/* ==========================================================================
   Richest Group - Global Stylesheet
   B2B Chemical Website | Responsive | SEO-friendly semantic styling
   ========================================================================== */

:root {
  /* ===== 品牌设计规范（2026-09 统一制定） =====
     色彩 ≤3：品牌蓝(重点点缀) / 深海军蓝(标题·深底区块) / 中性灰白
     圆角：小元素 6 / 卡片 12 / 大容器 16
     字号层级：H1 clamp(42,5.6vw,72) · H2 clamp(26,2.6vw,32) · H3 18 · 正文 16 · 辅助 14/13 */
  /* 品牌色取自 logo.png：主蓝 #0084cc（Richest 字样天蓝），深底/浅底由此派生 */
  --primary: #0084cc;
  --primary-dark: #00619e;
  --primary-light: #4db3e8;   /* 深色底上的品牌蓝（保证对比度） */
  --primary-btn: rgba(51, 165, 220, .88);  /* 实心按钮用蓝：更淡且微透明，hover 回到品牌蓝 */
  --navy: #0c2d57;
  --accent: var(--primary);        /* 原绿色点缀并入品牌蓝，变量名保留兼容旧规则 */
  --accent-dark: var(--primary-dark);
  --text: #22303f;
  --muted: #5f7086;
  --border: #e2e8f0;
  --bg-light: #f4f7fb;
  --white: #ffffff;
  --radius: 12px;
  --r-sm: 6px;
  --r-lg: 16px;
  --shadow: 0 6px 24px rgba(12, 45, 87, .08);
  --shadow-lg: 0 14px 44px rgba(12, 45, 87, .14);
  --header-h: 80px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --fs-h1: clamp(42px, 5.6vw, 72px);
  --fs-h2: clamp(26px, 2.6vw, 32px);
  --fs-h3: 18px;
  --font: "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth; -webkit-text-size-adjust: 100%;
  /* 锚点跳转避开固定页头 */
  scroll-padding-top: calc(var(--header-h) + 28px);
  scrollbar-width: thin; scrollbar-color: #b9c8da #eef2f7;
}

body {
  font-family: var(--font);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  background: var(--white);
  /* 页头 fixed，始终白底并为其预留空间 */
  padding-top: var(--header-h);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.3; color: var(--navy); font-weight: 700; }

/* 页面两边留空收窄：容器加宽至 1360，随屏窄时保留 32px 呼吸边距 */
.container { width: 100%; max-width: 1360px; margin: 0 auto; padding: 0 32px; }

.section { padding: 96px 0; }
.section--light { background: var(--bg-light); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head .kicker {
  display: inline-flex; align-items: center; gap: 10px; color: var(--accent); font-weight: 700;
  text-transform: uppercase; letter-spacing: 2px; font-size: 13px; margin-bottom: 10px;
}
.section-head .kicker::after { content: ""; width: 28px; height: 2px; background: var(--accent); display: inline-block; }
.section-head h2 { font-size: var(--fs-h2); margin-bottom: 14px; }
.section-head p { color: var(--muted); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 6px;
  font-weight: 600; font-size: 15px; cursor: pointer; border: 2px solid transparent;
  transition: all .25s ease; text-align: center;
}
.btn--primary { background: var(--primary-btn); color: #fff; }
.btn--primary:hover { background: var(--primary); color: #fff; }
.btn--sm { padding: 8px 24px; font-size: 13.5px; border-radius: 5px; }
/* 精致胶囊 More 按钮：描边胶囊 + 箭头滑动 */
.btn-more {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 28px; font-size: 13.5px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase;
  color: var(--navy); background: #fff; border: 1px solid var(--border); border-radius: 999px;
  box-shadow: 0 2px 10px rgba(10, 34, 68, .05);
  transition: all .3s;
}
.btn-more svg { width: 15px; height: 15px; fill: currentColor; transition: transform .3s; }
.btn-more:hover { color: var(--accent); border-color: var(--accent); box-shadow: 0 8px 22px rgba(10, 34, 68, .12); transform: translateY(-2px); }
.btn-more:hover svg { transform: translateX(4px); }
.btn--accent { background: var(--primary-btn); color: #fff; }
.btn--accent:hover { background: var(--primary); color: #fff; }
.btn--outline { border-color: #fff; color: #fff; background: transparent; }
.btn--outline:hover { background: #fff; color: var(--navy); }
.btn--ghost { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn--ghost:hover { background: var(--primary); color: #fff; }
.btn svg { width: 15px; height: 15px; vertical-align: -2px; margin-right: 7px; fill: currentColor; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: #fff;
  box-shadow: 0 2px 12px rgba(12, 45, 87, .07);
}
.navbar { display: flex; align-items: center; gap: 24px; height: var(--header-h); }
.navbar__logo { display: flex; align-items: center; flex-shrink: 0; }
.navbar__logo img { height: 44px; width: auto; }
.main-nav { margin-left: auto; flex-shrink: 0; }
.main-nav > ul { display: flex; align-items: center; gap: 8px; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a {
  display: block; padding: 10px 13px; color: var(--text); font-weight: 600;
  font-size: 15.5px; letter-spacing: .2px; border-radius: 6px; position: relative; white-space: nowrap;
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li > a.active { color: var(--primary); }
/* 导航下划线：hover 蓝色划入，当前页保持 */
.main-nav > ul > li > a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 3px; border-radius: 2px; background: var(--primary);
  transform: scaleX(0); transform-origin: left center;
  transition: transform .3s var(--ease);
}
@media (hover: hover) {
  .main-nav > ul > li > a:hover::after { transform: scaleX(1); }
}
.main-nav > ul > li > a.active::after { background: var(--primary); transform: scaleX(1); }

/* dropdown */
.main-nav .has-sub > a { padding-right: 24px; }
.main-nav .has-sub > a::before {
  content: ""; position: absolute; right: 12px; top: 50%; margin-top: -3px;
  border: 5px solid transparent; border-top-color: currentColor; border-bottom: 0;
}
.nav-sub {
  position: absolute; top: 100%; left: 0; min-width: 260px; background: #fff;
  border-radius: 0 0 10px 10px; box-shadow: var(--shadow-lg); padding: 10px 0;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all .22s ease; border-top: 3px solid var(--accent);
}
.main-nav .has-sub:hover .nav-sub,
.main-nav .has-sub:focus-within .nav-sub { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-sub a { display: block; padding: 10px 20px; color: var(--text); font-size: 14.5px; }
.nav-sub a:hover { background: var(--bg-light); color: var(--primary); padding-left: 26px; }

/* 窄桌面（行情条已隐藏的区间）导航再紧凑一档 */
@media (min-width: 769px) and (max-width: 1100px) {
  .main-nav > ul { gap: 4px; }
  .main-nav > ul > li > a { padding: 10px 9px; font-size: 15px; }
  .main-nav .has-sub > a { padding-right: 21px; }
}

.navbar .btn--inquiry { padding: 10px 22px; white-space: nowrap; }

.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer; padding: 8px;
  margin-left: auto;
  /* 移动端抽屉展开时保持可点（抽屉 .main-nav z-index 1100 同在页头层叠上下文内） */
  position: relative; z-index: 1110;
}
.nav-toggle span { display: block; width: 26px; height: 3px; background: var(--navy); border-radius: 2px; margin: 5px 0; transition: all .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- Hero slider ---------- */
.hero { position: relative; overflow: hidden; height: calc(100vh - var(--header-h)); min-height: 600px; max-height: 900px; }
.hero__slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease;
}
.hero__slide.active { opacity: 1; z-index: 1; }
.hero__slide img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.06); filter: brightness(1.04) saturate(1.06); }
.hero__slide.active img { animation: heroZoom 7s ease-out forwards; }
@keyframes heroZoom { from { transform: scale(1.06); } to { transform: scale(1); } }
.hero__overlay {
  position: absolute; inset: 0;
  /* 图片整体微压暗：左侧渐变 + 底部压角保证文字可读 */
  background:
    linear-gradient(0deg, rgba(5, 22, 45, .38) 0%, rgba(5, 22, 45, 0) 34%),
    linear-gradient(90deg, rgba(5, 22, 45, .42) 0%, rgba(5, 22, 45, .18) 52%, rgba(5, 22, 45, .06) 80%);
  display: flex; align-items: center;
  padding-bottom: 110px; box-sizing: border-box;
}
.hero__content { color: #fff; max-width: 920px; }
.hero__content .kicker { color: var(--primary-light); font-weight: 700; letter-spacing: 4px; text-transform: uppercase; font-size: 13px; display: inline-flex; align-items: center; gap: 10px; }
.hero__content .kicker::before { content: ""; width: 34px; height: 2px; background: var(--primary-light); display: inline-block; }
.hero__content h1 {
  font-family: Georgia, "Times New Roman", serif;
  color: #fff; font-size: clamp(52px, 6.6vw, 92px); font-weight: 700;
  line-height: 1.08; margin: 0 0 24px; letter-spacing: -.3px;
  text-shadow: 0 4px 30px rgba(5, 22, 45, .5);
}
/* 两行错位排版：第二行缩进至首行 "er" 附近，并稍下沉 */
.hero__content h1 .l1, .hero__content h1 .l2 { display: block; }
.hero__content h1 .l2 { padding-left: 2.1em; margin-top: .16em; }
/* 强调词：衬线斜体 + 天蓝渐变文字，与无衬线主标形成独特对比 */
.hero__content h1 em {
  font-family: Georgia, "Times New Roman", serif; font-style: italic; font-weight: 700;
  letter-spacing: 0; padding-right: .08em;
  background: linear-gradient(92deg, #bfe6fa 0%, var(--primary-light) 52%, #23a3e8 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: none; filter: drop-shadow(0 4px 16px rgba(5, 22, 45, .45));
}
.hero__content p { font-size: 20px; color: #e4ecf6; margin-bottom: 34px; line-height: 1.7; max-width: 640px; text-shadow: 0 2px 14px rgba(5, 22, 45, .5); }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.hero__actions .btn { padding: 15px 40px; font-size: 15.5px; }
.hero__trust { display: flex; gap: 10px 28px; flex-wrap: wrap; margin-top: 76px; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.2); }
.hero__trust span { position: relative; color: #dbe4f0; font-size: 14.5px; font-weight: 600; letter-spacing: .4px; display: inline-flex; align-items: center; gap: 8px; text-shadow: 0 1px 8px rgba(5, 22, 45, .4); }
.hero__trust span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--primary-light); }
.hero__dots {
  position: absolute; bottom: 86px; right: 40px;
  display: flex; gap: 10px; z-index: 5;
}
.hero__dots button {
  width: 34px; height: 4px; border-radius: 2px; border: 0;
  background: rgba(255,255,255,.35); cursor: pointer; padding: 0; transition: background .25s;
}
.hero__dots button.active { background: var(--primary-light); }

/* ---------- Stats strip ---------- */
.stats { background: var(--navy); color: #fff; padding: 42px 0; position: relative; z-index: 5; margin-top: -64px; }
.stats .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; background: #fff; border-radius: var(--r-lg); box-shadow: 0 18px 50px rgba(5, 22, 45, .22); padding: 36px 30px; }
.stats__num { font-size: 40px; font-weight: 800; color: var(--primary); line-height: 1.1; }
.stats__label { font-size: 14.5px; color: var(--muted); margin-top: 4px; }

/* ---------- Category cards ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.cat-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: transform .3s ease, box-shadow .3s ease;
  display: flex; flex-direction: column;
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.cat-card__img { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.cat-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.cat-card:hover .cat-card__img img { transform: scale(1.06); }
.cat-card__body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.cat-card__body h3 { font-size: var(--fs-h3); margin-bottom: 8px; }
.cat-card__body h3 a { color: var(--navy); }
.cat-card__body h3 a:hover { color: var(--primary); }
.cat-card__body p { color: var(--muted); font-size: 14.5px; flex: 1; }
.cat-card__meta { margin-top: 14px; display: flex; justify-content: space-between; align-items: center; }
.cat-card__count { font-size: 12.5px; color: var(--muted); font-weight: 600; }
.link-more { font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.cat-card__meta .link-more { font-size: 13px; color: var(--muted); font-weight: 500; }
.cat-card__meta .link-more:hover { color: var(--primary); }
.link-more::after { content: "→"; transition: transform .2s; }
.link-more:hover::after { transform: translateX(4px); }

/* View-all filler card (category grid 8th cell): navy tile with watermark */
.cat-card--all a {
  position: relative; overflow: hidden; flex: 1;
  display: flex; flex-direction: column; align-items: flex-start; justify-content: center;
  gap: 10px; padding: 28px 26px; text-decoration: none; background: var(--navy);
}
.cat-card--all a::before {
  content: "ALL"; position: absolute; right: -8px; bottom: -30px;
  font-size: 132px; font-weight: 800; letter-spacing: -6px; line-height: 1;
  color: rgba(255, 255, 255, .05); pointer-events: none;
}
.cat-card--all__count {
  font-size: 12.5px; letter-spacing: 1.5px; text-transform: uppercase;
  color: rgba(255, 255, 255, .55);
}
.cat-card--all__title { color: #fff; font-size: 20px; font-weight: 700; }
.cat-card--all__icon {
  margin-top: 12px; width: 46px; height: 46px; border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, .45); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 19px; line-height: 1;
  transition: background .3s ease, color .3s ease, border-color .3s ease;
}
.cat-card--all a:hover .cat-card--all__icon { background: #fff; color: var(--navy); border-color: #fff; }

/* ---------- Product cards (main products) ---------- */
/* 电影感叠层产品卡：整卡图片 + 底部渐变信息条 + hover 浮现 View Product */
.product-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid rgba(10, 34, 68, .07);
  box-shadow: 0 6px 24px rgba(10, 34, 68, .08);
  transition: transform .35s, box-shadow .35s;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 18px 44px rgba(10, 34, 68, .18); }
.product-card__img { display: block; aspect-ratio: 1/1.06; overflow: hidden; background: #eef2f7; position: relative; }
.product-card__img::after { /* 顶部微高光，提升玻璃感 */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, .14), rgba(255, 255, 255, 0) 26%);
}
.product-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.22, .61, .36, 1); }
.product-card:hover .product-card__img img { transform: scale(1.08); }
.product-card__badge {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: var(--accent); color: #fff; font-size: 11.5px; font-weight: 700; letter-spacing: .6px;
  padding: 4px 12px; border-radius: 20px; box-shadow: 0 4px 12px rgba(0, 0, 0, .22);
}
.product-card__body {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 1; padding: 48px 20px 18px;
  background: linear-gradient(180deg, rgba(6, 24, 48, 0) 0%, rgba(6, 24, 48, .55) 46%, rgba(6, 24, 48, .92) 100%);
}
.product-card__body h3 { font-size: 17px; margin-bottom: 4px; }
.product-card__body h3 a { color: #fff; }
.product-card__body h3 a:hover { color: var(--primary-light); }
.product-card__cas { font-size: 12px; letter-spacing: .6px; text-transform: uppercase; color: rgba(255, 255, 255, .68); }
.product-card__body::after {
  content: "View Product →"; display: inline-block; margin-top: 8px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .5px; color: var(--primary-light);
  opacity: 0; transform: translateY(8px); transition: opacity .3s, transform .3s;
}
.product-card:hover .product-card__body::after { opacity: 1; transform: none; }

.prod-list-title { font-size: 24px; margin: 44px 0 20px; }

/* ---------- Product list rows (category pages) ---------- */
.prod-list { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.prod-row { display: flex; align-items: center; gap: 18px; padding: 14px 20px; border-bottom: 1px solid var(--border); transition: background .2s; }
.prod-row:last-child { border-bottom: 0; }
.prod-row:hover { background: var(--bg-light); }
.prod-row--main { background: #fffaf0; }
.prod-row--main:hover { background: #fff5e0; }
.prod-row__img { position: relative; width: 76px; height: 76px; border-radius: 8px; overflow: hidden; flex-shrink: 0; background: #f1f5f9; }
.prod-row__img img { width: 100%; height: 100%; object-fit: cover; }
.prod-row__badge { position: absolute; left: 4px; top: 4px; background: var(--accent); color: #fff; font-size: 10px; font-weight: 700; padding: 1px 7px; border-radius: 10px; }
.prod-row__body { flex: 1; min-width: 0; }
.prod-row__body h3 { font-size: 16px; margin-bottom: 2px; }
.prod-row__body h3 a { color: var(--navy); }
.prod-row__body h3 a:hover { color: var(--primary); }
.prod-row__spec { font-size: 13px; color: var(--muted); }
.prod-row__cas:not(:empty)::before { content: "CAS "; }
.prod-row__cas:not(:empty)::after { content: " | "; }
.prod-row__btn { flex-shrink: 0; padding: 8px 22px; font-size: 13.5px; }

/* ---------- Card-style product grid (products.html) ---------- */
.prod-list--cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; background: none; border-radius: 0; box-shadow: none; overflow: visible; }
.prod-list--cards .prod-row { flex-direction: column; align-items: stretch; gap: 0; padding: 0; border-bottom: 0; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; transition: transform .3s ease, box-shadow .3s ease; }
.prod-list--cards .prod-row:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.prod-list--cards .prod-row:last-child { border-bottom: 0; }
.prod-list--cards .prod-row--main { background: #fffaf0; }
.prod-list--cards .prod-row[hidden] { display: none; }
.prod-list--cards .prod-row__img { width: 100%; height: auto; aspect-ratio: 1 / 1; border-radius: 0; }
.prod-list--cards .prod-row__badge { left: 10px; top: 10px; font-size: 11px; padding: 3px 10px; }
.prod-list--cards .prod-row__body { padding: 16px 18px 12px; }
.prod-list--cards .prod-row__body h3 { font-size: 16px; margin-bottom: 4px; }
.prod-list--cards .prod-row__btn { display: block; margin: 0 18px 18px; padding: 9px 0; font-size: 13.5px; text-align: center; }
@media (max-width: 1100px) { .prod-list--cards { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 820px) { .prod-list--cards { grid-template-columns: repeat(2, 1fr); gap: 14px; } }

/* ---------- Pagination (CMS list pages) ---------- */
.pagination { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 8px; margin: 36px 0 8px; }
.pagination a, .pagination span, .pagination strong {
  min-width: 42px; height: 42px; padding: 0 14px;
  display: inline-flex; align-items: center; justify-content: center;
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  color: var(--navy); font-size: 14px; font-weight: 600; transition: all .2s;
}
.pagination a:hover { background: var(--navy); border-color: var(--navy); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 14px rgba(12, 45, 87, .18); }
.pagination .cur, .pagination strong { background: var(--primary); border-color: var(--primary); color: #fff; pointer-events: none; }
.pagination .pg-dots { border: 0; background: none; pointer-events: none; padding: 0 4px; min-width: 0; }
.pagination .pg-arrow { font-size: 18px; line-height: 1; }
.pagination .pg-disabled { opacity: .38; pointer-events: none; }

/* ---------- Company overview (home) ---------- */
.kicker { display: inline-flex; align-items: center; gap: 10px; color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 2px; font-size: 13px; margin-bottom: 10px; }
.kicker::before { content: ""; width: 28px; height: 2px; background: var(--accent); display: inline-block; }
.overview { display: grid; grid-template-columns: 1.05fr 1fr; gap: 76px; align-items: center; }
.overview__media { position: relative; }
.overview__media::before {
  content: ""; position: absolute; inset: 0; transform: translate(-28px, 28px);
  background: #e9eff7; border-radius: var(--radius);
}
.overview__img-main { position: relative; width: 100%; aspect-ratio: 5/4; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow-lg); display: block; }
.overview__foot { display: flex; align-items: center; gap: 32px; margin-top: 34px; flex-wrap: wrap; }
.overview__years { display: flex; align-items: center; gap: 14px; border-left: 3px solid var(--accent); padding-left: 18px; }
.overview__years strong { font-size: 42px; font-weight: 800; color: var(--primary); line-height: 1; }
.overview__years span { font-size: 13px; font-weight: 600; color: var(--muted); line-height: 1.35; letter-spacing: .3px; }

/* ---------- About slider ---------- */
.about-slider { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
.about-slider__track { display: flex; transition: transform .65s cubic-bezier(.4, 0, .2, 1); }
.about-slider__slide { flex: 0 0 100%; position: relative; }
.about-slider__slide img { width: 100%; aspect-ratio: 5/4; object-fit: cover; display: block; }
.about-slider__tag {
  position: absolute; left: 18px; top: 18px;
  background: rgba(8, 32, 64, .78); color: #fff; backdrop-filter: blur(4px);
  font-size: 12.5px; font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase;
  padding: 7px 14px; border-radius: 6px; border-left: 3px solid var(--accent);
}
.about-slider__ctrl { position: absolute; right: 18px; bottom: 18px; display: flex; align-items: center; gap: 8px; }
.about-slider__count { color: #fff; font-size: 13px; font-weight: 700; letter-spacing: 1.5px; margin-right: 6px; text-shadow: 0 1px 6px rgba(0, 0, 0, .5); font-variant-numeric: tabular-nums; }
.about-slider__btn {
  width: 38px; height: 38px; border-radius: 8px; border: 0; cursor: pointer;
  background: rgba(255, 255, 255, .92); color: var(--navy);
  display: flex; align-items: center; justify-content: center; transition: background .25s, color .25s;
}
.about-slider__btn svg { width: 16px; height: 16px; fill: currentColor; pointer-events: none; }
.about-slider__btn:hover { background: var(--accent); color: #fff; }

/* ---------- Showcase content slider (home) ---------- */
.showcase { position: relative; }
.showcase .about-slider__slide { display: flex; align-items: center; min-height: clamp(400px, 40vw, 520px); }
.showcase .about-slider__slide > img { position: absolute; inset: 0; width: 100%; height: 100%; aspect-ratio: auto; z-index: 0; }
.showcase .about-slider__slide::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(100deg, rgba(7, 22, 43, .92) 0%, rgba(7, 22, 43, .62) 52%, rgba(7, 22, 43, .22) 100%);
}
.showcase .about-slider__ctrl { top: 18px; bottom: auto; right: 18px; z-index: 3; }
.slide-panel { position: relative; z-index: 2; padding: 56px clamp(24px, 5vw, 72px); max-width: 760px; color: #fff; }
.slide-panel--wide { max-width: 900px; }
.slide-panel .kicker { margin-bottom: 8px; }
.slide-panel h2 { color: #fff; font-size: clamp(24px, 3vw, 38px); margin: 0 0 22px; letter-spacing: -.3px; }
.slide-panel p { color: rgba(255, 255, 255, .82); font-size: 15px; line-height: 1.75; margin: 0 0 24px; max-width: 560px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; padding: 10px 20px; border-radius: 999px;
  color: #fff; font-size: 14px; font-weight: 600;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .3);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  transition: background .25s, border-color .25s, transform .25s;
}
.chip:hover { background: var(--accent); border-color: var(--accent); color: #fff; transform: translateY(-2px); }
.chip--accent { background: var(--accent); border-color: var(--accent); }
.chip--accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.partner-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.partner-row img {
  height: 46px; width: auto; max-width: 132px; object-fit: contain;
  background: #fff; border-radius: 8px; padding: 8px 14px;
  transition: transform .25s, box-shadow .25s;
}
.partner-row img:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0, 0, 0, .25); }

/* ---------- Corporate Culture 页（一体化文化体系：居中构成 + 细分隔线串联，五要素平级） ---------- */
.cs { max-width: 1000px; margin: 0 auto; text-align: center; }
.cs > * + * { border-top: 1px solid var(--border); margin-top: 60px; padding-top: 52px; }
.cs h3 { font-size: 20px; font-weight: 700; color: var(--primary); margin: 0 0 18px; letter-spacing: .2px; }

/* 内容统一：衬线宣言体，五处同款 */
.cs p, .cs__values li {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(19px, 1.9vw, 22px); line-height: 1.6; color: var(--navy); margin: 0;
}

/* 使命 & 愿景：对称双栏，图上文下 */
.cs__duo { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; text-align: center; }
.cs__duo figure { margin: 0; }
.cs__duo img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 8px; display: block; margin-bottom: 28px; }
.cs__duo h3 { margin-bottom: 10px; }

/* 核心价值观：一行词阵，蓝点分隔 */
.cs__values ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 14px 0;
}
.cs__values li + li::before { content: "·"; color: var(--primary); font-weight: 700; margin: 0 22px; }

/* ---------- Brand Story 页（RI·CH·EST 字母解构：巨型衬线字母 + 文字栏） ---------- */
.bs { max-width: 960px; margin: 0 auto; }
.bs__lead { max-width: 820px; margin: 0 auto 64px; text-align: center; font-size: 18px; line-height: 1.85; color: var(--muted); }
.bs__lead strong { color: var(--navy); }
.bs__row {
  display: grid; grid-template-columns: 300px 1fr; gap: 44px; align-items: center;
  padding: 44px 0; border-top: 1px solid var(--border);
}
.bs__img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 8px; display: block; }
.bs__text h3 { font-size: 19px; color: var(--navy); margin: 8px 0 14px; line-height: 1.45; }
.bs__text p { font-size: 16px; line-height: 1.85; color: var(--muted); margin: 0; }
.bs-ethic { max-width: 880px; margin: 0 auto; text-align: center; }
.bs-ethic h3 { font-size: 24px; font-weight: 700; color: var(--primary); margin: 0 0 14px; letter-spacing: .2px; }
.bs-ethic__quote {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(20px, 2.2vw, 26px); line-height: 1.5; color: var(--navy); margin: 0 0 22px;
}
.bs-ethic p { font-size: 16px; line-height: 1.85; color: var(--muted); margin: 0; }

/* ---------- Social Responsibility 页 ---------- */
.csr-state { max-width: 880px; margin: 0 auto; text-align: center; }
.csr-quote {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(24px, 2.8vw, 34px); line-height: 1.45; color: var(--navy); margin: 0;
}
.csr-state > p { font-size: 16px; line-height: 1.85; color: var(--muted); margin: 24px auto 0; max-width: 760px; }
.csr-banner { margin-top: 52px; }
.csr-banner img { width: 100%; aspect-ratio: 21 / 9; object-fit: cover; border-radius: 12px; display: block; }
.csr-close { max-width: 820px; margin: 0 auto; text-align: center; }
.csr-close p {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(19px, 2vw, 24px); line-height: 1.7; color: var(--navy); margin: 0;
}

/* 锚点跳转：为固定页头预留偏移，避免版块被页头遮挡 */
section[id] { scroll-margin-top: 92px; }

/* ---------- Development timeline (About)（扁平编辑风：无卡片，细脊线 + 衬线年份） ---------- */
.timeline { position: relative; max-width: 920px; margin: 0 auto; padding: 10px 0 0; }
.timeline::before {
  content: ""; position: absolute; top: 8px; bottom: 34px; left: 50%; width: 1px; margin-left: -.5px;
  background: var(--border);
}
.timeline__item { position: relative; width: 50%; padding: 0 54px 48px 0; text-align: right; }
.timeline__item:nth-child(even) { margin-left: 50%; padding: 0 0 48px 54px; text-align: left; }
.timeline__item::after {
  content: ""; position: absolute; top: 12px; right: -6px; z-index: 1;
  width: 9px; height: 9px; border-radius: 50%;
  background: #fff; border: 2px solid var(--primary);
  transition: background .3s, transform .3s;
}
.timeline__item:nth-child(even)::after { right: auto; left: -6px; }
.timeline__item:hover::after { background: var(--primary); transform: scale(1.3); }
.timeline__year {
  display: block; font-family: Georgia, "Times New Roman", serif;
  font-size: 34px; font-weight: 700; line-height: 1; color: var(--primary);
  margin-bottom: 8px; letter-spacing: 0;
}
.timeline__card { background: none; border: none; box-shadow: none; border-radius: 0; padding: 0; }
.timeline__card h3 { font-size: 17px; margin-bottom: 6px; }
.timeline__card p { font-size: 14px; color: var(--muted); line-height: 1.75; margin: 0; }

/* ---------- Commitment（结尾段落，与正文同字体） ---------- */
.commit-block h2 { margin-bottom: 22px; }
.commit-block__quote { font-size: 16px; color: #3b4a5c; line-height: 1.75; margin-bottom: 14px; }
.commit-block > p:last-child { color: #3b4a5c; font-size: 16px; line-height: 1.75; }
.overview__body h2 { font-size: clamp(26px, 2.6vw, 34px); margin-bottom: 18px; }
.overview__body p { color: var(--muted); margin-bottom: 14px; line-height: 1.75; }
.check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; margin: 22px 0 26px; }
.check-list li { position: relative; padding-left: 30px; font-weight: 600; font-size: 15px; color: var(--navy); }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 2px; width: 18px; height: 18px;
  border-radius: 50%; background: var(--accent);
  -webkit-mask: none;
}
.check-list li::after {
  content: ""; position: absolute; left: 5px; top: 7px; width: 8px; height: 5px;
  border-left: 2px solid #fff; border-bottom: 2px solid #fff; transform: rotate(-45deg);
}

/* ---------- QC steps（扁平化：去色条去底，序号 + 顶部细线） ---------- */
.qc-steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 22px; margin-top: 64px; counter-reset: qc; }
.qc-step { position: relative; padding: 20px 8px 0 0; border-top: 1px solid var(--border); transition: border-color .3s; }
.qc-step:hover { border-top-color: var(--primary); }
.qc-step__num { display: block; font-size: 26px; font-weight: 800; color: var(--primary); opacity: .4; line-height: 1; margin-bottom: 10px; }
.qc-step h4 { font-size: 15.5px; margin-bottom: 6px; }
.qc-step p { font-size: 13px; color: var(--muted); line-height: 1.55; }

/* ---------- Supply strength（扁平化：去左侧色条，大数字裸排） ---------- */
.overview--rev .overview__media::before { transform: translate(28px, 28px); }
.strength-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 26px; margin: 30px 0 34px; }
.strength-item { padding: 4px 0; }
.strength-item strong { display: block; font-size: 30px; font-weight: 800; color: var(--primary); line-height: 1.15; }
.strength-item span { font-size: 13px; color: var(--muted); }

/* ---------- Certification cards ---------- */
.cert-card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s; }
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.cert-card__img { aspect-ratio: 4/3.4; overflow: hidden; background: var(--bg-light); }
.cert-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.cert-card:hover .cert-card__img img { transform: scale(1.06); }
.cert-card__body { padding: 20px 22px 24px; }
.cert-card__body h3 { font-size: 16.5px; margin-bottom: 6px; }
.cert-card__body p { font-size: 13.5px; color: var(--muted); line-height: 1.6; }

/* ---------- Quality（首页：左文右大图，去卡片化） ---------- */
.quality__grid { display: grid; grid-template-columns: 1fr 1.08fr; gap: clamp(44px, 5vw, 84px); align-items: center; }
.quality__body h2 { font-size: var(--fs-h2); margin-bottom: 16px; }
.quality__lead { color: var(--muted); line-height: 1.75; margin-bottom: 16px; max-width: 540px; }
.quality__list li { position: relative; padding: 18px 0 18px 58px; border-top: 1px solid var(--border); }
.quality__list li:last-child { border-bottom: 1px solid var(--border); }
.quality__list li::before {
  content: ""; position: absolute; left: 0; top: 16px; width: 40px; height: 40px; border-radius: 50%;
  background: rgba(0, 132, 204, .1) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%230084cc' d='M9.55 17.3 4.8 12.55l1.4-1.4 3.35 3.35 7.8-7.8 1.4 1.4z'/%3E%3C/svg%3E") center / 20px no-repeat;
  transition: background-color .3s;
}
.quality__list li:hover::before { background-color: rgba(0, 132, 204, .2); }
.quality__list h3 { font-size: 16.5px; margin-bottom: 4px; }
.quality__list p { font-size: 14px; color: var(--muted); line-height: 1.6; margin: 0; }
.quality__media { position: relative; }
.quality__media::before {
  content: ""; position: absolute; inset: 0; transform: translate(-28px, 28px);
  background: #e9eff7; border-radius: var(--r-lg);
}
.quality__media img {
  position: relative; width: 100%; aspect-ratio: 4/3; object-fit: cover;
  border-radius: var(--r-lg); box-shadow: var(--shadow-lg); display: block;
}
/* ---------- Client logo wall ---------- */
.client-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.client-wall a {
  display: flex; align-items: center; justify-content: center; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 16px;
  filter: grayscale(1); opacity: .75; transition: all .3s;
}
.client-wall a:hover { filter: none; opacity: 1; border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-3px); }
.client-wall img { width: 100%; max-width: 180px; height: auto; display: block; }

/* ---------- Honor carousel (multi-visible) ---------- */
.honor-slider { position: relative; }
.honor-slider__viewport { overflow: hidden; }
.honor-slider__track { display: flex; gap: 22px; transition: transform .65s cubic-bezier(.4, 0, .2, 1); }
.honor-slider__track.no-anim { transition: none; }
.honor-slide { flex: 0 0 calc((100% - 66px) / 4); min-width: 0; }
.honor-slide__frame {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  box-shadow: none; transition: border-color .3s;
}
.honor-slide__frame:hover { border-color: var(--primary); }
.honor-slide__img { aspect-ratio: 3/4; overflow: hidden; background: #fff; padding: 12px; box-sizing: border-box; }
.honor-slide__img img { width: 100%; height: 100%; object-fit: contain; display: block; transition: transform .5s ease; }
.honor-slide__frame:hover .honor-slide__img img { transform: scale(1.04); }
.honor-slide__cap {
  background: #fff; color: var(--navy); text-align: center; border-top: 1px solid var(--border);
  padding: 12px 14px; font-size: 13.5px; font-weight: 600; letter-spacing: .3px;
}
.honor-slider__btn {
  position: absolute; top: calc(50% - 27px); transform: translateY(-50%); z-index: 5;
  width: 46px; height: 46px; border-radius: 50%; border: 0; cursor: pointer;
  background: #fff; color: var(--navy); box-shadow: var(--shadow-lg);
  display: flex; align-items: center; justify-content: center; transition: background .25s, color .25s;
}
.honor-slider__btn:hover { background: var(--accent); color: #fff; }
.honor-slider__btn svg { width: 18px; height: 18px; fill: currentColor; pointer-events: none; }
.honor-slider__btn--prev { left: -12px; }
.honor-slider__btn--next { right: -12px; }

/* ---------- Global clients section ---------- */
.clients-global {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(160deg, var(--navy) 0%, #10407c 60%, #0d3266 100%);
}
.clients-global::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, .13) 1px, transparent 1px);
  background-size: 26px 26px; pointer-events: none;
}
.clients-global__globe {
  position: absolute; right: -110px; top: 50%; transform: translateY(-50%);
  width: 560px; height: 560px; opacity: .55; pointer-events: none;
}
.clients-global .container { position: relative; z-index: 2; }
.clients-global .section-head h2 { color: #fff; }
.clients-global .section-head p { color: rgba(255, 255, 255, .72); }
.region-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-bottom: 44px; }
.region-chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px; border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, .28); background: rgba(255, 255, 255, .08);
  color: rgba(255, 255, 255, .88); font-size: 13.5px; font-weight: 600; letter-spacing: .3px;
  backdrop-filter: blur(4px); transition: background .25s, border-color .25s;
}
.region-chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.region-chip:hover { background: rgba(255, 255, 255, .16); border-color: rgba(255, 255, 255, .45); }
/* logo marquee */
.logo-marquee { position: relative; z-index: 2; display: flex; flex-direction: column; gap: 18px; }
.logo-marquee__row { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.logo-marquee__track { display: flex; gap: 18px; width: max-content; animation: marquee 34s linear infinite; }
.logo-marquee__row--rev .logo-marquee__track { animation-direction: reverse; animation-duration: 40s; }
.logo-marquee:hover .logo-marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(calc(-50% - 9px)); } }
.logo-marquee__item {
  flex: 0 0 auto; display: flex; align-items: center; justify-content: center;
  width: 200px; height: 76px; padding: 12px 18px;
  background: #fff; border-radius: 8px;
}
.logo-marquee__item img { max-width: 150px; max-height: 52px; width: auto; height: auto; display: block; object-fit: contain; }

/* ---------- Partners page (editorial, light-bg) ---------- */
.partner-logos .section-head { margin-bottom: 40px; }

/* 静态 logo 墙：统一格子尺寸，logo 框内居中，行列整齐 */
.partner-wall {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 26px; padding: 8px 0 4px;
}
.partner-wall__item {
  width: 230px; height: 110px;
  display: flex; align-items: center; justify-content: center;
}
.partner-wall__item img {
  max-height: 64px; max-width: 190px; width: auto; height: auto;
  display: block; object-fit: contain;
  opacity: .8; transition: opacity .25s;
}
.partner-wall__item:hover img { opacity: 1; }

/* ---------- Team photo band (team page) ---------- */
.culture-photo img { width: 100%; display: block; border-radius: 8px; }
.culture-photo__wide { aspect-ratio: 21 / 9; object-fit: cover; }
.culture-photo__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
.culture-photo__row img { aspect-ratio: 4 / 3; object-fit: cover; }
@media (max-width: 600px) {
  .culture-photo__wide { aspect-ratio: 16 / 9; }
  .culture-photo__row { grid-template-columns: 1fr; }
}

/* ---------- Environment photos (3-image grid, about page) ---------- */
.env-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.env-grid figure { margin: 0; border-radius: 8px; overflow: hidden; }
.env-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; transition: transform .5s ease; }
.env-grid figure:hover img { transform: scale(1.04); }
@media (max-width: 860px) {
  .env-grid { margin-top: 36px; gap: 12px; }
}
@media (max-width: 600px) {
  .env-grid { grid-template-columns: 1fr; }
}

/* ---------- Pill tab filter (products / news) ---------- */
.tab-filter {
  display: flex; align-items: center; gap: 12px;
  background: #fff; border: 1px solid var(--border); border-radius: 999px;
  box-shadow: var(--shadow); padding: 8px 10px; margin-bottom: 12px;
}
.tab-filter__strip {
  flex: 1 1 auto; display: flex; align-items: center; gap: 8px; min-width: 0;
  overflow-x: auto; scrollbar-width: none; scroll-behavior: smooth; padding: 2px 28px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 28px, #000 calc(100% - 28px), transparent);
  mask-image: linear-gradient(90deg, transparent, #000 28px, #000 calc(100% - 28px), transparent);
}
.tab-filter__strip::-webkit-scrollbar { display: none; }
.tab-filter__strip.no-fade { -webkit-mask-image: none; mask-image: none; }
.tab-filter__pill {
  appearance: none; flex: 0 0 auto; display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid transparent; background: transparent; color: #41556f;
  font: 600 14px/1 inherit; font-family: inherit; padding: 11px 20px; border-radius: 999px;
  cursor: pointer; white-space: nowrap; transition: all .3s cubic-bezier(.22, .61, .36, 1);
}
.tab-filter__pill em { font-style: normal; font-size: 11.5px; font-weight: 700; color: #93a3ba; transition: color .3s; }
.tab-filter__pill:hover { background: #f2f6fb; color: var(--navy); }
.tab-filter__pill.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--navy) 100%);
  color: #fff; box-shadow: 0 8px 18px rgba(0, 132, 204, .28);
}
.tab-filter__pill.active em { color: rgba(255, 255, 255, .78); }
.tab-filter__arrow {
  appearance: none; flex: 0 0 auto; width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--border); background: #fff; color: #5a6b85;
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
  transition: all .25s ease;
}
.tab-filter__arrow svg { width: 18px; height: 18px; fill: currentColor; }
.tab-filter__arrow:hover { border-color: var(--primary); color: var(--primary); }
.tab-filter__arrow:disabled { opacity: .28; pointer-events: none; }
.tab-filter__arrow.is-hidden { display: none; }
.tab-filter__count {
  flex: 0 0 auto; white-space: nowrap; background: var(--bg-light); border-radius: 999px;
  padding: 9px 18px; font-size: 13px; font-weight: 600; color: var(--muted);
}
.tab-filter__count strong { color: var(--primary); font-size: 14.5px; margin-right: 3px; }
.prod-filter__tip { font-size: 13px; color: #8595ab; margin: 0 0 26px; }
.prod-filter__tip a { color: #1b3a6b; font-weight: 600; }
.prod-empty { text-align: center; padding: 60px 20px; color: #8595ab; font-size: 15px; }
.prod-empty a { color: #1b3a6b; font-weight: 600; }
.js-paginate [hidden] { display: none !important; }
@media (max-width: 640px) {
  .tab-filter { gap: 8px; padding: 7px 8px; }
  .tab-filter__pill { font-size: 12.5px; padding: 9px 14px; }
  .tab-filter__arrow { width: 34px; height: 34px; }
  .tab-filter__count { display: none; }
}

/* ---------- 产品页：左侧树形分类 + 右侧产品网格（扁平编辑风，无卡片边框阴影） ---------- */
.prod-layout { display: grid; grid-template-columns: 252px 1fr; gap: 40px; align-items: start; }
/* 产品搜索框 */
.prod-search { position: relative; margin-bottom: 14px; }
.prod-search > svg {
  position: absolute; left: 15px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; fill: #93a3ba; pointer-events: none;
}
.prod-search input {
  width: 100%; height: 46px; padding: 0 42px 0 42px; font: inherit; font-size: 15px;
  color: var(--navy); background: #fff; border: 1px solid var(--border); border-radius: 8px;
  transition: border-color .2s, box-shadow .2s;
}
.prod-search input::placeholder { color: #a5b3c5; }
.prod-search input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0, 132, 204, .12); }
.prod-search input::-webkit-search-cancel-button { -webkit-appearance: none; appearance: none; }
.prod-search__clear {
  position: absolute; right: 9px; top: 50%; transform: translateY(-50%);
  width: 26px; height: 26px; border: 0; border-radius: 50%; cursor: pointer;
  background: var(--bg-light); color: var(--muted); font-size: 16px; line-height: 1;
  display: inline-flex; align-items: center; justify-content: center; transition: background .2s, color .2s;
}
.prod-search__clear:hover { background: var(--primary); color: #fff; }
/* 产品搜索实时下拉（线上服务端分页模式） */
.prod-search__drop {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0; z-index: 60;
  background: #fff; border: 1px solid #e6ecf3; border-radius: 12px;
  box-shadow: 0 18px 44px rgba(12, 45, 87, .16), 0 2px 8px rgba(12, 45, 87, .08);
  max-height: 424px; overflow-y: auto;
}
.prod-search__drop[hidden] { display: none; }
.prod-search__item {
  display: flex; align-items: center; gap: 12px; padding: 10px 14px;
  text-decoration: none; transition: background .15s;
}
.prod-search__item:hover, .prod-search__item:focus-visible { background: var(--bg-light); }
.prod-search__thumb { width: 44px; height: 44px; flex-shrink: 0; border-radius: 8px; object-fit: cover; background: var(--bg-light); }
.prod-search__meta { min-width: 0; flex: 1; }
.prod-search__name { display: block; font-size: 14px; font-weight: 600; color: var(--navy); line-height: 1.35; }
.prod-search__spec { display: block; font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prod-search__none { padding: 16px; font-size: 13px; color: var(--muted); }
.prod-search__none a { color: var(--primary); }
.prod-search__all {
  display: block; width: 100%; border: 0; border-top: 1px solid #eef2f7; background: none;
  padding: 11px 14px; font: inherit; font-size: 13px; font-weight: 600; color: var(--primary);
  text-align: center; cursor: pointer; transition: background .15s;
}
.prod-search__all:hover { background: var(--bg-light); }
.prod-tree { position: sticky; top: 100px; }
.prod-tree__head {
  font-size: 13px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: #8595ab; padding-bottom: 12px; margin-bottom: 8px; border-bottom: 2px solid var(--navy);
}
.prod-tree__list, .prod-tree__sub { list-style: none; margin: 0; padding: 0; }
.prod-tree__row { display: flex; align-items: center; gap: 2px; }
.prod-tree__link {
  flex: 1; min-width: 0; display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
  padding: 9px 0; background: none; border: 0; cursor: pointer; font-family: inherit;
  font-size: 15px; font-weight: 600; color: var(--navy); text-align: left; transition: color .2s;
}
.prod-tree__link:hover { color: var(--primary); }
.prod-tree__link.active { color: var(--primary); }
.prod-tree__toggle {
  flex-shrink: 0; width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center;
  background: none; border: 0; cursor: pointer; color: #a5b3c5; border-radius: 6px; transition: color .2s, background .2s;
}
.prod-tree__toggle:hover { color: var(--primary); background: var(--bg-light); }
.prod-tree__toggle svg { width: 15px; height: 15px; fill: currentColor; transition: transform .25s; }
.prod-tree__group.is-open .prod-tree__toggle svg { transform: rotate(90deg); }
/* 二级类目：左侧竖线 + 小横枝，默认展开（.is-open），max-height 折叠动画 */
.prod-tree__sub {
  margin: 0 0 8px; padding-left: 13px; border-left: 1px solid var(--border);
  max-height: 0; overflow: hidden; transition: max-height .3s ease;
}
.prod-tree__group.is-open .prod-tree__sub { max-height: 420px; }
.prod-tree__sublink {
  display: flex; align-items: center; width: 100%; padding: 7px 0;
  background: none; border: 0; cursor: pointer; font-family: inherit; text-align: left;
  font-size: 14px; color: var(--muted); transition: color .2s;
}
.prod-tree__sublink::before { content: ""; flex-shrink: 0; width: 10px; height: 1px; background: #cbd5e1; margin-right: 8px; transition: background .2s; }
.prod-tree__sublink:hover { color: var(--navy); }
.prod-tree__sublink.active { color: var(--primary); font-weight: 600; }
.prod-tree__sublink.active::before { background: var(--primary); }
@media (max-width: 900px) {
  .prod-layout { grid-template-columns: 1fr; gap: 26px; }
  .prod-tree { position: static; }
}

/* ---------- 头部：原油行情条（WTI + Brent，JS 注入，数据源腾讯财经免费行情） ---------- */
.oil-ticker {
  position: relative; top: 9px;  /* 视觉下移，与 logo 错开高度，不占布局、不影响其他元素 */
  display: flex; align-items: center; gap: 10px; margin-left: 84px; padding-left: 14px; flex-shrink: 0;
  border-left: 1px solid var(--border); font-size: 12.5px; color: var(--muted); white-space: nowrap;
}
.oil-ticker__live { width: 6px; height: 6px; border-radius: 50%; background: #16a34a; flex-shrink: 0; animation: oilPulse 2s infinite; }
@keyframes oilPulse { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }
.oil-ticker__item b { color: var(--navy); font-weight: 600; font-variant-numeric: tabular-nums; margin-left: 4px; }
.oil-ticker__item em { font-style: normal; font-size: 11.5px; margin-left: 5px; font-variant-numeric: tabular-nums; }
.oil-ticker__item em.up { color: #16a34a; }
.oil-ticker__item em.down { color: #dc2626; }
/* ≤1280px 头部空间让给导航，行情改由下方通栏细条显示 */
@media (max-width: 1280px) { .oil-ticker { display: none; } }

/* 窄屏/移动端：页头下方通栏行情细条（与头部行情条共用数据，随页面滚动不占位固定高度） */
.oil-strip {
  display: flex; align-items: center; justify-content: center; gap: 16px;
  padding: 7px 16px; background: var(--bg-light); border-bottom: 1px solid var(--border);
  font-size: 11.5px; color: var(--muted); white-space: nowrap; overflow-x: auto;
}
.oil-strip[hidden] { display: none; }
@media (min-width: 1281px) { .oil-strip { display: none; } }

/* ---------- 头部：全站搜索按钮 + 顶部搜索浮层（JS 注入） ---------- */
.nav-search-btn {
  width: 38px; height: 38px; border: 0; border-radius: 50%; background: none; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 6px;
  transition: background .2s;
}
.nav-search-btn svg { width: 19px; height: 19px; fill: var(--navy); transition: fill .2s; }
.nav-search-btn:hover { background: var(--bg-light); }
.nav-search-btn:hover svg { fill: var(--primary); }
.site-search { position: fixed; inset: 0; z-index: 1200; }
.site-search[hidden] { display: none; }
.site-search__mask { position: absolute; inset: 0; background: rgba(12, 45, 87, .45); }
.site-search__panel {
  position: relative; background: #fff; padding: 42px 0 28px;
  box-shadow: 0 24px 60px -12px rgba(12, 45, 87, .25); animation: siteSearchIn .25s ease;
}
@keyframes siteSearchIn { from { transform: translateY(-14px); opacity: .4; } to { transform: none; opacity: 1; } }
.site-search__box { display: flex; align-items: center; gap: 14px; border-bottom: 2px solid var(--navy); padding-bottom: 12px; }
.site-search__box > svg { width: 22px; height: 22px; fill: var(--navy); flex-shrink: 0; }
.site-search__box input { flex: 1; min-width: 0; border: 0; outline: none; font: inherit; font-size: 19px; color: var(--navy); background: none; }
.site-search__box input::placeholder { color: #a5b3c5; }
.site-search__box input::-webkit-search-cancel-button { -webkit-appearance: none; appearance: none; }
.site-search__close {
  flex-shrink: 0; width: 36px; height: 36px; border: 0; border-radius: 50%; cursor: pointer;
  background: var(--bg-light); color: var(--muted); font-size: 19px; line-height: 1; transition: background .2s, color .2s;
}
.site-search__close:hover { background: var(--primary); color: #fff; }
.site-search__results { max-height: 56vh; overflow-y: auto; }
.site-search__group { font-size: 12px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: #8595ab; margin: 20px 0 4px; }
.site-search__item { display: flex; align-items: baseline; gap: 12px; padding: 10px 12px; border-radius: 8px; text-decoration: none; transition: background .15s; }
.site-search__item:hover, .site-search__item:focus-visible { background: var(--bg-light); }
.site-search__item strong { font-size: 15px; color: var(--navy); font-weight: 600; flex-shrink: 0; }
.site-search__item span { font-size: 13px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.site-search__item em { margin-left: auto; font-style: normal; font-size: 11px; letter-spacing: .5px; text-transform: uppercase; color: #a5b3c5; flex-shrink: 0; }
.site-search__hint, .site-search__empty { padding: 26px 2px; font-size: 14px; color: var(--muted); }
.site-search__empty a { color: var(--primary); }
@media (max-width: 640px) {
  .site-search__panel { padding: 26px 0 20px; }
  .site-search__box input { font-size: 16px; }
  .site-search__item span { display: none; }
}

/* ---------- Cooperation process ---------- */
.process { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; counter-reset: step; }
.process__step { position: relative; text-align: center; padding: 0 8px; }
.process__num {
  display: flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--primary); color: #fff; font-size: 20px; font-weight: 800;
  box-shadow: 0 8px 20px rgba(21, 101, 192, .3); position: relative; z-index: 2;
}
.process__step:not(:last-child)::after { content: ""; position: absolute; top: 26px; left: calc(50% + 34px); width: calc(100% - 68px); border-top: 2px dashed #b9c8da; }
.process__step h3 { font-size: 16px; margin-bottom: 6px; }
.process__step p { font-size: 13.5px; color: var(--muted); line-height: 1.55; }

/* ---------- Testimonials（扁平化：去卡底阴影，引号 + 顶部细线的编辑风） ---------- */
.quote-card {
  background: none; border-radius: 0; box-shadow: none; position: relative;
  padding: 30px 8px 0 0; border-top: 1px solid var(--border);
  transition: border-color .3s var(--ease);
}
.quote-card::before { content: "\201C"; position: absolute; top: 16px; left: 0; font-size: 54px; line-height: 1; color: var(--primary); opacity: .3; font-family: Georgia, serif; }
.quote-card p { position: relative; font-size: 15px; color: var(--text); line-height: 1.7; margin-bottom: 20px; font-style: italic; padding-left: 42px; }
.quote-card footer { padding-left: 42px; }
.quote-card footer strong { display: block; font-size: 15px; color: var(--navy); }
.quote-card footer span { font-size: 13px; color: var(--muted); }

/* ---------- Why choose us（编辑风：衬线大编号 + 顶部强调短条，无图标块无卡底） ---------- */
.feature {
  position: relative; text-align: left; padding: 30px 24px 10px 2px;
  background: none; border-radius: 0; box-shadow: none;
  border-top: 1px solid var(--border);
}
/* 顶部品牌蓝强调短条，hover 时延展 */
.feature::before {
  content: ""; position: absolute; top: -1px; left: 0;
  width: 44px; height: 2px; background: var(--primary);
  transition: width .4s var(--ease);
}
.feature:hover::before { width: 76px; }
.feature__num {
  display: block; font-family: Georgia, "Times New Roman", serif;
  font-size: 46px; font-weight: 700; line-height: 1; margin-bottom: 18px;
  color: rgba(12, 45, 87, .14); transition: color .35s;
}
.feature:hover .feature__num { color: var(--primary); }
/* 优势项配图：8px 圆角、16/10 裁切、扁平无阴影 */
.feature__img { display: block; position: relative; border-radius: 8px; overflow: hidden; margin-bottom: 22px; }
.feature__img img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.feature h3 { font-size: 19px; margin-bottom: 10px; }
.feature p { color: var(--muted); font-size: 14.5px; line-height: 1.75; }

/* ---------- Applications ---------- */
.app-card {
  position: relative; border-radius: var(--radius); overflow: hidden; min-height: 240px;
  display: flex; align-items: flex-end; box-shadow: var(--shadow);
}
.app-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.app-card:hover img { transform: scale(1.06); }
.app-card__body {
  position: relative; width: 100%; padding: 20px 22px; color: #fff;
  background: linear-gradient(0deg, rgba(8, 32, 64, .88) 0%, rgba(8, 32, 64, .25) 80%, transparent 100%);
}
.app-card__body h3 { color: #fff; font-size: 18px; margin-bottom: 4px; }
.app-card__body p { font-size: 13.5px; color: #d7e2ef; }

/* ---------- News ---------- */
.news-card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s; display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-card__img { aspect-ratio: 16/9; overflow: hidden; }
.news-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-card:hover .news-card__img img { transform: scale(1.06); }
.news-card__body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.news-card__date { font-size: 13px; color: var(--accent); font-weight: 700; margin-bottom: 8px; }
.news-card__body h3 { font-size: 18px; margin-bottom: 10px; }
.news-card__body h3 a { color: var(--navy); }
.news-card__body h3 a:hover { color: var(--primary); }
.news-card__body p { color: var(--muted); font-size: 14.5px; flex: 1; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--navy) 0%, var(--primary-dark) 60%, var(--primary) 100%);
  color: #fff; padding: 60px 0; text-align: center;
}
.cta-band h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }
.cta-band p { color: #d7e2ef; max-width: 620px; margin: 0 auto 26px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: #b9c8da; font-size: 14.5px; }
.footer-main { padding: 64px 32px 40px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }
.site-footer h4 { color: #fff; font-size: 17px; margin-bottom: 18px; position: relative; padding-bottom: 10px; }
.site-footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 36px; height: 3px; background: var(--accent); border-radius: 2px; }
.site-footer a { color: #b9c8da; }
.site-footer a:hover { color: #fff; }
.footer-about img { width: 220px; height: auto; margin-bottom: 16px; border-radius: 8px; box-shadow: 0 4px 14px rgba(0, 0, 0, .25); }
.footer-links li { margin-bottom: 10px; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; align-items: flex-start; }
.footer-contact svg { width: 16px; height: 16px; fill: var(--accent); flex-shrink: 0; margin-top: 4px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); padding: 18px 0; text-align: center; font-size: 13.5px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { background: var(--bg-light); padding: 14px 0; font-size: 14px; color: var(--muted); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: #b0bdcd; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb [aria-current] { color: var(--navy); font-weight: 600; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { position: relative; color: #fff; }
.page-hero img { width: 100%; height: 300px; object-fit: cover; }
.page-hero__overlay { position: absolute; inset: 0; background: rgba(8, 32, 64, .68); display: flex; align-items: center; }
.page-hero h1 { color: #fff; font-size: 38px; }
.page-hero p { color: #d7e2ef; margin-top: 8px; max-width: 640px; }

/* ---------- Category / list pages ---------- */
.layout-2col { display: grid; grid-template-columns: 280px 1fr; gap: 40px; align-items: start; }
.sidebar { position: sticky; top: calc(var(--header-h) + 20px); }
.sidebar-box { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; margin-bottom: 24px; }
.sidebar-box h3 { font-size: 17px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid var(--bg-light); }
.side-cat li { margin-bottom: 4px; }
.side-cat a {
  display: flex; justify-content: space-between; padding: 10px 12px; border-radius: 6px;
  color: var(--text); font-size: 14.5px; font-weight: 500;
}
.side-cat a:hover, .side-cat a.active { background: var(--bg-light); color: var(--primary); }
.side-cat a.active { font-weight: 700; }
.side-cat .num { color: var(--accent); font-size: 12.5px; font-weight: 700; }
.sidebar-cta { background: linear-gradient(135deg, var(--navy), var(--primary-dark)); color: #fff; }
.sidebar-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,.15); }
.sidebar-cta p { color: #d7e2ef; font-size: 14px; margin-bottom: 16px; }

/* ---------- Product table ---------- */
.rich-text table { width: min(640px, 100%) !important; min-width: 0 !important; border-collapse: separate; border-spacing: 0; font-size: 15px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; margin: 18px 0 !important; }
.rich-text table th, .rich-text table td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
.rich-text table th { background: var(--navy); color: #fff; font-size: 14px; letter-spacing: .5px; border-bottom: 0; }
.rich-text table:not(:has(th)) tr:first-child td { background: var(--navy); color: #fff; font-size: 14px; font-weight: 600; letter-spacing: .5px; border-bottom: 0; }
.rich-text table:not(:has(th)) tr:first-child:hover td { background: var(--navy); }
.rich-text table tbody tr:hover, .rich-text table:not(:has(tbody)) tr:not(:first-child):hover { background: var(--bg-light); }
.rich-text table tr:last-child td { border-bottom: 0; }
.rich-text table .star { color: #f5a623; font-weight: 700; margin-right: 6px; }
.tag-main { display: inline-block; background: #fff4e0; color: #c47d0e; font-size: 12px; font-weight: 700; padding: 2px 10px; border-radius: 12px; margin-left: 8px; }

/* ---------- Product detail ---------- */
.pd-grid { display: grid; grid-template-columns: 460px 1fr; gap: 48px; align-items: start; }
/* 产品图画廊：主图 + 3 缩略图切换 */
.pd-gallery__main {
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: #fff;
  border: 1px solid rgba(10, 34, 68, .06);
}
.pd-gallery__main img { width: 100%; aspect-ratio: 1/1; object-fit: cover; display: block; transition: opacity .25s ease; }
.pd-gallery__main img.is-switching { opacity: 0; }
.pd-gallery__thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 12px; }
.pd-gallery__thumbs button {
  padding: 0; border: 2px solid transparent; border-radius: 10px; overflow: hidden;
  background: #fff; cursor: pointer; opacity: .65;
  box-shadow: 0 2px 8px rgba(10, 34, 68, .08);
  transition: opacity .25s, border-color .25s, box-shadow .25s, transform .25s;
}
.pd-gallery__thumbs button img { width: 100%; aspect-ratio: 1/1; object-fit: cover; display: block; }
.pd-gallery__thumbs button:hover { opacity: 1; transform: translateY(-2px); }
.pd-gallery__thumbs button.active { border-color: var(--accent); opacity: 1; box-shadow: 0 4px 14px rgba(0, 132, 204, .3); }
.pd-info h1 { font-size: 32px; margin-bottom: 14px; }
.pd-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }
.pd-meta span { background: var(--bg-light); border: 1px solid var(--border); border-radius: 6px; padding: 6px 14px; font-size: 13.5px; color: var(--navy); font-weight: 600; }
.pd-meta strong { color: var(--muted); font-weight: 500; margin-right: 4px; }
/* TDS / SDS 小型下载链接（标题下方） */
.pd-docs { display: flex; gap: 10px; margin: 14px 0 18px; }
.pd-docs a {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 700; letter-spacing: .3px; color: var(--primary);
  border: 1px solid var(--border); border-radius: 6px; padding: 6px 14px;
  background: #f7fafd; transition: all .25s;
}
.pd-docs a svg { width: 14px; height: 14px; fill: currentColor; }
.pd-docs a:hover { border-color: var(--accent); color: var(--accent); background: #fff; transform: translateY(-1px); }
.pd-info .lead { color: var(--muted); margin-bottom: 24px; }
.pd-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.pd-actions .btn svg { width: 17px; height: 17px; fill: currentColor; }
.pd-actions button.btn { cursor: pointer; border: none; }

/* ===== 页内留言弹窗（Leave Message） ===== */
body.msg-open { overflow: hidden; }
.msg-modal { position: fixed; inset: 0; z-index: 1200; display: flex; align-items: center; justify-content: center; padding: 20px; }
.msg-modal[hidden] { display: none; }
.msg-modal__mask { position: absolute; inset: 0; background: rgba(5, 22, 45, .55); backdrop-filter: blur(3px); }
.msg-modal__dialog {
  position: relative; width: 100%; max-width: 460px; background: #fff;
  border-radius: 14px; padding: 34px 32px 30px;
  box-shadow: 0 30px 80px rgba(5, 22, 45, .35);
  animation: msgPop .3s cubic-bezier(.22, .61, .36, 1);
  max-height: calc(100vh - 40px); overflow-y: auto;
}
@keyframes msgPop { from { opacity: 0; transform: translateY(24px) scale(.97); } }
.msg-modal__close {
  position: absolute; top: 10px; right: 16px; background: none; border: none; cursor: pointer;
  font-size: 26px; line-height: 1; color: var(--muted); transition: color .2s;
}
.msg-modal__close:hover { color: var(--navy); }
.msg-modal__dialog h3 { font-size: 22px; margin-bottom: 6px; }
.msg-modal__sub { font-size: 13.5px; color: var(--muted); margin-bottom: 18px; }
/* 表单字段：小标签在上、必填红星（与老板给的参考一致） */
.msg-modal__form label { display: block; margin-bottom: 12px; }
.msg-modal__form label > span { display: block; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--navy); margin-bottom: 6px; }
.msg-modal__form label > span i { color: #dc2626; font-style: normal; }
.msg-modal__form input, .msg-modal__form textarea {
  width: 100%; box-sizing: border-box; font: inherit; font-size: 14px;
  border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px;
  transition: border-color .2s, box-shadow .2s;
}
.msg-modal__form input:focus, .msg-modal__form textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0, 132, 204, .12); }
.msg-modal__form textarea { resize: vertical; }
.msg-modal__form .btn { width: 100%; justify-content: center; border: none; cursor: pointer; }
.msg-modal__ok { background: #f2f8e6; border: 1px solid #d9e8bb; color: #4d7c0f; border-radius: 8px; padding: 16px; font-size: 14.5px; line-height: 1.6; }
.pd-quick { background: var(--bg-light); border-radius: var(--radius); padding: 20px 24px; }
.pd-quick h3 { font-size: 16px; margin-bottom: 10px; }
.pd-quick ul li { padding: 5px 0 5px 22px; position: relative; font-size: 14.5px; color: var(--text); }
.pd-quick ul li::before { content: ""; position: absolute; left: 4px; top: 13px; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }

.rich-text h2 { font-size: 26px; margin: 40px 0 16px; }
.rich-text h3 { font-size: 20px; margin: 28px 0 12px; }
.rich-text p { margin-bottom: 14px; color: #3b4a5c; }
.rich-text a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.rich-text ul { margin: 0 0 16px 4px; }
.rich-text ul li { padding: 4px 0 4px 24px; position: relative; }
.rich-text ul li::before { content: ""; position: absolute; left: 6px; top: 14px; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); }
.rich-text ol { margin: 0 0 16px 24px; list-style: decimal; }
.rich-text ol li { padding: 4px 0 4px 6px; }
.rich-text img { max-width: 100%; height: auto; border-radius: var(--radius); margin: 10px 0 18px; }
.rich-text blockquote { margin: 18px 0; padding: 14px 20px; background: var(--bg-light); border-left: 4px solid var(--accent); border-radius: 0 8px 8px 0; color: #3b4a5c; }

.related-products { margin-top: 56px; }

/* ---------- FAQ accordion ---------- */
.faq-item { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 14px; overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 20px 56px 20px 24px; font-size: 16.5px; font-weight: 600; color: var(--navy);
  position: relative; font-family: var(--font);
}
.faq-q::after {
  content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  font-size: 24px; color: var(--primary); transition: transform .25s;
}
.faq-item.open .faq-q::after { transform: translateY(-50%) rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a__inner { padding: 0 24px 22px; color: var(--muted); font-size: 15px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.contact-info-card { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 36px; }
.contact-info-card h3 { color: #fff; font-size: 20px; margin-bottom: 20px; }
.contact-info-card li { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.contact-info-card svg { width: 20px; height: 20px; fill: var(--accent); flex-shrink: 0; margin-top: 3px; }
.contact-info-card strong { display: block; font-size: 14px; color: #9fb4cd; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 2px; }
.contact-info-card li a { display: block; }
.contact-form { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 36px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.form-group label em { color: #d33; font-style: normal; }
.form-control {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 6px;
  font-size: 15px; font-family: var(--font); color: var(--text); transition: border-color .2s, box-shadow .2s;
  background: #fbfcfe;
}
.form-control:focus { outline: 0; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0, 132, 204, .12); background: #fff; }
textarea.form-control { min-height: 130px; resize: vertical; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 12px; }
.form-success { display: none; background: #eaf7e0; border: 1px solid #bfe3a8; color: #3f7a1e; border-radius: 6px; padding: 14px 18px; margin-bottom: 18px; font-size: 14.5px; }

/* ---------- Misc ---------- */
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }
.back-top {
  position: fixed; right: 24px; bottom: 24px; width: 46px; height: 46px; border-radius: 50%;
  background: var(--primary); color: #fff; border: 0; cursor: pointer; font-size: 20px;
  box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transition: all .3s; z-index: 900;
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

.cert-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.cert-item { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 26px; display: flex; gap: 18px; align-items: flex-start; transition: transform .3s; }
.cert-item:hover { transform: translateY(-4px); }
.cert-item__icon { width: 52px; height: 52px; border-radius: 10px; background: linear-gradient(135deg, var(--accent), var(--accent-dark)); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.cert-item__icon svg { width: 26px; height: 26px; fill: #fff; }
.cert-item h3 { font-size: 17px; margin-bottom: 6px; }
.cert-item p { font-size: 14px; color: var(--muted); }

.doc-table td .btn { padding: 8px 18px; font-size: 13.5px; }

/* ---------- Article ---------- */
.article-body { max-width: 820px; margin: 0 auto; }
.article-meta { color: var(--muted); font-size: 14px; margin-bottom: 24px; display: flex; gap: 18px; flex-wrap: wrap; }
.article-body img { border-radius: var(--radius); margin: 20px 0; }
/* ---------- Prev / Next article ---------- */
.pn-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 44px; }
.pn-nav > div {
  display: block; background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 22px; font-size: 14.5px; color: var(--muted); transition: all .25s; min-height: 60px;
}
.pn-nav > div:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.pn-nav a { color: var(--text); font-weight: 600; }
.pn-nav a:hover { color: var(--primary); }
.pn-nav .pn-next { text-align: right; }
/* ---------- TAGS cloud & info tags ---------- */
.info-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--border); align-items: center; }
.info-tags .tag-label { font-weight: 700; color: var(--navy); font-size: 14px; margin-right: 4px; }
.info-tags a, .tag-pill {
  display: inline-block; background: var(--bg-light); border: 1px solid var(--border); color: var(--text);
  font-size: 13px; padding: 5px 16px; border-radius: 20px; transition: all .25s;
}
.info-tags a:hover, .tag-pill:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.tag-cloud .tag-pill { font-size: 14px; padding: 8px 20px; background: #fff; box-shadow: var(--shadow); border-color: transparent; }
.tag-cloud .tag-pill:hover { background: var(--primary); color: #fff; }
.tag-cloud .tag-pill .num { color: var(--accent); font-weight: 700; margin-left: 4px; font-size: 12px; }
.tag-cloud .tag-pill:hover .num { color: #fff; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
  .pd-grid { grid-template-columns: 380px 1fr; gap: 32px; }
  .hero { height: 560px; min-height: 0; max-height: none; }
  .hero__content h1 { font-size: 42px; }
  .qc-steps { grid-template-columns: repeat(3, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .process__step:nth-child(3)::after { display: none; }
  .client-wall { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .layout-2col { grid-template-columns: 1fr; }
  .overview { grid-template-columns: 1fr; gap: 32px; }
  .overview__img-main { aspect-ratio: 16/9; }
  .quality__grid { grid-template-columns: 1fr; gap: 46px; }
  .quality__media img { aspect-ratio: 16/10; }
  .quality__media::before { transform: translate(-14px, 14px); }
  .sidebar { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
  .pd-grid { grid-template-columns: 1fr; }
  .pd-gallery { max-width: 460px; }
  .stats .container { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .showcase .about-slider__slide img { aspect-ratio: 16/10; }
  .showcase .about-slider__ctrl { top: 14px; right: 14px; }
  .showcase__card { flex-direction: column; align-items: flex-start; gap: 16px; padding: 50px 24px 20px; }
}

@media (max-width: 768px) {
  .section { padding: 52px 0; }
  .section-head h2 { font-size: 26px; }

  /* mobile nav */
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; top: 0; right: -100%; width: min(320px, 85vw); height: 100vh;
    background: #fff; box-shadow: -8px 0 30px rgba(0, 0, 0, .12); z-index: 1100;
    padding: 80px 0 40px; overflow-y: auto; transition: right .35s ease; margin-left: 0;
  }
  .main-nav.open { right: 0; }
  .main-nav > ul { flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav > ul > li > a { padding: 14px 26px; border-radius: 0; border-bottom: 1px solid var(--border); }
  .main-nav > ul > li > a.active::after { display: none; }
  .main-nav > ul > li > a.active { background: var(--bg-light); }
  .main-nav .has-sub > a::before { right: 24px; }
  .nav-sub {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border-top: 0; border-radius: 0; padding: 0;
    display: none; background: var(--bg-light);
  }
  .main-nav .has-sub.open .nav-sub { display: block; }
  .nav-sub a { padding: 11px 38px; }
  .nav-overlay {
    /* 必须低于粘性页头(1000)：菜单抽屉在页头内部，遮罩若高于页头会盖住抽屉导致无法点击 */
    position: fixed; inset: 0; background: rgba(8, 32, 64, .5); z-index: 999;
    opacity: 0; visibility: hidden; transition: opacity .3s;
  }
  .nav-overlay.show { opacity: 1; visibility: visible; }
  .navbar .btn--inquiry { display: none; }

  .hero { height: 480px; min-height: 0; max-height: none; }
  .hero__content h1 { font-size: 38px; }
  /* timeline: switch to left-aligned single column */
  .timeline::before { left: 14px; margin-left: 0; }
  .timeline__item, .timeline__item:nth-child(even) { width: 100%; margin-left: 0; padding: 0 0 34px 44px; text-align: left; }
  .timeline__item::after, .timeline__item:nth-child(even)::after { left: 10px; right: auto; }
  .cs__duo { grid-template-columns: 1fr; gap: 48px; }
  .cs__values li + li::before { margin: 0 14px; }
  .bs__row { grid-template-columns: 1fr; gap: 14px; padding: 36px 0; }
  .bs__lead { margin-bottom: 48px; }
  .hero__content p { font-size: 16px; }
  .hero__trust { display: none; }
  .hero__dots { bottom: 70px; right: 20px; }
  .stats { margin-top: -46px; }
  .stats .container { padding: 24px 18px; }
  .page-hero img { height: 220px; }
  .page-hero h1 { font-size: 28px; }
  /* partners */
  .partner-wall { gap: 16px; }
  .partner-wall__item { width: 160px; height: 84px; }
  .partner-wall__item img { max-height: 46px; max-width: 136px; }
}

@media (max-width: 560px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .client-wall { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .honor-slide { flex-basis: calc((100% - 22px) / 2); }
  .honor-slider__track { gap: 22px; }
  .honor-slider__btn { width: 38px; height: 38px; }
  .clients-global__globe { width: 300px; height: 300px; right: -130px; opacity: .3; }
  .logo-marquee__item { width: 150px; padding: 12px 14px; }
  .prod-row { gap: 12px; padding: 12px 14px; }
  .prod-row__img { width: 60px; height: 60px; }
  .prod-row__body h3 { font-size: 14.5px; }
  .prod-row__btn { padding: 7px 14px; font-size: 12.5px; }
  /* keep card layout intact on small screens */
  .prod-list--cards .prod-row { gap: 0; padding: 0; }
  .prod-list--cards .prod-row__img { width: 100%; height: auto; }
  .prod-list--cards .prod-row__body h3 { font-size: 14.5px; }
  .prod-list--cards .prod-row__btn { margin: 0 14px 14px; padding: 8px 0; font-size: 12.5px; }
  .footer-main { grid-template-columns: 1fr; }
  /* 手机端页脚厂区图铺满内容宽度；保持原始比例，不裁切、不影响PC端 */
  .footer-about img { display: block; width: 100%; max-width: 100%; height: auto; }
  .form-row { grid-template-columns: 1fr; }
  .cert-list { grid-template-columns: 1fr; }
  .hero { height: 440px; min-height: 0; max-height: none; }
  .hero__content h1 { font-size: 30px; }
  .check-list { grid-template-columns: 1fr; }
  .overview__media::before { transform: translate(-14px, 14px); }
  .overview--rev .overview__media::before { transform: translate(14px, 14px); }
  .overview__years strong { font-size: 34px; }
  .slide-panel { padding: 36px 18px; }
  .slide-panel h2 { font-size: 22px; margin-bottom: 16px; }
  .slide-panel p { font-size: 13.5px; }
  .chip { padding: 8px 16px; font-size: 13px; }
  .partner-row img { height: 38px; padding: 6px 10px; }
  .qc-steps { grid-template-columns: 1fr; gap: 12px; margin-top: 32px; }
  .process { grid-template-columns: 1fr 1fr; row-gap: 36px; }
  .process__step::after { display: none; }
  .strength-grid { gap: 12px 16px; }
  .strength-item { padding: 2px 0; }
  .strength-item strong { font-size: 23px; }
  .rich-text table { font-size: 13.5px; }
  .rich-text table th, .rich-text table td { padding: 10px 12px; }
  .stats__num { font-size: 32px; }
  .contact-form, .contact-info-card { padding: 26px 22px; }
  .pd-info h1 { font-size: 24px; }
  .pn-nav { grid-template-columns: 1fr; }
  .pn-nav .pn-next { text-align: left; }
}

/* ---------- Featured Topics page ---------- */
/* 新卡片加在 .topic-grid 最前面即显示在最上方，右上角编号与底部索引计数由 CSS 计数器自动生成 */
.topics-wrap { counter-reset: topic-card; }
.topic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.topic-card {
  position: relative; display: block; border-radius: 16px; overflow: hidden;
  aspect-ratio: 16/10; background: var(--navy); counter-increment: topic-card;
  box-shadow: 0 18px 46px rgba(12, 45, 87, .14);
  transition: transform .5s cubic-bezier(.22, .61, .36, 1), box-shadow .5s;
}
.topic-card:hover { transform: translateY(-5px); box-shadow: 0 30px 70px rgba(12, 45, 87, .24); }
.topic-card:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.topic-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s cubic-bezier(.22, .61, .36, 1), filter .8s; }
.topic-card:hover img { transform: scale(1.07); filter: brightness(1.06); }
/* hover 光泽扫过 */
.topic-card::before {
  content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, .13) 50%, transparent 58%);
  transform: translateX(-101%); transition: transform 1.1s ease;
}
.topic-card:hover::before { transform: translateX(101%); }
/* auto number Nº 01, 02, 03… */
.topic-card::after {
  content: "Nº " counter(topic-card, decimal-leading-zero);
  position: absolute; top: 18px; right: 26px; z-index: 2; padding-top: 8px;
  border-top: 2px solid rgba(255, 255, 255, .35);
  color: rgba(255, 255, 255, .72); font-family: Georgia, "Times New Roman", serif;
  font-style: italic; font-size: 14px; letter-spacing: 2px;
  text-shadow: 0 1px 6px rgba(6, 24, 48, .5);
}
/* optional NEW badge for the latest topic */
.topic-card__new {
  position: absolute; top: 18px; left: 22px; z-index: 2; background: var(--accent); color: #fff;
  font-size: 11px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
  padding: 5px 12px; border-radius: 4px; box-shadow: 0 6px 16px rgba(0, 0, 0, .25);
}
.topic-card__overlay {
  position: absolute; inset: 0; z-index: 1; display: flex; flex-direction: column; justify-content: flex-end;
  padding: 30px 34px; color: #fff;
  background: linear-gradient(180deg, rgba(8, 32, 64, .14) 0%, rgba(8, 32, 64, .3) 42%, rgba(8, 32, 64, .78) 74%, rgba(6, 24, 48, .95) 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .07);
}
.topic-card__label {
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 12px;
  color: #a8d34f; font-size: 11.5px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase;
  text-shadow: 0 1px 6px rgba(6, 24, 48, .6);
}
.topic-card__label::before { content: ""; width: 26px; height: 2px; background: var(--accent); transition: width .45s cubic-bezier(.22, .61, .36, 1); }
.topic-card:hover .topic-card__label::before { width: 42px; }
.topic-card__overlay h3 {
  color: #fff; font-family: Georgia, "Times New Roman", serif; font-size: 23px;
  letter-spacing: 0; margin-bottom: 8px; text-shadow: 0 2px 10px rgba(6, 24, 48, .55);
}
.topic-card__overlay p { color: rgba(214, 226, 240, .92); font-size: 14px; line-height: 1.65; margin-bottom: 18px; max-width: 520px; text-shadow: 0 1px 8px rgba(6, 24, 48, .5); }
.topic-card__more {
  display: inline-flex; align-items: center; gap: 12px; color: #fff;
  font-size: 12.5px; font-weight: 700; letter-spacing: 2.2px; text-transform: uppercase;
  text-shadow: 0 1px 6px rgba(6, 24, 48, .5);
}
.topic-card__arrow {
  display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px;
  border: 1px solid rgba(255, 255, 255, .5); border-radius: 50%; background: rgba(8, 32, 64, .25);
  transition: background .3s, border-color .3s, transform .3s;
}
.topic-card__arrow svg { width: 14px; height: 14px; fill: #fff; }
.topic-card:hover .topic-card__arrow { background: var(--accent); border-color: var(--accent); transform: translateX(5px); }

/* 最新专题（.topic-grid 里第一张卡）自动作为整幅"封面故事"，左深右浅的编辑排版；纯 CSS 实现，新增卡片无需改结构 */
@media (min-width: 901px) {
  .topic-card:first-child { grid-column: 1 / -1; aspect-ratio: 21/9; }
  .topic-card:first-child .topic-card__overlay {
    justify-content: center; padding: 48px 60px;
    background: linear-gradient(95deg, rgba(6, 24, 48, .94) 0%, rgba(8, 32, 64, .78) 36%, rgba(8, 32, 64, .3) 62%, rgba(8, 32, 64, .1) 100%);
  }
  .topic-card:first-child .topic-card__label { font-size: 12.5px; margin-bottom: 14px; }
  .topic-card:first-child .topic-card__overlay h3 { font-size: clamp(28px, 2.8vw, 38px); max-width: 620px; margin-bottom: 12px; }
  .topic-card:first-child .topic-card__overlay p { font-size: 15px; max-width: 560px; margin-bottom: 24px; }
}

@media (max-width: 900px) {
  .topic-grid { grid-template-columns: 1fr; gap: 20px; }
  .topic-card { aspect-ratio: 16/10; }
  .topic-card__overlay { padding: 24px 22px; }
  .topic-card__overlay h3 { font-size: 20px; }
  .topic-card::after { top: 12px; right: 18px; font-size: 12px; }
  .topic-card__new { top: 12px; left: 16px; }
}

/* ===== Topics 页质感升级 ===== */
/* 编辑风 masthead：多层渐变 + 点阵纹理 + 描边背景大字，不依赖封面图 */
.page-hero--editorial { overflow: hidden;
  background:
    radial-gradient(880px 460px at 88% -20%, rgba(77, 179, 232, .18), transparent 62%),
    radial-gradient(760px 520px at 4% 118%, rgba(0, 132, 204, .3), transparent 62%),
    linear-gradient(118deg, #081c3a 0%, #0c2d57 52%, #123e78 100%);
}
.page-hero--editorial::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(rgba(255, 255, 255, .08) 1px, transparent 1.5px),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.12'/%3E%3C/svg%3E");
  background-size: 24px 24px, 180px 180px; opacity: .45;
  animation: heroGridDrift 26s linear infinite;
}
@keyframes heroGridDrift { to { background-position: 24px 24px, 0 0; } }
/* 描边背景大字由标签上的 data-word 属性提供，如 data-word="PRODUCTS" */
.page-hero--editorial::after {
  content: attr(data-word); position: absolute; right: -1.5%; bottom: -9%;
  font-size: clamp(130px, 21vw, 280px); font-weight: 800; line-height: .8; letter-spacing: .03em;
  color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, .09);
  pointer-events: none;
}
.page-hero--editorial .container { position: relative; z-index: 1; padding-top: 88px; padding-bottom: 92px; }
.page-hero--editorial .kicker--light { color: var(--primary-light); }
.page-hero--editorial .kicker--light::before { background: var(--primary-light); }
.page-hero--editorial h1 {
  font-family: Georgia, "Times New Roman", serif; font-weight: 700;
  font-size: clamp(42px, 5.4vw, 64px); letter-spacing: 0; margin: 12px 0 16px;
}
.page-hero--editorial p { color: rgba(231, 239, 248, .8); font-size: 16.5px; line-height: 1.75; margin-top: 0; }
.page-hero__meta {
  display: flex; flex-wrap: wrap; row-gap: 10px; margin-top: 42px; padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, .16);
}
.page-hero__meta span {
  color: rgba(255, 255, 255, .58); font-size: 12px; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase; padding: 0 24px;
  border-left: 1px solid rgba(255, 255, 255, .22);
}
.page-hero__meta span:first-child { padding-left: 0; border-left: none; }

/* 分栏式标题区（编辑风） */
.section--tinted {
  position: relative;
  background: linear-gradient(180deg, #f8fafc 0%, #edf1f7 100%);
}
/* 纸张噪点纹理，消除纯色的"平"感 */
.section--tinted::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}
.section--tinted > .container { position: relative; z-index: 1; }
.section-head--split {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 48px;
  text-align: left; max-width: none; margin: 0 0 46px;
  padding-bottom: 28px; border-bottom: 1px solid #dde4ee;
}
.section-head--split h2 { margin-bottom: 0; }
.section-head--split > p {
  max-width: 400px; margin: 0; padding-left: 22px;
  border-left: 2px solid var(--accent); font-size: 14.5px; line-height: 1.75;
}

/* 底部索引行：数量自动生成 */
.topic-index { display: flex; align-items: center; gap: 22px; margin-top: 46px; }
.topic-index__line { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, #c6d2e0 30%, #c6d2e0 70%, transparent); }
.topic-index__text {
  color: var(--muted); font-size: 12px; font-weight: 600;
  letter-spacing: .22em; text-transform: uppercase; white-space: nowrap;
}
.topic-index__num::after { content: counter(topic-card, decimal-leading-zero); color: var(--primary); }

/* 卡片入场动效：JS 进入视口加 .is-in；结束后加 .anim-done 还原，避免压住 hover 过渡 */
html.js .topic-grid:not(.is-in) .topic-card { opacity: 0; }
.topic-grid.is-in .topic-card { animation: topicRise .8s cubic-bezier(.22, .61, .36, 1) both; }
.topic-grid.is-in .topic-card:nth-child(2) { animation-delay: .08s; }
.topic-grid.is-in .topic-card:nth-child(3) { animation-delay: .16s; }
.topic-grid.is-in .topic-card:nth-child(4) { animation-delay: .24s; }
.topic-grid.is-in .topic-card:nth-child(5) { animation-delay: .32s; }
.topic-grid.is-in .topic-card:nth-child(n+6) { animation-delay: .38s; }
.topic-grid.anim-done .topic-card { animation: none; opacity: 1; }
@keyframes topicRise { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: none; } }

@media (max-width: 860px) {
  .page-hero--editorial .container { padding-top: 60px; padding-bottom: 64px; }
  .page-hero--editorial::after { font-size: 34vw; right: -4%; bottom: -4%; }
  .page-hero__meta span { padding: 0 14px; letter-spacing: .14em; }
  .section-head--split { flex-direction: column; align-items: flex-start; gap: 14px; }
  .section-head--split > p { padding-left: 0; border-left: none; max-width: 640px; }
  .topic-index { margin-top: 34px; }
}
@media (prefers-reduced-motion: reduce) {
  html.js .topic-grid:not(.is-in) .topic-card { opacity: 1; }
  .topic-grid.is-in .topic-card { animation: none; }
  .page-hero--editorial::before { animation: none; }
}

/* ==========================================================================
   全站质感升级（2026-09，不动内容仅增强观感与动效）
   ========================================================================== */

/* ---------- 全局细节 ---------- */
::selection { background: rgba(0, 132, 204, .92); color: #fff; text-shadow: none; }
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: #eef2f7; }
::-webkit-scrollbar-thumb { background: #b9c8da; border-radius: 8px; border: 3px solid #eef2f7; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: #8fa6c0; }
/* 点击/触摸不显示浏览器默认焦点框（虚线框）；键盘 Tab 时由 :focus-visible 提供高亮 */
a:focus, button:focus { outline: none; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
/* 移动端点按高亮统一去除（部分国产浏览器/微信内置浏览器会对点过的链接画虚线框） */
a, button, input, textarea, select { -webkit-tap-highlight-color: transparent; }
body { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

/* 浅色区块加极轻纸张噪点，消除纯色的"平"感 */
.section--light { position: relative; }
.section--light::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .55;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.045'/%3E%3C/svg%3E");
}
.section--light > .container { position: relative; z-index: 1; }

/* ---------- 页头滚动态：阴影加深 + 高度微降 ---------- */
.site-header { transition: box-shadow .35s ease; }
.navbar { transition: height .3s ease; }
.site-header.is-scrolled { box-shadow: 0 10px 34px rgba(12, 45, 87, .16); }
.site-header.is-scrolled .navbar { height: 62px; }

/* 下拉箭头悬停翻转 */
.main-nav .has-sub > a::before { transition: transform .25s ease; }
@media (hover: hover) and (min-width: 769px) {
  .main-nav .has-sub:hover > a::before { transform: rotate(180deg); }
}

/* ---------- 首屏 / 内页头入场动效 ---------- */
@keyframes rvRise { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: none; } }
html.js .hero__content > * { animation: rvRise .9s var(--ease) both; }
html.js .hero__content > *:nth-child(2) { animation-delay: .12s; }
html.js .hero__content > *:nth-child(3) { animation-delay: .26s; }
html.js .hero__content > *:nth-child(4) { animation-delay: .42s; }
html.js .page-hero--editorial .container > * { animation: rvRise .8s var(--ease) both; }
html.js .page-hero--editorial .container > *:nth-child(2) { animation-delay: .1s; }
html.js .page-hero--editorial .container > *:nth-child(3) { animation-delay: .2s; }
html.js .page-hero--editorial .container > *:nth-child(4) { animation-delay: .32s; }

/* ---------- 全站滚动入场（JS 加 .rv / .rv-in，播完加 .rv-done 还原） ---------- */
html.js .rv { opacity: 0; }
html.js .rv.rv-in { animation: rvRise .75s var(--ease) both; animation-delay: var(--rv-d, 0s); }
html.js .rv.rv-done { animation: none; opacity: 1; }

/* ---------- 懒加载图片加载完成淡入（用 animation 避免覆盖各卡片 img 的 transform 过渡） ---------- */
html.js img[loading="lazy"]:not(.is-loaded) { opacity: 0; }
html.js img[loading="lazy"].is-loaded { animation: imgFadeIn .55s ease; }
@keyframes imgFadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ---------- 按钮光泽扫过 ---------- */
.btn { position: relative; overflow: hidden; }
.btn::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 55%; pointer-events: none;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, .22), transparent);
  transform: translateX(-130%) skewX(-18deg);
}
@media (hover: hover) {
  .btn:hover::before { transform: translateX(240%) skewX(-18deg); transition: transform .7s var(--ease); }
}

/* ---------- 卡片图片光泽扫过 ---------- */
.cat-card__img, .news-card__img, .cert-card__img { position: relative; }
.cat-card__img::before, .news-card__img::before, .cert-card__img::before, .product-card__img::before, .feature__img::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, .22) 50%, transparent 58%);
  transform: translateX(-101%);
}
@media (hover: hover) {
  .cat-card:hover .cat-card__img::before,
  .news-card:hover .news-card__img::before,
  .cert-card:hover .cert-card__img::before,
  .product-card:hover .product-card__img::before,
  .feature:hover .feature__img::before {
    transform: translateX(101%); transition: transform .9s var(--ease);
  }
}

/* ---------- 卡片与图标微交互（扁平化后仅保留细腻反馈） ---------- */
@media (hover: hover) {
  .quote-card:hover { border-top-color: var(--primary); }
}

/* ---------- 数据与氛围润色 ---------- */
.stats__num {
  background: linear-gradient(115deg, var(--primary) 20%, var(--accent-dark) 95%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-head h2 { letter-spacing: -.3px; }
.cta-band { position: relative; overflow: hidden; }
.cta-band::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(760px 320px at 50% -30%, rgba(77, 179, 232, .25), transparent 65%);
}
.cta-band .container { position: relative; z-index: 1; }
.site-footer {
  background:
    radial-gradient(900px 420px at 90% -20%, rgba(0, 132, 204, .25), transparent 62%),
    radial-gradient(700px 500px at -10% 110%, rgba(77, 179, 232, .14), transparent 60%),
    linear-gradient(180deg, #0a2447 0%, var(--navy) 100%);
}

/* ---------- 减弱动效偏好降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html.js .rv { opacity: 1; }
  html.js .rv.rv-in,
  html.js .hero__content > *,
  html.js .page-hero--editorial .container > *,
  .hero__slide.active img,
  html.js img[loading="lazy"].is-loaded { animation: none; }
}

/* ---------- 首页区块顺序：HTML/DOM 顺序 = 手机端视觉顺序（产品优先，利于 SEO 移动优先索引） ----------
   PC 端用 order 还原原布局：公司实力类区块（why/quality/warehouse）在产品类目之前 */
@media (min-width: 769px) {
  .home-main { display: flex; flex-direction: column; }
  .home-main > .hero { order: 1; }
  .stats { order: 2; }
  .home-why { order: 3; }
  .home-quality { order: 4; }
  .home-warehouse { order: 5; }
  .home-cats { order: 6; }
  .home-products { order: 7; }
  .home-testi { order: 8; }
  .home-news { order: 9; }
}

/* ---------- 首页手机端内容压缩：双列紧凑网格 + 隐藏次要描述文字，缩短滑动距离 ---------- */
@media (max-width: 560px) {
  .home-main .grid-3, .home-main .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .home-testi .grid-3 { grid-template-columns: 1fr; } /* 客户评价为长文本引言，保持单列 */
}
@media (max-width: 768px) {
  .home-main .section { padding: 56px 0; }
  .home-main .section-head { margin-bottom: 26px; }
  .home-cats .cat-card__body p { display: none; } /* 类目卡：只留图+标题+入口 */
  .home-cats .cat-card__body { padding: 14px 16px 16px; }
  .home-news .news-card__body p { display: none; } /* 新闻卡：隐藏摘要 */
}

/* 首页新闻区手机端：卡片改为横排行式列表（左图右文），紧凑易扫读 */
@media (max-width: 560px) {
  .home-news .grid-3 { grid-template-columns: 1fr; gap: 0; }
  .home-news .news-card {
    flex-direction: row; align-items: center; gap: 14px;
    background: none; box-shadow: none; border-radius: 0;
    padding: 14px 0; border-bottom: 1px solid #e3e9f2;
  }
  .home-news .news-card:hover { transform: none; box-shadow: none; }
  .home-news .news-card:last-child { border-bottom: 0; }
  .home-news .news-card__img { flex: 0 0 108px; width: 108px; aspect-ratio: 4 / 3; border-radius: 8px; }
  .home-news .news-card__body { padding: 0; }
  .home-news .news-card__date { margin-bottom: 4px; }
  .home-news .news-card__body h3 {
    font-size: 15px; margin: 0; line-height: 1.45;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  }
}

/* 产品详情页 Related Products 手机端：双列紧凑网格，避免 4 张巨型卡片单列堆叠 */
@media (max-width: 560px) {
  .related-products .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .related-products .product-card__body { padding: 12px 14px 14px; }
  .related-products .product-card__body h3 { font-size: 14.5px; line-height: 1.35; }
  .related-products .product-card__cas { font-size: 11px; }
}

/* 合作伙伴 logo 墙手机端：两列网格，格子统一、logo 等比居中对齐 */
@media (max-width: 768px) {
  .partner-wall { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; padding: 4px 0 0; }
  .partner-wall__item { width: auto; height: 96px; }
  .partner-wall__item img { max-height: 54px; max-width: 84%; }
}
@media (max-width: 400px) {
  .partner-wall__item { height: 84px; }
  .partner-wall__item img { max-height: 46px; }
}

/* 页脚手机端：两个链接栏目改为双列网格，缩短页脚高度 */
@media (max-width: 768px) {
  .footer-main { padding: 48px 24px 32px; gap: 30px; }
  .site-footer h4 { margin-bottom: 14px; }
  .footer-main ul.footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; }
  .footer-main ul.footer-links li { margin-bottom: 12px; }
}