:root {
  --green: #164332;
  --green-dark: #0f3024;
  --green-light: #e7eee9;
  --gold: #b49a6c;
  --text: #222724;
  --muted: #68706b;
  --border: #d8ddd9;
  --soft: #f5f6f4;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

::selection {
  color: var(--white);
  background: var(--green);
}

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

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid #e3e6e3;
  box-shadow: 0 2px 8px rgba(20, 42, 31, 0.04);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
}

.brand-mark {
  width: 50px;
  height: 50px;
  flex: 0 0 auto;
  display: block;
  overflow: hidden;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.brand-name {
  display: grid;
  line-height: 1;
}

.brand-name strong {
  color: var(--green-dark);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.brand-name small {
  margin-top: 7px;
  color: #5e6a63;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.28em;
}

.desktop-nav {
  display: flex;
  align-self: stretch;
}

.desktop-nav a {
  min-width: 92px;
  padding: 0 18px;
  display: grid;
  place-items: center;
  position: relative;
  color: #404943;
  font-size: 14px;
  transition: color 180ms ease, background 180ms ease;
}

.desktop-nav a::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 0;
  left: 18px;
  height: 3px;
  background: transparent;
}

.desktop-nav a:hover {
  color: var(--green);
  background: #f8faf8;
}

.desktop-nav a:hover::after {
  background: var(--green);
}

.hero {
  min-height: 480px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  color: var(--white);
  background: var(--green);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 50%;
}

.hero::before {
  width: 520px;
  height: 520px;
  right: -120px;
  top: -210px;
}

.hero::after {
  width: 370px;
  height: 370px;
  right: -20px;
  top: -125px;
}

.hero-inner {
  min-height: 480px;
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 70px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-copy {
  max-width: 720px;
}

.hero-tag {
  margin: 0 0 24px;
  color: #d8e4dc;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 11px;
  letter-spacing: 0.18em;
}

.hero h1 {
  margin: 0;
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.01em;
}

.hero-description {
  max-width: 680px;
  margin: 25px 0 0;
  color: #d9e2dc;
  font-size: 16px;
  line-height: 1.95;
}

.primary-button {
  width: max-content;
  min-width: 138px;
  min-height: 44px;
  margin-top: 34px;
  padding: 0 24px;
  display: inline-grid;
  place-items: center;
  color: var(--green-dark);
  background: var(--white);
  border: 1px solid var(--white);
  font-size: 14px;
  transition: color 180ms ease, background 180ms ease;
}

.primary-button:hover {
  color: var(--white);
  background: transparent;
}

.hero-emblem {
  justify-self: end;
  opacity: 0.2;
}

.hero-emblem img {
  width: min(24vw, 280px);
  height: auto;
  display: block;
  border: 1px solid rgba(255, 255, 255, 0.34);
}

.focus-strip {
  min-height: 82px;
  display: flex;
  align-items: center;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 5px 16px rgba(23, 53, 39, 0.04);
}

.focus-list {
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto 1fr auto;
  gap: 34px;
  align-items: center;
  color: #47524b;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.focus-list i {
  height: 1px;
  background: #d4dad6;
}

.section {
  padding: 96px 0 106px;
}

.section-heading {
  text-align: center;
}

.section-heading > p {
  margin: 0 0 9px;
  color: #8a938d;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 11px;
  letter-spacing: 0.18em;
}

.section-heading h2 {
  margin: 0;
  color: var(--green-dark);
  font-size: 32px;
  font-weight: 600;
}

.section-heading > span {
  width: 42px;
  height: 2px;
  margin: 20px auto 0;
  display: block;
  background: var(--gold);
}

.section-intro {
  max-width: 680px;
  margin: 24px auto 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.about-layout {
  margin-top: 62px;
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 72px;
  align-items: stretch;
}

.about-visual {
  min-height: 390px;
  padding: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #d8e3dc;
  background: var(--green);
}

.about-crest {
  width: 190px;
  height: 190px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.about-crest img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.about-visual p {
  margin: 30px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 10px;
  letter-spacing: 0.2em;
}

.about-content {
  padding: 12px 0;
}

.about-content h3 {
  margin: 0 0 28px;
  color: var(--green-dark);
  font-size: 27px;
  font-weight: 600;
}

.about-content p {
  margin: 0 0 20px;
  color: #5e6661;
  font-size: 15px;
  line-height: 2;
}

.about-content .about-lead {
  padding-left: 20px;
  color: #39443e;
  border-left: 3px solid var(--gold);
  font-size: 17px;
}

.services-section {
  background: var(--soft);
  border-top: 1px solid #e8ebe8;
  border-bottom: 1px solid #e8ebe8;
}

.service-grid {
  margin-top: 58px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  min-height: 320px;
  padding: 34px 30px;
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 4px solid var(--green);
  box-shadow: 0 5px 18px rgba(20, 47, 35, 0.04);
}

.service-number {
  color: var(--gold);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 13px;
  font-weight: 700;
}

.service-card h3 {
  margin: 30px 0 8px;
  color: var(--green-dark);
  font-size: 23px;
  font-weight: 600;
}

.service-card .service-en {
  margin: 0 0 30px;
  color: #8b938e;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.service-card > p:last-child {
  margin: 0;
  color: #646c67;
  font-size: 14px;
  line-height: 1.9;
}

.method-grid {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
}

.method-card {
  min-height: 248px;
  padding: 34px 26px;
  position: relative;
  text-align: center;
  border-right: 1px solid var(--border);
}

.method-card:last-child {
  border-right: 0;
}

.method-card > span {
  width: 46px;
  height: 46px;
  margin: 0 auto 26px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--green);
  border-radius: 50%;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 12px;
}

.method-card h3 {
  margin: 0 0 16px;
  color: var(--green-dark);
  font-size: 19px;
  font-weight: 600;
}

.method-card p {
  margin: 0;
  color: #69716c;
  font-size: 13px;
  line-height: 1.8;
}

.motto-section {
  padding: 62px 0;
  color: var(--white);
  background: var(--green);
}

.motto-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 50px;
}

.motto-inner p {
  margin: 0 0 12px;
  color: #c6d6cc;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 10px;
  letter-spacing: 0.18em;
}

.motto-inner h2 {
  margin: 0;
  font-size: 30px;
  font-weight: 500;
}

.motto-inner > span {
  color: #d8e3dc;
  font-size: 14px;
}

.site-footer {
  color: #c7cec9;
  background: #17221c;
}

.footer-main {
  min-height: 150px;
  display: grid;
  grid-template-columns: 1fr 1.4fr auto;
  gap: 60px;
  align-items: center;
}

.site-footer .brand-name strong {
  color: var(--white);
}

.site-footer .brand-name small {
  color: #aeb8b1;
}

.footer-company {
  display: grid;
  gap: 9px;
}

.footer-company strong {
  color: #e5e9e6;
  font-size: 14px;
  font-weight: 500;
}

.footer-company span {
  color: #89958d;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 9px;
  letter-spacing: 0.04em;
}

.footer-main > a {
  color: #b3bcb6;
  font-size: 12px;
}

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

.footer-bottom {
  border-top: 1px solid #303b34;
}

.footer-bottom .shell {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #738077;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 9px;
  letter-spacing: 0.08em;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media (max-width: 900px) {
  .desktop-nav a {
    min-width: auto;
    padding-inline: 13px;
  }

  .hero-inner {
    grid-template-columns: 1fr 180px;
    gap: 30px;
  }

  .hero-emblem img {
    width: 180px;
  }

  .about-layout {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 42px;
  }

  .service-grid {
    gap: 14px;
  }

  .service-card {
    padding-inline: 22px;
  }

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

  .method-card:nth-child(2) {
    border-right: 0;
  }

  .method-card:nth-child(-n + 2) {
    border-bottom: 1px solid var(--border);
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
  }

  .footer-main > a {
    display: none;
  }
}

@media (max-width: 680px) {
  .shell {
    width: calc(100% - 32px);
  }

  .header-inner {
    min-height: 72px;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
  }

  .brand-name strong {
    font-size: 18px;
  }

  .desktop-nav {
    display: none;
  }

  .hero,
  .hero-inner {
    min-height: 500px;
  }

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

  .hero-emblem {
    display: none;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-description {
    font-size: 14px;
  }

  .focus-strip {
    min-height: 68px;
  }

  .focus-list {
    grid-template-columns: repeat(4, auto);
    gap: 0;
    justify-content: space-between;
    font-size: 12px;
    letter-spacing: 0;
  }

  .focus-list i {
    display: none;
  }

  .section {
    padding: 74px 0 80px;
  }

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

  .about-layout {
    margin-top: 46px;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-visual {
    min-height: 300px;
  }

  .about-content h3 {
    font-size: 24px;
  }

  .service-grid {
    margin-top: 44px;
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .service-card {
    min-height: auto;
  }

  .method-grid {
    margin-top: 44px;
    grid-template-columns: 1fr;
  }

  .method-card,
  .method-card:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .method-card:last-child {
    border-bottom: 0;
  }

  .motto-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 24px;
  }

  .motto-inner h2 {
    font-size: 26px;
    line-height: 1.5;
  }

  .footer-main {
    padding: 40px 0;
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom .shell {
    padding: 20px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
  }
}