/* =========================================================
   尚容科技 / Unifree Technology — 官网样式 v3（2026-08-29 重设计）
   设计语言：瑞士国际主义 + 工业克制
   原则：清晰网格 / 克制配色 / 充足留白 / 统一组件
   保留：hero 四图轮播 + Ken Burns + 标语逐字浮现 + 滚动渐入 + 响应式四档
   ========================================================= */

/* ============ 设计 Token ============ */
:root {
  /* 深色体系（hero / stats / CTA / page-hero / footer） */
  --ink-900: #0A2A3A;
  --ink-800: #0F3547;
  --ink-700: #164457;

  /* 品牌色（对齐 Logo） */
  --brand-blue: #2C5F7C;
  --brand-blue-hi: #3A7A9E;
  --brand-green: #2D7A30;
  --brand-green-hi: #3A9140;

  /* 铜金点缀（降饱和，仅小面积使用） */
  --gold: #B8924B;
  --gold-soft: #D6BB85;
  --gold-deep: #96762F;

  /* 中性（冷灰，工业感） */
  --heading: #12222E;
  --body: #4A5B66;
  --muted: #7C8B95;
  --faint: #A3B0B9;
  --surface: #FFFFFF;
  --surface-soft: #F5F7F9;
  --surface-tint: #EDF1F4;
  --line: #E3E8EC;
  --line-strong: #CFD8DE;

  /* 深色底上的文字（对比度已校验 AA/AAA） */
  --on-dark: #F2F6F8;
  --on-dark-muted: #B9C7D1;
  --on-dark-dim: #8DA0AC;

  /* 布局 */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --shell: 1680px;        /* 全宽区块内容上限 */
  --read: 1240px;         /* 阅读型区块内容上限（含侧栏） */
  --pad-x: 48px;

  /* 阴影（统一三级） */
  --sh-1: 0 2px 8px rgba(10, 42, 58, 0.05);
  --sh-2: 0 10px 28px rgba(10, 42, 58, 0.08);
  --sh-3: 0 20px 48px rgba(10, 42, 58, 0.12);

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ============ 基础重置 ============ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  background: var(--surface);
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; }

/* 中文长文本：标题保留 balance 美观（短行均衡），正文段落用 wrap 自然断行（避免 balance 在中文段落上撑出"等宽"观感） */
h1, h2, h3, h4, h5 { text-wrap: balance; overflow-wrap: break-word; }
p { text-wrap: wrap; overflow-wrap: break-word; }

/* ============ 容器 ============ */
.container {
  width: min(100%, var(--shell));
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}
/* 阅读型容器：内容居中，左右留白对称（避免单侧大片空白） */
.container--read {
  width: min(100%, var(--read));
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

/* ============ 通用排版 ============ */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-green);
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--gold);
}

.section-title {
  font-size: clamp(26px, 2.3vw, 38px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--heading);
}
.section-desc {
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.8;
  color: var(--body);
  /* 与 .section-title 一致：不设 max-width，跟随容器自然换行，避免宽屏被固定宽度强制折行 */
  text-wrap: wrap;
}
.section-head { margin-bottom: 56px; }
.section-head .eyebrow { margin-bottom: 18px; }
.section-head .section-title { margin-bottom: 24px; }
.section-head--center { text-align: center; }
.section-head--center .section-desc { margin-inline: auto; }

/* ============ 区段（流式留白） ============ */
.section { padding: clamp(56px, 6.5vw, 104px) var(--pad-x); }
.section.tinted { background: var(--surface-soft); }
.section.dark { background: var(--ink-900); }
.section.dark .section-title { color: #fff; }
.section.dark .section-desc { color: var(--on-dark-muted); }
.section.dark .eyebrow { color: var(--gold); }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease), transform 0.2s var(--ease),
              box-shadow 0.2s var(--ease);
  min-height: 48px;
}
.btn-primary {
  background: var(--brand-green);
  color: #fff;
}
.btn-primary:hover {
  background: var(--brand-green-hi);
  transform: translateY(-2px);
  box-shadow: var(--sh-2);
}
.btn-navy {
  background: var(--ink-900);
  color: #fff;
}
.btn-navy:hover {
  background: var(--ink-800);
  transform: translateY(-2px);
  box-shadow: var(--sh-2);
}
.btn-outline {
  background: transparent;
  color: var(--ink-900);
  border-color: var(--line-strong);
}
.btn-outline:hover {
  border-color: var(--ink-900);
  background: var(--ink-900);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.85);
}
/* 铜金按钮：改浅底深字，避免大面积金属色 */
.btn-gold {
  background: rgba(184, 146, 75, 0.14);
  color: var(--gold-deep);
  border-color: rgba(184, 146, 75, 0.45);
}
.btn-gold:hover {
  background: rgba(184, 146, 75, 0.22);
  color: #fff;
  background-color: var(--gold-deep);
  border-color: var(--gold-deep);
}
.btn-lg { padding: 16px 36px; font-size: 16px; min-height: 54px; }

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.site-header.scrolled {
  box-shadow: var(--sh-1);
  border-bottom-color: transparent;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  height: 76px;
}
.logo { display: flex; align-items: center; }
.logo img { height: 55px; width: auto; }

.main-nav { display: flex; gap: 36px; align-items: center; }
.main-nav a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--body);
  padding: 8px 0;
  transition: color 0.2s var(--ease);
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--brand-green);
  transition: width 0.25s var(--ease);
}
.main-nav a:hover,
.main-nav a.active { color: var(--heading); }
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }
.nav-contact { display: none; }

/* 语言切换（中英双语） */
.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 14px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--brand-blue);
  border: 1.5px solid var(--brand-blue);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  line-height: 1;
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.lang-switch:hover {
  background: var(--brand-blue);
  color: #fff;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  margin-left: auto;
  -webkit-tap-highlight-color: transparent;
}
.nav-toggle span {
  position: absolute;
  left: 11px;
  right: 11px;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  transition: top 0.28s var(--ease), transform 0.28s var(--ease), opacity 0.28s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 28px; }
.nav-toggle.active span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ============ Hero（全宽大图 + 四图轮播） ============ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  aspect-ratio: 1.852 / 1;
  max-height: calc(100vh - 78px);
  min-height: clamp(440px, 58vh, 660px);
  background-color: var(--ink-900);
  padding: clamp(72px, 9vh, 112px) var(--pad-x) clamp(48px, 6vh, 88px);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.hero-slides,
.hero-slide { position: absolute; inset: 0; }
.hero-slide {
  background-size: cover;
  background-position: center center;
  opacity: 0;
  transition: opacity 1.2s ease;
  animation: kenburns 18s ease-in-out infinite alternate;
}
.hero-slide.active { opacity: 1; }
.hero-slide:nth-child(1) { transform-origin: 50% 50%; }
.hero-slide:nth-child(2) { transform-origin: 30% 70%; }
.hero-slide:nth-child(3) { transform-origin: 70% 30%; }
.hero-slide:nth-child(4) { transform-origin: 50% 60%; }
@keyframes kenburns {
  from { transform: scale(1); }
  to   { transform: scale(1.06); }
}

/* 轮播图四档 WebP 响应式 */
.hero-slide-1 { background-image: url('../assets/hero-factory-1920.webp'); }
.hero-slide-2 { background-image: url('../assets/shanghai-dusk-1920.webp'); }
.hero-slide-3 { background-image: url('../assets/pcb-green-1920.webp'); }
.hero-slide-4 { background-image: url('../assets/hero-lab-glass-1920.webp'); }
/* 桌面宽屏 & 系统缩放后偏矮窗口：封面图 cover 时垂直偏下，
   保证右侧竖排公司名（贴图底部）不被裁切，宁可裁顶部天空 */
@media (min-width: 1025px) {
  .hero-slide-1 { background-position: center 62%; }
}
@media (max-width: 1024px) {
  .hero-slide-1 { background-image: url('../assets/hero-factory-1280.webp'); }
  .hero-slide-2 { background-image: url('../assets/shanghai-dusk-1280.webp'); }
  .hero-slide-3 { background-image: url('../assets/pcb-green-1280.webp'); }
  .hero-slide-4 { background-image: url('../assets/hero-lab-glass-1280.webp'); }
}
@media (max-width: 768px) {
  .hero-slide-1 { background-image: url('../assets/hero-factory-768.webp'); }
  .hero-slide-2 { background-image: url('../assets/shanghai-dusk-768.webp'); }
  .hero-slide-3 { background-image: url('../assets/pcb-green-768.webp'); }
  .hero-slide-4 { background-image: url('../assets/hero-lab-glass-768.webp'); }
  .hero-slide-1 { background-position: 78% center; }
}
@media (max-width: 480px) {
  .hero-slide-1 { background-image: url('../assets/hero-factory-480.webp'); }
  .hero-slide-2 { background-image: url('../assets/shanghai-dusk-480.webp'); }
  .hero-slide-3 { background-image: url('../assets/pcb-green-480.webp'); }
  .hero-slide-4 { background-image: url('../assets/hero-lab-glass-480.webp'); }
}

/* 渐变遮罩：左深右浅，保证文字可读性 */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(102deg,
    rgba(10, 42, 58, 0.95) 0%,
    rgba(10, 42, 58, 0.84) 38%,
    rgba(10, 42, 58, 0.52) 68%,
    rgba(10, 42, 58, 0.30) 100%);
  z-index: 1;
}

.hero .container { position: relative; z-index: 2; padding-bottom: clamp(56px, 7vw, 96px); }
.hero-inner { max-width: none; }

.hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-soft);
  padding: 9px 18px;
  border: 1px solid rgba(184, 146, 75, 0.42);
  border-radius: 100px;
  background: rgba(184, 146, 75, 0.08);
  margin-bottom: 30px;
}
.hero .badge::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
}

.hero h1 {
  font-size: clamp(30px, 3.6vw, 56px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: clamp(16px, 1.8vw, 26px);
}

.hero-sub {
  font-size: 15px;
  line-height: 1.8;
  color: var(--on-dark);
  margin-bottom: clamp(24px, 2.6vw, 40px);
}
.hero-sub b { color: #fff; font-weight: 600; }

.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: clamp(24px, 2.6vw, 40px);
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
  font-size: clamp(12px, 1vw, 14px);
  color: var(--on-dark-muted);
}
.hero-trust span { display: inline-flex; align-items: center; white-space: nowrap; }
.hero-trust span::before {
  content: "";
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--gold);
  margin: 0 12px;
  flex-shrink: 0;
}
.hero-trust span:first-child::before { margin-left: 0; }

/* 品牌金句：桌面悬浮右侧，移动端回归流内 */
.hero-slogan {
  position: absolute;
  top: 22%;
  right: calc((100vw - min(100vw, 1680px)) / 2 + var(--pad-x));
  max-width: 380px;
  font-size: clamp(13px, 1.3vw, 18px);
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.12em;
  line-height: 1.8;
  text-align: right;
  padding-right: 16px;
  border-right: 2px solid var(--gold);
}
.hero-slogan .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.hero-slogan.slogan-anim .char {
  opacity: 1;
  transform: none;
}

.hero-dots {
  position: absolute;
  left: var(--pad-x);
  bottom: 34px;
  display: flex;
  gap: 10px;
  z-index: 3;
}
.hero-dot {
  width: 32px;
  height: 3px;
  border: none;
  padding: 0;
  background: rgba(255, 255, 255, 0.32);
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.3s var(--ease), width 0.3s var(--ease);
}
.hero-dot.active { background: var(--gold); width: 44px; }
.hero::after {
  content: "";
  position: absolute;
  left: var(--pad-x);
  bottom: 0;
  width: 88px;
  height: 3px;
  background: var(--gold);
}

/* ============ Stats（紧接 hero 的深色带） ============ */
.stats {
  background: var(--ink-900);
  padding: clamp(40px, 4vw, 60px) var(--pad-x);
  position: relative;
}
.stats::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(184, 146, 75, 0.45), transparent);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  max-width: var(--shell);
  margin: 0 auto;
}
.stat {
  text-align: center;
  padding: 12px 8px;
  position: relative;
}
.stat + .stat::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 36px;
  background: rgba(255, 255, 255, 0.12);
}
.stat .num {
  font-size: clamp(30px, 2.6vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
.stat .num small { font-size: 0.55em; font-weight: 600; color: var(--gold); }
.stat .label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--on-dark-dim);
}

/* ============ 关于尚容（图文两栏） ============ */
.about-intro { background: var(--surface-soft); }
.about-intro-grid {
  display: grid;
  /* 右侧文字列宽 = 阅读宽（约 44 字），整块居中，右侧不留空 */
  grid-template-columns: 460px minmax(0, 700px);
  justify-content: center;
  gap: clamp(40px, 4vw, 72px);
  align-items: center;
}
.about-intro-media { position: relative; }
.about-photo {
  height: clamp(340px, 34vw, 480px);
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  box-shadow: var(--sh-3);
}
.about-quote {
  position: absolute;
  left: -24px;
  bottom: 32px;
  max-width: 320px;
  background: var(--ink-900);
  color: #fff;
  font-size: 15px;
  line-height: 1.75;
  padding: 22px 26px;
  border-radius: var(--radius);
  border-left: 3px solid var(--gold);
  box-shadow: var(--sh-3);
}
.brand-hl { color: var(--gold); font-weight: 700; }
.about-intro-body .section-head { margin-bottom: 26px; }

/* 正文段落：宽度跟随容器（容器已按阅读宽度设定），不做段落级限宽；
   显式 text-wrap: wrap 覆盖全局 balance，避免多行被强制等长 */
.about-p,
.pd-section p,
.content-block p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--body);
  width: 100%;
  margin: 0 0 1.15em 0;
  text-align: start;
  letter-spacing: 0.01em;
  word-break: normal;
  overflow-wrap: break-word;
  text-wrap: wrap;
}
.about-p b,
.pd-section p b,
.content-block p b { color: var(--heading); font-weight: 600; }

.about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 32px; }
.about-tags span {
  font-size: 13px;
  color: var(--brand-blue);
  background: rgba(44, 95, 124, 0.07);
  border: 1px solid rgba(44, 95, 124, 0.18);
  border-radius: 100px;
  padding: 6px 16px;
}

/* ============ 客户 logo 墙 ============ */
.clients { background: var(--surface); }
.clients-logo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 44px;
}
.client-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 28px 16px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-height: 152px;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease),
              transform 0.25s var(--ease);
}
.client-logo:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--sh-2);
  transform: translateY(-3px);
}
.client-logo img {
  width: 240px;
  max-width: 92%;
  height: 96px;
  object-fit: contain;
}
.client-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--body);
  letter-spacing: 0.06em;
}
.clients-note {
  margin-top: 22px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

/* ============ 产品矩阵 ============ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.p-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease),
              border-color 0.3s var(--ease);
}
.p-card:hover {
  box-shadow: var(--sh-2);
  transform: translateY(-4px);
  border-color: var(--line-strong);
}
.p-card .thumb {
  position: relative;
  height: 190px;
  overflow: hidden;
  background: var(--surface-tint);
}
.p-card .thumb-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.p-card:hover .thumb-img { transform: scale(1.06); }
.p-card .thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 42, 58, 0.04) 0%, rgba(10, 42, 58, 0.26) 100%);
}
.p-card .thumb .icon {
  position: absolute;
  left: 16px;
  top: 16px;
  z-index: 2;
  background: rgba(10, 42, 58, 0.82);
  color: var(--gold-soft);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 6px 13px;
  border-radius: 100px;
  backdrop-filter: blur(6px);
}
.p-card .body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.p-card h3 { font-size: 20px; font-weight: 700; color: var(--heading); line-height: 1.4; margin-bottom: 14px; }
.p-card p { font-size: 14px; line-height: 1.75; color: var(--body); }
.p-card .tags {
  font-size: 13px;
  color: var(--brand-blue);
  padding-top: 14px;
  margin-top: auto;
  border-top: 1px solid var(--line);
  line-height: 1.6;
}
.p-card a.more {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-green);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.25s var(--ease), color 0.25s var(--ease);
}
.p-card a.more:hover { gap: 12px; color: var(--brand-green-hi); }

/* 整卡可点击：系列标题链接拉伸覆盖整张卡片，鼠标点卡片任意位置即可进入产品中心 */
.p-card h3 a::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
}
/* 「查看系列详情」保持在覆盖层之上，保留其悬停微交互 */
.p-card a.more {
  position: relative;
  z-index: 4;
}

/* ===== 首页系列卡片配图统一处理层（方案 C，2026-09-13）=====
   5 张卡片图来源不同（2 张 SEM 灰度 + 3 张彩色实拍），并排时调性不一。
   此处统一施加「轻微降饱和 + 冷调偏移 + 统一底部渐变」，让整套卡片的
   明暗节奏与色调方向收敛；不改变任何形貌与画面内容。
   回退方式：整段删除即可恢复原始观感。 */
.p-card .thumb-img {
  filter: saturate(0.9) contrast(1.03);
}
.p-card .thumb::after {
  background: linear-gradient(180deg, rgba(22, 68, 87, 0.07) 0%, rgba(10, 42, 58, 0.32) 100%);
}

/* ============ 为什么选择尚容（深色） ============ */
.advantages { background: var(--ink-900); color: #fff; }
.advantages .eyebrow { color: var(--gold); }
.advantages .eyebrow::before { background: var(--gold); }
.advantages .section-title { color: #fff; }
.advantages .section-desc { color: var(--on-dark-muted); }
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.adv-card {
  background: var(--ink-900);
  padding: clamp(28px, 2.4vw, 40px) clamp(24px, 2vw, 32px);
  transition: background 0.3s var(--ease);
}
.adv-card:hover { background: var(--ink-800); }
.adv-card .n {
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.16em;
  margin-bottom: 20px;
}
.adv-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.45;
}
.adv-card p { font-size: 14px; line-height: 1.8; color: var(--on-dark-muted); }

/* ============ 服务网络 ============ */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.svc-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease),
              border-color 0.3s var(--ease);
}
.svc-card:hover {
  box-shadow: var(--sh-2);
  transform: translateY(-3px);
  border-color: var(--line-strong);
}
.svc-card .pin {
  width: 8px;
  height: 8px;
  background: var(--gold);
  border-radius: 50%;
  position: relative;
  margin-bottom: 22px;
}
.svc-card .pin::after {
  content: "";
  position: absolute;
  inset: -6px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  opacity: 0.35;
}
.svc-card h4 { font-size: 21px; font-weight: 700; color: var(--heading); line-height: 1.4; }
.svc-card .loc-hl { color: var(--brand-green); font-weight: 700; }
.svc-card .role {
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-blue);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 10px 0 14px;
}
.svc-card p { font-size: 14px; line-height: 1.8; color: var(--body); }

/* ============ FAQ ============ */
.faq { background: var(--surface-soft); }
.faq-inner {
  display: flex;
  gap: clamp(40px, 5vw, 80px);
  align-items: flex-start;
  max-width: var(--read);
  margin: 0 auto;
}
.faq-left { width: 360px; flex-shrink: 0; }
.faq-left .eyebrow { margin-bottom: 18px; }
.faq-left h2 {
  font-size: clamp(24px, 2vw, 32px);
  font-weight: 700;
  color: var(--heading);
  line-height: 1.35;
  margin-bottom: 24px;
}
.faq-left > p { font-size: 15px; line-height: 1.8; color: var(--body); margin-bottom: 30px; }
.contact-card {
  background: var(--ink-900);
  border-radius: var(--radius-lg);
  padding: 30px;
  color: #fff;
}
.contact-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 12px; }
.contact-card p { font-size: 14px; line-height: 1.75; color: var(--on-dark-muted); margin-bottom: 22px; }

.faq-right { flex: 1; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}
.faq-item:hover { box-shadow: var(--sh-1); border-color: var(--line-strong); }
.faq-item .q {
  font-size: 16px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 10px;
  line-height: 1.6;
}
.faq-item .a { font-size: 14px; line-height: 1.85; color: var(--body); }

/* ============ 新闻 ============ */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.news-card:hover { box-shadow: var(--sh-2); transform: translateY(-3px); }
.news-card .meta {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--brand-green);
}
.news-card h4 { font-size: 18px; font-weight: 700; color: var(--heading); line-height: 1.55; text-wrap: wrap; }
.news-card p { font-size: 14px; line-height: 1.8; color: var(--body); text-wrap: wrap; }
.news-card a {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-blue);
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.25s var(--ease);
}
.news-card a:hover { gap: 12px; color: var(--brand-blue-hi); }

/* ============ Final CTA ============ */
.final-cta {
  background: var(--ink-900);
  text-align: center;
  padding: clamp(64px, 7vw, 112px) var(--pad-x);
  position: relative;
  overflow: hidden;
}
.final-cta::before {
  content: "";
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(184, 146, 75, 0.12) 0%, transparent 62%);
  pointer-events: none;
}
.final-cta h2 {
  font-size: clamp(26px, 2.6vw, 40px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 24px;
  position: relative;
  line-height: 1.3;
}
.final-cta p {
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.8;
  color: var(--on-dark-muted);
  margin-bottom: 36px;
  position: relative;
  max-width: 720px;
  margin-inline: auto;
  text-wrap: wrap;
}
.final-cta .cta-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ============ Footer ============ */
.site-footer {
  background: #061C26;
  color: var(--on-dark-dim);
  padding: clamp(56px, 5vw, 80px) var(--pad-x) 36px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: clamp(40px, 5vw, 72px);
  flex-wrap: wrap;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand { width: 340px; max-width: 100%; }
.footer-brand .wordmark {
  font-size: 21px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
}
.footer-brand .wordmark small {
  font-size: 12px;
  font-weight: 400;
  color: var(--on-dark-dim);
  margin-left: 10px;
  letter-spacing: 0.06em;
}
.footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 18px; }
.footer-cols { display: flex; gap: clamp(40px, 5vw, 72px); flex-wrap: wrap; }
.footer-col { min-width: 140px; }
.footer-col h5 {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.1em;
}
.footer-col a, .footer-col span {
  display: block;
  font-size: 14px;
  color: var(--on-dark-dim);
  margin-bottom: 12px;
  line-height: 1.6;
  transition: color 0.2s var(--ease);
}
.footer-col a:hover { color: var(--gold-soft); }
/* ===== 联系信息图标 v2：圆角徽章底 + 渐变描边（footer 金 / 卡片品牌蓝绿） ===== */
.footer-col span.ci { display: flex; align-items: center; gap: 10px; line-height: 1; }
.footer-col span.ci .ci-val {
  display: inline-flex; align-items: center; line-height: 1;
  min-height: 18px; color: var(--on-dark-dim);
}
.footer-col span.ci .ci-plate {
  flex: 0 0 28px; width: 28px; height: 28px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(214,187,133,.20), rgba(214,187,133,.05));
  border: 1px solid rgba(214,187,133,.25);
}
.footer-col .ci-plate .ci-svg { display: block; stroke: url(#ci-grad-gold); }
/* === 联系列"两并列一行"组合：宽视口并排，窄视口堆叠 === */
.footer-col .ci-pair {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, auto);
  column-gap: 12px;
  row-gap: 12px;
  margin-bottom: 12px;
}
.footer-col .ci-pair > .ci { margin-bottom: 0; }
.footer-col .ci-pair .ci { white-space: nowrap; }
@media (max-width: 768px) {
  .footer-col .ci-pair { grid-template-columns: 1fr; }
}
/* info-row 卡片：标签列 40px 统一、徽章贴左、值列对齐 */
.info-row strong.ir-icon { width: 40px; min-width: 40px; display: flex; align-items: center; }
.info-row .ci-plate {
  flex: 0 0 28px; width: 28px; height: 28px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(44,95,124,.10), rgba(45,122,48,.16));
  border: 1px solid rgba(44,95,124,.18);
}
.info-row .ci-plate .ci-svg { display: block; stroke: url(#ci-grad-brand); }
.info-row strong.ir-icon + span, .info-row strong.ir-icon + a { flex: 1; min-width: 0; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  font-size: 13px;
  color: var(--on-dark-dim);
}
.footer-bottom a:hover { color: var(--gold-soft); }

/* ============ 子页 Hero ============ */
.page-hero,
.about-hero,
.pd-hero {
  background: var(--ink-900);
  padding: clamp(48px, 5vw, 76px) var(--pad-x) clamp(40px, 4vw, 60px);
  color: #fff;
  position: relative;
}
.page-hero::after,
.about-hero::after {
  content: "";
  position: absolute;
  left: var(--pad-x);
  bottom: 0;
  width: 80px;
  height: 3px;
  background: var(--gold);
}
/* 产品中心专属 Hero：分子式背景图 + 3 档响应式 + 渐变遮罩保证白字可读 */
.page-hero-products {
  --hero-scrim-b: 0; /* 实测正文对比度 5.7-8.0，已达标，无需加强 */
  background-color: var(--ink-900);
  background-image: url('../assets/hero-products-1920.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.page-hero-products::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  /* 上层：下部压暗。标题/面包屑文字短、落在左侧暗区本已达标，
     正文段落横向铺得宽（最宽 88%）压在亮区上，故单独加强下部，
     保证白字达到 WCAG AA（正文 4.5:1、大标题 3:1）。
     强度 --hero-scrim-b 由实测反推，见 scripts/_hero_scrim_solve2.py。
     下层：既有左深右浅对角渐变，保留图片右侧通透感。 */
  background:
    linear-gradient(
      to bottom,
      rgba(10, 42, 58, 0) 25%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 62%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 100%
    ),
    linear-gradient(
      105deg,
      rgba(10, 42, 58, 0.88) 0%,
      rgba(10, 42, 58, 0.72) 22%,
      rgba(10, 42, 58, 0.45) 45%,
      rgba(10, 42, 58, 0.18) 68%,
      rgba(10, 42, 58, 0.00) 90%
    );
}
.page-hero-products .container {
  position: relative;
  z-index: 1;
}
@media (max-width: 1024px) {
  .page-hero-products { background-image: url('../assets/hero-products-768.webp'); }
}
@media (max-width: 480px) {
  .page-hero-products { background-image: url('../assets/hero-products-480.webp'); }
}
/* 技术研发页专属 Hero：显微镜/试管实验室背景图 + 3 档响应式 + 渐变遮罩保证白字可读 */
.page-hero-rd {
  --hero-scrim-b: 0.33; /* 宽屏正文实测 2.4-2.7，未达标 */
  background-color: var(--ink-900);
  background-image: url('../assets/hero-rd-1920.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.page-hero-rd::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  /* 上层：下部压暗。标题/面包屑文字短、落在左侧暗区本已达标，
     正文段落横向铺得宽（最宽 88%）压在亮区上，故单独加强下部，
     保证白字达到 WCAG AA（正文 4.5:1、大标题 3:1）。
     强度 --hero-scrim-b 由实测反推，见 scripts/_hero_scrim_solve2.py。
     下层：既有左深右浅对角渐变，保留图片右侧通透感。 */
  background:
    linear-gradient(
      to bottom,
      rgba(10, 42, 58, 0) 25%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 62%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 100%
    ),
    linear-gradient(
      105deg,
      rgba(10, 42, 58, 0.88) 0%,
      rgba(10, 42, 58, 0.72) 22%,
      rgba(10, 42, 58, 0.45) 45%,
      rgba(10, 42, 58, 0.18) 68%,
      rgba(10, 42, 58, 0.00) 90%
    );
}
.page-hero-rd .container {
  position: relative;
  z-index: 1;
}
@media (max-width: 1024px) {
  .page-hero-rd { background-image: url('../assets/hero-rd-768.webp'); }
}
@media (max-width: 480px) {
  .page-hero-rd { background-image: url('../assets/hero-rd-480.webp'); }
}
/* 新闻资讯页专属 Hero：PCB 电路板背景图 + 3 档响应式 + 渐变遮罩保证白字可读 */
.page-hero-news {
  --hero-scrim-b: 0; /* 2026-09-12 换新图（深蓝信息波）后实测正文 11.0-14.8，全视口达标 */
  background-color: var(--ink-900);
  background-image: url('../assets/hero-news-1920.webp?v=20260912b');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.page-hero-news::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  /* 上层：下部压暗。标题/面包屑文字短、落在左侧暗区本已达标，
     正文段落横向铺得宽（最宽 88%）压在亮区上，故单独加强下部，
     保证白字达到 WCAG AA（正文 4.5:1、大标题 3:1）。
     强度 --hero-scrim-b 由实测反推，见 scripts/_hero_scrim_solve2.py。
     下层：既有左深右浅对角渐变，保留图片右侧通透感。 */
  background:
    linear-gradient(
      to bottom,
      rgba(10, 42, 58, 0) 25%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 62%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 100%
    ),
    linear-gradient(
      105deg,
      rgba(10, 42, 58, 0.88) 0%,
      rgba(10, 42, 58, 0.72) 22%,
      rgba(10, 42, 58, 0.45) 45%,
      rgba(10, 42, 58, 0.18) 68%,
      rgba(10, 42, 58, 0.00) 90%
    );
}
.page-hero-news .container {
  position: relative;
  z-index: 1;
}
@media (max-width: 1024px) {
  .page-hero-news { background-image: url('../assets/hero-news-768.webp?v=20260912b'); }
}
@media (max-width: 480px) {
  .page-hero-news { background-image: url('../assets/hero-news-480.webp?v=20260912b'); }
}
/* 关于尚容页专属 Hero：雪山攀登实景 + 左深右浅对角遮罩。
   文字区（左半）深色保证白字可读；攀登者区（右半）保持原图明亮不压抑；
   所有视口 background-position: right center，确保登山者始终在视野内。 */
.page-hero-about {
  --hero-scrim-b: 0.47; /* 宽屏正文原实测 1.8-1.9（雪地过亮）*/
  background-color: #1a2a35;
  background-image: url('../assets/about-snow-1920.webp?v=20260912');
  background-size: cover;
  background-position: center; /* 1920 图 6.78:1 与 hero 完全匹配，cover 不裁切 */
  background-repeat: no-repeat;
}
.page-hero-about::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  /* 105° 对角渐变：左侧深 → 右侧完全透明。
     左：文字区 88% 深色确保白字强对比；
     右：攀登者区 0% 透明，蓝天/雪坡/队伍保持原图亮度。 */
  /* 上层：下部压暗。标题/面包屑文字短、落在左侧暗区本已达标，
     正文段落横向铺得宽（最宽 88%）压在亮区上，故单独加强下部，
     保证白字达到 WCAG AA（正文 4.5:1、大标题 3:1）。
     强度 --hero-scrim-b 由实测反推，见 scripts/_hero_scrim_solve2.py。
     下层：既有左深右浅对角渐变，保留图片右侧通透感。 */
  background:
    linear-gradient(
      to bottom,
      rgba(10, 42, 58, 0) 25%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 62%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 100%
    ),
    linear-gradient(
      105deg,
      rgba(10, 42, 58, 0.88) 0%,
      rgba(10, 42, 58, 0.72) 22%,
      rgba(10, 42, 58, 0.45) 45%,
      rgba(10, 42, 58, 0.18) 68%,
      rgba(10, 42, 58, 0.00) 90%
    );
}
.page-hero-about .container {
  position: relative;
  z-index: 1;
  /* 与其他 page-hero 一致：文字左对齐（不再右对齐） */
}
.page-hero-about h1 { color: #fff; }
.page-hero-about p { color: rgba(255, 255, 255, 0.92); }
@media (max-width: 1024px) {
  .page-hero-about {
    background-image: url('../assets/about-snow-768.webp?v=20260912');
    background-position: center; /* 768 图 3.11:1 与平板 hero 匹配 */
  }
}
@media (max-width: 480px) {
  .page-hero-about {
    background-image: url('../assets/about-snow-480.webp?v=20260912');
    background-position: center; /* 480 图 2:1 与手机 hero 匹配 */
  }
  /* 窄屏：渐变更陡一些，确保更小容器内的白字对比度。
     同样叠加下部压暗层，强度取窄屏实测值。 */
  .page-hero-about::before {
    background:
      linear-gradient(
        to bottom,
        rgba(10, 42, 58, 0) 25%,
        rgba(10, 42, 58, var(--hero-scrim-b, 0)) 62%,
        rgba(10, 42, 58, var(--hero-scrim-b, 0)) 100%
      ),
      linear-gradient(
        110deg,
        rgba(10, 42, 58, 0.90) 0%,
        rgba(10, 42, 58, 0.75) 28%,
        rgba(10, 42, 58, 0.48) 52%,
        rgba(10, 42, 58, 0.15) 78%,
        rgba(10, 42, 58, 0.00) 100%
      );
  }
}

/* 加入我们专属 Hero：暗调实验室实景（实验台横贯画面）+ 左深右浅对角遮罩。
   页面主题为科研/技服岗位招聘，故选"实验室一线"场景；
   图片本身左暗右亮，白字压在左侧暗区。三档图由 scripts/_make_careers_hero.py 产出。 */
.page-hero-careers {
  --hero-scrim-b: 0; /* 实测值见下方 ≤1024 断点，数值由 _hero_scrim_solve2.py 反推 */
  background-color: #0a1a24;
  background-image: url('../assets/hero-careers-1920.webp?v=20260912c');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.page-hero-careers::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  /* 上层：下部压暗（正文段落横向铺宽，压在亮区上）；
     下层：左深右浅对角渐变，保留图片右侧器械的通透感。
     强度 --hero-scrim-b 由实测反推，保证白字达 WCAG AA（正文 4.5:1、大标题 3:1）。 */
  background:
    linear-gradient(
      to bottom,
      rgba(10, 42, 58, 0) 25%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 62%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 100%
    ),
    linear-gradient(
      105deg,
      rgba(10, 42, 58, 0.88) 0%,
      rgba(10, 42, 58, 0.72) 22%,
      rgba(10, 42, 58, 0.45) 45%,
      rgba(10, 42, 58, 0.18) 68%,
      rgba(10, 42, 58, 0.00) 90%
    );
}
.page-hero-careers .container {
  position: relative;
  z-index: 1;
}
@media (max-width: 1024px) {
  .page-hero-careers { background-image: url('../assets/hero-careers-768.webp?v=20260912c'); }
}
@media (max-width: 480px) {
  .page-hero-careers { background-image: url('../assets/hero-careers-480.webp?v=20260912c'); }
}

/* 联系我们专属 Hero：夜色城市天际线实景 + 左深右浅对角遮罩。
   页面主题为"沟通连接、随时可达"，故选跨水夜景（总部与服务网点）；
   图片左半为深暗夜色/山影，白字压在左侧暗区。三档图由 scripts/_make_contact_hero.py 产出。 */
.page-hero-contact {
  --hero-scrim-b: 0; /* 实测值见下方 ≤1024 断点，数值由 _hero_scrim_solve2.py 反推 */
  background-color: #0a1620;
  background-image: url('../assets/hero-contact-1920.webp?v=20260912');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.page-hero-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  /* 上层：下部压暗（正文段落横向铺宽，压在亮区上）；
     下层：左深右浅对角渐变，保留图片右侧城市灯火的通透感。
     强度 --hero-scrim-b 由实测反推，保证白字达 WCAG AA（正文 4.5:1、大标题 3:1）。 */
  background:
    linear-gradient(
      to bottom,
      rgba(10, 42, 58, 0) 25%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 62%,
      rgba(10, 42, 58, var(--hero-scrim-b, 0)) 100%
    ),
    linear-gradient(
      105deg,
      rgba(10, 42, 58, 0.88) 0%,
      rgba(10, 42, 58, 0.72) 22%,
      rgba(10, 42, 58, 0.45) 45%,
      rgba(10, 42, 58, 0.18) 68%,
      rgba(10, 42, 58, 0.00) 90%
    );
}
.page-hero-contact .container {
  position: relative;
  z-index: 1;
}
@media (max-width: 1024px) {
  .page-hero-contact { background-image: url('../assets/hero-contact-768.webp?v=20260912'); }
}
@media (max-width: 480px) {
  .page-hero-contact { background-image: url('../assets/hero-contact-480.webp?v=20260912'); }
}

/* 窄视口（≤1024）：正文段落横向铺得更宽（最宽达 hero 的 88%），
   压在图片亮区上，故加大下部压暗强度。数值由实测反推（含安全余量）。
   产品中心实测各视口均达标，保持 0。 */
@media (max-width: 1024px) {
  .page-hero-products { --hero-scrim-b: 0; }
  .page-hero-news { --hero-scrim-b: 0; }
  .page-hero-rd { --hero-scrim-b: 0.49; }
  .page-hero-about { --hero-scrim-b: 0.54; }
  .page-hero-careers { --hero-scrim-b: 0; }
  .page-hero-contact { --hero-scrim-b: 0; }
}
.breadcrumb {
  font-size: 13px;
  color: var(--on-dark-dim);
  margin-bottom: 22px;
  letter-spacing: 0.04em;
}
.breadcrumb a { color: var(--on-dark-dim); transition: color 0.2s var(--ease); }
.breadcrumb a:hover { color: var(--gold-soft); }
.page-hero h1,
.about-hero h1 {
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: #fff;
  margin-bottom: 16px;
}
.page-hero p,
.about-hero p {
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.85;
  color: var(--on-dark-muted);
}
.page-hero .container,
.about-hero .container,
.pd-hero .container { max-width: var(--read); }

/* ============ 子页布局（居中对称留白） ============ */
.subpage-layout {
  display: flex;
  gap: clamp(40px, 4vw, 64px);
  padding: clamp(48px, 5vw, 80px) var(--pad-x) clamp(56px, 6vw, 96px);
  /* 内容整体居中：左右留白对称，不是"右侧单侧大片空白" */
  max-width: 1240px;
  margin: 0 auto;
  align-items: flex-start;
}
.subpage-sidebar { width: 240px; flex-shrink: 0; }
.subnav {
  position: sticky;
  top: 96px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.subnav a {
  display: block;
  padding: 15px 22px;
  font-size: 15px;
  color: var(--body);
  border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease);
  line-height: 1.5;
}
.subnav a:last-child { border-bottom: none; }
.subnav a:hover {
  background: var(--surface-soft);
  color: var(--heading);
  border-left-color: var(--brand-green);
}
.subnav a.active {
  background: var(--surface-soft);
  color: var(--ink-900);
  font-weight: 600;
  border-left-color: var(--gold);
}
.subpage-main { flex: 1; min-width: 0; }

/* ============ 内容块 ============ */
.content-block { margin-bottom: clamp(40px, 4vw, 64px); }
.content-block:last-child { margin-bottom: 0; }
.content-block h2 {
  position: relative;
  font-size: clamp(20px, 1.7vw, 27px);
  font-weight: 700;
  color: var(--heading);
  line-height: 1.4;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
  padding-bottom: 14px;
}
/* 标题下短品牌线：替代整条通栏粗黑线，简洁高级 */
.content-block h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 52px;
  height: 3px;
  border-radius: 3px;
  background: var(--brand-blue);
}
.content-block h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--heading);
  margin: 32px 0 14px;
  line-height: 1.5;
}
.content-block ul { padding-left: 20px; margin-bottom: 20px; }
.content-block ul li {
  font-size: 16px;
  line-height: 1.8;
  color: var(--body);
  margin-bottom: 10px;
  list-style: disc;
}
.content-block ul li::marker { color: var(--brand-green); }

/* ============ 数据表格（卡片化：去纵向边框，横向细线） ============ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  font-size: 15px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}
.data-table th, .data-table td {
  padding: 15px 20px;
  text-align: left;
  line-height: 1.7;
  border-bottom: 1px solid var(--line);
}
.data-table thead th {
  background: var(--surface-tint);
  color: var(--heading);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--line-strong);
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:nth-child(even) { background: #FAFBFC; }
.data-table tbody td:first-child {
  font-weight: 600;
  color: var(--heading);
  background: rgba(44, 95, 124, 0.04);
  width: 150px;
}

/* ============ 引言块 ============ */
.quote-block {
  background: var(--ink-900);
  color: var(--on-dark);
  padding: 30px 34px;
  border-radius: var(--radius);
  border-left: 3px solid var(--gold);
  margin-top: 26px;
  line-height: 1.9;
  font-size: 16px;
}
.quote-block b { color: var(--gold-soft); font-weight: 700; }

/* ============ 产品系列链接列表 ============ */
.prod-links li {
  padding: 15px 20px;
  border-left: 3px solid var(--brand-blue);
  background: var(--surface-soft);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body);
}
.prod-links a { color: var(--ink-900); font-weight: 600; }
.prod-links a:hover { color: var(--brand-blue); }

/* ============ 发展历程时间轴（保留交互逻辑） ============ */
.tl-timeline { user-select: none; }
.tl-axis { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 32px; }
.tl-axis-start, .tl-axis-end {
  flex: 0 0 auto;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: 0.02em;
  padding-top: 2px;
}
.tl-axis-end { color: var(--gold-deep); }
.tl-axis-track {
  position: relative;
  flex: 1;
  display: flex;
  justify-content: space-between;
  padding-top: 8px;
}
.tl-axis-line {
  position: absolute;
  top: 15px;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(207, 216, 222, 0.6), var(--brand-blue) 70%, var(--gold) 100%);
  z-index: 0;
}
.tl-node {
  position: relative;
  z-index: 1;
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
  text-align: center;
  flex: 0 0 auto;
}
.tl-node-dot {
  display: block;
  width: 14px;
  height: 14px;
  margin: 0 auto;
  border-radius: 50%;
  background: var(--surface);
  border: 3px solid var(--brand-blue);
  transition: transform 0.25s var(--ease), background 0.25s var(--ease),
              border-color 0.25s var(--ease);
}
.tl-node-label {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  transition: color 0.25s var(--ease);
}
.tl-node:hover .tl-node-dot { transform: scale(1.2); }
.tl-node:hover .tl-node-label { color: var(--ink-900); }
.tl-node.active .tl-node-dot {
  background: var(--gold);
  border-color: var(--gold);
  transform: scale(1.3);
}
.tl-node.active .tl-node-label { color: var(--ink-900); font-weight: 700; }
.tl-stage { display: flex; align-items: center; gap: 16px; }
.tl-cards {
  position: relative;
  flex: 1;
  min-width: 0;
  overflow: hidden; /* 裁掉滑出容器的卡片，防止盖住左右箭头 */
  transition: height 0.6s var(--ease);
}
.tl-card {
  display: flex;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  width: 100%; /* translateX(±100%) 的基准 = 整卡宽度 */
  flex-direction: column;
  gap: 22px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 34px;
  opacity: 0;
  visibility: hidden;
  transform: none;
  pointer-events: none;
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease), visibility 0s linear 0.6s;
}
.tl-card.active {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease), visibility 0s;
}
/* 切换动效：旧卡整卡缓缓滑出（next 向左、prev 向右），新卡从对侧整卡缓缓滑入 */
.tl-card.tl-out-left  { transform: translateX(-100%); opacity: 0; }
.tl-card.tl-out-right { transform: translateX(100%);  opacity: 0; }
.tl-card.tl-in-left   { transform: translateX(-100%); }
.tl-card.tl-in-right  { transform: translateX(100%);  }
@media (prefers-reduced-motion: reduce) {
  .tl-card, .tl-cards { transition: none; }
}
.tl-card-head { border-bottom: 1px solid var(--line); padding-bottom: 18px; }
.tl-card-year {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--gold-deep);
  margin-bottom: 10px;
}
.tl-card-title {
  font-size: clamp(19px, 1.5vw, 24px);
  font-weight: 700;
  color: var(--ink-900);
  margin-bottom: 10px;
  line-height: 1.4;
}
.tl-card-desc { font-size: 14px; line-height: 1.8; color: var(--body); }
.tl-card-items { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.tl-row {
  display: flex;
  align-items: baseline;
  gap: 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.tl-row:last-child { border-bottom: none; padding-bottom: 0; }
.tl-row-year {
  flex: 0 0 60px;
  font-size: 24px;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.tl-row-text { font-size: 15px; line-height: 1.75; color: var(--body); }
.tl-arrow {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-900);
  font-size: 18px;
  cursor: pointer;
  box-shadow: var(--sh-1);
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
              box-shadow 0.2s var(--ease);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tl-arrow:hover { background: var(--ink-900); color: #fff; box-shadow: var(--sh-2); }
.tl-arrow:disabled { opacity: 0.3; cursor: default; background: var(--surface); color: var(--faint); box-shadow: none; }
.tl-arrow:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

/* ============ 图文（关于/研发配图） ============ */
.figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 28px 0;
}
.figure img { width: 100%; height: clamp(200px, 24vw, 340px); object-fit: cover; }
.figure figcaption {
  font-size: 13px;
  color: var(--muted);
  padding: 12px 4px;
  line-height: 1.6;
}
.rd-photos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 340px));
  gap: 24px;
  margin: 32px auto;
  justify-content: center;
}
.rd-photo { margin: 0; }
.rd-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.rd-photo:hover img { box-shadow: var(--sh-2); transform: translateY(-3px); }
.rd-photo figcaption {
  font-size: 12px;
  color: var(--muted);
  padding: 12px 4px 0;
  text-align: center;
  letter-spacing: 0.04em;
}

/* ============ 产品中心 · 工序导航带（五环节索引，2026-09-13 新增） ============ */
.step-nav {
  position: sticky;
  top: 76px;                /* 吸附于吸顶页头之下（页头 76px / ≤768px 64px） */
  z-index: 90;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.step-nav-inner {
  display: flex;
  gap: clamp(8px, 1.2vw, 16px);
  overflow-x: auto;
  padding: clamp(10px, 1.2vw, 14px) 0;
  scrollbar-width: none;
}
.step-nav-inner::-webkit-scrollbar { display: none; }
.step-chip {
  flex: 0 0 auto;
  padding: 8px clamp(14px, 1.4vw, 20px);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: clamp(13px, 1.05vw, 15px);
  font-weight: 500;
  color: var(--body);
  white-space: nowrap;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease);
}
.step-chip:hover { background: var(--ink-900); color: #fff; border-color: var(--ink-900); }
/* 锚点跳转留白：避开吸顶页头 + 粘性导航带（实测 77+73=150px，留 10px 呼吸） */
.series-row { scroll-margin-top: 160px; }
@media (max-width: 768px) {
  .step-nav { top: 64px; }
  .series-row { scroll-margin-top: 136px; }
}

/* ============ 产品总览页（系列列表） ============ */
.series-list {
  padding: clamp(48px, 5vw, 80px) var(--pad-x) clamp(56px, 6vw, 96px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: var(--read);
  margin: 0 auto;
}
.series-row {
  display: flex;
  gap: clamp(28px, 3vw, 48px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 2.2vw, 34px);
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.series-row:hover { box-shadow: var(--sh-2); border-color: var(--line-strong); }
.series-row .left { width: 300px; flex-shrink: 0; }
.series-row .left h3 { font-size: 21px; font-weight: 700; color: var(--heading); margin-bottom: 10px; line-height: 1.4; }
.series-row .left h3 small {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--faint);
  margin-top: 4px;
  letter-spacing: 0.06em;
}
.series-row .left p { font-size: 14px; line-height: 1.8; color: var(--body); }
.series-row .right { flex: 1; min-width: 0; }
.series-row .subgroup { margin-bottom: 20px; }
.series-row .subgroup:last-child { margin-bottom: 0; }
.series-row .subgroup h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.series-row .subgroup h4 small { font-weight: 400; color: var(--faint); margin-left: 8px; font-size: 12px; }
.series-row .subgroup .prods { display: flex; flex-wrap: wrap; gap: 8px; }
.prod-link {
  display: inline-flex;
  align-items: center;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 8px 18px;
  font-size: 14px;
  color: var(--body);
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease);
}
.prod-link:hover {
  background: var(--ink-900);
  color: #fff;
  border-color: var(--ink-900);
}

/* ============ 产品详情页 ============ */
.pd-hero h1 {
  font-size: clamp(26px, 2.6vw, 40px);
  font-weight: 700;
  line-height: 1.28;
  color: #fff;
  margin-bottom: 14px;
}
.pd-hero .series-tag {
  display: inline-block;
  background: rgba(184, 146, 75, 0.16);
  color: var(--gold-soft);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 18px;
}
.pd-hero .summary {
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.85;
  color: var(--on-dark-muted);
}
.pd-content { padding: clamp(32px, 5vw, 72px) var(--pad-x) clamp(40px, 6vw, 96px); }
.pd-layout {
  display: flex;
  gap: clamp(40px, 4vw, 64px);
  max-width: 1360px;
  margin: 0 auto;
  align-items: flex-start;
}
.pd-main { flex: 1; min-width: 0; }
.pd-sidebar { width: clamp(260px, 21vw, 320px); flex-shrink: 0; }
.pd-section { margin-bottom: clamp(28px, 3.5vw, 56px); }
.pd-section:last-child { margin-bottom: 0; }
.pd-section h2 {
  font-size: clamp(19px, 1.5vw, 23px);
  font-weight: 700;
  color: var(--heading);
  padding-bottom: 14px;
  border-bottom: 2px solid var(--ink-900);
  margin-bottom: clamp(16px, 1.6vw, 24px);
}
.pd-section ul.feature-list { display: flex; flex-direction: column; gap: 14px; }
.pd-section ul.feature-list li {
  position: relative;
  padding-left: 26px;
  font-size: clamp(15px, 2vw, 16px);
  line-height: 1.8;
  color: var(--body);
}
.pd-section ul.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  background: var(--brand-green);
  border-radius: 2px;
}
.pd-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
  gap: clamp(10px, 1.1vw, 16px);
  margin-top: 24px;
}
.pd-gallery img {
  width: 100%;
  /* 缩略图墙高度随视口伸缩（120~168px），窄屏不再挤成一团 */
  height: clamp(120px, 11.5vw, 168px);
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  cursor: zoom-in;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.pd-gallery img:hover { transform: scale(1.03); box-shadow: var(--sh-1); }

/* 图文卡：图片在上、说明文字在下
   同一行两张图等高（grid stretch），图注用 margin-top:auto 推到卡片底部，
   保证同行图注基线对齐；图片 object-fit:contain 完整显示不裁切（保留 SEM 倍率与比例尺）。 */
/* 2026-09-12 老陈定：宽视口一行 3 张。用 auto-fill 而非固定列数——
   列数随主区可用宽度自动伸缩（宽屏 3 列 / 中等 2 列），图片尺寸按视口自适应；
   auto-fill（非 auto-fit）保留空轨道，图不足 3 张时不撑爆，仍占满一格。 */
.pd-gallery-captioned {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
  gap: 26px 20px;
  max-width: 100%;
  align-items: stretch;
}
.pd-gallery-captioned .pd-figure {
  margin: 0;
  display: flex;
  flex-direction: column;
}
.pd-gallery-captioned img {
  height: auto;
  max-height: none;
  object-fit: contain;
  background: var(--surface);
}
.pd-gallery-captioned figcaption {
  margin-top: auto; /* 推到底部，使同一行图注基线对齐 */
  padding-top: 10px;
  font-size: clamp(12.5px, 0.95vw, 13.5px);
  line-height: 1.7;
  color: var(--muted);
}
.pd-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* 数据表格：把原本以图片形式呈现的试验数据改为可读表格（2026-09-12 老陈要求）
   窄屏用容器横向滚动，不撑破页面；表头品牌蓝、隔行浅底，便于横向读数。 */
.pd-table-wrap {
  margin-top: clamp(18px, 1.8vw, 26px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
/* 说明文字放在滚动容器外，横向滑动表格时不会被一起拖动 */
.pd-table-note {
  margin: 0 0 10px;
  font-size: clamp(12.5px, 0.95vw, 13.5px);
  line-height: 1.7;
  color: var(--muted);
}
.pd-table-note + .pd-table-wrap { margin-top: 0; }
.pd-table-note ~ .pd-table-note { margin-top: clamp(22px, 2.2vw, 32px); }
.pd-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: clamp(12.5px, 1.05vw, 14px);
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
}
.pd-table th,
.pd-table td {
  padding: clamp(8px, 0.8vw, 12px) clamp(8px, 0.9vw, 14px);
  text-align: center;
  white-space: nowrap;
  color: var(--body);
  border-bottom: 1px solid var(--line);
}
.pd-table thead th {
  background: var(--brand-blue);
  color: #fff;
  font-weight: 600;
  border-bottom: 0;
}
.pd-table tbody tr:nth-child(even) { background: var(--surface-soft); }
.pd-table tbody tr:last-child td { border-bottom: 0; }

.pd-card {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 1.8vw, 26px) clamp(18px, 1.5vw, 26px);
  margin-bottom: 16px;
}
.pd-card h4 { font-size: 16px; font-weight: 700; color: var(--heading); margin-bottom: 14px; }
.pd-card p, .pd-card li { font-size: 14px; line-height: 1.8; color: var(--body); }
.pd-card ul { list-style: disc; padding-left: 18px; }
.pd-card ul li { margin-bottom: 8px; }
.pd-card a { color: var(--brand-blue); word-break: break-all; }
.pd-card a:hover { color: var(--brand-blue-hi); }
/* 产品页联系卡片按钮独占一行并加大与上方文字的间距（覆盖 27 个产品页） */
.pd-card a.btn {
  display: block;
  margin-top: clamp(14px, 1.3vw, 18px);
  text-align: center;
}
/* 邮箱链接不换行保护：所有页面 mailto 链接整词显示，避免被硬切换行（覆盖全部视口） */
.pd-card a[href^="mailto:"],
a[href^="mailto:"] {
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: break-word;
}
/* 窄视口保底：侧栏卡片内容允许收缩，防止邮箱溢出卡片边界 */
.pd-sidebar .pd-card { min-width: 0; }

.related-products h4 { font-size: 16px; font-weight: 700; color: var(--heading); margin-bottom: 14px; }
.related-products .rp-list { display: flex; flex-direction: column; gap: 8px; }
.related-products a {
  display: block;
  font-size: 14px;
  color: var(--body);
  padding: clamp(12px, 0.9vw, 13px) clamp(15px, 1.3vw, 18px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease);
}
.related-products a:hover {
  background: var(--ink-900);
  color: #fff;
  border-color: var(--ink-900);
}

/* 侧栏底部"返回产品中心"：裸按钮（不要卡片包装、不带系列名说明） */
.pd-back-btn {
  display: block;
  width: 100%;
  margin-top: clamp(12px, 1.2vw, 16px);
  text-align: center;
  font-weight: 600;
  box-sizing: border-box;
}

/* ============ 新闻列表页 ============ */
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  display: flex;
  gap: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 2.2vw, 32px);
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.news-item:hover { box-shadow: var(--sh-2); border-color: var(--line-strong); }
.news-item .date { min-width: 88px; padding-top: 2px; }
.news-item .date .d {
  font-size: 34px;
  font-weight: 700;
  color: var(--ink-900);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.news-item .date .ym {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
  letter-spacing: 0.06em;
}
.news-item .body { flex: 1; min-width: 0; }
.news-item .body h3 {
  font-size: clamp(17px, 1.4vw, 20px);
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 10px;
  line-height: 1.5;
  text-wrap: wrap;
}
.news-item .body p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--body);
  margin: 0 0 0.9em 0;
  text-wrap: wrap;
}
.news-item .body .meta { font-size: 13px; color: var(--gold-deep); font-weight: 600; }
.news-photos { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.news-photos img {
  width: 148px;
  height: 100px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  cursor: zoom-in;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.news-photos img:hover {
  transform: scale(1.05);
  box-shadow: var(--sh-1);
  border-color: var(--brand-blue);
}

/* ============ 灯箱 ============ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(6, 28, 38, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}
.lightbox[hidden] { display: none; }
.lightbox-img {
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--radius);
}
.lightbox-close {
  position: absolute;
  top: 16px;
  right: 26px;
  font-size: 40px;
  line-height: 1;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.2s var(--ease);
}
.lightbox-close:hover { opacity: 1; }
.lightbox-prev, .lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.85;
  transition: background 0.2s var(--ease), opacity 0.2s var(--ease);
}
.lightbox-prev { left: 22px; }
.lightbox-next { right: 22px; }
.lightbox-prev:hover, .lightbox-next:hover { background: rgba(255, 255, 255, 0.25); opacity: 1; }
.lightbox-count {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 14px;
  color: #fff;
  opacity: 0.85;
  letter-spacing: 0.08em;
}

/* ============ 联系页 ============ */
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 40px; }
.contact-card-full {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 2.2vw, 34px);
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.contact-card-full:hover { box-shadow: var(--sh-2); border-color: var(--line-strong); }
.contact-card-full h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 18px;
}
.contact-card-full p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--body);
  margin-bottom: 18px;
}
.contact-card-full .info-row {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: var(--body);
  margin-bottom: 12px;
  line-height: 1.7;
}
.contact-card-full .info-row:last-child { margin-bottom: 0; }
.contact-card-full .info-row strong {
  color: var(--heading);
  min-width: 40px;
  flex-shrink: 0;
  font-weight: 600;
}
/* 在线咨询卡片底部快捷按钮：与首页 final-cta 同款 flex 布局（电话/发邮件） */
.contact-card-full .cta-btns {
  display: flex;
  gap: 14px;
  flex-wrap: nowrap;
  margin-top: 24px;
}
.contact-card-full .cta-btns .btn { flex: 1 1 0; min-width: 0; justify-content: center; padding-left: 12px; padding-right: 12px; }
/* 白卡片里的 btn-ghost 需深色字深边框（原 btn-ghost 为深色背景设计，白底会隐身） */
.contact-card-full .cta-btns .btn-ghost {
  background: transparent;
  color: var(--heading);
  border-color: var(--line-strong);
}
.contact-card-full .cta-btns .btn-ghost:hover {
  background: rgba(44, 95, 124, 0.08);
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

/* ============ 招聘页 ============ */
.career-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 2.2vw, 34px);
  margin-bottom: 20px;
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.career-card:hover { box-shadow: var(--sh-2); border-color: var(--line-strong); }
.career-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 16px;
  line-height: 1.4;
}
.career-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--brand-blue);
  margin: 22px 0 10px;
}
.career-card ul { padding-left: 18px; }
.career-card li { font-size: 15px; line-height: 1.8; color: var(--body); margin-bottom: 8px; list-style: disc; }

/* ============ 滚动渐入 ============ */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.revealed { opacity: 1; transform: none; }

/* ============ 减少动效（无障碍降级） ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .hero-slide { animation: none !important; transform: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .hero-slogan .char { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* =========================================================
   响应式（四档：>1024 桌面 / ≤1024 小桌面 / ≤768 平板 / ≤480 手机）
   ========================================================= */

@media (max-width: 1024px) {
  :root { --pad-x: 36px; }

  .hero-inner { max-width: 100%; }
  .hero-slogan {
    position: static;
    max-width: none;
    margin: 16px 0 0;
    text-align: left;
    padding-right: 0;
    padding-left: 14px;
    border-right: none;
    border-left: 2px solid var(--gold);
  }

  .about-intro-grid { grid-template-columns: 1fr; gap: 44px; }
  .about-intro-grid .about-intro-media { max-width: 560px; }
  .about-quote { left: 0; bottom: -18px; }

  .product-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid, .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .client-grid, .clients-logo-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .stat + .stat::before { display: none; }

  .faq-inner { flex-direction: column; gap: 40px; }
  .faq-left { width: 100%; }

  /* 竖排时必须 stretch：否则 align-items:flex-start 会让主区宽度收缩到"内容宽度"
     （实测 1024 视口下主区仅 556 而非满宽 880），图文卡排不满 3 列。2026-09-12 修 */
  .pd-layout, .subpage-layout { flex-direction: column; align-items: stretch; }
  .pd-sidebar, .subpage-sidebar { width: 100%; }
  .subnav { position: static; }
  .subnav a { padding: 14px 20px; }

  .series-row { flex-direction: column; gap: 20px; }
  .series-row .left { width: 100%; }
}

@media (max-width: 768px) {
  :root { --pad-x: 22px; }

  /* 移动端导航：汉堡 + 下拉面板 */
  .main-nav, .site-header .btn-navy { display: none; }
  .nav-toggle { display: block; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    gap: 2px;
    position: absolute;
    top: 62px;
    left: var(--pad-x);
    right: var(--pad-x);
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 10px;
    box-shadow: var(--sh-3);
    border: 1px solid var(--line);
    z-index: 95;
    max-height: calc(100dvh - 84px);
    overflow-y: auto;
    animation: navDrop 0.22s var(--ease);
  }
  @keyframes navDrop {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: none; }
  }
  .main-nav.open a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 12px 16px;
    font-size: 16px;
    font-weight: 500;
    color: var(--heading);
    border-radius: var(--radius-sm);
  }
  .main-nav.open a:hover { background: var(--surface-soft); }
  .main-nav.open a.active { background: var(--surface-soft); color: var(--brand-blue); font-weight: 600; }
  .main-nav.open a::after { display: none; }
  /* 窄屏菜单内的"联系我们"：与其他菜单项视觉等重，用品牌蓝字保留 CTA 提示，hover 反转蓝底白字 */
  .main-nav.open .nav-contact {
    background: transparent;
    color: var(--brand-blue);
    font-weight: 600;
    padding: 12px 16px;
    margin-top: 4px;
    text-align: left;
    border-radius: var(--radius-sm);
  }
  .main-nav.open .nav-contact:hover { background: var(--brand-blue); color: #fff; }
  .main-nav.open .nav-contact.active { background: var(--surface-soft); color: var(--brand-blue); }
  .header-inner { height: 64px; gap: 16px; }
  .logo img { height: 48px; }
  .lang-switch { height: 32px; padding: 0 10px; font-size: 13px; }

  /* Hero 移动端 */
  .hero {
    min-height: clamp(400px, 62vh, 540px);
    aspect-ratio: auto;
    padding: 64px var(--pad-x) 56px;
  }
  .hero-slogan {
    display: block;
    position: static;
    max-width: none;
    margin: 16px 0 0;
    font-size: 15px;
    text-align: left;
    padding-right: 0;
    padding-left: 14px;
    border-right: none;
    border-left: 2px solid var(--gold);
  }
  .hero-dots { left: var(--pad-x); bottom: 22px; }
  .hero h1 { font-size: clamp(26px, 6vw, 34px); line-height: 1.25; }
  .hero-sub { max-width: 100%; }
  .hero-btns { flex-direction: column; align-items: stretch; }
  .hero-btns .btn { width: 100%; justify-content: center; }
  .hero-trust { font-size: 13px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .stat .num { font-size: 34px; }
  .stat .label { font-size: 13px; }

  .product-grid, .news-grid, .adv-grid, .svc-grid { grid-template-columns: 1fr; }
  .client-grid, .clients-logo-grid { grid-template-columns: repeat(2, 1fr); }
  .p-card .thumb { height: 180px; }

  .section-head { margin-bottom: 40px; }

  .series-row { padding: 26px; }

  .faq-left h2 { font-size: 26px; }
  .faq-item { padding: 20px 22px; }

  .footer-top { flex-direction: column; gap: 36px; }
  .footer-cols { gap: 40px; }

  .news-item { flex-direction: column; gap: 16px; }
  .news-item .date { text-align: left; display: flex; align-items: baseline; gap: 10px; }
  .news-item .date .ym { margin-top: 0; }

  .final-cta .cta-btns { flex-direction: column; }
  .final-cta .cta-btns .btn { width: 100%; }

  .pd-hero h1, .about-hero h1, .page-hero h1 { font-size: clamp(26px, 6vw, 34px); }
  /* 列数已交由 auto-fill 自动伸缩、图片高度交给 clamp() 随视口连续变化，
     媒体查询不再写死尺寸，只保留页面结构重组。2026-09-12 */

  .tl-card { padding: 24px 22px; gap: 18px; }
  .tl-card-title { font-size: 20px; }
  .tl-node-label { font-size: 11px; }

  .rd-photos { grid-template-columns: 1fr; max-width: 440px; gap: 18px; }

  /* tablet: R&D main cards + sub cards */
  .rd-stack { gap: 16px; }
  .rd-main-card { padding: 24px 26px; }
  .rd-main-card h2 { font-size: 20px; padding-bottom: 10px; }
  .rd-main-card > p { font-size: 14px; line-height: 1.8; }
  .rd-icon-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .rd-icon-grid.rd-2col { grid-template-columns: 1fr; }
  .rd-icon { width: 40px; height: 40px; margin-bottom: 10px; }
  .rd-icon svg { width: 20px; height: 20px; }

  /* tablet: About main cards + sub cards */
  .about-stack { gap: 16px; }
  .about-main-card { padding: 24px 26px; }
  .about-main-card h2 { font-size: 20px; }
  .about-main-card > p { font-size: 14px; }
  .about-mini-grid { grid-template-columns: 1fr; gap: 12px; }
}

/* 大屏手机 / 小平板竖屏（≤640）：图文卡改单列，图片铺满可用宽度，避免两列把图挤小 */
@media (max-width: 640px) {
  .pd-gallery-captioned {
    grid-template-columns: 1fr;
    max-width: 100%;
    gap: 22px;
  }
  .pd-gallery-captioned figcaption {
    margin-top: 10px; /* 单列无同行对齐需求，图注紧跟图片 */
    padding-top: 0;
  }
}

@media (max-width: 480px) {
  :root { --pad-x: 18px; }

  .hero {
    min-height: 620px;
    max-height: none;
    aspect-ratio: auto;
    padding: 44px var(--pad-x) 32px;
  }
  .hero .container { padding-bottom: 48px; }
  .hero h1 { font-size: 26px; line-height: 1.25; margin-bottom: 14px; }
  .hero-sub { font-size: 15px; line-height: 1.75; margin-bottom: 20px; }
  .hero-btns { gap: 12px; margin-bottom: 20px; }
  .hero .badge { font-size: 12px; padding: 7px 14px; margin-bottom: 22px; }
  .hero-slogan { font-size: 13px; letter-spacing: 0.06em; padding-left: 12px; margin: 10px 0 0; line-height: 1.6; }
  .hero-trust {
    font-size: 12px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 6px;
    column-gap: 16px;
    text-align: left;
  }
  .hero-trust span { white-space: normal; }
  .hero-dots { bottom: 16px; }

  .stats-grid { grid-template-columns: 1fr; gap: 0; }
  .stat {
    padding: 18px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
  .stat:first-child { border-top: none; }
  .stat .num { font-size: 32px; }
  .stat .label { font-size: 13px; }

  .client-grid, .clients-logo-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .client-logo { min-height: 120px; padding: 18px 10px 14px; }
  .client-logo img { height: 68px; }

  .p-card .thumb { height: 170px; }
  .p-card .body { padding: 20px; }
  .p-card h3 { font-size: 18px; }

  .adv-card { padding: 24px 20px; }
  .svc-card { padding: 24px 20px; }
  .svc-card h4 { font-size: 19px; }

  .section-head { margin-bottom: 32px; }
  .btn-lg { padding: 14px 24px; font-size: 15px; }

  .contact-card-full { padding: 24px 20px; }
  .contact-card-full h3 { font-size: 18px; }
  .contact-card-full .info-row { font-size: 14px; }

  .data-table { font-size: 13px; }
  .data-table th, .data-table td { padding: 11px 14px; }
  .data-table tbody td:first-child { width: 84px; }

  /* 单列后缩略图完整显示不裁切（结构相关的特例，保留）；
     其余尺寸全部由 clamp() 连续接管，不再按断点跳变。 */
  .pd-gallery:not(.pd-gallery-captioned) img { height: auto; max-height: 340px; object-fit: contain; }

  .tl-axis { gap: 8px; margin-bottom: 24px; }
  .tl-axis-start, .tl-axis-end { font-size: 13px; }
  .tl-stage { gap: 10px; }
  .tl-arrow { width: 40px; height: 40px; font-size: 16px; }
  .tl-card { padding: 20px 18px; }
  .tl-row { gap: 14px; padding: 12px 0; }
  .tl-row-year { flex-basis: 52px; font-size: 21px; }
  .tl-row-text { font-size: 14px; }
  .tl-node-label { display: none; }

  .lightbox-prev, .lightbox-next { width: 42px; height: 42px; font-size: 18px; }
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }

  .news-photos img { width: 132px; height: 90px; }

  .about-tags span { font-size: 12px; padding: 5px 12px; }
  .about-quote { position: static; margin-top: 16px; max-width: 100%; font-size: 14px; padding: 18px 20px; }

  /* mobile: R&D main cards + sub cards */
  .rd-stack { gap: 14px; }
  .rd-main-card { padding: 18px 20px; }
  .rd-main-card h2 { font-size: 18px; padding-bottom: 10px; }
  .rd-main-card h2 small { font-size: 11px; }
  .rd-main-card > p { font-size: 13px; line-height: 1.75; }
  .rd-icon-grid { grid-template-columns: 1fr; gap: 12px; margin-top: 14px; }
  .rd-icon-grid.rd-2col { grid-template-columns: 1fr; }
  .rd-icon-card { padding: 14px; }
  .rd-icon { width: 36px; height: 36px; margin-bottom: 8px; }
  .rd-icon svg { width: 18px; height: 18px; }
  .rd-icon-card h4 { font-size: 14px; margin-bottom: 4px; }
  .rd-icon-card > p { font-size: 12px; line-height: 1.65; }
  .rd-photos { grid-template-columns: 1fr; max-width: 440px; gap: 18px; }

  /* mobile: About main cards + sub cards */
  .about-stack { gap: 14px; }
  .about-main-card { padding: 18px 20px; }
  .about-main-card h2 { font-size: 18px; padding-bottom: 10px; margin-bottom: 10px; }
  .about-main-card h2 small { font-size: 11px; }
  .about-main-card > p { font-size: 13px; line-height: 1.75; }
  .about-main-card .figure { margin: 12px 0 0; }
  .about-mini-grid { grid-template-columns: 1fr; gap: 10px; margin-top: 12px; }
  .about-mini-card { padding: 14px; gap: 12px; }
  .about-mini-icon { width: 36px; height: 36px; }
  .about-mini-icon svg { width: 18px; height: 18px; }
  .about-mini-card h4 { font-size: 14px; margin-bottom: 3px; }
  .about-mini-card p { font-size: 12px; line-height: 1.6; }
  .about-cert-grid { grid-template-columns: 1fr; gap: 10px; }
  .about-cert { padding: 12px 14px; gap: 10px; }
  .about-cert-badge { width: 32px; height: 32px; font-size: 14px; border-radius: 7px; }
  .about-cert-text { font-size: 12px; }
  .about-tbl-card { padding: 2px 4px; }
}

/* === 技术研发页：4 张主卡 + 图标子卡（v2 风格） === */
.rd-stack { display: flex; flex-direction: column; gap: 20px; }
.rd-main-card {
  background: #fff;
  border: 1px solid var(--line-strong, #CFD8DE);
  border-radius: 14px;
  padding: 28px 32px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
  transition: all .25s;
}
.rd-main-card:hover { box-shadow: 0 6px 18px rgba(0,0,0,0.06); border-color: var(--brand-blue); }
.rd-main-card h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E8EEF1;
}
.rd-main-card h2 small {
  display: block;
  font-size: 12px;
  color: var(--faint, #888);
  font-weight: 400;
  margin-top: 2px;
}
.rd-main-card > p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--body, #333);
  margin-bottom: 0;
}
.rd-icon-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 18px; }
.rd-icon-grid.rd-2col { grid-template-columns: repeat(2, 1fr); }
.rd-icon-card {
  background: #fff;
  border: 1px solid #E2EAEE;
  border-radius: 10px;
  padding: 18px;
  transition: all .25s;
}
.rd-icon-card:hover { border-color: var(--brand-green); background: #FAFCFB; }
.rd-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, #2C5F7C 0%, #3A7A9E 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}
.rd-icon.green { background: linear-gradient(135deg, #2D7A30 0%, #3A9140 100%); }
.rd-icon.gold { background: linear-gradient(135deg, #B8924B 0%, #D6BB85 100%); }
.rd-icon svg { width: 22px; height: 22px; }
.rd-icon-card h4 { font-size: 15px; font-weight: 600; color: var(--heading); margin-bottom: 10px; }
.rd-icon-card > p { font-size: 13px; line-height: 1.7; color: #666; margin: 0; }

/* 兼容旧 .rd-photos（如果老页面引用则保留） */
.rd-photos { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 18px; }
.rd-photo { flex: 1; min-width: 220px; }
.rd-photo img { width: 100%; border-radius: 8px; }
.rd-photo figcaption { font-size: 13px; color: #666; margin-top: 6px; text-align: center; }

/* ============ 关于我们页面：与研发页同源的卡片设计语言 ============ */
.about-stack { display: flex; flex-direction: column; gap: 20px; }
.about-main-card {
  background: #fff;
  border: 1px solid #CFD8DE;
  border-radius: 14px;
  padding: 28px 32px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
  transition: all .25s;
}
.about-main-card:hover { box-shadow: 0 6px 18px rgba(0,0,0,0.06); border-color: var(--brand-blue); }
.about-main-card h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E8EEF1;
}
.about-main-card h2 small {
  display: block;
  font-size: 12px;
  color: #888;
  font-weight: 400;
  margin-top: 2px;
}
.about-main-card > p { font-size: 14px; line-height: 1.85; color: #333; margin-bottom: 10px; text-wrap: wrap; }
.about-main-card > p:last-child { margin-bottom: 0; }
.about-main-card .figure { margin: 18px 0 4px; }
.about-main-card .figure img { width: 100%; border-radius: 10px; }
.about-main-card .figure figcaption { font-size: 13px; color: #666; margin-top: 8px; text-align: center; }

/* 关于我们：核心产品体系 4 张 mini 横向卡 */
.about-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 18px;
}
.about-mini-card {
  background: #FAFCFB;
  border: 1px solid #E2EAEE;
  border-radius: 10px;
  padding: 18px 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: all .25s;
}
.about-mini-card:hover { border-color: var(--brand-green); background: #fff; transform: translateY(-1px); }
.about-mini-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 9px;
  background: linear-gradient(135deg, #2C5F7C 0%, #3A7A9E 100%);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
}
.about-mini-card:nth-child(2) .about-mini-icon { background: linear-gradient(135deg, #2D7A30 0%, #3A9140 100%); }
.about-mini-card:nth-child(3) .about-mini-icon { background: linear-gradient(135deg, #B8924B 0%, #D6BB85 100%); }
.about-mini-card:nth-child(4) .about-mini-icon { background: linear-gradient(135deg, #5C4A7C 0%, #7E6896 100%); }
.about-mini-icon svg { width: 20px; height: 20px; }
.about-mini-body { flex: 1; min-width: 0; }
.about-mini-card h4 { font-size: 15px; font-weight: 600; color: var(--heading); margin: 0 0 10px; }
.about-mini-card p { font-size: 13px; line-height: 1.6; color: #555; margin: 0 0 6px; text-wrap: wrap; }
.about-mini-card a { font-size: 13px; font-weight: 600; color: var(--brand-blue); }
.about-mini-card a:hover { color: var(--brand-green); }

/* 修正（2026-09-13）：上面 ≤1024 / ≤640 两条 .about-mini-grid 单列声明写在基础规则
   （.about-mini-grid{grid-template-columns:repeat(2,1fr)}，位置更靠后）之前，
   特异性相同、源序在后者胜出 → 单列从未生效，手机端恒为 2 列。
   中文文案可逐字断行而未暴露；英文长单词 min-content 约 202px，第 2 列被撑破视口。
   此处按原设计意图补一条源序在后的声明，不改任何文字与桌面端布局。 */
@media (max-width: 1024px) {
  .about-mini-grid { grid-template-columns: 1fr; }
}

/* 关于我们：table 嵌浅色卡 */
.about-tbl-card {
  background: #FAFCFB;
  border: 1px solid #E2EAEE;
  border-radius: 10px;
  padding: 4px 8px;
  margin: 16px 0;
  transition: all .25s;
}
.about-tbl-card:hover { border-color: var(--brand-green); }

/* 关于我们：资质 grid（2×4） */
.about-cert-grid {
  display: grid;
  /* 本区主区约 780px（关于我们页为「主区 + 侧栏」双栏），240 阈值才稳定出 3 列；
     沿站内惯用的 260 会在大屏退化成 2 列、与平板列数倒挂。2026-09-13 */
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr));
  gap: 12px;
  margin-top: 16px;
}
/* 资质证书图卡：点击放大（复用全站灯箱），图注在下方 */
.about-cert-photo {
  margin: 0;
  background: #fff;
  border: 1px solid #E2EAEE;
  border-radius: 10px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all .25s;
}
.about-cert-photo img {
  display: block;
  width: 100%;
  height: auto; /* 必须：覆盖 HTML height 属性的像素暗示，否则 aspect-ratio 失效、卡片被撑成竖条 */
  aspect-ratio: 8 / 5;
  object-fit: contain;
  background: #F6F9FB;
  border-radius: 6px;
  cursor: zoom-in;
}
.about-cert-photo figcaption {
  font-size: 13px;
  line-height: 1.5;
  color: var(--heading);
  text-align: center;
  margin: 0;
}
.about-cert-photo:hover {
  border-color: var(--brand-blue);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(44,95,124,.06);
}
.about-cert {
  background: #fff;
  border: 1px solid #E2EAEE;
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all .25s;
}
.about-cert:hover { border-color: var(--brand-blue); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(44,95,124,0.06); }
.about-cert-badge {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, #2C5F7C 0%, #3A7A9E 100%);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.about-cert:nth-child(2) .about-cert-badge { background: linear-gradient(135deg, #2D7A30 0%, #3A9140 100%); }
.about-cert:nth-child(3) .about-cert-badge { background: linear-gradient(135deg, #B8924B 0%, #D6BB85 100%); }
.about-cert:nth-child(4) .about-cert-badge { background: linear-gradient(135deg, #5C4A7C 0%, #7E6896 100%); }
.about-cert:nth-child(5) .about-cert-badge { background: linear-gradient(135deg, #B8553A 0%, #D17866 100%); }
.about-cert:nth-child(6) .about-cert-badge { background: linear-gradient(135deg, #2C5F7C 0%, #3A7A9E 100%); }
.about-cert:nth-child(7) .about-cert-badge { background: linear-gradient(135deg, #2D7A30 0%, #3A9140 100%); }
.about-cert-text { font-size: 13px; color: var(--heading); line-height: 1.5; flex: 1; }

/* ==== 新闻资讯：按年份分组（本年度直接展开 / 往期归档折叠） ==== */
.news-year { margin-bottom: 64px; }
.news-year-current .news-year-header { border-bottom: 2px solid var(--brand-blue); }
.news-year-header {
  display: flex; align-items: baseline; justify-content: space-between;
  padding-bottom: 16px; margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap; gap: 12px 24px;
}
.news-year-title {
  font-size: 44px; font-weight: 800; line-height: 1;
  color: var(--brand-blue); letter-spacing: -0.02em;
  font-feature-settings: "tnum";
  margin: 0;
}
.news-year-meta {
  font-size: 14px; color: var(--heading-muted, #6B7780);
  font-weight: 500; letter-spacing: 0.06em;
}
.news-year-body { display: block; }
@media (max-width: 640px) {
  .news-year-title { font-size: 36px; }
  .news-year { margin-bottom: 44px; }
  .news-year-header { padding-bottom: 12px; margin-bottom: 22px; }
}

/* 折叠块（往期归档） */
.news-year-archive .news-year-fold { margin: 0; }
.news-year-archive details > summary {
  list-style: none; cursor: pointer; user-select: none;
  display: flex; align-items: center; justify-content: space-between;
  padding: 26px 28px;
  background: rgba(44, 95, 124, 0.04);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  transition: background-color .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.news-year-archive details > summary:hover {
  background: rgba(44, 95, 124, 0.08);
  border-color: var(--brand-blue);
  box-shadow: 0 6px 20px -10px rgba(44, 95, 124, 0.25);
}
.news-year-archive details > summary::-webkit-details-marker { display: none; }
.news-year-archive .news-year-fold > summary > .news-year-title { font-size: 32px; }
.news-year-archive .news-year-toggle {
  display: inline-block; width: 28px; height: 28px;
  position: relative; flex-shrink: 0; margin-left: 16px;
  transition: transform .3s var(--ease);
}
.news-year-archive .news-year-toggle::before,
.news-year-archive .news-year-toggle::after {
  content: ""; position: absolute; left: 4px; right: 4px; top: 50%;
  height: 2px; background: var(--brand-blue); border-radius: 1px;
}
.news-year-archive .news-year-toggle::after { transform: rotate(90deg); }
.news-year-archive details[open] > summary > .news-year-toggle { transform: rotate(180deg); }
.news-year-archive details[open] > summary > .news-year-toggle::after { opacity: 0; }
.news-year-archive .news-year-fold > .news-year-body {
  padding: 28px 8px 4px; display: block;
}
@media (max-width: 640px) {
  .news-year-archive .news-year-fold > summary > .news-year-title { font-size: 26px; }
  .news-year-archive details > summary { padding: 18px 20px; }
  .news-year-archive .news-year-fold > .news-year-body { padding: 18px 0 0; }
}


/* ============ 首页产品体系网格：五张系列卡 · 桌面 3 列、第二行两张居中（2026-09-13） ============ */
/* 仅作用于首页的 .product-grid--five；其余 66 个页面共用的 .product-grid 保持原 4 列不变。
   实现：六列等分栅格，每张卡 span 2（=桌面视觉 3 列）；第 4、5 张各从列 2 / 列 4 起，
   使第二行两张卡落在中间四格内、左右各留一格 → 居中。 */
.product-grid--five {
  grid-template-columns: repeat(6, 1fr);
}
.product-grid--five > * { grid-column: span 2; }
.product-grid--five > *:nth-child(4) { grid-column: 2 / span 2; }
.product-grid--five > *:nth-child(5) { grid-column: 4 / span 2; }

/* ≤1024：退回两列（与本站既有降级一致），并解除六列定位 */
@media (max-width: 1024px) {
  .product-grid--five { grid-template-columns: repeat(2, 1fr); }
  .product-grid--five > *,
  .product-grid--five > *:nth-child(4),
  .product-grid--five > *:nth-child(5) { grid-column: auto; }
}
/* ≤768：单列 */
@media (max-width: 768px) {
  .product-grid--five { grid-template-columns: 1fr; }
}