:root {
  --bg: #eff2f7;
  --bg-soft: #f8fbff;
  --panel: rgba(255, 255, 255, 0.92);
  --panel-solid: #ffffff;
  --ink: #24252b;
  --ink-soft: #5c6475;
  --muted: #7c8392;
  --orange: #ff6b1a;
  --orange-deep: #ef4f00;
  --orange-soft: rgba(255, 107, 26, 0.1);
  --blue: #7eb3ff;
  --line: rgba(36, 37, 43, 0.08);
  --line-strong: rgba(36, 37, 43, 0.14);
  --shadow: 0 18px 50px rgba(78, 101, 145, 0.12);
  --radius-xl: 26px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --content-width: min(1240px, calc(100vw - 56px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Avenir Next", sans-serif;
  background:
    linear-gradient(180deg, rgba(174, 193, 255, 0.16), transparent 280px),
    linear-gradient(180deg, #f3f6fb 0%, #eef2f8 100%);
  color: var(--ink);
}

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

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

.container {
  width: var(--content-width);
  margin: 0 auto;
}

.site-shell {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(243, 246, 251, 0.86);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  gap: 24px;
}

.brand {
  width: 168px;
  flex: 0 0 auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: var(--muted);
}

.site-nav a {
  padding: 10px 14px;
  border-radius: 999px;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav .is-current {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.75);
}

.nav-cta {
  padding: 12px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
  color: #fff;
  box-shadow: 0 10px 24px rgba(255, 107, 26, 0.2);
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--ink);
  margin: 7px 0;
  border-radius: 999px;
}

.hero,
.page-hero,
.section {
  padding: 88px 0;
}

.hero-compact {
  padding-top: 48px;
}

.hero-grid,
.split-grid,
.about-grid,
.careers-grid,
.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 42px;
  align-items: center;
}

.hero-home {
  min-height: 760px;
  overflow: hidden;
}

.hero-copy h1,
.section-heading h2,
.section-copy h2,
.section-copy h1,
.about-panel h1 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.hero-copy h1,
.section-copy h1,
.about-panel h1 {
  font-size: clamp(42px, 6vw, 72px);
  max-width: 11ch;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--orange);
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 12px;
}

.hero-text,
.section-heading p,
.section-copy p,
.about-panel p,
.info-card p,
.capability-card p,
.business-card p,
.job-list p,
.timeline-card strong,
.timeline-card span,
.page-card p {
  color: var(--ink-soft);
  line-height: 1.9;
  font-size: 18px;
}

.section-copy p,
.about-panel p,
.info-card p,
.capability-card p,
.business-card p,
.job-list p,
.timeline-card strong,
.timeline-card span,
.page-card p {
  font-size: 17px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 600;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
  box-shadow: 0 14px 32px rgba(255, 107, 26, 0.22);
}

.button-secondary {
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.86);
}

.hero-stats,
.content-grid,
.overview-grid,
.capability-grid,
.business-grid,
.page-card-grid {
  display: grid;
  gap: 22px;
}

.hero-stats {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 32px 0 0;
}

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

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

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

.hero-stats div,
.info-card,
.capability-card,
.business-card,
.timeline-card,
.about-panel,
.job-list article,
.signal-card,
.page-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.hero-stats div,
.info-card,
.capability-card,
.business-card,
.about-panel,
.job-list article,
.page-card {
  padding: 30px;
  border-radius: var(--radius-lg);
}

.hero-stats dt {
  font-size: 22px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.02em;
}

.hero-stats dd {
  margin: 8px 0 0;
  color: var(--ink-soft);
}

.hero-visual {
  position: relative;
  min-height: 520px;
}

.hero-card {
  padding: 0;
  border-radius: 28px;
  overflow: hidden;
  background: transparent;
  box-shadow: 0 30px 70px rgba(87, 102, 141, 0.16);
}

.hero-visual-ghost {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}

.signal-card {
  position: absolute;
  right: 10px;
  bottom: 18px;
  max-width: 300px;
  padding: 18px 20px;
  border-radius: 16px;
}

.signal-card span {
  display: block;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}

.section-light {
  background: rgba(255, 255, 255, 0.46);
}

.section-accent {
  position: relative;
}

.section-accent::before {
  content: "";
  position: absolute;
  inset: 28px 0;
  background:
    radial-gradient(circle at top right, rgba(255, 107, 26, 0.08), transparent 28%),
    linear-gradient(180deg, rgba(230, 238, 252, 0.5), rgba(255, 255, 255, 0.18));
  z-index: -1;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.narrow {
  max-width: 640px;
}

.section-heading h2,
.section-copy h2 {
  font-size: clamp(32px, 4.2vw, 56px);
  margin-bottom: 18px;
}

.info-card span {
  display: inline-flex;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: #fff;
  background: linear-gradient(135deg, #ff9052 0%, var(--orange) 100%);
}

.info-card h3,
.capability-card h3,
.business-card h3,
.page-card h3,
.job-list h3,
.about-panel h3 {
  margin: 0 0 14px;
  font-size: 28px;
  letter-spacing: -0.03em;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
}

.feature-list li {
  position: relative;
  padding-left: 24px;
  margin: 14px 0;
  color: var(--ink-soft);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
}

.media-panel {
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: var(--panel-solid);
}

.media-panel img,
.hero-card img {
  width: 100%;
  height: auto;
}

.timeline-card {
  display: grid;
  gap: 18px;
  padding: 26px;
  border-radius: 20px;
}

.timeline-card div {
  padding: 18px 20px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
}

.timeline-card span {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
}

.about-panel-dark {
  color: #fff;
  background: linear-gradient(135deg, #24262c 0%, #3a3d46 100%);
}

.about-panel-dark p {
  color: rgba(255, 255, 255, 0.82);
}

.job-list {
  display: grid;
  gap: 18px;
}

.page-card {
  display: block;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 26px 70px rgba(78, 101, 145, 0.16);
}

.page-card:nth-child(3n + 1) {
  border-top: 3px solid #ff9154;
}

.page-card:nth-child(3n + 2) {
  border-top: 3px solid #ffc16b;
}

.page-card:nth-child(3n + 3) {
  border-top: 3px solid #a8c9ff;
}

.footer-simple {
  text-align: center;
}

.footer-records {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.site-footer {
  padding: 42px 0;
  background: #26272d;
  color: rgba(255, 255, 255, 0.88);
}

.site-footer p,
.site-footer a {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.8;
}

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

.footer-logo {
  width: 180px;
  margin-bottom: 20px;
}

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

.page-hero-research {
  min-height: 720px;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.44), rgba(255, 255, 255, 0)),
    repeating-linear-gradient(-32deg, rgba(164, 179, 215, 0.08) 0, rgba(164, 179, 215, 0.08) 1px, transparent 1px, transparent 26px);
  pointer-events: none;
}

.page-hero-research::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(90deg, rgba(243, 246, 251, 0.98) 0%, rgba(243, 246, 251, 0.84) 24%, rgba(243, 246, 251, 0.28) 54%, rgba(243, 246, 251, 0) 76%),
    url("../images/hero-research.png") center center / cover no-repeat;
  pointer-events: none;
  z-index: 0;
}

.hero-compact::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(171, 184, 235, 0.12), rgba(255, 255, 255, 0)),
    radial-gradient(circle at 70% 20%, rgba(255, 136, 69, 0.1), transparent 22%);
  pointer-events: none;
}

.hero-home::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(90deg, rgba(243, 246, 251, 0.98) 0%, rgba(243, 246, 251, 0.84) 26%, rgba(243, 246, 251, 0.22) 52%, rgba(243, 246, 251, 0) 76%),
    url("../images/hero-model.png") center center / cover no-repeat;
  pointer-events: none;
  z-index: 0;
}

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

.hero .container,
.page-hero .container {
  position: relative;
  z-index: 1;
}

.hero-copy,
.section-copy {
  max-width: 640px;
}

.hero-copy p,
.section-copy p,
.about-panel p {
  text-wrap: pretty;
}

.footer-grid h3 {
  margin: 0 0 12px;
}

@media (max-width: 1080px) {
  .hero-grid,
  .split-grid,
  .about-grid,
  .careers-grid,
  .footer-grid,
  .overview-grid,
  .content-grid,
  .capability-grid,
  .business-grid,
  .page-card-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1,
  .section-copy h1,
  .about-panel h1 {
    max-width: none;
  }

  .hero-home {
    min-height: auto;
  }

  .page-hero-research {
    min-height: auto;
  }

  .hero-home::after {
    left: 0;
    right: 0;
    opacity: 0.92;
    background:
      linear-gradient(90deg, rgba(243, 246, 251, 0.98) 0%, rgba(243, 246, 251, 0.82) 34%, rgba(243, 246, 251, 0.26) 62%, rgba(243, 246, 251, 0) 84%),
      url("../images/hero-model.png") 64% center / cover no-repeat;
  }

  .signal-card {
    position: static;
    max-width: none;
    margin-top: 16px;
  }
}

@media (max-width: 840px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: 82px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding: 22px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.97);
    box-shadow: var(--shadow);
  }

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

  .hero,
  .page-hero,
  .section {
    padding: 72px 0;
  }

  .hero-visual {
    min-height: auto;
  }

  .hero-home::after {
    inset: auto 0 0 0;
    min-height: 300px;
    background:
      linear-gradient(180deg, rgba(243, 246, 251, 0.92) 0%, rgba(243, 246, 251, 0.28) 34%, rgba(243, 246, 251, 0) 100%),
      url("../images/hero-model.png") center bottom / cover no-repeat;
    opacity: 0.82;
  }

  .page-hero-research::after {
    inset: auto 0 0 0;
    min-height: 300px;
    background:
      linear-gradient(180deg, rgba(243, 246, 251, 0.92) 0%, rgba(243, 246, 251, 0.3) 34%, rgba(243, 246, 251, 0) 100%),
      url("../images/hero-research.png") center bottom / cover no-repeat;
    opacity: 0.82;
  }

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

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}