:root {
  --blue: #064a99;
  --deep-blue: #002b59;
  --ink: #202b38;
  --muted: #7e8997;
  --line: #e7edf3;
  --page-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); font-family: Arial, "Microsoft YaHei", sans-serif; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin-top: 0; }
img { max-width: 100%; height: auto; display: block; }

.section { max-width: var(--page-width); margin: 0 auto; padding: 100px 28px; }
.section-kicker { margin-bottom: 8px; color: #7391aa; font-size: 11px; font-weight: 700; letter-spacing: .16em; }
.section-heading { max-width: 680px; margin: 0 auto 45px; text-align: center; }
.section-heading h2, h2 { margin-bottom: 8px; font-size: 29px; line-height: 1.3; }
.section-heading > p:last-child { margin: 0; color: var(--muted); font-size: 13px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-width: 112px; padding: 9px 22px; border-radius: 999px; background: #0754ae; color: #fff; font-size: 12px; font-weight: 700; transition: transform .2s, background .2s; }
.button:hover { background: #003f89; transform: translateY(-2px); }

/* Header */
.site-header { position: absolute; z-index: 5; top: 28px; left: 50%; display: flex; align-items: stretch; width: min(1170px, calc(100% - 48px)); min-height: 74px; overflow: visible; border-radius: 4px; transform: translateX(-50%); background: #0750a1; color: #fff; box-shadow: 0 10px 26px rgba(0, 32, 72, .18); }
.brand { display: flex; align-items: center; gap: 9px; width: 246px; padding: 13px 23px; border-radius: 4px 0 0 4px; background: #fff; color: #1a2b35; line-height: 1.1; flex-shrink: 0; }
.brand-mark { display: grid; width: 32px; height: 32px; place-items: center; border-radius: 50% 50% 50% 0; background: linear-gradient(135deg, #0bba8e, #0755b4); color: #fff; font-size: 21px; transform: rotate(-30deg); }
.brand-logo { display: grid; width: 32px; height: 32px; place-items: center; flex-shrink: 0; overflow: hidden; border-radius: 4px; }
.brand-logo img { width: 100%; height: 100%; object-fit: contain; }
.brand-copy { display: block; min-width: 0; }
.brand strong { display: block; font-size: 17px; letter-spacing: .04em; }
.brand small { display: block; margin-top: 4px; color: #61717d; font-size: 8px; letter-spacing: .08em; }
.main-nav { display: flex; align-items: center; justify-content: center; flex: 1; gap: 36px; }
.main-nav a { position: relative; font-size: 12px; white-space: nowrap; }
.main-nav a::after { position: absolute; right: 0; bottom: -8px; left: 0; height: 2px; background: #fff; content: ''; transform: scaleX(0); transition: transform .2s; }
.main-nav a:hover::after, .main-nav .is-active::after { transform: scaleX(1); }
.header-phone { display: flex; flex-direction: column; justify-content: center; min-width: 165px; padding: 0 24px; background: #073b7c; font-size: 16px; font-weight: 700; line-height: 1.2; flex-shrink: 0; }
.header-phone span { margin-bottom: 4px; font-size: 10px; font-weight: 400; opacity: .8; }
.language-switch { position: relative; display: flex; align-items: stretch; min-width: 145px; border-radius: 0 4px 4px 0; background: #0750a1; flex-shrink: 0; }
.language-toggle { display: inline-flex; width: 100%; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: inherit; background: transparent; color: #fff; cursor: pointer; font: 12px Arial, "Microsoft YaHei", sans-serif; }
.language-flag { font-size: 18px; line-height: 1; }.language-arrow { margin-top: -3px; color: rgba(255,255,255,.72); font-size: 17px; transition: transform .2s; }.language-toggle[aria-expanded="true"] .language-arrow { transform: rotate(180deg); }
.language-menu { position: absolute; z-index: 10; top: calc(100% + 8px); right: 0; display: none; min-width: 170px; overflow: hidden; border-radius: 4px; background: #fff; box-shadow: 0 10px 24px rgba(0, 32, 72, .2); }
.language-menu.is-open { display: grid; }.language-menu button { display: flex; align-items: center; gap: 10px; padding: 12px 15px; border: 0; border-bottom: 1px solid #edf1f5; background: #fff; color: #40505e; cursor: pointer; font: 13px Arial, "Microsoft YaHei", sans-serif; text-align: left; }.language-menu button:last-child { border-bottom: 0; }.language-menu button:hover { background: #f1f6fb; color: #0750a1; }
.menu-toggle { display: none; }
.menu-toggle__bars { display: inline-grid; gap: 5px; }
.menu-toggle__bars span { display: block; width: 100%; height: 2px; border-radius: 999px; background: currentColor; }
.menu-toggle__close, .menu-toggle__close::before { position: absolute; top: 50%; left: 50%; width: 100%; height: 2px; border-radius: 999px; background: currentColor; content: ''; transform-origin: center; }
.menu-toggle__close { transform: translate(-50%, -50%) rotate(45deg); }
.menu-toggle__close::before { transform: translate(-50%, -50%) rotate(90deg); }

/* Inner page banner */
.page-banner { position: relative; display: flex; align-items: center; min-height: 280px; padding: 120px 28px 60px; color: #fff; background-size: cover; background-position: center; }
.page-banner::before { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(0, 35, 76, .75), rgba(0, 55, 104, .45)); content: ''; }
.page-banner > * { position: relative; z-index: 1; max-width: var(--page-width); margin: 0 auto; width: 100%; }
.page-banner h1 { margin: 0 0 12px; padding-left: 18px; border-left: 4px solid #fff; font-size: clamp(26px, 4vw, 38px); line-height: 1.3; }
.page-banner p { margin: 0; max-width: 560px; padding-left: 22px; font-size: 13px; line-height: 1.8; opacity: .92; }
.page-banner--wind { background-image: linear-gradient(105deg, rgba(0, 44, 82, .5), rgba(0, 83, 113, .3)), linear-gradient(135deg, #5a9fd4 0%, #3d7a5c 40%, #2a6b8a 70%, #1a4d6e 100%); min-height: 320px; }
.page-banner--water { background-image: linear-gradient(105deg, rgba(0, 35, 76, .7), rgba(2, 55, 104, .5)), linear-gradient(135deg, #1a5276, #2874a6, #1e6f5c); }
.page-banner--products { min-height: 320px; padding-top: 105px; padding-bottom: 38px; background-image: linear-gradient(105deg, rgba(0, 35, 76, .78), rgba(2, 55, 104, .48)), url('../images/products/banner.webp'); }
.page-banner--coast { background-image: linear-gradient(105deg, rgba(0, 30, 60, .65), rgba(0, 50, 90, .4)), linear-gradient(135deg, #1a3a5c, #2e6b8a, #4a90a4); min-height: 320px; }

/* Breadcrumb & sub-nav */
.page-meta { max-width: var(--page-width); margin: 0 auto; padding: 0 28px; }
.breadcrumb { padding: 14px 0; color: #9aa5b0; font-size: 12px; }
.breadcrumb a { color: #0754ae; }
.breadcrumb a:hover { text-decoration: underline; }
.sub-nav { display: flex; flex-wrap: wrap; gap: 0; background: #f0f3f6; }
.sub-nav a { flex: 1; min-width: 120px; padding: 14px 20px; text-align: center; font-size: 13px; color: #526271; transition: background .2s, color .2s; }
.sub-nav a.is-active { background: #084c9a; color: #fff; font-weight: 700; }
.sub-nav a:hover:not(.is-active) { background: #e4eaf0; }

/* Tab panels */
.tab-panels { max-width: var(--page-width); margin: 0 auto; padding: 60px 28px 80px; }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; }

/* About page */
.about-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 50px; align-items: center; }
.about-grid--top { align-items: start; }
.about-visual { display: grid; place-items: center; min-height: 360px; padding: 30px; background: linear-gradient(135deg, #e8f4fc, #d0eef9); border-radius: 4px; overflow: hidden; }
.about-visual--photo { padding: 0; background: #f6f9fc; place-items: start; min-height: 0; align-self: start; }
.about-visual--photo img { width: 100%; height: auto; object-fit: cover; display: block; border-radius: 4px; }
.green-city { width: min(100%, 380px); aspect-ratio: 1.1; border-radius: 50% 50% 45% 45%; background: radial-gradient(circle at 50% 30%, #efffff 0 8%, transparent 9%), radial-gradient(circle at 40% 55%, #c6f3ef 0 25%, #70c8c0 26% 50%, #0a9b80 51% 65%, #52a5d8 66% 100%); box-shadow: 0 18px 40px rgba(1, 24, 66, .2); position: relative; }
.green-city::after { position: absolute; width: 80%; height: 30%; bottom: 15%; left: 10%; background: linear-gradient(180deg, #3d8b6e, #2a6b52); border-radius: 50%; content: ''; opacity: .6; }
.about-copy h2 { font-size: 26px; margin-bottom: 6px; }
.about-copy .subtitle { color: #348f57; font-size: 13px; font-weight: 700; margin-bottom: 20px; }
.about-copy p { color: #697684; font-size: 13px; margin-bottom: 14px; }
.sustainability { margin-top: 70px; text-align: center; }
.sustainability h3 { font-size: 24px; margin-bottom: 16px; color: #526271; }
.sustainability > p { max-width: 720px; margin: 0 auto 40px; color: #7e8997; font-size: 13px; }
.sustain-gallery { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.sustain-item { aspect-ratio: 1.2; border-radius: 4px; background-size: cover; background-position: center; }
.sustain-item:nth-child(1) { background: linear-gradient(135deg, #f9d976, #f39c12); }
.sustain-item:nth-child(2) { background: linear-gradient(135deg, #bdc3c7, #7f8c8d); }
.sustain-item:nth-child(3) { background: linear-gradient(135deg, #3498db, #2980b9); }
.sustain-item:nth-child(4) { background: linear-gradient(135deg, #2ecc71, #27ae60); }
.sustain-item:nth-child(5) { background: linear-gradient(135deg, #85c1e9, #5dade2); }

.culture-list { display: flex; flex-direction: column; gap: 20px; }
.culture-item { padding-bottom: 20px; border-bottom: 1px solid #eef2f6; }
.culture-item:last-child { padding-bottom: 0; border-bottom: 0; }
.culture-item h3 { margin: 0 0 8px; color: #084c9a; font-size: 16px; }
.culture-item p { margin: 0; color: #697684; font-size: 13px; line-height: 1.75; }

.timeline { position: relative; padding-left: 30px; }
.timeline::before { position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: #e0e6ed; content: ''; }
.timeline-item { position: relative; margin-bottom: 36px; padding-left: 24px; }
.timeline-item::before { position: absolute; left: -26px; top: 6px; width: 12px; height: 12px; border: 3px solid #0754ae; border-radius: 50%; background: #fff; content: ''; }
.timeline-item time { display: block; margin-bottom: 6px; color: #0754ae; font-size: 14px; font-weight: 700; }
.timeline-item h3 { font-size: 16px; margin-bottom: 8px; }
.timeline-item p { margin: 0; color: #697684; font-size: 13px; }

/* Products page */
.product-list-page { max-width: var(--page-width); margin: 0 auto; padding: 50px 28px 80px; }
.product-list-page--no-subnav { padding-top: 10px; }
.product-list-page--no-subnav .product-list-header { margin-bottom: 26px; }
.news-list-page { max-width: var(--page-width); margin: 0 auto; padding: 50px 28px 80px; }
.product-list-header { margin-bottom: 36px; }
.product-list-header h2 { font-size: 26px; margin-bottom: 8px; }
.product-list-header p { margin: 0; color: var(--muted); font-size: 13px; }
.product-list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-list-grid--compact { grid-template-columns: repeat(3, 1fr); }
.product-list-empty { grid-column: 1 / -1; color: var(--muted); text-align: center; padding: 40px 0; }
.product-card { display: flex; flex-direction: column; overflow: hidden; border-radius: 4px; background: #fff; box-shadow: 0 2px 12px rgba(0, 32, 72, .08); transition: transform .2s, box-shadow .2s; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0, 32, 72, .14); }
.product-card-image { aspect-ratio: 1.4; background-size: cover; background-position: center; overflow: hidden; }
.product-card-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-card-image--placeholder { width: 100%; height: 100%; background: linear-gradient(135deg, #1a5276, #2874a6, #1e6f5c); }
.product-card-meta { margin: 0 0 8px; color: #0754ae; font-size: 11px; font-weight: 700; }
.product-card-body { display: flex; flex-direction: column; flex: 1; padding: 20px; }
.product-card-body h3 { margin: 0 0 8px; font-size: 15px; line-height: 1.4; }
.product-card-body p { flex: 1; margin: 0 0 14px; color: var(--muted); font-size: 12px; line-height: 1.65; }
.product-card-link { color: #0754ae; font-size: 12px; font-weight: 700; }

.product-detail-page { max-width: var(--page-width); margin: 0 auto; padding: 40px 28px 80px; }
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; margin-bottom: 50px; }
.product-detail-media { display: flex; flex-direction: column; gap: 16px; }
.product-image { aspect-ratio: 1.1; border-radius: 4px; overflow: hidden; background: #f6f9fc; }
.product-image img { width: 100%; height: 100%; object-fit: contain; display: block; background: #fff; }
.product-image--placeholder { width: 100%; height: 100%; background: linear-gradient(135deg, #1a5276, #2874a6, #1e6f5c); }
.product-series-label { margin: 0; text-align: center; color: #526271; font-size: 14px; font-weight: 700; }
.product-detail-specs {
  padding: 32px 36px;
  border: 1px solid #e8eef3;
  border-radius: 6px;
  background: #fff;
  color: #1f2933;
  box-shadow: 0 2px 16px rgba(0, 32, 72, .06);
}
.product-detail-specs h1 {
  font-size: 24px;
  margin-bottom: 12px;
  color: #1f2933;
  line-height: 1.45;
}
.product-detail-specs .product-category-tag {
  background: #f0f3f6;
  color: #526271;
}
.product-detail-specs .product-summary {
  color: #697684;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid #eef2f6;
}
.product-spec-row { margin-bottom: 18px; }
.product-spec-label {
  display: block;
  margin-bottom: 6px;
  color: #0754ae;
  font-size: 13px;
  font-weight: 700;
}
.product-spec-row p { margin: 0; color: #3d4f5f; font-size: 14px; line-height: 1.75; }
.product-spec-block {
  margin-bottom: 22px;
  padding-top: 4px;
}
.product-spec-block h2 {
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #eef2f6;
  color: #1f2933;
  font-size: 16px;
  font-weight: 700;
}
.product-config-list, .product-feature-list {
  margin: 0;
  padding-left: 18px;
  color: #3d4f5f;
}
.product-config-list li, .product-feature-list li {
  margin-bottom: 10px;
  font-size: 13px;
  line-height: 1.75;
}
.product-config-list li::marker, .product-feature-list li::marker {
  color: #0754ae;
}
.product-detail-specs .button {
  margin-top: 12px;
}

.exhibition-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 10px;
}
.exhibition-gallery__item {
  aspect-ratio: 1;
  border-radius: 4px;
  overflow: hidden;
  background: #f6f9fc;
  border: 1px solid #e8eef3;
}
.exhibition-gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.exhibition-scenarios {
  margin-bottom: 50px;
  padding: 36px 40px;
  border: 1px solid #e8eef3;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 2px 16px rgba(0, 32, 72, .06);
}
.exhibition-scenarios__header {
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid #eef2f6;
}
.exhibition-scenarios__header h2 {
  position: relative;
  margin: 0;
  padding-left: 14px;
  color: #1f2933;
  font-size: 20px;
  font-weight: 700;
}
.exhibition-scenarios__header h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  border-radius: 2px;
  background: #0754ae;
}

.richtext-content {
  color: #3d4f5f;
  font-size: 14px;
  line-height: 1.85;
}
.richtext-content h1,
.richtext-content h2,
.richtext-content h3 {
  break-inside: avoid;
  margin: 0 0 12px;
  padding: 8px 12px;
  border-radius: 4px;
  background: #f0f5fa;
  border-left: 3px solid #0754ae;
  color: #14406e;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}
.richtext-content > *:not(:first-child) h1,
.richtext-content h1:not(:first-child),
.richtext-content h2:not(:first-child),
.richtext-content h3:not(:first-child) {
  margin-top: 22px;
}
.richtext-content h4,
.richtext-content h5 {
  margin: 16px 0 8px;
  color: #1f2933;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}
.richtext-content p { margin: 0 0 10px; }
.richtext-content ul,
.richtext-content ol {
  margin: 0 0 14px;
  padding-left: 20px;
}
.richtext-content li {
  margin-bottom: 6px;
  break-inside: avoid;
}
.richtext-content li::marker { color: #0754ae; }
.richtext-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}
.richtext-content a { color: #0754ae; }

@media (min-width: 992px) {
  .richtext-content--columns {
    column-count: 2;
    column-gap: 48px;
    column-rule: 1px solid #eef2f6;
  }
  .richtext-content--columns > * {
    break-inside: avoid;
  }
}

/* 展会全屏按钮 */
.exhibition-fullscreen {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid #d7e0e8;
  border-radius: 999px;
  background: #fff;
  color: #14406e;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, color .2s, transform .15s;
}
.exhibition-fullscreen:hover {
  background: #084c9a;
  border-color: #084c9a;
  color: #fff;
}
.exhibition-fullscreen:active {
  transform: scale(.96);
}
.exhibition-fullscreen__icon {
  font-size: 16px;
  line-height: 1;
}

.product-list-header--with-action {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.product-list-header--with-action > div > p { margin: 0; }

.page-meta--with-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* 全屏状态下隐藏导航/页脚，页面内容占满屏幕 */
body.exhibition-fullscreen-active .site-header,
body.exhibition-fullscreen-active .site-footer,
body.exhibition-fullscreen-active .back-top {
  display: none !important;
}

/* 竖屏大屏（如 1080x1920）自适应 */
@media (min-width: 992px) and (orientation: portrait) {
  .product-list-grid { grid-template-columns: repeat(2, 1fr); }
  .product-detail { grid-template-columns: 1fr; gap: 32px; }
  .richtext-content--columns { column-count: 1; }
  .exhibition-qr { right: 20px; }
}

/* 展会产品媒体轮播 */
.exhibition-carousel {
  position: relative;
}
.exhibition-carousel__viewport {
  border-radius: 6px;
  overflow: hidden;
  background: #f6f9fc;
  border: 1px solid #e8eef3;
}
.exhibition-carousel__slide {
  display: none;
  aspect-ratio: 1.1;
}
.exhibition-carousel__slide.is-active {
  display: block;
}
.exhibition-carousel__slide img,
.exhibition-carousel__slide video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #fff;
}
.exhibition-carousel__slide video {
  background: #0f172a;
}
.exhibition-carousel__slide .product-image--placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1a5276, #2874a6, #1e6f5c);
}
.exhibition-carousel__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(8, 42, 82, .55);
  color: #fff;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  transition: background .2s;
}
.exhibition-carousel__nav:hover { background: #084c9a; }
.exhibition-carousel__nav--prev { left: 10px; }
.exhibition-carousel__nav--next { right: 10px; }
.exhibition-carousel__nav[hidden] { display: none !important; }
.exhibition-carousel__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
}
.exhibition-carousel__dots:empty { display: none; }
.exhibition-carousel__dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: #c9d6e2;
  cursor: pointer;
  transition: background .2s, transform .2s;
}
.exhibition-carousel__dot.is-active {
  background: #084c9a;
  transform: scale(1.25);
}

/* 展会产品详情弹窗 */
.exhibition-modal[hidden] { display: none !important; }
.exhibition-modal {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.exhibition-modal__mask {
  position: absolute;
  inset: 0;
  background: rgba(12, 28, 48, .58);
  cursor: pointer;
}
.exhibition-modal__dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 960px);
  max-height: calc(100vh - 60px);
  overflow-y: auto;
  border-radius: 12px;
  background: #f6f9fc;
  box-shadow: 0 18px 48px rgba(0, 20, 50, .28);
}
.exhibition-modal__close {
  position: sticky;
  top: 12px;
  float: right;
  margin: 12px 12px 0 0;
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 50%;
  background: rgba(8, 42, 82, .78);
  color: #fff;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  z-index: 2;
  transition: background .2s;
}
.exhibition-modal__close:hover { background: #084c9a; }
.exhibition-modal__body {
  padding: 28px 32px 32px;
}
.exhibition-modal-detail .product-detail {
  margin-bottom: 32px;
  align-items: start;
}
.exhibition-modal-detail .product-detail-media {
  height: 400px;
  display: flex;
  flex-direction: column;
}
.exhibition-modal-detail .exhibition-carousel {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}
.exhibition-modal-detail .exhibition-carousel__viewport {
  flex: 1;
  min-height: 0;
  display: flex;
}
.exhibition-modal-detail .exhibition-carousel__slide.is-active {
  flex: 1;
  aspect-ratio: auto;
  min-height: 0;
}
.exhibition-modal-detail .product-detail-specs {
  height: 400px;
  box-sizing: border-box;
  overflow-y: auto;
}
.exhibition-modal-detail .exhibition-scenarios {
  margin-bottom: 0;
}
.exhibition-modal-detail__title {
  margin: 0 0 12px;
  color: #1f2933;
  font-size: 24px;
  line-height: 1.45;
}

body.exhibition-modal-open { overflow: hidden; }

@media (max-width: 767.98px) {
  .exhibition-modal { padding: 12px; }
  .exhibition-modal__dialog { max-height: calc(100vh - 24px); }
  .exhibition-modal__body { padding: 20px 16px 24px; }
  .exhibition-modal-detail .product-detail { grid-template-columns: 1fr; gap: 24px; }
  .exhibition-modal-detail .product-detail-media { height: 320px; }
  .exhibition-modal-detail .product-detail-specs { height: auto; max-height: none; overflow: visible; }
}

/* 展会 PC 悬浮二维码 */
.exhibition-qr[hidden] { display: none !important; }
.exhibition-qr {
  display: none;
  position: fixed;
  right: 28px;
  top: 50%;
  z-index: 40;
  transform: translateY(-50%);
}
.exhibition-qr__card {
  width: 148px;
  padding: 14px 12px 12px;
  border: 1px solid #e8eef3;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(0, 32, 72, .14);
  text-align: center;
}
.exhibition-qr__code {
  width: 120px;
  height: 120px;
  margin: 0 auto 10px;
}
.exhibition-qr__code img,
.exhibition-qr__code canvas {
  display: block;
  width: 120px !important;
  height: 120px !important;
  margin: 0 auto;
}
.exhibition-qr__text {
  margin: 0;
  color: #14406e;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
}

@media (min-width: 992px) {
  .exhibition-qr { display: block; }
}

/* 展会移动端客资门禁 */
.exhibition-lead-gate[hidden] { display: none !important; }
.exhibition-lead-gate {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.exhibition-lead-gate__mask {
  position: absolute;
  inset: 0;
  background: rgba(12, 28, 48, .58);
}
.exhibition-lead-gate__dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 420px);
  max-height: calc(100vh - 40px);
  overflow: auto;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(0, 20, 50, .28);
}
.exhibition-lead-gate__panel {
  padding: 28px 24px 24px;
}
.exhibition-lead-gate__panel[hidden] { display: none !important; }
.exhibition-lead-gate__panel h2 {
  margin: 0 0 8px;
  color: #1f2933;
  font-size: 20px;
  text-align: center;
}
.exhibition-lead-gate__hint,
.exhibition-lead-gate__result-message {
  margin: 0 0 20px;
  color: #697684;
  font-size: 13px;
  line-height: 1.6;
  text-align: center;
}
.exhibition-lead-field {
  margin-bottom: 14px;
}
.exhibition-lead-field label {
  display: block;
  margin-bottom: 6px;
  color: #14406e;
  font-size: 13px;
  font-weight: 700;
}
.exhibition-lead-field input,
.exhibition-lead-field textarea {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid #d7e0e8;
  border-radius: 6px;
  color: #1f2933;
  font: inherit;
  font-size: 14px;
  background: #f8fafc;
  box-sizing: border-box;
}
.exhibition-lead-field textarea {
  resize: vertical;
  min-height: 96px;
}
.exhibition-lead-field input:focus,
.exhibition-lead-field textarea:focus {
  outline: none;
  border-color: #0754ae;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(7, 84, 174, .12);
}
.exhibition-lead-field__error {
  min-height: 16px;
  margin-top: 4px;
  color: #c0392b;
  font-size: 12px;
}
.exhibition-lead-gate__form-error {
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 6px;
  background: #fff1f0;
  color: #c0392b;
  font-size: 13px;
}
.exhibition-lead-gate__form-error[hidden] { display: none !important; }
.exhibition-lead-gate__submit,
.exhibition-lead-gate__panel .button {
  display: block;
  width: 100%;
  margin-top: 8px;
  text-align: center;
}
.exhibition-lead-gate__submit:disabled {
  opacity: .65;
  cursor: not-allowed;
}
.exhibition-lead-gate__result-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: #e8f6ef;
  color: #1e7a4d;
  font-size: 28px;
  font-weight: 700;
  line-height: 56px;
  text-align: center;
}

body.exhibition-lead-open {
  overflow: hidden;
}

.product-copy h1 { font-size: 28px; margin-bottom: 12px; }
.product-category-tag { display: inline-block; margin-bottom: 10px; padding: 4px 12px; border-radius: 999px; background: #e8f0f8; color: #0754ae; font-size: 11px; font-weight: 700; }
.product-summary { color: #697684; font-size: 14px; margin-bottom: 20px; }
.related-products h2 { font-size: 20px; margin-bottom: 24px; }

/* Contact page */
.contact-page { max-width: var(--page-width); margin: 0 auto; padding: 40px 28px 80px; }
.contact-inquiry { margin-bottom: 56px; }
.contact-inquiry__title { margin: 0 0 8px; font-size: 22px; color: var(--ink); }
.contact-inquiry__desc { margin: 0 0 28px; color: #697684; font-size: 14px; }
.contact-form { margin-bottom: 0; }
.contact-channels { margin-bottom: 56px; padding-top: 48px; border-top: 1px solid var(--line); }
.contact-channels__title { margin: 0 0 28px; font-size: 22px; color: var(--ink); }
.contact-channels__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.contact-channel { display: flex; gap: 20px; padding: 24px; border-radius: 8px; background: #f6f9fc; }
.contact-channel__icon-wrap { flex-shrink: 0; display: flex; align-items: center; justify-content: center; width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(145deg, #064a98, #0a6fd4); box-shadow: 0 6px 16px rgba(7, 84, 174, .22); }
.contact-channel--whatsapp .contact-channel__icon-wrap { background: linear-gradient(145deg, #1aad4f, #25d366); box-shadow: 0 6px 16px rgba(37, 211, 102, .28); }
.contact-channel__icon { width: 48px; height: 48px; object-fit: contain; }
.contact-channel__body { flex: 1; min-width: 0; }
.contact-channel__label { display: block; margin-bottom: 8px; font-size: 16px; color: var(--ink); }
.contact-channel__value { margin: 0 0 12px; color: #526271; font-size: 14px; line-height: 1.7; }
.contact-channel__action { display: inline-flex; align-items: center; padding: 8px 16px; border-radius: 4px; background: #e8f0f8; color: #0754ae; font-size: 13px; font-weight: 700; transition: background .2s; }
.contact-channel__action:hover { background: #d4e4f4; }
.contact-channel__action--whatsapp { background: #25d366; color: #fff; }
.contact-channel__action--whatsapp:hover { background: #1ebe57; }
.form-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 13px; font-weight: 700; color: #526271; }
.form-group label .required { color: #e74c3c; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 16px; border: 0; border-radius: 4px; background: #f0f3f6; font-size: 13px; font-family: inherit; color: var(--ink); }
.form-group input::placeholder, .form-group textarea::placeholder { color: #b0bac3; }
.form-group textarea { min-height: 140px; resize: vertical; }
.form-group--full { margin-bottom: 20px; }
.contact-form .button { margin-top: 10px; border: 0; cursor: pointer; }
.privacy-consent { margin: 6px 0 16px; color: #526271; font-size: 13px; line-height: 1.6; }
.privacy-consent label { display: flex; align-items: flex-start; gap: 8px; cursor: pointer; }
.privacy-consent input { flex: 0 0 auto; width: 16px; height: 16px; margin: 3px 0 0; accent-color: #0754ae; }
.privacy-consent a { color: #0754ae; text-decoration: underline; text-underline-offset: 2px; }
.privacy-consent .field-error { display: block; margin: 4px 0 0 24px; }
.form-messages { list-style: none; margin: 0 0 24px; padding: 0; }
.form-messages:empty { display: none; margin: 0; }
.form-message { padding: 12px 16px; border-radius: 4px; font-size: 13px; margin-bottom: 8px; }
.form-message--success { background: #e8f8ef; color: #1e7e45; }
.form-message--error { background: #fdecea; color: #c0392b; }
.field-error { display: block; margin-top: 6px; font-size: 12px; color: #e74c3c; }
body.modal-open { overflow: hidden; }
.contact-modal { position: fixed; inset: 0; z-index: 1200; display: flex; align-items: center; justify-content: center; padding: 24px; opacity: 0; visibility: hidden; transition: opacity .25s ease, visibility .25s ease; }
.contact-modal.is-open { opacity: 1; visibility: visible; }
.contact-modal__backdrop { position: absolute; inset: 0; background: rgba(15, 32, 52, .45); }
.contact-modal__panel { position: relative; width: min(100%, 420px); padding: 36px 32px 28px; border-radius: 12px; background: #fff; box-shadow: 0 18px 48px rgba(15, 32, 52, .18); text-align: center; transform: translateY(16px) scale(.98); transition: transform .25s ease; }
.contact-modal.is-open .contact-modal__panel { transform: translateY(0) scale(1); }
.contact-modal__icon { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 50%; background: #e8f8ef; color: #1e7e45; font-size: 28px; font-weight: 700; line-height: 1; }
.contact-modal__title { margin: 0 0 12px; font-size: 20px; color: var(--ink); }
.contact-modal__text { margin: 0 0 24px; color: #526271; font-size: 14px; line-height: 1.8; }
.contact-modal__btn { min-width: 140px; border: 0; cursor: pointer; }
.message-board h3 { margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--line); font-size: 16px; color: #526271; }
.message-item { padding: 20px 0; border-bottom: 1px solid var(--line); }
.message-item:last-child { border-bottom: 0; }
.message-item__header { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 10px; }
.message-item__header strong { font-size: 14px; color: var(--ink); }
.message-item__header time { font-size: 12px; color: #9aa5b0; white-space: nowrap; }
.message-item p { margin: 0; color: #526271; font-size: 14px; line-height: 1.8; }
.message-empty { color: #b0bac3; font-size: 14px; text-align: center; padding: 40px 0; }

/* News detail */
.article-page { max-width: 800px; margin: 0 auto; padding: 40px 28px 80px; }
.article-page h1 { font-size: clamp(22px, 3.5vw, 28px); line-height: 1.4; margin-bottom: 12px; }
.article-meta { margin-bottom: 30px; color: #9aa5b0; font-size: 12px; }
.article-body p { color: #526271; font-size: 14px; line-height: 1.9; margin-bottom: 18px; text-align: justify; }
.article-actions { display: flex; justify-content: space-between; align-items: center; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
.article-actions .print-btn { padding: 8px 20px; background: #f0f3f6; border-radius: 4px; font-size: 12px; color: #526271; }
.article-actions .share-btn { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #526271; }
.article-next { margin-top: 30px; padding: 20px; background: #f6f9fc; border-radius: 4px; font-size: 13px; }
.article-next span { color: #9aa5b0; }
.article-next a { color: #0754ae; font-weight: 700; }
.article-next a:hover { text-decoration: underline; }

/* Home page */
.hero { position: relative; display: grid; min-height: 690px; place-items: center; overflow: hidden; color: #fff; background: #0c4d72; }
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 30, 60, .35), rgba(0, 30, 60, .2)); }
.hero-content { position: relative; z-index: 2; max-width: 820px; margin-top: 75px; padding: 0 24px; text-align: center; }
.hero h1 { margin-bottom: 22px; font-size: clamp(34px, 4vw, 52px); font-weight: 700; line-height: 1.32; letter-spacing: .06em; }
.hero p { margin: 0; max-width: 680px; margin-inline: auto; font-size: 13px; line-height: 1.9; opacity: .92; }

.intro { display: grid; grid-template-columns: 40% 60%; max-width: none; padding: 0; background: linear-gradient(90deg, #084c9a 0 40%, #fff 40%); }
.intro-visual { position: relative; min-height: clamp(640px, 51vw, 980px); padding: 0; overflow: visible; }
.intro-visual img { position: absolute; top: clamp(78px, 7.13vw, 137px); left: clamp(72px, 6.56vw, 126px); width: min(43vw, 830px); max-width: none; border-radius: 0; box-shadow: 0 18px 40px rgba(1, 24, 66, .25); }
.intro-copy { max-width: 600px; margin-left: clamp(80px, 11vw, 210px); padding: 87px 60px; }
.intro-copy h2 { font-size: 30px; margin-bottom: 6px; }
.intro-copy .subtitle { color: #348f57; font-size: 13px; font-weight: 700; margin-bottom: 18px; }
.intro-copy > p:not(.subtitle) { color: #697684; font-size: 13px; margin-bottom: 14px; line-height: 1.85; }
.metrics { display: flex; gap: clamp(24px, 6vw, 70px); margin: 29px 0 24px; }
.metrics div { min-width: 72px; text-align: center; }
.metrics dt { font-size: 36px; font-weight: 700; line-height: 1; color: #212121; }
.metrics dt span { font-size: 20px; }
.metrics dt .metric-unit { margin-left: 6px; font-size: 16px; vertical-align: baseline; }
.metrics dd { margin: 4px 0 0; color: #212121; font-size: 14px; font-weight: 700; }
.metrics .metric-label { display: block; margin-top: 4px; color: #8a96a0; font-size: 12px; }

.news { max-width: 1420px; }
.news-empty { grid-column: 1 / -1; padding: 40px 0; text-align: center; color: #9aa5b0; font-size: 14px; }
.services { max-width: 1580px; padding-bottom: 105px; }
.service-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 3px; max-width: var(--page-width); margin: 0 auto; }
.service-card { position: relative; display: block; min-height: 400px; padding: 30px 18px; overflow: hidden; color: #fff; background-color: #1a3a5c; background-size: cover; background-position: center; transition: transform .25s; }
.service-card::before { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 18, 38, .72) 0%, rgba(0, 18, 38, .35) 50%, rgba(0, 18, 38, .2) 100%); content: ''; }
.service-card:hover { transform: translateY(-3px); }
.service-card-text { position: relative; z-index: 1; }
.service-card h3 { margin: 0 0 10px; font-size: 17px; font-weight: 700; line-height: 1.35; }
.service-card p { margin: 0; font-size: 11px; line-height: 1.7; opacity: .92; }

.equipment { display: grid; grid-template-columns: 1fr 135px; min-height: 470px; color: #fff; background: #00264d; }
.equipment-main { position: relative; overflow: hidden; }
.equipment-panel { display: none; grid-template-columns: minmax(280px, 1fr) minmax(360px, 1.5fr); min-height: 470px; }
.equipment-panel.is-active { display: grid; }
.equipment-copy { padding: 70px clamp(28px, 5vw, 75px); background: linear-gradient(125deg, #002949, #003e7a); }
.equipment-copy h2 { margin-bottom: 10px; font-size: 30px; }
.equipment-subtitle { margin-bottom: 18px; color: #71a9d6; font-size: 13px; font-weight: 700; }
.equipment-desc { color: #b8cadb; font-size: 12px; line-height: 1.9; }
.home-product-list { margin: 0 0 8px; padding: 0; list-style: none; }
.home-product-list li { margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid rgba(255, 255, 255, .12); }
.home-product-list li:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: 0; }
.home-product-list a { color: #fff; font-size: 15px; font-weight: 700; text-decoration: none; }
.home-product-list a:hover { color: #9ec7ef; }
.home-product-list span { display: block; margin-top: 4px; color: #71a9d6; font-size: 12px; }
.home-product-list p { margin: 6px 0 0; color: #b8cadb; font-size: 12px; line-height: 1.7; }
.equipment-detail-btn { display: inline-block; margin-top: 24px; }
.equipment-detail-btn img { height: 36px; width: auto; }
.equipment-visual { display: grid; place-items: center; overflow: hidden; background: #1a3a5c; }
.equipment-visual img { width: 100%; height: 100%; object-fit: cover; }
.equipment-tabs { display: flex; flex-direction: column; background: #fff; }
.equipment-tab { flex: 1; border: 0; border-bottom: 1px solid #e8eef3; background: #fff; color: #526271; font-size: 12px; font-family: inherit; cursor: pointer; transition: background .2s, color .2s; }
.equipment-tab.is-active { background: #084c9a; color: #fff; }

.certificates {
  position: relative;
  padding: clamp(70px, 7.3vw, 105px) 12.6% clamp(80px, 9.4vw, 135px) 8.4%;
  overflow: hidden;
  background: #e8f4fc url('../images/home/honors-bg.jpg') center/cover no-repeat;
}
.certificates-inner { max-width: 58%; }
.certificate-copy h2 { margin-bottom: 8px; font-size: clamp(28px, 2.5vw, 36px); font-weight: 700; line-height: 1.75; }
.cert-subtitle { margin-bottom: clamp(14px, 1.3vw, 22px); color: #999; font-size: clamp(15px, 1.25vw, 18px); line-height: 1.75; }
.cert-desc { max-width: 88%; margin: 0; color: #333; font-size: clamp(14px, 1.1vw, 16px); line-height: 2; }
.certificate-carousel {
  --cert-width: clamp(140px, 14vw, 200px);
  width: min(100%, calc(var(--cert-width) * 4.2));
  margin-top: clamp(24px, 3.4vw, 48px);
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}
.certificate-track { display: flex; width: max-content; animation: certificate-marquee 36s linear infinite; }
.certificate-carousel:hover .certificate-track { animation-play-state: paused; }
.certificate-item { flex: 0 0 var(--cert-width); padding: 10px 16px; }
.certificate-item img { width: 100%; height: auto; aspect-ratio: 243 / 310; object-fit: contain; filter: drop-shadow(0 8px 18px rgba(0, 40, 80, .12)); }
@keyframes certificate-marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.news { padding-bottom: 105px; }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 42px; }
.news-item { display: grid; grid-template-columns: 150px 1fr; gap: 17px; min-height: 90px; padding: 8px; transition: background .2s; }
.news-item:hover { background: #f6f9fc; }
.news-thumb { width: 150px; height: 90px; object-fit: cover; background: #f0f3f6; }
.news-item h3 { margin: 1px 0 4px; font-size: 13px; font-weight: 700; line-height: 1.45; }
.news-item time { color: #9eabb5; font-size: 10px; }
.news-item p { margin: 5px 0 0; color: #7b8792; font-size: 10px; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.contact {
  position: relative;
  padding: clamp(100px, 8.85vw, 170px) 4.2% clamp(120px, 11.98vw, 230px);
  color: #fff;
  background-color: #1a3a52;
  background-size: cover;
  background-position: center;
}
.contact-overlay { position: absolute; inset: 0; background: rgba(8, 28, 52, .42); }
.contact-inner { position: relative; z-index: 1; max-width: 1750px; margin: 0 auto; }
.contact-heading { margin-bottom: clamp(32px, 4.7vw, 68px); text-align: center; }
.contact-heading h2 { margin-bottom: 8px; font-size: clamp(28px, 2.5vw, 36px); font-weight: 700; line-height: 1.75; color: #fff; }
.contact-heading p { max-width: 900px; margin: 0 auto; font-size: clamp(15px, 1.25vw, 18px); line-height: 1.75; color: #fff; }
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.contact-item { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; color: #fff; transition: opacity .2s; }
.contact-item:hover { opacity: .88; }
.contact-icon { width: clamp(88px, 8.23vw, 158px); height: clamp(88px, 8.23vw, 158px); object-fit: contain; }
.contact-label { font-size: clamp(18px, 1.5vw, 22px); font-weight: 700; line-height: 1.4; }
.contact-value { font-size: clamp(15px, 1.25vw, 18px); line-height: 1.5; }

.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 25px; min-height: 300px; padding: clamp(70px, 6.77vw, 130px) max(28px, calc((100% - var(--page-width)) / 2)) clamp(45px, 3.65vw, 70px); background: #222; color: #aab2b8; }
.site-footer .brand { width: auto; padding: 0; background: transparent; color: #fff; }
.site-footer .brand small { color: #aab2b8; }
.site-footer nav { display: flex; gap: 28px; align-items: center; font-size: 12px; flex-wrap: wrap; }
.site-footer p { grid-column: 1 / -1; margin: 0; padding-top: clamp(28px, 2.6vw, 50px); font-size: 9px; text-align: center; }
.privacy-page { width: min(920px, calc(100% - 32px)); margin: 0 auto; padding: clamp(48px, 6vw, 90px) 0; color: var(--ink); }
.privacy-page__header { margin-bottom: 36px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.privacy-page__header h1 { margin: 0 0 10px; font-size: clamp(30px, 4vw, 46px); }
.privacy-page__header p { margin: 0; color: #697684; }
.privacy-page__content { font-size: 15px; line-height: 1.8; }
.privacy-page__content section { margin-top: 30px; }
.privacy-page__content h2 { margin: 0 0 10px; color: #14406e; font-size: 21px; }
.privacy-page__content p,
.privacy-page__content ul { margin: 0 0 14px; }
.privacy-page__content a { color: #0754ae; }
.back-top { position: fixed; z-index: 4; right: 20px; bottom: 20px; width: 38px; height: 38px; border: 0; border-radius: 50%; background: #0754ae; color: #fff; cursor: pointer; opacity: 0; transform: translateY(10px); transition: .2s; }
.back-top.is-visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 900px) {
  body.menu-open { overflow: hidden; }
  .site-header { position: fixed; top: 0; left: 0; width: 100%; min-height: 60px; padding: 0 12px; align-items: center; border-bottom: 1px solid rgba(223,229,234,.9); border-radius: 0; transform: none; background: rgba(255,255,255,.98); color: #252b32; box-shadow: 0 4px 16px rgba(0,32,72,.07); }
  .brand { flex: 1; width: auto; min-width: 0; gap: 8px; padding: 0 10px; border-radius: 0; background: transparent; color: #231f20; }
  .brand-mark { width: 28px; height: 28px; font-size: 17px; flex-shrink: 0; }
  .brand-logo { width: 28px; height: 28px; }
  .brand strong { overflow: hidden; font-size: 15px; white-space: nowrap; text-overflow: ellipsis; }
  .brand small { overflow: hidden; margin-top: 2px; font-size: 6px; white-space: nowrap; text-overflow: ellipsis; letter-spacing: .14em; }
  .language-switch { min-width: auto; height: 60px; margin-left: 0; align-items: center; border-radius: 0; background: transparent; }
  .language-toggle { position: relative; width: 42px; height: 42px; gap: 0; padding: 0; justify-content: center; color: #9b9b9b; font-size: 0; }
  .language-current, .language-arrow { display: none; }
  .language-flag { font-size: 28px; line-height: 1; }
  .language-menu { top: calc(100% - 8px); right: 0; min-width: 165px; }
  .language-menu button { padding: 11px 14px; }
  .menu-toggle { position: relative; z-index: 8; display: block; order: -1; width: 42px; height: 42px; padding: 0; border: 0; background: transparent; color: #7b8791; cursor: pointer; flex-shrink: 0; }
  .menu-toggle__bars { width: 26px; padding: 10px 0; }
  .menu-toggle__close { display: none; width: 36px; }
  .menu-toggle[aria-expanded="true"] { color: #a8a8a8; }
  .menu-toggle[aria-expanded="true"] .menu-toggle__bars { display: none; }
  .menu-toggle[aria-expanded="true"] .menu-toggle__close { display: block; }
  .header-phone { display: none; }
  .main-nav { position: fixed; z-index: 7; inset: 0; display: none; padding: 66px 22px 0; align-content: start; gap: 0; background: rgba(255,255,255,.995); color: #4a535c; transform: none; }
  .main-nav.is-open { display: grid; grid-auto-rows: 52px; grid-template-columns: 1fr; }
  .main-nav a { position: relative; display: flex; align-items: center; height: 52px; min-height: 0; padding: 0 14px 0 18px; border-bottom: 1px solid #eef1f5; font-size: 16px; letter-spacing: .04em; line-height: 1.2; -webkit-tap-highlight-color: transparent; transition: background .15s, color .15s; }
  .main-nav a:first-child { border-top: 1px solid #eef1f5; }
  .main-nav a:active { background: #f3f7fb; }
  .main-nav a::before { position: absolute; top: 14px; bottom: 14px; left: 0; width: 3px; border-radius: 2px; background: linear-gradient(180deg, #0bba8e, #0755b4); content: ''; opacity: 0; transition: opacity .15s; }
  .main-nav a::after { position: static; display: block; height: auto; margin-left: auto; background: none; color: #c3ccd4; content: '›'; font-size: 22px; line-height: 1; transform: translateY(-1px); transition: none; }
  .main-nav .is-active { background: linear-gradient(90deg, rgba(7,80,161,.06), rgba(7,80,161,0)); color: #0750a1; font-weight: 700; }
  .main-nav .is-active::before { opacity: 1; }
  .main-nav .is-active::after { color: #0750a1; }

  .page-banner { min-height: 220px; padding: 90px 20px 40px; }
  .page-banner h1 { font-size: 24px; }
  .about-grid, .product-detail { grid-template-columns: 1fr; gap: 30px; }
  .product-list-grid, .product-list-grid--compact { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .about-visual { min-height: 260px; }
  .about-visual--photo img { width: 100%; }
  .sustain-gallery { grid-template-columns: repeat(3, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .contact-channels__grid { grid-template-columns: 1fr; }
  .sub-nav a { min-width: 0; flex: 1 1 50%; font-size: 12px; padding: 12px 10px; }

  .hero { min-height: 460px; }
  .intro { grid-template-columns: 1fr; background: #fff; }
  .intro-visual { display: grid; min-height: 360px; padding: 28px; place-items: center; background: #084c9a; }
  .intro-visual img { position: static; width: min(100%, 420px); }
  .water-orb { width: min(72vw, 380px); }
  .intro-copy { margin-left: 0; padding: 45px 28px 55px; }
  .service-grid { grid-template-columns: repeat(3, 1fr); }
  .service-card { min-height: 320px; }
  .equipment { grid-template-columns: 1fr; }
  .equipment-panel.is-active { grid-template-columns: 1fr 1.3fr; }
  .equipment-tabs { flex-direction: row; min-height: 50px; }
  .equipment-tab { border-right: 1px solid #e8eef3; border-bottom: 0; }
  .certificates { padding: 70px 8% 90px; background-position: 65% center; }
  .certificates-inner { max-width: 72%; }
  .cert-desc { max-width: 100%; }
  .certificate-item { padding: 8px 12px; }
  .news-grid { gap: 18px; }
  .news-item { grid-template-columns: 105px 1fr; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer nav { flex-wrap: wrap; gap: 12px 24px; }
}

@media (min-width: 640px) and (max-width: 900px) {
  .site-header { min-height: 72px; padding: 0 24px; }
  .brand { padding: 0 24px; }
  .brand strong { font-size: 22px; }
  .brand small { font-size: 8px; }
  .brand-mark { width: 38px; height: 38px; font-size: 24px; }
  .language-switch { height: 72px; }
  .language-toggle, .menu-toggle { width: 50px; height: 50px; }
  .language-flag { font-size: 34px; }
  .main-nav { padding: 86px 30px 20px; }
  .main-nav.is-open { grid-auto-rows: 60px; }
  .main-nav a { height: 60px; min-height: 0; padding: 0 16px 0 20px; font-size: 19px; line-height: 1.2; }
  .main-nav a::before { top: 17px; bottom: 17px; }
  .main-nav a::after { font-size: 26px; }
}

@media (max-width: 560px) {
  .section { padding: 50px 16px; }
  .section-heading { margin-bottom: 25px; }
  .section-heading h2, h2 { font-size: 21px; }
  .tab-panels { padding: 40px 16px 60px; }
  .page-meta { padding: 0 16px; }
  .contact-page, .article-page { padding-left: 16px; padding-right: 16px; }
  .product-list-page, .product-detail-page, .news-list-page { padding-left: 16px; padding-right: 16px; }
  .product-list-grid, .product-list-grid--compact { grid-template-columns: 1fr; gap: 16px; }
  .exhibition-scenarios { padding: 24px 18px; }

  .hero { min-height: 335px; padding-top: 48px; }
  .hero-content { margin-top: 15px; padding: 0 20px; }
  .hero .eyebrow { font-size: 8px; }
  .hero h1 { margin-bottom: 11px; font-size: 24px; }
  .hero p { font-size: 10px; }
  .button { min-width: 95px; padding: 7px 15px; font-size: 10px; }
  .text-link { font-size: 10px; }
  .intro-visual { min-height: 270px; }
  .intro-copy { padding: 29px 16px 37px; }
  .intro-copy h2 { font-size: 20px; }
  .intro-copy > p:not(.section-kicker):not(.subtitle) { font-size: 11px; }
  .metrics { justify-content: space-between; gap: 8px; margin-top: 20px; }
  .metrics dt { font-size: 25px; }
  .services { padding-bottom: 55px; }
  .service-grid { grid-template-columns: repeat(2, 1fr); gap: 3px; }
  .service-card { min-height: 240px; padding: 22px 14px; }
  .service-card h3 { font-size: 15px; }
  .service-card p { font-size: 10px; }
  .service-card:last-child { grid-column: 1 / -1; min-height: 200px; }
  .equipment-panel.is-active { grid-template-columns: 1fr; }
  .equipment-copy { padding: 45px 20px; }
  .equipment-copy h2 { font-size: 22px; }
  .equipment-visual { min-height: 245px; }
  .equipment-tabs { flex-direction: row; flex-wrap: wrap; }
  .equipment-tab { flex: 1 1 50%; min-height: 44px; }
  .certificates { padding: 50px 16px 60px; background-position: 80% center; }
  .certificates-inner { max-width: 100%; }
  .certificate-carousel { --cert-width: 120px; width: 100%; mask-image: none; }
  .certificate-item { padding: 6px 8px; }
  .news { padding-bottom: 55px; }
  .news-grid { grid-template-columns: 1fr; gap: 11px; }
  .news-item { grid-template-columns: 92px 1fr; gap: 11px; min-height: 75px; }
  .news-item h3 { font-size: 11px; }
  .news-item p { font-size: 9px; }
  .contact { padding: 80px 16px 100px; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); row-gap: 45px; }
  .contact-icon { width: 82px; height: 82px; }
  .site-footer { min-height: 310px; padding: 70px 24px 55px; }
  .site-footer nav { font-size: 10px; }
  .sustain-gallery { grid-template-columns: repeat(2, 1fr); }
  .sub-nav a { flex: 1 1 100%; }
  .back-top { right: 12px; bottom: 12px; }
}