:root {
  color-scheme: dark;
  --bg: #050712;
  --panel: rgba(8, 12, 25, 0.72);
  --panel-border: rgba(184, 204, 255, 0.2);
  --text: #f8fbff;
  --muted: #a2a9bb;
  --cyan: #27f3ff;
  --purple: #bf5cff;
  --gold: #d7a64b;
  --ember: #b9682e;
  --line: rgba(255, 255, 255, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 16% 12%, rgba(215, 166, 75, 0.24), transparent 28rem),
    radial-gradient(circle at 78% 28%, rgba(39, 243, 255, 0.18), transparent 30rem),
    linear-gradient(145deg, #130c10 0%, #07131b 48%, #03050d 100%);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

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

button {
  border: 0;
  color: inherit;
  font: inherit;
}

.landing {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  padding: 52px clamp(18px, 4vw, 72px) 64px;
}

.landing::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background:
    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: 70px 70px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 82%);
}

.landing-frame {
  position: relative;
  z-index: 1;
  width: min(100%, 1320px);
  margin: 0 auto;
  border: 1px solid rgba(213, 224, 255, 0.24);
  border-radius: 8px;
  background:
    radial-gradient(circle at 18% 22%, rgba(215, 166, 75, 0.13), transparent 28rem),
    radial-gradient(circle at 80% 34%, rgba(39, 243, 255, 0.16), transparent 30rem),
    rgba(3, 6, 15, 0.74);
  padding: 24px clamp(18px, 4vw, 76px) 42px;
  box-shadow: 0 26px 90px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(14px);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 188px;
}

.brand-logo {
  display: block;
  width: 164px;
  height: auto;
}

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

.nav-links {
  gap: 30px;
  color: #e3e7f3;
  font-size: 14px;
}

.nav-actions {
  gap: 10px;
}

.language-switcher {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.language-switcher button {
  min-height: 36px;
  background: transparent;
  color: #c5ccdc;
  cursor: pointer;
  padding: 0 9px;
  font-size: 12px;
}

.language-switcher button.active {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.login-link,
.secondary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 0 16px;
  color: #eef2ff;
}

.hero {
  width: min(100%, 1040px);
  margin: 70px auto 42px;
  text-align: center;
}

.hero-showcase {
  position: relative;
  display: grid;
  align-items: end;
  width: 100%;
  min-height: clamp(520px, 62vw, 760px);
  margin: 46px auto 24px;
  overflow: hidden;
  border: 1px solid rgba(215, 166, 75, 0.38);
  border-radius: 8px;
  background: #05070d;
  text-align: left;
  box-shadow: 0 30px 95px rgba(0, 0, 0, 0.42);
}

.hero-showcase::before,
.hero-showcase::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
}

.hero-showcase::before {
  background:
    linear-gradient(90deg, rgba(3, 5, 10, 0.86) 0%, rgba(3, 5, 10, 0.44) 46%, rgba(3, 5, 10, 0.18) 100%),
    linear-gradient(0deg, rgba(3, 5, 10, 0.9) 0%, rgba(3, 5, 10, 0.08) 58%);
  z-index: 1;
}

.hero-showcase::after {
  border: 1px solid rgba(255, 238, 177, 0.24);
  border-radius: 8px;
  box-shadow: inset 0 0 80px rgba(0, 0, 0, 0.55);
  z-index: 2;
}

.hero-board-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.9;
}

.hero-content {
  position: relative;
  z-index: 3;
  width: min(780px, 92%);
  padding: clamp(28px, 5vw, 68px);
}

.hero-showcase .hero-kicker {
  color: var(--gold);
}

.hero-showcase h1 {
  margin-left: 0;
  background: linear-gradient(92deg, #fff5ca 0%, #d7a64b 40%, #58f0ff 100%);
  background-clip: text;
  font-size: clamp(42px, 7.4vw, 94px);
  text-shadow: 0 22px 60px rgba(0, 0, 0, 0.36);
}

.hero-showcase .hero-copy {
  max-width: 680px;
  margin-left: 0;
  color: #eef2f7;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.85);
}

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

.hero-kicker {
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 1010px;
  margin: 0 auto;
  background: linear-gradient(92deg, #e956ff 8%, #ad78ff 45%, #39e9ff 92%);
  background-clip: text;
  color: transparent;
  font-size: clamp(42px, 6.9vw, 88px);
  font-weight: 850;
  line-height: 1.02;
  text-transform: uppercase;
  text-wrap: balance;
}

:lang(zh-CN) .hero h1,
:lang(ja) .hero h1 {
  line-break: strict;
}

:lang(ja) .hero h1 {
  font-size: clamp(34px, 5.9vw, 76px);
}

.hero-copy {
  max-width: 760px;
  margin: 22px auto 0;
  color: #c5cbda;
  font-size: 17px;
  line-height: 1.72;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 30px;
}

.primary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 8px;
  background: var(--cyan);
  color: #001014;
  padding: 0 22px;
  font-size: 14px;
  font-weight: 850;
  text-transform: uppercase;
  box-shadow: 0 0 28px rgba(39, 243, 255, 0.5);
}

.hero-showcase .primary-cta {
  background: var(--gold);
  color: #120b04;
  box-shadow: 0 0 34px rgba(215, 166, 75, 0.48);
}

.reel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.board-reel {
  margin-top: 22px;
}

.reel article {
  position: relative;
  overflow: hidden;
  min-height: 202px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: #0a0d18;
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.24);
}

.board-reel article {
  border-color: rgba(215, 166, 75, 0.28);
}

.reel img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 202px;
  object-fit: cover;
}

.reel span {
  position: absolute;
  left: 12px;
  bottom: 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(5, 7, 18, 0.54);
  color: rgba(255, 255, 255, 0.84);
  font-size: 12px;
  padding: 6px 10px;
  backdrop-filter: blur(10px);
}

.board-showcase {
  margin-top: 70px;
}

.board-gallery {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.board-gallery article {
  display: grid;
  align-content: start;
  gap: 11px;
  grid-column: span 3;
  overflow: hidden;
  border: 1px solid rgba(215, 166, 75, 0.23);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025)),
    rgba(5, 7, 18, 0.78);
  padding: 10px;
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.28);
}

.board-gallery img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  border-radius: 6px;
  object-fit: cover;
  background: #080a12;
}

.board-gallery .gallery-feature {
  grid-column: span 6;
  grid-row: span 2;
}

.gallery-feature img {
  aspect-ratio: 16 / 9;
}

.board-gallery span {
  color: var(--gold);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.board-gallery h3 {
  margin: 0;
  color: #ffffff;
  font-size: 19px;
  line-height: 1.25;
}

.gallery-feature h3 {
  font-size: clamp(24px, 2.6vw, 34px);
}

.board-gallery p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.62;
}

.feature-grid {
  display: grid;
  margin-top: 66px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px;
}

.feature-grid article {
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

.feature-icon {
  position: relative;
  width: 46px;
  height: 42px;
  margin-bottom: 18px;
  border: 2px solid var(--purple);
  border-radius: 8px;
  box-shadow: 0 0 22px rgba(191, 92, 255, 0.32);
}

.feature-icon::after {
  position: absolute;
  right: -13px;
  top: 9px;
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-left: 0;
  border-radius: 4px;
  color: inherit;
  content: "";
}

.api-icon {
  border-color: var(--cyan);
  color: var(--cyan);
}

.video-icon {
  color: var(--purple);
}

.billing-icon {
  border-color: #ffffff;
  color: #ffffff;
}

.feature-grid h2 {
  margin: 0 0 10px;
  font-size: 22px;
  text-transform: uppercase;
}

.feature-grid p {
  max-width: 360px;
  margin: 0;
  color: var(--muted);
  line-height: 1.66;
}

.pricing-strip {
  display: grid;
  margin-top: 58px;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr) auto;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.pricing-strip div,
.pricing-strip a {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  padding: 13px 14px;
}

.pricing-strip span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
}

.pricing-strip code,
.pricing-strip strong {
  display: block;
  color: #ecfeff;
  font-size: 18px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.pricing-strip a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  color: #080a12;
  font-weight: 800;
}

.usage-guide {
  margin-top: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
  padding: 24px;
}

.usage-guide-copy {
  display: grid;
  max-width: 760px;
  gap: 8px;
}

.usage-guide-copy span,
.usage-guide-grid span {
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.usage-guide-copy h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.08;
  text-transform: uppercase;
}

.usage-guide-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.usage-guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.usage-guide-grid article {
  display: grid;
  align-content: start;
  gap: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(5, 7, 18, 0.72);
  padding: 15px;
}

.usage-guide-grid code,
.usage-guide-grid strong {
  color: #ecfeff;
  font-size: 16px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.usage-guide-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.landing-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 34px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.landing-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
}

.landing-footer a:hover {
  color: #ffffff;
}

.public-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 16% 4%, rgba(191, 92, 255, 0.28), transparent 30rem),
    radial-gradient(circle at 84% 10%, rgba(39, 243, 255, 0.16), transparent 28rem),
    linear-gradient(145deg, #0d0717 0%, #07121d 48%, #03050d 100%);
  color: var(--text);
}

.public-header,
.public-main,
.public-footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.public-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 26px 0;
}

.public-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 200px;
  color: #ffffff;
  font-weight: 800;
}

.public-logo img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.public-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  color: #c5ccdc;
  font-size: 14px;
}

.public-nav a:hover {
  color: #ffffff;
}

.public-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  color: #eef2ff;
  padding: 0 16px;
}

.public-main {
  padding: 44px 0 72px;
}

.public-hero {
  max-width: 820px;
  margin-bottom: 32px;
}

.public-hero h1 {
  margin: 10px 0 16px;
  background: linear-gradient(92deg, #ffffff 0%, #d98cff 44%, #44e8ff 100%);
  background-clip: text;
  color: transparent;
  font-size: clamp(40px, 7vw, 78px);
  font-weight: 850;
  line-height: 1.02;
  text-wrap: balance;
}

.public-hero p {
  max-width: 760px;
  margin: 0;
  color: #c5cbda;
  font-size: 17px;
  line-height: 1.75;
}

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

.public-card,
.policy-card {
  border: 1px solid rgba(213, 224, 255, 0.18);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.035)),
    rgba(5, 7, 18, 0.72);
  padding: 22px;
  box-shadow: 0 20px 64px rgba(0, 0, 0, 0.26);
}

.public-card.highlight {
  border-color: rgba(39, 243, 255, 0.45);
  box-shadow: 0 0 0 1px rgba(39, 243, 255, 0.12), 0 22px 70px rgba(39, 243, 255, 0.12);
}

.public-card span,
.policy-card span {
  display: block;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.public-card h2,
.policy-card h2 {
  margin: 12px 0 10px;
  color: #ffffff;
  font-size: 22px;
}

.price {
  display: block;
  margin: 14px 0 12px;
  color: #ffffff;
  font-size: 42px;
  font-weight: 850;
  line-height: 1;
}

.public-card p,
.policy-card p,
.policy-card li {
  color: #aeb6ca;
  line-height: 1.68;
}

.public-card p,
.policy-card p {
  margin: 0;
}

.public-card ul,
.policy-card ul {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding-left: 18px;
}

.public-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.62fr);
  gap: 16px;
  margin-top: 16px;
}

.public-panel {
  border: 1px solid rgba(213, 224, 255, 0.16);
  border-radius: 8px;
  background: rgba(5, 7, 18, 0.64);
  padding: 24px;
}

.public-panel h2 {
  margin: 0 0 10px;
  color: #ffffff;
}

.public-panel p {
  margin: 0;
  color: #aeb6ca;
  line-height: 1.7;
}

.public-panel code {
  display: block;
  overflow-wrap: anywhere;
  margin-top: 14px;
  border: 1px solid rgba(39, 243, 255, 0.22);
  border-radius: 8px;
  background: rgba(39, 243, 255, 0.07);
  color: #dffcff;
  padding: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

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

.policy-card {
  padding: 26px;
}

.policy-card h2 {
  font-size: 24px;
}

.policy-card h3 {
  margin: 22px 0 8px;
  color: #ffffff;
  font-size: 18px;
}

.policy-card a {
  color: var(--cyan);
}

.contact-grid {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
}

.contact-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.contact-row {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 14px;
  border: 1px solid rgba(213, 224, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  padding: 14px;
}

.contact-row span {
  color: #8f9bb2;
}

.contact-row a,
.contact-row strong {
  color: #ffffff;
  overflow-wrap: anywhere;
}

.public-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.public-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 8px;
  padding: 0 16px;
  font-weight: 800;
}

.public-actions .primary {
  background: var(--cyan);
  color: #001014;
}

.public-actions .secondary {
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

.public-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 24px 0 38px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.public-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.public-footer a:hover {
  color: #ffffff;
}

@media (max-width: 980px) {
  .landing {
    padding: 22px 12px;
  }

  .landing-frame {
    padding: 18px;
  }

  .site-nav,
  .nav-links,
  .nav-actions,
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .site-nav {
    gap: 18px;
  }

  .nav-actions,
  .language-switcher {
    width: 100%;
  }

  .brand {
    min-width: 0;
  }

  .language-switcher {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .reel,
  .feature-grid,
  .pricing-strip,
  .usage-guide-grid,
  .board-gallery,
  .public-grid,
  .public-band,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-showcase {
    min-height: 620px;
    margin-top: 28px;
  }

  .hero-showcase::before {
    background:
      linear-gradient(180deg, rgba(3, 5, 10, 0.2) 0%, rgba(3, 5, 10, 0.88) 72%),
      linear-gradient(90deg, rgba(3, 5, 10, 0.5), rgba(3, 5, 10, 0.18));
  }

  .hero-board-image {
    object-position: center top;
  }

  .hero-content {
    width: 100%;
    padding: 24px;
  }

  .board-gallery article,
  .board-gallery .gallery-feature {
    grid-column: auto;
    grid-row: auto;
  }

  .hero {
    margin-top: 48px;
    text-align: left;
  }

  .hero h1,
  .hero-copy {
    margin-left: 0;
  }

  .hero h1 {
    font-size: clamp(34px, 12vw, 60px);
  }

  .hero-showcase h1 {
    max-width: 100%;
    font-size: clamp(34px, 10.5vw, 44px);
    overflow-wrap: normal;
  }

  :lang(ja) .hero h1 {
    font-size: clamp(32px, 10.5vw, 52px);
  }

  .landing-footer,
  .public-header,
  .public-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .public-nav {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .public-main {
    padding-top: 22px;
  }

  .public-hero h1 {
    font-size: clamp(34px, 12vw, 58px);
  }

  .contact-row {
    grid-template-columns: 1fr;
  }
}