@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin-ext-400-normal.woff2") format("woff2");
  unicode-range: U+0100-024F;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-cyrillic-400-normal.woff2") format("woff2");
  unicode-range: U+0400-052F;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-cyrillic-ext-400-normal.woff2") format("woff2");
  unicode-range: U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin-ext-600-normal.woff2") format("woff2");
  unicode-range: U+0100-024F;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-cyrillic-600-normal.woff2") format("woff2");
  unicode-range: U+0400-052F;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-cyrillic-ext-600-normal.woff2") format("woff2");
  unicode-range: U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin-700-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin-ext-700-normal.woff2") format("woff2");
  unicode-range: U+0100-024F;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-cyrillic-700-normal.woff2") format("woff2");
  unicode-range: U+0400-052F;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-cyrillic-ext-700-normal.woff2") format("woff2");
  unicode-range: U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F;
}

:root {
  /* ===== Bossard 蓝调精品工业 · 色彩 token ===== */
  --brand: #007ac3;          /* 品牌蓝 / 主 CTA */
  --brand-hover: #0a6aa8;    /* CTA hover */
  --brand-deep: #00314e;     /* 深标题蓝 / 区块强调 */
  --ink-blue: #001827;       /* 页脚近黑蓝 */
  --brand-subtle: #cce4f3;   /* 浅蓝色块 tint */

  --text: #333333;           /* 正文深灰 */
  --ink: #111827;            /* 强对比文字(保留) */
  --paper: #ffffff;          /* 纯白底 */
  --surface-alt: #f6f8f9;    /* 卡片/软面板浅底 */
  --panel: #ffffff;
  --line: #cfd6dd;          /* 分隔线(较原 #d7dde3 加深一档,边界更清晰) */
  --line-soft: #e7ecf0;     /* 表格行内细分隔,弱于 --line */
  --muted: #5b6670;

  --accent: #d89b22;         /* 金色,降级:仅小面积高亮,禁用于 CTA 背景 */
  --ok: #2f6f4e;
  --danger: #9a3412;

  /* 旧名别名(过渡期保留,避免大规模类名改动) */
  --graphite: var(--ink-blue);
  --steel: var(--brand-deep);
  --steel-dark: var(--brand-deep);
  --accent-dark: #9b6b10;

  /* ===== 字号 scale(4 倍层级:正文 16 ↔ 主标 64) ===== */
  --fs-body: 16px;
  --fs-body-lg: 18px;
  --fs-h3: 22px;
  --fs-h2: 44px;
  --fs-h1: 64px;
  --fs-small: 14px;

  /* ===== 间距 scale(统一节奏,替换零散魔法数字) ===== */
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --space-64: 64px;
  --space-section: 86px;   /* section 纵向留白基准 */

  /* ===== 间距 / 圆角 / 阴影 ===== */
  --radius: 8px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --shadow: 0 18px 45px rgba(27, 39, 51, 0.12);
  --shadow-sm: 0 8px 18px rgba(27, 39, 51, 0.08);
  --shadow-lg: 0 30px 65px rgba(0, 0, 0, 0.24);
  --hero-title-max: 540px;

  font-family: "IBM Plex Sans", Arial, "Helvetica Neue", Helvetica, sans-serif;
}

/* Dark mode 已暂时移除（备份在 backup/dark-mode 分支，全局部署完成后恢复） */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 0;
  background: transparent;
  backdrop-filter: none;
}

.nav-shell {
  width: min(1220px, calc(100% - 48px));
  height: 58px;
  margin: 8px auto;
  padding: 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #101719;
  font-weight: 900;
  letter-spacing: 0.1em;
  min-width: 0;
  flex-shrink: 1;
}

.brand-logo {
  width: 50px;
  height: 50px;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand small {
  display: block;
  color: rgba(16, 23, 25, 0.62);
  font-size: 11px;
  letter-spacing: 0.12em;
  margin-top: -3px;
}

.brand span:last-child {
  min-width: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  color: rgba(16, 23, 25, 0.78);
  font-weight: 650;
}

.nav-links a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.nav-links .nav-cta {
  padding: 8px 14px;
  border: 1px solid rgba(0, 122, 195, 0.22);
  border-radius: var(--radius-pill);
  color: var(--brand-deep);
  background: rgba(0, 122, 195, 0.08);
  box-shadow: 0 8px 18px rgba(0, 49, 78, 0.08);
}

.nav-links .nav-cta:hover,
.nav-links .nav-cta[aria-current="page"] {
  border-color: rgba(0, 122, 195, 0.34);
  color: var(--brand-deep);
  background: rgba(0, 122, 195, 0.14);
}

.nav-links a[aria-current="page"],
.nav-links a:hover {
  color: #101719;
  border-color: var(--accent);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 999px;
  padding: 9px 12px;
  color: var(--graphite);
  align-items: center;
  gap: 8px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  flex: 0 0 auto;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.nav-toggle-icon {
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-icon::before {
  top: -5px;
}

.nav-toggle-icon::after {
  top: 5px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  min-height: 44px;
  padding: 11px 18px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--brand);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--brand-hover);
}

.btn-secondary {
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.btn-light {
  color: var(--steel-dark);
  border-color: var(--line);
  background: var(--panel);
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  background:
    linear-gradient(115deg, rgba(31, 41, 51, 0.98), rgba(34, 57, 72, 0.95)),
    radial-gradient(circle at 80% 20%, rgba(216, 155, 34, 0.22), transparent 34%);
  color: #ffffff;
}

.hero-inner {
  min-height: min(680px, 82dvh);
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(340px, 0.78fr);
  align-items: center;
  gap: 46px;
  padding: 58px 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #f2c766;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
}

h1 {
  max-width: 760px;
  font-size: clamp(38px, 4.4vw, 64px);
  letter-spacing: 0;
}

h1 span {
  display: block;
}

h2 {
  font-size: clamp(30px, 3vw, 44px);
}

h3 {
  font-size: clamp(22px, 2.4vw, 32px);
}

.hero p {
  max-width: 58ch;
  margin: 22px 0 0;
  color: #d6dde4;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-visual {
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
  box-shadow: 0 30px 65px rgba(0, 0, 0, 0.24);
}

.hero-visual img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  background: #e9edf1;
}

.hero-visual-caption {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(255, 255, 255, 0.14);
}

.hero-visual-caption span {
  padding: 16px;
  background: rgba(31, 41, 51, 0.86);
  color: #e6edf3;
  font-size: 13px;
}

.section {
  padding: var(--space-section) 0;
}

.section.dark {
  color: #ffffff;
  background: var(--graphite);
}

/* steel 浅灰区块:顶部细线分隔,消除与相邻白色 section 的硬切 */
.section.steel {
  background: #e9eef1;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-head p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.dark .section-head p {
  color: #cbd5df;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.metric {
  min-height: 126px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.metric strong {
  display: block;
  color: var(--steel-dark);
  font-size: 24px;
  line-height: 1;
}

.metric span {
  display: block;
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}
/* 6 卡布局：桌面 3 列（3×2），与首页/产品页拆分 Square&Custom 后使用 */
.product-grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
/* 4 卡布局：首页 Washer Range 四个垫圈系列一行排列 */
.product-grid.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.product-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

/* 整卡可点击版（首页：a.product-card），补交互态视觉提示 */
a.product-card {
  cursor: pointer;
  color: inherit;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}
a.product-card:hover {
  transform: translateY(-3px);
  border-color: var(--brand);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
}
a.product-card:hover h3 {
  color: var(--brand);
}

.product-card img {
  width: 100%;
  height: 150px;
  object-fit: contain;
  padding: var(--space-16);
  background: #e8f1f7;
}


/* 产品卡标题统一字号:全局 h3 偏大且长短标题换行后视觉不齐,此处收敛 */
.product-card-body h3,
.product-card-body h2 {
  font-size: 18px;
  line-height: 1.25;
}

/* 暂无产品图时的占位块（与 img 同高，居中显示标准号，避免裂图/塌陷）*/
.card-img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 150px;
  background: linear-gradient(135deg, #eef2f5, #dde6ea);
  color: var(--brand-deep);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.04em;
}

.product-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;                 /* 撑满剩余高度,把底部按钮压到同一水平线 */
  padding: var(--space-16);
}

.product-card p {
  color: var(--muted);
  font-size: 14px;
}

/* 卡片底部 CTA:不同描述行数下按钮始终贴底对齐 */
.product-card-body .btn {
  margin-top: auto;
  width: 100%;
}

.product-card-body h3 + p,
.product-card-body h2 + p {
  margin-bottom: var(--space-16);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  align-items: center;
  gap: 42px;
}

.split img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-height: 430px;
  object-fit: cover;
}

.proof-list {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
}

.proof-item {
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  background: var(--panel);
  color: var(--graphite);
}

.dark .proof-item {
  background: rgba(255, 255, 255, 0.08);
  color: #eef2f6;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
  font-variant-numeric: tabular-nums;   /* 数字等宽,列与列对齐更整齐 */
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--steel-dark);
  background: #edf2f5;
  font-size: 13px;
}

td {
  color: var(--graphite);
}

/* 斑马纹:偶数行浅底,长尺寸表更易逐行扫读 */
tbody tr:nth-child(even) td {
  background: var(--surface-alt);
}

tr:last-child td {
  border-bottom: 0;
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 56px;
  color: #101719;
  background:
    radial-gradient(circle at 82% 10%, rgba(216, 155, 34, 0.18), transparent 26%),
    radial-gradient(circle at 18% 12%, rgba(163, 187, 184, 0.42), transparent 28%),
    linear-gradient(135deg, #eef4f2 0%, #d8e4e1 48%, #b7c8c8 100%);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(103deg, rgba(18, 38, 42, 0.055) 0 1px, transparent 1px 9px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.28), transparent 35%, rgba(9, 15, 17, 0.08));
  opacity: 0.78;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  max-width: 850px;
  color: #101719;
}

.page-hero p {
  max-width: 66ch;
  color: rgba(16, 23, 25, 0.76);
  font-size: 18px;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.split .spec-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.spec {
  border-top: 4px solid var(--steel);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px;
}

.spec img {
  width: 100%;
  height: 120px;
  object-fit: contain;
}

.spec span {
  color: var(--muted);
  font-size: 13px;
}

/* 搭扣产品线:一行 2 个、共 3 行，图更大；By Drawing 跨整行纯文字 */
.spec-grid-2col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.spec-grid-2col .spec img {
  height: 200px;
}
.spec-grid-2col .spec-full {
  grid-column: 1 / -1;    /* 第 3 行整行 */
}
.spec-grid-2col .spec h3 {
  font-size: 20px;
  line-height: 1.2;
}

.process {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

/* 横向带箭头工艺流程图（9 步），桌面横排可横向滚动，移动端转纵向 */
/* Production 工艺流程：CSS Grid 固定 4 列等宽，卡片永远一样大，无箭头 */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.process-card {
  background: var(--brand-deep);
  border-radius: 10px;
  padding: 20px 22px;
  min-height: 84px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.process-card strong {
  color: #fff;
  font-size: 17px;
  margin-bottom: 6px;
}

.process-card span {
  color: #9fb6cc;
  font-size: 14px;
}

.process-card.heat {
  border-top: 3px solid var(--accent);
}

.process-card .as-req {
  color: var(--accent);
  font-style: italic;
}

@media (max-width: 900px) {
  .process-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .process-grid { grid-template-columns: 1fr; }
}

.process-flow {
  display: flex;
  flex-wrap: wrap;             /* 自动折行，去横向滚动条 */
  align-items: stretch;
  row-gap: 28px;
}

.flow-step {
  position: relative;
  flex: 1 1 calc(20% - 26px);  /* 桌面每行 5 个(10 步排 5+5) */
  min-width: 130px;
  min-height: 92px;
  margin-right: 26px;          /* 给箭头留位 */
  padding: var(--space-12);
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #ffffff;
  background: var(--brand-deep);
  border-radius: var(--radius);
}

.flow-step:last-child {
  margin-right: 0;
}

/* 步骤之间的右向箭头 */
.flow-step:not(:last-child)::after {
  content: "›";
  position: absolute;
  right: -22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 26px;
  font-weight: 700;
  color: var(--brand);
  z-index: 2;
  line-height: 1;
}

.flow-step strong {
  display: block;
  font-size: 14px;
  line-height: 1.2;
}

.flow-step span {
  display: block;
  margin-top: 6px;
  color: #c8d4df;
  font-size: 12px;
}

/* 桌面每行 5 个，行末(第5/10个)右箭头悬空 → 隐藏 */
@media (min-width: 821px) {
  .flow-step:nth-child(5n) {
    margin-right: 0;
  }

  .flow-step:nth-child(5n)::after {
    display: none;
  }
}

/* ===== Quality 质量控制流程图：主流程 + 异常旁注 ===== */
.qc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px 56px;            /* 行距 28 / 列距 56(留箭头位) */
  margin-top: 24px;
}

.qc-card {
  position: relative;
  padding: 22px 24px;
  border: 1px solid;
  border-radius: 12px;
  min-height: 78px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.qc-card strong {
  font-size: 19px;
  font-weight: 700;
}

.qc-card span {
  margin-top: 6px;
  font-size: 14px;
}

/* 蓝(检验关) / 绿(追溯) / 琥珀(异常) 浅色卡 */
.qc-blue  { background: #e8f1fb; border-color: #bcd6f0; color: #1c4e7a; }
.qc-blue span  { color: #3a6ea0; }
.qc-green { background: #e7f4ec; border-color: #b6dcc4; color: #1f5b3a; }
.qc-green span { color: #3a7a55; }
.qc-amber { background: #fcf0db; border-color: #e6c887; color: #8a5a12; }
.qc-amber span { color: #6f4a10; }

/* 同行右向箭头(IQC→First, First→IPQC, IPQC→FQC) */
.qc-ar::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -40px;
  width: 24px;
  height: 2px;
  background: #8a9bb0;
  transform: translateY(-50%);
}
.qc-ar::before {
  content: "";
  position: absolute;
  top: 50%;
  right: -18px;
  width: 0;
  height: 0;
  border-left: 7px solid #8a9bb0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transform: translateY(-50%);
}

/* FQC → Traceability：底部居中竖线 + 朝下箭头 */
.qc-adown::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -22px;
  width: 2px;
  height: 16px;
  background: #8a9bb0;
  transform: translateX(-50%);
}
.qc-adown::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -22px;
  width: 0;
  height: 0;
  border-top: 7px solid #8a9bb0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  transform: translateX(-50%);
}

.qc-trace {
  grid-column: 4;
}

.qc-side-note {
  max-width: 520px;
  margin-top: 16px;
}

.qc-docs {
  margin: 22px 0 0;
  text-align: right;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 820px) {
  .qc-grid {
    grid-template-columns: 1fr;       /* 移动端单列 */
    gap: 16px;
  }
  /* 单列时去掉所有连接线箭头(竖排卡片直接堆叠) */
  .qc-ar::after, .qc-ar::before,
  .qc-adown::after, .qc-adown::before {
    display: none;
  }
  .qc-docs { text-align: left; }
}

/* 热处理"按需"分支：金色顶边 + 标注 */
.flow-step-branch {
  background: linear-gradient(180deg, var(--brand-deep), #0a3a52);
  border-top: 3px solid var(--accent);
}

.flow-step-branch span {
  color: #f2c766;
  font-weight: 700;
  font-style: italic;
}

@media (max-width: 820px) {
  /* 移动端：流程图转纵向，箭头朝下 */
  .process-flow {
    flex-direction: column;
    overflow-x: visible;
  }
  .flow-step {
    flex: 0 0 auto;
    margin-right: 0;
    margin-bottom: 24px;
  }
  .flow-step:not(:last-child)::after {
    content: "⌄";
    right: 50%;
    top: auto;
    bottom: -22px;
    transform: translateX(50%);
  }
}

.process-step {
  min-height: 98px;
  padding: 16px;
  color: #ffffff;
  background: var(--steel-dark);
  border-radius: var(--radius);
  position: relative;
}

.process-step strong {
  display: block;
}

.process-step span {
  color: #c8d4df;
  font-size: 13px;
}

.message-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 28px;
  align-items: start;
}

.rfq-optional {
  margin: 14px 0;
  border: 1px solid rgba(0, 49, 78, 0.12);
  border-radius: var(--radius);
  background: rgba(0, 122, 195, 0.04);
}

.rfq-optional > summary {
  padding: 13px 16px;
  color: var(--brand-deep);
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.rfq-optional .form-grid {
  padding: 0 16px 16px;
}

form {
  display: grid;
  gap: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field.full {
  grid-column: 1 / -1;
}

.field {
  display: grid;
  gap: 7px;
}

label {
  font-weight: 700;
  color: var(--graphite);
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #aeb9c3;
  border-radius: var(--radius);
  padding: 12px 13px;
  color: var(--ink);
  background: #ffffff;
  font: inherit;
}

textarea {
  min-height: 130px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(0, 122, 195, 0.35);
  border-color: var(--brand);
}

.helper {
  color: var(--muted);
  font-size: 13px;
}

.notice {
  border: 1px solid #b6c7b9;
  border-left: 4px solid var(--ok);
  border-radius: var(--radius);
  background: #eef7f0;
  padding: 16px;
  color: #244d36;
}

.review-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 20px;
}

.review-panel[hidden] {
  display: none;
}

.bot-field {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.review-panel h2 {
  font-size: 24px;
  margin-bottom: 14px;
}

.review-panel dl,
.inbox-card dl {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 8px 16px;
  margin: 0;
}

.review-panel dt,
.inbox-card dt {
  color: var(--muted);
  font-weight: 700;
}

.review-panel dd,
.inbox-card dd {
  margin: 0;
  color: var(--graphite);
}

.review-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.inbox-list {
  display: grid;
  gap: 16px;
  margin-bottom: 24px;
}

.inbox-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px;
}

.inbox-card h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.site-footer {
  padding: 42px 0;
  color: #dce4eb;
  background: #151d24;
}

.footer-legal {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(184, 196, 206, 0.18);
  color: #93a3b1;
  font-size: 13px;
}

/* ===== 四列 footer ===== */
.footer-cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  gap: 32px;
}

.footer-col h3 {
  margin: 0 0 14px;
  color: var(--accent);          /* 金色列标题 */
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-col a,
.footer-col p {
  display: block;
  margin: 9px 0;
  color: #b8c4ce;
  font-size: 14px;
  line-height: 1.5;
}

.footer-col a:hover {
  color: #ffffff;
}

/* 列1 品牌 */
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.06em;
  color: #ffffff;
}

.footer-logo img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.footer-brand p {
  max-width: 34ch;
  color: #93a3b1;
}

/* 列4 联系：图标 + 文字 */
.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: 9px;
}

.footer-contact .fc-ic {
  flex: 0 0 auto;
  font-size: 15px;
  line-height: 1.5;
}

@media (max-width: 820px) {
  .footer-cols {
    grid-template-columns: 1fr 1fr;   /* 平板 2 列 */
    gap: 28px;
  }
}

@media (max-width: 560px) {
  .footer-cols {
    grid-template-columns: 1fr;       /* 手机单列堆叠 */
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

.footer-grid a,
.footer-grid p {
  color: #b8c4ce;
  margin: 8px 0;
}

.footer-grid h3 {
  color: #ffffff;
  font-size: 18px;
}

.risk-note {
  color: var(--muted);
  font-size: 13px;
  margin-top: 12px;
}

.product-detail-section {
  background: #f4f7f8;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.product-detail {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 14px 34px rgba(27, 39, 51, 0.07);
  overflow: hidden;
}

.product-detail h3 {
  padding: 20px 20px 0;
  color: var(--steel-dark);
}

.spec-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 20px 18px;
}

.spec-chips span {
  border: 1px solid rgba(49, 84, 111, 0.2);
  border-radius: 999px;
  background: #eef4f6;
  color: #274354;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
}

.product-detail table {
  min-width: 0;
  border-top: 1px solid var(--line);
}

.product-detail th,
.product-detail td {
  padding: 11px 14px;
  font-size: 13px;
}

.product-detail th {
  width: 138px;
  background: #edf3f5;
}

@media (max-width: 1080px) {
  .metric-grid,
  .product-grid,
  .spec-grid,
  .process {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-inner,
  .split,
  .message-panel {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    min-height: auto;
    padding: 56px 0;
  }
}

@media (max-width: 820px) {
  .product-detail-grid {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: 64px 0 42px;
  }

  .page-hero p {
    font-size: 16px;
  }

  .nav-shell {
    width: calc(100vw - 48px);
    max-width: calc(100vw - 48px);
    height: 60px;
    margin-top: 9px;
    gap: 10px;
    padding: 0 10px;
  }

  .brand-logo {
    width: 42px;
    height: 42px;
  }

  .nav-toggle {
    display: inline-flex;
    min-height: 42px;
    border-color: var(--steel-dark);
    background: var(--steel-dark);
    color: #ffffff;
    box-shadow: 0 8px 18px rgba(27, 39, 51, 0.16);
  }

  .nav-links {
    position: absolute;
    left: 24px;
    right: 24px;
    top: 76px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
  }

  .nav-links a:last-child {
    border-bottom: 0;
  }

  .hero-visual img {
    height: 230px;
  }

  .form-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .review-panel dl,
  .inbox-card dl {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .spec-grid-2col {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 31px;
    line-height: 1.03;
    max-width: 100%;
  }

  .brand {
    letter-spacing: 0.04em;
    max-width: calc(100% - 96px);
  }

  .brand small {
    font-size: 10px;
  }

  .brand-logo {
    width: 34px;
    height: 34px;
  }

  .hero-visual-caption {
    display: none;
  }

  .metric-grid,
  .product-grid,
  .spec-grid,
  .process {
    grid-template-columns: 1fr;
  }

  .nav-shell,
  .container {
    width: min(100% - 48px, 1180px);
  }

  .section {
    padding: 64px 0;
  }

  .hero-actions {
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
  }

  .btn {
    width: 100%;
    min-height: 40px;
    padding: 9px 14px;
  }

  .hero p,
  .hero-actions,
  .hero-visual {
    max-width: 330px;
  }

  .hero-inner {
    gap: 22px;
    padding: 34px 0 30px;
  }

  .eyebrow {
    font-size: 10.5px;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
  }

  .eyebrow::before {
    width: 18px;
  }

  .hero p {
    margin-top: 16px;
    font-size: 15px;
  }

  .hero-visual img {
    height: 136px;
    object-fit: contain;
  }
}

@media (max-width: 520px) {
  .nav-toggle {
    width: 42px;
    height: 42px;
    justify-content: center;
    padding: 0;
    flex: 0 0 42px;
  }

  .nav-toggle span:last-child {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }
}

.home-page {
  background: #eef2f4;
}

.home-hero {
  position: relative;
  min-height: min(720px, 84dvh);   /* 高度让数据条进首屏且与按钮组拉开间距(不重叠) */
  overflow: hidden;
  color: #101719;
  background:
    radial-gradient(circle at 54% 32%, rgba(225, 238, 236, 0.9), transparent 26%),
    radial-gradient(circle at 86% 18%, rgba(114, 151, 157, 0.22), transparent 30%),
    radial-gradient(circle at 20% 28%, rgba(205, 220, 216, 0.58), transparent 34%),
    linear-gradient(140deg, #d8e3e1 0%, #b8cbc9 38%, #738b8b 58%, #111719 100%);
}

.home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(103deg, rgba(255, 255, 255, 0.28) 0 1px, transparent 1px 9px),
    repeating-linear-gradient(0deg, rgba(13, 23, 26, 0.055) 0 1px, transparent 1px 6px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.22), transparent 24%, transparent 78%, rgba(0, 0, 0, 0.12));
  mix-blend-mode: overlay;
  opacity: 0.64;
}

.home-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.34), transparent 28%, rgba(5, 8, 10, 0.68)),
    radial-gradient(ellipse at center, transparent 42%, rgba(4, 8, 10, 0.54) 100%);
}

.home-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26, 46, 50, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 46, 50, 0.08) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: radial-gradient(circle at center, black, transparent 72%);
  opacity: 0.26;
}

.home-hero-inner {
  position: relative;
  z-index: 2;
  min-height: clamp(672px, 84dvh, 720px);
}

.home-hero-slides,
.home-hero-slide {
  position: absolute;
  inset: 0;
}

.home-hero-slide {
  opacity: 0;
  visibility: hidden;
  transition: opacity 680ms ease, visibility 680ms ease;
}

.home-hero-slide.is-active {
  opacity: 1;
  visibility: visible;
}

.home-hero-slide:not(.is-active) {
  pointer-events: none;
}

.home-hero-copy {
  position: absolute;
  z-index: 8;
  top: clamp(124px, 15vh, 150px);
  left: clamp(0px, 1.2vw, 18px);
  width: min(540px, calc(100% - 40px));
  text-align: left;
}

.home-hero-copy .eyebrow {
  color: #2c4c49;
  margin-bottom: 14px;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.3);
}

.home-hero h1,
.home-hero h2 {
  max-width: 560px;
  color: #101719;
  font-size: clamp(40px, 4.1vw, 64px);
  line-height: 1.02;
  letter-spacing: 0;
  text-wrap: balance;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.38), 0 22px 60px rgba(255, 255, 255, 0.16);
}

.home-hero p {
  max-width: 58ch;
  margin: 20px 0 0;
  color: rgba(7, 12, 14, 0.9);
  background: transparent;
  border: 0;
  padding: 4px 0;
  font-size: 17px;
  line-height: 1.55;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
}

.home-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.home-hero .btn {
  min-width: 164px;
  border-radius: 6px;
}

.home-hero .btn-secondary {
  color: #0d2230;
  border-color: rgba(13, 34, 48, 0.55);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 8px 22px rgba(13, 34, 48, 0.16);
  backdrop-filter: blur(10px);
}

.home-hero .btn-secondary:hover {
  background: #ffffff;
  border-color: var(--brand);
  color: var(--brand-deep);
}

.home-hero-monogram {
  position: absolute;
  z-index: 2;
  left: 58%;
  top: clamp(176px, 24vh, 230px);
  transform: translateX(-50%);
  color: rgba(239, 248, 245, 0.28);
  font-size: clamp(230px, 28vw, 470px);
  font-weight: 900;
  line-height: 0.8;
  letter-spacing: -0.09em;
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.14),
    0 48px 96px rgba(0, 0, 0, 0.34);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

.home-hero-stage {
  position: absolute;
  z-index: 4;
  pointer-events: none;
}

.home-hero-stage::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 9%;
  width: 78%;
  height: 17%;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.58), transparent 70%);
  filter: blur(17px);
}

.home-hero-stage img {
  position: relative;
  width: 100%;
}

.home-hero-stage-main {
  left: 64%;
  bottom: -170px;
  width: min(68vw, 860px);
  transform: translateX(-50%);
}

.home-hero-stage-main img {
  -webkit-mask-image: linear-gradient(to bottom, transparent 0 27%, rgba(0, 0, 0, 0.72) 33%, #000 40%);
  mask-image: linear-gradient(to bottom, transparent 0 27%, rgba(0, 0, 0, 0.72) 33%, #000 40%);
  filter: drop-shadow(0 58px 78px rgba(0, 0, 0, 0.62)) drop-shadow(0 0 54px rgba(170, 202, 194, 0.2));
}

.home-hero-stage-product,
.home-hero-stage-factory {
  left: 66%;
  bottom: 132px;
  width: min(42vw, 620px);
  transform: translateX(-50%);
}

.home-hero-stage-product img,
.home-hero-stage-factory img {
  height: min(38vh, 360px);
  object-fit: contain;
  border: 1px solid rgba(225, 238, 235, 0.2);
  border-radius: 10px;
  background:
    radial-gradient(circle at 50% 42%, rgba(236, 243, 241, 0.24), transparent 58%),
    rgba(8, 14, 16, 0.18);
  box-shadow: 0 38px 100px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(8px);
}

.home-hero-stage-factory {
  width: min(50vw, 760px);
}

.home-hero-stage-factory img {
  object-fit: cover;
  opacity: 0.86;
}

.home-hero-slide-factory::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, rgba(230, 239, 237, 0.34), transparent 42%, rgba(9, 13, 15, 0.32));
}

.home-hero-metrics {
  position: absolute;
  z-index: 9;
  left: 50%;
  bottom: 26px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  width: min(1080px, calc(100% - 64px));
  transform: translateX(-50%);
  border: 1px solid rgba(221, 235, 232, 0.14);
  border-radius: 10px;
  background: rgba(9, 14, 16, 0.34);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(12px);
}

.home-hero-metrics span {
  min-height: 54px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.04);
}

.home-hero-metrics strong {
  display: block;
  color: #f7f4ed;
  font-size: clamp(19px, 2vw, 28px);
  line-height: 1;
}

.home-hero-metrics small {
  display: block;
  margin-top: 8px;
  color: rgba(232, 240, 239, 0.68);
  font-size: 12px;
}

.home-hero-controls {
  position: absolute;
  z-index: 10;
  left: 0;
  right: 0;
  bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  pointer-events: none;
}

.home-hero-arrow,
.home-hero-dots button {
  pointer-events: auto;
}

.home-hero-arrow {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(241, 246, 245, 0.24);
  border-radius: 999px;
  color: rgba(245, 248, 247, 0.88);
  background: rgba(7, 12, 14, 0.3);
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.home-hero-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.home-hero-dots button {
  width: 36px;
  height: 3px;
  border: 0;
  border-radius: 999px;
  background: rgba(245, 248, 247, 0.34);
  cursor: pointer;
}

.home-hero-dots button.is-active {
  background: var(--accent);
}

.home-product-peek {
  padding: 30px 0 42px;
  background: #eef2f4;
}

.home-product-peek .eyebrow {
  color: var(--accent-dark);
}

.home-product-peek-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.home-product-peek-grid a {
  min-height: 118px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.76);
  padding: 18px;
  box-shadow: 0 12px 28px rgba(27, 39, 51, 0.06);
}

.home-product-peek-grid strong {
  display: block;
  color: #1e3444;
  font-size: 18px;
}

.home-product-peek-grid span {
  display: block;
  margin-top: 8px;
  color: #607080;
  font-size: 13px;
  line-height: 1.45;
}

@media (prefers-reduced-motion: reduce) {
  .home-hero-slide {
    transition: none;
  }
}

@media (max-width: 1080px) {
  .home-hero-copy {
    left: 0;
    width: min(560px, calc(100% - 36px));
  }

  .home-hero h1,
  .home-hero h2 {
    font-size: clamp(38px, 5.8vw, 58px);
  }

  .home-hero-stage-main {
    left: 60%;
    width: min(88vw, 860px);
  }

  .home-hero-stage-product,
  .home-hero-stage-factory {
    left: 68%;
    width: min(48vw, 560px);
  }

  .home-product-peek-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 820px) {
  .home-hero {
    min-height: 760px;
  }

  .home-hero-inner {
    min-height: 760px;
  }

  .home-hero-copy {
    top: 100px;
    left: 50%;
    width: min(100% - 28px, 420px);
    transform: translateX(-50%);
    text-align: center;
  }

  .home-hero-copy .eyebrow {
    justify-content: center;
    font-size: 10px;
    line-height: 1.35;
    letter-spacing: 0.12em;
  }

  .home-hero h1,
  .home-hero h2 {
    max-width: 10em;
    margin-right: auto;
    margin-left: auto;
    font-size: clamp(30px, 8.8vw, 36px);
  }

  .home-hero p {
    max-width: 31ch;
    margin-right: auto;
    margin-left: auto;
    color: rgba(7, 12, 14, 0.92);
    background: rgba(237, 244, 241, 0.66);
    font-size: 15px;
  }

  .home-hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    width: min(100%, 260px);
    margin: 18px auto 0;
  }

  .home-hero .btn {
    width: 100%;
    min-height: 42px;
    padding: 10px 14px;
    font-size: 15px;
  }

  .home-hero-stage-main {
    left: 50%;
    bottom: 116px;
    width: min(120vw, 620px);
    transform: translateX(-50%);
  }

  .home-hero-stage-product,
  .home-hero-stage-factory {
    left: 50%;
    bottom: 214px;
    width: min(88vw, 430px);
    transform: translateX(-50%);
  }

  .home-hero-stage-product img,
  .home-hero-stage-factory img {
    height: 190px;
  }

  .home-hero-monogram {
    left: 50%;
    top: 330px;
    font-size: clamp(138px, 50vw, 198px);
  }

  .home-hero-metrics {
    bottom: 70px;
    width: min(100% - 28px, 520px);
    grid-template-columns: repeat(2, 1fr);
  }

  .home-hero-metrics span {
    min-height: 58px;
    padding: 11px 12px;
  }

  .home-hero-metrics strong {
    font-size: 22px;
  }

  .home-hero-metrics small {
    font-size: 11px;
  }

  .home-hero-controls {
    bottom: 22px;
  }

  .home-hero-arrow {
    width: 34px;
    height: 34px;
    font-size: 24px;
  }

  .home-hero-dots button {
    width: 24px;
  }
}

@media (max-width: 620px) {
  .home-page .brand {
    max-width: calc(100% - 62px);
  }

  .home-hero {
    min-height: 780px;
  }

  .home-hero-inner {
    min-height: 780px;
  }

  .home-product-peek-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Products 下拉菜单 ===== */
.nav-item-has-dropdown {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  margin-top: 6px;
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  z-index: 30;
}

/* 桌面:悬停 nav-item 展开 */
@media (min-width: 821px) {
  .nav-item-has-dropdown:hover .nav-dropdown,
  .nav-item-has-dropdown:focus-within .nav-dropdown {
    display: flex;
  }
}

.nav-dropdown a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  border-bottom: 0;
  color: var(--text);
  font-size: 14px;
  white-space: nowrap;
}

.nav-dropdown a small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

.nav-dropdown a:hover {
  background: var(--brand-subtle);
  color: var(--brand-deep);
  border-color: transparent;
}

/* 下拉触发项的小箭头 */
.nav-item-has-dropdown > a::after {
  content: "▾";
  margin-left: 5px;
  font-size: 11px;
  opacity: 0.7;
}

/* 移动端:下拉默认随展开态显示为缩进子项 */
@media (max-width: 820px) {
  .nav-item-has-dropdown {
    position: static;
  }
  .nav-dropdown {
    position: static;
    display: none;
    margin: 0;
    padding: 0 0 0 14px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
    min-width: 0;
  }
  .nav-dropdown.is-open {
    display: flex;
  }
  .nav-dropdown a {
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
  }
}

/* ===== About：三实体关系架构图（纯 CSS）===== */
.org-chart {
  display: grid;
  justify-items: center;
  gap: var(--space-24);
  margin: var(--space-24) 0 0;
}

.org-top {
  position: relative;
  padding: var(--space-16) var(--space-32);
  border: 2px solid var(--brand);
  border-radius: var(--radius);
  background: var(--brand-deep);
  color: #ffffff;
  text-align: center;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.org-top small {
  display: block;
  margin-top: 4px;
  color: #bcd4e6;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

/* 顶层到中层的竖直连接线 */
.org-top::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: calc(-1 * var(--space-24));
  width: 2px;
  height: var(--space-24);
  background: var(--line);
}

.org-entities {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  width: 100%;
  position: relative;
}

/* 中层两个实体顶部的横向连接桥 */
.org-entities::before {
  content: "";
  position: absolute;
  top: calc(-1 * var(--space-24));
  left: 25%;
  right: 25%;
  height: 2px;
  background: var(--line);
}

.org-entity {
  position: relative;
  padding: var(--space-24);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}

/* 每个实体上方的竖直短线，接到横桥 */
.org-entity::before {
  content: "";
  position: absolute;
  left: 50%;
  top: calc(-1 * var(--space-24));
  width: 2px;
  height: var(--space-24);
  background: var(--line);
}

.org-entity strong {
  display: block;
  color: var(--brand-deep);
  font-size: 18px;
}

.org-entity span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.org-base {
  width: 100%;
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius);
  background: var(--brand-subtle);
  color: var(--brand-deep);
  text-align: center;
  font-weight: 700;
  font-size: 14px;
}

@media (max-width: 620px) {
  .org-entities {
    grid-template-columns: 1fr;
  }
  .org-entities::before {
    display: none;
  }
}

/* ===== About：Development History 时间线 ===== */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 3px solid var(--brand);
  display: grid;
  gap: var(--space-24);
}
.timeline-item {
  position: relative;
  padding: 12px 16px 12px var(--space-24);
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.timeline-item:hover {
  transform: translateY(-2px);
  border-color: var(--brand);
  box-shadow: 0 8px 22px rgba(0, 122, 195, 0.12);
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 16px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid #fff;
  box-shadow: 0 0 0 1px var(--line);
}
.timeline-item:hover::before {
  background: var(--brand);
}
.timeline-year {
  display: inline-block;
  font-weight: 700;
  color: #1a1a1a;
  font-size: 15px;
  letter-spacing: 0.02em;
  margin-bottom: 4px;
  transition: color 160ms ease;
}
.timeline-item:hover .timeline-year {
  color: var(--brand);
}
.timeline-body {
  display: block;
  color: #1a1a1a;
  line-height: 1.6;
}
.timeline-body strong {
  color: #1a1a1a;
  transition: color 160ms ease;
}
.timeline-item:hover .timeline-body strong {
  color: var(--brand-deep);
}

/* ===== 首页：Who We Are（极简浅色，与首页配色统一）===== */
.who-we-are {
  padding: 48px 0;
}
.who-split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: center;
}

/* 左列：简介 */
.who-intro {
  padding-right: 8px;
}
.who-eyebrow {
  margin: 0 0 10px;
  color: #75500c;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.who-lead {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.7;
}
.who-link {
  color: var(--brand-deep);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  transition: color 160ms ease;
}
.who-link:hover {
  color: var(--brand-deep);
  text-decoration: underline;
}

/* 右列：3 理念横排 */
.who-values {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.who-values li {
  display: flex;
  flex-direction: column;
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
.who-values li:hover {
  border-color: var(--brand);
  box-shadow: 0 6px 18px rgba(0, 122, 195, 0.08);
}
.who-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: rgba(0, 122, 195, 0.1);
  color: var(--brand);
}
.who-values strong {
  display: block;
  margin-bottom: 4px;
  color: var(--brand-deep);
  font-size: 15px;
}
.who-values span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

@media (max-width: 820px) {
  .who-split {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .who-values {
    grid-template-columns: 1fr;
  }
}

/* ===== About：Company Snapshot 速查卡 ===== */
.snapshot-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.snapshot-card table {
  min-width: 0;
}

.snapshot-card th {
  width: 220px;
  background: #edf2f5;
  color: var(--brand-deep);
  font-size: 13px;
  letter-spacing: 0.02em;
  vertical-align: top;
}

.snapshot-card td {
  font-size: 14px;
}

.snapshot-card td small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 620px) {
  .snapshot-card th {
    width: 140px;
  }
}

/* ===== About：双地图实体框 ===== */
.location-maps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-24);
}

.location-map {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.location-map-head {
  padding: var(--space-16);
  border-bottom: 1px solid var(--line);
}

.location-map-head strong {
  display: block;
  color: var(--brand-deep);
  font-size: 16px;
}

.location-map-head span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.location-map iframe {
  display: block;
  width: 100%;
  height: 280px;
  border: 0;
}

@media (max-width: 820px) {
  .location-maps {
    grid-template-columns: 1fr;
  }
}

/* ===== 全站浮动 Telegram 按钮 ===== */
.tg-float {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-pill);
  color: #ffffff;
  background: #229ED9;
  box-shadow: 0 10px 26px rgba(34, 158, 217, 0.42);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.tg-float:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 14px 32px rgba(34, 158, 217, 0.5);
}

.tg-float:active {
  transform: translateY(0) scale(1);
}

@media (max-width: 620px) {
  .tg-float {
    right: 16px;
    bottom: 16px;
    width: 50px;
    height: 50px;
  }
}

/* 返回顶部浮钮：放 Telegram(bottom20+56) 正上方，间距12 → bottom88 */
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 100px;         /* 实测 92px 时与 Telegram 仅 8px，加到 100 拉开到 ~16px */
  z-index: 59;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-pill);
  color: #ffffff;
  background: var(--brand-deep);
  box-shadow: 0 8px 22px rgba(0, 49, 78, 0.34);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 200ms ease, transform 200ms ease, background 160ms ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--brand);
}

@media (max-width: 620px) {
  /* 移动端 Telegram 50px+bottom16 → 返回顶部 bottom 74 避让 */
  .back-to-top {
    right: 16px;
    bottom: 74px;
    width: 44px;
    height: 44px;
  }
}

/* ===== Export Markets 出口市场卡片区 ===== */
.markets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-16);
  margin-top: var(--space-24);
}

.market-card {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  padding: var(--space-24);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}

.market-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 32px;
  font-size: 30px;          /* 仅作用于 🕌 等 emoji 图标，与国旗 SVG 视觉等高 */
  line-height: 1;
  flex: 0 0 auto;
}

/* 内联 SVG 国旗：固定尺寸 + 圆角 + 轻投影，与卡片质感一致 */
.market-flag svg {
  width: 40px;
  height: auto;
  border-radius: 3px;
  box-shadow: 0 1px 3px rgba(27, 39, 51, 0.18);
}

.market-card strong {
  display: block;
  color: var(--brand-deep);
  font-size: 17px;
}

.market-card span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 820px) {
  .markets-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== 首页 hero：整块背景照片版（hero-1.png）===== */
.home-hero-photo {
  background-image:
    /* 白纱只罩文字区(左~0-45%)，更快收尾，让右侧垫圈清晰不被盖糊 */
    linear-gradient(90deg, rgba(238, 242, 244, 0.82) 0%, rgba(238, 242, 244, 0.7) 28%, rgba(238, 242, 244, 0.28) 45%, rgba(238, 242, 244, 0) 60%),
    image-set(url("images/hero-1.webp") type("image/webp"), url("images/hero-1.png") type("image/png"));
  /* 背景图放大到 130% 并右对齐：把最左侧最小垫圈推出文案区，左上空给文字 */
  background-size: cover, 130% auto;
  background-position: center, right center;
  background-repeat: no-repeat;
}

/* 照片版 hero 去掉原"悬浮设计"的暗角/网格叠层，保持照片干净 */
.home-hero-photo::before,
.home-hero-photo::after {
  display: none;
}

/* 照片版文字区：限制宽度，压在左侧留白区 */
.home-hero-photo .home-hero-copy {
  position: relative;
  top: auto;
  left: auto;
  width: 100%;
  max-width: min(460px, 40%);   /* 实测:垫圈阵列从 ~49% 起，文案收到 40% 与最小垫圈留出间隙 */
  padding-top: clamp(96px, 13vh, 140px);
}

/* 照片版 hero：数据条横跨 hero 底部(脱离 copy 窄宽)，5 列完整不裁切 */
.home-hero-photo .home-hero-metrics {
  position: absolute;
  left: 0;            /* 相对 .home-hero-inner(relative)，对齐其内容左右缘 = 按钮组左缘 */
  right: 0;
  bottom: 18px;
  transform: none;
  margin: 0;
  width: auto;
  max-width: none;
  grid-template-columns: repeat(5, 1fr);
}

.home-hero-photo .home-hero-copy h1 {
  color: var(--brand-deep);
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6);
}

.home-hero-photo .home-hero-copy p {
  max-width: 100%;            /* 覆盖 .home-hero p 的 58ch,跟随 46% 父容器,不再逼近垫圈 */
  text-wrap: balance;         /* 收窄后标准号多行：均衡各行字数，消除孤字 */
  color: #14222c;
  background: transparent;    /* 去白底，文字直接落金属背景 */
  border: 0;
  border-radius: 0;
  padding: 4px 0;
  backdrop-filter: none;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);   /* 亮金属底上保可读 */
}

/* 标准号内部绝不断行（如 EN 14399-6 不被拦腰切），换行只在 · 分隔符处 */
.std-nowrap {
  white-space: nowrap;
}

/* 尺寸表上方的说明小字（USS/SAE Pattern 市场说明等） */
.table-note {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 12px;
}

/* 尺寸表折叠区块（原生 details，零 JS）*/
.size-table {
  scroll-margin-top: 90px;
  margin-bottom: var(--space-12);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

.size-table > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-16);
  color: var(--brand-deep);
  font-size: var(--fs-h3);
  font-weight: 800;
  line-height: 1.2;
  user-select: none;
}

.size-table > summary::-webkit-details-marker {
  display: none;   /* 隐藏默认三角，用自定义箭头 */
}

.size-table > summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 700;
  color: var(--muted);
  line-height: 1;
  transition: transform 160ms ease;
}

.size-table[open] > summary::after {
  content: "−";
}

.size-table > summary:hover {
  background: var(--surface-alt);
}

/* details 内的表容器去掉自己的边框（外层 details 已有边框）*/
.size-table .table-wrap {
  border: 0;
  border-radius: 0;
  border-top: 1px solid var(--line);
}

.size-table .table-note {
  padding: 0 var(--space-16);
}

@media (max-width: 820px) {
  /* 移动端：照片整体加白纱保证文字可读，垫圈作背景隐约可见 */
  .home-hero-photo {
    background-image:
      linear-gradient(180deg, rgba(238, 242, 244, 0.9) 0%, rgba(238, 242, 244, 0.78) 55%, rgba(238, 242, 244, 0.5) 100%),
      image-set(url("images/hero-1.webp") type("image/webp"), url("images/hero-1.png") type("image/png"));
    background-position: center, center;
  }
  .home-hero-photo .home-hero-copy {
    max-width: 100%;
    text-align: center;
  }
}

/* ===================================================================
   Product layout：左侧 Product Standards 导航 + 主内容
   （应用：flat-washers / custom-stamping 等产品详情聚合页）
   =================================================================== */

/* 移动端 Product Standards Menu 按钮（桌面隐藏） */
.product-nav-toggle {
  display: none;
  width: 100%;
  margin: 0 0 16px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--ink);
  font-weight: 600;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
}
.product-nav-toggle::after {
  content: " ▾";
  float: right;
  color: var(--muted);
}
.product-nav-toggle[aria-expanded="true"]::after {
  content: " ▴";
}

/* 桌面：sidebar + main 两栏 */
.product-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}
.product-sidebar {
  position: sticky;
  top: 96px; /* 避开吸顶 header */
  max-height: calc(100vh - 96px - 24px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
.product-standards-nav {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.product-standards-nav-title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  color: var(--brand-deep);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.product-nav-group {
  margin-bottom: 14px;
}
.product-nav-group:last-child {
  margin-bottom: 0;
}
.product-nav-group-title {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.product-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.product-nav-list li {
  margin: 0;
}
.product-nav-link {
  display: block;
  padding: 6px 10px;
  border-left: 3px solid transparent;
  color: var(--ink);
  font-size: 13.5px;
  line-height: 1.45;
  text-decoration: none;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}
.product-nav-link:hover {
  background: rgba(0, 122, 195, 0.06);
  color: var(--brand);
}
.product-nav-link[aria-current="page"] {
  border-left-color: var(--brand);
  background: rgba(0, 122, 195, 0.1);
  color: var(--brand-deep);
  font-weight: 600;
}

/* 主内容：min-width:0 防表格撑爆 grid */
.product-main {
  min-width: 0;
}

/* Quick Specs 模块 */
.quick-specs {
  margin: 0 0 24px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f4f8fb;
}
.quick-specs h3,
.quick-specs-title {
  margin: 0 0 12px;
  color: var(--brand-deep);
  font-size: 15px;
}
.quick-spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
}
.quick-spec-grid > div {
  font-size: 13.5px;
  line-height: 1.5;
}
.quick-spec-grid dt {
  display: inline;
  color: var(--muted);
  font-weight: 600;
}
.quick-spec-grid dd {
  display: inline;
  margin: 0;
  color: var(--ink);
}
.quick-spec-grid > div {
  display: flex;
  gap: 8px;
}
.quick-spec-grid > div > span:first-child {
  flex-shrink: 0;
  color: var(--muted);
  font-weight: 600;
  font-size: 13px;
  min-width: 92px;
}

/* 产品主图区 */
.product-image-panel {
  margin: 0 0 24px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #e8f1f7;
  text-align: center;
}
.product-image-panel img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 360px;
  object-fit: contain;
  margin: 0 auto;
}

/* 表前后的轻量 RFQ CTA */
.rfq-inline-cta {
  margin: 18px 0;
  padding: 14px 18px;
  border-left: 3px solid var(--accent);
  background: #fbf6ea;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14px;
  line-height: 1.55;
}
.rfq-inline-cta a {
  color: var(--brand-deep);
  font-weight: 600;
}

/* 锚点目标高亮 */
.size-table:target {
  outline: 2px solid var(--brand);
  outline-offset: 4px;
  border-radius: var(--radius);
}

/* FAQ */
.faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.faq-item {
  margin: 0 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}
.faq-item > summary {
  padding: 14px 18px;
  cursor: pointer;
  color: var(--brand-deep);
  font-weight: 600;
  font-size: 14.5px;
  list-style: none;
}
.faq-item > summary::-webkit-details-marker {
  display: none;
}
.faq-item > summary::after {
  content: " +";
  float: right;
  color: var(--muted);
  font-weight: 400;
}
.faq-item[open] > summary::after {
  content: " −";
}
.faq-item > p {
  margin: 0;
  padding: 0 18px 14px;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.6;
}

/* Products 总览页：混合侧栏导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  color: rgba(16, 23, 25, 0.66);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.breadcrumb a {
  color: var(--brand-deep);
  text-decoration: none;
}
.breadcrumb a:hover {
  color: var(--brand);
}
.products-index-layout {
  align-items: start;
}
.products-index-main {
  min-width: 0;
}
.products-index-layout .product-grid.cols-3 {
  gap: 16px;
}
.products-index-layout .product-standards-nav {
  box-shadow: 0 14px 34px rgba(0, 49, 78, 0.08);
}
.products-index-layout .product-standards-nav-title {
  color: var(--brand-deep);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-transform: none;
}
.products-index-layout .product-nav-link[aria-current="page"] {
  border-left-color: var(--brand);
  background: rgba(0, 122, 195, 0.1);
  color: var(--brand-deep);
  font-weight: 600;
}
.product-nav-cta {
  display: block;
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: var(--radius);
  background: var(--brand);
  color: #ffffff;
  font-size: 13.5px;
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(0, 122, 195, 0.18);
  transition: background 140ms ease, transform 140ms ease, box-shadow 140ms ease;
}
.product-nav-cta:hover {
  background: var(--brand-hover);
  box-shadow: 0 12px 28px rgba(0, 122, 195, 0.22);
  transform: translateY(-1px);
}
/* Popular Washer Standards 标签块（products.html 用） */
.standards-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.standards-tags a {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--panel);
  color: var(--ink);
  font-size: 13.5px;
  text-decoration: none;
  transition: border-color 140ms ease, color 140ms ease, background 140ms ease;
}
.standards-tags a:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: rgba(0, 122, 195, 0.05);
}

/* 响应式：≤960px 折叠 sidebar */
@media (max-width: 960px) {
  .product-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .product-sidebar {
    position: static;
    margin-bottom: 20px;
    max-height: none;
    overflow-y: visible;
  }
  .product-nav-toggle {
    display: block;
  }
  [data-product-nav] {
    display: none;
  }
  [data-product-nav].is-open {
    display: block;
  }
  .quick-spec-grid {
    grid-template-columns: 1fr;
  }
}


.news-item {
  max-width: 920px;
  margin: 0 auto;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.news-date {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.news-item h2 {
  max-width: 760px;
  margin-bottom: 18px;
  color: var(--brand-deep);
}

.news-figure {
  display: flex;
  justify-content: center;
  margin: 24px 0 28px;
}

.news-figure img {
  width: min(100%, 400px);
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 44px rgba(0, 49, 78, 0.14);
}

.news-copy {
  max-width: 760px;
  margin: 0 auto;
}

.news-copy p {
  color: var(--muted);
}

.news-copy a:not(.btn) {
  color: var(--brand-deep);
  font-weight: 700;
}

.news-actions {
  margin-top: 24px;
}

@media (max-width: 620px) {
  .news-item {
    padding: 22px;
  }

  .news-figure img {
    width: min(100%, 360px);
  }
}