:root {
  --bg: #07111f;
  --bg-soft: #0f1c2f;
  --panel: rgba(11, 24, 43, 0.72);
  --panel-strong: rgba(11, 24, 43, 0.92);
  --line: rgba(255, 255, 255, 0.1);
  --text: #f5f7fb;
  --muted: rgba(232, 238, 248, 0.7);
  --accent: #62d0ff;
  --accent-2: #ff7f96;
  --accent-3: #85f0bf;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --radius-xl: 36px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --content-width: min(1200px, calc(100vw - 48px));
  --display-font: "Outfit", "MiSans", "HarmonyOS Sans SC", "PingFang SC", sans-serif;
  --body-font: "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Helvetica Neue", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: var(--body-font);
  background:
    radial-gradient(circle at 20% 20%, rgba(98, 208, 255, 0.16), transparent 34%),
    radial-gradient(circle at 82% 18%, rgba(255, 127, 150, 0.2), transparent 30%),
    radial-gradient(circle at 50% 80%, rgba(133, 240, 191, 0.12), transparent 26%),
    linear-gradient(180deg, #06101d 0%, #091423 52%, #050b13 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.04), transparent 28%),
    linear-gradient(300deg, rgba(255, 255, 255, 0.03), transparent 32%);
  mix-blend-mode: screen;
}

img {
  display: block;
  max-width: 100%;
}

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

button {
  font: inherit;
  border: 0;
}

.site-shell {
  position: relative;
  overflow: clip;
}

.topbar,
.hero,
.platform-strip,
.showcase,
.feature-lab,
.story-band,
.downloads,
.footer {
  width: var(--content-width);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0 10px;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--display-font);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 16px 35px rgba(0, 0, 0, 0.3);
}

.nav {
  display: inline-flex;
  gap: 20px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(7, 16, 29, 0.56);
}

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

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  align-items: center;
  gap: 48px;
  min-height: calc(100vh - 84px);
  padding: 64px 0 72px;
}

.eyebrow,
.label {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.story-copy h2 {
  margin: 0;
  font-family: var(--display-font);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.hero h1 {
  font-size: clamp(2.9rem, 5.5vw, 5.7rem);
  line-height: 0.95;
}

.hero-text,
.showcase-copy p,
.download-copy p,
.feature-preview-copy p,
.platform-grid p,
.story-metrics span {
  color: var(--muted);
  line-height: 1.75;
}

.hero-text {
  max-width: 640px;
  margin: 24px 0 0;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 24px;
}

.button,
.download-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:hover,
.download-chip:hover,
.feature-item:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), #98f8ff);
  color: #04111d;
  font-weight: 700;
  box-shadow: 0 20px 40px rgba(98, 208, 255, 0.24);
}

.button.ghost,
.download-chip {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.download-chip {
  cursor: pointer;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-tags li {
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: rgba(244, 247, 251, 0.92);
  font-size: 0.92rem;
}

.hero-stage {
  position: relative;
  height: min(820px, 70vw);
  min-height: 560px;
}

.device {
  position: absolute;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 30px;
  box-shadow: var(--shadow);
  background: rgba(255, 255, 255, 0.04);
}

.desktop-device {
  right: 0;
  top: 20px;
  width: min(720px, 100%);
  transform: rotate(-5deg);
}

.phone-device {
  width: 210px;
  border-radius: 34px;
}

.phone-left {
  left: 30px;
  bottom: 80px;
  transform: rotate(-11deg);
}

.phone-right {
  right: 40px;
  bottom: 10px;
  transform: rotate(8deg);
}

.floating-note {
  position: absolute;
  padding: 12px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  background: rgba(8, 18, 33, 0.72);
  backdrop-filter: blur(18px);
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.94rem;
  letter-spacing: 0.03em;
}

.note-a {
  top: 24px;
  left: 0;
}

.note-b {
  right: 36px;
  top: 140px;
}

.note-c {
  left: 110px;
  bottom: 8px;
}

.platform-strip,
.showcase,
.feature-lab,
.story-band,
.downloads {
  padding: 84px 0;
}

.section-heading {
  display: grid;
  gap: 14px;
  margin-bottom: 34px;
}

.section-heading h2,
.story-copy h2 {
  font-size: clamp(2rem, 3.8vw, 3.5rem);
  line-height: 1.02;
  max-width: 820px;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.story-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.platform-grid article,
.story-metrics div {
  min-height: 210px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 100%),
    var(--panel);
  backdrop-filter: blur(18px);
}

.platform-grid span,
.story-metrics strong {
  display: block;
  margin-bottom: 12px;
  font-family: var(--display-font);
  font-size: 1.35rem;
  font-weight: 700;
}

.platform-grid h3,
.showcase-copy h3,
.feature-preview-copy h3 {
  margin: 0 0 12px;
  font-family: var(--display-font);
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  line-height: 1.1;
}

.showcase {
  display: grid;
  gap: 34px;
}

.showcase-block {
  display: grid;
  gap: 28px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 100%),
    var(--panel);
  backdrop-filter: blur(18px);
}

.mobile-block {
  grid-template-columns: 360px minmax(0, 1fr);
  align-items: start;
}

.desktop-block {
  grid-template-columns: 1fr;
  align-items: start;
}

.desktop-block .showcase-copy {
  max-width: 760px;
}

.phone-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-flow: dense;
  gap: 18px;
}

.phone-shot,
.desktop-shot {
  margin: 0;
  overflow: hidden;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

.phone-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phone-shot.tall {
  grid-row: span 2;
}

.desktop-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.desktop-shot.wide {
  grid-column: span 2;
  aspect-ratio: 16 / 9;
}

.desktop-shot:not(.wide) {
  aspect-ratio: 16 / 10;
}

.desktop-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-lab-grid {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.feature-list {
  display: grid;
  gap: 12px;
}

.feature-item {
  display: grid;
  gap: 6px;
  justify-items: start;
  padding: 22px 22px 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.feature-item span {
  color: var(--accent);
  font-size: 0.86rem;
  letter-spacing: 0.12em;
}

.feature-item strong {
  font-size: 1.08rem;
  line-height: 1.35;
}

.feature-item.is-active {
  border-color: rgba(98, 208, 255, 0.45);
  background: linear-gradient(135deg, rgba(98, 208, 255, 0.16), rgba(255, 127, 150, 0.08));
}

.feature-preview {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(280px, 0.8fr);
  gap: 24px;
  align-items: center;
  min-height: 580px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 100%),
    var(--panel-strong);
}

.feature-preview-media {
  overflow: hidden;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.03);
  box-shadow: var(--shadow);
}

.feature-preview-media img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
  transition: transform 260ms ease, opacity 220ms ease;
}

.feature-points {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.feature-points li {
  padding-left: 18px;
  position: relative;
  color: rgba(244, 247, 251, 0.92);
}

.feature-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.story-band {
  display: grid;
  gap: 26px;
}

.story-metrics strong {
  margin-bottom: 18px;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
}

.download-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.download-buttons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.contact-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.contact-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 8, 16, 0.7);
  backdrop-filter: blur(10px);
}

.contact-panel {
  position: relative;
  z-index: 1;
  width: min(560px, calc(100vw - 32px));
  padding: 30px 28px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 100%),
    rgba(8, 18, 33, 0.94);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
}

.contact-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  cursor: pointer;
}

.contact-panel h3 {
  margin: 0 0 14px;
  font-family: var(--display-font);
  font-size: clamp(1.6rem, 2.6vw, 2rem);
  line-height: 1.1;
}

.contact-text {
  margin: 0 0 10px;
  color: var(--muted);
  line-height: 1.8;
}

.contact-actions {
  display: flex;
  justify-content: flex-start;
  margin-top: 20px;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 26px 0 50px;
  color: rgba(232, 238, 248, 0.6);
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

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

@media (max-width: 1180px) {
  .hero,
  .mobile-block,
  .desktop-block,
  .feature-lab-grid,
  .download-layout {
    grid-template-columns: 1fr;
  }

  .hero-stage {
    height: 640px;
  }

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

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

@media (max-width: 860px) {
  :root {
    --content-width: min(100vw - 24px, 760px);
  }

  .topbar {
    flex-direction: column;
    gap: 14px;
    padding-top: 14px;
  }

  .nav {
    width: 100%;
    justify-content: center;
    gap: 18px;
  }

  .hero {
    min-height: auto;
    padding-top: 38px;
  }

  .hero-stage {
    height: 520px;
    min-height: 520px;
  }

  .desktop-device {
    width: 100%;
    transform: none;
  }

  .phone-device {
    width: 160px;
  }

  .phone-left {
    left: 8px;
    bottom: 24px;
  }

  .phone-right {
    right: 8px;
    bottom: -6px;
  }

  .note-b {
    right: 0;
  }

  .phone-gallery,
  .desktop-gallery,
  .download-buttons {
    grid-template-columns: 1fr;
  }

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

  .showcase-block,
  .feature-preview,
  .platform-grid article,
  .story-metrics div {
    padding: 22px;
  }

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