:root {
  --bg: #0a0a0a;
  --bg-elevated: #111111;
  --ink: #f4f1ea;
  --muted: #9a958c;
  --line: rgba(244, 241, 234, 0.1);
  --accent: #d4b483;
  --accent-soft: rgba(212, 180, 131, 0.14);
  --font-display: "Instrument Serif", "Noto Sans SC", serif;
  --font-ui: "Sora", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Sora", sans-serif;
  --max: 1080px;
  --pad: clamp(1.25rem, 4vw, 3rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-weight: 300;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(1200px 700px at 50% -10%, rgba(212, 180, 131, 0.09), transparent 55%),
    radial-gradient(900px 600px at 90% 20%, rgba(90, 110, 130, 0.08), transparent 50%),
    linear-gradient(180deg, #0c0c0c, #080808 40%, #050505);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: drift 18s ease-in-out infinite;
}

.orb-a {
  width: min(55vw, 520px);
  height: min(55vw, 520px);
  top: -8%;
  left: 20%;
  background: radial-gradient(circle, rgba(212, 180, 131, 0.35), transparent 70%);
}

.orb-b {
  width: min(40vw, 380px);
  height: min(40vw, 380px);
  top: 35%;
  right: -5%;
  background: radial-gradient(circle, rgba(120, 140, 160, 0.22), transparent 70%);
  animation-delay: -6s;
  animation-duration: 22s;
}

.orb-c {
  width: min(45vw, 420px);
  height: min(45vw, 420px);
  bottom: 5%;
  left: -8%;
  background: radial-gradient(circle, rgba(180, 150, 120, 0.12), transparent 70%);
  animation-delay: -12s;
  animation-duration: 26s;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px;
  mix-blend-mode: overlay;
}

.topbar,
main,
.footer {
  position: relative;
  z-index: 1;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem var(--pad);
  backdrop-filter: blur(0px);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease;
}

.topbar.is-scrolled {
  background: rgba(10, 10, 10, 0.72);
  border-bottom-color: var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  object-fit: contain;
}

.nav {
  display: flex;
  gap: 1.6rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
}

.lang-btn {
  appearance: none;
  border: 0;
  margin: 0;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.lang-btn:hover {
  color: var(--ink);
}

.lang-btn.is-active {
  background: rgba(244, 241, 234, 0.1);
  color: var(--ink);
}

.nav a,
.nav-cta,
.footer a {
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 400;
  transition: color 0.25s ease;
}

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

.nav-cta {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.hero {
  min-height: calc(100vh - 72px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 4rem var(--pad) 6rem;
  max-width: 920px;
  margin: 0 auto;
}

.hero-brand {
  margin: 0 0 1.4rem;
  font-family: var(--font-ui);
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.hero h1 {
  margin: 0 0 1.4rem;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.6rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.hero h1 em {
  font-style: italic;
  color: rgba(244, 241, 234, 0.72);
}

.hero-lead {
  margin: 0 auto 2.2rem;
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.05rem;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 500;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

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

.btn-primary {
  background: var(--ink);
  color: #111;
}

.btn-primary:hover {
  background: #fff;
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.02);
}

.btn-ghost:hover {
  border-color: rgba(244, 241, 234, 0.28);
  background: rgba(255, 255, 255, 0.05);
}

.section {
  padding: 6.5rem var(--pad);
  max-width: var(--max);
  margin: 0 auto;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 3rem;
}

.eyebrow {
  margin: 0 0 0.85rem;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.section h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-lead,
.product article p,
.cap-list p,
.scene-grid p,
.flow-list p,
.contact-panel p,
.price-note,
.price-features {
  margin: 0;
  color: var(--muted);
  font-weight: 300;
}

.section-lead {
  max-width: 36rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.split article {
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}

.split article:first-child {
  padding-right: 2rem;
  border-right: 1px solid var(--line);
}

.split article:last-child {
  padding-left: 2rem;
}

.split h3,
.cap-list h3,
.scene-grid h3,
.flow-list h3 {
  margin: 0 0 0.65rem;
  font-family: var(--font-ui);
  font-size: 1.05rem;
  font-weight: 500;
}

.cap-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.cap-list li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.cap-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.cap-list span {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  padding-top: 0.15rem;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.scene-grid article {
  padding-top: 1.1rem;
  border-top: 1px solid rgba(212, 180, 131, 0.35);
}

.flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
}

.flow-list strong {
  display: block;
  margin-bottom: 0.85rem;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.contact {
  padding-bottom: 5rem;
}

.contact-panel {
  padding: 3.5rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.contact-panel h2 {
  margin-bottom: 0.85rem;
}

.contact-panel p {
  margin-bottom: 1.8rem;
  max-width: 28rem;
}

.footer {
  padding: 1.5rem var(--pad) 2.5rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
}

.footer-note {
  margin: 0.85rem 0 0;
}

.footer-note a {
  color: rgba(154, 149, 140, 0.8);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  filter: blur(5px);
  transition:
    opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.9s cubic-bezier(0.22, 1, 0.36, 1),
    filter 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
  filter: none;
}

.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }

@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(2%, -3%) scale(1.05); }
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .topbar-actions {
    gap: 0.55rem;
  }

  .nav-cta {
    display: none;
  }

  .split,
  .scene-grid,
  .flow-list {
    grid-template-columns: 1fr;
  }

  .split article:first-child {
    padding-right: 0;
    border-right: none;
  }

  .split article:last-child {
    padding-left: 0;
  }

  .hero {
    min-height: auto;
    padding-top: 5rem;
    padding-bottom: 4rem;
    align-items: flex-start;
    text-align: left;
  }

  .hero-lead {
    margin-left: 0;
  }

  .hero-actions {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .orb { animation: none; }
  .reveal {
    opacity: 1;
    transform: none;
    filter: none;
  }
}