:root {
  --forest: #174b3c;
  --forest-deep: #0d3028;
  --leaf: #658a3d;
  --navy: #123746;
  --gold: #b08743;
  --ink: #111916;
  --text: #303b36;
  --muted: #68736e;
  --line: #d9dfdc;
  --surface: #f3f6f4;
  --white: #fff;
  --content: 1280px;
  color: var(--text);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { min-width: 320px; margin: 0; overflow-x: hidden; color: var(--text); background: var(--white); font-size: 16px; line-height: 1.75; }
html[lang="en"] body { font-family: Arial, Helvetica, sans-serif; }
body.menu-open, body.dialog-open { overflow: hidden; }
button, a { -webkit-tap-highlight-color: transparent; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
a { color: inherit; }
img { display: block; max-width: 100%; }
figure, dl, dd { margin: 0; }
.container { width: min(calc(100% - 36px), var(--content)); margin-inline: auto; }

.skip-link { position: fixed; top: 8px; left: 8px; z-index: 300; padding: 10px 16px; color: var(--white); background: var(--forest-deep); transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 100; border-bottom: 1px solid rgba(23, 75, 60, .12); background: rgba(255, 255, 255, .97); transition: box-shadow 180ms ease, background 180ms ease; }
.site-header.scrolled, .site-header.menu-visible { background: var(--white); box-shadow: 0 6px 24px rgba(13, 48, 40, .08); }
.header-inner { display: flex; align-items: center; width: min(calc(100% - 28px), var(--content)); height: 64px; margin-inline: auto; }
.brand { display: inline-flex; align-items: center; min-width: 0; text-decoration: none; }
.brand-mark { display: grid; flex: 0 0 32px; width: 32px; height: 42px; place-items: center; }
.brand-mark img { width: 28px; height: 38px; object-fit: contain; }
.brand-name { display: grid; margin-left: 10px; line-height: 1.05; }
.brand-name strong { color: var(--forest-deep); font-size: 19px; font-weight: 800; }
.brand-name small { margin-top: 6px; color: #7d8883; font-family: Arial, sans-serif; font-size: 7px; font-weight: 700; }
.desktop-nav, .header-call { display: none; }

.language-toggle { display: inline-flex; align-items: center; justify-content: center; width: 58px; height: 38px; margin-left: auto; padding: 0; border: 1px solid var(--line); border-radius: 2px; color: #929b97; background: var(--white); font-family: Arial, sans-serif; font-size: 10px; font-weight: 700; }
.language-toggle i { width: 1px; height: 12px; margin: 0 6px; background: var(--line); }
.language-toggle span.active { color: var(--forest-deep); }
.menu-toggle { position: relative; width: 44px; height: 44px; margin-left: 2px; padding: 0; border: 0; background: transparent; }
.menu-toggle span { position: absolute; top: 21px; left: 11px; width: 22px; height: 2px; background: var(--forest-deep); transition: transform 180ms ease, opacity 180ms ease; }
.menu-toggle span:first-child { transform: translateY(-7px); }
.menu-toggle span:last-child { transform: translateY(7px); }
.menu-toggle[aria-expanded="true"] span:first-child { transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:last-child { transform: rotate(-45deg); }
.mobile-nav { position: fixed; inset: 64px 0 0; z-index: 99; padding: 22px 20px calc(30px + env(safe-area-inset-bottom)); overflow-y: auto; background: var(--white); }
.mobile-nav[hidden] { display: none; }
.mobile-nav a { display: flex; align-items: center; min-height: 62px; border-bottom: 1px solid var(--line); color: var(--ink); font-size: 18px; font-weight: 700; text-decoration: none; }
.mobile-nav-call { justify-content: center; min-height: 54px !important; margin-top: 28px; border: 0 !important; border-radius: 2px; color: var(--white) !important; background: var(--forest); font-size: 15px !important; }

.section { padding: 78px 0; }
.eyebrow { margin: 0 0 14px; color: var(--leaf); font-family: Arial, "Microsoft YaHei", sans-serif; font-size: 11px; font-weight: 800; line-height: 1.45; }
.section-heading h2, .founder-copy h2, .expression-copy h2, .contact-copy h2 { margin: 0; color: var(--ink); font-size: 34px; font-weight: 700; line-height: 1.28; }

.hero { position: relative; display: flex; min-height: 620px; padding: 104px 0 40px; overflow: hidden; color: var(--white); background: var(--forest-deep); align-items: flex-end; }
.hero-canvas { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; pointer-events: none; }
.hero-overlay { position: absolute; inset: 0; z-index: 1; background: rgba(4, 23, 18, .12); }
.hero-content { position: relative; z-index: 2; }
.hero .eyebrow { color: #c3dca0; }
.hero-logo { width: 39px; height: 52px; margin-bottom: 10px; object-fit: contain; object-position: left center; filter: drop-shadow(0 6px 14px rgba(0, 0, 0, .18)); }
.hero h1 { margin: 0; color: var(--white); font-size: 52px; font-weight: 800; line-height: 1.05; }
.hero-tagline { margin: 11px 0 0; color: #f2e6c8; font-size: 20px; font-weight: 700; line-height: 1.45; }
.hero-intro { max-width: 620px; margin: 13px 0 0; color: #d8e2dd; font-size: 14px; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 19px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 20px; border: 1px solid currentColor; border-radius: 2px; font-size: 13px; font-weight: 700; text-decoration: none; transition: background 180ms ease, color 180ms ease; }
.button-primary { border-color: var(--white); color: var(--forest-deep); background: var(--white); }
.button-secondary { border-color: rgba(255, 255, 255, .72); color: var(--white); background: rgba(6, 29, 23, .12); }
.hero-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 620px; margin-top: 24px; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .3); }
.hero-facts div { min-width: 0; padding-right: 8px; }
.hero-facts div + div { padding-left: 11px; border-left: 1px solid rgba(255, 255, 255, .24); }
.hero-facts dt { color: var(--white); font-family: Arial, "Microsoft YaHei", sans-serif; font-size: 14px; font-weight: 700; line-height: 1.35; font-variant-numeric: tabular-nums; }
.hero-facts dd { margin-top: 4px; color: #b8c7c0; font-size: 10px; line-height: 1.45; }

.brand-section { background: var(--white); }
.brand-story { display: grid; gap: 28px; margin-top: 38px; }
.brand-lead p { margin: 0; color: var(--forest-deep); font-size: 23px; font-weight: 700; line-height: 1.65; }
.brand-body p { margin: 0; color: #4d5953; font-size: 15px; line-height: 1.95; }
.brand-body p + p { margin-top: 16px; }
.company-heading h2 { max-width: 980px; overflow-wrap: anywhere; }
html[lang="en"] .company-heading h2 { font-size: 30px; line-height: 1.2; }
.company-factory { margin-top: 36px; }
.company-factory img { width: 100%; height: auto; object-fit: contain; background: var(--surface); }
.company-factory figcaption { margin-top: 10px; color: var(--muted); font-size: 10px; line-height: 1.6; }
.company-focus { display: grid; margin-top: 48px; border-top: 1px solid var(--line); }
.company-focus article { position: relative; padding: 26px 0; border-bottom: 1px solid var(--line); }
.company-focus span { color: var(--gold); font-family: Arial, sans-serif; font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; }
.company-focus h3 { margin: 7px 0 8px; color: var(--ink); font-size: 18px; line-height: 1.4; }
.company-focus p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }

.founder-section { color: #d9e6e0; background: var(--navy); }
.founder-grid { display: grid; gap: 38px; }
.certificate img { width: 100%; aspect-ratio: 4 / 2.7; object-fit: cover; background: var(--white); }
.certificate figcaption { margin-top: 12px; color: #a9bbc2; font-size: 10px; line-height: 1.6; }
.founder-copy .eyebrow { color: #bed59a; }
.founder-copy h2 { color: var(--white); font-size: 42px; }
.founder-role { margin: 14px 0 24px; padding-left: 14px; border-left: 3px solid var(--gold); color: #f1dfb9; font-size: 14px; font-weight: 700; line-height: 1.75; }
.founder-copy > p:not(.eyebrow):not(.founder-role) { margin: 0; color: #c5d3d8; font-size: 14px; line-height: 1.95; }
.founder-copy > p + p:not(.founder-role) { margin-top: 13px; }
.founder-notes { display: grid; margin-top: 31px; border-top: 1px solid rgba(255, 255, 255, .18); }
.founder-notes div { display: grid; grid-template-columns: 76px 1fr; gap: 14px; padding: 15px 0; border-bottom: 1px solid rgba(255, 255, 255, .13); }
.founder-notes span { color: #f2dfb6; font-family: Arial, "Microsoft YaHei", sans-serif; font-size: 15px; font-weight: 700; font-variant-numeric: tabular-nums; }
.founder-notes p { margin: 0; color: #adbec4; font-size: 11px; line-height: 1.65; }

.products-section { background: var(--surface); }
.products-heading { display: grid; gap: 18px; }
.products-heading > p { max-width: 620px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.85; }
.product-filters { display: flex; gap: 0; margin: 26px -18px 24px; padding: 0 18px 7px; overflow-x: auto; border-bottom: 1px solid var(--line); scrollbar-width: none; }
.product-filters::-webkit-scrollbar { display: none; }
.product-filters button { position: relative; flex: 0 0 auto; min-height: 43px; padding: 0 17px; border: 0; color: #5d6863; background: transparent; font-size: 13px; font-weight: 700; }
.product-filters button:first-child { padding-left: 0; }
.product-filters button::after { position: absolute; right: 16px; bottom: -8px; left: 16px; height: 3px; background: var(--forest); content: ""; opacity: 0; }
.product-filters button:first-child::after { left: 0; }
.product-filters button.active { color: var(--forest-deep); }
.product-filters button.active::after { opacity: 1; }
.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 12px; }
.product-card { min-width: 0; }
.product-card button { display: grid; width: 100%; height: 100%; padding: 0; overflow: hidden; border: 0; border-radius: 0; color: var(--text); background: transparent; text-align: left; }
.product-image { display: block; width: 100%; aspect-ratio: 1 / 1; overflow: hidden; background: #e9eeeb; }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 420ms ease; }
.product-card button:hover .product-image img, .product-card button:focus-visible .product-image img { transform: scale(1.025); }
.product-card-copy { display: grid; min-height: 106px; padding: 11px 0 0; border-top: 2px solid var(--forest); }
.product-card-heading { display: block; }
.product-series { display: block; margin-bottom: 4px; color: var(--leaf); font-size: 9px; font-weight: 800; }
.product-card h3 { margin: 0; color: var(--ink); font-size: 15px; line-height: 1.4; }
.product-summary { display: none; }
.product-more { display: flex; align-items: center; justify-content: flex-end; align-self: end; margin-top: 7px; color: var(--forest); font-size: 11px; font-weight: 700; }
.product-more span { display: none; }
.product-more b { font-family: Arial, sans-serif; font-size: 18px; font-weight: 400; }

.expression-section { background: var(--white); }
.expression-grid { display: grid; gap: 36px; }
.expression-copy p:last-child { margin: 21px 0 0; color: #4f5b55; font-size: 14px; line-height: 1.95; }
.expression-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.expression-gallery figure { min-width: 0; height: 150px; overflow: hidden; background: var(--surface); }
.expression-gallery .gallery-wide { grid-column: 1 / -1; height: 220px; }
.expression-gallery img { width: 100%; height: 100%; object-fit: cover; }

.contact-section { color: var(--white); background: var(--forest-deep); }
.contact-grid { display: grid; gap: 38px; }
.contact-copy .eyebrow { color: #bed59a; }
.contact-copy h2 { color: var(--white); }
.contact-copy > p:last-child { margin: 15px 0 0; color: #bacac3; font-size: 14px; }
.contact-details { display: grid; border-top: 1px solid rgba(255, 255, 255, .2); font-style: normal; }
.contact-details div { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 12px; padding: 17px 0; border-bottom: 1px solid rgba(255, 255, 255, .17); }
.contact-details span { color: #91a69d; font-size: 11px; }
.contact-details strong, .contact-details a { min-width: 0; color: var(--white); font-size: 14px; font-weight: 700; line-height: 1.7; overflow-wrap: anywhere; text-decoration: none; }
.contact-details a { font-family: Arial, sans-serif; font-size: 22px; font-variant-numeric: tabular-nums; }
.contact-details .wechat-detail { align-items: start; }
.wechat-detail figure { width: 138px; }
.wechat-detail img { width: 138px; height: 138px; padding: 6px; object-fit: contain; background: var(--white); }
.wechat-detail figcaption { margin-top: 8px; color: #bacac3; font-size: 10px; font-style: normal; line-height: 1.5; }

.site-footer { padding: 50px 0 calc(108px + env(safe-area-inset-bottom)); color: #a9b4ae; background: #111815; }
.footer-top { display: grid; gap: 23px; padding-bottom: 30px; border-bottom: 1px solid rgba(255, 255, 255, .13); }
.footer-brand { color: var(--white); font-size: 25px; font-weight: 800; text-decoration: none; }
.footer-top nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-top nav a { color: #bdc7c2; font-size: 12px; text-decoration: none; }
.legal { padding: 28px 0; border-bottom: 1px solid rgba(255, 255, 255, .13); }
.legal h2 { margin: 0 0 17px; color: #dbe2de; font-size: 13px; }
.legal-grid { display: grid; gap: 11px; }
.legal-grid p { margin: 0; color: #859189; font-size: 10px; line-height: 1.85; }
.copyright { display: grid; gap: 5px; padding-top: 22px; color: #758079; font-size: 10px; }

.mobile-contact { position: fixed; right: 14px; bottom: calc(14px + env(safe-area-inset-bottom)); z-index: 90; display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 17px; border: 1px solid rgba(255, 255, 255, .45); border-radius: 4px; color: var(--white); background: var(--forest); box-shadow: 0 12px 30px rgba(13, 48, 40, .28); font-size: 13px; font-weight: 700; text-decoration: none; opacity: 0; transform: translateY(64px) scale(.96); transition: opacity 220ms ease, transform 220ms ease; pointer-events: none; }
.mobile-contact::after { margin-left: 10px; font-family: Arial, sans-serif; font-size: 17px; font-weight: 400; content: "\2193"; }
.mobile-contact.visible { opacity: 1; transform: none; pointer-events: auto; }

.product-dialog { width: min(800px, calc(100% - 24px)); max-height: calc(100dvh - 24px); padding: 0; overflow: auto; border: 0; border-radius: 4px; color: var(--text); background: var(--white); box-shadow: 0 28px 80px rgba(0, 0, 0, .34); }
.product-dialog::backdrop { background: rgba(8, 18, 14, .74); }
.dialog-layout figure { width: 100%; height: 250px; overflow: hidden; background: var(--surface); }
.dialog-layout figure img { width: 100%; height: 100%; object-fit: cover; }
.dialog-copy { position: relative; padding: 29px 24px 31px; }
.dialog-close { position: absolute; top: 12px; right: 12px; display: grid; width: 42px; height: 42px; padding: 0; border: 1px solid var(--line); border-radius: 50%; color: var(--ink); background: var(--white); font-family: Arial, sans-serif; font-size: 26px; font-weight: 300; line-height: 1; place-items: center; }
.dialog-copy .eyebrow { padding-right: 48px; }
.dialog-copy h2 { margin: 0; color: var(--ink); font-size: 28px; line-height: 1.3; }
.dialog-copy > p:not(.eyebrow) { margin: 18px 0 23px; color: #4f5a54; font-size: 14px; line-height: 1.95; }
.dialog-copy small { display: block; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 10px; line-height: 1.7; }
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 560ms ease, transform 560ms ease; }
.js .reveal.visible { opacity: 1; transform: none; }

html[lang="en"] .hero .eyebrow { max-width: 350px; font-size: 9px; }
html[lang="en"] .hero h1 { max-width: 340px; font-size: 45px; }
html[lang="en"] .hero-tagline { max-width: 350px; font-size: 18px; }
html[lang="en"] .hero-intro { max-width: 360px; font-size: 13px; line-height: 1.7; }
html[lang="en"] .hero-facts dt { font-size: 12px; }
html[lang="en"] .brand-lead p { font-size: 19px; }

@media (min-width: 600px) {
  .container { width: min(calc(100% - 56px), var(--content)); }
  .section { padding: 94px 0; }
  .hero { min-height: 650px; padding: 112px 0 46px; }
  .hero h1 { font-size: 64px; }
  .company-focus { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .company-focus article { padding: 27px 22px; border-bottom: 0; }
  .company-focus article:first-child { padding-left: 0; }
  .company-focus article + article { border-left: 1px solid var(--line); }
  .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 34px 18px; }
  .expression-gallery figure { height: 210px; }
  .expression-gallery .gallery-wide { height: 320px; }
  .dialog-layout figure { height: 360px; }
  .copyright { grid-template-columns: 1fr auto; }
}

@media (min-width: 880px) {
  body { padding-bottom: 0; }
  .header-inner { width: min(calc(100% - 56px), var(--content)); height: 72px; }
  .brand-mark { flex-basis: 34px; width: 34px; height: 48px; }
  .brand-mark img { width: 31px; height: 43px; }
  .brand-name strong { font-size: 20px; }
  .desktop-nav { display: flex; align-items: center; gap: 34px; margin-left: auto; }
  .desktop-nav a { position: relative; padding: 25px 0 23px; color: #46514c; font-size: 13px; font-weight: 700; text-decoration: none; }
  .desktop-nav a::after { position: absolute; right: 0; bottom: 16px; left: 0; height: 2px; background: var(--forest); content: ""; transform: scaleX(0); transition: transform 180ms ease; }
  .desktop-nav a:hover::after, .desktop-nav a:focus-visible::after { transform: scaleX(1); }
  .language-toggle { margin-left: 25px; }
  .header-call { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; margin-left: 10px; padding: 0 17px; border: 1px solid var(--forest); border-radius: 2px; color: var(--forest); font-size: 12px; font-weight: 700; text-decoration: none; }
  .menu-toggle, .mobile-nav, .mobile-contact { display: none !important; }
  .section { padding: 96px 0; }
  .section-heading h2, .founder-copy h2, .expression-copy h2, .contact-copy h2 { font-size: 46px; }
  .hero { min-height: 570px; padding: 104px 0 36px; align-items: center; }
  .hero-content { padding-right: 38%; }
  .hero-logo { width: 48px; height: 64px; }
  .hero h1 { font-size: 70px; }
  .hero-tagline { font-size: 23px; }
  .hero-intro { font-size: 15px; }
  html[lang="en"] .hero h1 { max-width: 650px; font-size: 62px; }
  html[lang="en"] .hero-tagline { max-width: 620px; font-size: 21px; }
  html[lang="en"] .hero-intro { max-width: 600px; font-size: 14px; }
  html[lang="en"] .company-heading h2 { font-size: 42px; }
  .company-factory { margin-top: 30px; }
  .company-factory img { height: clamp(420px, 35vw, 500px); object-fit: cover; object-position: center 62%; }
  .brand-story { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 72px; margin-top: 42px; }
  .brand-lead p { font-size: 27px; }
  .brand-body p { font-size: 16px; }
  .company-focus { margin-top: 52px; }
  .founder-grid { grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr); gap: 64px; align-items: center; }
  .founder-copy h2 { font-size: 52px; }
  .products-heading { grid-template-columns: 1fr minmax(380px, .72fr); gap: 76px; align-items: end; }
  .product-filters { margin: 34px 0 28px; padding: 0 0 7px; }
  .product-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 34px 18px; }
  .product-card-copy { min-height: 150px; padding-top: 13px; }
  .product-card h3 { font-size: 18px; }
  .product-summary { display: -webkit-box; margin-top: 9px; overflow: hidden; color: #58635e; font-size: 12px; line-height: 1.7; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
  .product-more { justify-content: space-between; margin-top: 11px; padding-top: 10px; border-top: 1px solid var(--line); }
  .product-more span { display: inline; }
  .expression-grid { grid-template-columns: minmax(320px, .72fr) minmax(0, 1.28fr); gap: 68px; align-items: center; }
  .expression-copy p:last-child { font-size: 15px; }
  .expression-gallery figure { height: 190px; }
  .expression-gallery .gallery-wide { height: 290px; }
  .contact-grid { grid-template-columns: minmax(0, .82fr) minmax(460px, 1.18fr); gap: 72px; align-items: center; }
  .contact-details div { grid-template-columns: 100px minmax(0, 1fr); }
  .wechat-detail figure, .wechat-detail img { width: 156px; }
  .wechat-detail img { height: 156px; }
  .site-footer { padding: 62px 0 30px; }
  .footer-top { grid-template-columns: 1fr auto; align-items: center; }
  .legal-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 52px; }
  .dialog-layout { display: grid; grid-template-columns: 1.05fr .95fr; min-height: 480px; }
  .dialog-layout figure { height: 100%; min-height: 480px; }
  .dialog-copy { display: flex; flex-direction: column; justify-content: center; padding: 56px 40px 42px; }
}

@media (min-width: 1180px) {
  .product-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 32px 18px; }
  .product-card h3 { font-size: 17px; }
}

@media (min-width: 880px) and (max-width: 1080px) {
  .desktop-nav { gap: 20px; }
  .language-toggle { margin-left: 16px; }
  .header-call { padding-inline: 12px; }
  .brand-name small { display: none; }
  .hero-content { padding-right: 32%; }
  .founder-grid { grid-template-columns: minmax(0, 1fr) minmax(330px, .9fr); gap: 42px; }
}

@media (max-width: 879px) { body { padding-bottom: 0; } }
@media (max-width: 380px) {
  .container { width: calc(100% - 28px); }
  .brand-name small { display: none; }
  .hero { min-height: 610px; padding: 96px 0 30px; }
  .hero h1 { font-size: 47px; }
  .hero-tagline { font-size: 18px; }
  .section-heading h2, .founder-copy h2, .expression-copy h2, .contact-copy h2 { font-size: 31px; }
  .mobile-contact { right: 10px; padding: 0 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .js .reveal { opacity: 1; transform: none; }
}