:root {
  --ink: #07111f;
  --muted: #5e6878;
  --line: rgba(8, 24, 43, 0.12);
  --panel: #ffffff;
  --wash: #f4f8fb;
  --cyan: #20c7df;
  --blue: #226ce8;
  --green: #20b486;
  --gold: #d99d35;
  --magenta: #c44dd8;
  --radius: 8px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB",
    Arial, sans-serif;
  background: #ffffff;
  letter-spacing: 0;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  color: #fff;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand,
.nav,
.hero-actions,
.hero-metrics,
.site-footer,
.check-list li {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 13px;
  color: #77f3ff;
}

.site-header.is-scrolled .brand-mark {
  color: var(--blue);
}

.nav {
  justify-content: center;
  gap: clamp(14px, 2vw, 32px);
  font-size: 14px;
}

.nav a,
.header-link {
  opacity: 0.86;
}

.nav a:hover,
.header-link:hover {
  opacity: 1;
}

.header-link {
  padding: 9px 15px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 14px;
}

.hero {
  position: relative;
  min-height: 92vh;
  overflow: hidden;
  color: #fff;
  isolation: isolate;
}

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

.hero-media {
  object-fit: cover;
  z-index: -3;
}

.hero-shade {
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(2, 8, 17, 0.84) 0%, rgba(4, 17, 28, 0.68) 44%, rgba(4, 20, 30, 0.2) 100%),
    linear-gradient(0deg, rgba(3, 8, 15, 0.82) 0%, rgba(3, 8, 15, 0) 44%);
}

.hero-content {
  width: min(860px, calc(100% - 40px));
  padding: 18vh 0 210px clamp(20px, 7vw, 96px);
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: #70f0ff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(40px, 6vw, 82px);
  line-height: 1.08;
  font-weight: 800;
}

.hero-copy {
  max-width: 760px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(16px, 1.7vw, 21px);
  line-height: 1.8;
}

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

.primary-action,
.secondary-action {
  min-height: 46px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 700;
}

.primary-action {
  color: #03121f;
  background: linear-gradient(135deg, #7bf2ff, #ffcf75);
}

.secondary-action {
  border: 1px solid rgba(255, 255, 255, 0.42);
  color: #fff;
}

.hero-metrics {
  position: absolute;
  left: clamp(20px, 7vw, 96px);
  right: clamp(20px, 7vw, 96px);
  bottom: 36px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(18px);
}

.hero-metrics div {
  padding: 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-metrics div:last-child {
  border-right: 0;
}

.hero-metrics strong {
  display: block;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1;
}

.hero-metrics span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.section,
.section-band,
.section-split {
  padding: clamp(72px, 9vw, 128px) clamp(20px, 6vw, 86px);
}

.section-grid,
.section-heading,
.feature-grid,
.case-list,
.honor-grid,
.education,
.site-footer {
  width: min(1180px, 100%);
  margin: 0 auto;
}

.section-band {
  background: #fff;
}

.section-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: clamp(32px, 6vw, 90px);
  align-items: start;
}

.section h2,
.section-band h2,
.section-split h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.16;
}

.section-grid p:last-child,
.section-heading p,
.split-copy p,
.education-copy p,
.research-box p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.section-kicker {
  color: var(--blue);
}

.business {
  background:
    linear-gradient(180deg, #f8fbfd 0%, #eef6f8 100%);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 44px;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-card {
  position: relative;
  min-height: 270px;
  padding: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
}

.feature-card::after {
  position: absolute;
  right: -42px;
  bottom: -42px;
  width: 120px;
  height: 120px;
  border: 1px solid rgba(32, 199, 223, 0.28);
  border-radius: 50%;
  content: "";
}

.feature-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--green));
  font-weight: 800;
}

.feature-card h3,
.case-item h3,
.research-box h3 {
  margin: 24px 0 12px;
  font-size: 22px;
}

.feature-card p,
.case-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.section-split {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1fr);
  gap: clamp(36px, 7vw, 96px);
  align-items: center;
  background: #08111f;
  color: #fff;
}

.panel-visual {
  position: relative;
  min-height: 440px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 20% 20%, rgba(32, 199, 223, 0.32), transparent 32%),
    radial-gradient(circle at 82% 78%, rgba(217, 157, 53, 0.26), transparent 28%),
    linear-gradient(135deg, #07111f, #102733);
}

.panel-visual::before {
  position: absolute;
  inset: 34px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  content: "";
}

.orbit {
  position: absolute;
  border: 1px solid rgba(124, 243, 255, 0.42);
  border-radius: 50%;
  animation: spin 18s linear infinite;
}

.orbit-a {
  inset: 86px;
}

.orbit-b {
  inset: 126px 58px;
  border-color: rgba(255, 207, 117, 0.36);
  animation-duration: 24s;
  animation-direction: reverse;
}

.platform-core {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
}

.platform-core span {
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 800;
}

.platform-core strong {
  margin-top: 12px;
  color: #8af4ff;
  font-size: 12px;
  letter-spacing: 0;
}

.split-copy p {
  color: rgba(255, 255, 255, 0.72);
}

.check-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 30px 0 0;
  list-style: none;
}

.check-list li {
  gap: 12px;
  color: rgba(255, 255, 255, 0.86);
}

.check-list li::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  content: "";
  flex: 0 0 auto;
}

.cases {
  background: #fff;
}

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

.case-item {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff, #f7fbfd);
}

.case-item span {
  color: var(--gold);
  font-family: Georgia, serif;
  font-size: 42px;
}

.honors {
  background: #f4f8fb;
}

.honor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.honor-tile {
  min-height: 138px;
  padding: 24px;
  border-left: 4px solid var(--green);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 18px 44px rgba(13, 31, 49, 0.06);
}

.honor-tile strong,
.honor-tile span {
  display: block;
}

.honor-tile strong {
  font-size: 18px;
  line-height: 1.5;
}

.honor-tile span {
  margin-top: 12px;
  color: var(--muted);
}

.education {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: clamp(32px, 6vw, 86px);
  align-items: center;
}

.team {
  background:
    linear-gradient(180deg, #f8fbfd 0%, #eef5f8 100%);
}

.team-grid {
  display: grid;
  width: min(1180px, 100%);
  margin: 0 auto;
  gap: 24px;
}

.member-card {
  display: grid;
  grid-template-columns: minmax(250px, 0.38fr) minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 22px 60px rgba(13, 31, 49, 0.07);
}

.member-photo {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
  object-position: center top;
  background: #dfe7ec;
}

.member-content {
  padding: clamp(28px, 4vw, 52px);
}

.member-header {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}

.member-index {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.member-header h3 {
  margin: 0;
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.18;
}

.member-header h3 span {
  color: var(--muted);
  font-size: 0.6em;
  font-weight: 500;
}

.member-title {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.member-email {
  align-self: flex-start;
  padding: 10px 14px;
  border: 1px solid rgba(34, 108, 232, 0.24);
  border-radius: 999px;
  color: var(--blue);
  font-size: 14px;
  white-space: nowrap;
}

.member-email:hover {
  color: #fff;
  background: var(--blue);
}

.member-bios {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4vw, 46px);
  padding-top: 28px;
}

.member-bios h4 {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.member-bios p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.research-box {
  padding: 34px;
  border-radius: var(--radius);
  color: #fff;
  background:
    linear-gradient(135deg, rgba(34, 108, 232, 0.94), rgba(32, 180, 134, 0.92)),
    #226ce8;
}

.research-box p {
  color: rgba(255, 255, 255, 0.84);
}

.site-footer {
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(20px, 6vw, 86px);
  color: #fff;
  background: #07111f;
}

.footer-brand {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
}

.site-footer p:last-child {
  margin: 0;
  color: rgba(255, 255, 255, 0.66);
}

.site-footer .icp-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  font-size: 13px;
}

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

.back-top {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  color: #fff;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

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

  .hero-metrics,
  .feature-grid,
  .case-list,
  .honor-grid,
  .section-split,
  .education,
  .section-grid {
    grid-template-columns: 1fr 1fr;
  }

  .section-split,
  .education,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .member-card {
    grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1fr);
  }

  .member-bios {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 14px 18px;
  }

  .header-link {
    display: none;
  }

  .hero {
    min-height: 100vh;
  }

  .hero-content {
    width: 100%;
    padding: 128px 20px 330px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-metrics {
    left: 20px;
    right: 20px;
    bottom: 22px;
    grid-template-columns: 1fr 1fr;
  }

  .hero-metrics div {
    padding: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .feature-grid,
  .case-list,
  .honor-grid {
    grid-template-columns: 1fr;
  }

  .member-card {
    grid-template-columns: 1fr;
  }

  .member-photo {
    height: 420px;
    min-height: 0;
  }

  .member-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .panel-visual {
    min-height: 320px;
  }

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