:root {
  --bg: #060606;
  --bg-soft: #0f1012;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.08);
  --text: #f4ecde;
  --muted: rgba(244, 236, 222, 0.72);
  --accent: #ffb854;
  --accent-strong: #ff8a3d;
  --cold: #83a8c9;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
  --max-width: 1180px;
  --radius-xl: 34px;
  --radius-lg: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 12%, rgba(255, 184, 84, 0.18), transparent 24%),
    radial-gradient(circle at 82% 18%, rgba(131, 168, 201, 0.18), transparent 24%),
    linear-gradient(180deg, #040404 0%, #090909 48%, #050505 100%);
}

a,
button {
  color: inherit;
}

a {
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.page-shell {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
}

.background-orb,
.grid-glow {
  position: absolute;
  pointer-events: none;
}

.background-orb {
  width: 44vw;
  height: 44vw;
  min-width: 280px;
  min-height: 280px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.7;
  animation: floatOrb 14s ease-in-out infinite;
}

.background-orb-left {
  top: 4%;
  left: -10%;
  background: rgba(255, 184, 84, 0.18);
}

.background-orb-right {
  top: 30%;
  right: -10%;
  background: rgba(131, 168, 201, 0.16);
  animation-delay: -6s;
}

.grid-glow {
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at center, black 44%, transparent 100%);
  opacity: 0.24;
}

.topbar,
.hero,
.ticker,
.section,
.download,
.footer {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 0 26px rgba(255, 184, 84, 0.65);
}

.brand-name {
  font-family: "Syne", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
}

.nav {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
}

.lang-switch,
.button,
.platform-card,
.principle-card,
.download-box {
  border: 1px solid var(--line);
}

.lang-switch {
  min-width: 56px;
  padding: 12px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 42px;
  align-items: center;
  padding: 72px 0 28px;
}

.eyebrow {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #ffdca5;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.hero h1,
.section h2,
.download h2 {
  margin: 18px 0 16px;
  font-family: "Syne", sans-serif;
  letter-spacing: -0.05em;
  line-height: 0.96;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 6.8rem);
  max-width: 10ch;
}

.hero-text,
.section p,
.principle-card p,
.download-box p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.hero-actions,
.download-actions,
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 14px 22px;
  border-radius: 999px;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.button:hover,
.button:focus-visible,
.lang-switch:hover,
.lang-switch:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #18120c;
  font-weight: 700;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.04);
}

.hero-meta {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}

.hero-meta li {
  padding: 11px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.visualizer-shell {
  position: relative;
  width: min(100%, 660px);
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
}

.visualizer-halo,
.visualizer-wave {
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.visualizer-halo {
  background:
    radial-gradient(circle, rgba(255, 184, 84, 0.34) 0%, rgba(255, 184, 84, 0.08) 34%, rgba(131, 168, 201, 0.08) 54%, transparent 74%);
  filter: blur(10px);
  animation: pulseHalo 6s ease-in-out infinite;
}

.visualizer-center {
  position: relative;
  width: 76%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.03) 60%, rgba(0, 0, 0, 0.1) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.visualizer-label {
  position: absolute;
  top: 8%;
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: calc(100% - 64px);
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(7, 7, 8, 0.38);
  backdrop-filter: blur(12px);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  line-height: 1;
  white-space: nowrap;
  color: #ffe1b4;
  text-align: center;
  pointer-events: none;
}

.visualizer-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.visualizer-wave {
  border: 1px solid rgba(255, 255, 255, 0.05);
  animation: waveSpin 18s linear infinite;
}

.visualizer-wave-a {
  inset: 10%;
}

.visualizer-wave-b {
  inset: 2%;
  animation-direction: reverse;
  animation-duration: 24s;
}

.ticker {
  overflow: hidden;
  padding-top: 12px;
}

.ticker-track {
  display: flex;
  gap: 22px;
  width: max-content;
  font-size: 0.88rem;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.42);
  animation: marquee 20s linear infinite;
}

.section {
  padding: 96px 0 0;
}

.section-heading {
  max-width: 840px;
}

.section-heading.compact {
  max-width: 720px;
}

.section-heading h2,
.download h2 {
  font-size: clamp(2.2rem, 5vw, 4.8rem);
}

.platform-grid,
.principles-grid {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.platform-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.platform-card,
.principle-card,
.download-box {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03)),
    rgba(10, 10, 10, 0.74);
  box-shadow: var(--shadow);
}

.platform-card {
  min-height: 150px;
  display: grid;
  place-items: center;
  font-family: "Syne", sans-serif;
  font-size: clamp(1.5rem, 2vw, 2rem);
  letter-spacing: -0.04em;
}

.platform-card::before,
.principle-card::before,
.download-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(255, 184, 84, 0.12), transparent 34%);
  pointer-events: none;
}

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

.principle-card {
  min-height: 280px;
  padding: 30px;
}

.principle-number {
  display: inline-block;
  margin-bottom: 22px;
  color: var(--accent);
  font-family: "Syne", sans-serif;
  font-size: 1.2rem;
}

.principle-card h3 {
  margin: 0 0 12px;
  font-size: 1.7rem;
}

.download {
  padding-bottom: 80px;
}

.download-box {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding: 32px;
}

.download-actions {
  align-items: center;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 30px;
  color: rgba(244, 236, 222, 0.5);
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

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

@keyframes floatOrb {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }

  50% {
    transform: translate3d(0, 30px, 0) scale(1.06);
  }
}

@keyframes waveSpin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulseHalo {
  0%,
  100% {
    transform: scale(0.96);
    opacity: 0.75;
  }

  50% {
    transform: scale(1.02);
    opacity: 1;
  }
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

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

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

  .principles-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .topbar {
    flex-wrap: wrap;
    padding-top: 14px;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 14px;
    font-size: 0.92rem;
  }

  .hero {
    padding-top: 34px;
    gap: 24px;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.6rem, 13vw, 4.4rem);
  }

  .hero-text,
  .section p,
  .principle-card p,
  .download-box p {
    font-size: 1rem;
    line-height: 1.68;
  }

  .section {
    padding-top: 72px;
  }

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

  .platform-card {
    min-height: 118px;
    font-size: 1.3rem;
  }

  .principle-card {
    min-height: auto;
    padding: 24px;
  }

  .download-box {
    padding: 24px;
  }

  .footer {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .topbar,
  .hero,
  .ticker,
  .section,
  .download,
  .footer {
    width: min(calc(100% - 20px), var(--max-width));
  }

  .nav {
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 2px;
  }

  .button,
  .lang-switch {
    width: 100%;
  }

  .hero-actions,
  .download-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .visualizer-center {
    width: 86%;
  }

  .visualizer-label {
    top: 7%;
    max-width: calc(100% - 32px);
    padding: 7px 12px;
    font-size: 0.68rem;
    letter-spacing: 0.14em;
  }

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

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