:root {
  --ink: #152238;
  --muted: #5b6678;
  --line: #dfe5ed;
  --soft: #f4f7fb;
  --panel: #ffffff;
  --brand: #123b63;
  --green: #15745f;
  --orange: #c75f1a;
  --gold: #a77818;
  --shadow: 0 14px 34px rgba(21, 34, 56, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  background: #fff;
}

a {
  color: var(--brand);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1180px;
  min-height: 72px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--ink);
  text-decoration: none;
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}

.nav-links a {
  color: var(--ink);
  text-decoration: none;
}

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

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-size: 22px;
}

.btn,
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.btn-primary {
  color: #fff;
  background: var(--orange);
}

.btn-secondary {
  color: #fff;
  background: var(--brand);
}

.btn-ghost {
  color: var(--brand);
  background: #fff;
  border-color: var(--line);
}

.hero {
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  align-items: center;
  gap: 42px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 54px 24px 44px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
}

h1 {
  max-width: 760px;
  font-size: clamp(34px, 5vw, 58px);
  letter-spacing: 0;
}

h2 {
  font-size: 30px;
}

h3 {
  font-size: 20px;
}

.lead {
  max-width: 760px;
  margin: 18px 0 0;
  color: #36445a;
  font-size: 19px;
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  max-width: 1180px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
  transform: translateY(28px);
}

.trust-item {
  min-height: 116px;
  padding: 18px;
  background: #fff;
}

.trust-item strong {
  display: block;
  font-size: 22px;
}

.trust-item span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.fact {
  min-height: 92px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.fact strong {
  display: block;
  font-size: 18px;
}

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

.hero-media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.hero-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.media-caption {
  margin: 0;
  padding: 12px 14px;
  color: var(--muted);
  font-size: 13px;
}

.section {
  padding: 58px 24px;
}

.section.alt {
  background: var(--soft);
}

.section-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.section-heading p {
  max-width: 680px;
  margin: 8px 0 0;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 18px;
}

.grid.projects {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  min-height: 100%;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.card h3 {
  margin-bottom: 10px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.card a {
  display: inline-block;
  margin-top: 14px;
  font-weight: 800;
}

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

.credential-figure {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.credential-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #f8fafc;
  border-bottom: 1px solid var(--line);
}

.credential-figure figcaption {
  display: grid;
  gap: 6px;
  min-height: 128px;
  padding: 16px;
}

.credential-figure strong {
  font-size: 17px;
}

.credential-figure span {
  color: var(--muted);
  font-size: 14px;
}

.role-card {
  border-top: 4px solid var(--green);
}

.role-card strong {
  display: block;
  margin-bottom: 8px;
}

.evidence-list {
  display: grid;
  gap: 14px;
}

.evidence-item {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.evidence-label {
  font-weight: 800;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-top: 8px;
  padding: 3px 10px;
  border-radius: 999px;
  color: #123b63;
  background: #e8eef5;
  font-size: 13px;
  font-weight: 800;
}

.warning-badge {
  color: #7a3a00;
  background: #fff2df;
}

.timeline {
  display: grid;
  gap: 12px;
  counter-reset: step;
}

.timeline-item {
  position: relative;
  padding: 16px 18px 16px 56px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.timeline-item::before {
  position: absolute;
  top: 16px;
  left: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  color: #fff;
  background: var(--green);
  font-size: 13px;
  font-weight: 800;
  counter-increment: step;
  content: counter(step);
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.faq-list summary {
  padding: 16px 18px;
  font-weight: 800;
  cursor: pointer;
}

.faq-list details[open] summary {
  border-bottom: 1px solid var(--line);
}

.faq-list details p {
  margin: 0;
  padding: 16px 18px;
  color: var(--muted);
}

.contact-card {
  padding: 24px;
  border: 1px solid #b8dbcf;
  border-radius: 8px;
  background: #eef8f4;
}

.contact-card strong {
  display: block;
  font-size: 22px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 10px;
  border-radius: 999px;
  color: #134234;
  background: #e5f2ed;
  font-size: 13px;
  font-weight: 700;
}

.answer-summary {
  padding: 22px;
  border-left: 5px solid var(--green);
  background: #eef8f4;
}

.grid + .answer-summary {
  margin-top: 24px;
}

.answer-summary p {
  margin: 10px 0 0;
}

.contact-band {
  background: var(--brand);
  color: #fff;
}

.contact-band .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
}

.contact-band p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.82);
}

.contact-band a {
  color: #fff;
}

.contact-band .btn-ghost {
  color: var(--brand);
  background: #fff;
  border-color: #fff;
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  table-layout: fixed;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: #fff;
  background: var(--brand);
}

th:first-child,
td:first-child {
  width: 132px;
}

tr:last-child td {
  border-bottom: 0;
}

.page-hero {
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}

.page-hero .section-inner {
  padding-top: 48px;
  padding-bottom: 42px;
}

.page-hero h1 {
  font-size: clamp(32px, 4vw, 48px);
}

.content {
  max-width: 920px;
}

.content > * + * {
  margin-top: 18px;
}

.content ul {
  padding-left: 22px;
}

.selector {
  display: grid;
  gap: 18px;
}

.selector-group {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.choice-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.choice {
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: #fff;
  cursor: pointer;
}

.choice.is-active {
  color: #fff;
  background: var(--green);
  border-color: var(--green);
}

.result-panel {
  padding: 22px;
  border: 1px solid #b8dbcf;
  border-radius: 8px;
  background: #eef8f4;
}

.site-footer {
  padding: 36px 24px 88px;
  color: rgba(255, 255, 255, 0.78);
  background: #0d1a2b;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 28px;
  max-width: 1180px;
  margin: 0 auto;
}

.footer-inner a {
  color: #fff;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.mobile-contact {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 30;
  display: none;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  background: #fff;
}

.mobile-contact a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.mobile-contact a + a {
  border-left: 1px solid var(--line);
}

@media (max-width: 980px) {
  .nav {
    min-height: 64px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    position: absolute;
    top: 64px;
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow);
  }

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

  .hero-inner,
  .contact-band .section-inner,
  .footer-inner {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 680px) {
  body {
    padding-bottom: 64px;
  }

  .section,
  .hero-inner {
    padding-right: 18px;
    padding-left: 18px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 18px;
  }

  .hero-facts,
  .trust-strip,
  .grid.projects,
  .grid.three,
  .grid.two,
  .credential-gallery {
    grid-template-columns: 1fr;
  }

  .trust-strip {
    transform: none;
    margin-top: 18px;
  }

  .evidence-item {
    grid-template-columns: 1fr;
  }

  .section-heading {
    display: block;
  }

  .btn {
    width: 100%;
    min-height: 52px;
    padding-right: 10px;
    padding-left: 10px;
    text-align: center;
  }

  .mobile-contact {
    display: none;
  }

  .mobile-contact.is-visible {
    display: grid;
  }
}