:root {
  --text: #12161b;
  --muted: #626a73;
  --line: rgba(18, 22, 27, 0.12);
  --surface: #f5f7f8;
  --surface-strong: #e8edf0;
  --white: #ffffff;
  --green: #0f7b54;
  --cyan: #1c8da8;
  --gold: #c69a4a;
  --ink: #0a1015;
  --shadow: 0 24px 80px rgba(10, 16, 21, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 40px;
  color: var(--white);
  background: rgba(8, 14, 19, 0.18);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.site-header.is-scrolled {
  color: var(--text);
  background: rgba(255, 255, 255, 0.92);
  border-color: var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 166px;
  height: 40px;
  padding: 0;
  position: relative;
}

.site-header.is-scrolled .brand {
  background: transparent;
  padding-left: 0;
}

.brand-logo {
  display: block;
  width: 146px;
  height: auto;
}

.brand-logo-dark {
  display: none;
}

.brand-logo-light {
  display: block;
}

.site-header.is-scrolled .brand-logo-dark {
  display: block;
}

.site-header.is-scrolled .brand-logo-light {
  display: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
}

.nav-links a {
  opacity: 0.9;
  transition: opacity 0.2s ease;
}

.nav-links a:hover {
  opacity: 1;
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  background: transparent;
}

.menu-button span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 8vw 112px;
  color: var(--white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4, 10, 14, 0.86), rgba(4, 10, 14, 0.4) 52%, rgba(4, 10, 14, 0.08)),
    url("assets/brochure/page-29-image-0.jpg") center/cover;
  transform: scale(1.02);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 7vw, 86px);
  line-height: 1.02;
  font-weight: 700;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin: 26px 0 0;
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

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

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 154px;
  height: 48px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 700;
}

.primary-action {
  color: var(--white);
  background: var(--green);
}

.secondary-action {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.62);
}

.hero-strip {
  position: absolute;
  left: 8vw;
  right: 8vw;
  bottom: 26px;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(20px);
}

.hero-strip a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-height: 74px;
  padding: 18px 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-strip a:last-child {
  border-right: 0;
}

.hero-strip strong {
  font-size: 32px;
}

.hero-strip span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.section {
  padding: 110px 8vw;
}

.section-heading {
  max-width: 880px;
  margin-bottom: 46px;
}

.section-heading > p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.85;
  font-size: 17px;
}

.text-link {
  display: inline-flex;
  margin-top: 8px;
  color: var(--green);
  font-weight: 800;
}

.section-heading h2,
.showcase-panel h2,
.product-feature h2,
.contact h2,
.talent-column h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.14;
  letter-spacing: 0;
}

.section-heading.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.62fr);
  gap: 60px;
  max-width: none;
  align-items: end;
}

.section-heading.split > p,
.intro-grid p,
.showcase-panel span,
.product-feature p,
.service-grid p,
.talent-column p,
.contact p,
.site-footer p {
  color: var(--muted);
  line-height: 1.8;
}

.intro {
  background: var(--surface);
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.intro-grid article {
  min-height: 280px;
  padding: 34px;
  background: var(--white);
}

.intro-grid span,
.matrix-grid span {
  color: var(--green);
  font-weight: 800;
  font-size: 13px;
}

.intro-grid h3,
.matrix-grid h3,
.feature-cards h3,
.service-grid h3,
.case-card h3,
.news-column strong {
  margin: 18px 0 12px;
  font-size: 22px;
  line-height: 1.3;
}

.showcase {
  min-height: 760px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
}

.showcase-media {
  background:
    linear-gradient(180deg, rgba(7, 20, 23, 0.06), rgba(7, 20, 23, 0.12)),
    url("assets/brochure/page-47-image-0.jpg") center/cover;
}

.showcase-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 86px 8vw 86px 70px;
  background: #10171c;
  color: var(--white);
}

.solution-list {
  display: grid;
  gap: 1px;
  margin-top: 38px;
  background: rgba(255, 255, 255, 0.14);
}

.solution-list a {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  align-items: center;
  padding: 24px 0;
  background: #10171c;
}

.solution-list strong {
  font-size: 19px;
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.matrix-grid a {
  display: block;
  min-height: 220px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.matrix-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.matrix-grid a:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.product-feature {
  margin-top: 70px;
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) 1.15fr;
  gap: 48px;
  align-items: stretch;
  padding: 48px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(8, 16, 20, 0.9), rgba(8, 16, 20, 0.48)),
    url("assets/brochure/page-23-image-0.jpg") center/cover;
}

.product-feature p {
  color: rgba(255, 255, 255, 0.78);
}

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

.feature-cards article {
  min-height: 230px;
  padding: 26px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(16px);
}

.service-band {
  background: var(--surface);
}

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

.service-grid a {
  display: block;
  min-height: 220px;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.service-grid a:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.case-section {
  padding: 110px 8vw;
  color: var(--white);
  background: var(--ink);
}

.case-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr;
  gap: 18px;
}

.case-card {
  min-height: 430px;
  display: flex;
  align-items: flex-end;
  padding: 30px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.case-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.74));
}

.case-card div {
  position: relative;
  z-index: 1;
}

.case-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.case-card h3 {
  max-width: 420px;
  font-size: 28px;
}

.campus {
  background-image: url("assets/brochure/page-48-image-3.jpg");
}

.park {
  background-image: url("assets/brochure/page-20-image-0.jpg");
}

.lab {
  background-image: url("assets/brochure/page-50-image-0.jpg");
}

.news-talent {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 70px;
}

.compact {
  margin-bottom: 28px;
}

.news-column > a,
.news-column .news-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 30px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.news-column > a:last-child,
.news-column .news-item:last-child {
  border-bottom: 1px solid var(--line);
}

.news-column > a span,
.news-column .news-item span,
.news-empty span {
  color: var(--green);
  font-weight: 700;
}

.news-column > a strong,
.news-column .news-item strong,
.news-empty strong {
  display: block;
  margin: 0;
}

.news-column .news-item p,
.news-column .news-item small,
.news-empty p {
  grid-column: 2;
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.news-empty {
  padding: 24px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.news-empty strong {
  margin: 12px 0;
  font-size: 22px;
}

.talent-column {
  align-self: stretch;
  padding: 46px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.talent-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.talent-tags span {
  padding: 9px 14px;
  color: var(--green);
  background: rgba(15, 123, 84, 0.1);
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
}

.contact {
  padding: 120px 8vw;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(6, 13, 17, 0.86), rgba(6, 13, 17, 0.52)),
    url("assets/brochure/page-44-image-0.jpg") center/cover;
}

.contact-inner {
  width: min(920px, 100%);
}

.contact p {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.76);
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 34px;
}

.contact-form input,
.contact-form select,
.contact-form button {
  width: 100%;
  height: 50px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  font: inherit;
}

.contact-form input,
.contact-form select {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
}

.contact-form input::placeholder {
  color: rgba(255, 255, 255, 0.74);
}

.contact-form select option {
  color: var(--text);
}

.contact-form button {
  color: var(--white);
  background: var(--green);
  border-color: var(--green);
  font-weight: 800;
  cursor: pointer;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding: 36px 8vw;
  background: #0b1014;
  color: var(--white);
}

.site-footer p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.55);
}

.footer-logo {
  display: block;
  width: 190px;
  height: auto;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.75);
}

@media (max-width: 1100px) {
  .site-header {
    padding: 0 22px;
  }

  .nav-links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    display: none;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 14px 22px 22px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
  }

  .nav-links.is-open {
    display: grid;
  }

  .nav-links a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .menu-button {
    display: block;
    color: inherit;
  }

  .intro-grid,
  .matrix-grid,
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .showcase,
  .news-talent,
  .product-feature,
  .section-heading.split {
    grid-template-columns: 1fr;
  }

  .showcase-media {
    min-height: 430px;
  }

  .showcase-panel {
    padding: 70px 8vw;
  }

  .feature-cards,
  .contact-form {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 680px) {
  .brand {
    min-width: 138px;
    height: 36px;
  }

  .brand-logo {
    width: 122px;
  }

  .hero {
    min-height: 760px;
    padding: 110px 22px 210px;
  }

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

  .hero-strip a {
    min-height: 58px;
    padding: 12px 16px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  }

  .section,
  .case-section,
  .contact {
    padding: 76px 22px;
  }

  .intro-grid,
  .matrix-grid,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .intro-grid article,
  .service-grid article {
    min-height: auto;
    padding: 26px;
  }

  .solution-list a,
  .news-column > a,
  .news-column .news-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .news-column .news-item p,
  .news-column .news-item small,
  .news-empty p {
    grid-column: auto;
  }

  .product-feature,
  .talent-column {
    padding: 28px;
  }

  .case-card {
    min-height: 320px;
  }

  .site-footer {
    flex-direction: column;
  }
}