:root {
  color-scheme: light;
  --ink-950: #111326;
  --ink-900: #181a32;
  --ink-800: #292b45;
  --ink-700: #454760;
  --ink-600: #63657b;
  --paper: #f7f7fb;
  --surface: rgba(255, 255, 255, 0.76);
  --surface-solid: #ffffff;
  --line: rgba(24, 26, 50, 0.1);
  --violet: #7758ff;
  --violet-deep: #5a3ee8;
  --cyan: #3bc7d4;
  --rose: #f36fa5;
  --amber: #ffb457;
  --success: #2b9c78;
  --shadow-sm: 0 10px 30px rgba(35, 30, 78, 0.08);
  --shadow-md: 0 24px 70px rgba(35, 30, 78, 0.14);
  --radius-sm: 14px;
  --radius-md: 24px;
  --radius-lg: 36px;
  --max-width: 1200px;
  --header-height: 76px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink-950);
  background:
    radial-gradient(circle at 5% 8%, rgba(119, 88, 255, 0.1), transparent 26rem),
    radial-gradient(circle at 96% 34%, rgba(59, 199, 212, 0.1), transparent 28rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  white-space: nowrap;
  border: 0;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 3px solid rgba(119, 88, 255, 0.44);
  outline-offset: 4px;
  border-radius: 8px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 16px;
  color: #fff;
  background: var(--ink-950);
  border-radius: 10px;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(calc(100% - 48px), var(--max-width));
  margin-inline: auto;
}

.section {
  position: relative;
  padding: 112px 0;
}

.section-tight {
  padding: 76px 0;
}

.section-dark {
  color: #fff;
  background:
    radial-gradient(circle at 20% 20%, rgba(119, 88, 255, 0.28), transparent 30rem),
    radial-gradient(circle at 86% 78%, rgba(59, 199, 212, 0.18), transparent 28rem),
    #17182d;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 48px;
}

.section-heading.center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  color: var(--violet-deep);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 8px;
  height: 8px;
  content: "";
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(119, 88, 255, 0.1);
}

.section-dark .eyebrow {
  color: #bcb0ff;
}

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

h1,
h2,
h3 {
  line-height: 1.14;
  letter-spacing: -0.035em;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(3rem, 7vw, 6.4rem);
  font-weight: 780;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2.15rem, 4.5vw, 4rem);
  font-weight: 750;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.3rem;
}

.lead {
  color: var(--ink-600);
  font-size: clamp(1.05rem, 2vw, 1.24rem);
}

.section-dark .lead,
.section-dark .muted {
  color: rgba(255, 255, 255, 0.7);
}

.muted {
  color: var(--ink-600);
}

.gradient-text {
  color: transparent;
  background: linear-gradient(115deg, var(--violet) 8%, #9c5df6 48%, #2db6cb 92%);
  background-clip: text;
  -webkit-background-clip: text;
}

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 100;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  transition:
    background-color 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease,
    backdrop-filter 220ms ease;
}

.site-header.is-scrolled,
.site-header.menu-visible {
  background: rgba(247, 247, 251, 0.82);
  border-color: var(--line);
  box-shadow: 0 8px 28px rgba(31, 29, 65, 0.07);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 1.08rem;
  font-weight: 760;
  letter-spacing: -0.025em;
}

.brand-label-en {
  color: var(--ink-600);
  font-size: 0.7em;
  font-weight: 620;
}

.site-footer .brand-label-en {
  color: rgba(255, 255, 255, 0.62);
}

.brand-mark {
  position: relative;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  overflow: hidden;
  background: linear-gradient(145deg, var(--violet), #9b6cff 55%, var(--cyan));
  border-radius: 11px;
  box-shadow: 0 8px 22px rgba(119, 88, 255, 0.3);
}

.brand-mark::before,
.brand-mark::after {
  width: 8px;
  height: 8px;
  content: "";
  background: #fff;
  border-radius: 50%;
  box-shadow: 10px 0 #fff, 0 10px #fff, 10px 10px rgba(255, 255, 255, 0.52);
}

.brand-mark::after {
  position: absolute;
  inset: 8px auto auto 8px;
  opacity: 0.22;
  transform: scale(2.7);
}

.nav-panel,
.nav-links,
.nav-actions {
  display: flex;
  align-items: center;
}

.nav-panel {
  gap: 28px;
}

.nav-links {
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-flex;
  padding: 9px 12px;
  color: var(--ink-700);
  border-radius: 10px;
  font-size: 0.93rem;
  font-weight: 620;
  transition:
    color 180ms ease,
    background-color 180ms ease;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--ink-950);
  background: rgba(119, 88, 255, 0.08);
}

.nav-actions {
  gap: 12px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 13px;
  cursor: pointer;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  display: block;
  width: 19px;
  height: 2px;
  margin: 4px auto;
  content: "";
  background: var(--ink-950);
  border-radius: 2px;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"]::before {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"]::after {
  transform: translateY(-6px) rotate(-45deg);
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 700;
  line-height: 1.1;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--violet), var(--violet-deep));
  box-shadow: 0 12px 28px rgba(102, 73, 238, 0.28);
}

.button-primary:hover {
  box-shadow: 0 16px 34px rgba(102, 73, 238, 0.36);
}

.button-secondary {
  color: var(--ink-900);
  background: rgba(255, 255, 255, 0.74);
  border-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.button-small {
  min-height: 40px;
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 0.9rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--violet-deep);
  font-weight: 700;
}

.text-link::after {
  content: "→";
  transition: transform 180ms ease;
}

.text-link:hover::after {
  transform: translateX(4px);
}

.hero {
  display: grid;
  min-height: min(920px, 100svh);
  align-items: center;
  padding: calc(var(--header-height) + 74px) 0 82px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(440px, 0.85fr);
  gap: clamp(44px, 5vw, 68px);
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero-copy h1 {
  max-width: 790px;
  font-size: clamp(3rem, 5vw, 4.8rem);
}

.hero-copy .lead {
  max-width: 600px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-600);
  font-size: 0.9rem;
}

.hero-note::before {
  width: 7px;
  height: 7px;
  content: "";
  background: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(43, 156, 120, 0.1);
}

.hero-visual {
  position: relative;
  min-width: 0;
}

.hero-orbit {
  position: absolute;
  inset: -16% -10%;
  z-index: -1;
  background:
    radial-gradient(circle at 35% 35%, rgba(119, 88, 255, 0.32), transparent 36%),
    radial-gradient(circle at 70% 68%, rgba(59, 199, 212, 0.26), transparent 34%);
  filter: blur(22px);
  opacity: 0.8;
}

.product-window {
  position: relative;
  padding: 16px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 30px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transform: rotate(1.2deg);
}

.window-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2px 4px 14px;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots span {
  width: 8px;
  height: 8px;
  background: #d7d5df;
  border-radius: 50%;
}

.window-label {
  color: var(--ink-600);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-stage {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 14px;
  min-height: 468px;
  padding: 14px;
  background: #f0eff7;
  border-radius: 22px;
}

.source-preview,
.pattern-preview {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(33, 31, 61, 0.07);
  border-radius: 17px;
}

.source-preview {
  display: flex;
  min-height: 220px;
  align-items: flex-end;
  justify-content: center;
  padding: 18px;
  background:
    radial-gradient(circle at 50% 26%, rgba(119, 88, 255, 0.18), transparent 27%),
    linear-gradient(160deg, #fff, #ece9fa);
}

.abstract-character {
  position: relative;
  width: 76%;
  aspect-ratio: 0.72;
}

.abstract-character::before {
  position: absolute;
  top: 5%;
  left: 50%;
  width: 43%;
  aspect-ratio: 1;
  content: "";
  background: linear-gradient(145deg, #ffd4bd, #f5a9b9);
  border: 10px solid #282840;
  border-bottom-width: 5px;
  border-radius: 48% 52% 44% 48%;
  transform: translateX(-50%);
  box-shadow: -18px -8px 0 -7px #282840, 20px -5px 0 -8px #282840;
}

.abstract-character::after {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 72%;
  height: 64%;
  content: "";
  background:
    radial-gradient(circle at 50% 38%, #fff 0 8%, transparent 9%),
    linear-gradient(145deg, var(--violet), #5d43dd 60%, #3d2d9b);
  border-radius: 44% 44% 22% 22%;
  transform: translateX(-50%);
  box-shadow: -28px 14px 0 -12px #6546e9, 28px 14px 0 -12px #6546e9;
}

.source-badge,
.result-badge {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  color: var(--ink-700);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  font-size: 0.7rem;
  font-weight: 700;
  backdrop-filter: blur(12px);
}

.source-badge {
  top: 12px;
  left: 12px;
}

.result-badge {
  right: 12px;
  bottom: 12px;
}

.pattern-preview {
  display: grid;
  padding: clamp(18px, 3vw, 32px);
  place-items: center;
  background:
    linear-gradient(rgba(112, 105, 145, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(112, 105, 145, 0.06) 1px, transparent 1px),
    #fbfbfe;
  background-size: 18px 18px;
}

.bead-mockup {
  display: grid;
  width: min(100%, 330px);
  aspect-ratio: 1;
  grid-template-columns: repeat(12, 1fr);
  gap: 3px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.84);
  border-radius: 22px;
  box-shadow: 0 18px 40px rgba(36, 29, 84, 0.12);
  transform: rotate(-2.5deg);
}

.bead-dot {
  aspect-ratio: 1;
  background: var(--bead-color, transparent);
  border-radius: 50%;
  box-shadow:
    inset 0 -1px 2px rgba(0, 0, 0, 0.13),
    inset 0 1px 1px rgba(255, 255, 255, 0.42);
}

.bead-dot.is-empty {
  box-shadow: none;
  opacity: 0;
}

.floating-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  color: var(--ink-800);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  font-size: 0.8rem;
  font-weight: 700;
  backdrop-filter: blur(14px);
}

.floating-chip::before {
  width: 9px;
  height: 9px;
  content: "";
  background: var(--chip-color, var(--violet));
  border-radius: 50%;
}

.chip-top {
  top: 18%;
  right: -7%;
  --chip-color: var(--cyan);
}

.chip-bottom {
  bottom: 10%;
  left: -8%;
  --chip-color: var(--rose);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 20px;
}

.metric-item {
  padding: 25px 20px;
  background: rgba(255, 255, 255, 0.7);
  text-align: center;
}

.metric-item strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1.18rem;
}

.metric-item span {
  color: var(--ink-600);
  font-size: 0.86rem;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  counter-reset: process;
}

.process-card,
.feature-card,
.scenario-card,
.content-card {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.process-card {
  min-height: 245px;
  padding: 28px;
  border-radius: var(--radius-md);
  transition: transform 200ms ease, box-shadow 200ms ease;
  counter-increment: process;
}

.process-card:hover,
.feature-card:hover,
.scenario-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.process-card::after {
  position: absolute;
  right: 24px;
  bottom: 12px;
  color: rgba(119, 88, 255, 0.09);
  content: "0" counter(process);
  font-size: 4.6rem;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.card-icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 38px;
  color: var(--violet-deep);
  background: rgba(119, 88, 255, 0.1);
  border-radius: 15px;
  place-items: center;
}

.card-icon svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.process-card p,
.feature-card p,
.scenario-card p,
.content-card p {
  position: relative;
  z-index: 1;
  margin-bottom: 0;
  color: var(--ink-600);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-card {
  min-height: 260px;
  padding: 34px;
  border-radius: var(--radius-md);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.feature-card::before {
  position: absolute;
  top: -80px;
  right: -70px;
  width: 190px;
  height: 190px;
  content: "";
  background: radial-gradient(circle, var(--feature-glow, rgba(119, 88, 255, 0.18)), transparent 70%);
}

.feature-card:nth-child(2) {
  --feature-glow: rgba(59, 199, 212, 0.2);
}

.feature-card:nth-child(3) {
  --feature-glow: rgba(243, 111, 165, 0.18);
}

.feature-card:nth-child(4) {
  --feature-glow: rgba(255, 180, 87, 0.2);
}

.section-dark .feature-card,
.section-dark .content-card {
  background: rgba(255, 255, 255, 0.075);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}

.section-dark .feature-card p,
.section-dark .content-card p {
  color: rgba(255, 255, 255, 0.68);
}

.section-dark .output-list li,
.section-dark .principle-list li {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.12);
}

.gallery-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}

.gallery-toolbar .section-heading {
  margin-bottom: 0;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-button {
  padding: 9px 14px;
  color: var(--ink-600);
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 700;
}

.filter-button[aria-pressed="true"] {
  color: #fff;
  background: var(--ink-950);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.gallery-card {
  position: relative;
  grid-column: span 4;
  min-height: 420px;
  overflow: hidden;
  background: #eae8f4;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.gallery-card.wide {
  grid-column: span 8;
}

.gallery-card[hidden] {
  display: none;
}

.gallery-art {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 22% 20%, rgba(255, 255, 255, 0.94), transparent 24%),
    linear-gradient(145deg, var(--art-a, #8b70ff), var(--art-b, #d9cfff) 55%, var(--art-c, #59cbd3));
}

.gallery-art::before,
.gallery-art::after {
  position: absolute;
  content: "";
  border-radius: 38% 62% 58% 42%;
  filter: saturate(105%);
}

.gallery-art::before {
  top: 12%;
  left: 14%;
  width: 64%;
  height: 64%;
  background:
    radial-gradient(circle at 50% 28%, #ffd5c1 0 11%, transparent 12%),
    radial-gradient(circle at 50% 28%, #2c2a42 0 19%, transparent 20%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.14));
  transform: rotate(-8deg);
}

.gallery-art::after {
  right: -8%;
  bottom: -12%;
  width: 58%;
  height: 48%;
  background: rgba(255, 255, 255, 0.24);
  border: 1px solid rgba(255, 255, 255, 0.35);
  transform: rotate(22deg);
}

.gallery-card[data-kind="candidate"] .gallery-art {
  --art-a: #49bdcb;
  --art-b: #c8f4ef;
  --art-c: #7461eb;
}

.gallery-card[data-kind="bead"] .gallery-art {
  --art-a: #fd85ae;
  --art-b: #ffd7ab;
  --art-c: #7764ed;
  background-size: 100% 100%, 22px 22px;
}

.gallery-card[data-kind="grid"] .gallery-art {
  --art-a: #242642;
  --art-b: #5a4f8f;
  --art-c: #35b6c6;
  background:
    linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(145deg, var(--art-a), var(--art-b) 55%, var(--art-c));
  background-size: 18px 18px, 18px 18px, 100% 100%;
}

.gallery-caption {
  position: absolute;
  right: 14px;
  bottom: 14px;
  left: 14px;
  z-index: 2;
  padding: 18px;
  color: #fff;
  background: rgba(17, 19, 38, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  backdrop-filter: blur(16px);
}

.gallery-caption span {
  display: block;
  margin-bottom: 4px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.gallery-caption h3 {
  margin: 0;
  font-size: 1.12rem;
}

.placeholder-label {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
  padding: 7px 10px;
  color: var(--ink-800);
  background: rgba(255, 255, 255, 0.82);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 750;
  backdrop-filter: blur(10px);
}

.video-shell {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  background: #20213c;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 90px rgba(17, 19, 38, 0.28);
}

.demo-video {
  width: 100%;
  min-height: 520px;
  object-fit: cover;
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  min-height: 520px;
  place-items: center;
  color: #fff;
  background:
    radial-gradient(circle at 25% 22%, rgba(119, 88, 255, 0.42), transparent 28rem),
    radial-gradient(circle at 76% 74%, rgba(59, 199, 212, 0.24), transparent 26rem),
    #191a31;
}

.video-placeholder::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 75%, transparent);
}

.video-placeholder-content {
  position: relative;
  z-index: 1;
  max-width: 520px;
  padding: 40px;
  text-align: center;
}

.play-mark {
  display: grid;
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  place-items: center;
  backdrop-filter: blur(12px);
}

.play-mark::before {
  width: 0;
  height: 0;
  margin-left: 5px;
  content: "";
  border-top: 9px solid transparent;
  border-bottom: 9px solid transparent;
  border-left: 14px solid #fff;
}

.video-placeholder p {
  color: rgba(255, 255, 255, 0.68);
}

.tech-flow {
  display: grid;
  grid-template-columns: repeat(9, auto);
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 54px;
}

.tech-node {
  display: grid;
  width: 132px;
  min-height: 132px;
  padding: 20px;
  place-items: center;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 24px;
  text-align: center;
  backdrop-filter: blur(12px);
}

.tech-node strong {
  font-size: 0.96rem;
}

.tech-node span {
  display: block;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.72rem;
}

.tech-arrow {
  color: rgba(255, 255, 255, 0.38);
  font-size: 1.4rem;
}

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

.scenario-card {
  min-height: 190px;
  padding: 28px;
  border-radius: var(--radius-md);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.scenario-symbol {
  display: inline-flex;
  margin-bottom: 34px;
  font-size: 1.7rem;
}

.about-panel,
.contact-panel,
.cta-panel {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 64px;
  align-items: center;
  padding: clamp(34px, 6vw, 74px);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.about-visual {
  position: relative;
  min-height: 320px;
  background:
    radial-gradient(circle at 36% 34%, rgba(255, 255, 255, 0.8), transparent 18%),
    linear-gradient(145deg, rgba(119, 88, 255, 0.9), rgba(59, 199, 212, 0.66));
  border-radius: 28px;
}

.about-visual::before,
.about-visual::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 30%;
}

.about-visual::before {
  inset: 18% 22%;
  background: rgba(255, 255, 255, 0.14);
  transform: rotate(12deg);
}

.about-visual::after {
  inset: 30% 34%;
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(-18deg);
}

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

.contact-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  background: rgba(247, 247, 251, 0.8);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.contact-item span {
  color: var(--ink-600);
  font-size: 0.86rem;
}

.contact-item strong {
  font-size: 0.92rem;
}

.cta-panel {
  grid-template-columns: 1fr auto;
  color: #fff;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.14), transparent 24rem),
    linear-gradient(135deg, #5e42e8, #7758ff 52%, #3facc1);
}

.cta-panel h2 {
  max-width: 760px;
  margin-bottom: 10px;
}

.cta-panel p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.72);
}

.cta-panel .button-secondary {
  white-space: nowrap;
}

.site-footer {
  padding: 68px 0 32px;
  color: rgba(255, 255, 255, 0.72);
  background: var(--ink-950);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .brand {
  margin-bottom: 18px;
  color: #fff;
}

.footer-brand p {
  max-width: 430px;
  margin-bottom: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 12px 34px;
  align-content: start;
}

.footer-links a {
  padding: 5px 0;
  transition: color 180ms ease;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-top: 28px;
  font-size: 0.84rem;
}

.page-hero {
  padding: calc(var(--header-height) + 98px) 0 84px;
}

.page-hero-inner {
  max-width: 900px;
}

.page-hero h1 {
  font-size: clamp(2.8rem, 7vw, 5.7rem);
}

.page-hero .lead {
  max-width: 700px;
}

.subnav-note {
  display: inline-flex;
  margin-top: 20px;
  padding: 9px 13px;
  color: var(--ink-700);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 650;
}

.split-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.content-card {
  padding: 34px;
  border-radius: var(--radius-md);
}

.content-card.large {
  grid-column: span 2;
}

.output-list,
.principle-list,
.faq-list {
  display: grid;
  gap: 14px;
  padding: 0;
  list-style: none;
}

.output-list li,
.principle-list li {
  position: relative;
  padding: 18px 18px 18px 48px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.output-list li::before,
.principle-list li::before {
  position: absolute;
  top: 20px;
  left: 18px;
  display: grid;
  width: 20px;
  height: 20px;
  color: #fff;
  content: "✓";
  background: var(--violet);
  border-radius: 50%;
  font-size: 0.7rem;
  place-items: center;
}

.faq-item {
  overflow: hidden;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.faq-question {
  width: 100%;
  padding: 20px 22px;
  color: var(--ink-950);
  background: transparent;
  border: 0;
  cursor: pointer;
  font-weight: 720;
  text-align: left;
}

.faq-answer {
  padding: 0 22px 20px;
  color: var(--ink-600);
}

.timeline {
  position: relative;
  display: grid;
  gap: 18px;
}

.timeline::before {
  position: absolute;
  top: 16px;
  bottom: 16px;
  left: 21px;
  width: 2px;
  content: "";
  background: linear-gradient(var(--violet), var(--cyan));
}

.timeline-item {
  position: relative;
  padding: 6px 0 6px 64px;
}

.timeline-dot {
  position: absolute;
  top: 9px;
  left: 12px;
  display: grid;
  width: 20px;
  height: 20px;
  color: #fff;
  background: var(--violet);
  border: 4px solid #eeebff;
  border-radius: 50%;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.contact-channel {
  min-height: 220px;
  padding: 30px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.status-pill {
  display: inline-flex;
  margin-top: 18px;
  padding: 7px 10px;
  color: var(--ink-700);
  background: rgba(24, 26, 50, 0.06);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 620ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 620ms cubic-bezier(0.22, 1, 0.36, 1);
}

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

.float-soft {
  animation: float-soft 5s ease-in-out infinite;
}

@keyframes float-soft {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@media (max-width: 1080px) {
  .nav-panel {
    gap: 16px;
  }

  .nav-links {
    gap: 0;
  }

  .nav-link {
    padding-inline: 9px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(390px, 1.1fr);
    gap: 38px;
  }

  .hero-orbit {
    inset: -12% 0;
  }

  .chip-top {
    right: 2%;
  }

  .chip-bottom {
    left: 2%;
  }

  .product-stage {
    min-height: 400px;
  }

  .tech-flow {
    grid-template-columns: repeat(5, 1fr);
  }

  .tech-arrow {
    display: none;
  }

  .tech-node {
    width: auto;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 68px;
  }

  .container {
    width: min(calc(100% - 36px), var(--max-width));
  }

  .section {
    padding: 88px 0;
  }

  .menu-toggle {
    display: block;
  }

  .nav-panel {
    position: fixed;
    top: var(--header-height);
    right: 14px;
    left: 14px;
    display: grid;
    max-height: 0;
    gap: 12px;
    padding: 0 18px;
    overflow: hidden;
    visibility: hidden;
    background: rgba(250, 250, 253, 0.96);
    border: 1px solid transparent;
    border-radius: 0 0 22px 22px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(-10px);
    transition:
      max-height 260ms ease,
      opacity 180ms ease,
      transform 180ms ease,
      padding 180ms ease,
      visibility 180ms ease;
    backdrop-filter: blur(18px);
  }

  .nav-panel.is-open {
    max-height: 520px;
    padding: 18px;
    visibility: visible;
    border-color: var(--line);
    opacity: 1;
    transform: translateY(0);
  }

  .nav-links,
  .nav-actions {
    display: grid;
  }

  .nav-link {
    padding: 12px 14px;
  }

  .nav-actions .button {
    width: 100%;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + 68px);
  }

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

  .hero-copy {
    max-width: 720px;
  }

  .hero-visual {
    width: min(100%, 680px);
    margin-inline: auto;
  }

  .process-grid,
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-card,
  .gallery-card.wide {
    grid-column: span 6;
  }

  .about-panel,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .about-visual {
    order: -1;
  }

  .cta-panel {
    grid-template-columns: 1fr;
  }

  .cta-panel .button {
    justify-self: start;
  }
}

@media (max-width: 700px) {
  .container {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .section {
    padding: 72px 0;
  }

  h1 {
    font-size: clamp(2.75rem, 14vw, 4.4rem);
  }

  .hero-copy h1 {
    font-size: clamp(2.65rem, 11.5vw, 3.25rem);
  }

  h2 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .hero {
    padding-bottom: 64px;
  }

  .hero-orbit {
    inset: -8% 0;
  }

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

  .hero-actions .button {
    width: 100%;
  }

  .product-window {
    padding: 10px;
    border-radius: 24px;
    transform: none;
  }

  .product-stage {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 10px;
  }

  .source-preview {
    display: none;
  }

  .pattern-preview {
    min-height: 370px;
  }

  .floating-chip {
    display: none;
  }

  .metric-strip,
  .process-grid,
  .feature-grid,
  .scenario-grid,
  .split-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .metric-item {
    padding: 18px;
  }

  .process-card,
  .feature-card {
    min-height: 220px;
  }

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

  .gallery-card,
  .gallery-card.wide {
    grid-column: span 12;
    min-height: 390px;
  }

  .video-shell,
  .demo-video,
  .video-placeholder {
    min-height: 390px;
  }

  .video-placeholder-content {
    padding: 24px;
  }

  .tech-flow {
    grid-template-columns: repeat(2, 1fr);
  }

  .tech-node:last-of-type {
    grid-column: span 2;
  }

  .about-panel,
  .contact-panel,
  .cta-panel {
    gap: 32px;
    padding: 28px;
    border-radius: 26px;
  }

  .content-card.large {
    grid-column: auto;
  }

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

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

@media (max-width: 430px) {
  .container {
    width: min(calc(100% - 24px), var(--max-width));
  }

  .brand-label-en {
    display: none;
  }

  .bead-mockup {
    gap: 2px;
    padding: 12px;
  }

  .filter-group {
    width: 100%;
  }

  .filter-button {
    flex: 1;
  }

  .tech-flow {
    gap: 10px;
  }

  .tech-node {
    min-height: 112px;
    padding: 14px;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}