:root {
  color-scheme: dark;
  --bg: #07090c;
  --panel: rgba(19, 23, 28, 0.78);
  --panel-strong: rgba(12, 15, 19, 0.94);
  --line: rgba(232, 219, 194, 0.18);
  --text: #f7f4ee;
  --muted: rgba(247, 244, 238, 0.68);
  --cyan: #51d6e8;
  --gold: #d7b46a;
  --rose: #da6b8f;
  --green: #7fd68a;
  --max: 1180px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(115deg, rgba(81, 214, 232, 0.08), transparent 32%),
    linear-gradient(245deg, rgba(215, 180, 106, 0.08), transparent 28%),
    var(--bg);
  color: var(--text);
}

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

img {
  max-width: 100%;
}

.site-shell {
  overflow: hidden;
}

.topbar {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 10;
  display: flex;
  width: min(calc(100% - 32px), var(--max));
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 16px 12px 18px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  background: rgba(7, 9, 12, 0.68);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
  transition: background 180ms ease, border-color 180ms ease;
}

.topbar.is-scrolled {
  border-color: rgba(215, 180, 106, 0.24);
  background: rgba(7, 9, 12, 0.9);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 186px;
}

.brand-mark {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(215, 180, 106, 0.68);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(215, 180, 106, 0.12), rgba(81, 214, 232, 0.08)),
    rgba(7, 9, 12, 0.76);
  box-shadow: inset 0 0 18px rgba(215, 180, 106, 0.08);
}

.brand-mark svg {
  width: 34px;
  height: 34px;
}

.brand-mark path {
  fill: none;
  vector-effect: non-scaling-stroke;
}

.mark-ring {
  stroke: rgba(215, 180, 106, 0.58);
  stroke-width: 1.6;
}

.mark-s {
  stroke: #f0d58a;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 4.2;
}

.mark-z {
  stroke: rgba(81, 214, 232, 0.86);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.4;
}

.mark-q {
  stroke: rgba(247, 244, 238, 0.42);
  stroke-width: 2;
}

.mark-y {
  stroke: rgba(215, 180, 106, 0.86);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.6;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1rem;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 0.94rem;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--text);
}

.account-link,
.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-weight: 700;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.account-link {
  padding: 0 18px;
  border: 1px solid rgba(81, 214, 232, 0.32);
  color: #dffbff;
  white-space: nowrap;
}

.primary-button {
  padding: 0 24px;
  background: linear-gradient(90deg, #d7b46a, #51d6e8);
  color: #071014;
}

.secondary-button {
  padding: 0 22px;
  border: 1px solid rgba(247, 244, 238, 0.24);
  background: rgba(255, 255, 255, 0.06);
}

.account-link:hover,
.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-2px);
}

.hero {
  position: relative;
  min-height: 820px;
  isolation: isolate;
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
  z-index: -2;
}

.hero-shade {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(7, 9, 12, 0.96) 0%, rgba(7, 9, 12, 0.78) 34%, rgba(7, 9, 12, 0.22) 72%),
    linear-gradient(180deg, rgba(7, 9, 12, 0.14), #07090c 96%);
}

.hero-content {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding: 190px 0 90px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero h1,
.section h2,
.engine-section h2,
.contact-section h2 {
  margin: 0;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 760px;
  font-size: clamp(3.25rem, 7vw, 6.8rem);
  line-height: 0.98;
}

.hero-copy {
  max-width: 680px;
  margin: 30px 0 0;
  color: rgba(247, 244, 238, 0.78);
  font-size: 1.16rem;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 720px;
  margin-top: 58px;
}

.hero-metrics div {
  min-height: 124px;
  padding: 22px;
  border: 1px solid rgba(247, 244, 238, 0.16);
  border-radius: 8px;
  background: rgba(7, 9, 12, 0.5);
  backdrop-filter: blur(12px);
}

.hero-metrics strong {
  display: block;
  color: var(--text);
  font-size: 2rem;
}

.hero-metrics span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
}

.intro-band,
.section,
.engine-section,
.contact-section,
.site-footer {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.intro-band {
  display: grid;
  grid-template-columns: 0.36fr 1fr;
  gap: 40px;
  align-items: start;
  padding: 58px 0 30px;
  border-bottom: 1px solid var(--line);
}

.intro-band p {
  margin: 0;
  color: rgba(247, 244, 238, 0.78);
  font-size: 1.24rem;
  line-height: 1.9;
}

.section {
  padding: 116px 0 0;
}

.section-head {
  max-width: 780px;
}

.section-head.wide {
  max-width: 920px;
}

.section h2,
.engine-section h2,
.contact-section h2 {
  font-size: clamp(2.2rem, 4.8vw, 4.6rem);
  line-height: 1.08;
}

.business-grid,
.case-grid,
.tech-panel {
  display: grid;
  gap: 18px;
  margin-top: 38px;
}

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

.business-grid article,
.tech-panel article,
.case-grid article,
.contact-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  backdrop-filter: blur(14px);
}

.business-grid article {
  min-height: 520px;
  padding: 28px;
}

.index {
  display: inline-flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(81, 214, 232, 0.13);
  color: var(--cyan);
  font-weight: 800;
}

.business-grid h3,
.tech-panel h3 {
  margin: 28px 0 14px;
  font-size: 1.36rem;
}

.business-grid p,
.business-grid li,
.tech-panel p,
.case-grid p,
.engine-copy p,
.contact-section p {
  color: var(--muted);
  line-height: 1.78;
}

.business-grid p,
.tech-panel p,
.case-grid p,
.engine-copy p,
.contact-section p {
  margin: 0;
}

.business-grid ul {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.business-grid li {
  position: relative;
  padding-left: 18px;
}

.business-grid li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  content: "";
}

.engine-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 0.78fr);
  gap: 44px;
  align-items: center;
  padding: 118px 0 0;
}

.engine-copy p {
  max-width: 660px;
  margin-top: 24px;
  font-size: 1.05rem;
}

.engine-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.engine-board {
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid rgba(81, 214, 232, 0.24);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(81, 214, 232, 0.1), transparent 34%),
    var(--panel-strong);
}

.board-row {
  display: grid;
  gap: 8px;
  padding: 20px;
  border: 1px solid rgba(247, 244, 238, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.board-row span {
  color: var(--gold);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.board-row b {
  font-size: 1.08rem;
}

.board-row.is-live {
  border-color: rgba(81, 214, 232, 0.45);
  background: rgba(81, 214, 232, 0.12);
}

.split {
  display: grid;
  grid-template-columns: 0.76fr 1fr;
  gap: 42px;
  align-items: start;
}

.tech-panel {
  margin-top: 0;
}

.tech-panel article {
  padding: 28px;
}

.tech-panel h3 {
  margin-top: 0;
}

.case-grid {
  grid-template-columns: 1.1fr 0.9fr;
}

.case-grid article {
  min-height: 252px;
  padding: 28px;
}

.case-grid .case-feature {
  grid-row: span 2;
  min-height: 522px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    linear-gradient(160deg, rgba(81, 214, 232, 0.18), rgba(215, 180, 106, 0.12)),
    var(--panel-strong);
}

.case-grid span {
  color: var(--gold);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.case-grid strong {
  display: block;
  margin: 18px 0 14px;
  font-size: clamp(1.55rem, 3vw, 3rem);
  line-height: 1.08;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(360px, 0.72fr);
  gap: 36px;
  align-items: end;
  margin-top: 118px;
  padding: 48px;
  border: 1px solid rgba(215, 180, 106, 0.26);
  border-radius: 8px;
  background:
    linear-gradient(100deg, rgba(215, 180, 106, 0.12), rgba(81, 214, 232, 0.08)),
    var(--panel-strong);
}

.contact-section p {
  max-width: 680px;
  margin-top: 22px;
  font-size: 1.04rem;
}

.contact-card {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 24px;
  font-style: normal;
}

.contact-card a {
  color: #dffbff;
  font-size: 1.28rem;
  font-weight: 800;
  word-break: break-word;
}

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

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 0 42px;
  color: var(--muted);
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer strong {
  color: var(--text);
}

.site-footer span {
  margin-top: 8px;
}

.site-footer a {
  white-space: nowrap;
}

@media (max-width: 1040px) {
  .topbar {
    position: absolute;
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .hero {
    min-height: 760px;
  }

  .hero-content {
    padding-top: 220px;
  }

  .intro-band,
  .business-grid,
  .engine-section,
  .split,
  .case-grid,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .business-grid article {
    min-height: auto;
  }

  .case-grid .case-feature {
    min-height: 360px;
  }

  .engine-section {
    align-items: stretch;
  }
}

@media (max-width: 720px) {
  .topbar,
  .intro-band,
  .section,
  .engine-section,
  .contact-section,
  .site-footer,
  .hero-content {
    width: min(calc(100% - 20px), var(--max));
  }

  .topbar {
    top: 10px;
    padding: 12px;
  }

  .brand {
    min-width: 0;
  }

  .nav-links {
    gap: 12px 16px;
    font-size: 0.86rem;
  }

  .account-link {
    width: 100%;
  }

  .hero {
    min-height: 820px;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(7, 9, 12, 0.96), rgba(7, 9, 12, 0.58)),
      linear-gradient(180deg, rgba(7, 9, 12, 0.1), #07090c 96%);
  }

  .hero-content {
    padding-top: 250px;
  }

  .hero h1 {
    font-size: 2.56rem;
    line-height: 1.04;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    margin-top: 36px;
  }

  .intro-band {
    padding-top: 40px;
  }

  .section,
  .engine-section {
    padding-top: 78px;
  }

  .contact-section {
    margin-top: 82px;
    padding: 24px;
  }

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