/* 2026-09: shared layout refinements; color tokens remain in ui.css. */
:root { --space-section: clamp(56px, 5vw, 80px); --muted: var(--n-600); }
html { scroll-padding-top: 110px; scrollbar-gutter: stable; }
.section-title { margin-bottom: 32px; }
.section-title h2 { font-size: clamp(27px, 3vw, 42px); }
.section-title p { max-width: 720px; margin-inline: auto; }
.product-image { aspect-ratio: 3 / 2; background: var(--n-0); }
.product-image img { width: 100%; height: 100%; aspect-ratio: 3 / 2; object-fit: cover; mix-blend-mode: multiply; }
.product-caption { display: flex; flex-direction: column; height: auto; }
.product-caption p { font-size: 14px; line-height: 1.85; color: var(--ink-soft); }
.product-caption > .text-link { margin-top: 16px; font-size: 14px; font-weight: 700; letter-spacing: 0; color: var(--brand-strong); }
.category-tabs a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; }
.text-link { color: var(--brand-strong); font-weight: 700; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.hero-button, .light-button, .copy-wechat, .category-tab.is-active { background: var(--brand-strong); color: var(--n-0); }
.hero-button:hover, .light-button:hover, .copy-wechat:hover { background: var(--brand); }
.footer-bottom nav { display: flex; flex-wrap: wrap; gap: 24px; }
.rail-panel .rail-phone-number { display: inline-block; padding-block: 10px; }
.header-phone:focus-visible { outline-offset: 5px; }
.home-page .suction-hero { padding-block: 184px 64px; }
.home-page .suction-hero-layout { grid-template-columns: 1.05fr 1fr; gap: 5%; align-items: center; text-align: left; }
.home-page .suction-hero-copy h1 { font-size: clamp(34px, 3.65vw, 58px); margin: 14px 0 24px; }
.home-page .suction-hero-copy > p { max-width: 560px; }
.home-page .suction-hero-copy .hero-overline { font-size: 14px; color: var(--c-amber-2); letter-spacing: .09em; }
.home-page .suction-hero-actions { justify-content: flex-start; gap: 24px; }
.home-page .suction-keywords { grid-template-columns: repeat(2, 1fr); font-size: 13px; gap: 10px 16px; margin-top: 28px; padding-top: 18px; }
.home-page .solution-intro { background: var(--n-50); }
.home-page .suction-industry { background: var(--surface); align-items: flex-start; padding: 24px; }
.home-page .suction-industry p { font-size: 14px; line-height: 1.8; }
.industry-arrow { margin-left: auto; color: var(--brand); }
.home-page .about-band { color: var(--white); }
.home-page .home-support { padding-block: var(--space-section); }
.home-support-list h3 { margin: 0 0 8px; font-size: 20px; }
.sector-overview-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; padding-bottom: var(--space-section); }
.sector-overview-card { min-width: 0; border: 1px solid var(--line); background: var(--surface); scroll-margin-top: calc(var(--sector-index-height, 60px) + 16px); }
.sector-overview-body { padding: 24px; }
.sector-overview-body h2 { margin: 0 0 12px; font-size: 24px; }
.sector-overview-body > p { margin: 0 0 20px; color: var(--ink-soft); font-size: 14px; line-height: 1.85; min-height: 78px; }
.sector-focus-links { display: flex; flex-wrap: wrap; gap: 8px 14px; padding-top: 16px; margin-bottom: 20px; border-top: 1px solid var(--line); font-size: 13px; }
.sector-focus-links span { width: 100%; color: var(--muted); }
.sector-focus-links a { color: var(--brand-strong); text-decoration: underline; text-underline-offset: 3px; }
.sector-overview-body > .text-link { font-size: 14px; }
.sector-detail-content { max-width: 960px; margin-inline: auto; }
.sector-products--focused { grid-template-columns: 180px repeat(2, minmax(0, 1fr)) 160px; margin-top: 36px; }
.contact-page .detail-banner { padding-block: 160px 40px; min-height: 0; }
.contact-page .detail-banner-inner { padding-bottom: 0; }
.contact-page .detail-banner h1 { font-size: clamp(32px, 4vw, 52px); }
.contact-page-main { padding-block: 48px 64px; }
.contact-page .contact-layout { align-items: start; grid-template-columns: 1.2fr 1fr; gap: 40px; }
.contact-page .contact-info { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.contact-page .contact-info article { display: block; padding: 22px; min-width: 0; }
.contact-page .contact-info h2, .contact-page .contact-info h3 { margin: 8px 0; font-size: 19px; line-height: 1.5; overflow-wrap: anywhere; }
.contact-page .contact-info .card-heading-text { font-size: inherit; letter-spacing: 0; color: var(--ink); }
.contact-page .info-panel { padding: 28px; }
.contact-page .info-panel h2 { margin-top: 0; font-size: 25px; }
.contact-page .info-panel ul { padding-left: 20px; line-height: 1.9; }
.contact-page .info-panel li + li { margin-top: 14px; }
.contact-page .text-button { display: inline-flex; margin-top: 14px; color: var(--brand-strong); }
@media (max-width: 1100px) {
  .home-page .suction-hero-layout { gap: 28px; }
  .home-page .suction-hero-copy h1 { font-size: clamp(30px, 4vw, 44px); }
  .sector-overview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .sector-products--focused { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-page .contact-info { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  html { scrollbar-gutter: auto; }
  :root { --rail-lane: 0px; --container: calc(100% - 32px); --space-section: 48px; }
  body { padding-bottom: calc(58px + env(safe-area-inset-bottom)); }
  .page-width:not(.header-inner):not(.topbar-inner):not(.mobile-nav), .detail-layout, .related { margin-inline: auto; }
  .contact-rail { left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; padding-bottom: env(safe-area-inset-bottom); border-width: 1px 0 0; background: var(--surface-deep); }
  .contact-rail .rail-item { position: static; }
  .contact-rail .rail-button { width: 100%; min-height: 56px; flex-direction: row; gap: 10px; padding: 10px; }
  .contact-rail .rail-button span { font-size: 13px; }
  .contact-rail .rail-panel { left: 16px; right: auto; bottom: calc(100% + 8px); width: min(300px, calc(100vw - 32px)); max-height: calc(100dvh - 100px); overflow-y: auto; padding: 20px; }
  .rail-panel::before { display: none; }
  .home-page .suction-hero { padding-block: 118px 32px; }
  .home-page .suction-hero-layout { grid-template-columns: 1fr; gap: 28px; }
  .home-page .suction-hero-copy h1 { font-size: clamp(31px, 8.7vw, 44px); }
  .home-page .suction-hero-copy > p { font-size: 15px; }
  .home-page .suction-hero-actions { gap: 14px; margin-top: 22px; }
  .home-page .suction-keywords { margin-top: 22px; }
  .section-title { margin-bottom: 26px; }
  .section-title h2 { font-size: 28px; }
  .section-title p { font-size: 15px; }
  .product-image img { padding: 18px; }
  .sector-overview-grid { grid-template-columns: 1fr; }
  .sector-overview-body { padding: 22px; }
  .sector-overview-body > p { min-height: 0; }
  .sector-index nav { display: flex; flex-wrap: nowrap; overflow-x: auto; }
  .sector-index nav a { flex: 0 0 auto; min-height: 48px; padding-inline: 14px; }
  .sector-index-title { display: none; }
  .sector-intro { padding-block: 38px 28px; }
  .sector-products--focused { grid-template-columns: 1fr; }
  .contact-page .detail-banner { padding-block: 116px 26px; }
  .contact-page .detail-banner h1 { margin-block: 12px; font-size: 34px; }
  .contact-page .detail-banner p { font-size: 15px; }
  .contact-page-main { padding-block: 28px 40px; }
  .contact-page .contact-layout { grid-template-columns: 1fr; gap: 24px; }
  .contact-page .contact-info article { padding: 18px 20px; }
  .contact-page .info-panel { padding: 22px; }
  .footer-bottom { gap: 18px; }
}

/* Content hierarchy and compact, data-aware modules. */
:root { --space-section: clamp(44px, 4vw, 64px); }
.section-title, .section-title.centered, .section-heading { text-align: left; margin-bottom: 24px; }
.section-title h2, .section-heading h2, .sector-intro h2 { font-size: clamp(25px, 2.4vw, 34px); line-height: 1.35; }
.section-title h2::after, .detail-banner::after, .editorial-section::before { content: none; }
.section-title > p:last-child { max-width: 780px; margin-inline: 0; font-size: 16px; }
.section-heading > p:last-child { font-size: 16px; }
.section + .editorial-section { padding-top: 0; }
.product-caption h3, .home-page .suction-industry h3 { font-size: 20px; line-height: 1.5; }
.product-caption p { font-size: 15px; line-height: 1.8; margin-bottom: 0; }
.product-caption { padding: 20px; gap: 8px; }
.product-card { box-shadow: none; }
.product-card:hover { transform: none; }
.product-image { display: flex; align-items: center; justify-content: center; }
.product-image img { max-height: 230px; object-fit: contain; }
.product-page-main { padding-top: 32px; }
.category-tabs { justify-content: flex-start; margin-bottom: 28px; }
.catalog-grid { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.catalog-grid > .product-card:only-child { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(240px, .7fr) 1fr; align-items: stretch; }
.catalog-grid > .product-card:only-child .product-image { aspect-ratio: auto; min-height: 260px; }
.catalog-grid > .product-card:only-child .product-image img { max-height: 300px; max-width: 420px; }
.catalog-grid > .product-card:only-child .product-caption { border-top: 0; border-left: 1px solid var(--line); padding: clamp(24px, 3vw, 40px); justify-content: center; }
.catalog-grid .empty-state { grid-column: 1 / -1; }
.detail-layout { grid-template-columns: minmax(260px, .8fr) 1.2fr; align-items: start; gap: 40px; }
.detail-image { box-shadow: none; background: var(--n-0); }
.detail-image img { aspect-ratio: 3 / 2; object-fit: cover; max-height: 420px; }
.detail-copy .entry-content { font-size: 16px; line-height: 1.9; }
.detail-copy .entry-content h2, .detail-copy .entry-content h3 { font-size: 22px; }
.product-detail-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; margin-top: 24px; }
.related { background: none; }
.related-grid img { aspect-ratio: 3 / 2; object-fit: cover; max-height: 220px; background: var(--n-0); }
.sector-intro { padding-block: 36px 24px; align-items: start; }
.sector-intro h2 { margin: 0; }
.sector-overview-grid { gap: 16px; }
.sector-overview-body { padding: 24px; display: flex; flex-direction: column; height: 100%; }
.sector-overview-body h2 { font-size: 22px; }
.sector-overview-body > p { font-size: 15px; min-height: 0; flex-grow: 1; }
.sector-focus-links { padding-top: 14px; margin-bottom: 16px; }
.sector-focus-links span { width: auto; }
.home-page .suction-industry p { font-size: 15px; }
.home-company { background: var(--surface); }
.home-company-layout { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.home-company h2 { margin: 0 0 16px; font-size: clamp(25px, 2.4vw, 34px); }
.home-company p { max-width: 780px; margin: 0; color: var(--ink-soft); font-size: 16px; line-height: 1.9; }
.home-company-links { display: flex; flex-direction: column; gap: 20px; }
.service-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; list-style: none; counter-reset: service-step; padding: 0; margin: 0; }
.service-steps li { border-top: 2px solid var(--line); padding-top: 18px; counter-increment: service-step; }
.service-steps li::before { content: '0' counter(service-step); color: var(--brand-strong); font-size: 14px; font-weight: 700; }
.service-steps h3 { font-size: 20px; margin: 10px 0 8px; }
.service-steps p { color: var(--ink-soft); font-size: 15px; margin: 0; line-height: 1.8; }
.service-preparation .info-panel { box-shadow: none; padding: 24px; }
.service-preparation .info-panel::before { content: none; }
.site-cta { padding: 28px 32px; box-shadow: none; margin-block: 48px; }
.site-cta h2 { font-size: clamp(22px, 2vw, 28px); line-height: 1.4; }
.site-cta p { font-size: 15px; }
.site-footer { padding-block: 36px 24px; background: var(--surface-deep); }
.footer-top { padding-bottom: 22px; }
.footer-top > div { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; }
.footer-top p { margin: 0; font-size: 14px; }
.footer-brand .brand-logo { height: 32px; filter: brightness(0) invert(1); }
.footer-links { grid-template-columns: .8fr 1fr 1.5fr 1.3fr; gap: 28px; padding-block: 24px; }
.footer-links h3 { letter-spacing: 0; margin-bottom: 12px; }
.footer-industry-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 16px; }
.footer-industry-links a { margin: 0; }
.footer-links p { overflow-wrap: anywhere; }
.footer-bottom { flex-wrap: wrap; padding-top: 16px; }
@media (max-width: 900px) {
  .detail-layout { grid-template-columns: 1fr; gap: 28px; }
  .detail-image { max-width: 520px; width: 100%; }
  .home-company-layout { grid-template-columns: 1fr; gap: 24px; }
  .home-company-links { flex-direction: row; flex-wrap: wrap; }
  .service-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .section-title h2, .section-heading h2, .sector-intro h2 { font-size: 25px; }
  .section-title > p:last-child, .section-heading > p:last-child { font-size: 15px; }
  .product-page-main { padding-top: 24px; }
  .category-tabs { gap: 8px; margin-bottom: 24px; }
  .product-image { aspect-ratio: auto; height: 200px; }
  .product-image img { max-height: 200px; }
  .catalog-grid { grid-template-columns: 1fr; }
  .catalog-grid > .product-card:only-child { grid-template-columns: 1fr; }
  .catalog-grid > .product-card:only-child .product-image { min-height: 0; height: 220px; }
  .catalog-grid > .product-card:only-child .product-image img { max-height: 220px; }
  .catalog-grid > .product-card:only-child .product-caption { border-left: 0; border-top: 1px solid var(--line); padding: 20px; }
  .sector-intro { display: block; }
  .sector-intro p { margin-top: 12px; }
  .sector-overview-body { padding: 20px; }
  .site-cta { padding: 24px; margin-block: 36px; }
  .site-footer { padding-top: 28px; }
  .footer-links { gap: 24px; }
  .footer-industries { grid-column: 1 / -1; order: 4; }
  .footer-contact { grid-column: 1 / -1; order: 3; }
  .footer-industry-links { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px 12px; }
  .footer-industry-links a { padding-block: 8px; font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { body { padding-bottom: 0; } .contact-rail { display: none; } }

/* Text-only banners: keep the page heading distinct from product imagery. */
.detail-banner, .solutions-redesign .sector-hero,
.sector-hero { background: var(--surface-deep); }
.home-page .suction-hero::before { content: none; }
.home-page .suction-hero { padding-block: 164px 56px; }
.home-page .suction-hero-layout { grid-template-columns: minmax(0, 1fr); }
.home-page .suction-hero-copy { max-width: 880px; }
.home-page .suction-keywords { display: flex; flex-wrap: wrap; gap: 12px 32px; }
.detail-banner, .inner-page .detail-banner { min-height: 0; padding-block: 160px 40px; }
.detail-banner-inner, .inner-page .detail-banner-inner { padding-block: 0; }
.detail-banner h1 { font-size: clamp(32px, 3.3vw, 48px); }
.detail-banner > .page-width > p:last-child { max-width: 860px; font-size: 16px; line-height: 1.8; }
.sector-hero .breadcrumb { margin-bottom: 20px; }
.sector-hero-grid, .sector-hero-grid.no-visual { padding-block: 0 40px; }
.sector-hero-copy h1 { font-size: clamp(32px, 3.3vw, 48px); }
@media (max-width: 720px) {
  .home-page .suction-hero { padding-block: 118px 36px; }
  .detail-banner, .inner-page .detail-banner { padding-block: 116px 28px; }
  .detail-banner h1, .sector-hero-copy h1 { font-size: 32px; }
  .detail-banner > .page-width > p:last-child { font-size: 15px; }
  .sector-hero-grid, .sector-hero-grid.no-visual { padding-bottom: 28px; }
}

/* Homepage composition follows the Stack reference's centered hierarchy. */
.home-page .suction-hero { padding-block: 220px 96px; min-height: 820px; display: flex; align-items: center; }
.home-page .suction-hero > .page-width.suction-hero-layout { text-align: center; margin-inline: auto; }
.home-page .suction-hero-copy { width: 100%; max-width: 1120px; margin-inline: auto; }
.home-page .suction-hero-copy .hero-overline { font-size: 19px; letter-spacing: .08em; color: var(--n-300); margin-inline: auto; }
.home-page .suction-hero-copy h1 { font-size: clamp(36px, 4.1vw, 60px); line-height: 1.35; margin: 26px 0 22px; letter-spacing: -.02em; }
.home-page .suction-hero-copy h1 span { display: inline-block; color: var(--c-amber-2); background: none; -webkit-text-fill-color: currentColor; }
.home-page .suction-hero-copy > p { max-width: 720px; margin-inline: auto; }
.home-page .suction-hero-actions { justify-content: center; margin-top: 30px; }
.home-page .suction-keywords { justify-content: center; width: fit-content; max-width: 100%; margin: 32px auto 0; padding: 20px 0 0; gap: 12px 28px; }
@media (max-width: 720px) {
  .home-page .suction-hero { min-height: 0; padding-block: 138px 48px; }
  .home-page .suction-hero-copy .hero-overline { font-size: 15px; }
  .home-page .suction-hero-copy h1 { font-size: clamp(30px, 8vw, 40px); margin-block: 22px 20px; }
  .home-page .suction-hero-copy h1 span { display: block; }
  .home-page .suction-hero-copy > p { font-size: 14px; line-height: 1.9; }
  .home-page .suction-hero-actions { gap: 16px; margin-top: 26px; }
  .home-page .suction-keywords { display: grid; grid-template-columns: repeat(2, max-content); text-align: left; gap: 12px 24px; margin-top: 26px; }
}

/* 首页质量流程条：箭头不套边框，直接用主题色字形 */
.quality-steps .qa { padding: 0 2px; border: 0; background: none; color: var(--c-amber); font-weight: 700; }

/* 产品分类页 industry-block 图片：白底纯产品图 */
.industry-block > img { background: var(--n-0); }

/* 联系页右侧公司实拍：满铺整个侧栏 */
.contact-page .contact-visual { padding: 0; overflow: hidden; border: 1px solid var(--line); }
.contact-page .contact-photo { display: block; width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; }

/* 资讯详情：banner 只放栏目名，文章标题与时间移入正文头部 */
.detail-banner .banner-title { margin: 0; font-size: clamp(32px, 3.3vw, 48px); line-height: 1.22; }
.article-detail .article-head { margin-bottom: 28px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.article-detail .article-head h1 { margin: 0 0 14px; font-size: clamp(26px, 2.6vw, 36px); line-height: 1.3; }
.article-detail .article-head .article-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--muted); font-size: 13.5px; }