:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: #ffffff;
  --ink: #111111;
  --ink-soft: rgba(17, 17, 17, 0.68);
  --line: rgba(17, 17, 17, 0.08);
  --line-strong: rgba(17, 17, 17, 0.14);
  --accent: #3d63ff;
  --accent-soft: rgba(61, 99, 255, 0.14);
  --accent-glow: rgba(77, 113, 255, 0.24);
  --shadow-lg: 0 28px 90px rgba(17, 17, 17, 0.08);
  --shadow-md: 0 18px 48px rgba(17, 17, 17, 0.06);
  --shadow-sm: 0 10px 28px rgba(17, 17, 17, 0.05);
  --radius-xl: 40px;
  --radius-lg: 30px;
  --radius-md: 22px;
  --radius-pill: 999px;
  --font-body: "Aptos", "Segoe UI", "PingFang SC", "Microsoft YaHei UI", sans-serif;
  --font-display: "Segoe UI Variable Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Source Han Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at top center, rgba(61, 99, 255, 0.08), transparent 28%),
    radial-gradient(circle at 15% 18%, rgba(61, 99, 255, 0.07), transparent 22%),
    linear-gradient(180deg, #ffffff 0%, #fbfcff 56%, #ffffff 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(17, 17, 17, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 17, 17, 0.018) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.3), transparent 85%);
}

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

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

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

.landing-shell {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0 42px;
}

.site-header {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 14px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-sm);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 14px;
  background: linear-gradient(180deg, #f7faff 0%, #e2eaff 100%);
  border: 1px solid rgba(61, 99, 255, 0.12);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.96),
    0 10px 22px rgba(61, 99, 255, 0.14);
}

.brand-mark-live {
  animation: brand-breathe 5.5s ease-in-out infinite;
}

.brand-mark-frame,
.brand-mark-core,
.brand-mark-dot {
  position: absolute;
  display: block;
}

.brand-mark-frame {
  inset: 5px;
  border: 1px solid rgba(61, 99, 255, 0.18);
  border-radius: 10px;
}

.brand-mark-core {
  width: 15px;
  height: 15px;
  border: 2.5px solid var(--accent);
  border-radius: 50%;
  transform: translate(-3px, -1px);
}

.brand-mark-core::after {
  content: "";
  position: absolute;
  right: -6px;
  bottom: -3px;
  width: 8px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  transform: rotate(44deg);
}

.brand-mark-dot {
  top: 7px;
  right: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, #95aeff 0%, #3d63ff 100%);
  box-shadow: 0 0 0 5px rgba(61, 99, 255, 0.08);
}

.brand-copy {
  display: grid;
  gap: 2px;
  line-height: 1.03;
}

.brand-copy strong {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand-copy span {
  font-size: 11px;
  color: var(--ink-soft);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-nav a,
.footer-links a {
  font-size: 14px;
  color: var(--ink-soft);
  transition: color 180ms ease;
}

.site-nav a:hover,
.footer-links a:hover {
  color: var(--ink);
}

.hero-section,
.preview-section,
.download-card,
.spotlight-card,
.capability-strip article,
.utility-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-md);
}

.hero-section {
  display: grid;
  justify-items: center;
  gap: 22px;
  padding: 82px 24px 86px;
  border-radius: calc(var(--radius-xl) + 8px);
  text-align: center;
}

.hero-logo {
  position: absolute;
  top: 54px;
  width: 136px;
  height: 136px;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.hero-logo-halo,
.hero-logo-orbit,
.hero-logo-core,
.hero-logo-eye,
.hero-logo-focus {
  position: absolute;
  display: block;
}

.hero-logo-halo {
  inset: 10px;
  border-radius: 38px;
  background:
    radial-gradient(circle at 50% 44%, rgba(135, 164, 255, 0.44), rgba(135, 164, 255, 0.18) 34%, transparent 62%),
    radial-gradient(circle at 50% 64%, rgba(61, 99, 255, 0.34), transparent 56%);
  filter: blur(10px);
  animation: hero-pulse 4.8s ease-in-out infinite;
}

.hero-logo-orbit {
  border: 1px solid rgba(61, 99, 255, 0.18);
  border-radius: 34px;
}

.hero-logo-orbit-one {
  inset: 18px;
  animation: hero-spin 14s linear infinite;
}

.hero-logo-orbit-two {
  inset: 30px;
  border-style: dashed;
  border-color: rgba(61, 99, 255, 0.28);
  animation: hero-spin-reverse 10s linear infinite;
}

.hero-logo-core {
  width: 76px;
  height: 76px;
  border-radius: 26px;
  background: linear-gradient(150deg, #f8fbff 0%, #d9e4ff 52%, #446cff 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.96),
    0 22px 40px rgba(61, 99, 255, 0.22);
  animation: hero-float 4.8s ease-in-out infinite;
}

.hero-logo-eye {
  inset: 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.92);
}

.hero-logo-eye::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 16px;
  width: 20px;
  height: 20px;
  border: 3px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(61, 99, 255, 0.08);
}

.hero-logo-eye::after {
  content: "";
  position: absolute;
  right: 15px;
  bottom: 17px;
  width: 18px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  transform: rotate(44deg);
}

.hero-logo-focus {
  top: 17px;
  right: 16px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, #a7bbff 0%, #3d63ff 100%);
  box-shadow: 0 0 0 7px rgba(61, 99, 255, 0.08);
  animation: hero-focus 3.6s ease-in-out infinite;
}

.hero-badge,
.hero-highlights,
.download-meta,
.download-notes,
.sidecard-chipset,
.utility-actions,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.hero-badge {
  margin-top: 72px;
  padding: 10px 16px;
  border: 1px solid rgba(61, 99, 255, 0.12);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink-soft);
  font-size: 13px;
}

.hero-badge-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: linear-gradient(135deg, #a7bbff 0%, #3d63ff 100%);
  box-shadow: 0 0 0 7px rgba(61, 99, 255, 0.08);
}

.hero-section h1,
.utility-card h1,
.download-card h2,
.preview-copy h2,
.spotlight-card h2 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.hero-section h1 {
  width: min(980px, 100%);
  display: grid;
  justify-items: center;
  gap: 0.02em;
  font-size: clamp(52px, 6.4vw, 88px);
  line-height: 0.98;
  text-wrap: balance;
}

.hero-title span {
  display: block;
  width: max-content;
  max-width: 100%;
  text-align: center;
}

.hero-lede,
.spotlight-card p,
.preview-copy p,
.download-copy,
.sidecard-block strong,
.site-footer p,
.utility-copy,
.utility-note {
  color: var(--ink-soft);
  line-height: 1.72;
}

.hero-lede {
  max-width: 46rem;
  font-size: 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #ffffff;
  background: #111111;
  box-shadow: 0 18px 36px rgba(17, 17, 17, 0.18);
}

.button-secondary {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
}

.hero-button {
  min-width: 228px;
}

.hero-highlights span,
.download-notes span,
.sidecard-chipset span {
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  border: 1px solid rgba(17, 17, 17, 0.07);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.92);
  font-size: 13px;
  color: var(--ink-soft);
}

.spotlight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 26px;
}

.spotlight-card {
  display: grid;
  gap: 18px;
  padding: 22px;
  border-radius: var(--radius-lg);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.spotlight-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-kicker,
.section-kicker,
.sidecard-label {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.spotlight-card h2,
.download-card h2,
.preview-copy h2 {
  font-size: clamp(26px, 2.6vw, 40px);
  line-height: 1.1;
}

.spotlight-ui {
  min-height: 280px;
  padding: 16px;
  border-radius: 28px;
  background:
    radial-gradient(circle at 20% 18%, rgba(255, 255, 255, 0.88), transparent 42%),
    linear-gradient(145deg, #eef3ff 0%, #dbe5ff 52%, #5a74ff 100%);
}

.spotlight-card-2 .spotlight-ui {
  background:
    radial-gradient(circle at 26% 16%, rgba(255, 255, 255, 0.9), transparent 38%),
    linear-gradient(145deg, #edf2ff 0%, #d6e0ff 48%, #4264ff 100%);
}

.spotlight-card-3 .spotlight-ui {
  background:
    radial-gradient(circle at 72% 18%, rgba(255, 255, 255, 0.82), transparent 34%),
    linear-gradient(145deg, #edf2ff 0%, #d3ddff 46%, #3657f4 100%);
}

.mock-window,
.preview-browser,
.preview-sidecard {
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.92);
}

.mock-window {
  display: grid;
  gap: 14px;
  min-height: 248px;
  padding: 18px;
}

.mock-bar,
.browser-bar {
  display: flex;
  gap: 8px;
}

.mock-bar span,
.browser-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(17, 17, 17, 0.16);
}

.mock-search-line,
.mock-toolbar span,
.browser-query,
.sidecard-block,
.mock-list div,
.mock-timeline div,
.mock-stats span {
  border-radius: 18px;
}

.mock-search-line {
  height: 44px;
  background: rgba(17, 17, 17, 0.08);
}

.mock-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mock-chip-row span {
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  background: rgba(61, 99, 255, 0.12);
  color: #3857d7;
  font-size: 12px;
}

.mock-list {
  display: grid;
  gap: 10px;
}

.mock-list div {
  height: 22px;
  background: rgba(17, 17, 17, 0.08);
}

.mock-face-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mock-face-grid span {
  display: block;
  aspect-ratio: 1;
  border-radius: 20px;
  background:
    radial-gradient(circle at 50% 38%, rgba(17, 17, 17, 0.12), transparent 23%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(221, 230, 255, 0.9));
}

.mock-toolbar {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 10px;
}

.mock-toolbar span {
  display: block;
  height: 42px;
  background: rgba(17, 17, 17, 0.08);
}

.mock-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.mock-stats span {
  display: block;
  height: 64px;
  background: rgba(17, 17, 17, 0.08);
}

.mock-timeline {
  display: grid;
  gap: 12px;
}

.mock-timeline div {
  height: 24px;
  background: linear-gradient(90deg, rgba(17, 17, 17, 0.14), rgba(61, 99, 255, 0.5));
}

.preview-section {
  display: grid;
  gap: 26px;
  margin-top: 26px;
  padding: 30px;
  border-radius: var(--radius-xl);
}

.preview-copy {
  max-width: 48rem;
}

.preview-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 18px;
}

.preview-browser {
  display: grid;
  gap: 16px;
  padding: 20px;
}

.browser-query {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 18px;
  background: rgba(17, 17, 17, 0.04);
}

.browser-query strong {
  font-size: 15px;
}

.browser-query span {
  color: var(--ink-soft);
  font-size: 14px;
}

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

.browser-results article,
.sidecard-block {
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
}

.result-tag {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  background: rgba(61, 99, 255, 0.12);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
}

.browser-results strong,
.sidecard-block strong,
.capability-strip strong,
.footer-brand strong {
  display: block;
  font-size: 18px;
  line-height: 1.35;
}

.browser-results p {
  margin-top: 10px;
  color: var(--ink-soft);
  line-height: 1.66;
}

.preview-sidecard {
  display: grid;
  gap: 14px;
  padding: 20px;
}

.sidecard-block strong {
  margin-top: 10px;
}

.capability-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.capability-strip article {
  display: grid;
  gap: 10px;
  padding: 18px;
  border-radius: 24px;
}

.capability-strip span {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.download-section {
  display: flex;
  justify-content: center;
  margin-top: 28px;
}

.download-card {
  width: min(760px, 100%);
  display: grid;
  justify-items: center;
  gap: 18px;
  padding: 32px 26px;
  border-radius: var(--radius-xl);
  text-align: center;
}

.download-copy {
  max-width: 44rem;
}

.download-meta span {
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink-soft);
  font-size: 13px;
}

.site-footer {
  display: grid;
  gap: 14px;
  justify-items: center;
  margin-top: 26px;
  padding: 18px 12px 6px;
  text-align: center;
}

.footer-brand p,
.footer-note {
  font-size: 13px;
  color: rgba(17, 17, 17, 0.48);
}

.utility-page {
  display: grid;
  align-items: center;
}

.utility-card {
  width: min(760px, 100%);
  display: grid;
  gap: 18px;
  margin: 72px auto 0;
  padding: 34px 28px;
  border-radius: var(--radius-xl);
  text-align: center;
}

.utility-card h1 {
  font-size: clamp(42px, 6vw, 66px);
  line-height: 0.98;
}

.utility-copy {
  max-width: 42rem;
  margin: 0 auto;
}

.utility-note {
  font-size: 13px;
  color: rgba(17, 17, 17, 0.48);
}

@keyframes brand-breathe {
  0%,
  100% {
    transform: translateY(0);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.96),
      0 10px 22px rgba(61, 99, 255, 0.14);
  }

  50% {
    transform: translateY(-1px);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.96),
      0 14px 28px rgba(61, 99, 255, 0.2);
  }
}

@keyframes hero-pulse {
  0%,
  100% {
    transform: scale(0.96);
    opacity: 0.72;
  }

  50% {
    transform: scale(1.06);
    opacity: 1;
  }
}

@keyframes hero-spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes hero-spin-reverse {
  from {
    transform: rotate(360deg);
  }

  to {
    transform: rotate(0deg);
  }
}

@keyframes hero-float {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }
}

@keyframes hero-focus {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.92;
  }

  50% {
    transform: scale(1.22);
    opacity: 1;
  }
}

@media (max-width: 1040px) {
  .spotlight-grid,
  .capability-strip,
  .browser-results {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 840px) {
  .landing-shell {
    width: min(100% - 24px, 100%);
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 28px;
  }

  .site-nav {
    gap: 18px;
    flex-wrap: wrap;
  }

  .hero-section {
    padding: 78px 18px 64px;
  }

  .hero-logo {
    top: 48px;
    width: 122px;
    height: 122px;
  }

  .hero-badge {
    margin-top: 60px;
  }

  .preview-section,
  .download-card,
  .utility-card {
    padding: 24px 20px;
  }

  .spotlight-grid,
  .capability-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body::before {
    background-size: 24px 24px;
  }

  .hero-logo {
    top: 44px;
    width: 108px;
    height: 108px;
  }

  .hero-logo-core {
    width: 64px;
    height: 64px;
  }

  .hero-logo-eye::before {
    left: 14px;
    top: 13px;
    width: 18px;
    height: 18px;
  }

  .hero-logo-eye::after {
    right: 12px;
    bottom: 14px;
    width: 16px;
  }

  .hero-badge {
    margin-top: 50px;
  }

  .hero-section h1 {
    max-width: 100%;
    font-size: 42px;
    line-height: 1.02;
  }

  .hero-badge,
  .hero-highlights,
  .download-meta,
  .download-notes,
  .sidecard-chipset,
  .utility-actions,
  .footer-links {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button,
  .site-nav a {
    width: 100%;
  }

  .browser-query,
  .browser-results {
    grid-template-columns: 1fr;
  }

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

  .utility-card h1 {
    font-size: 42px;
  }
}