/* Sightline 3D landing page */
/* Clear product hero + scroll-driven cinematic system */

:root {
  --lp-bg: #090b0f;
  --lp-surface: #10141a;
  --lp-surface-elevated: #171c24;
  --lp-text: #f2f2f4;
  --lp-text-muted: #a4a5aa;
  --lp-text-faint: #676970;
  --lp-accent: #e8364e;
  --lp-accent-hover: #d72d44;
  --lp-accent-soft: rgba(232, 54, 78, 0.13);
  --lp-accent-border: rgba(232, 54, 78, 0.42);
  --lp-card: rgba(15, 16, 20, 0.86);
  --lp-border: rgba(255, 255, 255, 0.1);
  --lp-border-strong: rgba(255, 255, 255, 0.2);
  --lp-radius-sm: 10px;
  --lp-radius: 14px;
  --lp-radius-lg: 20px;
  --lp-radius-full: 999px;
  --lp-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  background:
    radial-gradient(circle at 70% 44%, rgba(91, 108, 132, 0.14), transparent 28%),
    radial-gradient(ellipse at 50% 108%, rgba(58, 72, 94, 0.13), transparent 43%),
    linear-gradient(132deg, #0a0d12 0%, #0d1219 54%, #111722 100%);
  background-attachment: fixed;
  color: var(--lp-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }

/* Hero atmosphere. No blocking image asset above the fold. */
#hero-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 76% 44%, rgba(255, 255, 255, 0.82), transparent 25%),
    radial-gradient(circle at 78% 50%, rgba(112, 120, 132, 0.11), transparent 32%),
    radial-gradient(ellipse at 58% 106%, rgba(121, 126, 134, 0.14), transparent 38%),
    linear-gradient(118deg, #f4f3f0 0%, #ecebe8 54%, #dedfdf 100%);
  opacity: 1;
  transition: opacity 0.9s var(--lp-ease);
  pointer-events: none;
}
#hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(244, 243, 240, 0.98) 0%, rgba(244, 243, 240, 0.76) 38%, transparent 67%),
    linear-gradient(0deg, rgba(231, 231, 228, 0.72) 0%, transparent 32%);
}

/* ── Intro Background Image (Section 6 finale) ── */
#intro-bg {
  display: none;
}

/* ── 3D Background ── */
#sketchfab-container {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.8s var(--lp-ease);
}
#sketchfab-viewer {
  width: 100%;
  height: 100%;
  border: none;
  pointer-events: none;
}

/* Readability scrim shared by the Signal Horizon and earth scenes. */
#sketchfab-container::after {
  content: '';
  position: fixed;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(9, 13, 19, 0.73) 0%, rgba(10, 14, 20, 0.13) 48%, transparent 73%),
    radial-gradient(ellipse at 64% 48%, transparent 25%, rgba(8, 12, 18, 0.13) 72%, rgba(7, 10, 15, 0.42) 100%);
  z-index: 1;
  pointer-events: none;
}

/* ── Video Overlay (Start Free → intro video → /app) ── */
#video-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: #000;
  align-items: center;
  justify-content: center;
}
#video-overlay.active { display: flex; }
#intro-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Loading Screen (Rose Curve) ── */
#loading-screen {
  position: fixed;
  inset: 0;
  background: var(--lp-bg, #050507);
  z-index: 99998;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
#loading-screen.hidden { opacity: 0; visibility: hidden; }
.ls-inner { text-align: center; }
.ls-frame {
  width: min(50vmin, 240px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  color: var(--lp-accent);
}
.ls-frame svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* ── Buttons ── */
.lp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--lp-radius-full);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s var(--lp-ease), background-color 0.25s var(--lp-ease), border-color 0.25s var(--lp-ease), box-shadow 0.25s var(--lp-ease);
  border: 1px solid transparent;
  white-space: nowrap;
}
.lp-btn-lg { padding: 14px 32px; font-size: 16px; }
.lp-btn-block { width: 100%; }
.lp-btn-primary {
  background: #eceef1;
  color: #101216;
  border-color: rgba(255, 255, 255, 0.72);
}
.lp-btn-primary:hover {
  background: #ffffff;
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.38);
  transform: translateY(-2px);
}
.lp-btn:active { transform: scale(0.98); }
.lp-btn:focus-visible,
.hero-portal:focus-visible {
  outline: 2px solid var(--lp-text);
  outline-offset: 4px;
}
.lp-btn-ghost {
  background: rgba(255, 255, 255, 0.045);
  color: var(--lp-text);
  border-color: var(--lp-border);
  backdrop-filter: blur(14px);
}
.lp-btn-ghost:hover { border-color: var(--lp-border-strong); background: rgba(255,255,255,0.09); }

/* ── Nav ── */
.lp-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  min-height: 76px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.075);
  background: rgba(5, 6, 7, 0.52);
  backdrop-filter: blur(18px);
  padding: 14px 0;
  pointer-events: none;
  transition: opacity 0.4s var(--lp-ease), transform 0.4s var(--lp-ease);
}
.lp-nav-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: auto;
}
.lp-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lp-nav-logo {
  width: 40px; height: 40px;
  border-radius: var(--lp-radius-sm);
  object-fit: contain;
}
.lp-logo-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1;
}
.lp-logo-copy strong {
  color: var(--lp-text);
  font-size: 23px;
  font-weight: 600;
  letter-spacing: -0.035em;
}
.lp-logo-copy small {
  margin-top: 5px;
  color: #8e929b;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.055em;
}
.lp-nav-cta { display: flex; gap: 8px; }

/* ── Section 0: Signal Horizon hero ── */
.lp-hero-section {
  position: relative;
  overflow: hidden;
  padding: 0;
}
.lp-hero-shell {
  position: relative;
  width: min(100%, 1440px);
  min-height: 100dvh;
  margin: 0 auto;
  padding: 0 clamp(24px, 6vw, 88px) 132px;
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  align-items: center;
  pointer-events: none;
}
.lp-hero-copy {
  position: relative;
  z-index: 3;
  max-width: 560px;
  margin-top: -2vh;
  pointer-events: auto;
  transition: opacity 0.5s var(--lp-ease), transform 0.5s var(--lp-ease);
}
.hero-brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 30px -8px;
}
.hero-brand-mark {
  width: 68px;
  height: 68px;
  flex: 0 0 68px;
  object-fit: contain;
}
.hero-brand-wordmark {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1;
}
.hero-brand-wordmark strong {
  color: var(--lp-text);
  font-size: 31px;
  font-weight: 650;
  letter-spacing: -0.045em;
}
.hero-brand-wordmark small {
  margin-top: 7px;
  color: var(--lp-text-muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.lp-hero-copy h1 {
  max-width: 560px;
  margin: 0 0 24px;
  color: var(--lp-text);
  font-size: clamp(48px, 4.65vw, 72px);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 0.98;
  text-wrap: balance;
}
.lp-hero-copy p {
  max-width: 510px;
  margin: 0 0 34px;
  color: var(--lp-text-muted);
  font-size: clamp(17px, 1.35vw, 20px);
  line-height: 1.55;
  text-wrap: pretty;
}
.lp-hero-copy .lp-btn-primary {
  min-height: 54px;
  padding-inline: 30px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}
.hero-world-trigger {
  position: absolute;
  z-index: 3;
  top: 49%;
  left: 76%;
  width: min(36vw, 520px);
  aspect-ratio: 1;
  border: 0;
  border-radius: 50%;
  background: transparent;
  transform: translate(-50%, -50%);
  cursor: pointer;
  pointer-events: auto;
  -webkit-tap-highlight-color: transparent;
}
.hero-world-trigger:focus-visible {
  outline: 2px solid rgba(35, 39, 46, 0.66);
  outline-offset: 10px;
}
.hero-portal {
  --portal-shift-x: 0px;
  --portal-shift-y: 0px;
  position: absolute;
  z-index: 4;
  left: 76%;
  bottom: 170px;
  width: clamp(320px, 25vw, 370px);
  min-height: 76px;
  padding: 9px 10px 9px 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--lp-radius-full);
  background: linear-gradient(180deg, rgba(28, 31, 36, 0.9), rgba(10, 12, 15, 0.96));
  color: var(--lp-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  transform: translate3d(calc(-50% + var(--portal-shift-x)), var(--portal-shift-y), 0);
  will-change: transform;
  cursor: pointer;
  pointer-events: auto;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    inset 0 -12px 30px rgba(4, 5, 7, 0.32),
    0 18px 54px rgba(0, 0, 0, 0.42);
  transition: transform 0.22s var(--lp-ease), opacity 0.35s var(--lp-ease), border-color 0.35s var(--lp-ease), box-shadow 0.35s var(--lp-ease);
}
.hero-portal::before {
  content: '';
  position: absolute;
  left: 18%;
  right: 18%;
  top: -16px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(218, 222, 230, 0.5), transparent);
  box-shadow: 0 -5px 18px rgba(218, 222, 230, 0.08);
  pointer-events: none;
}
.hero-portal::after {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: linear-gradient(112deg, transparent 20%, rgba(255, 255, 255, 0.08) 44%, transparent 62%);
  opacity: 0;
  transform: translateX(-28%);
  pointer-events: none;
  transition: opacity 0.35s var(--lp-ease), transform 0.55s var(--lp-ease);
}
.hero-portal-brand {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.hero-portal-logo-wrap {
  width: 50px;
  height: 50px;
  flex: 0 0 50px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.055);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.hero-portal-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
}
.hero-portal-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1;
}
.hero-portal-copy strong {
  color: var(--lp-text);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.025em;
}
.hero-portal-copy span {
  margin-top: 7px;
  color: #999da6;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.hero-portal-arrow {
  position: relative;
  z-index: 1;
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: transform 0.35s var(--lp-ease), background-color 0.35s var(--lp-ease), border-color 0.35s var(--lp-ease);
}
.hero-portal-arrow::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: translate(-65%, -50%) rotate(45deg);
}
.hero-portal:hover {
  border-color: rgba(255, 255, 255, 0.34);
  transform: translate3d(calc(-50% + var(--portal-shift-x)), calc(var(--portal-shift-y) - 3px), 0);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 -12px 32px rgba(4, 5, 7, 0.38),
    0 24px 66px rgba(0, 0, 0, 0.5);
}
.hero-portal:hover::after { opacity: 1; transform: translateX(24%); }
.hero-portal:hover .hero-portal-arrow {
  transform: translateX(3px);
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.11);
}
.hero-portal:hover .hero-portal-logo-wrap {
  border-color: rgba(232, 54, 78, 0.28);
}
.hero-portal:active {
  transform: translate3d(calc(-50% + var(--portal-shift-x)), var(--portal-shift-y), 0) scale(0.985);
}
.portal-armed .hero-portal {
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 -18px 40px rgba(4, 5, 7, 0.42),
    0 26px 72px rgba(0, 0, 0, 0.54);
}
.portal-armed .hero-portal::before {
  background: linear-gradient(90deg, transparent, rgba(238, 241, 246, 0.78), transparent);
}
.portal-opening .lp-hero-copy {
  opacity: 0;
  transform: translateY(-26px);
}
.portal-opening .hero-portal {
  opacity: 0;
  transform: translate3d(calc(-50% + var(--portal-shift-x)), var(--portal-shift-y), 0) scale(1.08);
}

/* Section 0 uses the pearl studio theme from the visual reference. */
body.hero-light #loading-screen {
  background: #efeeeb;
}
body.hero-light #sketchfab-container::after {
  background:
    linear-gradient(90deg, rgba(244, 243, 240, 0.9) 0%, rgba(244, 243, 240, 0.3) 47%, transparent 72%),
    radial-gradient(ellipse at center, transparent 34%, rgba(205, 206, 205, 0.12) 78%, rgba(190, 192, 192, 0.22) 100%);
}
body.hero-light .lp-nav {
  border-bottom-color: rgba(26, 29, 34, 0.1);
  background: rgba(242, 241, 238, 0.68);
  box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.42);
}
body.hero-light .lp-logo-copy strong {
  color: #1a1d22;
}
body.hero-light .lp-logo-copy small {
  color: #686c73;
}
body.hero-light .lp-hero-copy h1 {
  color: #171a1f;
}
body.hero-light .hero-brand-wordmark strong {
  color: #171a1f;
}
body.hero-light .hero-brand-wordmark small {
  color: #686c73;
}
body.hero-light .lp-hero-copy p {
  color: #5f646b;
}
body.hero-light .lp-hero-copy .lp-btn-primary {
  color: #f4f3f0;
  background: #1b1e23;
  border-color: rgba(27, 30, 35, 0.92);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.13),
    0 14px 34px rgba(45, 49, 56, 0.18);
}
body.hero-light .lp-hero-copy .lp-btn-primary:hover {
  color: #ffffff;
  background: #25292f;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 18px 42px rgba(45, 49, 56, 0.24);
}
body.hero-light .lp-btn:focus-visible,
body.hero-light .hero-portal:focus-visible {
  outline-color: #24282e;
}
body.hero-light .hero-portal {
  color: #202329;
  border-color: rgba(32, 35, 41, 0.16);
  background:
    linear-gradient(180deg, rgba(250, 249, 246, 0.82), rgba(228, 228, 226, 0.74));
  backdrop-filter: blur(22px) saturate(135%);
  -webkit-backdrop-filter: blur(22px) saturate(135%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.92),
    inset 0 -10px 28px rgba(110, 114, 121, 0.08),
    0 20px 54px rgba(47, 51, 58, 0.2);
}
body.hero-light .hero-portal::before {
  background: linear-gradient(90deg, transparent, rgba(83, 88, 96, 0.3), transparent);
  box-shadow: none;
}
body.hero-light .hero-portal::after {
  background: linear-gradient(112deg, transparent 20%, rgba(255, 255, 255, 0.44) 44%, transparent 62%);
}
body.hero-light .hero-portal-logo-wrap {
  border-color: rgba(31, 34, 40, 0.12);
  background: rgba(255, 255, 255, 0.48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.86);
}
body.hero-light .hero-portal-copy strong {
  color: #202329;
}
body.hero-light .hero-portal-copy span {
  color: #686d74;
}
body.hero-light .hero-portal-arrow {
  border-color: rgba(31, 34, 40, 0.16);
  background: rgba(255, 255, 255, 0.42);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.76);
}
body.hero-light .hero-portal:hover,
body.hero-light.portal-armed .hero-portal {
  border-color: rgba(31, 34, 40, 0.28);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.96),
    inset 0 -12px 30px rgba(110, 114, 121, 0.1),
    0 24px 62px rgba(47, 51, 58, 0.25);
}
body.hero-light .hero-portal:hover .hero-portal-arrow {
  border-color: rgba(31, 34, 40, 0.28);
  background: rgba(255, 255, 255, 0.7);
}
body.hero-light.portal-armed .hero-portal::before {
  background: linear-gradient(90deg, transparent, rgba(64, 69, 77, 0.42), transparent);
}

@media (prefers-reduced-transparency: reduce) {
  .lp-nav,
  .lp-btn-ghost { backdrop-filter: none; background: rgba(8, 9, 11, 0.96); }
}

/* ── Hero Brand (Section 0) ── */
.lp-hero-logo {
  margin: 0 auto 24px;
}
.lp-hero-logo img {
  width: 60px; height: 60px;
  border-radius: 14px;
  filter: drop-shadow(0 8px 24px rgba(232,54,78,0.3));
  margin-bottom: 8px;
}
.lp-hero-brand {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(180deg, #ffffff 0%, #888888 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 80px rgba(232,54,78,0.15);
  margin-bottom: 16px;
}
.lp-hero-brand + .lp-hero-tag {
  margin-bottom: 20px;
}
.lp-hero-brand + .lp-hero-tag + .lp-hero-title {
  margin-top: 0;
}

/* ── Scroll Container ── */
#scroll-container {
  position: relative;
  z-index: 2;
  pointer-events: none;
  scroll-snap-type: y mandatory;
  height: 100dvh;
  overflow-y: scroll;
}

/* ── Sections ── */
.lp-section {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 60px 24px;
  opacity: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
  scroll-snap-align: start;
  scroll-snap-stop: always;
}
.lp-section.active {
  opacity: 1;
  pointer-events: auto;
}
.lp-section.lp-hero-section {
  height: 100dvh;
  min-height: 100dvh;
  padding: 0;
}
.lp-section-inner {
  max-width: 460px;
  pointer-events: auto;
  margin-left: 8%;
}
body.observatory-mode .lp-section-inner {
  filter: drop-shadow(0 22px 45px rgba(0, 0, 0, 0.2));
}
.lp-section-right .lp-section-inner {
  margin-left: auto;
  margin-right: 8%;
  text-align: right;
}
.lp-section-left .lp-section-inner {
  margin-left: 8%;
  margin-right: auto;
  text-align: left;
}
.lp-section-center {
  justify-content: center;
}
.lp-section-center .lp-section-inner {
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ── Hero ── */
.lp-hero-tag {
  display: inline-block;
  padding: 6px 14px;
  background: var(--lp-accent-soft);
  color: var(--lp-accent);
  border: 1px solid var(--lp-accent-border);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.lp-hero-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
}
.lp-accent { color: var(--lp-accent); }
.lp-hero-desc {
  font-size: 17px;
  color: var(--lp-text-muted);
  margin-bottom: 32px;
  backdrop-filter: blur(4px);
  background: rgba(5,5,7,0.3);
  padding: 12px 0;
}
.lp-hero-actions { margin-bottom: 48px; }
.lp-hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
.lp-stat strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  font-family: 'JetBrains Mono', monospace;
}
.lp-stat span { font-size: 12px; color: var(--lp-text-faint); }

/* ── Section Content ── */
.lp-section-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  color: #e34a5f;
  letter-spacing: 2px;
}
.lp-section h2 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.15;
  margin: 12px 0 16px;
}
.lp-section p {
  font-size: 16px;
  color: var(--lp-text-muted);
  margin-bottom: 24px;
}

/* ── Feature Bullets ── */
.lp-feature-bullets {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.lp-bullet {
  font-size: 14px;
  padding: 8px 16px;
  background: linear-gradient(180deg, rgba(222, 228, 236, 0.065), rgba(167, 178, 193, 0.035));
  border: 1px solid rgba(218, 225, 235, 0.11);
  border-radius: 10px;
  backdrop-filter: blur(12px);
  position: relative;
  padding-left: 36px;
}
.lp-bullet::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 12px;
  width: 6px;
  height: 10px;
  border-right: 2px solid var(--lp-accent);
  border-bottom: 2px solid var(--lp-accent);
  transform: rotate(45deg);
}

/* ── Source Chips ── */
.lp-source-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.lp-source-chip {
  font-size: 13px;
  padding: 6px 14px;
  color: #c7cdd6;
  background: linear-gradient(180deg, rgba(222, 228, 236, 0.075), rgba(167, 178, 193, 0.038));
  border: 1px solid rgba(218, 225, 235, 0.12);
  border-radius: 100px;
  backdrop-filter: blur(12px);
}

body.final-quiet::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 23%, rgba(104, 119, 141, 0.13), transparent 25%),
    radial-gradient(ellipse at 50% 78%, rgba(50, 61, 78, 0.08), transparent 40%);
}

/* ── Signal Convergence finale ── */
.lp-final-section {
  position: relative;
  overflow: hidden;
}
.lp-final-inner {
  width: min(100%, 720px);
  max-width: 720px;
  padding-top: clamp(190px, 28vh, 260px);
  transform: translateY(3vh);
}
.lp-final-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 18px;
  color: #d9dde4;
}
.lp-final-brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}
.lp-final-brand span {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.035em;
}
.lp-final-section h2 {
  max-width: 700px;
  margin: 0 0 16px;
  font-size: clamp(36px, 4.8vw, 58px);
  line-height: 1.02;
  letter-spacing: -0.045em;
  text-wrap: balance;
}
.lp-final-section p {
  max-width: 590px;
  margin: 0 auto 26px;
  color: #aeb4bd;
  font-size: 16px;
}
.lp-final-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.lp-final-actions .lp-btn {
  min-width: 126px;
}

/* ── Footer ── */
.lp-footer { margin-top: 48px; }
.lp-footer p { font-size: 12px; color: var(--lp-text-faint); }

/* ── Scroll Progress ── */
.scroll-progress {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1001;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s var(--lp-ease);
}
.sp-track {
  width: 4px;
  height: 200px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  position: relative;
}
.sp-fill {
  width: 100%;
  height: 0%;
  background: var(--lp-accent);
  border-radius: 2px;
  transition: height 0.3s ease;
}
.sp-dots {
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.sp-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  transition: all 0.3s;
}
.sp-dot.active {
  background: var(--lp-accent);
  box-shadow: 0 0 8px rgba(232,54,78,0.6);
}

/* ── Scroll Hint (fixed at bottom of hero) ── */
.scroll-hint, #scroll-hint-hero {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--lp-text-muted);
  margin-top: 0;
  animation: bounce 2s ease infinite;
  transition: opacity 0.4s ease;
  cursor: default;
}
#scroll-hint-hero svg { opacity: 0.6; }
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ── Responsive hero ── */
@media (max-width: 900px) {
  .lp-hero-shell {
    grid-template-columns: 1fr;
    align-items: start;
    padding: 48px 24px 118px;
  }
  .lp-hero-copy {
    max-width: 560px;
    margin-top: 0;
  }
  .hero-brand-lockup { margin-bottom: 24px; }
  .lp-hero-copy h1 {
    max-width: 520px;
    font-size: clamp(42px, 8vw, 62px);
  }
  .hero-portal { left: 50%; bottom: 34px; }
  .hero-world-trigger {
    top: 68%;
    left: 52%;
    width: min(76vw, 390px);
  }
  .scroll-progress { right: 14px; }
}

@media (max-width: 600px) {
  .lp-nav { min-height: 68px; padding-block: 12px; }
  .lp-nav-inner { position: relative; width: 100%; padding-inline: 16px; }
  .lp-nav-cta { position: absolute; top: 0; right: 16px; }
  .lp-nav-logo { width: 34px; height: 34px; }
  .lp-logo-copy strong { font-size: 20px; }
  .lp-logo-copy small { margin-top: 4px; font-size: 8px; letter-spacing: 0.04em; }
  .lp-nav .lp-btn { padding: 8px 14px; font-size: 13px; }
  .lp-hero-shell {
    height: 100%;
    min-height: 0;
    padding: 32px 18px 112px;
  }
  .lp-hero-copy { max-width: 100%; }
  .hero-brand-lockup {
    gap: 10px;
    margin: 0 0 20px -6px;
  }
  .hero-brand-mark {
    width: 56px;
    height: 56px;
    flex-basis: 56px;
  }
  .hero-brand-wordmark strong { font-size: 25px; }
  .hero-brand-wordmark small { margin-top: 5px; font-size: 8px; letter-spacing: 0.1em; }
  .lp-hero-copy h1 {
    max-width: 330px;
    margin-bottom: 16px;
    font-size: clamp(36px, 10.3vw, 42px);
    line-height: 1.01;
    text-wrap: pretty;
  }
  .lp-hero-copy p {
    max-width: 360px;
    margin-bottom: 20px;
    font-size: 15px;
    line-height: 1.45;
  }
  .lp-hero-copy .lp-btn-primary {
    min-height: 48px;
    padding-inline: 22px;
    font-size: 14px;
  }
  .hero-portal {
    bottom: 18px;
    width: min(calc(100vw - 36px), 420px);
    min-height: 70px;
    padding: 8px;
    gap: 8px;
  }
  .hero-world-trigger {
    top: 69%;
    left: 51%;
    width: min(74vw, 330px);
  }
  .hero-portal-logo-wrap { width: 44px; height: 44px; flex-basis: 44px; }
  .hero-portal-logo { width: 38px; height: 38px; }
  .hero-portal-copy strong { font-size: 16px; }
  .hero-portal-copy span { margin-top: 6px; font-size: 10px; }
  .hero-portal-arrow { width: 42px; height: 42px; flex-basis: 42px; }
  .hero-portal::before { top: -14px; height: 1px; }
  .hero-portal::after { right: 1px; }
  .scroll-progress { display: none; }
  .lp-section { padding: 84px 18px 40px; }
  .lp-section-inner,
  .lp-section-left .lp-section-inner,
  .lp-section-right .lp-section-inner {
    width: 100%;
    max-width: 440px;
    margin-inline: auto;
    text-align: left;
  }
  .lp-final-inner {
    max-width: 100%;
    padding-top: 200px;
    transform: none;
    text-align: center;
  }
  .lp-final-section h2 {
    font-size: clamp(34px, 10vw, 46px);
  }
  .lp-final-section p {
    max-width: 340px;
  }
  .lp-final-actions {
    width: 100%;
  }
  .lp-final-actions .lp-btn {
    flex: 1;
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}