:root {
  --ink: #18241f;
  --muted: #5f6c65;
  --line: #d9ded7;
  --paper: #fbfaf6;
  --wash: #f2f5ef;
  --teal: #0c6f68;
  --teal-dark: #084f4b;
  --ochre: #bf8434;
  --leaf: #738d59;
  --brand-blue: #12304a;
  --white: #ffffff;
  --shadow: 0 16px 40px rgba(24, 36, 31, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 12px 6vw;
  background: rgba(251, 250, 246, 0.92);
  border-bottom: 1px solid rgba(217, 222, 215, 0.72);
  backdrop-filter: blur(14px);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 24px rgba(24, 36, 31, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 180px;
}

.brand-mark-img {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(18, 48, 74, 0.16);
}

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

.brand strong {
  font-size: 18px;
  line-height: 1.2;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: #2f3a35;
  font-size: 15px;
}

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

.nav-cta {
  padding: 10px 16px;
  color: var(--white);
  background: var(--teal);
  border-radius: 6px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: 78vh;
  overflow: hidden;
  background: #e9eee8;
}

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

.hero-shade {
  position: absolute;
  inset: 0;
  background: rgba(251, 250, 246, 0.2);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: min(780px, 88vw);
  min-height: 78vh;
  padding: 58px 0 78px;
  margin-left: 6vw;
}

.hero-logo-lockup {
  width: min(360px, 72vw);
  max-width: 100%;
  margin-bottom: 24px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 12px 26px rgba(24, 36, 31, 0.08);
}

.hero-brand-logo {
  width: 100%;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: 64px;
  line-height: 1.05;
}

.hero-lead {
  width: min(640px, 100%);
  margin: 24px 0 0;
  color: #28342f;
  font-size: 22px;
  line-height: 1.75;
  text-shadow: 0 1px 18px rgba(251, 250, 246, 0.9);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
}

.button.primary {
  color: var(--white);
  background: var(--teal);
  box-shadow: 0 10px 24px rgba(12, 111, 104, 0.22);
}

.button.secondary {
  color: var(--teal-dark);
  background: rgba(255, 255, 255, 0.86);
  border-color: rgba(12, 111, 104, 0.28);
}

.signal-band {
  background: var(--teal-dark);
  color: var(--white);
}

.section-shell {
  width: min(1180px, 88vw);
  margin: 0 auto;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.signal-grid div {
  min-height: 132px;
  padding: 26px 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

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

.signal-grid span {
  display: block;
  color: #d5b174;
  font-size: 13px;
  font-weight: 800;
}

.signal-grid strong {
  display: block;
  margin-top: 8px;
  font-size: 20px;
}

.signal-grid p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.65;
}

.section {
  padding: 92px 0;
}

.services-section,
.knowledge-section,
.team-section {
  background: var(--paper);
}

.issue-section,
.sectors-section,
.company-section,
.faq-section {
  background: var(--wash);
}

.section-heading {
  width: min(780px, 100%);
  margin-bottom: 38px;
}

.section-heading.narrow {
  width: min(700px, 100%);
  margin-inline: auto;
  text-align: center;
}

.section h2 {
  margin: 0;
  font-size: 38px;
  line-height: 1.25;
}

.section-heading p:not(.eyebrow),
.company-copy p,
.issue-layout > div > p,
.sector-copy p,
.about-layout > div > p,
.contact-copy > p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.company-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.84fr);
  gap: 56px;
  align-items: center;
}

.company-copy h2 {
  margin: 0;
  font-size: 38px;
  line-height: 1.25;
}

.company-proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.company-proof-grid article {
  min-height: 168px;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.company-proof-grid span {
  color: var(--ochre);
  font-size: 12px;
  font-weight: 800;
}

.company-proof-grid strong {
  display: block;
  margin-top: 8px;
  font-size: 18px;
  line-height: 1.35;
}

.company-proof-grid p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.company-visual {
  display: grid;
  gap: 18px;
}

.company-photo {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.logo-showcase {
  overflow: hidden;
  background: var(--brand-blue);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.logo-showcase img {
  width: 100%;
}

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

.service-card {
  min-height: 240px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(24, 36, 31, 0.05);
}

.service-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 30px;
  color: var(--teal-dark);
  background: #e3eee8;
  border-radius: 6px;
  font-weight: 800;
}

.service-card h3 {
  margin: 26px 0 12px;
  font-size: 22px;
}

.service-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.issue-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 64px;
  align-items: start;
}

.issue-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.issue-list li {
  position: relative;
  padding: 18px 22px 18px 44px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  line-height: 1.7;
}

.issue-list li::before {
  position: absolute;
  top: 23px;
  left: 20px;
  width: 9px;
  height: 9px;
  content: "";
  background: var(--ochre);
  border-radius: 50%;
}

.method-section {
  background: var(--teal-dark);
  color: var(--white);
}

.method-section .eyebrow {
  color: #d8b474;
}

.method-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 40px;
}

.method-steps article {
  min-height: 250px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
}

.method-steps span {
  color: #d8b474;
  font-weight: 800;
}

.method-steps h3 {
  margin: 28px 0 12px;
  font-size: 23px;
}

.method-steps p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.85;
}

.sectors-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: 54px;
  align-items: center;
}

.sector-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.sector-grid span {
  display: grid;
  min-height: 92px;
  place-items: center;
  padding: 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #25312c;
  font-size: 19px;
  font-weight: 800;
  text-align: center;
}

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

.article-card {
  min-height: 352px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(24, 36, 31, 0.05);
}

.article-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--wash);
}

.article-card span {
  display: inline-flex;
  margin: 20px 22px 0;
  color: var(--ochre);
  font-size: 13px;
  font-weight: 800;
}

.article-card h3 {
  margin: 10px 22px 24px;
  font-size: 21px;
  line-height: 1.5;
}

.about-section {
  background: var(--paper);
}

.about-layout,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 52px;
  align-items: start;
}

.about-panel {
  padding: 32px;
  background: #eef3ec;
  border: 1px solid #d3ddd2;
  border-radius: 8px;
}

.about-panel h3 {
  margin: 0 0 20px;
  font-size: 24px;
}

.about-panel ul {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  color: #3f4c45;
  line-height: 1.8;
  list-style-position: inside;
}

.business-list {
  list-style: none;
}

.business-list li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid #d3ddd2;
}

.business-list li:first-child {
  padding-top: 0;
}

.business-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.business-list strong {
  color: var(--ink);
  font-size: 18px;
  line-height: 1.35;
}

.business-list span {
  color: var(--muted);
  line-height: 1.75;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.team-card {
  display: grid;
  grid-template-columns: minmax(180px, 0.42fr) minmax(0, 0.58fr);
  min-height: 420px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(24, 36, 31, 0.06);
}

.team-card.lead {
  border-color: rgba(12, 111, 104, 0.28);
}

.team-card img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  object-position: center top;
  background: var(--wash);
}

.team-card-body {
  display: flex;
  flex-direction: column;
  padding: 28px;
}

.team-role {
  color: var(--ochre);
  font-size: 13px;
  font-weight: 800;
}

.team-card h3 {
  margin: 10px 0 14px;
  font-size: 29px;
  line-height: 1.2;
}

.team-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.team-card ul {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 20px 0 0;
  color: #33403a;
  line-height: 1.65;
  list-style: none;
}

.team-card li {
  position: relative;
  padding-left: 18px;
}

.team-card li::before {
  position: absolute;
  top: 11px;
  left: 0;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--teal);
  border-radius: 50%;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.faq-item {
  min-height: 220px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(24, 36, 31, 0.05);
}

.faq-item h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.4;
}

.faq-item p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.85;
}

.contact-section {
  background: #e7eee4;
}

.contact-lines {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.contact-lines p {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
  margin: 0;
  border-bottom: 1px solid #cdd8cc;
}

.contact-lines strong {
  min-width: 52px;
}

.contact-lines span {
  color: var(--muted);
  text-align: right;
}

.wechat-card {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  margin-top: 26px;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(24, 36, 31, 0.06);
}

.wechat-card img {
  width: 132px;
  height: 132px;
  object-fit: cover;
  border: 1px solid #d8dfd6;
  border-radius: 6px;
}

.wechat-card strong,
.wechat-card span {
  display: block;
}

.wechat-card strong {
  font-size: 20px;
  line-height: 1.35;
}

.wechat-card span {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.75;
}

.lead-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.lead-form label {
  display: grid;
  gap: 9px;
  color: #34413b;
  font-weight: 700;
}

.lead-form .full {
  grid-column: 1 / -1;
}

.lead-form select,
.lead-form textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 13px;
  color: var(--ink);
  background: #f9faf7;
  border: 1px solid #cfd8cf;
  border-radius: 6px;
  outline: none;
}

.lead-form textarea {
  resize: vertical;
  line-height: 1.7;
}

.lead-form select:focus,
.lead-form textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(12, 111, 104, 0.12);
}

.form-result {
  display: none;
  grid-column: 1 / -1;
  padding: 16px;
  color: #27342f;
  background: #edf5ee;
  border: 1px solid #c9dcca;
  border-radius: 8px;
  line-height: 1.75;
  white-space: pre-wrap;
}

.form-result.is-visible {
  display: block;
}

.site-footer {
  padding: 34px 0;
  color: rgba(255, 255, 255, 0.74);
  background: #16231f;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 28px;
}

.footer-inner p {
  max-width: 760px;
  margin: 0;
  line-height: 1.75;
}

.footer-inner p:first-child {
  color: var(--white);
  font-weight: 800;
}

.footer-records a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
}

.footer-records a:hover {
  color: var(--white);
}

@media (hover: hover) {
  .site-nav a:hover,
  .article-card:hover h3 {
    color: var(--teal);
  }

  .button.primary:hover,
  .nav-cta:hover {
    background: #095c56;
  }

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

@media (max-width: 960px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 72px 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 6vw 24px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 38px rgba(24, 36, 31, 0.12);
  }

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

  .site-nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .site-nav .nav-cta {
    margin-top: 14px;
    padding: 13px 16px;
    text-align: center;
    border-bottom: 0;
  }

  .hero,
  .hero-inner {
    min-height: 76vh;
  }

  .hero-media {
    object-position: 58% center;
  }

  .hero h1 {
    font-size: 48px;
  }

  .hero-lead {
    font-size: 19px;
  }

  .signal-grid,
  .company-proof-grid,
  .service-grid,
  .method-steps,
  .team-grid,
  .article-grid,
  .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .issue-layout,
  .sectors-layout,
  .company-layout,
  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .team-card {
    grid-template-columns: 1fr;
  }

  .team-card img {
    height: 360px;
    min-height: 0;
  }

  .section h2 {
    font-size: 32px;
  }
}

@media (max-width: 640px) {
  .section-shell {
    width: min(100% - 32px, 1180px);
  }

  .site-header {
    min-height: 68px;
    padding: 10px 16px;
  }

  .brand {
    min-width: 0;
  }

  .brand-mark-img {
    width: 38px;
    height: 38px;
  }

  .brand strong {
    font-size: 17px;
  }

  .brand small {
    font-size: 11px;
  }

  .site-nav {
    inset: 68px 0 auto 0;
  }

  .hero,
  .hero-inner {
    min-height: 74vh;
  }

  .hero-media {
    object-position: 64% center;
  }

  .hero-shade {
    background: rgba(251, 250, 246, 0.54);
  }

  .hero-inner {
    width: min(100% - 32px, 780px);
    padding: 44px 0 60px;
    margin-left: 16px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .button {
    width: 100%;
  }

  .signal-grid,
  .company-proof-grid,
  .service-grid,
  .method-steps,
  .sector-grid,
  .team-grid,
  .article-grid,
  .faq-grid,
  .lead-form {
    grid-template-columns: 1fr;
  }

  .company-copy h2 {
    font-size: 28px;
  }

  .team-card,
  .team-card img {
    min-height: auto;
  }

  .team-card img {
    height: 340px;
  }

  .team-card-body {
    padding: 24px;
  }

  .team-card h3 {
    font-size: 26px;
  }

  .signal-grid {
    border: 0;
  }

  .signal-grid div {
    min-height: auto;
    padding: 22px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .section {
    padding: 68px 0;
  }

  .section h2 {
    font-size: 28px;
  }

  .service-card,
  .method-steps article,
  .faq-item {
    min-height: auto;
  }

  .contact-lines p,
  .footer-inner {
    display: block;
  }

  .wechat-card {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 14px;
    padding: 14px;
  }

  .wechat-card img {
    width: 112px;
    height: 112px;
  }

  .wechat-card strong {
    font-size: 18px;
  }

  .contact-lines span {
    display: block;
    margin-top: 6px;
    text-align: left;
  }

  .footer-inner p + p {
    margin-top: 12px;
  }
}