:root {
  --ink: #15251f;
  --ink-soft: #52615b;
  --green: #126b50;
  --green-dark: #0a4b38;
  --mint: #cbe8dc;
  --cream: #f5f6f1;
  --white: #ffffff;
  --line: rgba(21, 37, 31, 0.13);
  --shadow: 0 24px 70px rgba(16, 59, 44, 0.12);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family:
    "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  border-bottom: 1px solid transparent;
  transition:
    background 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 28px rgba(14, 48, 36, 0.05);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
}

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

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--green);
  font-family: Georgia, serif;
  font-size: 14px;
  letter-spacing: -1px;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.25;
}

.brand strong {
  font-size: 18px;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.brand small {
  margin-top: 3px;
  color: var(--ink-soft);
  font-size: 8px;
  letter-spacing: 0.18em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 38px;
}

.main-nav a {
  position: relative;
  color: #34443e;
  font-size: 14px;
}

.main-nav a::after {
  position: absolute;
  right: 50%;
  bottom: -9px;
  left: 50%;
  height: 2px;
  content: "";
  background: var(--green);
  transition:
    right 0.2s ease,
    left 0.2s ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  right: 0;
  left: 0;
}

.menu-toggle {
  display: none;
  padding: 8px;
  border: 0;
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
  transition: 0.2s ease;
}

.hero {
  position: relative;
  min-height: 760px;
  padding-top: 82px;
  overflow: hidden;
  background:
    radial-gradient(circle at 86% 23%, rgba(133, 201, 174, 0.27), transparent 24%),
    linear-gradient(120deg, #f9faf6 0%, #f1f5ef 100%);
}

.hero::before {
  position: absolute;
  top: 82px;
  left: 50%;
  width: 1px;
  height: 100%;
  content: "";
  background: rgba(18, 107, 80, 0.08);
}

.hero-grid {
  display: grid;
  min-height: 670px;
  align-items: center;
  grid-template-columns: 1.05fr 0.95fr;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 90px 0 100px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.hero h1 {
  max-width: 650px;
  margin: 0;
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(54px, 7vw, 92px);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.hero h1 em {
  color: var(--green);
  font-style: normal;
}

.hero-copy {
  max-width: 540px;
  margin: 28px 0 36px;
  color: var(--ink-soft);
  font-size: 17px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 32px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 14px;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

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

.button-primary {
  color: var(--white);
  background: var(--green);
  box-shadow: 0 12px 28px rgba(18, 107, 80, 0.22);
}

.button-primary:hover {
  background: var(--green-dark);
  box-shadow: 0 16px 34px rgba(18, 107, 80, 0.27);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
}

.text-link span {
  color: var(--green);
  font-size: 19px;
  transition: transform 0.2s ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

.hero-visual {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: flex-end;
}

.visual-card {
  position: relative;
  width: min(460px, 100%);
  aspect-ratio: 0.82;
  padding: 34px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 220px 220px 28px 28px;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.66), rgba(166, 212, 193, 0.27)),
    #dcebe3;
  box-shadow: var(--shadow);
}

.visual-card::after {
  position: absolute;
  right: -50px;
  bottom: -70px;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  content: "";
  background: rgba(18, 107, 80, 0.12);
  filter: blur(4px);
}

.visual-label {
  position: relative;
  z-index: 2;
  color: var(--green-dark);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.visual-orbit {
  position: absolute;
  top: 46%;
  left: 50%;
  width: 280px;
  height: 280px;
  transform: translate(-50%, -50%);
}

.orbit {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(18, 107, 80, 0.24);
  border-radius: 50%;
}

.orbit::after {
  position: absolute;
  top: 30px;
  left: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  content: "";
  background: var(--green);
  box-shadow: 0 0 0 8px rgba(18, 107, 80, 0.1);
}

.orbit-two {
  transform: rotate(64deg) scale(0.72);
}

.visual-core {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 110px;
  height: 110px;
  place-items: center;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  color: var(--white);
  background: var(--green);
  box-shadow: 0 18px 44px rgba(18, 107, 80, 0.28);
  font-family: "Songti SC", serif;
  font-size: 43px;
}

.visual-card > p {
  position: absolute;
  z-index: 2;
  right: 34px;
  bottom: 30px;
  margin: 0;
  color: var(--green-dark);
  font-family: "Songti SC", serif;
  font-size: 16px;
  text-align: right;
}

.hero-line {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--green) 0 34%, var(--mint) 34% 68%, #e1b56d 68%);
}

.section {
  padding: 110px 0;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 54px;
}

.section-heading h2,
.contact h2 {
  margin: 0;
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(36px, 5vw, 54px);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.section-heading > p:last-child {
  color: var(--ink-soft);
}

.split-heading {
  display: grid;
  max-width: none;
  align-items: end;
  gap: 90px;
  grid-template-columns: 1.1fr 0.9fr;
}

.split-heading > p {
  margin: 0 0 7px;
}

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

.value-card {
  padding: 38px 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition:
    transform 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.value-card:hover {
  transform: translateY(-6px);
  border-color: rgba(18, 107, 80, 0.3);
  box-shadow: var(--shadow);
}

.value-card > span {
  color: var(--green);
  font-family: Georgia, serif;
  font-size: 13px;
}

.value-card h3 {
  margin: 42px 0 14px;
  font-size: 22px;
  font-weight: 600;
}

.value-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.services {
  background: var(--cream);
}

.service-list {
  border-top: 1px solid var(--line);
}

.service-item {
  display: grid;
  min-height: 145px;
  align-items: center;
  gap: 30px;
  padding: 22px 10px;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 72px 1fr 50px;
  transition:
    padding 0.25s ease,
    background 0.25s ease;
}

.service-item:hover {
  padding-right: 24px;
  padding-left: 24px;
  background: rgba(255, 255, 255, 0.74);
}

.service-icon {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border: 1px solid rgba(18, 107, 80, 0.24);
  border-radius: 50%;
  color: var(--green);
  font-family: Georgia, serif;
  font-size: 13px;
}

.service-item h3 {
  margin: 0 0 5px;
  font-size: 23px;
  font-weight: 600;
}

.service-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.service-arrow {
  color: var(--green);
  font-size: 24px;
  text-align: right;
}

.news-heading {
  display: flex;
  max-width: none;
  align-items: flex-end;
  justify-content: space-between;
}

.news-grid {
  display: grid;
  gap: 60px;
  grid-template-columns: 1.1fr 0.9fr;
}

.news-featured {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.news-image {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  justify-content: space-between;
  padding: 34px;
  color: var(--white);
  background:
    radial-gradient(circle at 78% 24%, rgba(169, 225, 201, 0.42), transparent 25%),
    linear-gradient(135deg, #0e513d, #173b31);
}

.news-image span {
  font-size: 12px;
  letter-spacing: 0.12em;
}

.news-image strong {
  font-family: Georgia, "Songti SC", serif;
  font-size: 38px;
  font-weight: 400;
  line-height: 1.25;
}

.news-body {
  padding: 28px 32px 32px;
}

.news-body time,
.news-list time {
  color: #7b8984;
  font-family: Georgia, serif;
  font-size: 12px;
}

.news-body h3 {
  margin: 12px 0 8px;
  font-size: 21px;
  line-height: 1.5;
}

.news-body p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.news-list {
  border-top: 1px solid var(--line);
}

.news-list article {
  position: relative;
  min-height: 145px;
  padding: 26px 54px 24px 0;
  border-bottom: 1px solid var(--line);
}

.news-list h3 {
  margin: 8px 0 0;
  font-size: 18px;
  font-weight: 550;
}

.news-list a {
  position: absolute;
  top: 50%;
  right: 8px;
  color: var(--green);
  font-size: 23px;
  transform: translateY(-50%);
}

.contact {
  padding: 100px 0;
  color: var(--white);
  background:
    radial-gradient(circle at 90% 10%, rgba(151, 219, 191, 0.18), transparent 25%),
    var(--green-dark);
}

.contact .eyebrow {
  color: #91d2b8;
}

.contact-inner {
  display: grid;
  align-items: end;
  gap: 100px;
  grid-template-columns: 1.1fr 0.9fr;
}

.contact-content p {
  max-width: 450px;
  margin: 0 0 28px;
  color: rgba(255, 255, 255, 0.72);
}

.button-light {
  color: var(--green-dark);
  background: var(--white);
}

.site-footer {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand .brand-mark {
  width: 36px;
  height: 36px;
}

.footer-inner > p,
.footer-inner > a {
  color: var(--ink-soft);
  font-size: 12px;
}

.beian-link {
  margin-left: 12px;
  color: var(--ink-soft);
}

.beian-link:hover {
  color: var(--green);
}

@media (max-width: 900px) {
  .main-nav {
    position: absolute;
    top: 82px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 24px 22px;
    border-bottom: 1px solid var(--line);
    background: var(--white);
  }

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

  .main-nav a {
    width: 100%;
    padding: 13px 0;
  }

  .main-nav a::after {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .hero {
    min-height: auto;
  }

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

  .hero-content {
    padding: 110px 0 50px;
  }

  .hero-visual {
    justify-content: center;
    padding-bottom: 80px;
  }

  .visual-card {
    width: min(440px, 88vw);
  }

  .split-heading,
  .news-grid,
  .contact-inner {
    gap: 42px;
    grid-template-columns: 1fr;
  }

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

  .value-card h3 {
    margin-top: 20px;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 32px, 1180px);
  }

  .header-inner {
    min-height: 70px;
  }

  .main-nav {
    top: 70px;
  }

  .hero {
    padding-top: 70px;
  }

  .hero-content {
    padding-top: 80px;
  }

  .hero h1 {
    font-size: 52px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }

  .visual-card {
    padding: 24px;
  }

  .visual-orbit {
    width: 230px;
    height: 230px;
  }

  .section {
    padding: 80px 0;
  }

  .service-item {
    min-height: 170px;
    gap: 18px;
    grid-template-columns: 48px 1fr;
  }

  .service-icon {
    width: 42px;
    height: 42px;
  }

  .service-arrow {
    display: none;
  }

  .news-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }

  .news-image {
    min-height: 260px;
  }

  .news-image strong {
    font-size: 30px;
  }

  .contact {
    padding: 80px 0;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }
}