:root {
  color-scheme: light;
  --ink: #16201d;
  --muted: #5a6662;
  --line: #d9e2dd;
  --paper: #f7f9f6;
  --white: #ffffff;
  --steel: #60706f;
  --green: #0f5c4f;
  --blue: #164e79;
  --yellow: #d6a11e;
  --shadow: 0 20px 60px rgba(18, 35, 31, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(247, 249, 246, 0.94);
  border-bottom: 1px solid rgba(96, 112, 111, 0.16);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--white);
  background: linear-gradient(135deg, var(--green), var(--blue));
  font-weight: 800;
}

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

.brand strong {
  font-size: 15px;
  line-height: 1.2;
}

.brand small {
  color: var(--muted);
  font-size: 11px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
  color: var(--muted);
  font-size: 14px;
}

.nav a {
  text-decoration: none;
}

.nav a:hover {
  color: var(--green);
}

.hero {
  position: relative;
  min-height: min(760px, calc(100vh - 72px));
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #13201e;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(9, 18, 17, 0.92), rgba(9, 18, 17, 0.68) 43%, rgba(9, 18, 17, 0.12)),
    linear-gradient(0deg, rgba(8, 14, 13, 0.32), rgba(8, 14, 13, 0));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 36px));
  margin-left: clamp(18px, 8vw, 96px);
  padding: 72px 0 96px;
  color: var(--white);
}

.eyebrow,
.section-kicker,
.tag {
  margin: 0 0 12px;
  color: var(--yellow);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 18px;
}

.hero-actions,
.contact-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
}

.button.primary {
  color: #10201c;
  background: var(--yellow);
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(54px, 8vw, 96px) 0;
}

.intro,
.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 6vw, 86px);
  align-items: start;
}

.intro p:last-child,
.split p {
  color: var(--muted);
  font-size: 18px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.capability-grid,
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.capability-card,
.article-card {
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 28px rgba(19, 36, 32, 0.06);
}

.capability-card p,
.article-card p {
  color: var(--muted);
}

.capability-card dl {
  margin: 20px 0 0;
}

.capability-card div {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.capability-card div + div {
  margin-top: 14px;
}

.capability-card dt {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.capability-card dd {
  margin: 3px 0 0;
  color: var(--ink);
}

.process-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.process-list li {
  position: relative;
  padding: 20px 20px 20px 66px;
  border-left: 4px solid var(--green);
  background: var(--white);
  box-shadow: 0 8px 28px rgba(19, 36, 32, 0.06);
}

.process-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 22px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: var(--white);
  background: var(--green);
  font-weight: 800;
}

.process-list strong,
.process-list span {
  display: block;
}

.process-list span {
  color: var(--muted);
}

.article-card a {
  text-decoration-color: rgba(15, 92, 79, 0.35);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.faq details {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
}

.faq details p {
  margin: 12px 0 0;
  color: var(--muted);
}

.contact-band {
  justify-content: space-between;
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto clamp(54px, 8vw, 96px);
  padding: clamp(28px, 5vw, 48px);
  color: var(--white);
  background: linear-gradient(135deg, #12322d, #174461);
}

.contact-band > div:first-child {
  max-width: 820px;
}

.contact-band p {
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.82);
}

.contact-band p:last-child {
  margin-bottom: 0;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  padding: 26px clamp(18px, 4vw, 56px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--white);
}

.site-footer p {
  margin: 0;
}

@media (max-width: 860px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: 680px;
  }

  .hero-overlay {
    background: linear-gradient(90deg, rgba(9, 18, 17, 0.92), rgba(9, 18, 17, 0.64));
  }

  .intro,
  .split,
  .capability-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .brand {
    align-items: flex-start;
  }

  .hero-content {
    width: calc(100% - 32px);
    margin-left: 16px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .button {
    width: 100%;
  }
}