:root {
  --ink: #142337;
  --muted: #637083;
  --line: #d9e1e8;
  --paper: #ffffff;
  --wash: #f4f8f7;
  --soft-green: #dceadf;
  --green: #406b55;
  --blue: #263f63;
  --accent: #9a6b3d;
  --shadow: 0 24px 80px rgba(20, 35, 55, 0.12);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.7;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 12px clamp(20px, 5vw, 64px);
  border-bottom: 1px solid rgba(217, 225, 232, 0.82);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 174px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--blue);
  font-size: 14px;
  font-weight: 800;
}

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

.brand strong {
  font-size: 16px;
}

.brand em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
  line-height: 1.2;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  padding: 9px 13px;
  border-radius: 999px;
  color: #46566a;
  font-size: 14px;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
  background: var(--wash);
  outline: none;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--ink);
  background: #fff;
  font: inherit;
}

.section,
.section-band {
  padding: clamp(68px, 8vw, 116px) clamp(20px, 5vw, 64px);
}

.section > *,
.section-band > * {
  max-width: var(--max);
  margin-right: auto;
  margin-left: auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
  align-items: center;
  gap: clamp(36px, 7vw, 92px);
  min-height: calc(100vh - 126px);
  background:
    linear-gradient(120deg, rgba(244, 248, 247, 0.95), rgba(255, 255, 255, 0.8) 54%, rgba(220, 234, 223, 0.74)),
    radial-gradient(circle at 86% 20%, rgba(154, 107, 61, 0.16), transparent 34%);
}

.hero > * {
  margin: 0;
}

.eyebrow,
.section-heading p {
  margin: 0 0 13px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(56px, 7vw, 104px);
  line-height: 0.98;
}

h1 span {
  display: block;
  margin-top: 8px;
  color: var(--blue);
  font-size: clamp(28px, 3.6vw, 46px);
  font-weight: 700;
}

.hero-title {
  margin-bottom: 20px;
  color: var(--blue);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  line-height: 1.28;
}

.hero-lede {
  max-width: 760px;
  margin-bottom: 30px;
  color: #334356;
  font-size: clamp(17px, 1.55vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 1px solid var(--blue);
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 800;
  line-height: 1.2;
}

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

.button.secondary {
  color: var(--blue);
  background: rgba(255, 255, 255, 0.58);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: none;
  box-shadow: 0 10px 30px rgba(38, 63, 99, 0.16);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 760px;
  margin: 0;
}

.hero-facts div {
  min-height: 104px;
  border-top: 1px solid rgba(64, 107, 85, 0.28);
  padding-top: 16px;
}

.hero-facts dt {
  color: var(--green);
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 900;
  line-height: 1;
}

.hero-facts dd {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-visual {
  position: relative;
  max-width: 410px;
  justify-self: center;
}

.hero-visual::before {
  position: absolute;
  inset: 24px -22px -22px 22px;
  border: 1px solid rgba(64, 107, 85, 0.28);
  border-radius: 8px;
  content: "";
}

.hero-visual img {
  position: relative;
  z-index: 1;
  width: min(410px, 78vw);
  aspect-ratio: 0.72;
  border-radius: 8px;
  box-shadow: var(--shadow);
  object-fit: cover;
  object-position: center top;
}

.portrait-caption {
  position: relative;
  z-index: 2;
  width: calc(100% - 36px);
  margin: -58px auto 0;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 8px;
  padding: 15px 18px;
  color: #fff;
  background: rgba(20, 35, 55, 0.78);
  backdrop-filter: blur(12px);
}

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

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

.portrait-caption span {
  margin-top: 2px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
  line-height: 1.45;
}

.section-heading {
  max-width: 760px;
  margin-bottom: clamp(28px, 5vw, 52px);
}

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

.intro {
  padding-top: clamp(46px, 6vw, 86px);
  padding-bottom: clamp(46px, 6vw, 86px);
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 5vw, 64px);
}

.intro-grid p {
  margin: 0;
  color: #34465b;
  font-size: clamp(17px, 1.5vw, 21px);
}

.timeline {
  position: relative;
  display: grid;
  gap: 0;
}

.timeline::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 154px;
  width: 1px;
  background: var(--line);
  content: "";
}

.timeline-item {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 48px;
  padding: 0 0 38px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item time {
  color: var(--green);
  font-size: 17px;
  font-weight: 900;
}

.timeline-item div {
  position: relative;
  border-bottom: 1px solid var(--line);
  padding: 0 0 32px;
}

.timeline-item div::before {
  position: absolute;
  top: 6px;
  left: -56px;
  width: 15px;
  height: 15px;
  border: 4px solid #fff;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 1px var(--line);
  content: "";
}

.timeline-item h3,
.project-card h3,
.credential-row h3 {
  margin-bottom: 10px;
  font-size: clamp(21px, 2vw, 28px);
  line-height: 1.25;
}

.timeline-item p,
.project-card p,
.vision-content > p,
.quote-panel p {
  margin-bottom: 0;
  color: #46566a;
  font-size: 16px;
}

.projects {
  background: var(--wash);
}

.project-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr 1fr;
  gap: 18px;
}

.project-card {
  min-height: 300px;
  border: 1px solid rgba(217, 225, 232, 0.88);
  border-radius: 8px;
  padding: clamp(24px, 3vw, 36px);
  background: #fff;
}

.project-card.feature {
  color: #fff;
  background:
    linear-gradient(140deg, rgba(20, 35, 55, 0.95), rgba(38, 63, 99, 0.92)),
    linear-gradient(45deg, var(--green), var(--blue));
}

.project-card span,
.credential-row span {
  display: block;
  margin-bottom: 18px;
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.project-card.feature span,
.project-card.feature p {
  color: rgba(255, 255, 255, 0.78);
}

.project-card.feature h3 {
  color: #fff;
}

.vision {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  align-items: center;
  gap: clamp(36px, 7vw, 88px);
  color: #fff;
  background:
    linear-gradient(135deg, rgba(20, 35, 55, 0.98), rgba(35, 65, 74, 0.94)),
    radial-gradient(circle at 76% 16%, rgba(220, 234, 223, 0.22), transparent 32%);
}

.vision > * {
  margin: 0;
}

.vision .section-heading p,
.vision .section-heading h2 {
  color: #fff;
}

.vision-content > p {
  max-width: 780px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(17px, 1.5vw, 20px);
}

.quote-panel {
  margin-top: 28px;
  border-left: 3px solid var(--soft-green);
  padding: 3px 0 3px 20px;
}

.quote-panel strong {
  display: block;
  margin-bottom: 7px;
  color: var(--soft-green);
}

.quote-panel p {
  color: rgba(255, 255, 255, 0.78);
}

.vision-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 14px;
  max-width: 430px;
  justify-self: end;
}

.vision-map span {
  display: grid;
  min-height: 138px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  padding: 18px;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.07);
  text-align: center;
  font-size: 18px;
  font-weight: 900;
}

.capability-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.capability-list li {
  border: 1px solid rgba(64, 107, 85, 0.24);
  border-radius: 999px;
  padding: 12px 18px;
  color: #2f4f40;
  background: var(--wash);
  font-weight: 800;
}

.credentials {
  padding-top: 0;
}

.credential-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.credential-row article {
  min-height: 170px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
  align-items: start;
  gap: clamp(28px, 6vw, 80px);
  background: var(--wash);
}

.contact > * {
  margin: 0;
}

.contact-copy h2 {
  margin: 0;
  font-size: clamp(28px, 3.4vw, 48px);
  line-height: 1.18;
}

.contact-list {
  display: grid;
  gap: 12px;
  font-style: normal;
}

.contact-list a,
.contact-list span,
.copy-button {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 15px 18px;
  color: #24344a;
  background: #fff;
  text-align: left;
  font: inherit;
  overflow-wrap: anywhere;
}

.contact-list a:hover,
.copy-button:hover,
.contact-list a:focus-visible,
.copy-button:focus-visible {
  border-color: rgba(64, 107, 85, 0.46);
  outline: none;
}

.site-footer {
  padding: 26px clamp(20px, 5vw, 64px);
  color: var(--muted);
  background: #fff;
  text-align: center;
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 920px) {
  .site-header {
    min-height: 64px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 8px;
    background: #fff;
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    border-radius: 6px;
    padding: 12px;
  }

  .hero,
  .vision,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    max-width: 360px;
    justify-self: start;
  }

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

  .project-card {
    min-height: 0;
  }

  .vision-map {
    max-width: none;
    justify-self: stretch;
  }
}

@media (max-width: 700px) {
  .section,
  .section-band {
    padding: 56px 18px;
  }

  .brand {
    min-width: 0;
  }

  .hero-facts,
  .intro-grid,
  .credential-row {
    grid-template-columns: 1fr;
  }

  .hero-facts div {
    min-height: 0;
  }

  .timeline::before {
    left: 8px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-left: 32px;
  }

  .timeline-item div::before {
    left: -31px;
  }

  .timeline-item div {
    padding-bottom: 28px;
  }

  .vision-map {
    grid-template-columns: 1fr;
  }

  .vision-map span {
    min-height: 82px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .portrait-caption {
    width: calc(100% - 22px);
    margin-top: -50px;
  }
}