.desktop-detail-breadcrumb,
.desktop-related-products { display: none; }
.desktop-contact-label { display: none; }

@media (min-width: 900px) {
  body { background: #fff; color: #333; font-family: "Microsoft YaHei", Arial, sans-serif; }
  .site-shell { width: 100%; max-width: none; overflow: visible; }

  .site-header {
    display: grid;
    grid-template-areas: "welcome welcome" "brand contact" "nav nav";
    grid-template-columns: minmax(0, 1fr) 210px;
    width: 1000px;
    margin: 0 auto;
    padding: 0;
    background: #fff;
  }
  .desktop-welcome {
    display: flex;
    grid-area: welcome;
    align-items: center;
    justify-content: space-between;
    height: 58px;
    border-bottom: 1px solid #e5e5e5;
    color: #888;
    font-size: 12px;
  }
  .desktop-welcome a { margin-left: 25px; color: #666; text-decoration: none; }
  .brand { grid-area: brand; gap: 26px; margin: 0; padding: 8px 0 2px; }
  .desktop-original-logo { display: block; width: 150px; height: 105px; object-fit: contain; }
  .brand-mark { display: none; }
  .brand > span:last-child { align-self: center; }
  .brand strong { color: #088ac6; font-size: 18px; }
  .brand strong::after { content: "  匠心营造"; color: #222; font-size: 18px; }
  .brand small { margin-top: 8px; color: #777; font-size: 12px; }
  .desktop-contact { align-items: flex-start; margin: 0; padding: 22px 0 0 18px; border: 0; }
  .desktop-contact small { color: #555; font-size: 14px; }
  .desktop-contact a { margin-top: 0; color: #069ad4; font-size: 24px; }
  .site-nav, .site-nav.open {
    display: flex;
    grid-area: nav;
    justify-content: flex-end;
    gap: 0;
    margin: 0 0 0 170px;
    padding: 0;
    border: 0;
    background: #fff;
  }
  .site-nav a {
    min-width: 0;
    padding: 17px 27px 18px;
    border: 0 !important;
    background: #fff;
    color: #333;
    font-size: 15px;
  }
  .site-nav a:hover { background: #fff; color: #0799d5; }

  main { display: flex; flex-direction: column; }
  .hero { order: 0; height: 578px; }
  .hero-carousel .hero-slide img { object-fit: cover; }
  .desktop-hot-products {
    display: block;
    order: 0;
    width: 1000px;
    margin: 0 auto;
    padding: 23px 0 17px;
    color: #666;
    font-size: 18px;
    font-weight: 700;
    text-align: center;
  }
  .home-seo-lead {
    width: 1000px;
    margin: -4px auto 0;
    padding: 0 0 18px;
    color: #8a8a8a;
    font-size: 13px;
    line-height: 1.9;
    text-align: center;
  }
  .quick-points { display: none; }

  .recommended-section { order: 1; width: 1000px; margin: 0 auto; padding: 26px 0 52px; background: #fff; }
  .recommended-section .reference-heading {
    height: 48px;
    margin: 0 0 17px;
    background: url('pc-product-title.png') no-repeat center bottom;
    text-align: center;
  }
  .recommended-section .reference-heading > span,
  .recommended-section .reference-heading h2 img { display: none; }
  .recommended-section .reference-heading h2 { position: static; color: #078ecb; font-size: 21px; }
  .recommended-section .reference-heading > a { top: 7px; right: 0; color: #888; }
  .recommended-section .category-links {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 10px 8px;
    margin: 0 0 22px;
  }
  .recommended-section .category-links a {
    padding: 11px 6px;
    border: 1px solid #e6e6e6;
    border-radius: 999px;
    background: #fafafa;
    color: #666;
    font-size: 13px;
    text-align: center;
    white-space: nowrap;
  }
  .recommended-section .category-links a:hover { border-color: #078ecb; color: #078ecb; background: #f4fbff; }
  .recommended-section .product-grid { grid-template-columns: repeat(3, 1fr); gap: 34px 35px; }
  .recommended-section .product-card {
    display: block;
    min-width: 0;
    padding: 0 0 20px;
    border: 0;
    border-bottom: 3px solid #d2d2d2;
    border-radius: 0;
    background: #fff;
    box-shadow: none;
  }
  .recommended-section .product-card:hover { border-bottom-color: #0799d5; }
  .recommended-section .product-card img { width: 100%; height: 228px; aspect-ratio: auto; object-fit: contain; }
  .recommended-section .product-card strong { display: block; padding: 12px 10px 0; color: #222; font-size: 15px; font-weight: 400; }
  .recommended-section .product-card small { display: none; }

  .desktop-why {
    display: block;
    order: 2;
    width: 100%;
    height: 533px;
    overflow: hidden;
    background: #eaf7ff url('why-choose-us.jpg') no-repeat center top;
    background-size: 1920px 533px;
  }
  .desktop-why-inner { position: relative; width: 1000px; height: 100%; margin: 0 auto; }
  .desktop-why-heading { position: absolute; top: 24px; left: 50%; width: 390px; text-align: center; transform: translateX(-50%); }
  .desktop-why-heading h2 { margin: 0; color: #213d4e; font-size: 25px; }
  .desktop-why-heading p { margin: 5px 0 0; color: #1595d1; font-size: 12px; }
  .desktop-why-item { position: absolute; width: 245px; color: #2a3c48; }
  .desktop-why-item h3 { margin: 0 0 8px; font-size: 18px; }
  .desktop-why-item p { margin: 0; color: #516672; font-size: 13px; line-height: 1.65; }
  .desktop-why-service { top: 178px; left: 0; }
  .desktop-why-material { top: 178px; right: 0; text-align: right; }
  .desktop-why-quality { top: 386px; left: 0; }
  .desktop-why-efficient { top: 386px; right: 0; text-align: right; }

  .about-band {
    order: 3;
    display: grid;
    grid-template-columns: 450px 1fr;
    gap: 38px;
    width: 1000px;
    margin: 0 auto;
    padding: 56px 0 62px;
    border-top: 1px solid #eee;
    background: #fff;
  }
  .about-band::before { content: "关于我们"; position: absolute; left: 50%; margin-top: -48px; color: #1595d1; font-size: 20px; font-weight: 700; transform: translateX(-50%); }
  .about-image { position: relative; min-height: 280px; height: 280px; padding: 0; overflow: hidden; background: #f4f6f7; }
  .about-image > img { display: block; width: 100%; height: 100%; object-fit: contain; }
  .about-image::after { display: none; }
  .about-image span { display: none; }
  .about-copy { display: block; padding: 0; }
  .about-copy > span { display: none; }
  .about-copy h2 { margin: 5px 0 16px; color: #1797d2; font-size: 20px; }
  .about-copy p { max-height: 144px; margin: 0; overflow: hidden; color: #666; font-size: 14px; line-height: 2; }
  .about-copy a { display: inline-block; margin-top: 15px; padding: 7px 24px; background: #1295d1; color: #fff; font-size: 13px; text-decoration: none; }

  .cases-grid-section { order: 4; width: 1000px; margin: 0 auto; padding: 45px 0 58px; background: #fff; }
  .cases-grid-section .reference-heading { margin-bottom: 25px; border-bottom: 1px solid #ddd; }
  .cases-grid-section .reference-heading > span,
  .cases-grid-section .reference-heading h2 img { display: none; }
  .cases-grid-section .reference-heading h2 { color: #1595d1; font-size: 21px; }
  .cases-section-lead {
    margin: -8px 0 20px;
    color: #8a8a8a;
    font-size: 13px;
    line-height: 1.8;
    text-align: center;
  }
  .cases-grid-section .case-scroll { display: flex; gap: 28px; overflow: hidden; }
  .cases-grid-section .case-card { display: block; flex: 0 0 229px; width: 229px; border: 0; border-radius: 0; background: #fff; box-shadow: none; }
  .cases-grid-section .case-card img { width: 100%; height: 156px; object-fit: cover; transition: transform .25s ease; }
  .cases-grid-section .case-card::after { display: none; }
  .cases-grid-section .case-card span { display: flex; inset: 0 0 auto; width: 100%; height: 156px; align-items: center; justify-content: center; padding: 16px; background: #102b3dcc; text-align: center; opacity: 0; transition: opacity .2s ease; }
  .cases-grid-section .case-card strong { display: -webkit-box; overflow: hidden; color: #fff; font-size: 14px; font-weight: 700; line-height: 1.65; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
  .cases-grid-section .case-card small { display: none; }
  .cases-grid-section .case-card:hover span,
  .cases-grid-section .case-card:focus-visible span { opacity: 1; }
  .cases-grid-section .case-card:hover img,
  .cases-grid-section .case-card:focus-visible img { transform: scale(1.035); }

  .advantages-band, .featured-section, .service-strip { display: none; }
  .news-section { order: 5; width: 1000px; margin: 0 auto; padding: 44px 0 70px; border-top: 1px solid #eee; background: #fff; }
  .news-section > .reference-heading, .mobile-news-list { display: none; }
  .desktop-news-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
  .desktop-news-columns section > header { display: flex; align-items: center; justify-content: space-between; padding-bottom: 8px; border-bottom: 3px solid #1595d1; }
  .desktop-news-columns header strong { color: #1595d1; font-size: 25px; }
  .desktop-news-columns header a { color: #999; font-size: 12px; text-decoration: none; }
  .desktop-news-columns h3 { margin: 14px 0 10px; color: #333; font-size: 18px; }
  .desktop-news-columns ul { margin: 0; padding: 0; list-style: none; }
  .desktop-news-columns li { display: flex; gap: 12px; padding: 9px 0; border-bottom: 1px dashed #d6d6d6; font-size: 13px; }
  .desktop-news-columns li > span { flex: 0 0 auto; color: #999; }
  .desktop-news-columns li > a { min-width: 0; overflow: hidden; color: #555; text-decoration: none; text-overflow: ellipsis; white-space: nowrap; }
  .desktop-news-columns li.is-open { display: block; }
  .desktop-news-columns li.is-open > a { display: block; color: #1595d1; font-weight: 700; }
  .desktop-news-columns li p { margin: 8px 0 0; color: #777; font-size: 12px; line-height: 1.8; }
  .desktop-news-columns li p span { color: #1595d1; }

  .footer { padding: 0 0 28px; border-top: 1px solid #e5e5e5; background: #fff; color: #666; text-align: left; }
  .desktop-footer-nav { display: flex; justify-content: center; gap: 0; margin-bottom: 26px; background: #1595d1; }
  .desktop-footer-nav a { padding: 14px 34px; color: #fff; font-size: 14px; text-decoration: none; }
  .footer-inner { display: flex; align-items: center; gap: 42px; width: 1000px; margin: 0 auto; }
  .desktop-footer-logo { display: block; width: 150px; height: 105px; object-fit: contain; }
  .footer-inner strong { color: #333; font-size: 17px; }
  .footer-inner p { margin: 7px 0; color: #666; font-size: 12px; }
  .footer-inner a { color: #555; }
  .mobile-footer-copy { display: none; }

  .page-hero { padding: 38px max(24px, calc((100% - 1000px) / 2)); background: #f4f4f4; }
  .page-hero h1 { color: #1595d1; font-size: 30px; }
  .list-section, .detail-page, .about-page { max-width: 1000px; }
  .list-section .category-filter { justify-content: center; gap: 0; padding-bottom: 18px; border-bottom: 1px solid #ddd; }
  .list-section .category-filter a { padding: 10px 20px; border: 0; border-radius: 0; background: #fff; color: #555; }
  .list-section .category-filter a.active { background: #1595d1; color: #fff; }
  .listing-grid { grid-template-columns: repeat(3, 1fr); gap: 30px 35px; }
  .listing-card { border-radius: 0; box-shadow: none; }
  .detail-article { max-width: 900px; }
  .contact-bar,
  .detail-cta { display: none; }

  .desktop-inner-carousel { position: relative; display: block; width: 100%; height: 578px; overflow: hidden; background: #eef0f1; }
  .desktop-inner-carousel .hero-slides,
  .desktop-inner-carousel .hero-slide,
  .desktop-inner-carousel picture { display: block; width: 100%; height: 100%; }
  .desktop-inner-carousel .hero-slide { position: absolute; inset: 0; }
  .desktop-inner-carousel img { width: 100%; height: 100%; object-fit: cover; }

  .desktop-inner-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 750px);
    align-items: start;
    gap: 30px;
    width: 1000px;
    margin: 42px auto 70px;
  }
  .desktop-sidebar { display: block; }
  .desktop-sidebar section { margin-bottom: 20px; border: 1px solid #ddd; background: #fff; }
  .desktop-sidebar h2 { margin: 0; padding: 14px 17px; background: #1595d1; color: #fff; font-size: 18px; font-weight: 400; }
  .desktop-sidebar nav { display: block; }
  .desktop-sidebar nav a { display: block; padding: 12px 17px; border-bottom: 1px solid #e5e5e5; color: #555; font-size: 14px; text-decoration: none; }
  .desktop-sidebar nav a::before { content: ">"; margin-right: 9px; color: #1595d1; }
  .desktop-sidebar nav a:hover { background: #f2f9fc; color: #1595d1; }
  .desktop-sidebar nav a.active { border-left: 3px solid #1595d1; background: #eaf7fc; color: #078ecb; font-weight: 700; }
  .desktop-side-contact { padding-bottom: 14px; }
  .desktop-side-contact p { margin: 10px 14px; color: #666; font-size: 12px; line-height: 1.65; }
  .desktop-side-contact > a { display: none; }
  .desktop-inner-main { min-width: 0; }
  .desktop-detail-breadcrumb { display: flex; align-items: center; gap: 8px; min-width: 0; padding: 0 0 14px; border-bottom: 2px solid #1595d1; color: #888; font-size: 13px; }
  .desktop-detail-breadcrumb a { flex: 0 0 auto; color: #1595d1; text-decoration: none; }
  .desktop-detail-breadcrumb strong { min-width: 0; overflow: hidden; color: #555; font-weight: 400; text-overflow: ellipsis; white-space: nowrap; }
  .desktop-inner-main .page-hero { padding: 0 0 13px; border-bottom: 2px solid #1595d1; background: #fff; }
  .desktop-inner-main .page-hero > span { display: none; }
  .desktop-inner-main .page-hero h1 { margin: 0; color: #333; font-size: 20px; }
  .desktop-inner-main .page-hero p { display: none; }
  .desktop-inner-main .list-section { min-height: 520px; padding: 24px 0 0; }
  .desktop-inner-main .listing-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px 18px; }
  .desktop-inner-main .listing-card img { height: 150px; object-fit: contain; }
  .desktop-inner-main .article-list > a { padding: 14px 4px; }
  .desktop-inner-main .about-page { grid-template-columns: 1fr; margin: 0; padding: 28px 0; background: #fff; color: #333; }
  .desktop-inner-main .about-page .about-visual { display: none; }
  .desktop-inner-main .about-page .eyebrow { display: none; }
  .desktop-inner-main .about-page p { color: #666; }
  .desktop-inner-main .about-advantages { display: none; }
  .desktop-inner-main .detail-page { width: auto; max-width: none; margin: 0; }
  .desktop-inner-main .detail-cover { padding: 28px 0 0; }
  .desktop-inner-main .detail-article { padding-right: 0; padding-left: 0; }
  .desktop-inner-main .detail-cta { margin-right: 0; margin-left: 0; }
  .desktop-related-products { display: block; margin: 10px 0 20px; padding-top: 20px; border-top: 1px solid #ddd; }
  .desktop-related-products header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
  .desktop-related-products h2 { margin: 0; color: #333; font-size: 20px; font-weight: 500; }
  .desktop-related-products header > a { color: #888; font-size: 12px; text-decoration: none; }
  .desktop-related-products > div { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
  .desktop-related-products > div > a { min-width: 0; color: #444; text-decoration: none; }
  .desktop-related-products img { display: block; width: 100%; height: 125px; border: 1px solid #eee; object-fit: contain; background: #fff; }
  .desktop-related-products strong { display: block; margin-top: 9px; overflow: hidden; font-size: 13px; font-weight: 400; text-align: center; text-overflow: ellipsis; white-space: nowrap; }
  .contact-page { min-height: 430px; padding: 32px 10px; }
  .contact-page h2 { margin: 0 0 25px; color: #1595d1; font-size: 23px; }
  .contact-page dl { margin: 0; }
  .contact-page dl div { display: grid; grid-template-columns: 95px 1fr; padding: 13px 0; border-bottom: 1px dashed #ddd; }
  .contact-page dt { color: #777; }
  .contact-page dd { margin: 0; color: #333; }
  .contact-page dd a { color: #1595d1; text-decoration: none; }
  .desktop-contact-label { display: inline; }
  .mobile-contact-label,
  .contact-page dl .contact-landline { display: none; }
  .contact-primary { display: inline-block; margin-top: 26px; padding: 11px 25px; background: #1595d1; color: #fff; text-decoration: none; }
}

@media (max-width: 899px) {
  .desktop-welcome, .desktop-original-logo, .desktop-nav-contact,
  .desktop-footer-nav, .desktop-footer-logo, .desktop-hot-products,
  .desktop-news-columns, .desktop-why { display: none; }
  .footer-inner { display: none; }
  .mobile-footer-copy { display: block; }
  .footer { padding: 28px 18px 82px; border-top: 1px solid #e5e5e5; background: #fff; color: #666; }
  .footer strong { color: #333; }
  .footer a { color: var(--red); }
  .mobile-footer-copy p { margin: 8px 0; line-height: 1.7; }
  .desktop-inner-carousel, .desktop-sidebar { display: none; }
  .desktop-inner-layout, .desktop-inner-main { display: contents; }
  .list-main .page-hero { padding: 22px 18px 18px; border-bottom: 1px solid var(--line); background: #fff; color: var(--ink); }
  .list-main .page-hero > span, .list-main .page-hero > p { display: none; }
  .list-main .page-hero h1 { margin: 0; color: var(--ink); font-size: 20px; }
  .list-main .list-section { padding-top: 22px; }
  .contact-page { padding: 32px 22px 60px; }
  .contact-page h2 { font-size: 21px; }
  .contact-page dl div { padding: 12px 0; }
  .contact-page dt { color: #777; font-size: 12px; }
  .contact-page dd { margin: 4px 0 0; font-size: 14px; }
  .contact-page dd a { color: var(--red); }
  .contact-primary { display: inline-block; margin-top: 22px; padding: 11px 20px; background: var(--red); color: #fff; text-decoration: none; }
  .contact-bar { bottom: 0; width: min(100%, 720px); height: 50px; border-right: 0; border-bottom: 0; border-left: 0; }
  .contact-bar span { padding: 0 12px; }
  .contact-bar small { font-size: 9px; }
  .contact-bar strong { font-size: 14px; }
  .contact-bar a { min-width: 40%; font-size: 14px; }
}