:root {
  color-scheme: light;
  --page: #f4f7f6;
  --surface: #ffffff;
  --surface-muted: #eaf0ee;
  --text: #17201d;
  --muted: #586660;
  --line: #d5dfdb;
  --accent: #0f6b4d;
  --accent-dark: #0a523b;
  --accent-soft: #dcece6;
  --hero: #111c20;
  --radius: 6px;
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

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

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  transform: translateY(-160%);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  padding: 8px 12px;
  box-shadow: 0 8px 24px rgb(15 35 28 / 18%);
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgb(255 255 255 / 96%);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.brand strong {
  font-size: 20px;
  line-height: 1.2;
}

.brand span {
  color: var(--muted);
  font-size: 13px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.site-nav a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius);
  color: #35413d;
  padding: 7px 12px;
  text-decoration: none;
  font-size: 14px;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--surface-muted);
  color: var(--accent-dark);
}

.hero {
  position: relative;
  min-height: 610px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--hero);
  color: #ffffff;
}

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

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgb(5 14 17 / 24%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 68px 0 76px;
}

.eyebrow {
  margin: 0 0 14px;
  color: #cce7dc;
  font-size: 15px;
  font-weight: 700;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: 60px;
  line-height: 1.15;
  font-weight: 750;
  text-shadow: 0 2px 18px rgb(0 0 0 / 36%);
}

.hero-lead {
  max-width: 650px;
  margin: 24px 0 0;
  color: #edf5f2;
  font-size: 19px;
  line-height: 1.8;
  text-shadow: 0 2px 12px rgb(0 0 0 / 42%);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--accent);
  color: #ffffff;
  padding: 10px 18px;
  text-decoration: none;
  font-weight: 700;
  white-space: nowrap;
  transition: background-color 150ms ease, transform 150ms ease;
}

.button:hover {
  background: var(--accent-dark);
}

.button:active {
  transform: translateY(1px);
}

.button.secondary {
  border-color: rgb(255 255 255 / 58%);
  background: rgb(17 28 32 / 72%);
}

.button.secondary:hover {
  background: rgb(17 28 32 / 92%);
}

.service-strip {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

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

.service-strip-item {
  min-height: 118px;
  padding: 24px 22px;
  border-right: 1px solid var(--line);
}

.service-strip-item:first-child {
  border-left: 1px solid var(--line);
}

.service-strip-item strong,
.service-strip-item span {
  display: block;
}

.service-strip-item strong {
  margin-bottom: 4px;
  font-size: 16px;
}

.service-strip-item span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.section {
  padding: 84px 0;
}

.section.white {
  background: var(--surface);
}

.section.muted {
  background: var(--surface-muted);
}

.section-heading {
  max-width: 740px;
  margin-bottom: 34px;
}

.section-heading h2,
.page-title {
  margin: 0;
  font-size: 36px;
  line-height: 1.3;
}

.section-heading p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.capability {
  min-height: 180px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 26px;
}

.capability h3 {
  margin: 0;
  font-size: 20px;
}

.capability p {
  margin: 10px 0 0;
  color: var(--muted);
}

.boundary-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 64px;
  align-items: start;
}

.boundary-layout h2 {
  margin: 0;
  font-size: 36px;
  line-height: 1.35;
}

.boundary-layout > div > p {
  margin: 16px 0 0;
  color: var(--muted);
}

.boundary-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.boundary-list li {
  position: relative;
  padding: 18px 0 18px 30px;
  border-bottom: 1px solid var(--line);
}

.boundary-list li::before {
  content: "";
  position: absolute;
  top: 26px;
  left: 4px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--accent);
  border-radius: 50%;
}

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.trust-item {
  padding-top: 18px;
  border-top: 3px solid var(--accent);
}

.trust-item h3 {
  margin: 0;
  font-size: 18px;
}

.trust-item p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.page-hero {
  border-bottom: 1px solid var(--line);
  background: var(--surface-muted);
  padding: 64px 0 56px;
}

.page-hero p {
  max-width: 760px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.prose {
  max-width: 820px;
  margin: 0 auto;
}

.prose section + section {
  margin-top: 44px;
}

.prose h2 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.4;
}

.prose h3 {
  margin: 24px 0 8px;
  font-size: 18px;
}

.prose p,
.prose li {
  color: #3f4c47;
}

.prose p {
  margin: 10px 0 0;
}

.prose ul,
.prose ol {
  margin: 12px 0 0;
  padding-left: 24px;
}

.prose li + li {
  margin-top: 8px;
}

.notice-block {
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  padding: 18px 20px;
}

.notice-block p {
  margin: 0;
  color: #24443a;
}

.contact-details {
  display: grid;
  grid-template-columns: 190px 1fr;
  margin: 28px 0 0;
  border-top: 1px solid var(--line);
}

.contact-details dt,
.contact-details dd {
  margin: 0;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.contact-details dt {
  color: var(--muted);
}

.contact-details dd {
  font-weight: 600;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #e7eeeb;
  color: #33413b;
  padding: 38px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: end;
}

.footer-company {
  margin: 0;
  font-weight: 700;
}

.footer-note {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
  font-size: 13px;
}

.footer-links a {
  color: #34443e;
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid #65a98f;
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .container {
    width: min(100% - 32px, 1120px);
  }

  .header-inner {
    min-height: auto;
    flex-wrap: wrap;
    padding: 14px 0 10px;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    min-height: 560px;
  }

  .hero h1 {
    font-size: 46px;
  }

  .service-strip-grid,
  .trust-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .service-strip-item:nth-child(3) {
    border-left: 1px solid var(--line);
  }

  .service-strip-item:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .boundary-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15px;
  }

  .brand {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .site-nav a {
    padding: 7px 10px;
    font-size: 13px;
  }

  .hero {
    min-height: 540px;
  }

  .hero-image {
    object-position: 66% center;
  }

  .hero::after {
    background: rgb(5 14 17 / 62%);
  }

  .hero-content {
    padding: 54px 0 64px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-lead {
    margin-top: 18px;
    font-size: 16px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .service-strip-grid,
  .capability-grid,
  .trust-row,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .service-strip-item,
  .service-strip-item:first-child,
  .service-strip-item:nth-child(3) {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .service-strip-item:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 60px 0;
  }

  .section-heading h2,
  .boundary-layout h2,
  .page-title {
    font-size: 29px;
  }

  .page-hero {
    padding: 46px 0 40px;
  }

  .footer-grid {
    align-items: start;
  }

  .footer-links {
    justify-content: flex-start;
  }

  .contact-details {
    grid-template-columns: 1fr;
  }

  .contact-details dt {
    padding-bottom: 2px;
    border-bottom: 0;
  }

  .contact-details dd {
    padding-top: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}