:root {
      --green-950: #082f28;
      --green-900: #0b3d33;
      --green-800: #115344;
      --green-700: #176b57;
      --green-600: #24826b;
      --mint-100: #e9f3ee;
      --mint-50: #f4f8f5;
      --cream: #f6f3ed;
      --ink: #10221d;
      --muted: #607069;
      --line: #dbe4de;
      --white: #fff;
      --orange: #ef8d3e;
      --max: 1200px;
      --shadow: 0 22px 60px rgba(5, 44, 36, .12);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--white);
      font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; }
    a { color: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .wrap { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
    .eyebrow {
      margin: 0 0 12px;
      color: var(--green-700);
      font-size: .78rem;
      font-weight: 800;
      letter-spacing: .16em;
      text-transform: uppercase;
    }
    .section-title {
      margin: 0;
      max-width: 760px;
      font-size: 3.4rem;
      line-height: 1.12;
      letter-spacing: 0;
    }
    .section-intro {
      margin: 20px 0 0;
      max-width: 690px;
      color: var(--muted);
      font-size: 1.02rem;
    }
    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 32px;
      margin-bottom: 42px;
    }
    .text-link {
      flex: 0 0 auto;
      color: var(--green-700);
      font-weight: 800;
      text-decoration: none;
    }
    .text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
    .btn {
      display: inline-flex;
      min-height: 48px;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 12px 22px;
      border: 1px solid transparent;
      border-radius: 3px;
      font-weight: 800;
      text-decoration: none;
      transition: transform .2s ease, background .2s ease, border-color .2s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn-primary { background: var(--orange); color: #251208; }
    .btn-outline { border-color: rgba(255, 255, 255, .55); color: var(--white); }
    .btn-outline:hover { background: rgba(255, 255, 255, .1); }
    .btn-green { background: var(--green-800); color: var(--white); }

    .topbar {
      padding: 8px 0;
      color: rgba(255,255,255,.78);
      background: var(--green-950);
      font-size: .78rem;
    }
    .topbar .wrap { display: flex; justify-content: space-between; gap: 20px; }
    .topbar a { color: inherit; text-decoration: none; }
    .site-header {
      position: sticky;
      z-index: 30;
      top: 0;
      border-bottom: 1px solid rgba(14, 65, 53, .1);
      background: rgba(255,255,255,.96);
      backdrop-filter: blur(14px);
    }
    .nav-shell {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }
    .brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
    .brand img { width: 44px; height: 44px; }
    .brand-copy { display: grid; line-height: 1.15; }
    .brand-copy strong { color: var(--green-900); font-size: 1.1rem; letter-spacing: .04em; }
    .brand-copy span { color: var(--muted); font-size: .66rem; letter-spacing: .08em; }
    .nav-links { display: flex; align-items: center; gap: 28px; }
    .nav-links > a:not(.btn) {
      color: #2c3e37;
      font-size: .9rem;
      font-weight: 700;
      text-decoration: none;
    }
    .nav-links > a:not(.btn):hover { color: var(--green-700); }
    .nav-links .btn { min-height: 42px; padding: 8px 18px; }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      padding: 11px;
      border: 1px solid var(--line);
      border-radius: 4px;
      background: #fff;
    }
    .menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--green-900); }

    .hero {
      position: relative;
      min-height: 680px;
      overflow: hidden;
      color: var(--white);
      background: var(--green-950);
    }
    .hero::before {
      position: absolute;
      inset: 0;
      content: "";
      background: rgba(8,47,40,.72);
      z-index: 1;
    }
    .hero-media { position: absolute; inset: 0 0 0 46%; }
    .hero-media picture, .hero-media img { display: block; width: 100%; height: 100%; }
    .hero-media img { object-fit: cover; object-position: center; }
    .hero .wrap { position: relative; z-index: 2; display: flex; min-height: 680px; align-items: center; }
    .hero-copy { max-width: 660px; padding: 86px 0 110px; }
    .hero .eyebrow { color: #a7d5c7; }
    .hero h1 {
      margin: 0;
      font-size: 5rem;
      line-height: 1.03;
      letter-spacing: 0;
    }
    .hero h1 span { display: block; color: #d7eee5; }
    .hero-description { max-width: 610px; margin: 26px 0 0; color: rgba(255,255,255,.79); font-size: 1.08rem; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
    .hero-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 38px; }
    .hero-tags span {
      padding: 7px 12px;
      border: 1px solid rgba(255,255,255,.22);
      color: rgba(255,255,255,.82);
      font-size: .78rem;
    }

    .proof { position: relative; z-index: 3; margin-top: -54px; }
    .proof-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      box-shadow: var(--shadow);
      background: var(--white);
    }
    .proof-item { min-height: 116px; padding: 25px 26px; border-right: 1px solid var(--line); }
    .proof-item:last-child { border-right: 0; }
    .proof-item strong { display: block; color: var(--green-900); font-size: 1.02rem; }
    .proof-item span { display: block; margin-top: 4px; color: var(--muted); font-size: .82rem; line-height: 1.5; }

    .applications { padding: 120px 0 108px; }
    .application-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .application-card {
      position: relative;
      min-height: 430px;
      overflow: hidden;
      background: var(--green-900);
      color: var(--white);
      text-decoration: none;
    }
    .application-card::after {
      position: absolute;
      inset: 0;
      content: "";
      background: linear-gradient(180deg, rgba(6,38,31,.05) 26%, rgba(6,38,31,.92) 100%);
    }
    .application-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease; }
    .application-card:hover img { transform: scale(1.035); }
    .application-copy { position: absolute; z-index: 2; inset: auto 24px 24px; }
    .application-copy small { color: #b8ded1; font-weight: 800; letter-spacing: .08em; }
    .application-copy h3 { margin: 6px 0 3px; font-size: 1.35rem; }
    .application-copy p { margin: 0; color: rgba(255,255,255,.72); font-size: .8rem; }

    .profile { overflow: hidden; background: var(--cream); }
    .profile-grid { display: grid; grid-template-columns: 1.06fr .94fr; min-height: 690px; }
    .profile-media { min-height: 580px; }
    .profile-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .profile-copy { display: flex; flex-direction: column; justify-content: center; padding: 80px max(40px, calc((100vw - var(--max)) / 2)) 80px 72px; }
    .profile-copy .section-title { font-size: 3.25rem; }
    .profile-copy > p:not(.eyebrow) { margin: 24px 0 0; color: var(--muted); }
    .profile-points { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin: 34px 0; }
    .profile-point { padding-top: 16px; border-top: 2px solid var(--green-700); }
    .profile-point strong { display: block; color: var(--green-900); }
    .profile-point span { color: var(--muted); font-size: .82rem; }
    .profile-copy .btn { align-self: flex-start; }

    .products { padding: 118px 0; background: var(--mint-50); }
    .product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .product-card { display: flex; flex-direction: column; overflow: hidden; background: var(--white); box-shadow: 0 14px 40px rgba(12, 58, 47, .07); }
    .product-media { aspect-ratio: 1 / 1; overflow: hidden; background: #edf2ef; }
    .product-media img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
    .product-card:hover .product-media img { transform: scale(1.025); }
    .product-copy { display: flex; flex: 1; flex-direction: column; padding: 26px; }
    .product-code { color: #a64b12; font-size: .76rem; font-weight: 800; letter-spacing: .1em; }
    .product-copy h3 { margin: 8px 0 10px; color: var(--green-900); font-size: 1.24rem; line-height: 1.35; }
    .product-copy p { margin: 0; color: var(--muted); font-size: .84rem; }
    .specs { display: flex; flex-wrap: wrap; gap: 7px; margin: 20px 0 22px; }
    .specs span { padding: 5px 9px; background: var(--mint-100); color: var(--green-800); font-size: .72rem; font-weight: 700; }
    .product-copy .text-link { margin-top: auto; font-size: .86rem; }

    .workflow { padding: 118px 0; }
    .workflow-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 78px; align-items: start; }
    .workflow-steps { counter-reset: workflow; }
    .workflow-step {
      position: relative;
      display: grid;
      grid-template-columns: 64px 1fr;
      gap: 20px;
      padding: 0 0 34px;
      counter-increment: workflow;
    }
    .workflow-step::before {
      content: "0" counter(workflow);
      display: grid;
      width: 54px;
      height: 54px;
      place-items: center;
      background: var(--green-900);
      color: var(--white);
      font-weight: 800;
    }
    .workflow-step::after { position: absolute; top: 54px; bottom: 0; left: 26px; width: 1px; content: ""; background: var(--line); }
    .workflow-step:last-child { padding-bottom: 0; }
    .workflow-step:last-child::after { display: none; }
    .workflow-step h3 { margin: 0 0 5px; font-size: 1.08rem; }
    .workflow-step p { margin: 0; color: var(--muted); font-size: .86rem; }

    .collaboration { padding: 110px 0; color: var(--white); background: var(--green-900); }
    .collaboration .eyebrow { color: #a7d5c7; }
    .collaboration .section-title { max-width: 850px; }
    .collaboration-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 44px; }
    .collaboration-card { padding: 34px; border: 1px solid rgba(255,255,255,.16); background: rgba(255,255,255,.045); }
    .collaboration-card small { color: #a7d5c7; font-weight: 800; letter-spacing: .1em; }
    .collaboration-card h3 { margin: 8px 0 12px; font-size: 1.45rem; }
    .collaboration-card p { margin: 0; color: rgba(255,255,255,.7); }

    section, #inquiryForm, #stock-table, #resources, #catalog-details { scroll-margin-top: 96px; }
    a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }
    .catalog { padding: 0 0 80px; background: var(--mint-50); }
    .catalog-details { border: 1px solid var(--line); background: #fff; }
    .catalog-details > summary { padding: 22px 26px; cursor: pointer; font-weight: 800; color: var(--green-900); font-size: 1.1rem; }
    .catalog-content { padding: 0 26px 26px; min-width: 0; }
    .catalog-filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
    .product-filter-button { padding: 9px 14px; border: 1px solid var(--line); border-radius: 3px; background: #fff; font: inherit; font-size: .82rem; color: var(--green-900); cursor: pointer; }
    .product-filter-button[aria-pressed="true"] { background: var(--green-800); border-color: var(--green-800); color: #fff; }
    #productFilterStatus { color: var(--muted); font-size: .82rem; }
    .catalog-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; margin: 22px 0; }
    .product-showcase-card { padding: 18px; border: 1px solid var(--line); background: var(--mint-50); }
    .product-showcase-card h3 { margin: 8px 0; font-size: 1rem; line-height: 1.5; }
    .product-showcase-card h3 a { text-decoration: none; }
    .product-showcase-card h3 a:hover { text-decoration: underline; }
    .product-showcase-card p { margin: 0; font-size: .8rem; color: var(--muted); }
    .product-showcase-card[hidden], .product-table tbody tr[hidden] { display: none !important; }
    .table-scroll { max-width: 100%; overflow-x: auto; border: 1px solid var(--line); }
    .product-table { width: 100%; min-width: 900px; border-collapse: collapse; font-size: .82rem; }
    .product-table th, .product-table td { padding: 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    .product-table th { color: #fff; background: var(--green-800); }
    .product-table td:first-child { min-width: 210px; }
    .product-table td:last-child { white-space: nowrap; }
    .product-name { margin: 0 0 8px; font-size: .95rem; }
    .tag-row { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 8px; color: var(--muted); font-size: .72rem; }
    .tag { padding: 3px 6px; background: var(--mint-100); }
    .resources { margin-top: 26px; }
    .resources p { color: var(--muted); font-size: .86rem; }
    .resource-links { display: flex; flex-wrap: wrap; gap: 8px; }
    .resource-links a { padding: 9px 12px; border: 1px solid var(--line); font-size: .8rem; color: var(--green-700); }
    .faq { padding: 88px 0; }
    .faq-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; align-items: start; }
    .faq-card { padding: 20px; border: 1px solid var(--line); background: #fff; }
    .faq-card summary { cursor: pointer; font-weight: 800; color: var(--green-900); }
    .faq-card p { margin: 12px 0 0; color: var(--muted); font-size: .9rem; }
    .honeypot-field { position: absolute; width: 1px; height: 1px; padding: 0; clip-path: inset(50%); overflow: hidden; }
    .form-note { margin: 0; color: var(--muted); font-size: .74rem; }
    .map-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; color: var(--green-700); font-size: .8rem; }
    .footer-compliance { margin: 24px 0 0; font-size: .8rem; }
    .contact { padding: 104px 0; background: var(--cream); }
    .contact-shell { position: relative; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 34px; align-items: stretch; }
    .contact-copy { padding-bottom: 340px; }
    .contact-copy .section-title { max-width: 780px; }
    .contact-copy p { max-width: 700px; margin: 22px 0 0; color: var(--muted); }
    .contact-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
    .contact-details { display: grid; gap: 8px; margin-top: 26px; color: var(--green-900); font-size: .88rem; font-weight: 700; }
    .inquiry-card { padding: 26px; background: var(--white); box-shadow: var(--shadow); }
    .inquiry-card h3 { margin: 0 0 16px; color: var(--green-900); font-size: 1.25rem; }
    .inquiry-form { display: grid; gap: 12px; }
    .inquiry-form label { display: grid; gap: 5px; color: var(--green-900); font-size: .8rem; font-weight: 700; }
    .inquiry-form input, .inquiry-form select, .inquiry-form textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 2px; color: var(--ink); background: #fff; font: inherit; font-size: .84rem; }
    .inquiry-form textarea { min-height: 100px; resize: vertical; }
    .inquiry-form button { width: 100%; cursor: pointer; }
    .inquiry-form button:disabled { cursor: wait; opacity: .68; }
    .inquiry-status { min-height: 1.4em; margin: 0; color: var(--muted); font-size: .78rem; }
    .inquiry-status.is-success { color: var(--green-700); }
    .inquiry-status.is-error { color: #a83d2a; }
    .qr { position: absolute; bottom: 0; left: 0; padding: 14px; background: var(--white); box-shadow: var(--shadow); }
    .qr img { display: block; width: 180px; height: auto; }
    .qr p { margin: 9px 0 0; color: var(--muted); font-size: .74rem; text-align: center; }

    .site-footer { padding: 54px 0 26px; color: rgba(255,255,255,.73); background: #06241e; }
    .footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 48px; }
    .footer-brand { color: var(--white); font-size: 1.2rem; font-weight: 800; }
    .footer-grid h3 { margin: 0 0 13px; color: var(--white); font-size: .9rem; }
    .footer-grid p, .footer-grid a { color: rgba(255,255,255,.68); font-size: .8rem; text-decoration: none; }
    .footer-links { display: grid; gap: 8px; }
    .footer-links a:hover { color: var(--white); }
    .footer-bottom { margin-top: 40px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); font-size: .72rem; }

    @media (max-width: 980px) {
      .nav-links { display: none; position: absolute; top: 76px; right: 20px; left: 20px; padding: 20px; align-items: stretch; flex-direction: column; gap: 8px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow); }
      .nav-links.is-open { display: flex; }
      .nav-links > a { padding: 10px; }
      .menu-toggle { display: block; }
      .hero-media { inset: 0 0 0 35%; opacity: .7; }
      .proof-grid { grid-template-columns: 1fr 1fr; }
      .proof-item:nth-child(2) { border-right: 0; }
      .proof-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .application-grid { grid-template-columns: 1fr 1fr; }
      .profile-grid { grid-template-columns: 1fr; }
      .profile-media { min-height: 480px; }
      .profile-copy { padding: 70px max(24px, calc((100vw - var(--max)) / 2)); }
      .workflow-grid { grid-template-columns: 1fr; gap: 44px; }
      .contact-shell { grid-template-columns: 1fr; gap: 36px; }
      .contact-copy { padding-bottom: 0; }
      .qr { position: static; justify-self: center; }
    }

    @media (max-width: 720px) {
      .wrap { width: min(100% - 28px, var(--max)); }
      .topbar .wrap span:last-child { display: none; }
      .brand-copy span { display: none; }
      .hero, .hero .wrap { min-height: 640px; }
      .hero::before { background: rgba(8,47,40,.76); }
      .hero-media { inset: 0; opacity: .62; }
      .hero-media img { object-position: 58% center; }
      .hero-copy { align-self: end; padding: 140px 0 106px; }
      .hero h1 { font-size: 3.35rem; }
      .hero-description { font-size: .96rem; }
      .hero-actions .btn { width: 100%; }
      .hero-tags { display: none; }
      .proof { margin-top: -32px; }
      .proof-grid { grid-template-columns: 1fr 1fr; }
      .proof-item { min-height: 108px; padding: 20px 17px; }
      .applications, .products, .workflow { padding: 88px 0; }
      .section-head { align-items: start; flex-direction: column; margin-bottom: 30px; }
      .faq-grid, .catalog-grid, .application-grid, .product-grid, .collaboration-grid, .footer-grid { grid-template-columns: 1fr; }
      .application-card { min-height: 400px; }
      .catalog-content { padding: 0 16px 20px; }
      .catalog-details > summary { padding: 20px 16px; }
      .profile-media { min-height: 370px; }
      .profile-copy { padding: 66px 22px; }
      .profile-points { grid-template-columns: 1fr; gap: 14px; }
      .collaboration { padding: 86px 0; }
      .contact { padding: 78px 0; }
      .contact-shell { grid-template-columns: 1fr; }
      .contact-actions .btn { width: 100%; }
      .qr { justify-self: center; }
    }

    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition-duration: .001ms !important; }
    }

/* English typography and the product detail layout share the approved homepage palette. */
body { font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif; }
main, .wrap, .hero-copy, .product-copy, .contact-copy, .profile-copy { min-width: 0; }
h1, h2, h3, p, .footer-bottom { overflow-wrap: break-word; }
.nav-links { gap: 22px; }
.brand-copy strong { letter-spacing: .08em; }
.hero h1 { font-size: 5rem; letter-spacing: 0; }
.hero-description { max-width: 600px; }
.section-title { letter-spacing: 0; }
.skip-link { position: fixed; z-index: 100; top: -100px; left: 16px; padding: 12px 18px; color: #fff; background: var(--green-900); }
.skip-link:focus { top: 12px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 10px; padding: 26px 0; color: var(--green-700); font-size: .85rem; }
.breadcrumb a { text-decoration: none; }
.detail-hero { padding: 38px 0 70px; background: var(--cream); }
.detail-hero-grid { display: grid; grid-template-columns: minmax(0,1.12fr) minmax(0,.88fr); gap: 64px; align-items: center; }
.detail-hero h1 { margin: 0 0 24px; color: var(--green-900); font-size: 3.5rem; line-height: 1.1; letter-spacing: 0; }
.detail-intro { color: var(--muted); font-size: 1.05rem; }
.detail-image { display: block; max-width: 480px; width: 100%; justify-self: end; background: var(--white); box-shadow: var(--shadow); }
.detail-image img { display: block; width: 100%; height: auto; }
.detail-section { padding: 80px 0; }
.detail-section .section-title { font-size: 2.5rem; margin-bottom: 28px; }
.detail-section.soft { background: var(--mint-50); }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.detail-grid article { padding: 32px; border: 1px solid var(--line); background: var(--white); }
.detail-grid h2 { margin: 0 0 18px; color: var(--green-900); font-size: 1.5rem; line-height: 1.25; }
.detail-grid p, .detail-grid li { color: var(--muted); }
.detail-grid li + li { margin-top: 12px; }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table caption { text-align: left; padding-bottom: 14px; font-weight: 800; color: var(--green-900); }
.spec-table th, .spec-table td { padding: 18px 22px; border: 1px solid var(--line); text-align: left; }
.spec-table th { width: 30%; color: var(--green-900); background: var(--mint-100); }
.spec-table td { background: var(--white); }
.spec-note { color: var(--muted); font-size: .85rem; }
.detail-related .product-copy h3 { font-size: 1.08rem; }
.contact-line { margin-top: 20px; color: var(--green-900); font-size: .9rem; }
.inquiry-status a { color: var(--green-700); font-weight: 700; }
@media (max-width: 980px) {
  .detail-hero-grid { gap: 34px; }
  .detail-hero h1 { font-size: 2.6rem; }
}
@media (max-width: 720px) {
  .nav-shell { gap: 12px; }
  .brand-copy strong { font-size: 1rem; }
  .section-title { font-size: 2rem; }
  .hero h1 { font-size: 3.35rem; }
  .profile-copy .section-title { font-size: 2.4rem; }
  .detail-hero h1 { font-size: 2.6rem; }
  .detail-section .section-title { font-size: 2rem; }
  .detail-hero-grid, .detail-grid { grid-template-columns: 1fr; }
  .detail-hero { padding: 12px 0 50px; }
  .detail-image { max-width: 100%; }
  .detail-section { padding: 54px 0; }
  .detail-grid { gap: 20px; }
  .detail-grid article { padding: 24px; }
  .spec-table th, .spec-table td { padding: 12px; font-size: .86rem; }
  .spec-table th { width: 38%; }
}