:root {
  color-scheme: light;
  --bg: #f7f5ee;
  --paper: #fffef8;
  --ink: #111111;
  --muted: #5f5a50;
  --line: #171717;
  --soft-line: rgba(17, 17, 17, 0.14);
  --yellow: #ffe45c;
  --purple: #8b5cf6;
  --cyan: #41d6ff;
  --green: #b8f35a;
  --black: #090909;
  --radius: 14px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 84px;
  padding: 10px clamp(18px, 4vw, 56px);
  background: rgba(247, 245, 238, 0.86);
  border-bottom: 1px solid var(--soft-line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: clamp(220px, 22vw, 340px);
  min-width: 220px;
}

.brand img {
  width: 100%;
  max-height: 68px;
  object-fit: contain;
  object-position: left center;
  mix-blend-mode: multiply;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 28px);
  font-size: 14px;
  font-weight: 720;
}

.site-nav a {
  padding: 8px 0;
  color: #2c2a27;
  transition:
    color 160ms ease,
    transform 160ms ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--purple);
  transform: translateY(-1px);
}

.nav-cta {
  padding: 9px 14px !important;
  color: #fff !important;
  background: var(--black);
  border-radius: 999px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 17px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero,
.page-hero {
  position: relative;
  overflow: hidden;
}

.replicate-hero {
  min-height: calc(100vh - 84px);
  padding: clamp(58px, 8vw, 104px) clamp(18px, 4vw, 56px) 30px;
}

.replicate-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(circle at 66% 58%, rgba(255, 228, 92, 0.18), transparent 19rem),
    radial-gradient(circle at 83% 48%, rgba(139, 92, 246, 0.16), transparent 22rem),
    #f7f5ee;
}

.grid-plane {
  position: absolute;
  inset: -1px;
  background-image:
    linear-gradient(rgba(17, 17, 17, 0.065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 17, 17, 0.065) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
}

.grid-plane::before,
.grid-plane::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(115deg, transparent 0 38%, rgba(255, 255, 255, 0.55) 45%, transparent 54%),
    linear-gradient(25deg, transparent 0 48%, rgba(65, 214, 255, 0.22) 52%, transparent 62%);
  animation: sheenMove 13s ease-in-out infinite;
}

.grid-plane::after {
  animation-delay: -6s;
  opacity: 0.72;
  transform: rotate(180deg);
}

.mesh {
  position: absolute;
  width: 38vw;
  min-width: 360px;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(26px);
  opacity: 0.82;
  mix-blend-mode: multiply;
  animation: floatMesh 14s ease-in-out infinite;
}

.mesh-a {
  right: 15vw;
  top: 6vh;
  background: radial-gradient(circle, rgba(255, 228, 92, 0.95), transparent 67%);
}

.mesh-b {
  right: -3vw;
  bottom: 0;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.82), transparent 66%);
  animation-delay: -5s;
}

.mesh-c {
  left: 45vw;
  top: 31vh;
  background: radial-gradient(circle, rgba(65, 214, 255, 0.8), transparent 68%);
  animation-delay: -8s;
}

.mesh-d {
  left: 61vw;
  top: 16vh;
  width: 28vw;
  min-width: 260px;
  background: radial-gradient(circle, rgba(184, 243, 90, 0.45), transparent 70%);
  animation-delay: -11s;
}

.hero-inner,
.section-inner {
  position: relative;
  z-index: 2;
  width: min(1240px, 100%);
  margin: 0 auto;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(360px, 0.82fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.hero-label,
.section-label {
  margin: 0 0 18px;
  color: var(--purple);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(64px, 10vw, 142px);
  line-height: 0.9;
  letter-spacing: 0;
}

h1 span {
  display: block;
  white-space: nowrap;
}

h1 em {
  font-style: normal;
}

.title-dun {
  color: var(--yellow);
  text-shadow:
    -1px -1px 0 var(--black),
    1px -1px 0 var(--black),
    -1px 1px 0 var(--black),
    1px 1px 0 var(--black),
    8px 8px 0 rgba(139, 92, 246, 0.26);
}

.title-link {
  color: var(--purple);
  text-shadow:
    -1px -1px 0 var(--black),
    1px -1px 0 var(--black),
    -1px 1px 0 var(--black),
    1px 1px 0 var(--black),
    8px 8px 0 rgba(65, 214, 255, 0.32);
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(38px, 6vw, 78px);
  line-height: 0.98;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 27px;
  line-height: 1.15;
}

p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.72;
}

.hero-lede {
  max-width: 740px;
  margin-bottom: 30px;
  color: #2f2d29;
  font-size: clamp(18px, 1.6vw, 23px);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 850;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 0 var(--black);
}

.button.primary {
  color: var(--black);
  background: var(--yellow);
}

.button.ghost {
  background: rgba(255, 255, 255, 0.7);
}

.code-stage {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #101010;
  box-shadow: 18px 18px 0 rgba(17, 17, 17, 0.16);
  overflow: hidden;
}

.code-stage::before {
  position: absolute;
  inset: -1px;
  content: "";
  background: linear-gradient(120deg, rgba(255, 228, 92, 0.24), transparent 34%, rgba(65, 214, 255, 0.24));
  pointer-events: none;
}

.code-tabs {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 8px;
  padding: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.code-tabs span {
  padding: 8px 10px;
  color: #bfbfbf;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 760;
}

.code-tabs .active {
  color: #101010;
  background: var(--cyan);
}

pre {
  position: relative;
  z-index: 2;
  margin: 0;
  padding: clamp(20px, 3vw, 30px);
  overflow-x: auto;
  color: #f6f1e6;
  font-size: clamp(13px, 1.2vw, 16px);
  line-height: 1.75;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.muted {
  color: #8f8f8f;
}

.string {
  color: var(--yellow);
}

.function {
  color: var(--cyan);
}

.code-result {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  color: #f7f5ee;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 14px;
  font-weight: 780;
}

.code-result span {
  width: 10px;
  aspect-ratio: 1;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 18px var(--green);
}

.model-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--black);
  overflow: hidden;
}

.strip-track {
  display: flex;
  width: max-content;
  gap: 10px;
  padding: 14px 0;
  animation: marquee 26s linear infinite;
}

.strip-track span {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  padding: 0 18px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 820;
  white-space: nowrap;
}

.section {
  padding: clamp(70px, 9vw, 118px) clamp(18px, 4vw, 56px);
}

.intro-band {
  background: #fffef8;
  border-bottom: 1px solid var(--soft-line);
}

.split,
.contact-layout,
.case-layout,
.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(320px, 0.76fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.rich-copy p:last-child,
.contact-card span:last-child {
  margin-bottom: 0;
}

.section-heading {
  max-width: 870px;
  margin-bottom: 34px;
}

.section-heading.compact {
  max-width: 980px;
}

.model-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.model-card,
.feature-card,
.contact-card,
.api-steps,
.process-list li {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fffef8;
}

.model-card,
.feature-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 360px;
  padding: 24px;
  overflow: hidden;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease;
}

.model-card::before,
.feature-card::before {
  position: absolute;
  inset: auto 18px 18px auto;
  width: 120px;
  aspect-ratio: 1;
  content: "";
  border-radius: 50%;
  filter: blur(10px);
  opacity: 0.85;
}

.model-card.yellow::before,
.feature-card:nth-child(1)::before {
  background: var(--yellow);
}

.model-card.purple::before,
.feature-card:nth-child(2)::before {
  background: var(--purple);
}

.model-card.cyan::before,
.feature-card:nth-child(3)::before {
  background: var(--cyan);
}

.model-card:hover,
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 12px 12px 0 var(--black);
}

.model-card small,
.feature-card span,
.process-list span {
  color: var(--purple);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.model-card h3,
.model-card p,
.model-card span,
.feature-card h3,
.feature-card p {
  position: relative;
  z-index: 2;
}

.model-card p,
.feature-card p,
.process-list p {
  font-size: 16px;
}

.model-card span {
  margin-top: auto;
  color: var(--black);
  font-weight: 900;
}

.dark-panel {
  color: #fffef8;
  background:
    radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.38), transparent 28rem),
    radial-gradient(circle at 82% 24%, rgba(65, 214, 255, 0.22), transparent 30rem),
    #0a0a0a;
}

.dark-panel p,
.dark-panel .section-label {
  color: #d7d0c2;
}

.dark-panel .button.primary {
  color: var(--black);
  background: var(--cyan);
}

.api-steps {
  display: grid;
  gap: 0;
  padding: 8px;
  color: var(--black);
  background: #fffef8;
}

.api-steps div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
  border-bottom: 1px solid var(--soft-line);
  font-weight: 820;
}

.api-steps div:last-child {
  border-bottom: 0;
}

.api-steps span {
  color: var(--purple);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.process-list li {
  min-height: 260px;
  padding: 22px;
}

.process-list span {
  display: block;
  margin-bottom: 58px;
}

.contact-section {
  background: #fffef8;
  border-top: 1px solid var(--soft-line);
}

.contact-card {
  display: grid;
  gap: 16px;
  padding: 28px;
  font-style: normal;
}

.contact-card strong {
  font-size: clamp(24px, 3vw, 34px);
}

.contact-card a {
  color: var(--purple);
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 950;
}

.contact-card span {
  color: var(--muted);
  line-height: 1.7;
}

.page-hero {
  padding: clamp(70px, 10vw, 130px) clamp(18px, 4vw, 56px) clamp(56px, 8vw, 92px);
  background:
    radial-gradient(circle at 78% 20%, rgba(255, 228, 92, 0.74), transparent 22rem),
    radial-gradient(circle at 90% 72%, rgba(65, 214, 255, 0.45), transparent 24rem),
    var(--bg);
  border-bottom: 1px solid var(--line);
}

.page-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(17, 17, 17, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 17, 17, 0.07) 1px, transparent 1px);
  background-size: 44px 44px;
}

.page-hero .motion-field {
  display: none;
}

.page-hero h1 {
  max-width: 980px;
  font-size: clamp(54px, 8vw, 108px);
}

.page-hero p {
  max-width: 820px;
  color: #2f2d29;
  font-size: clamp(18px, 1.8vw, 23px);
}

.stack-list {
  display: grid;
  gap: 0;
  padding: 0;
  margin: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.stack-list li {
  padding: 18px 0;
  color: #2f2d29;
  border-bottom: 1px solid var(--line);
  font-size: 18px;
  line-height: 1.65;
}

.notice {
  padding: 24px;
  color: var(--black);
  background: var(--yellow);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  line-height: 1.75;
  font-weight: 760;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(18px, 4vw, 56px);
  color: #fff;
  background: var(--black);
  font-size: 14px;
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@keyframes floatMesh {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1) rotate(0deg);
  }
  50% {
    transform: translate3d(-6vw, 4vh, 0) scale(1.15) rotate(10deg);
  }
}

@keyframes sheenMove {
  0%,
  100% {
    transform: translateX(-18%) translateY(-6%) scale(1.05);
    opacity: 0.45;
  }
  50% {
    transform: translateX(18%) translateY(5%) scale(1.12);
    opacity: 0.85;
  }
}

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

@media (max-width: 980px) {
  .hero-inner,
  .split,
  .contact-layout,
  .case-layout,
  .page-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .site-header {
    min-height: 76px;
  }

  .brand {
    width: 190px;
    min-width: 190px;
  }

  .brand img {
    max-height: 58px;
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 76px 12px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    background: rgba(247, 245, 238, 0.98);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 8px 8px 0 var(--black);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 14px 8px;
    border-bottom: 1px solid var(--soft-line);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

  .nav-cta {
    margin-top: 8px;
    text-align: center;
  }

  .replicate-hero {
    min-height: auto;
    padding-top: 48px;
  }

  h1 {
    font-size: clamp(52px, 18vw, 78px);
  }

  h2 {
    font-size: clamp(36px, 12vw, 56px);
  }

  .model-grid,
  .feature-grid,
  .process-list {
    grid-template-columns: 1fr;
  }

  .code-stage {
    box-shadow: 8px 8px 0 rgba(17, 17, 17, 0.18);
  }

  .model-card,
  .feature-card,
  .process-list li {
    min-height: auto;
  }

  .site-footer {
    flex-direction: column;
  }
}