font-weight: 900;
}

.brand-mark {
  display: grid;
  width: 46px;
  height: 38px;
  place-items: center;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.site-header nav {
  justify-content: center;
  gap: 8px;
}

.site-header nav a,
.header-cta,
.primary,
.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: max-content;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 850;
  white-space: nowrap;
}

.site-header nav a {
  color: var(--muted);
}

.header-cta,
.primary {
  background: linear-gradient(135deg, #7dd3fc 0%, #5eead4 52%, #0e7490 100%);
  color: #050505;
  box-shadow: 0 12px 34px rgba(94, 234, 212, 0.2);
}

.secondary {
  border: 1px solid rgba(94, 234, 212, 0.32);
  background: rgba(14, 116, 144, 0.16);
  color: #9debf2;
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.75fr);
  gap: 72px;
  align-items: center;
  min-height: calc(100vh - 86px);
  padding: 76px 0 68px;
}

.hero-copy,
.section-intro,
.timeline,
.faq {
  display: grid;
  gap: 18px;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  max-width: 820px;
  font-size: 6.7rem;
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  font-size: 3.55rem;
  line-height: 0.98;
  letter-spacing: 0;
}

h3 {
  font-size: 1.45rem;
  line-height: 1.1;
}

.lead,
.section-intro p,
.panel p,
.timeline p,
.audience-grid p,
.faq p {
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.65;
}

.lead {
  max-width: 680px;
  font-size: 1.2rem;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.phone-preview {
  position: relative;
  display: grid;
  gap: 14px;
  width: min(390px, 100%);
  min-height: 660px;
  justify-self: end;
  align-content: start;
  padding: 24px 22px 34px;
  border: 1px solid var(--line);
  border-radius: 44px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.035)),
    #090909;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.phone-preview::before {
  content: "";
  position: absolute;
  inset: 12px 50% auto;
  width: 96px;
  height: 24px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: #000;
}

.phone-top {
  justify-content: space-between;
  padding: 4px 6px 18px;
  color: var(--soft);
  font-size: 0.82rem;
  font-weight: 900;
}

.phone-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.signal {
  display: inline-block;
  width: 18px;
  height: 12px;
  background: linear-gradient(90deg, #fff 0 24%, transparent 24% 34%, #fff 34% 58%, transparent 58% 68%, #fff 68% 100%);
  clip-path: polygon(0 100%, 0 58%, 24% 58%, 24% 100%, 34% 100%, 34% 34%, 58% 34%, 58% 100%, 68% 100%, 68% 0, 100% 0, 100% 100%);
}

.wifi {
  display: inline-block;
  width: 17px;
  height: 12px;
  border: 3px solid #fff;
  border-right-color: transparent;
  border-bottom-color: transparent;
  border-left-color: transparent;
  border-radius: 50% 50% 0 0;
  position: relative;
}

.wifi::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2px;
  width: 5px;
  height: 5px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: #fff;
}

.battery {
  display: inline-block;
  position: relative;
  width: 25px;
  height: 12px;
  border: 2px solid #fff;
  border-radius: 4px;
}

.battery::before {
  content: "";
  position: absolute;
  top: 2px;
  right: -5px;
  width: 2px;
  height: 6px;
  border-radius: 0 2px 2px 0;
  background: #fff;
}

.battery::after {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: 2px;
  background: #fff;
}

.preview-card,
.student-card,
.preview-feed {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(1.25);
}

.preview-card {
  display: grid;
  gap: 6px;
  min-height: 122px;
  padding: 18px;
}

.preview-card.large {
  grid-template-columns: 48px 1fr;
  align-items: center;
}

.preview-card.dark {
  background: #fff;
  color: #050505;
}

.mini-logo,
.avatar {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  color: #050505;
  font-weight: 950;
}

.mini-logo img {
  width: 34px;
  height: 28px;
  object-fit: contain;
}

.preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.preview-card strong,
.student-card strong {
  font-size: 1.28rem;
}

.preview-card small,
.student-card small {
  color: var(--muted);
}

.preview-card.dark small {
  color: #5c5c62;
}

.student-card {
  gap: 12px;
  padding: 14px;
}

.student-card > div {
  min-width: 0;
  flex: 1;
}

.student-card button {
  min-height: 38px;
  padding: 0 14px;
  border: 0;
  border-radius: 999px;
  background: #fff;
  color: #050505;
  font-weight: 900;
}

.preview-feed {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: center;
  padding: 14px;
}

.preview-feed .feed-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  color: #050505;
}

.feed-icon svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.preview-feed strong,
.preview-feed small {
  display: block;
}

.preview-feed small {
  margin-top: 3px;
  color: var(--muted);
}

.phone-home-indicator {
  position: absolute;
  left: 50%;
  bottom: 20px;
  width: 118px;
  height: 5px;
  border-radius: 999px;
  background: #fff;
  transform: translateX(-50%);
}

.feature-strip,
.overview-grid,
.process-section,
.audience-section,
.cta-panel,
.faq {
  margin-bottom: 92px;
}

.feature-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-strip article {
  display: grid;
  gap: 22px;
  min-height: 160px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
}

.feature-strip span,
.timeline span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 900;
}

.feature-strip strong {
  align-self: end;
  font-size: 1.15rem;
}

.overview-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  grid-template-areas:
    "map connect"
    "map audience";
  gap: 18px;
}

.panel {
  display: grid;
  align-content: start;
  gap: 16px;
  padding: 28px;
  border-radius: var(--radius);
}

.panel-map {
  grid-area: map;
  min-height: 560px;
}

.panel-connect {
  grid-area: connect;
  min-height: 250px;
}

.panel-outline {
  grid-area: audience;
  min-height: 292px;
  border: 1px solid var(--line);
}

.panel-light {
  background: #fff;
  color: #050505;
}

.panel-light .eyebrow,
.panel-light p {
  color: #626267;
}

.panel-dark {
  background: #0d0d0e;
  box-shadow: inset 0 0 0 1px var(--line);
}

.panel-outline {
  background: var(--panel);
  align-content: stretch;
}

.big-number {
  font-size: 5rem;
  font-weight: 950;
  line-height: 0.9;
}

.route {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: auto;
}

.route article {
  display: grid;
  gap: 7px;
  min-height: 128px;
  padding: 16px;
  border-radius: 24px;
  background: #f0f0f0;
  color: #050505;
}

.route small {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 999px;
  background: #050505;
  color: #fff;
  font-weight: 900;
}

.route strong {
  font-size: 1.1rem;
}

.route span {
  color: #626267;
  font-size: 0.92rem;
  font-weight: 750;
  line-height: 1.35;
}

.panel-outline > div {
  display: grid;
  gap: 10px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.panel-outline > div:last-child {
  padding-top: 4px;
  padding-bottom: 0;
  border-bottom: 0;
}

.process-section {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 44px;
  align-items: start;
}

.sticky-intro {
  position: sticky;
  top: 110px;
}

.timeline article {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 8px 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.timeline article:first-child {
  border-top: 1px solid var(--line);
}

.timeline strong,
.timeline p {
  grid-column: 2;
}

.audience-section {
  display: grid;
  gap: 28px;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.audience-grid article {
  display: grid;
  gap: 14px;
  min-height: 190px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--line);
}

.audience-grid .wide {
  grid-column: span 2;
  min-height: 190px;
  align-content: end;
  background: #fff;
  color: #050505;
}

.audience-grid article:not(.wide) {
  grid-column: span 1;
}

.audience-grid .wide p {
  color: #626267;
}

.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 34px;
  border-radius: 38px;
  background: #fff;
  color: #050505;
}

.cta-panel .eyebrow {
  color: #66666b;
}

.cta-panel .primary {
  flex: 0 0 auto;
  min-width: max-content;
  background: linear-gradient(135deg, #050505 0%, #0e3b45 48%, #5eead4 150%);
  color: #fff;
}

.faq {
  padding-bottom: 8px;
}

details {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
}

summary {
  padding: 18px;
  cursor: pointer;
  font-weight: 900;
}

details p {
  padding: 0 18px 18px;
}

footer {
  justify-content: space-between;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 36px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

footer a {
  color: var(--ink);
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
    border-radius: 28px;
  }

  .site-header nav {
    display: none;
  }

  .hero,
  .overview-grid,
  .process-section,
  .audience-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
  }

  h1 {
    font-size: 4.4rem;
  }

  h2 {
    font-size: 2.7rem;
  }

  .phone-preview {
    justify-self: center;
    min-height: 640px;
  }

  .feature-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .overview-grid {
    grid-template-areas:
      "map"
      "connect"
      "audience";
  }

  .sticky-intro {
    position: static;
  }

  .audience-grid .wide {
    grid-column: auto;
    min-height: 190px;
  }

  .audience-grid article:not(.wide) {
    grid-column: auto;
  }
}

@media (max-width: 620px) {
  .site-header,
  main,
  footer {
    width: min(100% - 20px, 1180px);
  }

  .site-header {
    gap: 10px;
  }

  .brand span:last-child {
    display: none;
  }

  .header-cta {
    padding: 0 14px;
  }

  h1 {
    font-size: 3.15rem;
  }

  h2 {
    font-size: 2.15rem;
  }

  .hero {
    gap: 36px;
    padding-bottom: 48px;
  }

  .feature-strip {
    grid-template-columns: 1fr;
  }

  .feature-strip,
  .overview-grid,
  .process-section,
  .audience-section,
  .cta-panel,
  .faq {
    margin-bottom: 58px;
  }

  .panel,
  .cta-panel {
    padding: 20px;
    border-radius: 28px;
  }

  .panel-map {
    min-height: 430px;
  }

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

  .phone-preview {
    min-height: 620px;
    padding: 16px;
    border-radius: 34px;
  }

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

  .timeline article {
    grid-template-columns: 1fr;
  }

  .timeline strong,
  .timeline p {
    grid-column: 1;
  }

  .cta-panel,
  footer {
    display: grid;
    gap: 14px;
  }
}