:root {
  color-scheme: dark;
  --black: #000000;
  --ink: #f5f5f7;
  --ink-soft: #a1a1a6;
  --ink-muted: #6e6e73;
  --surface: #111113;
  --surface-2: #1d1d1f;
  --surface-3: #2b2b2f;
  --line: rgba(255, 255, 255, 0.13);
  --blue: #2997ff;
  --green: #30d158;
  --violet: #bf5af2;
  --shadow: 0 34px 90px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--black);
}

body {
  margin: 0;
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--black);
  letter-spacing: 0;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  color: rgba(245, 245, 247, 0.9);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    padding 180ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(22px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 15px;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 34px);
  color: rgba(245, 245, 247, 0.76);
  font-size: 14px;
  font-weight: 600;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
  transition: color 160ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: #fff;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 1px;
  background: var(--blue);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  color: #fff;
  background: transparent;
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 2px 0;
  background: currentColor;
}

.hero {
  position: relative;
  display: grid;
  min-height: 94svh;
  overflow: hidden;
  align-items: center;
  color: #fff;
  background: #000;
}

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

.hero > picture img {
  object-fit: cover;
  object-position: center;
  opacity: 0.6;
}

.hero-shade {
  background:
    linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.94) 31%, rgba(0, 0, 0, 0.28) 74%),
    linear-gradient(0deg, #000 0%, rgba(0, 0, 0, 0) 34%, rgba(0, 0, 0, 0.2) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  gap: clamp(24px, 5vw, 72px);
  align-items: end;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 126px 0 84px;
}

.hero-copy-block {
  min-width: 0;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero h1,
.center-title h2,
.split-layout h2,
.model-copy h2,
.contact-section h2 {
  margin: 0;
  font-weight: 850;
  line-height: 1.04;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 830px;
  font-size: 88px;
  overflow-wrap: anywhere;
}

.hero-copy {
  max-width: 720px;
  margin: 26px 0 0;
  color: rgba(245, 245, 247, 0.76);
  font-size: clamp(17px, 1.8vw, 22px);
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 800;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

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

.button.primary {
  background: var(--blue);
  color: #fff;
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.26);
  color: #fff;
}

.hero-persona {
  position: relative;
  justify-self: end;
  width: min(31vw, 380px);
  min-width: 280px;
  isolation: isolate;
}

.hero-persona::before {
  position: absolute;
  inset: 16% 8% 8%;
  z-index: -1;
  border-radius: 999px;
  background:
    radial-gradient(circle, rgba(41, 151, 255, 0.28), rgba(41, 151, 255, 0) 62%),
    radial-gradient(circle at 70% 30%, rgba(191, 90, 242, 0.22), rgba(191, 90, 242, 0) 58%);
  content: "";
  filter: blur(10px);
}

.hero-persona img {
  width: 100%;
  filter: drop-shadow(0 34px 38px rgba(0, 0, 0, 0.52));
}

.persona-caption {
  position: absolute;
  right: 8px;
  bottom: 8px;
  min-width: 190px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 14px 16px;
  background: rgba(14, 14, 16, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.persona-caption strong,
.persona-caption span {
  display: block;
}

.persona-caption strong {
  color: #fff;
  font-size: 18px;
}

.persona-caption span {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 700;
}

.section-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.persona-band {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #050505;
}

.persona-band-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: clamp(28px, 6vw, 74px);
  align-items: center;
  padding: clamp(46px, 7vw, 84px) 0;
}

.persona-band h2 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(30px, 5vw, 62px);
  line-height: 1.08;
}

.persona-band p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.75;
}

.signal-strip {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
}

.signal-grid span {
  display: grid;
  min-height: 78px;
  place-items: center;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(245, 245, 247, 0.82);
  font-size: 15px;
  font-weight: 750;
  text-align: center;
}

.signal-grid span:last-child {
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.section {
  padding: clamp(74px, 9vw, 124px) 0;
  background: #000;
}

.business-section,
.about-section {
  background:
    linear-gradient(180deg, #000 0%, #101012 48%, #000 100%);
}

.capability-section {
  background: #f5f5f7;
  color: #1d1d1f;
}

.model-section {
  background: #050505;
}

.center-title {
  max-width: 880px;
  margin: 0 auto 46px;
  text-align: center;
}

.center-title h2,
.split-layout h2,
.model-copy h2,
.contact-section h2 {
  font-size: clamp(34px, 5.8vw, 72px);
}

.center-title p:last-child,
.model-copy p,
.contact-section p {
  margin: 22px auto 0;
  color: var(--ink-soft);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.65;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}

.business-card {
  grid-column: span 3;
  min-height: 300px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: clamp(24px, 3vw, 34px);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03)),
    #111113;
  box-shadow: var(--shadow);
}

.business-card.featured {
  grid-column: span 6;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.72fr);
  gap: 30px;
  align-items: start;
  min-height: 360px;
  background:
    linear-gradient(125deg, rgba(41, 151, 255, 0.26), rgba(48, 209, 88, 0.08) 44%, rgba(255, 255, 255, 0.05)),
    #111113;
}

.business-card.featured .card-index,
.business-card.featured h3,
.business-card.featured p {
  grid-column: 1;
}

.business-card.featured ul {
  grid-column: 2;
  grid-row: 1 / span 3;
  align-self: end;
}

.card-index {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  color: var(--blue);
  font-weight: 850;
}

.business-card h3 {
  margin: 26px 0 14px;
  font-size: clamp(25px, 3vw, 36px);
  line-height: 1.12;
}

.business-card p {
  max-width: 760px;
  margin: 0;
  color: rgba(245, 245, 247, 0.72);
  font-size: 17px;
  line-height: 1.75;
}

.business-card ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  color: rgba(245, 245, 247, 0.8);
  list-style: none;
}

.business-card li {
  padding: 14px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-weight: 700;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(34px, 6vw, 76px);
  align-items: start;
}

.about-heading {
  display: grid;
  gap: 24px;
}

.about-portrait {
  position: relative;
  width: min(260px, 82%);
  min-height: 270px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background:
    radial-gradient(circle at 52% 20%, rgba(41, 151, 255, 0.22), transparent 40%),
    rgba(255, 255, 255, 0.05);
}

.about-portrait img {
  position: absolute;
  right: -34px;
  bottom: -58px;
  width: 112%;
  max-width: none;
  filter: drop-shadow(0 28px 30px rgba(0, 0, 0, 0.42));
}

.capability-list {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(29, 29, 31, 0.12);
  border-radius: 8px;
  background: rgba(29, 29, 31, 0.12);
}

.capability-list article {
  padding: clamp(24px, 4vw, 34px);
  background: #fff;
}

.capability-list h3 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 36px);
}

.capability-list p,
.long-copy p {
  margin: 0;
  color: #515154;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.8;
}

.model-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: clamp(34px, 7vw, 90px);
  align-items: center;
}

.model-copy p {
  max-width: 620px;
  margin-left: 0;
}

.process {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.process div {
  min-height: 170px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: 24px;
  background: var(--surface);
}

.process span {
  color: var(--green);
  font-weight: 850;
}

.process strong {
  display: block;
  margin-top: 42px;
  font-size: clamp(25px, 4vw, 42px);
}

.long-copy {
  display: grid;
  gap: 18px;
}

.experience-card {
  display: grid;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: clamp(22px, 3vw, 30px);
  background:
    linear-gradient(135deg, rgba(41, 151, 255, 0.18), rgba(255, 255, 255, 0.04)),
    rgba(255, 255, 255, 0.04);
}

.experience-card strong {
  color: var(--blue);
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1;
}

.experience-card span {
  color: #fff;
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 800;
  line-height: 1.45;
}

.about-section .long-copy p {
  color: rgba(245, 245, 247, 0.68);
}

.contact-section {
  padding: clamp(72px, 9vw, 118px) 0;
  color: #fff;
  background:
    linear-gradient(180deg, #050505 0%, #111113 100%);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: clamp(34px, 7vw, 88px);
  align-items: center;
}

.contact-section p {
  max-width: 660px;
  margin-left: 0;
}

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

.contact-item {
  display: block;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.06);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.contact-item:hover {
  border-color: rgba(41, 151, 255, 0.72);
  background: rgba(41, 151, 255, 0.12);
  transform: translateY(-2px);
}

.contact-item span {
  display: block;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 750;
}

.contact-item strong {
  display: block;
  margin-top: 8px;
  color: #fff;
  font-size: clamp(23px, 4vw, 34px);
  overflow-wrap: anywhere;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: rgba(245, 245, 247, 0.62);
  background: #000;
}

.site-footer a {
  color: #fff;
  font-weight: 800;
}

@media (max-width: 980px) {
  .hero h1 {
    font-size: 64px;
  }

  .signal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .business-card,
  .business-card.featured {
    grid-column: span 6;
  }

  .business-card.featured,
  .hero-content,
  .persona-band-inner,
  .split-layout,
  .model-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero-persona {
    width: min(42vw, 260px);
    min-width: 210px;
  }

  .business-card.featured .card-index,
  .business-card.featured h3,
  .business-card.featured p,
  .business-card.featured ul {
    grid-column: auto;
    grid-row: auto;
  }
}

@media (max-width: 820px) {
  .site-header {
    padding: 14px 20px;
  }

  .menu-button {
    display: grid;
  }

  .site-nav {
    position: fixed;
    top: 70px;
    right: 20px;
    left: 20px;
    display: grid;
    gap: 4px;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    background: rgba(20, 20, 22, 0.96);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition:
      opacity 160ms ease,
      transform 160ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 12px;
  }

  .hero {
    min-height: 90svh;
  }

  .hero > picture img {
    object-position: 64% center;
    opacity: 0.45;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.86) 68%, rgba(0, 0, 0, 0.48) 100%),
      linear-gradient(0deg, #000 0%, rgba(0, 0, 0, 0) 42%);
  }

  .hero-content {
    padding: 118px 0 58px;
  }

  .hero h1 {
    font-size: 48px;
    line-height: 1.08;
  }

  .hero-persona {
    justify-self: center;
    margin-top: 6px;
  }

  .persona-caption {
    right: -8px;
    bottom: 0;
    min-width: 170px;
  }

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

  .signal-grid span {
    min-height: 58px;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
  }

  .business-grid,
  .process {
    grid-template-columns: 1fr;
  }

  .business-card,
  .business-card.featured {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 12px 16px;
  }

  .brand span:last-child {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .section-inner,
  .hero-content {
    width: calc(100% - 32px);
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    gap: 20px;
    padding: 96px 0 34px;
  }

  .eyebrow,
  .section-kicker {
    margin-bottom: 12px;
    font-size: 12px;
  }

  .hero-actions {
    display: grid;
    gap: 12px;
    margin-top: 22px;
  }

  .hero h1 {
    font-size: 36px;
    line-height: 1.1;
    max-width: 100%;
    word-break: break-all;
  }

  .hero-copy {
    max-width: 100%;
    margin-top: 18px;
    font-size: 17px;
    line-height: 1.72;
  }

  .button {
    width: 100%;
    min-height: 46px;
  }

  .hero-persona {
    width: min(40vw, 154px);
    min-width: 132px;
    justify-self: end;
    margin-top: 0;
    margin-right: 8px;
  }

  .persona-caption {
    position: relative;
    right: auto;
    bottom: auto;
    min-width: 138px;
    margin: -10px 0 0 auto;
    padding: 10px 12px;
    text-align: center;
  }

  .persona-caption strong {
    font-size: 15px;
  }

  .persona-caption span {
    font-size: 12px;
  }

  .persona-band-inner {
    padding: 38px 0;
  }

  .persona-band h2,
  .center-title h2,
  .split-layout h2,
  .model-copy h2,
  .contact-section h2 {
    font-size: 31px;
    line-height: 1.12;
  }

  .persona-band p:last-child,
  .center-title p:last-child,
  .model-copy p,
  .contact-section p {
    margin-top: 16px;
    font-size: 16px;
  }

  .signal-grid span {
    min-height: 54px;
    font-size: 14px;
  }

  .section {
    padding: 58px 0;
  }

  .business-card,
  .business-card.featured {
    min-height: auto;
    padding: 22px;
  }

  .business-card h3 {
    font-size: 25px;
  }

  .business-card p {
    font-size: 16px;
  }

  .process div {
    min-height: 138px;
  }

  .site-footer {
    display: grid;
  }
}