:root {
  --bg: #091118;
  --bg-soft: #0f1b25;
  --bg-card: rgba(20, 31, 42, 0.82);
  --bg-card-strong: rgba(27, 40, 53, 0.94);
  --line: rgba(116, 149, 185, 0.18);
  --line-strong: rgba(136, 177, 220, 0.34);
  --text: #f3f8ff;
  --muted: #99aebe;
  --accent: #2b5278;
  --accent-soft: #3e6b99;
  --accent-bright: #7abaff;
  --success: #97d8ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius-xl: 36px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI Variable Display", "Bahnschrift", "Trebuchet MS", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(53, 94, 138, 0.35), transparent 34%),
    radial-gradient(circle at 85% 18%, rgba(39, 82, 124, 0.28), transparent 28%),
    linear-gradient(180deg, #0e1820 0%, #091118 46%, #061017 100%);
  min-height: 100vh;
}

body.deeplink-mode .features,
body.deeplink-mode .platforms,
body.deeplink-mode .footer .footer-meta,
body.deeplink-mode .nav a[href="#features"],
body.deeplink-mode .button-disabled {
  display: none;
}

body.deeplink-mode .hero {
  min-height: calc(100vh - 110px);
  align-items: center;
}

body.deeplink-mode .footer {
  padding-top: 0;
}

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

button,
a,
input {
  font: inherit;
}

.page-shell {
  position: relative;
  overflow: hidden;
}

.ambient {
  position: absolute;
  border-radius: 999px;
  filter: blur(18px);
  pointer-events: none;
}

.ambient-one {
  width: 420px;
  height: 420px;
  top: -120px;
  right: -120px;
  background: radial-gradient(circle, rgba(68, 122, 178, 0.34), transparent 70%);
}

.ambient-two {
  width: 380px;
  height: 380px;
  left: -120px;
  top: 42%;
  background: radial-gradient(circle, rgba(52, 101, 155, 0.22), transparent 72%);
}

.topbar,
.hero,
.features,
.platforms,
.footer {
  width: min(calc(100% - 32px), var(--max-width));
  margin-inline: auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0 14px;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent-soft), var(--accent));
  box-shadow: 0 16px 38px rgba(43, 82, 120, 0.36);
}

.brand-text {
  font-size: 1.2rem;
}

.nav {
  display: inline-flex;
  align-items: center;
  gap: 24px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(9, 17, 24, 0.58);
}

.nav a {
  color: var(--muted);
  transition: color 180ms ease;
}

.nav a:hover {
  color: var(--text);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 0;
  border-radius: 999px;
  padding: 15px 22px;
  min-height: 54px;
  cursor: pointer;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-soft), var(--accent));
  box-shadow: 0 18px 42px rgba(43, 82, 120, 0.36);
}

.button-ghost {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.button-small {
  padding: 12px 18px;
  min-height: 46px;
}

.button-disabled {
  color: rgba(226, 236, 245, 0.55);
  border: 1px dashed rgba(145, 165, 184, 0.28);
  background: rgba(255, 255, 255, 0.03);
  cursor: not-allowed;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--success);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 48px;
  align-items: center;
  padding: 54px 0 36px;
}

.hero h1,
.section-heading h2,
.footer-card h2 {
  margin: 0;
  line-height: 0.95;
  letter-spacing: -0.05em;
  font-weight: 800;
}

.hero h1 {
  max-width: 9ch;
  font-size: clamp(3.4rem, 8vw, 6.3rem);
}

.hero-text,
.section-heading,
.feature-card p,
.platform-card p,
.footer-card p {
  color: var(--muted);
  line-height: 1.65;
}

.hero-text {
  max-width: 62ch;
  margin: 22px 0 28px;
  font-size: 1.08rem;
}

.deeplink-status {
  margin: 18px 0 0;
  color: var(--success);
  line-height: 1.6;
}

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

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-badges span,
.feature-card,
.platform-card,
.footer-card,
.device-frame {
  border: 1px solid var(--line);
  background: var(--bg-card);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.hero-badges span {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--success);
  font-size: 0.92rem;
}

.feature-card h3,
.platform-card h3 {
  display: block;
  margin-bottom: 8px;
  font-size: 1.02rem;
}

.hero-visual {
  position: relative;
  min-height: 560px;
}

.device-frame {
  position: absolute;
  inset: 28px 28px 60px 28px;
  border-radius: 42px;
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(28, 44, 58, 0.96), rgba(13, 23, 32, 0.96));
  overflow: hidden;
}

.device-frame::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 34px;
  border: 1px solid rgba(184, 215, 244, 0.08);
  pointer-events: none;
}

.device-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px 16px;
}

.device-title {
  font-weight: 800;
  font-size: 1.2rem;
}

.device-status {
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--success);
  background: rgba(122, 186, 255, 0.1);
}

.chat-flow {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: calc(100% - 58px);
  padding: 8px 6px 10px;
}

.bubble {
  max-width: 80%;
  padding: 14px 15px 12px;
  border-radius: 20px;
}

.bubble p {
  margin: 0;
  line-height: 1.45;
}

.bubble-in {
  align-self: flex-start;
  border-bottom-left-radius: 8px;
  background: rgba(28, 42, 55, 0.98);
}

.bubble-out {
  align-self: flex-end;
  border-bottom-right-radius: 8px;
  background: linear-gradient(135deg, rgba(56, 101, 146, 0.96), rgba(43, 82, 120, 0.98));
}

.bubble-name,
.bubble-time {
  display: block;
  font-size: 0.78rem;
}

.bubble-name {
  margin-bottom: 8px;
  color: var(--success);
  font-weight: 700;
}

.bubble-time {
  margin-top: 8px;
  color: rgba(230, 241, 251, 0.72);
}

.media-card {
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 14px;
  padding: 12px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.03);
}

.media-thumb {
  border-radius: 16px;
  min-height: 96px;
  background:
    linear-gradient(135deg, rgba(126, 192, 255, 0.28), rgba(52, 92, 130, 0.5)),
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.18), transparent 30%);
}

.media-lines {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
}

.media-lines span {
  display: block;
  height: 10px;
  border-radius: 999px;
  background: rgba(214, 228, 241, 0.12);
}

.media-lines span:first-child {
  width: 90%;
}

.media-lines span:last-child {
  width: 66%;
}

.stat-value,
.feature-icon,
.platform-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--success);
  background: rgba(122, 186, 255, 0.08);
  font-size: 0.88rem;
  font-weight: 800;
}

.feature-icon {
  margin-bottom: 18px;
}

.platform-label {
  margin-bottom: 16px;
}

.muted {
  color: rgba(220, 230, 240, 0.68);
}

.section-heading {
  max-width: 700px;
  margin-bottom: 24px;
}

.features,
.platforms {
  padding: 40px 0;
}

.feature-grid,
.platform-grid {
  display: grid;
  gap: 18px;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.platform-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.platform-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
  padding: 28px;
  border-radius: 30px;
}

.accent-card,
.platform-card-primary {
  background:
    linear-gradient(180deg, rgba(38, 59, 81, 0.98), rgba(16, 28, 40, 0.96));
  border-color: var(--line-strong);
}

.footer-card {
  border-radius: 34px;
  padding: 34px;
}

.footer {
  padding: 32px 0 44px;
}

.footer-card {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.footer-card p a {
  color: var(--success);
}

.footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-meta {
  margin: 16px 0 0;
  color: rgba(182, 197, 212, 0.72);
  text-align: center;
  line-height: 1.5;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 620ms ease,
    transform 620ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 500px;
  }

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

  .footer-card {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 780px) {
  .topbar {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
  }

  .hero {
    gap: 24px;
    padding-top: 24px;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.9rem, 12vw, 4.2rem);
  }

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

  .hero-visual {
    min-height: 420px;
  }

  .device-frame {
    position: relative;
    inset: 0;
    min-height: 420px;
  }

  .bubble {
    max-width: 90%;
  }
}

@media (max-width: 560px) {
  .topbar,
  .hero,
  .features,
  .platforms,
  .footer {
    width: min(calc(100% - 20px), var(--max-width));
  }

  .topbar {
    gap: 12px;
    padding-top: 16px;
  }

  .brand {
    width: 100%;
    justify-content: center;
  }

  .nav {
    padding: 10px 12px;
    gap: 12px;
    font-size: 0.92rem;
  }

  .button,
  .button-small {
    width: 100%;
  }

  .cta-row {
    flex-direction: column;
  }

  .hero-visual {
    min-height: 360px;
  }

  .device-frame {
    min-height: 360px;
    border-radius: 30px;
    padding: 14px;
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
  }

  .footer-card,
  .feature-card,
  .platform-card {
    padding: 22px;
    border-radius: 24px;
  }

  .hero-text,
  .feature-card p,
  .platform-card p,
  .footer-card p {
    line-height: 1.5;
  }

  .media-card {
    grid-template-columns: 88px 1fr;
    gap: 10px;
  }

  .media-thumb {
    min-height: 76px;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  body.deeplink-mode .hero {
    min-height: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}