:root {
  --go-blue: #003399;
  --go-gold: #ffcc00;
  --go-ink: #0b1220;
  --go-muted: #5b6b7c;
  --go-paper: #f4f7fb;
  --go-card: #ffffff;
  --go-line: rgba(0, 51, 153, 0.12);
  --go-ok: #0f7a4f;
  --phone-w: min(320px, 78vw);
}

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

body {
  font-family: "DM Sans", system-ui, sans-serif;
  color: var(--go-ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% 0%, rgba(0, 51, 153, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(255, 204, 0, 0.22), transparent 50%),
    linear-gradient(165deg, #e8eef8 0%, var(--go-paper) 45%, #eef2f8 100%);
  min-height: 100vh;
  line-height: 1.45;
}

.go-demo-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  max-width: 1100px;
  margin: 0 auto;
}

.go-demo-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--go-ink);
  font-weight: 700;
}

.go-demo-brand img { width: 36px; height: 36px; border-radius: 9px; }

.go-demo-brand span { letter-spacing: 0.04em; }

.go-demo-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.go-demo-nav a {
  text-decoration: none;
  color: var(--go-blue);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--go-line);
}

.go-demo-nav a.is-active {
  background: var(--go-blue);
  color: #fff;
  border-color: var(--go-blue);
}

.go-demo-stage {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.5rem 1.25rem 2.5rem;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.go-demo-copy h1 {
  font-family: Fraunces, Georgia, serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.65rem;
}

.go-demo-copy .eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--go-blue);
  background: rgba(255, 204, 0, 0.35);
  border: 1px solid rgba(255, 204, 0, 0.55);
  padding: 0.28rem 0.55rem;
  border-radius: 6px;
  margin-bottom: 0.85rem;
}

.go-demo-copy .lead {
  color: var(--go-muted);
  font-size: 1.05rem;
  max-width: 34ch;
  margin-bottom: 1.25rem;
}

.go-demo-caption {
  min-height: 4.5rem;
  padding: 1rem 1.1rem;
  background: var(--go-card);
  border: 1px solid var(--go-line);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(11, 18, 32, 0.06);
  margin-bottom: 1rem;
}

.go-demo-caption .step-kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--go-blue);
  margin-bottom: 0.35rem;
}

.go-demo-caption h2 {
  font-family: Fraunces, Georgia, serif;
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

.go-demo-caption p {
  color: var(--go-muted);
  font-size: 0.95rem;
}

.go-demo-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.go-demo-controls button {
  border: none;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  border-radius: 999px;
  padding: 0.65rem 1.15rem;
}

.go-btn-play {
  background: var(--go-blue);
  color: #fff;
}

.go-btn-ghost {
  background: #fff;
  color: var(--go-ink);
  border: 1px solid var(--go-line) !important;
}

.go-demo-progress {
  flex: 1;
  min-width: 120px;
  height: 6px;
  background: rgba(0, 51, 153, 0.12);
  border-radius: 999px;
  overflow: hidden;
}

.go-demo-progress > i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--go-blue), #1a56d6);
  border-radius: inherit;
  transition: width 0.15s linear;
}

.go-demo-dots {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.go-demo-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: rgba(0, 51, 153, 0.2);
  cursor: pointer;
}

.go-demo-dots button.is-on {
  background: var(--go-gold);
  box-shadow: 0 0 0 3px rgba(255, 204, 0, 0.35);
}

.go-demo-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.go-demo-cta a {
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
}

.go-cta-primary {
  background: var(--go-gold);
  color: var(--go-ink);
}

.go-cta-secondary {
  background: transparent;
  color: var(--go-blue);
  border: 1px solid var(--go-line);
}

/* Phone frame */
.go-phone-wrap {
  display: flex;
  justify-content: center;
  perspective: 1200px;
}

.go-phone {
  width: var(--phone-w);
  aspect-ratio: 9 / 19.2;
  background: #0a0f1a;
  border-radius: 36px;
  padding: 10px;
  box-shadow:
    0 30px 60px rgba(11, 18, 32, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset;
  position: relative;
  transform: rotateY(-6deg) rotateX(2deg);
  animation: phoneFloat 5s ease-in-out infinite;
}

@keyframes phoneFloat {
  0%, 100% { transform: rotateY(-6deg) rotateX(2deg) translateY(0); }
  50% { transform: rotateY(-4deg) rotateX(1deg) translateY(-8px); }
}

.go-phone__notch {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 34%;
  height: 18px;
  background: #0a0f1a;
  border-radius: 999px;
  z-index: 5;
}

.go-phone__screen {
  height: 100%;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(180deg, #f8fafc 0%, #eef2f8 100%);
  position: relative;
}

.go-scene {
  position: absolute;
  inset: 0;
  padding: 2.4rem 0.85rem 1rem;
  opacity: 0;
  transform: translateY(18px) scale(0.98);
  pointer-events: none;
  transition: opacity 0.45s ease, transform 0.45s ease;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.go-scene.is-active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.go-ui-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--go-blue);
}

.go-ui-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(0, 51, 153, 0.08);
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 600;
}

.go-ui-title {
  font-family: Fraunces, Georgia, serif;
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.2;
}

.go-ui-sub {
  font-size: 0.78rem;
  color: var(--go-muted);
}

.go-ui-card {
  background: #fff;
  border: 1px solid var(--go-line);
  border-radius: 14px;
  padding: 0.7rem 0.75rem;
  box-shadow: 0 6px 16px rgba(11, 18, 32, 0.05);
}

.go-ui-card strong {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.2rem;
}

.go-ui-card span {
  font-size: 0.72rem;
  color: var(--go-muted);
}

.go-ui-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.go-ui-thumb {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--go-blue), #1a56d6);
  flex-shrink: 0;
  display: grid;
  place-items: center;
  color: var(--go-gold);
  font-weight: 800;
  font-size: 0.85rem;
}

.go-ui-thumb--gold {
  background: linear-gradient(135deg, #e6b800, var(--go-gold));
  color: var(--go-blue);
}

.go-ui-btn {
  margin-top: auto;
  background: var(--go-blue);
  color: #fff;
  text-align: center;
  font-weight: 700;
  font-size: 0.82rem;
  padding: 0.7rem;
  border-radius: 12px;
}

.go-ui-btn--gold {
  background: var(--go-gold);
  color: var(--go-ink);
}

.go-ui-badge {
  align-self: flex-start;
  background: rgba(15, 122, 79, 0.12);
  color: var(--go-ok);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
}

.go-ui-map {
  flex: 1;
  min-height: 110px;
  border-radius: 14px;
  background:
    radial-gradient(circle at 70% 40%, rgba(255, 204, 0, 0.55), transparent 18%),
    linear-gradient(135deg, #d7e3f7, #c5d4ef 40%, #b8cceb);
  position: relative;
  overflow: hidden;
}

.go-ui-pin {
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--go-blue);
  border: 2px solid #fff;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  animation: pulse 1.6s ease infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

.go-ui-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
}

.go-ui-stat {
  background: #fff;
  border: 1px solid var(--go-line);
  border-radius: 12px;
  padding: 0.55rem;
  text-align: center;
}

.go-ui-stat b {
  display: block;
  font-size: 1rem;
  color: var(--go-blue);
}

.go-ui-stat small {
  font-size: 0.65rem;
  color: var(--go-muted);
}

/* Hub */
.go-hub {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.go-hub h1 {
  font-family: Fraunces, Georgia, serif;
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.go-hub .lead {
  color: var(--go-muted);
  max-width: 48ch;
  margin-bottom: 1.75rem;
}

.go-hub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.go-hub-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  background: #fff;
  border: 1px solid var(--go-line);
  border-radius: 18px;
  padding: 1.25rem;
  box-shadow: 0 12px 28px rgba(11, 18, 32, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  min-height: 220px;
}

.go-hub-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(11, 18, 32, 0.1);
}

.go-hub-card .tag {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--go-blue);
  margin-bottom: 0.6rem;
}

.go-hub-card h2 {
  font-family: Fraunces, Georgia, serif;
  font-size: 1.35rem;
  margin-bottom: 0.45rem;
}

.go-hub-card p {
  color: var(--go-muted);
  font-size: 0.92rem;
  flex: 1;
}

.go-hub-card .play {
  margin-top: 1rem;
  font-weight: 700;
  color: var(--go-blue);
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .go-demo-stage {
    grid-template-columns: 1fr;
    padding-bottom: 5.5rem;
  }

  .go-phone {
    transform: none;
    animation: none;
    order: -1;
    margin: 0 auto 0.5rem;
  }

  .go-phone-wrap {
    margin-bottom: 0.25rem;
  }

  .go-demo-copy h1 {
    font-size: 1.55rem;
  }

  .go-demo-controls {
    position: sticky;
    bottom: 0.75rem;
    z-index: 20;
    background: rgba(244, 247, 251, 0.94);
    backdrop-filter: blur(8px);
    padding: 0.65rem;
    border-radius: 14px;
    border: 1px solid var(--go-line);
    box-shadow: 0 8px 24px rgba(11, 18, 32, 0.1);
  }

  .go-demo-controls button {
    min-height: 44px;
    padding: 0.7rem 1rem;
  }

  .go-demo-cta a {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    text-align: center;
  }

  .go-demo-nav {
    gap: 0.35rem;
  }

  .go-demo-nav a {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    padding: 0.45rem 0.7rem;
  }

  .go-hub-grid {
    grid-template-columns: 1fr;
  }

  .go-hub-card {
    min-height: 160px;
    padding: 1.1rem 1.15rem;
  }

  .go-hub-card .play {
    font-size: 1rem;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}

.go-share-box {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  background: #fff;
  border: 1px dashed rgba(0, 51, 153, 0.25);
  border-radius: 14px;
  font-size: 0.9rem;
  color: var(--go-muted);
}

.go-share-box strong {
  display: block;
  color: var(--go-ink);
  margin-bottom: 0.45rem;
}

.go-share-box code {
  display: block;
  word-break: break-all;
  background: var(--go-paper);
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  margin: 0.35rem 0;
  font-size: 0.82rem;
  color: var(--go-blue);
}