/* ============================================================
   检测仪器行业企业官网 样式表
   设计原则：
   - 移动优先（Mobile First），断点 640 / 900 / 1200
   - 使用 CSS 自定义属性便于统一换肤
   - 配色取自行业惯用的科技蓝 + 青绿，营造专业、可信赖感
   - 所有交互元素保留可见焦点样式，满足 WCAG 2.1 AA
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --c-primary: #1a5fb4;
  --c-primary-dark: #134a8e;
  --c-primary-light: #e8f0fb;
  --c-accent: #00a3a3;
  --c-accent-dark: #00807f;
  --c-text: #1c2733;
  --c-text-2: #4a5a6a;
  --c-text-3: #7d8b99;
  --c-line: #e2e8ee;
  --c-bg: #ffffff;
  --c-bg-alt: #f5f8fb;
  --c-bg-dark: #0e2740;
  --c-danger: #d64545;

  --radius: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(16, 40, 70, .06), 0 1px 2px rgba(16, 40, 70, .04);
  --shadow: 0 4px 16px rgba(16, 40, 70, .08);
  --shadow-lg: 0 12px 32px rgba(16, 40, 70, .12);
  --container: 1200px;
  --header-h: 72px;
  --ease: cubic-bezier(.4, 0, .2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  /* 数字滚动动画关闭，直接呈现终值 */
  .stat__num { transition: none !important; }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 { margin: 0 0 .5em; line-height: 1.35; font-weight: 700; }
p { margin: 0 0 1em; }
a { color: var(--c-primary); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--c-accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

/* 可见焦点样式（无障碍必需） */
:focus-visible {
  outline: 3px solid var(--c-accent);
  outline-offset: 2px;
  border-radius: 3px;
}

/* 屏幕阅读器专用文本 */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* 跳转链接 */
.skip-link {
  position: absolute; top: -100px; left: 8px; z-index: 999;
  background: var(--c-primary); color: #fff; padding: 10px 18px;
  border-radius: 0 0 var(--radius) var(--radius);
}
.skip-link:focus { top: 0; color: #fff; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
.container.narrow { max-width: 860px; }

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  cursor: pointer;
  transition: all .22s var(--ease);
  text-align: center;
}
.btn--primary { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.btn--primary:hover { background: var(--c-primary-dark); border-color: var(--c-primary-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }

.btn--outline { background: transparent; color: var(--c-primary); border-color: var(--c-primary); }
.btn--outline:hover { background: var(--c-primary); color: #fff; }

.btn--ghost { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.5); backdrop-filter: blur(4px); }
.btn--ghost:hover { background: #fff; color: var(--c-primary); }

.btn--ghost-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.btn--ghost-light:hover { background: #fff; color: var(--c-primary); border-color: #fff; }

.btn--light { background: #fff; color: var(--c-bg-dark); border-color: #fff; }
.btn--light:hover { background: var(--c-accent); color: #fff; border-color: var(--c-accent); }

.btn--lg { padding: 13px 30px; font-size: 15px; }
.btn--sm { padding: 7px 16px; font-size: 13px; }
.btn--block { display: flex; width: 100%; }

/* ============================================================
   顶部信息条
   ============================================================ */
.topbar {
  background: var(--c-bg-dark);
  color: rgba(255,255,255,.78);
  font-size: 13px;
}
.topbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; height: 38px;
}
.topbar__contact { display: flex; gap: 22px; }
.topbar__item strong { color: #fff; font-weight: 600; letter-spacing: .3px; }
.topbar__slogan { letter-spacing: .5px; }

/* ============================================================
   头部导航
   ============================================================ */
.header {
  position: sticky; top: 0; z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--c-line);
  transition: box-shadow .25s var(--ease);
}
.header.is-stuck { box-shadow: var(--shadow); }

.header__inner {
  display: flex; align-items: center; gap: 26px;
  height: var(--header-h);
}

/* Logo */
.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo__mark { display: flex; }
.logo__mark svg { display: block; }
/*
 * 后台上传的自定义 Logo
 * ──────────────────────────────────────────────────────────────
 * 上传的是一张**方形图标**（与内置 SVG 标同款），不是「图标+文字」的横版合成图，
 * 所以按方形标志处理：固定 40×40，与内置 `.logo__mark svg` 视觉等宽。
 * 站名/标语文字由 `.logo__text` 渲染，**不依赖图片内容**。
 *
 * ⚠️ 不要改回 `height:44px; width:auto; max-width:210px` ——
 *    那是给「横版合成 Logo」用的；配方形图会显示成一个小图标、
 *    并且因为原来 `if (site.logo)` 分支把文字整段省掉了，
 *    页面上就只剩一个孤零零的图标（用户反馈的「少了文字部分」）。
 */
.logo__img {
  display: block;
  width: 40px; height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}
.logo__text { display: flex; flex-direction: column; line-height: 1.2; }
.logo__name { font-size: 19px; font-weight: 800; color: var(--c-text); letter-spacing: .5px; }
.logo__sub { font-size: 11px; color: var(--c-text-3); font-style: normal; letter-spacing: 1.2px; }

/* 主导航 */
.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: 2px; }
.nav__item { position: relative; }

.nav__link {
  display: flex; align-items: center; gap: 5px;
  padding: 10px 14px;
  font-size: 15px; font-weight: 500;
  color: var(--c-text);
  border-radius: var(--radius);
  position: relative;
}
.nav__link:hover { color: var(--c-primary); background: var(--c-primary-light); }
.nav__link.is-active { color: var(--c-primary); font-weight: 700; }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 2.5px; background: var(--c-primary); border-radius: 2px;
}
.nav__caret {
  width: 6px; height: 6px; border-right: 1.6px solid currentColor; border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translateY(-2px); opacity: .55;
}

/* 二级下拉 */
.submenu {
  position: absolute; top: 100%; left: 0; min-width: 180px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all .22s var(--ease);
  z-index: 20;
}
.nav__item--has-sub:hover .submenu,
.nav__item--has-sub:focus-within .submenu { opacity: 1; visibility: visible; transform: translateY(0); }
.submenu a {
  display: block; padding: 9px 14px; border-radius: 6px;
  font-size: 14px; color: var(--c-text-2);
}
.submenu a:hover { background: var(--c-primary-light); color: var(--c-primary); }

/* 巨型菜单（产品） */
.megamenu {
  /* 锚点：.nav__item--has-sub（position:relative）。
     18 个分类需要 ~1280px，远宽于导航项，故用 left:50% + translateX(-50%)
     居中；越界由 main.js 的水平钳制（--mm-shift）修正。 */
  position: absolute; top: 100%; left: 50%;
  /* --mm-shift 由 main.js 写入（默认 0），保证面板不越出视口左右边界 */
  transform: translate(calc(-50% + var(--mm-shift, 0px)), 8px);
  width: min(1280px, calc(100vw - 40px));
  max-width: calc(100vw - 40px);
  /* 高度预算：面板上边缘在导航项底部（约 header 高度），
     故可用高度 = 100vh − 头部高(72) − 上边缘余量(约 46) − 底部安全边距(20)。
     用 138px 常量覆盖常见情形；不足时 inner 内部滚动，末行仍可见。 */
  max-height: calc(100vh - 138px);
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden;
  transition: all .24s var(--ease);
  z-index: 20;
  padding: 22px;
}
.nav__item--has-sub:hover .megamenu,
.nav__item--has-sub:focus-within .megamenu {
  opacity: 1; visibility: visible;
  transform: translate(calc(-50% + var(--mm-shift, 0px)), 0);
}

.megamenu__inner {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px 22px;
  /* 由 flex 父级分配剩余高度；超出则内部滚动（末行仍可见） */
  flex: 1 1 auto; min-height: 0;
  overflow-y: auto; overscroll-behavior: contain;
  /* 细滚动条，避免挤压列宽 */
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 0, 0, .28) transparent;
}
.megamenu__col {
  padding: 7px 0; border-bottom: 1px dashed var(--c-line);
  min-width: 0;
  /* 避免跨行时边框错位：让每列高度自适应内容 */
}
.megamenu__title {
  display: block; font-size: 14.5px; font-weight: 700; color: var(--c-text);
  padding: 3px 0 6px; line-height: 1.35;
}
.megamenu__title:hover { color: var(--c-primary); }
.megamenu__list { display: flex; flex-wrap: wrap; gap: 3px 12px; padding-bottom: 3px; }
.megamenu__list li { line-height: 1.5; }
.megamenu__list a { font-size: 13px; color: var(--c-text-3); }
.megamenu__list a:hover { color: var(--c-primary); }
.megamenu__foot {
  flex: 0 0 auto;
  text-align: right; padding-top: 12px; margin-top: 12px;
  border-top: 1px solid var(--c-line);
}

/* 头部搜索 */
.header__search {
  display: flex; align-items: center;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  border-radius: 22px;
  padding: 0 4px 0 14px;
  height: 38px;
  transition: border-color .2s, box-shadow .2s;
}
.header__search:focus-within { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(26,95,180,.1); background:#fff; }
.header__search input {
  border: 0; background: transparent; outline: none;
  width: 130px; font-size: 13.5px; color: var(--c-text);
}
.header__search input::placeholder { color: var(--c-text-3); }
.header__search button {
  border: 0; background: transparent; color: var(--c-text-3);
  display: flex; align-items: center; padding: 8px; border-radius: 50%;
}
.header__search button:hover { color: var(--c-primary); background: var(--c-primary-light); }

/* 汉堡按钮 */
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: 0; padding: 10px; margin-left: auto;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--c-text); border-radius: 2px; transition: .25s; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   首屏 Banner
   ============================================================ */
.hero { position: relative; background: var(--c-bg-dark); }
/*
 * 轮播区尺寸（2026-10-05 统一尺寸 + 旧站素材版）
 * ────────────────────────────────────────────────────────────────────
 * 用户三项要求：
 *   ① 切换方式参考旧站 → 保留左右箭头（40×40、距边 25px）
 *   ② 幻灯片统一尺寸 → 容器固定，切换时不跳动
 *   ③ 展现时铺满 + 图片平铺缩放
 * 另：**去掉底部圆点**（旧站 show_nav=0，本就不显示圆点）
 *
 * 为什么是 1.92:1（不是 16:9）
 * ────────────────────────────────────────────────────────────────────
 * 已改用**旧站同源素材**（4 张，全部 1920 宽）：
 *   banner-brand-1920.jpg          1920×1080 → 1.778
 *   banner-oil-analyzer-1920.jpg   1920×1000 → 1.920
 *   banner-kjeldahl-1920.jpg       1920×1000 → 1.920
 *   banner-water-analyzer-1920.jpg 1920×1000 → 1.920
 * 取 **1.92:1** 时：三张 1.920 的零变形，一张 1.778 的仅 7.4% 变形 — 肉眼几乎无感。
 * （对比旧方案：本站原生素材 1.50/1.75/3.69，差异高达 146%，怎么调都别扭。）
 * ⚠️ 这就是旧站「比例清晰协调」的根本原因 —— **素材比例本身就统一**，
 *    而不是靠 CSS 补救。**换素材时务必保持 1920×1000 上下的比例**。
 *
 * 关键：`object-fit: fill`
 *   容器比例固定，图片**拉伸填满** —— 不裁切、不留白。
 *   ⚠️ **不要改回 contain**（露出深色背景带）
 *   ⚠️ **不要改回 cover**（裁掉超宽图两侧内容）
 * ────────────────────────────────────────────────────────────────────
 */
.hero__slider {
  position: relative;
  width: 100%;
  height: auto;
  /* 固定 1.92:1（对齐旧站素材）；超宽屏限制最大高度，避免首屏被整段占满。
     ⚠️ 上限取 88vh / 900px（曾用 78vh / 760px）：
        素材统一为 1.92:1 后，760px 在许多大屏上过早触顶，
        把有效比例压到 2.5+，反而把好素材拉伸变形（1920 屏实测 +42%）。
        88vh / 900px 下 1440 与 1280 可零变形，1920 也仅 +11%。 */
  aspect-ratio: 192 / 100;
  max-height: min(88vh, 900px);
  background: var(--c-bg-dark);
  overflow: hidden;
}
.hero__slide {
  position: absolute; inset: 0;
  opacity: 0; visibility: hidden;
  transition: opacity .7s var(--ease);
}
.hero__slide.is-active { opacity: 1; visibility: visible; }

/* 图片：**平铺铺满** —— `fill` 拉伸填满容器，不裁切、不留白。
   非等比缩放会让图片轻微变形，这是「保住完整画面」的代价（用户已确认）。 */
.hero__bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: fill;
  object-position: center;
}
.hero__bg--grad {
  background:
    radial-gradient(1100px 420px at 78% 12%, rgba(0,163,163,.32), transparent 62%),
    linear-gradient(135deg, #0b2038 0%, #123c66 52%, #1a5fb4 100%);
}
.hero__bg--grad::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(900px 400px at 30% 50%, #000, transparent 75%);
}

/*
 * 首屏与参考站一致：纯图片轮播，无标题/按钮浮层。
 * 整张图可点（.hero__link 铺满 slide），文字语义由 aria-label 承担。
 */
.hero__link { position: absolute; inset: 0; z-index: 3; }

/* ------------------------------------------------------------
   轮播左右箭头（唯一的切换入口，旧站 show_nav=0 无圆点）
   ------------------------------------------------------------
   参数照搬参考站（yp-yq.com）的 unslider 配置：
     nav_arrow_w_size / nav_arrow_h_size = 40 × 40
     nav_margin_left_size / right_size   = 25
   → 箭头 40×40，距边缘各 25px，垂直居中。
   图标形态同参考站：白色半透明粗箭头，悬停变亮 + 轻微放大。
   点击热区在移动端放宽到 ≥44px（无障碍规范）。
   ⚠️ 因为已删除底部圆点，箭头是**唯一的手动切换方式**，
      不要误删；自动播放 8s 仍可兜底。
   ------------------------------------------------------------ */
.hero__nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  padding: 0; border: 0; background: none;
  cursor: pointer; z-index: 4;
  color: rgba(255, 255, 255, .62);          /* 默认半透明白 */
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, .32));
  transition: color .22s var(--ease), transform .22s var(--ease), opacity .22s var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.hero__nav--prev { left: 25px; }             /* 旧站 nav_margin_left_size = 25 */
.hero__nav--next { right: 25px; }            /* 旧站 nav_margin_right_size = 25 */
.hero__nav svg { width: 100%; height: 100%; display: block; pointer-events: none; }
.hero__nav:hover,
.hero__nav:focus-visible {
  color: #fff;
  transform: translateY(-50%) scale(1.12);
  outline: none;
}
.hero__nav:active { transform: translateY(-50%) scale(.96); }
/* 键盘聚焦也给出可见焦点环 */
.hero__nav:focus-visible {
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, .7);
}
/* 只有单张幻灯片时不显示箭头（由模板控制渲染，此处兜底） */
.hero__slider[data-single] .hero__nav { display: none; }

/*
 * 已移除 .hero__dots / .hero__dot（底部圆点指示器）
 * 用户要求删除，改为与旧站一致：**只有左右箭头，没有圆点**
 * （旧站 unslider 配置 show_nav=0、nav_arrow=1）。
 * 若日后需要恢复，可从 .tmp/style.css.bak-hero2-* 找回。
 */

/*
 * 已移除 .hero__strip（首屏服务亮点条）：
 * 用户要求删除。相关样式一并清除，避免死代码。
 * 若日后需要恢复，可从 git 历史中找回 index.ejs 的 strip 段落。
 */

/* ============================================================
   通用 Section
   ============================================================ */
.section { padding: 78px 0; }
.section--alt { background: var(--c-bg-alt); }
.section--dark { background: var(--c-bg-dark); }

.section__head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.section__head--between {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; max-width: none; text-align: left; margin-bottom: 36px;
}
.section__eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px;
  color: var(--c-accent); text-transform: uppercase; margin-bottom: 8px;
}
.section__title {
  font-size: clamp(23px, 2.6vw, 32px);
  color: var(--c-text); letter-spacing: .3px; margin-bottom: 12px;
}
.section__title--light { color: #fff; }
.section__desc { font-size: 15px; color: var(--c-text-2); margin: 0; }
.section__desc--light { color: rgba(255,255,255,.72); }
.section__more { font-size: 14px; font-weight: 600; white-space: nowrap; padding-bottom: 3px; }
.section__foot { text-align: center; margin-top: 44px; }

/* ============================================================
   公司简介
   ============================================================ */
.intro { display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; align-items: center; }
.intro__lead { font-size: 17px; font-weight: 600; color: var(--c-primary); margin-bottom: 14px; }
.intro__body { color: var(--c-text-2); font-size: 15px; margin-bottom: 26px; }
.intro__body p:last-child { margin-bottom: 0; }

.intro__stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--c-line); border-radius: var(--radius-lg); overflow: hidden; }
.stat { background: var(--c-bg-alt); padding: 30px 22px; text-align: center; }
.stat--box { border-radius: var(--radius); }
/*
 * 数据指标数字
 * - tabular-nums：等宽字形，计数时每个数字占位一致
 * - min-width: 4ch：预留到最大位数（如 5000）所需宽度，
 *   否则数字从 1 位涨到 4 位的过程中，居中的文本块会持续伸缩，视觉上很跳
 * - margin: 0 auto + inline-block：让「数字 + 后缀」整体居中，不被 min-width 拉偏
 */
.stat__num {
  display: inline-block;
  min-width: 4ch;
  margin: 0 auto;
  font-size: clamp(28px, 3.2vw, 38px); font-weight: 800;
  color: var(--c-primary); line-height: 1.1; letter-spacing: -.5px;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}
.stat__num em { font-size: .45em; font-style: normal; font-weight: 700; margin-left: 2px; }
.stat__label { display: block; font-size: 13.5px; color: var(--c-text-3); margin-top: 6px; }

/* ============================================================
   产品系列卡片
   ============================================================ */
/*
 * 产品系列卡片 —— 严格对齐参考站 www.yp-yq.com 的「左图右文」几何：
 *   卡片 380×220，纯白、直角、无边框无阴影
 *   图标 left:40 / top:50，80×80
 *   标题 left:140 / top:60，24px / 700 / #000
 *   描述 left:140 / top:100，宽 190，14px / #888 / line-height 180%
 *   网格 3 列，列距 30px、行距 30px（380*3 + 30*2 = 1200）
 * 用 padding + flex 复刻这套坐标，避免绝对定位在窄屏下不可控。
 */
.series-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
}
.series-card {
  display: flex; align-items: flex-start;
  gap: 20px;                       /* 40(图左) + 80(图宽) + 20 = 140 → 文字起点 */
  min-height: 220px;
  padding: 50px 40px;              /* 上 50 对齐 top:50；左 40 对齐 left:40 */
  background: #fff;
  transition: box-shadow .26s var(--ease), transform .26s var(--ease);
  position: relative; overflow: hidden;
  height: 100%;
}
.series-card:hover { box-shadow: 0 12px 34px rgba(13, 39, 64, .12); transform: translateY(-4px); }
/* 图标：80×80 定尺，参考站为绿色线性图标 */
.series-card__icon { flex: 0 0 80px; width: 80px; height: 80px; margin-top: 10px; }
.series-card__icon img {
  display: block; width: 80px; height: 80px; object-fit: contain;
}
.series-card__body { flex: 1 1 auto; min-width: 0; }
/* 标题 top:60，即相对卡片顶 60px；卡片 padding-top 50 → margin-top 10 */
.series-card__title {
  font-size: 24px; font-weight: 700; color: #000;
  line-height: 1.32; margin: 10px 0 0;
}
.series-card:hover .series-card__title { color: var(--c-primary); }
/* 描述 top:100；60 + 40(标题高) = 100 → margin-top 0 */
.series-card__desc {
  font-size: 14px; color: #888; line-height: 1.8;
  margin: 0; max-width: 190px;
}
.series-card__more { display: none; }

/* 带图版：图片占顶部，文字在下方 */
.series-card--img { padding: 0; overflow: hidden; }
.series-card--img .series-card__media {
  display: block; aspect-ratio: 5 / 3; overflow: hidden; background: var(--c-bg-alt);
}
.series-card--img .series-card__media img {
  width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease);
}
.series-card--img:hover .series-card__media img { transform: scale(1.06); }
.series-card--img .series-card__title { padding: 20px 24px 0; }
.series-card--img .series-card__desc { padding: 0 24px 24px; margin-bottom: 0; }

/* ============================================================
   产品卡片
   ============================================================ */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.p-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  overflow: hidden; transition: all .26s var(--ease);
}
.p-card:hover { border-color: transparent; box-shadow: var(--shadow-lg); transform: translateY(-4px); }

.p-card__media {
  position: relative; display: block;
  aspect-ratio: 4 / 3; background: var(--c-bg-alt);
  overflow: hidden;
}
.p-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.p-card:hover .p-card__media img { transform: scale(1.06); }
.p-card__ph {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: #b9c8d6;
}
.p-card__badge {
  position: absolute; top: 10px; left: 10px;
  background: var(--c-accent); color: #fff;
  font-size: 11.5px; font-weight: 700; padding: 3px 9px; border-radius: 20px;
  letter-spacing: .5px;
}

.p-card__body { padding: 16px 18px 18px; display: flex; flex-direction: column; flex: 1; }
.p-card__title { font-size: 15.5px; line-height: 1.5; margin-bottom: 7px; }
.p-card__title a { color: var(--c-text); }
.p-card__title a:hover { color: var(--c-primary); }
.p-card__model { font-size: 12.5px; color: var(--c-text-3); margin-bottom: 8px; }
.p-card__model span { color: var(--c-text-2); font-weight: 600; }
.p-card__summary {
  font-size: 13px; color: var(--c-text-2); line-height: 1.6;
  margin-bottom: 14px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.p-card__foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; padding-top: 12px; border-top: 1px solid var(--c-line);
}
.p-card__cat { font-size: 12px; }
.p-card__cat a { color: var(--c-text-3); }
.p-card__cat a:hover { color: var(--c-primary); }
.p-card__price { font-size: 13.5px; font-weight: 700; color: var(--c-danger); white-space: nowrap; }
.p-card__price:only-child { color: var(--c-text-3); font-weight: 500; }

/* ============================================================
   解决方案卡片（深色区）
   ============================================================ */
.sol-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.sol-card {
  display: block; padding: 30px 24px;
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  transition: all .28s var(--ease);
}
.sol-card:hover {
  background: rgba(255,255,255,.1);
  border-color: var(--c-accent);
  transform: translateY(-5px);
}
.sol-card__no {
  display: block; font-size: 26px; font-weight: 800;
  color: var(--c-accent); opacity: .6; margin-bottom: 12px; letter-spacing: 1px;
}
.sol-card__title { font-size: 17px; color: #fff; margin-bottom: 10px; }
.sol-card__desc { font-size: 13.5px; color: rgba(255,255,255,.66); line-height: 1.7; margin-bottom: 16px; }
.sol-card__link { font-size: 13px; color: var(--c-accent); font-weight: 600; }

/* ============================================================
   案例卡片
   ============================================================ */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  overflow: hidden; transition: all .26s var(--ease);
}
.case-card:hover { border-color: transparent; box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.case-card__media { aspect-ratio: 16 / 10; background: var(--c-bg-alt); overflow: hidden; }
.case-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.case-card:hover .case-card__media img { transform: scale(1.05); }
.case-card__ph {
  display: flex; align-items: center; justify-content: center; height: 100%;
  background: linear-gradient(135deg, #e8f0fb, #d9ecec);
  color: var(--c-primary); font-size: 17px; font-weight: 700; letter-spacing: 2px;
}
.case-card__body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.case-card__title { font-size: 16px; color: var(--c-text); margin-bottom: 8px; line-height: 1.5; }
.case-card:hover .case-card__title { color: var(--c-primary); }
.case-card__desc { font-size: 13.5px; color: var(--c-text-2); line-height: 1.65; margin-bottom: 14px; flex: 1; }
.case-card__tag {
  align-self: flex-start; font-size: 11.5px; color: var(--c-primary);
  background: var(--c-primary-light); padding: 3px 11px; border-radius: 20px; font-weight: 600;
}

/* ============================================================
   新闻卡片
   ============================================================ */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.news-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 24px 22px; display: flex; flex-direction: column;
  transition: all .26s var(--ease);
}
.news-card:hover { border-color: transparent; box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.news-card__cat {
  align-self: flex-start; font-size: 11.5px; font-weight: 700;
  color: var(--c-accent); background: rgba(0,163,163,.1);
  padding: 3px 10px; border-radius: 4px; margin-bottom: 14px;
}
.news-card__title { font-size: 15.5px; line-height: 1.55; margin-bottom: 10px; }
.news-card__title a { color: var(--c-text); }
.news-card__title a:hover { color: var(--c-primary); }
.news-card__desc {
  font-size: 13px; color: var(--c-text-2); line-height: 1.68; flex: 1; margin-bottom: 16px;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card__meta {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 12px; border-top: 1px solid var(--c-line); font-size: 12.5px; color: var(--c-text-3);
}
.news-card__more { font-weight: 600; }

/* ============================================================
   底部 CTA
   ============================================================ */
.cta { background: linear-gradient(120deg, var(--c-primary) 0%, var(--c-accent-dark) 100%); padding: 56px 0; }
.cta__inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta__title { font-size: clamp(21px, 2.4vw, 28px); color: #fff; margin-bottom: 8px; }
.cta__desc { color: rgba(255,255,255,.85); margin: 0; font-size: 15px; }
.cta__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cta__actions .btn--primary { background: #fff; color: var(--c-primary); border-color: #fff; }
.cta__actions .btn--primary:hover { background: var(--c-bg-dark); color: #fff; border-color: var(--c-bg-dark); }

/* ============================================================
   页脚
   ============================================================ */
.footer { background: #0a1c2e; color: rgba(255,255,255,.62); padding: 60px 0 0; font-size: 13.5px; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 42px; padding-bottom: 46px; }
.footer__logo { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 14px; letter-spacing: .5px; }
.footer__desc { line-height: 1.8; margin-bottom: 20px; }
.footer__contact li { display: flex; gap: 10px; margin-bottom: 9px; align-items: baseline; }
.footer__contact span:first-child { color: rgba(255,255,255,.4); min-width: 62px; flex-shrink: 0; }
.footer__contact strong { color: var(--c-accent); font-size: 16px; letter-spacing: .5px; }
.footer__title { font-size: 15px; color: #fff; margin-bottom: 18px; font-weight: 700; }
.footer__links li { margin-bottom: 10px; }
.footer__links a { color: rgba(255,255,255,.62); }
.footer__links a:hover { color: var(--c-accent); }
.footer__qr { display: flex; flex-direction: column; align-items: flex-start; gap: 9px; }
.footer__qr-box { background: #fff; padding: 7px; border-radius: var(--radius); line-height: 0; }
.footer__qr span { font-size: 12.5px; }

.footer__bottom {
  display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0 26px; font-size: 13px;
}
.footer__copy a { color: rgba(255,255,255,.55); margin-left: 10px; }
.footer__copy a:hover { color: var(--c-accent); }
.footer__meta { display: flex; gap: 18px; margin: 0; }
.footer__meta a { color: rgba(255,255,255,.55); }
.footer__meta a:hover { color: var(--c-accent); }

/* ============================================================
   面包屑
   ============================================================ */
.breadcrumb { background: var(--c-bg-alt); border-bottom: 1px solid var(--c-line); }
.breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 14px 0; font-size: 13.5px; }
.breadcrumb__item { color: var(--c-text-3); display: flex; align-items: center; }
.breadcrumb__item:not(:last-child)::after {
  content: "/"; margin-left: 8px; color: #c3ced9;
}
.breadcrumb__item a { color: var(--c-text-2); }
.breadcrumb__item a:hover { color: var(--c-primary); }
.breadcrumb__item[aria-current] { color: var(--c-text); font-weight: 500; }

/* ============================================================
   页面头
   ============================================================ */
.page-hero {
  background: linear-gradient(135deg, #10365c 0%, #1a5fb4 100%);
  padding: 54px 0;
  position: relative; overflow: hidden;
}
.page-hero::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(0,163,163,.3), transparent 68%);
}
.page-hero__title { font-size: clamp(24px, 3vw, 34px); color: #fff; margin-bottom: 10px; position: relative; }
.page-hero__desc { color: rgba(255,255,255,.8); max-width: 760px; margin: 0; font-size: 15px; position: relative; }
.page-hero__search { display: flex; gap: 10px; margin-top: 22px; max-width: 480px; position: relative; }
.page-hero__search input {
  flex: 1; padding: 11px 16px; border: 0; border-radius: var(--radius);
  font-size: 14px; outline: none;
}

/* ============================================================
   侧栏布局
   ============================================================ */
.layout-sidebar { display: grid; grid-template-columns: 250px 1fr; gap: 34px; align-items: start; }
.layout-sidebar--right { grid-template-columns: 1fr 300px; }

.sidebar { position: sticky; top: calc(var(--header-h) + 20px); }
.sidebar__title {
  font-size: 17px; padding: 14px 18px; margin: 0;
  background: var(--c-primary); color: #fff;
  border-radius: var(--radius) var(--radius) 0 0;
  letter-spacing: .5px;
}
.cat-tree { border: 1px solid var(--c-line); border-top: 0; border-radius: 0 0 var(--radius) var(--radius); overflow: hidden; background:#fff; }
.cat-tree__item { border-bottom: 1px solid var(--c-line); }
.cat-tree__item:last-child { border-bottom: 0; }
.cat-tree__link {
  display: block; padding: 12px 18px; font-size: 14.5px;
  color: var(--c-text); transition: all .2s;
}
.cat-tree__link:hover { background: var(--c-primary-light); color: var(--c-primary); padding-left: 22px; }
.cat-tree__link.is-active { color: var(--c-primary); font-weight: 700; background: var(--c-primary-light); box-shadow: inset 3px 0 0 var(--c-primary); }
.cat-tree__sub { background: #fafcfe; border-top: 1px dashed var(--c-line); }
.cat-tree__link--sub { padding-left: 32px; font-size: 13.5px; color: var(--c-text-2); }

.sidebar__cta {
  margin-top: 20px; padding: 22px 18px;
  background: var(--c-bg-dark); border-radius: var(--radius-lg); text-align: center;
}
.sidebar__cta-title { color: #fff; font-weight: 700; margin-bottom: 6px; font-size: 15px; }
.sidebar__cta-desc { color: rgba(255,255,255,.65); font-size: 13px; margin-bottom: 16px; }

/* 右侧栏盒子 */
.side-box {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 20px; margin-bottom: 20px;
}
.side-box__title {
  font-size: 15.5px; margin-bottom: 14px; padding-bottom: 12px;
  border-bottom: 1px solid var(--c-line); color: var(--c-text);
  position: relative;
}
.side-box__title::after {
  content: ""; position: absolute; left: 0; bottom: -1px; width: 42px; height: 2px; background: var(--c-primary);
}
.side-box--contact { background: linear-gradient(140deg, #14508f, #0e2740); border-color: transparent; }
.side-box--contact .side-box__title { color: #fff; border-color: rgba(255,255,255,.16); }
.side-box--contact .side-box__title::after { background: var(--c-accent); }
.side-box--contact p { color: rgba(255,255,255,.72); font-size: 13.5px; margin-bottom: 16px; }
.side-box__phone { text-align: center; color: var(--c-accent) !important; font-size: 18px !important; font-weight: 700; margin: 14px 0 0 !important; letter-spacing: .5px; }

.hot-list li { display: flex; gap: 10px; align-items: baseline; padding: 9px 0; border-bottom: 1px dashed var(--c-line); font-size: 13.5px; }
.hot-list li:last-child { border-bottom: 0; }
.hot-list__no {
  flex-shrink: 0; width: 20px; height: 20px; border-radius: 4px;
  background: var(--c-bg-alt); color: var(--c-text-3);
  font-size: 11.5px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.hot-list__no.is-top { background: var(--c-primary); color: #fff; }
.hot-list a { color: var(--c-text-2); }
.hot-list a:hover { color: var(--c-primary); }

.side-links li { padding: 8px 0; font-size: 13.5px; border-bottom: 1px dashed var(--c-line); }
.side-links li:last-child { border-bottom: 0; }

.side-search { display: flex; margin-bottom: 20px; }
.side-search input {
  flex: 1; min-width: 0; padding: 10px 14px; font-size: 13.5px;
  border: 1px solid var(--c-line); border-right: 0;
  border-radius: var(--radius) 0 0 var(--radius); outline: none;
}
.side-search input:focus { border-color: var(--c-primary); }
.side-search button {
  padding: 0 18px; border: 0; background: var(--c-primary); color: #fff;
  border-radius: 0 var(--radius) var(--radius) 0; font-size: 13.5px; font-weight: 600;
}
.side-search button:hover { background: var(--c-primary-dark); }

/* ============================================================
   工具栏 / 筛选
   ============================================================ */
.toolbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-bottom: 26px; padding: 16px 18px;
  background: var(--c-bg-alt); border-radius: var(--radius-lg);
}
.toolbar input {
  flex: 1; min-width: 180px; padding: 10px 15px; font-size: 14px;
  border: 1px solid var(--c-line); border-radius: var(--radius); outline: none; background: #fff;
}
.toolbar input:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(26,95,180,.1); }
.toolbar__clear { font-size: 13px; color: var(--c-text-3); }
.toolbar__count { font-size: 13.5px; color: var(--c-text-3); margin-left: auto; }
.toolbar__count strong { color: var(--c-primary); font-size: 15px; }

.filter-tabs { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 28px; }
.filter-tabs__item {
  padding: 8px 18px; font-size: 13.5px; border-radius: 22px;
  background: var(--c-bg-alt); color: var(--c-text-2);
  border: 1px solid var(--c-line); transition: all .2s;
}
.filter-tabs__item:hover { border-color: var(--c-primary); color: var(--c-primary); }
.filter-tabs__item.is-active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); font-weight: 600; }

.search-hint { font-size: 14px; color: var(--c-text-2); margin-bottom: 20px; }
.search-hint strong { color: var(--c-primary); }

/* ============================================================
   文章列表
   ============================================================ */
.article-list { display: flex; flex-direction: column; gap: 0; }
.a-item {
  display: flex; gap: 22px; padding: 24px 0;
  border-bottom: 1px solid var(--c-line);
}
.a-item:first-child { padding-top: 0; }
.a-item__media { flex-shrink: 0; width: 200px; aspect-ratio: 3/2; border-radius: var(--radius); overflow: hidden; background: var(--c-bg-alt); }
.a-item__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s var(--ease); }
.a-item:hover .a-item__media img { transform: scale(1.05); }
.a-item__ph {
  display: flex; align-items: center; justify-content: center; height: 100%;
  background: linear-gradient(135deg, #e8f0fb, #d9ecec);
  color: var(--c-primary); font-weight: 800; letter-spacing: 2px; font-size: 13px;
}
.a-item__body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.a-item__title { font-size: 17px; line-height: 1.5; margin-bottom: 9px; }
.a-item__title a { color: var(--c-text); }
.a-item__title a:hover { color: var(--c-primary); }
.a-item__top {
  display: inline-block; font-size: 11px; font-weight: 700; color: #fff;
  background: var(--c-danger); padding: 1px 7px; border-radius: 3px;
  margin-right: 8px; vertical-align: 2px;
}
.a-item__summary {
  font-size: 13.5px; color: var(--c-text-2); line-height: 1.7; flex: 1; margin-bottom: 12px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.a-item__meta { display: flex; align-items: center; gap: 16px; font-size: 12.5px; color: var(--c-text-3); }
.a-item__cat { color: var(--c-accent); font-weight: 600; }

/* ============================================================
   文章正文
   ============================================================ */
.article-detail__head { padding-bottom: 22px; border-bottom: 1px solid var(--c-line); margin-bottom: 26px; }
.article-detail__cat {
  display: inline-block; font-size: 12.5px; font-weight: 700; color: var(--c-accent);
  background: rgba(0,163,163,.1); padding: 4px 12px; border-radius: 4px; margin-bottom: 14px;
}
.article-detail__title { font-size: clamp(21px, 2.6vw, 29px); line-height: 1.45; margin-bottom: 14px; }
.article-detail__meta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; color: var(--c-text-3); }
.article-detail__client { font-size: 15px; color: var(--c-text-2); margin: 6px 0 0; }
.article-detail__lead {
  font-size: 15.5px; line-height: 1.85; color: var(--c-text-2);
  background: var(--c-bg-alt); border-left: 3px solid var(--c-primary);
  padding: 18px 22px; border-radius: 0 var(--radius) var(--radius) 0; margin-bottom: 26px;
}
.article-detail__figure { margin: 0 0 28px; }
.article-detail__figure img { width: 100%; border-radius: var(--radius-lg); }
.article-detail__tags { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; margin-top: 32px; padding-top: 22px; border-top: 1px solid var(--c-line); font-size: 13.5px; color: var(--c-text-3); }
.tag { font-size: 13px; color: var(--c-primary); background: var(--c-primary-light); padding: 3px 12px; border-radius: 20px; }

/* 富文本排版 */
.rich-text { font-size: 15.5px; line-height: 1.95; color: var(--c-text-2); }
.rich-text h2 { font-size: 20px; color: var(--c-text); margin: 34px 0 14px; padding-left: 14px; border-left: 4px solid var(--c-primary); }
.rich-text h3 { font-size: 17px; color: var(--c-text); margin: 26px 0 12px; }
.rich-text h2:first-child, .rich-text h3:first-child { margin-top: 0; }
.rich-text p { margin-bottom: 16px; }
.rich-text ul, .rich-text ol { margin: 0 0 18px; padding-left: 4px; }
.rich-text li { position: relative; padding-left: 22px; margin-bottom: 10px; }
.rich-text ul li::before {
  content: ""; position: absolute; left: 2px; top: .72em;
  width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent);
}
.rich-text ol { counter-reset: n; }
.rich-text ol li { counter-increment: n; }
.rich-text ol li::before {
  content: counter(n); position: absolute; left: 0; top: .1em;
  width: 17px; height: 17px; border-radius: 50%;
  background: var(--c-primary); color: #fff; font-size: 11px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.rich-text img { border-radius: var(--radius); margin: 8px 0 20px; }
.rich-text strong { color: var(--c-text); font-weight: 700; }
.rich-text table { margin: 0 0 20px; font-size: 14px; }
.rich-text th, .rich-text td { border: 1px solid var(--c-line); padding: 10px 14px; text-align: left; }
.rich-text th { background: var(--c-bg-alt); font-weight: 700; color: var(--c-text); }

/* 上下篇 */
.prevnext {
  display: flex; gap: 20px; justify-content: space-between;
  margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--c-line);
}
.prevnext__item { display: flex; flex-direction: column; gap: 5px; min-width: 0; max-width: 46%; font-size: 14px; }
.prevnext__item--right { text-align: right; margin-left: auto; }
.prevnext__label { font-size: 12.5px; color: var(--c-text-3); }
.prevnext__none { font-size: 13.5px; color: var(--c-text-3); }
.prevnext a { font-weight: 500; }

/* 相关阅读 */
.related-block { margin-top: 34px; padding: 24px 26px; background: var(--c-bg-alt); border-radius: var(--radius-lg); }
.related-block__title { font-size: 17px; margin-bottom: 14px; }
.related-list li {
  display: flex; justify-content: space-between; gap: 16px; align-items: baseline;
  padding: 10px 0; border-bottom: 1px dashed var(--c-line); font-size: 14px;
}
.related-list li:last-child { border-bottom: 0; }
.related-list time, .related-list li > span { font-size: 12.5px; color: var(--c-text-3); white-space: nowrap; }

/* ============================================================
   产品详情
   ============================================================ */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: start; }
.detail-media__main {
  aspect-ratio: 4/3; background: var(--c-bg-alt);
  border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.detail-media__main img { width: 100%; height: 100%; object-fit: contain; }
.detail-media__ph { display: flex; flex-direction: column; align-items: center; gap: 12px; color: #b9c8d6; }
.detail-media__ph em { font-style: normal; font-size: 13.5px; }
.detail-thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.detail-thumbs button {
  width: 82px; height: 62px; padding: 0; border: 2px solid var(--c-line);
  border-radius: 6px; overflow: hidden; background: var(--c-bg-alt);
}
.detail-thumbs button.is-active { border-color: var(--c-primary); }
.detail-thumbs img { width: 100%; height: 100%; object-fit: cover; }

.detail-title { font-size: clamp(21px, 2.5vw, 28px); line-height: 1.42; margin-bottom: 14px; }
.detail-model { font-size: 14.5px; color: var(--c-text-2); margin-bottom: 6px; }
.detail-model strong { color: var(--c-primary); font-size: 16px; letter-spacing: .5px; }
.detail-cat { font-size: 13.5px; color: var(--c-text-3); margin-bottom: 18px; }
.detail-summary {
  font-size: 15px; line-height: 1.85; color: var(--c-text-2);
  padding: 16px 20px; background: var(--c-bg-alt); border-radius: var(--radius);
  margin-bottom: 22px;
}
.detail-price { display: flex; align-items: baseline; gap: 12px; padding-bottom: 20px; border-bottom: 1px solid var(--c-line); margin-bottom: 20px; flex-wrap: wrap; }
.detail-price__now { font-size: 30px; font-weight: 800; color: var(--c-danger); letter-spacing: -.5px; }
.detail-price__ask { font-size: 24px; font-weight: 800; color: var(--c-primary); }
.detail-price__note { font-size: 12.5px; color: var(--c-text-3); }

.detail-points { margin-bottom: 26px; }
.detail-points li {
  position: relative; padding-left: 26px; margin-bottom: 9px;
  font-size: 14px; color: var(--c-text-2);
}
.detail-points li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--c-accent); font-weight: 800;
}

.detail-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }

.detail-quick {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--c-line); border-radius: var(--radius); overflow: hidden; margin: 0;
}
.detail-quick > div { background: var(--c-bg-alt); padding: 12px 16px; display: flex; gap: 10px; font-size: 13.5px; }
.detail-quick dt { color: var(--c-text-3); flex-shrink: 0; }
.detail-quick dd { margin: 0; color: var(--c-text); font-weight: 500; }

.detail-body-wrap { display: grid; grid-template-columns: 1fr 340px; gap: 40px; align-items: start; }
/* grid 子项默认 min-width:auto —— 内部若有长表格/富文本会撑破轨道，
   导致横向溢出。显式归零，让子项服从轨道宽度。 */
.detail-body-wrap > *,
.detail-grid > *,
.layout-sidebar > *,
.layout-sidebar--right > *,
.contact-grid > *,
.intro > *,
.about-intro > * { min-width: 0; }
.detail-body { background: #fff; border-radius: var(--radius-lg); }

/* 选项卡 */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--c-line); margin-bottom: 28px; }
.tabs__btn {
  padding: 13px 24px; background: none; border: 0; border-bottom: 2.5px solid transparent;
  font-size: 15px; font-weight: 600; color: var(--c-text-3); transition: all .2s;
}
.tabs__btn:hover { color: var(--c-primary); }
.tabs__btn.is-active { color: var(--c-primary); border-bottom-color: var(--c-primary); }
.tabs__panel[hidden] { display: none; }

.spec-table { font-size: 14px; border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; }
.spec-table th, .spec-table td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--c-line); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table th { background: var(--c-bg-alt); font-weight: 600; color: var(--c-text); width: 180px; }
.spec-table td { color: var(--c-text-2); }
.spec-note { font-size: 12.5px; color: var(--c-text-3); margin-top: 14px; }

.aside-card {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius-lg); padding: 24px; position: sticky; top: calc(var(--header-h) + 20px);
}
.aside-card--contact { background: var(--c-bg-alt); }
.aside-card__title { font-size: 17px; margin-bottom: 8px; }
.aside-card__desc { font-size: 13.5px; color: var(--c-text-2); margin-bottom: 18px; }

/* ============================================================
   表单
   ============================================================ */
.form-row { display: flex; gap: 14px; margin-bottom: 0; }
.form-row--2 > .form-field { flex: 1; min-width: 0; }
.form-field { margin-bottom: 15px; }
.form-field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; color: var(--c-text); }
.form-field .req { color: var(--c-danger); }
.form-field input, .form-field textarea, .form-field select {
  width: 100%; padding: 11px 14px; font-size: 14px; font-family: inherit;
  border: 1px solid var(--c-line); border-radius: var(--radius);
  background: #fff; color: var(--c-text); outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(26,95,180,.1);
}
.form-field input[aria-invalid="true"], .form-field textarea[aria-invalid="true"] { border-color: var(--c-danger); }
.form-field textarea { resize: vertical; min-height: 110px; }
.form-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 6px; }
.form-note { font-size: 12.5px; color: var(--c-text-3); margin: 0; }
.form-feedback { font-size: 13.5px; margin: 12px 0 0; min-height: 20px; }
.form-feedback.is-ok { color: #1a8f5f; }
.form-feedback.is-err { color: var(--c-danger); }

/* 蜜罐字段：视觉隐藏但不对屏幕阅读器隐藏 */
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

.alert { padding: 12px 18px; border-radius: var(--radius); font-size: 14px; margin-bottom: 18px; }
.alert--success { background: #e8f7f0; color: #1a7a52; border-left: 3px solid #1a8f5f; }

/* ============================================================
   搜索页
   ============================================================ */
.search-section { margin-bottom: 48px; }
.search-section__title { font-size: 19px; padding-bottom: 12px; border-bottom: 2px solid var(--c-line); margin-bottom: 24px; }
.search-section__title span { font-size: 14px; color: var(--c-text-3); font-weight: 400; }
.search-empty { font-size: 14px; color: var(--c-text-3); padding: 20px 0; }

/* ============================================================
   解决方案列表
   ============================================================ */
.sol-list { display: flex; flex-direction: column; gap: 0; }
.sol-row {
  display: flex; align-items: center; gap: 28px;
  padding: 30px 0; border-bottom: 1px solid var(--c-line);
  transition: padding .25s var(--ease);
}
.sol-row:hover { padding-left: 12px; }
.sol-row__no {
  font-size: 30px; font-weight: 800; color: var(--c-primary);
  opacity: .22; flex-shrink: 0; letter-spacing: 1px;
}
.sol-row__media {
  flex-shrink: 0; width: 168px; aspect-ratio: 8 / 5;
  border-radius: var(--radius); overflow: hidden;
  background: var(--c-bg-alt); display: block;
}
.sol-row__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.sol-row:hover .sol-row__media img { transform: scale(1.05); }
.sol-row__body { flex: 1; min-width: 0; }
.sol-row__title { font-size: 19px; margin-bottom: 8px; }
.sol-row__title a { color: var(--c-text); }
.sol-row__title a:hover { color: var(--c-primary); }
.sol-row__desc { font-size: 14px; color: var(--c-text-2); margin: 0; line-height: 1.75; }
.sol-row__action { flex-shrink: 0; }

/* CTA 块 */
.cta-block {
  margin-top: 50px; padding: 44px 40px; text-align: center;
  background: var(--c-bg-alt); border-radius: var(--radius-lg);
  border: 1px dashed var(--c-line);
}
.cta-block h2 { font-size: 21px; margin-bottom: 10px; }
.cta-block p { color: var(--c-text-2); margin-bottom: 22px; }

/* ============================================================
   关于我们
   ============================================================ */
.about-intro { display: grid; grid-template-columns: 1.4fr 1fr; gap: 50px; align-items: center; margin-bottom: 30px; }
/*
 * 公司环境图为竖向（约 0.69 比例）。
 * 用 aspect-ratio + object-fit: cover 裁剪成横向画框，
 * 否则图片高度会随列宽线性增长，把整行撑得很高。
 */
.about-intro__visual {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: 0 18px 44px rgba(16, 40, 70, .14);
}
.about-intro__visual img {
  width: 100%; height: 100%; display: block; object-fit: cover;
}
.about-intro__stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--c-line); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 70px; }

/* 资质证书实拍 */
/*
 * 资质证书区
 * 证书图片为竖向（约 2:3），若栅格列宽过大，卡片会变得极高。
 * 因此：
 *   1) 用 auto-fit + minmax 限制单卡最大宽度（180–240px 区间）
 *   2) 外层 flex 居中，证书较少时也不会被拉散
 *   3) 用 aspect-ratio 锁定画框比例，图片 object-fit: contain 保证完整可见
 */
.cert-gallery { margin-bottom: 70px; }
.cert-grid {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 26px 20px;
}
.cert-item {
  margin: 0; flex: 0 1 200px; max-width: 220px;
}
.cert-item__frame {
  aspect-ratio: 2 / 3;
  border: 1px solid var(--c-line); border-radius: var(--radius);
  background: #fff; overflow: hidden;
  box-shadow: 0 2px 10px rgba(16, 40, 70, .06);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.cert-item img {
  width: 100%; height: 100%; display: block;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.cert-item:hover .cert-item__frame {
  transform: translateY(-5px);
  box-shadow: 0 16px 34px rgba(16, 40, 70, .16);
}
.cert-item:hover img { transform: scale(1.03); }
.cert-item figcaption {
  margin-top: 12px; font-size: 13px; color: var(--c-text-3); text-align: center;
}

.honors { margin-bottom: 70px; }
.honor-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.honor-item {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 20px; background: var(--c-bg-alt);
  border-radius: var(--radius); font-size: 14.5px;
}
.honor-item__icon {
  width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0;
  background: var(--c-accent); color: #fff; font-size: 13px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.honor-item__name { flex: 1; color: var(--c-text); }
.honor-item__year { font-size: 12.5px; color: var(--c-text-3); }

/* ---------- 关于页（对标参考站 yp-yq.com/about）----------
 * 参考站实测数据（1440 视口）：
 *   章节小标 <span>「我们是谁」  14px / #0D6E38 / 居中，章节标题上一行
 *   章节大标 <b>               32px / 700 / #000 / 居中，行高 44.8px
 *   正文 <span>                16px / 400 / #666 / line-height 25.5px / 无首行缩进 / 左对齐
 *   标语横幅：<b>优谱通用 25px/700 白 + <b>标语 48px/700 白，居中，深色底
 *   软著卡片标题 .imgtitle      16px / #0D6E38 / 居中
 */

/* 通用：居中的章节头，与参考站一致 */
.about-head { text-align: center; margin-bottom: 46px; }
.about-head .section__eyebrow {
  display: block; font-size: 14px; font-weight: 400; letter-spacing: 0;
  color: #0D6E38; text-transform: none; margin-bottom: 12px;
}
.about-head .section__title {
  font-size: 32px; font-weight: 700; color: #000;
  line-height: 1.4; letter-spacing: 0; margin-bottom: 0;
}
.about-head .section__desc {
  font-size: 16px; color: #666; line-height: 1.8; margin: 12px 0 0;
}

/* 1) 公司简介：居中标题 + 带细边框的白底正文块（参考站为通栏浅色卡片）*/
.about-intro-section { padding: 70px 0 64px; }
.about-prose {
  max-width: 1200px; margin: 0 auto;
  padding: 40px 48px;
  background: #fff;
  border: 1px solid #ededed;
}
.about-prose .rich-text p {
  font-size: 16px; line-height: 1.85; color: #666;
  margin: 0 0 16px; text-indent: 0; text-align: left;
}
.about-prose .rich-text p:last-child { margin-bottom: 0; }
/* 参考站简介正文里没有子标题，若后台填了 h2/h3 也压成正文观感 */
.about-prose .rich-text h2,
.about-prose .rich-text h3 {
  font-size: 16px; font-weight: 700; color: #333;
  margin: 20px 0 10px; line-height: 1.7;
}

/* 2) 标语横幅：纯深色平底（参考站无照片层），小品牌名 + 大标语 */
.about-banner {
  position: relative; overflow: hidden;
  display: flex; align-items: center;
  background: #2b2f33;            /* 参考站为近黑深灰平底 */
  min-height: 300px;
}
.about-banner__bg { display: none; }
.about-banner__mask { display: none; }
.about-banner__inner { position: relative; z-index: 2; text-align: center; padding: 74px 0; }
.about-banner__brand {
  display: block; font-size: 25px; font-weight: 700; letter-spacing: 1px;
  color: #fff; margin-bottom: 24px; line-height: 1.4;
}
.about-banner__slogan {
  font-size: clamp(26px, 3.4vw, 48px); font-weight: 700;
  color: #fff; letter-spacing: 2px; line-height: 1.4;
  margin: 0;
}

/* 3) 资质荣誉（软著证书）栅格 */
.about-honors { padding-top: 70px; padding-bottom: 70px; }
.honor-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 25px;
  margin-bottom: 44px;
}
.honor-card { margin: 0; }
.honor-card__frame {
  aspect-ratio: 3 / 4;
  background: #fff;
  border: 0;
  border-radius: 0;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .10);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.honor-card__frame img {
  width: 100%; height: 100%; display: block;
  object-fit: cover; object-position: top center;
  transition: transform .5s var(--ease);
}
.honor-card:hover .honor-card__frame {
  transform: translateY(-6px);
  box-shadow: 0 18px 38px rgba(0, 0, 0, .18);
}
.honor-card:hover .honor-card__frame img { transform: scale(1.03); }
/* 参考站 .imgtitle：16px 绿色居中 */
.honor-card__name {
  margin-top: 14px; font-size: 16px; line-height: 1.5;
  color: #0D6E38; text-align: center;
}
.honor-list--alt { margin-top: 30px; }

/* 4) 数据统计条：深色底 + 图标 + 数字 */
.about-stats { background: var(--c-bg-dark); padding: 60px 0; }
.about-stats__inner {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 24px; text-align: center;
}
.astat { display: flex; flex-direction: column; align-items: center; }
.astat__icon { display: block; margin-bottom: 14px; opacity: .92; }
.astat__icon img { width: 46px; height: 46px; object-fit: contain; }
.astat__num {
  display: inline-block; min-width: 3ch;
  font-size: clamp(30px, 3.6vw, 44px); font-weight: 800;
  color: #fff; line-height: 1.1; letter-spacing: -.5px;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}
.astat__label {
  margin-top: 8px; font-size: 13.5px; color: rgba(255, 255, 255, .68);
  letter-spacing: .6px;
}

.about-products { padding-top: 0; }

/* ============================================================
   联系我们
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 52px; align-items: start; }
.contact-list { margin-bottom: 26px; }
.contact-item {
  display: flex; gap: 16px; padding: 16px 0;
  border-bottom: 1px dashed var(--c-line); align-items: flex-start;
}
.contact-item__icon {
  width: 42px; height: 42px; border-radius: 10px; flex-shrink: 0;
  background: var(--c-primary-light); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.contact-item__label { display: block; font-size: 12.5px; color: var(--c-text-3); margin-bottom: 3px; }
.contact-item__value { font-size: 15px; color: var(--c-text); }
.contact-item__value--lg { font-size: 22px; font-weight: 800; color: var(--c-primary); letter-spacing: .5px; }
.contact-info__extra { margin-top: 24px; }

.contact-form-wrap { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg); padding: 32px; }
.contact-form__desc { font-size: 14px; color: var(--c-text-2); margin-bottom: 22px; }

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap;
  margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--c-line);
}
.pagination__link {
  min-width: 38px; height: 38px; padding: 0 13px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--c-line); border-radius: var(--radius);
  font-size: 14px; color: var(--c-text-2); background: #fff;
  transition: all .2s;
}
.pagination__link:hover { border-color: var(--c-primary); color: var(--c-primary); }
.pagination__link.is-current { background: var(--c-primary); border-color: var(--c-primary); color: #fff; font-weight: 700; }
.pagination__link.is-disabled { color: #c3ced9; background: var(--c-bg-alt); cursor: not-allowed; }
.pagination__link.is-disabled:hover { border-color: var(--c-line); color: #c3ced9; }
.pagination__ellipsis { color: var(--c-text-3); padding: 0 3px; }
.pagination__info { font-size: 13px; color: var(--c-text-3); margin-left: auto; }

/* ============================================================
   空状态 / 错误页
   ============================================================ */
.empty { text-align: center; padding: 70px 20px; }
.empty__title { font-size: 19px; font-weight: 700; color: var(--c-text); margin-bottom: 10px; }
.empty__desc { font-size: 14px; color: var(--c-text-3); margin-bottom: 24px; }

.error-page { padding: 90px 0 110px; text-align: center; }
.error-page__code {
  font-size: clamp(70px, 12vw, 120px); font-weight: 900; line-height: 1;
  color: var(--c-primary-light); margin: 0 0 10px; letter-spacing: -3px;
}
.error-page__title { font-size: 25px; margin-bottom: 12px; }
.error-page__desc { font-size: 15px; color: var(--c-text-2); margin-bottom: 30px; }
.error-page__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 34px; }
.error-page__links { font-size: 13.5px; color: var(--c-text-3); }
.error-page__links a { margin: 0 9px; }

/* ============================================================
   悬浮条 / 返回顶部
   ============================================================ */
.float-bar { display: none; }
.back-top {
  position: fixed; right: 22px; bottom: 30px; z-index: 90;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-primary); color: #fff; border: 0;
  font-size: 19px; line-height: 1; box-shadow: var(--shadow-lg);
  transition: all .25s var(--ease);
}
.back-top:hover { background: var(--c-primary-dark); transform: translateY(-3px); }

/* ============================================================
   搜索联想下拉
   ============================================================ */
.search-suggest {
  position: absolute; top: calc(100% + 8px); right: 0; left: 0;
  min-width: 300px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 6px; max-height: 380px; overflow-y: auto;
  display: none; z-index: 120;
}
.search-suggest.is-open { display: block; }
.search-suggest__group {
  font-size: 11.5px; font-weight: 700; color: var(--c-text-3);
  letter-spacing: 1px; padding: 8px 12px 4px; text-transform: uppercase;
}
.search-suggest a {
  display: block; padding: 9px 12px; border-radius: 6px;
  font-size: 13.5px; color: var(--c-text-2); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.search-suggest a:hover { background: var(--c-primary-light); color: var(--c-primary); }
.search-suggest a em { font-style: normal; font-size: 12px; color: var(--c-text-3); margin-left: 6px; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1280px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .megamenu { width: min(1120px, calc(100vw - 32px)); }
  .megamenu__inner { grid-template-columns: repeat(4, 1fr); }
  .honor-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1100px) {
  .megamenu { width: calc(100vw - 32px); }
  .megamenu__inner { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1000px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }

  /* 移动端抽屉菜单 */
  .nav.is-open {
    display: block; position: fixed; inset: var(--header-h) 0 0 0;
    background: #fff; overflow-y: auto; padding: 12px 0 40px;
    margin-left: 0; z-index: 99;
  }
  .nav.is-open .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav.is-open .nav__item { border-bottom: 1px solid var(--c-line); }
  .nav.is-open .nav__link { padding: 15px 20px; border-radius: 0; font-size: 16px; }
  .nav.is-open .nav__link.is-active::after { display: none; }
  .nav.is-open .nav__link.is-active { background: var(--c-primary-light); }
  .nav.is-open .nav__caret { margin-left: auto; }
  .nav.is-open .submenu,
  .nav.is-open .megamenu {
    position: static; opacity: 1; visibility: visible; transform: none;
    width: auto; max-width: none; max-height: none;
    display: block; /* 覆盖桌面端的 flex，抽屉里按文档流排布 */
    box-shadow: none; border: 0; border-radius: 0;
    padding: 0 20px 14px; background: var(--c-bg-alt);
  }
  .nav.is-open .megamenu__inner {
    grid-template-columns: 1fr;
    overflow: visible; max-height: none; flex: none;
  }
  .nav.is-open .megamenu__col { border-bottom: 1px dashed var(--c-line); padding: 10px 0; }
  .nav.is-open .megamenu__foot { display: none; }
  .nav.is-open .nav__item--has-sub:not(.is-expanded) .submenu,
  .nav.is-open .nav__item--has-sub:not(.is-expanded) .megamenu { display: none; }

  .header__search { display: none; }

  .intro, .about-intro { grid-template-columns: 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .detail-grid { grid-template-columns: 1fr; gap: 32px; }
  .detail-body-wrap { grid-template-columns: 1fr; gap: 30px; }
  /* grid 子项默认 min-width:auto，会被内部长内容（表格/富文本）撑破容器
     —— 显式设 0，让它们老老实实待在轨道宽度内 */
  .detail-body-wrap > *,
  .detail-grid > *,
  .layout-sidebar > *,
  .layout-sidebar--right > * { min-width: 0; }
  .detail-body { overflow-x: clip; }
  .aside-card { position: static; }

  .layout-sidebar, .layout-sidebar--right { grid-template-columns: 1fr; }
  .sidebar { position: static; }

  .series-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .series-card { padding: 36px 30px; gap: 18px; min-height: 0; }
  .series-card__icon,
  .series-card__icon img { flex-basis: 64px; width: 64px; height: 64px; }
  .series-card__title { font-size: 20px; }
  .sol-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .about-intro__stats { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, 1fr); gap: 34px; }
  .honor-list { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  :root { --header-h: 62px; }
  body { font-size: 14.5px; }
  .container { padding: 0 16px; }
  .section { padding: 52px 0; }

  .topbar__item--hide-sm { display: none; }
  .topbar__inner { justify-content: center; }

  .logo__mark svg { width: 34px; height: 34px; }
  .logo__name { font-size: 17px; }
  .logo__sub { display: none; }
  .logo__img { height: 36px; max-width: 150px; }

  /* 移动端触控友好：Logo 与面包屑保证 ≥44px 可点高度
     （Apple HIG 44px / Material 48px，也利于移动端体验评分） */
  .logo { min-height: 44px; }
  .logo__img { min-height: 36px; }
  .breadcrumb__list { gap: 4px; padding: 10px 0; }
  .breadcrumb__item a {
    display: inline-flex; align-items: center; min-height: 44px;
    padding: 0 2px;
  }

  /* 轮播：容器固定 1.92:1；移动端放宽高度上限（竖屏下 78vh 会显得太扁） */
  .hero__slider { max-height: min(72vh, 520px); }

  /* 箭头：窄屏贴边收紧到 4px，热区放大到 44px（无障碍触控下限） */
  .hero__nav { width: 44px; height: 44px; }
  .hero__nav--prev { left: 4px; }
  .hero__nav--next { right: 4px; }
  .hero__nav svg { width: 30px; height: 30px; }

  .section__head--between { flex-direction: column; align-items: flex-start; }

  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .series-grid, .sol-grid, .news-grid, .case-grid { grid-template-columns: 1fr; }
  /* 产品系列卡片：窄屏图标缩到 56，文字占满 */
  .series-card { padding: 26px 20px; gap: 16px; }
  .series-card__icon,
  .series-card__icon img { flex-basis: 56px; width: 56px; height: 56px; margin-top: 4px; }
  .series-card__title { font-size: 19px; margin-top: 6px; }
  .series-card__desc { max-width: none; }
  .cert-item { flex: 0 1 46%; max-width: none; }

  .p-card__body { padding: 13px 14px 15px; }
  .p-card__title { font-size: 14.5px; }

  .a-item { flex-direction: column; gap: 14px; }
  .a-item__media { width: 100%; }

  .form-row { flex-direction: column; gap: 0; }
  .prevnext { flex-direction: column; gap: 16px; }
  .prevnext__item { max-width: none; }
  .prevnext__item--right { text-align: left; margin-left: 0; }

  /* 关于页（对标参考站） */
  .about-head { margin-bottom: 30px; }
  .about-head .section__title { font-size: 24px; }
  .about-head .section__desc { font-size: 14.5px; }
  .about-prose { padding: 24px 18px; }
  .about-prose .rich-text p { font-size: 14.5px; line-height: 1.9; }
  .about-banner { min-height: 200px; }
  .about-banner__inner { padding: 46px 0; }
  .about-banner__brand { font-size: 18px; margin-bottom: 14px; }
  .honor-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .honor-card__name { font-size: 14px; }
  .about-stats { padding: 42px 0; }
  .about-stats__inner { grid-template-columns: repeat(2, 1fr); gap: 30px 16px; }
  .astat__icon img { width: 38px; height: 38px; }

  .sol-row { flex-direction: column; align-items: flex-start; gap: 14px; padding: 26px 0; }
  .sol-row__media { width: 100%; aspect-ratio: 16 / 9; }
  .sol-row__no { font-size: 24px; }
  .sol-row__action { width: 100%; }
  .sol-row__action .btn { width: 100%; }

  .detail-quick { grid-template-columns: 1fr; }
  .tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .tabs__btn { padding: 12px 18px; white-space: nowrap; }

  /* ── 表格：窄屏改为「标签在上、值在下」的堆叠布局 ──
     避免 180px 固定 th 列宽在 320–390px 手机上挤压内容 */
  .spec-table { font-size: 14px; }
  .spec-table th, .spec-table td { padding: 11px 14px; }
  .spec-table th { width: auto; display: block; border-bottom: 0; padding-bottom: 4px; }
  .spec-table td { display: block; padding-top: 4px; }
  .spec-table tr { display: block; border-bottom: 1px solid var(--c-line); }
  .spec-table tr:last-child { border-bottom: 0; }

  /* 富文本表格：允许横向滚动，不撑破容器 */
  .rich-text table {
    display: block; width: 100%; overflow-x: auto;
    -webkit-overflow-scrolling: touch; white-space: nowrap;
  }

  /* 正文行高与字号：移动端可读性 */
  .rich-text { font-size: 15px; line-height: 1.9; }
  .rich-text h2 { font-size: 19px; }
  .rich-text h3 { font-size: 17px; }
  .rich-text img { max-width: 100%; height: auto; }

  /* 卡片标题链接：加大行高让触控更准（不改变视觉密度） */
  .p-card__title { line-height: 1.6; }
  .p-card__title a { display: inline-block; padding: 2px 0; }

  /* 长英文/型号串换行，防溢出 */
  .p-card__title, .a-item__title, .detail-title { overflow-wrap: anywhere; }

  /* 按钮触控友好：正文区按钮保证 ≥44px 高 */
  .btn, .btn--sm { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }
  .btn--sm { min-height: 40px; font-size: 14px; }

  /* 表单控件移动端友好：≥44px 且字号 ≥16px 防 iOS 自动缩放 */
  input[type=text], input[type=search], input[type=tel], input[type=email],
  input[type=password], select, textarea { min-height: 44px; font-size: 16px; }
  textarea { min-height: 120px; }

  .footer__grid { grid-template-columns: 1fr; gap: 30px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 10px; }

  .contact-form-wrap { padding: 22px 18px; }
  .cta__inner { flex-direction: column; align-items: flex-start; }
  .cta__actions { width: 100%; }
  .cta__actions .btn { flex: 1 1 auto; }

  /* 移动端底部悬浮咨询 */
  .float-bar {
    display: grid; grid-template-columns: repeat(2, 1fr);
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 95;
    background: #fff; border-top: 1px solid var(--c-line);
    box-shadow: 0 -3px 14px rgba(16,40,70,.09);
    padding-bottom: env(safe-area-inset-bottom, 0);
  }
  .float-bar__item {
    display: flex; align-items: center; justify-content: center; gap: 7px;
    padding: 14px 8px; font-size: 14px; font-weight: 600; color: var(--c-text);
  }
  .float-bar__item--primary { background: var(--c-primary); color: #fff; }
  .float-bar__icon { font-size: 16px; }

  .back-top { right: 14px; bottom: 76px; }
  body { padding-bottom: 58px; }
}

@media (max-width: 420px) {
  .product-grid { grid-template-columns: 1fr; }
  .logo__name { font-size: 16px; }
}

/* 打印样式：便于用户打印产品页 / 文章 */
@media print {
  .topbar, .header, .footer, .float-bar, .back-top, .breadcrumb,
  .sidebar, .aside-card, .prevnext, .cta, .form-actions { display: none !important; }
  body { font-size: 12pt; color: #000; }
  a { color: #000; text-decoration: underline; }
  .section { padding: 12pt 0; }
}