:root {
  color-scheme: light;
  --sw-color-primary: #163b66;
  --sw-color-secondary: #1f8a8a;
  --sw-color-accent: #f59e0b;
  --sw-page-bg: #f7f5f0;
  --sw-layer-bg: #eef2f6;
  --sw-card-bg: #ffffff;
  --sw-text-primary: #243447;
  --sw-text-secondary: #64748b;
  --sw-border-color: #d9e2ec;
  --sw-color-success: #2e7d5b;
  --content-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  color: var(--sw-text-primary);
  background: var(--sw-page-bg);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

a:focus-visible {
  outline: 3px solid var(--sw-color-accent);
  outline-offset: 4px;
}

.container {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 8px;
  color: #ffffff;
  background: var(--sw-color-primary);
  transform: translateY(-160%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(217, 226, 236, 0.9);
  background: rgba(247, 245, 240, 0.96);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--sw-color-primary);
  text-decoration: none;
}

.brand img {
  border-radius: 12px;
}

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

.brand strong {
  font-size: 18px;
  line-height: 1.25;
}

.brand small {
  color: var(--sw-text-secondary);
  font-size: 11px;
  line-height: 1.4;
}

.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  gap: clamp(12px, 2.2vw, 28px);
}

.site-nav a,
.header-links a {
  color: var(--sw-text-primary);
  font-size: 14px;
  text-decoration: none;
}

.site-nav a:hover,
.header-links a:hover,
.footer-links a:hover {
  color: var(--sw-color-secondary);
}

.header-links {
  display: flex;
  gap: 14px;
}

.hero {
  padding: clamp(64px, 9vw, 112px) 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  align-items: center;
  gap: clamp(32px, 7vw, 88px);
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--sw-color-secondary);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid #b8d8d8;
  border-radius: 999px;
  background: #edf7f7;
  letter-spacing: 0;
}

.eyebrow::before {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--sw-color-success);
  content: "";
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 760px;
  margin: 22px 0 20px;
  color: var(--sw-color-primary);
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.hero-description {
  max-width: 720px;
  margin: 0 0 18px;
  color: var(--sw-text-secondary);
  font-size: clamp(17px, 1.8vw, 21px);
}

.important-note {
  margin: 0;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-weight: 700;
  text-decoration: none;
}

.button-primary {
  color: #ffffff;
  background: var(--sw-color-accent);
}

.button-primary:hover {
  background: #d88906;
}

.button-secondary {
  border-color: var(--sw-border-color);
  color: var(--sw-color-primary);
  background: var(--sw-card-bg);
}

.button-secondary:hover {
  border-color: var(--sw-color-primary);
}

.availability {
  margin: 16px 0 0;
  color: var(--sw-text-secondary);
  font-size: 14px;
}

.summary-card,
.contact-card {
  padding: 24px;
  border: 1px solid var(--sw-border-color);
  border-radius: 16px;
  background: var(--sw-card-bg);
}

.summary-heading {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--sw-border-color);
}

.summary-heading img {
  border-radius: 16px;
}

.summary-heading p {
  margin: 0;
  color: var(--sw-color-primary);
  font-size: 22px;
  font-weight: 700;
}

.summary-heading span {
  color: var(--sw-text-secondary);
  font-size: 14px;
}

.summary-list {
  margin: 8px 0 0;
}

.summary-list div {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--sw-border-color);
}

.summary-list div:last-child {
  border-bottom: 0;
}

.summary-list dt {
  color: var(--sw-text-secondary);
}

.summary-list dd {
  margin: 0;
  font-weight: 700;
}

.fact-strip {
  border-top: 1px solid var(--sw-border-color);
  border-bottom: 1px solid var(--sw-border-color);
  background: var(--sw-card-bg);
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.fact-grid div {
  min-height: 112px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 20px 24px;
  border-right: 1px solid var(--sw-border-color);
}

.fact-grid div:last-child {
  border-right: 0;
}

.fact-grid strong {
  color: var(--sw-color-primary);
  font-size: 18px;
}

.fact-grid span {
  color: var(--sw-text-secondary);
  font-size: 14px;
}

.section {
  padding: clamp(64px, 8vw, 96px) 0;
}

.section-muted {
  background: var(--sw-layer-bg);
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 40px;
  text-align: center;
}

.section-heading-left {
  margin-left: 0;
  text-align: left;
}

.section-heading h2,
.contact-card h2,
.document-title {
  margin: 0;
  color: var(--sw-color-primary);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.3;
}

.section-heading > p:last-child {
  margin: 14px 0 0;
  color: var(--sw-text-secondary);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.feature-card {
  grid-column: span 2;
  min-height: 220px;
  padding: 24px;
  border: 1px solid var(--sw-border-color);
  border-radius: 16px;
  background: var(--sw-card-bg);
}

.feature-card:nth-child(4) {
  grid-column: 2 / span 2;
}

.feature-card span {
  display: block;
  color: var(--sw-color-secondary);
  font-size: 13px;
  font-weight: 700;
}

.feature-card h3,
.service-grid h3 {
  margin: 28px 0 10px;
  color: var(--sw-color-primary);
  font-size: 20px;
}

.feature-card p,
.service-grid p {
  margin: 0;
  color: var(--sw-text-secondary);
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.screen-card {
  border: 1px solid var(--sw-border-color);
  border-radius: 16px;
  overflow: hidden;
  background: var(--sw-card-bg);
  text-decoration: none;
}

.screen-card:hover {
  border-color: var(--sw-color-secondary);
}

.screen-card figure {
  margin: 0;
}

.screen-window {
  aspect-ratio: 9 / 13;
  overflow: hidden;
  border-bottom: 1px solid var(--sw-border-color);
  background: #dfe6ea;
}

.screen-window img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.screen-card figcaption {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px 20px;
}

.screen-card figcaption strong {
  color: var(--sw-color-primary);
  font-size: 18px;
}

.screen-card figcaption span {
  color: var(--sw-text-secondary);
  font-size: 14px;
}

.workflow-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: clamp(32px, 6vw, 72px);
}

.workflow-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-list li {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--sw-border-color);
}

.workflow-list li > span {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: #ffffff;
  background: var(--sw-color-primary);
  font-size: 14px;
  font-weight: 700;
}

.workflow-list strong {
  color: var(--sw-color-primary);
}

.workflow-list p {
  margin: 2px 0 0;
  color: var(--sw-text-secondary);
  font-size: 14px;
}

.flow-figure {
  padding: 16px;
  border: 1px solid var(--sw-border-color);
  border-radius: 16px;
  background: var(--sw-card-bg);
  text-decoration: none;
}

.flow-figure img {
  border-radius: 12px;
}

.flow-figure span {
  display: block;
  padding: 12px 4px 0;
  color: var(--sw-text-secondary);
  text-align: center;
}

.section-dark {
  color: #ffffff;
  background: var(--sw-color-primary);
}

.section-heading-light h2,
.section-dark .section-kicker,
.service-grid h3,
.section-dark .section-heading > p:last-child {
  color: #ffffff;
}

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

.service-grid article {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
}

.service-grid h3 {
  margin-top: 0;
}

.service-grid p {
  color: #dbe6f0;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: start;
  gap: clamp(32px, 6vw, 72px);
}

.company-details {
  margin: 0;
  border-top: 1px solid var(--sw-border-color);
}

.company-details div {
  display: grid;
  grid-template-columns: minmax(120px, 180px) 1fr;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--sw-border-color);
}

.company-details dt {
  color: var(--sw-text-secondary);
}

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

.company-details a {
  color: var(--sw-color-primary);
}

.contact-card h2 {
  font-size: 28px;
}

.contact-card > p:not(.section-kicker):not(.contact-note) {
  color: var(--sw-text-secondary);
}

.contact-value {
  margin: 24px 0 16px;
  padding: 16px;
  border-radius: 12px;
  background: var(--sw-layer-bg);
}

.contact-value span,
.contact-value strong {
  display: block;
}

.contact-value span {
  color: var(--sw-text-secondary);
  font-size: 13px;
}

.contact-value strong,
.contact-value a {
  color: var(--sw-color-primary);
  font-size: 20px;
}

.contact-note {
  margin: 0;
  color: var(--sw-text-secondary);
  font-size: 13px;
}

.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--sw-border-color);
  background: var(--sw-card-bg);
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer strong {
  color: var(--sw-color-primary);
  font-size: 20px;
}

.site-footer p {
  margin: 4px 0 0;
  color: var(--sw-text-secondary);
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 20px;
}

.footer-links a {
  color: var(--sw-text-secondary);
  font-size: 13px;
}

.document-shell {
  padding: 56px 0 88px;
}

.document {
  max-width: 860px;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 56px);
  border: 1px solid var(--sw-border-color);
  border-radius: 16px;
  background: var(--sw-card-bg);
}

.document-meta {
  margin: 12px 0 36px;
  color: var(--sw-text-secondary);
  font-size: 14px;
}

.document h2 {
  margin: 36px 0 12px;
  color: var(--sw-color-primary);
  font-size: 22px;
}

.document p,
.document li {
  color: #425466;
}

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

.document table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
}

.document th,
.document td {
  padding: 12px;
  border: 1px solid var(--sw-border-color);
  text-align: left;
  vertical-align: top;
}

.document th {
  color: var(--sw-color-primary);
  background: var(--sw-layer-bg);
}

.document-notice {
  padding: 16px;
  border-left: 4px solid var(--sw-color-secondary);
  background: #edf7f7;
}

@media (max-width: 980px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .header-links {
    margin-left: auto;
  }

  .hero-grid,
  .workflow-layout,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .summary-card {
    max-width: 620px;
  }

  .fact-grid,
  .screen-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .fact-grid div:nth-child(2) {
    border-right: 0;
  }

  .fact-grid div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--sw-border-color);
  }

  .feature-card,
  .feature-card:nth-child(4) {
    grid-column: span 3;
  }
}

@media (max-width: 640px) {
  .site-header {
    position: static;
  }

  .header-inner {
    gap: 12px;
  }

  .header-links {
    gap: 10px;
  }

  .site-nav {
    gap: 18px;
  }

  .site-nav a {
    white-space: nowrap;
  }

  .hero {
    padding: 48px 0 56px;
  }

  h1 {
    font-size: 38px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .fact-grid,
  .feature-grid,
  .screen-grid,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .fact-grid div,
  .fact-grid div:nth-child(2),
  .fact-grid div:nth-child(-n + 2) {
    border-right: 0;
    border-bottom: 1px solid var(--sw-border-color);
  }

  .fact-grid div:last-child {
    border-bottom: 0;
  }

  .feature-card,
  .feature-card:nth-child(4) {
    grid-column: auto;
    min-height: 0;
  }

  .screen-window {
    aspect-ratio: 9 / 14;
  }

  .workflow-layout {
    gap: 40px;
  }

  .company-details div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

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

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

  .document-shell {
    padding: 24px 0 56px;
  }

  .document {
    border-radius: 12px;
  }

  .document-table-wrap {
    overflow-x: auto;
  }
}

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