:root {
  --z42a8aprimary: #0f766e;
  --z42a8aprimary_dark: #0b5a54;
  --z42a8aaccent: #f59e0b;
  --z42a8atext: #163047;
  --z42a8amuted: #5b7288;
  --z42a8abg: #f4f8fb;
  --z42a8acard: rgba(255, 255, 255, 0.88);
  --z42a8aborder: rgba(15, 118, 110, 0.14);
  --z42a8ashadow: 0 18px 50px rgba(24, 60, 88, 0.12);
  --z42a8aradius: 22px;
}

* {
  box-sizing: border-box;
}

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

body.z42a8abody {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--z42a8atext);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(245, 158, 11, 0.15), transparent 22%),
    linear-gradient(180deg, #f7fbff 0%, #edf5fb 45%, #f4f8fb 100%);
  line-height: 1.7;
  overflow-x: clip;
  overflow-wrap: anywhere;
}

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

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

.z42a8acontainer {
  width: min(1180px, calc(100% - clamp(24px, 5vw, 32px)));
  margin: 0 auto;
  padding-left: env(safe-area-inset-left, 0);
  padding-right: env(safe-area-inset-right, 0);
}

.z42a8aheader {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.7);
  padding-top: env(safe-area-inset-top, 0);
}

.z42a8anavbar {
  min-height: 76px;
}

.z42a8anavbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 76px;
}

.z42a8asite-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 1px;
  flex: 1;
  min-width: 0;
}

.z42a8anav-toggle {
  display: none;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(15, 118, 110, 0.22);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--z42a8atext);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.z42a8anav-toggle:hover {
  border-color: rgba(15, 118, 110, 0.4);
  background: #fff;
}

.z42a8anav-toggle:focus-visible {
  outline: 2px solid var(--z42a8aprimary);
  outline-offset: 2px;
}

.z42a8anav-toggle-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 22px;
}

.z42a8anav-toggle-bar {
  display: block;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.2s ease;
  transform-origin: center;
}

body.z42a8anav-open .z42a8anav-toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

body.z42a8anav-open .z42a8anav-toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

body.z42a8anav-open .z42a8anav-toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.z42a8anav-wrap {
  display: flex;
  align-items: center;
}

.z42a8anav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.z42a8anav-link {
  color: var(--z42a8amuted);
  font-size: 15px;
  padding: 8px 0;
  transition: color 0.2s ease;
}

.z42a8anav-link:hover {
  color: var(--z42a8aprimary);
}

.z42a8anav-backdrop {
  display: none;
}

.z42a8ahero,
.z42a8asection {
  position: relative;
}

.z42a8ahero {
  padding: 72px 0 48px;
}

.z42a8ahero-grid,
.z42a8acontact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: center;
}

.z42a8abadge,
.z42a8asection-tag {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--z42a8aprimary);
  font-size: 13px;
  font-weight: 700;
}

.z42a8ahero-title,
.z42a8asection-heading h2,
.z42a8ashowcase-header h2,
.z42a8acontact-text h2 {
  margin: 18px 0 14px;
  line-height: 1.2;
  font-size: clamp(30px, 4vw, 52px);
}

.z42a8asection-heading h2,
.z42a8ashowcase-header h2,
.z42a8acontact-text h2 {
  font-size: clamp(26px, 3vw, 38px);
}

.z42a8ahero-text,
.z42a8asection-heading p,
.z42a8acontact-text p,
.z42a8acard p,
.z42a8atimeline-item p {
  color: var(--z42a8amuted);
  margin: 0;
}

.z42a8ahero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 24px;
}

.z42a8abutton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.z42a8abutton:hover {
  transform: translateY(-2px);
}

.z42a8abutton-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--z42a8aprimary), #109b8f);
  box-shadow: 0 14px 28px rgba(15, 118, 110, 0.24);
}

.z42a8abutton-secondary {
  border-color: rgba(15, 118, 110, 0.22);
  background: rgba(255, 255, 255, 0.8);
  color: var(--z42a8aprimary);
}

.z42a8abutton-block {
  width: 100%;
}

.z42a8ahighlights,
.z42a8acard-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.z42a8ahighlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.z42a8ahighlights li,
.z42a8acard-list li {
  position: relative;
  padding-left: 18px;
}

.z42a8ahighlights li::before,
.z42a8acard-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--z42a8aaccent);
}

.z42a8acard-list {
  display: grid;
  gap: 6px;
  margin-top: 14px;
  color: var(--z42a8amuted);
}

.z42a8ahero-card,
.z42a8acard,
.z42a8atimeline-item,
.z42a8aform {
  background: var(--z42a8acard);
  border: 1px solid var(--z42a8aborder);
  border-radius: var(--z42a8aradius);
  box-shadow: var(--z42a8ashadow);
}

.z42a8ahero-card {
  padding: 22px;
}

.z42a8aimage-slot {
  min-height: 200px;
  border-radius: 18px;
  border: 2px dashed rgba(15, 118, 110, 0.25);
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(245, 158, 11, 0.09)),
    #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--z42a8aprimary_dark);
  font-weight: 700;
  padding: 18px;
}

.z42a8aimage-slot-large {
  min-height: 360px;
}

.z42a8aimage-slot--photo {
  padding: 0;
  overflow: hidden;
  border-style: solid;
  border-color: rgba(15, 118, 110, 0.22);
  background: #e8f2f1;
}

.z42a8aimage-slot--photo .z42a8aimage-slot-img {
  display: block;
  width: 100%;
  min-height: 360px;
  object-fit: cover;
  object-position: center;
}

.z42a8amaterials-side .z42a8aimage-slot.z42a8aimage-slot--photo {
  min-height: 280px;
}

.z42a8amaterials-side .z42a8aimage-slot--photo .z42a8aimage-slot-img {
  min-height: 280px;
}

.z42a8astats-panel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.z42a8astat-item {
  padding: 16px 12px;
  text-align: center;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
}

.z42a8astat-item strong {
  display: block;
  font-size: 20px;
  color: var(--z42a8aprimary);
}

.z42a8astat-item span {
  font-size: 13px;
  color: var(--z42a8amuted);
}

.z42a8asection {
  padding: 42px 0;
}

.z42a8amaterials-item {
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--z42a8aborder);
  border-radius: 18px;
  box-shadow: var(--z42a8ashadow);
}

.z42a8amaterials-item strong {
  display: block;
  margin-bottom: 6px;
  color: var(--z42a8aprimary);
}

.z42a8amaterials-item span {
  color: var(--z42a8amuted);
  font-size: 14px;
}

.z42a8asection-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.z42a8acard-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.z42a8acard {
  padding: 26px 22px;
}

.z42a8acard h3,
.z42a8atimeline-item h3 {
  margin: 14px 0 10px;
  font-size: 20px;
}

.z42a8acard-icon {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.12), rgba(245, 158, 11, 0.18));
  color: var(--z42a8aprimary);
  font-weight: 700;
}

.z42a8ashowcase-frame {
  background: var(--z42a8acard);
  border: 1px solid var(--z42a8aborder);
  border-radius: var(--z42a8aradius);
  box-shadow: var(--z42a8ashadow);
  overflow: hidden;
}

.z42a8ashowcase-header {
  padding: 28px 28px 24px;
  border-bottom: 1px solid var(--z42a8aborder);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(237, 245, 251, 0.55) 100%);
}

.z42a8ashowcase-header h2 {
  margin: 16px 0 12px;
}

.z42a8ashowcase-header .z42a8ashowcase-lead {
  margin: 0;
  max-width: 920px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--z42a8amuted);
}

.z42a8ashowcase-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  align-items: stretch;
}

.z42a8ashowcase-point {
  margin: 0;
  padding: 24px 22px 26px;
  border-right: 1px solid var(--z42a8aborder);
  background: rgba(255, 255, 255, 0.72);
}

.z42a8ashowcase-point:last-child {
  border-right: none;
}

.z42a8ashowcase-point-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.z42a8ashowcase-point-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.12), rgba(245, 158, 11, 0.16));
  color: var(--z42a8aprimary);
  font-size: 15px;
  font-weight: 700;
}

.z42a8ashowcase-point-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--z42a8atext);
  line-height: 1.3;
}

.z42a8ashowcase-point-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--z42a8amuted);
}

.z42a8ashowcase-footer {
  padding: 18px 28px 22px;
  border-top: 1px solid var(--z42a8aborder);
  background: rgba(15, 118, 110, 0.06);
}

.z42a8ashowcase-footer .z42a8ashowcase-note {
  margin: 0;
  max-width: 960px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--z42a8amuted);
}

.z42a8atimeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.z42a8atimeline-item {
  padding: 24px 20px;
}

.z42a8atimeline-step {
  display: inline-block;
  color: var(--z42a8aprimary);
  font-size: 13px;
  font-weight: 700;
}

.z42a8amaterials-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 28px;
  align-items: center;
}

.z42a8amaterials-panel {
  padding-right: 8px;
}

.z42a8amaterials-panel h2 {
  margin: 18px 0 12px;
  font-size: clamp(26px, 3vw, 38px);
}

.z42a8amaterials-panel p {
  margin: 0 0 20px;
  color: var(--z42a8amuted);
}

.z42a8amaterials-list {
  display: grid;
  gap: 14px;
}

.z42a8amaterials-item {
  padding: 18px 18px;
}

.z42a8aform {
  padding: 28px;
}

.z42a8aform {
  display: grid;
  gap: 16px;
}

.z42a8aform-label {
  display: grid;
  gap: 8px;
  font-weight: 700;
}

.z42a8aform-input,
.z42a8aform-textarea {
  width: 100%;
  border: 1px solid rgba(15, 118, 110, 0.18);
  border-radius: 14px;
  background: #fff;
  padding: 14px 16px;
  font: inherit;
  color: var(--z42a8atext);
}

.z42a8aform-textarea {
  min-height: 120px;
  resize: vertical;
}

.z42a8afooter {
  padding: 24px 0 34px;
  color: var(--z42a8amuted);
  text-align: center;
}

.z42a8afooter-copy {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid rgba(15, 118, 110, 0.12);
}

.z42a8afooter-meta {
  margin: 0;
}

.z42a8afooter-meta p {
  margin: 0 0 10px;
}

.z42a8afooter-meta p:last-child {
  margin-bottom: 0;
}

.z42a8afooter-meta a strong {
  font-weight: 700;
  color: var(--z42a8aprimary);
}

.z42a8afooter-sep {
  opacity: 0.55;
}

.z42a8afooter-links {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid rgba(15, 118, 110, 0.12);
  font-size: 14px;
  color: var(--z42a8amuted);
}

.z42a8arelate-sites {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  justify-content: center;
}

.z42a8arelate-sites a {
  color: var(--z42a8amuted);
}

.z42a8arelate-sites a:hover {
  color: var(--z42a8aprimary);
}

@media (max-width: 1024px) {
  .z42a8ahero-grid,
  .z42a8acontact-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .z42a8ahero {
    padding-top: 56px;
    padding-bottom: 40px;
  }

  .z42a8acard-grid,
  .z42a8atimeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .z42a8ashowcase-points {
    grid-template-columns: 1fr;
  }

  .z42a8ashowcase-point {
    border-right: none;
    border-bottom: 1px solid var(--z42a8aborder);
  }

  .z42a8ashowcase-point:last-of-type {
    border-bottom: none;
  }

  .z42a8amaterials-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .z42a8ahero-grid,
  .z42a8acontact-grid,
  .z42a8acard-grid,
  .z42a8atimeline {
    grid-template-columns: 1fr;
  }

  .z42a8astats-panel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }

  .z42a8astat-item {
    padding: 12px 8px;
  }

  .z42a8astat-item strong {
    font-size: clamp(16px, 4vw, 20px);
  }

  .z42a8astat-item span {
    font-size: 12px;
    line-height: 1.35;
  }

  .z42a8anavbar {
    position: relative;
    z-index: 1001;
    padding: 8px 0 0;
  }

  .z42a8anavbar-inner {
    flex-wrap: wrap;
    align-items: center;
    min-height: 60px;
    row-gap: 0;
  }

  .z42a8asite-title {
    font-size: clamp(17px, 4.5vw, 22px);
    line-height: 1.35;
    text-align: left;
    flex: 1;
  }

  .z42a8anav-toggle {
    display: inline-flex;
    order: 2;
  }

  .z42a8anav-wrap {
    order: 3;
    flex-basis: 100%;
    width: 100%;
    align-items: stretch;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition:
      max-height 0.35s ease,
      opacity 0.25s ease,
      visibility 0.25s ease;
    border-top: 1px solid transparent;
    margin-top: 0;
    padding-top: 0;
  }

  body.z42a8anav-open .z42a8anav-wrap {
    max-height: min(420px, 70vh);
    opacity: 1;
    visibility: visible;
    border-top-color: rgba(15, 118, 110, 0.14);
    margin-top: 10px;
    padding-top: 10px;
    padding-bottom: 12px;
  }

  .z42a8anav {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .z42a8anav-link {
    padding: 14px 4px;
    min-height: 48px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(15, 118, 110, 0.08);
    font-size: 16px;
    color: var(--z42a8atext);
  }

  .z42a8anav-link:last-child {
    border-bottom: none;
  }

  .z42a8anav-link:hover,
  .z42a8anav-link:focus-visible {
    color: var(--z42a8aprimary);
  }

  .z42a8anav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 998;
    margin: 0;
    padding: 0;
    border: 0;
    background: rgba(22, 48, 71, 0.42);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  body.z42a8anav-open .z42a8anav-backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  body.z42a8anav-open {
    overflow: hidden;
  }

  @media (prefers-reduced-motion: reduce) {
    .z42a8anav-wrap,
    .z42a8anav-toggle-bar,
    .z42a8anav-backdrop {
      transition: none;
    }
  }

  .z42a8ahero {
    padding-top: 36px;
    padding-bottom: 36px;
  }

  .z42a8ahero-title {
    font-size: clamp(26px, 7vw, 34px);
  }

  .z42a8asection {
    padding: 32px 0;
  }

  .z42a8ahero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .z42a8ahero-actions .z42a8abutton {
    width: 100%;
    justify-content: center;
  }

  .z42a8aimage-slot-large {
    min-height: 240px;
  }

  .z42a8aimage-slot--photo .z42a8aimage-slot-img {
    min-height: 240px;
  }

  .z42a8ashowcase-header,
  .z42a8ashowcase-footer {
    padding-left: 18px;
    padding-right: 18px;
  }

  .z42a8ashowcase-point {
    padding-left: 18px;
    padding-right: 18px;
  }

  .z42a8aform {
    padding: 22px 18px;
  }

  .z42a8afooter {
    padding-bottom: calc(28px + env(safe-area-inset-bottom, 0));
  }
}

@media (max-width: 380px) {
  .z42a8astats-panel {
    grid-template-columns: 1fr;
  }

  .z42a8astat-item {
    padding: 14px 16px;
  }
}