:root {
  --ink: #1f2933;
  --muted: #52616b;
  --line: #d9e2ec;
  --paper: #ffffff;
  --soft: #f5f8f6;
  --green: #2f7d4d;
  --green-dark: #1f5f3c;
  --blue: #116b8f;
  --gold: #c6922e;
  --shadow: 0 12px 28px rgba(31, 41, 51, 0.12);
  --content-max: 1180px;
  --page-pad: max(24px, calc((100vw - var(--content-max)) / 2 + 24px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 12px var(--page-pad);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.brand {
  flex: 0 1 auto;
  min-width: 0;
}

.brand img {
  width: 230px;
  height: auto;
}

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

.site-nav a {
  padding: 10px 13px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 15px;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--green-dark);
  background: #eef7f1;
}

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

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 84px var(--page-pad) 96px;
  color: #fff;
  background-image: linear-gradient(90deg, rgba(19, 39, 48, 0.86), rgba(19, 39, 48, 0.46)), var(--hero-image);
  background-size: cover;
  background-position: center;
}

.hero-content {
  width: min(760px, 100%);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--gold);
  font-weight: 700;
  font-size: 14px;
}

.hero h1,
.page-title h1 {
  margin: 0;
  font-size: 44px;
  line-height: 1.2;
  letter-spacing: 0;
}

.hero p {
  max-width: 720px;
  margin: 20px 0 0;
  font-size: 18px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-weight: 700;
}

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

.button.secondary {
  background: #fff;
  color: var(--green-dark);
  border-color: var(--line);
}

.quick-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 0 var(--page-pad);
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.quick-strip div {
  padding: 24px 28px;
  background: #fff;
}

.quick-strip div + div {
  border-left: 1px solid var(--line);
}

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

.quick-strip strong {
  color: var(--ink);
  font-size: 17px;
}

.quick-strip span {
  margin-top: 2px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 76px var(--page-pad);
}

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

.intro-band {
  background: linear-gradient(135deg, #eef7f1 0%, #f7fbf9 52%, #ffffff 100%);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
}

.section-heading h2,
.contact-band h2,
.contact-panel h2,
.detail-main h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: 0;
}

.text-link {
  color: var(--blue);
  font-weight: 700;
}

.intro-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(0, 1.18fr);
  gap: 48px;
  align-items: start;
}

.intro-lead {
  padding-left: 22px;
  border-left: 4px solid var(--green);
}

.intro-lead h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.22;
  letter-spacing: 0;
}

.intro-lead p:not(.eyebrow) {
  margin: 18px 0 0;
  color: var(--muted);
}

.intro-copy {
  display: grid;
  gap: 14px;
  color: var(--muted);
}

.intro-copy p {
  margin: 0;
  font-size: 17px;
}

.intro-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 36px;
}

.intro-points div {
  padding: 22px;
  border: 1px solid #d5e7dd;
  border-top: 4px solid var(--green);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
}

.intro-points strong,
.intro-points span {
  display: block;
}

.intro-points strong {
  color: var(--green-dark);
  font-size: 18px;
}

.intro-points span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.about-text {
  max-width: 900px;
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}

.item-card {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(31, 41, 51, 0.05);
}

.card-image {
  display: block;
  aspect-ratio: 4 / 3;
  background: #e8eef0;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: 18px;
}

.card-body h3 {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.35;
}

.card-body p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.mini-cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
}

.certificate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.mini-cert,
.certificate-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

.mini-cert {
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 14px rgba(31, 41, 51, 0.05);
}

.certificate-image-link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-in;
}

.certificate-image-link:focus-visible {
  outline: 3px solid rgba(17, 107, 143, 0.32);
  outline-offset: 3px;
}

.certificate-image-link::after {
  content: "";
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: rgba(31, 95, 60, 0.88);
  box-shadow: 0 6px 18px rgba(31, 41, 51, 0.18);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.certificate-image-link::before {
  content: "";
  position: absolute;
  right: 23px;
  bottom: 23px;
  z-index: 1;
  width: 10px;
  height: 10px;
  border: 2px solid #fff;
  border-radius: 50%;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.certificate-image-link:hover::after,
.certificate-image-link:hover::before,
.certificate-image-link:focus-visible::after,
.certificate-image-link:focus-visible::before {
  opacity: 1;
  transform: translateY(0);
}

.mini-cert img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.mini-cert .certificate-image-link {
  aspect-ratio: 4 / 3;
  min-height: 0;
  padding: 18px;
  border-bottom: 1px solid var(--line);
  background: #f8faf8;
}

.mini-cert h3,
.certificate-card h2,
.certificate-card p {
  display: block;
  margin: 0;
  padding: 12px 14px;
}

.mini-cert h3 {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.35;
  text-align: center;
}

.certificate-card img {
  width: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.certificate-card .certificate-image-link {
  aspect-ratio: 3 / 4;
  background: #f8faf8;
}

.certificate-card h2 {
  font-size: 18px;
  line-height: 1.35;
}

.certificate-card p {
  padding-top: 0;
  color: var(--muted);
  font-size: 14px;
}

.image-modal[hidden] {
  display: none;
}

.image-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(16, 24, 32, 0.82);
}

.image-modal-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: transparent;
  cursor: zoom-out;
}

.image-modal-panel {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  place-items: center;
  width: min(1180px, 94vw);
  height: min(92vh, 920px);
  padding: 0;
  background: transparent;
}

.image-modal-image-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 0;
}

.image-modal-panel img {
  width: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

.image-modal-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 42px;
  margin-top: 12px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
}

.image-modal-title,
.image-modal-count {
  margin: 0;
  font-weight: 700;
  text-align: center;
}

.image-modal-close {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 2;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.image-modal-nav {
  position: fixed;
  top: 50%;
  z-index: 2;
  display: none;
  width: 46px;
  height: 58px;
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  font-size: 42px;
  line-height: 1;
  transform: translateY(-50%);
  cursor: pointer;
}

.image-modal-prev {
  left: 22px;
}

.image-modal-next {
  right: 22px;
}

body.modal-open {
  overflow: hidden;
}

.contact-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: 56px var(--page-pad);
  color: #fff;
  background: var(--green-dark);
}

.contact-band p {
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.82);
}

.about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.48fr);
  gap: 56px;
  align-items: center;
  padding: 84px var(--page-pad) 72px;
  background: linear-gradient(135deg, #f1f8f4 0%, #ffffff 62%);
  border-bottom: 1px solid var(--line);
}

.about-hero-copy {
  max-width: 760px;
}

.about-hero h1 {
  margin: 0;
  font-size: 44px;
  line-height: 1.18;
  letter-spacing: 0;
}

.about-hero-copy > p:not(.eyebrow) {
  max-width: 700px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 19px;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.about-tags span {
  padding: 7px 12px;
  border: 1px solid #cfe5d7;
  border-radius: 999px;
  background: #fff;
  color: var(--green-dark);
  font-weight: 700;
  font-size: 14px;
}

.about-hero-mark {
  justify-self: end;
  width: min(340px, 100%);
  margin: 0;
  padding: 34px 30px;
  border: 1px solid #d5e7dd;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 14px 32px rgba(31, 41, 51, 0.08);
  text-align: center;
}

.about-hero-mark img {
  width: min(220px, 100%);
  margin: 0 auto;
}

.about-hero-mark figcaption {
  margin-top: 18px;
  color: var(--green-dark);
  font-weight: 700;
}

.page-title {
  padding: 76px var(--page-pad) 56px;
  background: var(--soft);
}

.page-title p {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.about-layout,
.contact-layout,
.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 42px;
  align-items: start;
}

.about-mark {
  margin: 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.about-overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
  gap: 46px;
  align-items: start;
}

.about-narrative {
  max-width: 820px;
}

.about-narrative h2 {
  margin: 0 0 22px;
  font-size: 34px;
  line-height: 1.25;
  letter-spacing: 0;
}

.about-narrative p:not(.eyebrow) {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 17px;
}

.about-scope {
  padding: 26px;
  border: 1px solid #d5e7dd;
  border-top: 4px solid var(--green);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 26px rgba(31, 41, 51, 0.06);
}

.about-scope h2 {
  margin: 0 0 16px;
  font-size: 24px;
  line-height: 1.25;
}

.about-scope .clean-list {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.about-scope .button {
  width: 100%;
}

.about-capabilities {
  padding-top: 0;
}

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

.about-capability-grid div {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.about-capability-grid strong {
  display: block;
  color: var(--green-dark);
  font-size: 19px;
}

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

.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.process-grid div,
.contact-panel,
.map-panel,
.detail-main {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.process-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green-dark);
}

.about-process-grid div {
  position: relative;
  padding-top: 52px;
}

.about-process-grid span {
  position: absolute;
  top: 18px;
  left: 24px;
  color: rgba(31, 95, 60, 0.2);
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
}

.process-grid p,
.detail-main p,
.clean-list,
.contact-panel dd {
  margin: 0;
  color: var(--muted);
}

.contact-panel dl {
  display: grid;
  gap: 18px;
  margin: 24px 0 0;
}

.contact-panel dt {
  color: var(--green-dark);
  font-weight: 700;
}

.contact-panel dd {
  margin-top: 4px;
}

.map-panel {
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: end;
  color: #fff;
  background: linear-gradient(0deg, rgba(17, 107, 143, 0.92), rgba(47, 125, 77, 0.78)), url("/uploads/allimg/20210321/1-2103211634254D.jpg");
  background-size: cover;
  background-position: center;
}

.map-panel span {
  color: #dceeff;
}

.map-panel strong {
  margin-top: 8px;
  font-size: 24px;
}

.map-panel p {
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.84);
}

.detail-main {
  position: sticky;
  top: 98px;
}

.clean-list {
  padding-left: 20px;
  margin: 18px 0 22px;
}

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

.gallery-item {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #f8faf8;
}

.not-found {
  min-height: 60vh;
  padding: 120px var(--page-pad);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #17222b;
  color: #fff;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px var(--page-pad);
}

.footer-inner p,
.footer-meta {
  color: rgba(255, 255, 255, 0.72);
}

.footer-meta {
  display: grid;
  gap: 8px;
  text-align: right;
}

@media (max-width: 1120px) {
  .site-header {
    align-items: flex-start;
  }

  .site-nav {
    max-width: 620px;
  }

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

  .detail-layout {
    grid-template-columns: minmax(0, 0.95fr) minmax(300px, 1.05fr);
    gap: 30px;
  }
}

@media (max-width: 900px) {
  .site-header {
    min-height: 68px;
    align-items: center;
  }

  .brand img {
    width: 205px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-toggle span {
    transition: transform 0.18s ease, opacity 0.18s ease;
  }

  .site-nav {
    position: absolute;
    left: var(--page-pad);
    right: var(--page-pad);
    top: 66px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    max-width: none;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-nav a {
    width: 100%;
    padding: 12px 14px;
  }

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

  .hero h1,
  .page-title h1 {
    font-size: 38px;
  }

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

  .about-layout,
  .about-hero,
  .about-overview,
  .contact-layout,
  .detail-layout,
  .intro-layout {
    grid-template-columns: 1fr;
  }

  .about-hero-mark {
    justify-self: start;
  }

  .about-capability-grid {
    grid-template-columns: 1fr;
  }

  .detail-main {
    position: static;
  }

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

  .contact-band,
  .footer-inner {
    align-items: start;
    flex-direction: column;
  }

  .footer-meta {
    text-align: left;
  }
}

@media (max-width: 640px) {
  .about-hero {
    gap: 34px;
    padding-top: 56px;
    padding-bottom: 52px;
  }

  .about-hero h1 {
    font-size: 34px;
  }

  .about-hero-copy > p:not(.eyebrow) {
    font-size: 16px;
  }

  .about-tags {
    gap: 8px;
  }

  .about-tags span {
    font-size: 13px;
  }

  .about-narrative h2 {
    font-size: 30px;
  }

  .hero {
    min-height: auto;
    padding-top: 64px;
    padding-bottom: 72px;
    background-image: linear-gradient(90deg, rgba(19, 39, 48, 0.9), rgba(19, 39, 48, 0.58)), var(--hero-image);
  }

  .hero h1,
  .page-title h1 {
    font-size: 34px;
  }

  .hero p,
  .page-title p {
    font-size: 16px;
  }

  .intro-lead h2 {
    font-size: 30px;
  }

  .intro-copy p {
    font-size: 16px;
  }

  .intro-points {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .quick-strip {
    grid-template-columns: 1fr;
  }

  .quick-strip div {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .quick-strip div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .section {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .page-title {
    padding-top: 56px;
    padding-bottom: 42px;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
    gap: 8px;
  }

  .detail-gallery {
    grid-template-columns: 1fr;
  }

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

  .button {
    width: 100%;
  }

  .map-panel {
    min-height: 220px;
  }

  .image-modal {
    padding: 16px;
  }

  .image-modal-panel {
    width: 100%;
    height: 90vh;
  }

  .image-modal-panel img {
    max-height: 100%;
  }

  .image-modal-caption {
    max-width: calc(100vw - 32px);
    border-radius: 8px;
  }

  .image-modal-close {
    top: 14px;
    right: 14px;
  }
}

@media (max-width: 380px) {
  :root {
    --page-pad: 18px;
  }

  body {
    font-size: 15px;
  }

  .brand img {
    width: 174px;
  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }

  .hero h1,
  .about-hero h1,
  .page-title h1 {
    font-size: 30px;
  }

  .section-heading h2,
  .intro-lead h2,
  .contact-band h2,
  .contact-panel h2,
  .detail-main h2 {
    font-size: 26px;
  }

  .process-grid div,
  .contact-panel,
  .map-panel,
  .detail-main {
    padding: 20px;
  }
}