:root {
  color-scheme: light;
  --ink: #202824;
  --muted: #6d746f;
  --green: #234e43;
  --line: #dce2dd;
  --paper: #f4f6f3;
  --header-height: 88px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 20px); }
body { margin: 0; color: var(--ink); background: #fff; font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif; font-size: 15px; line-height: 1.8; letter-spacing: 0; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
button, a { -webkit-tap-highlight-color: transparent; }
img { display: block; max-width: 100%; }
button, h1, h2, h3, p, figure { margin: 0; }
button { color: inherit; }
svg.lucide { width: 20px; height: 20px; flex-shrink: 0; stroke-width: 1.5; }
::selection { background: #cbdcc8; color: #183e32; }
:focus-visible { outline: 2px solid #71964d; outline-offset: 6px; }
.container { width: min(1240px, calc(100% - 112px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 30; background: white; padding: 12px 20px; clip-path: inset(100%); }
.skip-link:focus { clip-path: none; }
.header { height: var(--header-height); background: rgba(255,255,255,.97); position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(32,40,36,.06); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-name { font-size: 23px; font-weight: 600; line-height: 1.35; }
.brand-en { display: block; margin-top: 3px; font: 9px/1.4 Arial, sans-serif; color: #6e7973; }
.navigation { display: flex; align-items: center; gap: 37px; height: 100%; }
.nav-link { position: relative; font-size: 14px; padding-block: 10px; color: #666e68; transition: color .2s; white-space: nowrap; }
.nav-link:hover, .nav-link.active { color: var(--green); }
.nav-link::after { position: absolute; content: ""; left: 0; bottom: 0; width: 16px; height: 2px; background: var(--green); transform: scaleX(0); transform-origin: left; transition: transform .2s; }
.nav-link.active::after, .nav-link:hover::after { transform: scaleX(1); }
.nav-contact { display: inline-flex; align-items: center; gap: 22px; margin-left: 16px; padding: 9px 0 9px 30px; border-left: 1px solid var(--line); color: var(--green); font-size: 14px; white-space: nowrap; }
.nav-contact svg { transition: transform .2s; }
.nav-contact:hover svg { transform: translate(2px,-2px); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; place-items: center; }
.menu-close-icon { display: none; }
.hero { position: relative; isolation: isolate; height: clamp(520px, calc(100svh - 185px), 760px); color: white; background: #41636b; }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 15%; z-index: -3; filter: saturate(.68); }
.hero-shade { position: absolute; inset: 0; background: rgba(12,31,29,.29); z-index: -2; }
.hero-inner { height: 100%; display: flex; flex-direction: column; justify-content: center; position: relative; padding-block: 40px 104px; }
.hero-copy { max-width: 720px; text-shadow: 0 2px 20px rgba(0,0,0,.1); }
.eyebrow { font-size: 12px; font-weight: 400; }
.hero-eyebrow { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; color: rgba(255,255,255,.92); font-size: 13px; }
.short-line { display: inline-block; width: 32px; height: 1px; background: currentColor; }
h1 { font-size: 80px; font-weight: 500; line-height: 1.3; }
.hero-dot { color: #d3e4bc; margin-left: 7px; }
.hero-statement { margin-top: 15px; font-size: 26px; font-weight: 400; }
.hero-description { margin-top: 17px; font-size: 15px; color: rgba(255,255,255,.9); }
.mobile-break { display: none; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 40px; min-width: 164px; min-height: 50px; padding: 12px 21px; border: 1px solid transparent; border-radius: 2px; font-size: 14px; line-height: 1.6; transition: background .2s, transform .2s; }
.button-light { margin-top: 34px; background: #fff; color: var(--green); text-shadow: none; }
.button-light:hover { background: #eaf0e6; transform: translateY(-2px); }
.hero-bottom { position: absolute; bottom: 26px; left: 0; right: 0; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.33); padding-top: 20px; font-size: 11px; }
.hero-location { display: flex; align-items: center; gap: 10px; }
.hero-location svg { width: 15px; height: 15px; }
.location-divider { width: 1px; height: 11px; background: rgba(255,255,255,.45); margin-inline: 7px; }
.scroll-link { display: flex; align-items: center; gap: 20px; }
.scroll-link svg { height: 17px; }
.intro-strip { border-bottom: 1px solid var(--line); }
.intro-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; min-height: 96px; }
.intro-inner > p { color: var(--green); font-size: 17px; font-weight: 500; }
.intro-fields { display: flex; align-items: center; gap: 30px; font-size: 13px; color: #646e68; }
.intro-fields span + span::before { content: "/"; color: #b4bcb6; margin-right: 30px; }
.intro-en { color: #8c948e; font: 10px Arial, sans-serif; }
.section { padding-block: 94px; }
.section-label { display: flex; align-items: center; justify-content: space-between; color: var(--green); font-size: 12px; margin-bottom: 44px; }
.section-label > span:last-child { font: 10px Arial, sans-serif; color: #8b938d; }
h2 { font-size: 38px; font-weight: 400; line-height: 1.65; }
.text-green { color: var(--green); }
.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
.about-copy { max-width: 520px; color: var(--muted); font-size: 14px; line-height: 2; }
.about-copy .company-name { color: var(--ink); font-size: 18px; margin-bottom: 20px; }
.about-copy > p + p { margin-top: 15px; }
.text-link { display: inline-flex; align-items: center; gap: 22px; margin-top: 25px; color: var(--green); font-size: 13px; padding-bottom: 6px; border-bottom: 1px solid #a7b8af; }
.text-link svg { width: 17px; transition: transform .2s; }
.text-link:hover svg { transform: translateX(4px); }
.services { background: var(--paper); }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin-bottom: 48px; }
.section-heading > p { font-size: 13px; color: var(--muted); }
.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 44px; }
.service { border-top: 1px solid #b9c6be; padding-top: 25px; }
.service-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 30px; color: #8b958e; font: 12px Arial, sans-serif; }
.service-top svg { width: 30px; height: 30px; color: var(--green); stroke-width: 1.3; }
.service-en { color: #808a82; font: 10px/1.5 Arial, sans-serif; margin-bottom: 9px; }
.service h3 { font-size: 23px; line-height: 1.5; font-weight: 500; }
.service-description { color: var(--muted); font-size: 14px; line-height: 1.95; margin-top: 19px; min-height: 82px; }
.service-details { margin: 25px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); list-style: none; color: #525f56; font-size: 13px; line-height: 2.3; }
.service-details li { display: flex; align-items: center; gap: 12px; }
.service-details li::before { content: ""; width: 4px; height: 4px; background: #7f9878; flex-shrink: 0; }
.approach-layout { display: grid; grid-template-columns: 1fr 1fr; align-items: stretch; gap: 90px; }
.approach-figure { position: relative; min-height: 580px; background: #dae0de; }
.approach-figure > img { width: 100%; height: 100%; position: absolute; object-fit: cover; object-position: 42% center; filter: saturate(.35); }
.approach-figure figcaption { position: absolute; bottom: 0; left: 0; right: 0; display: flex; justify-content: space-between; gap: 15px; color: #fff; background: rgba(20,39,33,.72); padding: 20px 25px; font-size: 13px; }
.approach-figure figcaption span:last-child { font: 10px/2 Arial, sans-serif; }
.approach-copy { padding-block: 4px; }
.approach-copy h2 { margin-bottom: 30px; line-height: 1.5; }
.principle { display: flex; gap: 25px; padding-block: 23px; border-top: 1px solid var(--line); }
.principle:last-child { padding-bottom: 0; }
.principle-number { font: 12px/2.5 Arial, sans-serif; color: #8d9b90; }
.principle h3 { font-size: 18px; font-weight: 500; margin-bottom: 10px; }
.principle p { color: var(--muted); font-size: 13px; line-height: 1.9; }
.company { color: #f5f7f1; background: var(--green); padding-block: 76px; }
.company-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: center; }
.company .eyebrow { color: #b6c8b5; font: 11px Arial, sans-serif; margin-bottom: 25px; }
.company h2 { font-size: 38px; line-height: 1.6; }
.company-intro > p:last-child { margin-top: 24px; font-size: 13px; color: #c8d4c7; }
.company-information { align-self: center; padding-top: 26px; }
.company-full-name { font-size: 20px; padding-bottom: 25px; }
.information-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 13px; border-top: 1px solid rgba(255,255,255,.18); padding-block: 18px; }
.information-row > span:first-child { color: #bbcebf; }
.information-row > a { display: inline-flex; align-items: center; gap: 14px; }
.information-row svg { width: 16px; height: 16px; }
.copy-link { display: inline-flex; align-items: center; gap: 10px; border: 0; border-bottom: 1px solid #98b09b; background: none; padding: 7px 0; margin-top: 10px; color: #ecf3e8; font-size: 12px; }
.copy-link:hover { color: #d9efb4; }
.copy-link svg { width: 14px; height: 14px; }
.copy-status { min-height: 24px; margin-top: 7px; font-size: 11px; color: #d9efb4; }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-block: 40px; }
.footer-brand .brand-name { font-size: 19px; }
.footer-brand .brand-en { font-size: 8px; }
.footer-top > p { font-size: 13px; color: #7b857d; }
.back-top { display: inline-flex; align-items: center; gap: 18px; font-size: 12px; color: #536357; }
.back-top svg { width: 16px; height: 16px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; padding-block: 20px 25px; border-top: 1px solid #e6eae5; font-size: 11px; color: #879087; }
.credits { position: relative; text-align: right; }
.credits summary { cursor: pointer; list-style: none; }
.credits summary::-webkit-details-marker { display: none; }
.credits-content { max-width: 430px; padding-top: 12px; color: #616e65; }
.credits-content a { text-decoration: underline; text-underline-offset: 3px; }

@media (min-width: 1800px) {
  .container { width: min(1440px, calc(100% - 160px)); }
  .hero-copy { margin-left: 0; }
  .hero-image { object-position: center 12%; }
}

@media (max-width: 1100px) {
  .container { width: calc(100% - 72px); }
  .navigation { gap: 24px; }
  .nav-contact { margin-left: 0; padding-left: 20px; gap: 12px; }
  .about-layout, .approach-layout, .company-inner { gap: 45px; }
  h2 { font-size: 32px; }
  .intro-en { display: none; }
  .service-grid { gap: 28px; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 12px; }
  .service-description { min-height: 110px; }
  .approach-figure { min-height: 590px; }
  .approach-figure figcaption span:last-child { display: none; }
}

@media (max-width: 800px) {
  :root { --header-height: 76px; }
  .container { width: calc(100% - 48px); }
  .header-inner { gap: 16px; }
  .brand-name { font-size: 21px; }
  .brand > img { width: 34px; height: 34px; }
  .brand-en { font-size: 8px; }
  .menu-toggle { display: grid; }
  .navigation { position: absolute; left: 0; right: 0; top: 100%; height: auto; display: none; padding: 15px 24px 25px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 14px 20px rgba(25,42,32,.06); }
  .navigation.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .nav-link { padding-block: 13px; }
  .nav-link::after { bottom: 7px; }
  .nav-contact { padding: 19px 0 0; margin-top: 14px; border-left: 0; border-top: 1px solid var(--line); justify-content: space-between; }
  .menu-toggle[aria-expanded="true"] .menu-open-icon { display: none; }
  .menu-toggle[aria-expanded="true"] .menu-close-icon { display: block; }
  .hero { height: clamp(490px, calc(100svh - 174px), 680px); }
  .hero-image { object-position: 48% top; }
  .hero-shade { background: rgba(12,31,29,.34); }
  h1 { font-size: 64px; }
  .hero-statement { font-size: 23px; }
  .hero-description { max-width: 320px; font-size: 14px; }
  .hero-eyebrow { margin-bottom: 25px; }
  .hero-inner { padding-bottom: 95px; }
  .intro-inner { min-height: 98px; gap: 16px; }
  .intro-fields { gap: 14px; font-size: 12px; }
  .intro-fields span + span::before { margin-right: 14px; }
  .intro-inner > p { font-size: 15px; }
  .section { padding-block: 65px; }
  .section-label { margin-bottom: 32px; }
  .about-layout { grid-template-columns: 1fr; gap: 28px; }
  .about-copy { max-width: 100%; }
  .service-grid { grid-template-columns: 1fr; gap: 32px; }
  .service { display: grid; grid-template-columns: 1fr 1fr; column-gap: 30px; }
  .service-top { grid-column: 1 / -1; margin-bottom: 24px; }
  .service-en, .service h3, .service-description { grid-column: 1; }
  .service-details { grid-column: 2; grid-row: 2 / 5; margin: 0; padding: 20px 0 0 30px; border-top: 0; border-left: 1px solid var(--line); align-self: stretch; }
  .service-description { min-height: 0; margin-top: 15px; }
  .section-heading { margin-bottom: 35px; }
  .approach-layout { grid-template-columns: .85fr 1fr; gap: 30px; }
  .approach-figure { min-height: 585px; }
  .approach-copy h2 { font-size: 30px; }
  .principle { gap: 16px; padding-block: 20px; }
  .company-inner { gap: 35px; }
  .company h2 { font-size: 30px; }
  .company-full-name { font-size: 17px; }
  .information-row { align-items: flex-start; gap: 7px; flex-direction: column; }
  .footer-top > p { display: none; }
}

@media (max-width: 540px) {
  :root { --header-height: 72px; }
  .container { width: calc(100% - 40px); }
  .hero { height: clamp(480px, calc(100svh - 175px), 630px); }
  .hero-image { object-position: 39% top; }
  .hero-inner { padding-block: 32px 90px; }
  .hero-eyebrow { font-size: 11px; gap: 11px; margin-bottom: 22px; }
  .short-line { width: 22px; }
  h1 { font-size: 53px; }
  .hero-statement { font-size: 19px; margin-top: 18px; }
  .hero-description { margin-top: 16px; font-size: 13px; line-height: 1.9; }
  .mobile-break { display: block; }
  .button { min-width: 146px; min-height: 46px; font-size: 13px; }
  .button-light { margin-top: 29px; }
  .hero-bottom { bottom: 20px; padding-top: 17px; font-size: 9px; }
  .hero-location { gap: 6px; }
  .hero-location svg { width: 13px; height: 13px; }
  .location-divider { margin-inline: 3px; }
  .scroll-link { gap: 8px; }
  .scroll-link span { display: none; }
  .intro-inner { padding-block: 20px; min-height: 104px; gap: 9px; flex-direction: column; align-items: flex-start; justify-content: center; }
  .intro-inner > p { font-size: 15px; }
  .intro-fields { font-size: 11px; gap: 20px; }
  .intro-fields span + span::before { margin-right: 20px; }
  .section { padding-block: 52px; }
  .section-label { margin-bottom: 26px; font-size: 11px; }
  .section-label > span:last-child { font-size: 9px; }
  h2 { font-size: 27px; line-height: 1.65; }
  .about-layout { gap: 28px; }
  .about-copy { font-size: 13px; }
  .about-copy .company-name { font-size: 16px; margin-bottom: 14px; }
  .section-heading h2 { font-size: 26px; }
  .section-heading > p { font-size: 12px; }
  .service-grid { gap: 30px; }
  .service { display: block; padding-top: 21px; }
  .service-top { margin-bottom: 21px; }
  .service-top svg { width: 27px; height: 27px; }
  .service h3 { font-size: 22px; }
  .service-description { font-size: 13px; margin-top: 14px; }
  .service-details { display: flex; flex-wrap: wrap; gap: 7px 17px; border-left: 0; border-top: 1px solid var(--line); padding: 16px 0 0; margin-top: 20px; font-size: 11px; }
  .service-details li { gap: 7px; }
  .approach-layout { display: flex; flex-direction: column; gap: 33px; }
  .approach-figure { min-height: 0; aspect-ratio: 1.15; }
  .approach-figure > img { object-position: center 58%; }
  .approach-figure figcaption { padding: 17px 18px; font-size: 12px; }
  .approach-figure figcaption span:last-child { display: block; font-size: 9px; }
  .approach-copy h2 { font-size: 28px; margin-bottom: 25px; }
  .principle { gap: 18px; padding-block: 20px; }
  .principle h3 { font-size: 17px; }
  .company { padding-block: 48px 35px; }
  .company-inner { grid-template-columns: 1fr; gap: 15px; }
  .company h2 { font-size: 30px; }
  .company .eyebrow { margin-bottom: 20px; font-size: 10px; }
  .company-intro > p:last-child { margin-top: 18px; font-size: 12px; }
  .company-full-name { font-size: 18px; padding-bottom: 20px; }
  .information-row { flex-direction: row; font-size: 12px; padding-block: 16px; }
  .footer-top { padding-block: 30px; gap: 15px; }
  .footer-brand .brand-name { font-size: 18px; }
  .footer-brand .brand-en { font-size: 7px; }
  .footer-brand img { width: 30px; height: 30px; }
  .back-top { font-size: 11px; gap: 8px; }
  .footer-bottom { flex-direction: column; gap: 10px; font-size: 10px; padding-block: 19px; }
  .credits { text-align: left; }
}

@media (max-width: 360px) {
  h1 { font-size: 46px; }
  .hero-statement { font-size: 17px; }
  h2, .section-heading h2 { font-size: 24px; }
  .company-full-name { font-size: 16px; }
  .hero-location { font-size: 8px; }
}

@media (max-height: 600px) and (min-width: 600px) {
  :root { --header-height: 64px; }
  .hero { height: max(250px, calc(100svh - 114px)); }
  .hero-inner { padding-block: 16px 55px; }
  .hero-eyebrow, .hero-description { display: none; }
  h1 { font-size: 42px; }
  .hero-statement { margin-top: 5px; font-size: 19px; }
  .button-light { margin-top: 16px; }
  .button { min-height: 40px; padding-block: 8px; }
  .hero-bottom { bottom: 12px; padding-top: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}