@charset "utf-8";
/* ============================================================
   宝玛仕 BMS 中文站 — bmslighting.com
   与英文站（www.gdbmslighting.com）共用品牌色，但独立一套样式。
   设计取向：中文企业官网（信息密度低、行高大、留白足、材料感强），
   而非英文站的极简外贸风格。
   ============================================================ */

:root {
  --color-primary: #c8102e;
  --color-primary-dark: #a00d24;
  --color-primary-light: #fbe6e9;
  --color-ink: #1a1a1a;
  --color-gray-900: #222222;
  --color-gray-700: #4a4a4a;
  --color-gray-500: #767676;
  --color-gray-300: #cfcfcf;
  --color-gray-200: #e8e8e8;
  --color-gray-100: #f5f5f6;
  --color-white: #ffffff;
  --color-dark: #141414;

  /* 中文优先字体栈：不加载 webfont，靠系统字体保证首屏速度 */
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-num: "Helvetica Neue", Arial, var(--font-cn);

  --container: 1200px;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.14);
  --transition: 0.25s ease;

  --font-kai: "KaiTi", "STKaiti", serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-cn);
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-gray-700);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
li { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }

h1, h2, h3, h4 {
  color: var(--color-ink);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

/* ---------- 布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 76px 0; }
.section-alt { background: var(--color-gray-100); }
.section-dark { background: var(--color-dark); color: rgba(255, 255, 255, 0.78); }
.section-dark h2, .section-dark h3 { color: #fff; }

.sec-head { margin-bottom: 44px; max-width: 720px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.sec-label {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.sec-title {
  font-size: 30px;
  margin-bottom: 14px;
}

.sec-desc {
  font-size: 15px;
  color: var(--color-gray-500);
  line-height: 1.9;
}

.section-dark .sec-desc { color: rgba(255, 255, 255, 0.6); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-1px); }

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.14); border-color: #fff; }

.btn-outline {
  border-color: var(--color-gray-300);
  color: var(--color-gray-900);
  background: #fff;
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-sm { padding: 9px 20px; font-size: 14px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
  line-height: 1;
}

.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
}

.topbar-left { display: flex; align-items: center; gap: 22px; }
.topbar a { color: rgba(255, 255, 255, 0.82); transition: color var(--transition); }
.topbar a:hover { color: #fff; }
.topbar .hot { color: var(--color-primary); font-weight: 700; }
.topbar-right { display: flex; align-items: center; gap: 18px; }

/* ---------- 导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 44px; width: auto; }
.brand-text strong {
  display: block;
  font-size: 17px;
  color: var(--color-ink);
  letter-spacing: 0.06em;
  line-height: 1.3;
}
.brand-text span {
  display: block;
  font-size: 11px;
  color: var(--color-gray-500);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 34px; }

.nav > li > a {
  position: relative;
  display: block;
  padding: 6px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-900);
  transition: color var(--transition);
}

.nav > li > a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -22px;
  height: 3px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}

.nav > li > a:hover,
.nav > li.is-active > a { color: var(--color-primary); }
.nav > li > a:hover::after,
.nav > li.is-active > a::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--color-ink);
}

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background: var(--color-dark);
  overflow: hidden;
  isolation: isolate;
}

.hero-media { position: absolute; inset: 0; z-index: -1; }

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(96deg, rgba(10, 10, 12, 0.9) 0%, rgba(10, 10, 12, 0.66) 44%, rgba(10, 10, 12, 0.18) 100%);
}

.hero-inner { padding: 84px 0 76px; max-width: 660px; color: #fff; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding: 7px 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.06);
}

.hero-eyebrow i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  display: inline-block;
}

.hero h1 {
  color: #fff;
  font-size: 44px;
  line-height: 1.28;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.hero h1 em {
  font-style: normal;
  color: #fff;
  padding: 0 2px;
  background: linear-gradient(transparent 64%, rgba(200, 16, 46, 0.62) 64%);
}

.hero p {
  font-size: 16px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.76);
  margin-bottom: 30px;
  max-width: 560px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.hero-badges span {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.82);
}

/* ---------- 信任数字 ---------- */
.trust {
  background: var(--color-ink);
  color: #fff;
}

.trust .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  max-width: none;
  padding: 0;
}

.trust-item {
  padding: 34px 20px;
  text-align: center;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.trust-item:first-child { border-left: 0; }

.trust-item strong {
  display: block;
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  letter-spacing: -0.01em;
}

.trust-item strong small {
  font-size: 15px;
  font-weight: 600;
  margin-left: 3px;
  color: rgba(255, 255, 255, 0.75);
}

.trust-item span {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.04em;
}

/* ---------- 产品分类 ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.cat {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px 22px 22px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
  transition: all var(--transition);
  overflow: hidden;
}

.cat:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.cat-no {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-gray-300);
  letter-spacing: 0.1em;
}

.cat h3 {
  margin: 8px 0 6px;
  font-size: 18px;
}

.cat p {
  flex: 1;                 /* 描述吃掉剩余高度 → 卡片等高时图片自动对齐底线 */
  font-size: 13.5px;
  color: var(--color-gray-500);
  line-height: 1.7;
}

.cat-img {
  margin-top: 14px;
  flex: 0 0 132px;         /* 不加 flex-basis 会被 flex 压成 0，图片溢出被裁 */
  height: 132px;
  display: grid;
  place-items: center;
}

.cat-img img {
  /* height:auto 必须有：img 标签带 height="800" 属性，不覆盖就会按 800px 渲染，
     撑破 118px 的图区并被 overflow 裁掉（踩过） */
  height: auto;
  width: auto;
  max-height: 132px;
  max-width: 100%;
  object-fit: contain;
  filter: drop-shadow(0 10px 14px rgba(17, 17, 17, 0.12));
  transition: transform 0.4s ease;
}

.cat:hover .cat-img img { transform: translateY(-4px) scale(1.04); }

.cat-more {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
}

/* ---------- 解决方案 ---------- */
.sol-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sol {
  position: relative;
  display: block;
  height: 240px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-dark);
}

.sol img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.66;
  transition: transform 0.6s ease, opacity var(--transition);
}

.sol:hover img { transform: scale(1.06); opacity: 0.8; }

.sol-body {
  position: absolute;
  inset: auto 0 0 0;
  padding: 24px 22px 20px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.86) 100%);
  color: #fff;
}

.sol-body h3 { color: #fff; font-size: 19px; margin-bottom: 6px; }
.sol-body p { font-size: 13px; color: rgba(255, 255, 255, 0.68); line-height: 1.7; }

.sol-tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--color-primary);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

/* ---------- 案例 ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  transition: all var(--transition);
}

.case:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

.case-img { aspect-ratio: 16 / 9; overflow: hidden; background: var(--color-gray-100); }
.case-img img { width: 100%; height: 100%; object-fit: cover; }

.case-body { padding: 20px 22px 24px; }
.case-body h3 { font-size: 17px; margin-bottom: 8px; }
.case-body p { font-size: 13.5px; color: var(--color-gray-500); line-height: 1.75; }

.case-meta {
  display: flex;
  gap: 14px;
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--color-gray-500);
}

.case-meta span { display: inline-flex; align-items: center; gap: 5px; }

/* ---------- 工厂 / 图文左右 ---------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.split-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 5 / 4;
}

.split-media img { object-position: center 42%; }

.split-media img { width: 100%; height: 100%; object-fit: cover; }

.split-body h2 { font-size: 28px; margin-bottom: 16px; }
.split-body > p { margin-bottom: 18px; line-height: 1.95; }

.checklist { display: grid; gap: 12px; margin: 24px 0 28px; }

.checklist li {
  position: relative;
  padding-left: 28px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--color-gray-700);
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary-light);
}

.checklist li::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  width: 6px;
  height: 3px;
  border-left: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(-45deg);
}

/* ---------- 资质 ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

.cert {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 28px 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  text-align: center;
  transition: all var(--transition);
}

.cert:hover { border-color: rgba(255, 255, 255, 0.32); background: rgba(255, 255, 255, 0.07); }

.cert b {
  font-family: var(--font-num);
  font-size: 22px;
  color: #fff;
  letter-spacing: 0.04em;
}

.cert span { font-size: 13px; color: rgba(255, 255, 255, 0.55); }

/* ---------- 新闻 ---------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.news {
  display: flex;
  flex-direction: column;
  padding: 24px 22px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
  transition: all var(--transition);
}

.news:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); }

.news-date {
  font-family: var(--font-num);
  font-size: 12.5px;
  color: var(--color-gray-500);
  letter-spacing: 0.06em;
}

.news h3 { font-size: 16px; margin: 10px 0 10px; line-height: 1.6; }
.news p { font-size: 13.5px; color: var(--color-gray-500); line-height: 1.75; flex: 1; }

.news-link {
  margin-top: 16px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-primary);
}

/* ---------- 联系 ---------- */
.contact-wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.contact-info dl { display: grid; gap: 22px; margin-top: 26px; }

.contact-info dt {
  font-size: 12.5px;
  color: var(--color-gray-500);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.contact-info dd { font-size: 16px; color: var(--color-ink); line-height: 1.7; }

.contact-info dd a:hover { color: var(--color-primary); }

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

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

.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--color-gray-700);
}

.field label i { color: var(--color-primary); font-style: normal; }

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-ink);
  font-size: 14.5px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.1);
}

.field textarea { min-height: 112px; resize: vertical; }

.form .btn-primary {
  justify-self: start;      /* form 是 grid，不禁用就会拉成通栏红条 */
  min-width: 168px;
}

.form-note { font-size: 12.5px; color: var(--color-gray-500); line-height: 1.7; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #0e0e10;
  color: rgba(255, 255, 255, 0.55);
  font-size: 13.5px;
  padding: 56px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand img {
  height: 42px;
  margin-bottom: 18px;
  /* 原 logo 是深色字，黑底上几乎看不见，整体反白处理 */
  filter: brightness(0) invert(1);
  opacity: 0.92;
}
.footer-brand p { line-height: 1.9; max-width: 300px; }

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
  letter-spacing: 0.06em;
}

.footer-col li { margin-bottom: 10px; }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0 26px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
}

.footer-bottom a:hover { color: rgba(255, 255, 255, 0.8); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-grid, .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .contact-wrap { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero h1 { font-size: 36px; }
}

@media (max-width: 768px) {
  .section { padding: 52px 0; }
  .topbar { display: none; }
  .site-header .container { height: 66px; }
  .nav {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    background: #fff;
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .nav.open { display: flex; }
  .nav > li > a { padding: 13px 24px; font-size: 16px; }
  .nav > li > a::after { display: none; }
  .nav-toggle { display: flex; }
  .brand img { height: 36px; }
  .brand-text span { display: none; }

  .hero { min-height: auto; }
  .hero-inner { padding: 56px 0 52px; }
  .hero h1 { font-size: 29px; }
  .hero p { font-size: 15px; }
  .hero-media img { object-position: 68% center; }

  .trust .container { grid-template-columns: repeat(2, 1fr); }
  .trust-item { padding: 24px 12px; }
  .trust-item strong { font-size: 28px; }

  .cat-grid, .sol-grid, .case-grid, .news-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .sec-title { font-size: 24px; }
  .split-body h2 { font-size: 23px; }
}

/* ---------- 解决方案：无图深色卡变体 ---------- */
.sol-plain {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 240px;
  padding: 26px 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(140deg, #1b1c21 0%, #0f0f12 100%);
  transition: all var(--transition);
}

.sol-plain:hover {
  border-color: rgba(200, 16, 46, 0.6);
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

.sol-plain .no {
  margin-bottom: auto;
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.sol-plain h3 {
  color: #fff;
  font-size: 19px;
  margin-bottom: 8px;
}

.sol-plain p {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.6);
}

.sol-plain .models {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.02em;
}

/* ============================================================
   内页通用：页头 + 面包屑
   ============================================================ */
.page-hero {
  padding: 40px 0 52px;
  background: var(--color-gray-100);
  border-bottom: 1px solid var(--color-gray-200);
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--color-gray-500);
}

.crumb a { color: var(--color-gray-500); transition: color var(--transition); }
.crumb a:hover { color: var(--color-primary); }
.crumb i { font-style: normal; color: var(--color-gray-300); }
.crumb span { color: var(--color-gray-900); }

.page-hero h1 {
  font-size: 34px;
  margin-bottom: 14px;
}

.page-hero p {
  max-width: 720px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--color-gray-500);
}

.page-hero .en-sub {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-primary);
  text-transform: uppercase;
}

/* ============================================================
   产品中心：8 个系列
   ============================================================ */
.series-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.series-card {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 24px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
  transition: all var(--transition);
}

.series-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.series-body .no {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.series-body h2 {
  font-size: 22px;
  margin: 8px 0 4px;
}

.series-body .en {
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gray-500);
}

.series-body p {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--color-gray-500);
}

.series-count {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--color-gray-100);
  font-size: 12.5px;
  color: var(--color-gray-700);
}

.series-media {
  display: grid;
  place-items: center;
  height: 190px;
}

.series-media img {
  max-height: 190px;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 12px 16px rgba(17, 17, 17, 0.14));
  transition: transform 0.4s ease;
}

.series-card:hover .series-media img { transform: translateY(-4px) scale(1.03); }

/* ============================================================
   系列页 / 产品列表卡
   ============================================================ */
.plist {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr;      /* 所有行等高，不会因为标题行数不同而参差 */
  gap: 20px;
}

.pcard {
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  transition: all var(--transition);
}

.pcard:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); }

.pcard-media {
  position: relative;
  display: grid;
  place-items: center;
  height: 220px;
  padding: 20px;
  background: radial-gradient(72% 66% at 50% 56%, #f2f3f5 0%, #ffffff 74%);
}

.pcard-media img {
  max-height: 180px;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 12px 16px rgba(17, 17, 17, 0.13));
  transition: transform 0.4s ease;
}

.pcard:hover .pcard-media img { transform: translateY(-3px) scale(1.03); }

.pcard-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 3px 9px;
  border-radius: 4px;
  background: var(--color-primary);
  color: #fff;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.pcard-body { padding: 18px 20px 22px; display: flex; flex-direction: column; flex: 1; }

.pcard-model {
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--color-gray-500);
}

.pcard-body h3 {
  font-size: 17px;
  margin: 6px 0 10px;
  line-height: 1.5;
}

.pcard-body h3 a:hover { color: var(--color-primary); }

.pcard-kv {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-bottom: 16px;
  font-size: 12.5px;
  color: var(--color-gray-500);
}

.pcard-kv b { color: var(--color-gray-900); font-weight: 600; }

.pcard-actions { margin-top: auto; display: flex; gap: 10px; }

.pcard-actions .btn { padding: 9px 16px; font-size: 13px; }

/* ============================================================
   产品详情页
   ============================================================ */
.pd {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  padding: 48px 0 60px;
}

.pd-media {
  display: grid;
  place-items: center;
  min-height: 420px;
  padding: 32px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.pd-media img {
  max-height: 380px;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 16px 24px rgba(17, 17, 17, 0.14));
}

.pd-info h1 {
  font-size: 32px;
  margin: 8px 0 10px;
  line-height: 1.35;
}

.pd-model {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 11px;
  border-radius: 4px;
  background: var(--color-gray-100);
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--color-gray-700);
}

.pd-lead {
  margin: 18px 0 26px;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--color-gray-700);
}

.pd-kv {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-bottom: 28px;
  background: var(--color-gray-200);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  overflow: hidden;
}

.pd-kv div {
  padding: 14px 16px;
  background: #fff;
}

.pd-kv dt {
  font-size: 12px;
  color: var(--color-gray-500);
  margin-bottom: 3px;
}

.pd-kv dd {
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-ink);
}

.pd-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* 参数表 */
.spec-wrap {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  align-items: start;   /* 每组按自己内容高度，避免短组被拉高留大片空白 */
}

.spec-group {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}

.spec-group h3 {
  padding: 13px 18px;
  background: var(--color-gray-100);
  border-bottom: 1px solid var(--color-gray-200);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-ink);
}

.spec-group dl { padding: 4px 18px 12px; }

.spec-row {
  display: grid;
  grid-template-columns: 42% 1fr;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: 13.5px;
}

.spec-row:last-child { border-bottom: 0; }

.spec-row dt { color: var(--color-gray-500); }
.spec-row dd { color: var(--color-gray-900); line-height: 1.65; }

.spec-note {
  margin-top: 22px;
  padding: 16px 18px;
  border-left: 3px solid var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--color-gray-700);
}

/* 特点 / 场景 */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feat {
  padding: 22px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
}

.feat .no {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.feat h3 { font-size: 15.5px; margin: 8px 0 8px; }
.feat p { font-size: 13.5px; line-height: 1.8; color: var(--color-gray-500); }

.tag-row { display: flex; flex-wrap: wrap; gap: 10px; }

.tag-row span {
  padding: 7px 15px;
  border: 1px solid var(--color-gray-200);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--color-gray-700);
  background: #fff;
}

/* 相关产品 */
.rel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.rel {
  display: flex;
  flex-direction: column;
  padding: 20px 18px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
  transition: all var(--transition);
}

.rel:hover { border-color: var(--color-primary); box-shadow: var(--shadow-sm); }

.rel-img { height: 120px; display: grid; place-items: center; margin-bottom: 12px; }
.rel-img img { max-height: 120px; max-width: 100%; width: auto; height: auto; object-fit: contain; }

.rel h3 { font-size: 14.5px; line-height: 1.5; margin-bottom: 4px; }
.rel span { font-family: var(--font-num); font-size: 11.5px; color: var(--color-gray-500); letter-spacing: 0.08em; }

@media (max-width: 1024px) {
  .series-grid { grid-template-columns: 1fr; }
  .series-card { grid-template-columns: 1fr 200px; }
  .plist { grid-template-columns: repeat(2, 1fr); }
  .pd { grid-template-columns: 1fr; gap: 32px; }
  .spec-wrap { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .rel-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero h1 { font-size: 27px; }
  .pd-info h1 { font-size: 26px; }
}

@media (max-width: 768px) {
  .series-card { grid-template-columns: 1fr; gap: 16px; padding: 22px; }
  .series-media { height: 150px; }
  .series-media img { max-height: 150px; }
  .plist, .feat-grid { grid-template-columns: 1fr; }
  .pd { padding: 32px 0 44px; }
  .pd-media { min-height: 300px; padding: 20px; }
  .pd-media img { max-height: 280px; }
  .pd-kv { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 40% 1fr; }
  .rel-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero h1 { font-size: 23px; }
  .pd-info h1 { font-size: 23px; }
}

/* ============================================================
   关于我们：发展历程时间线
   ============================================================ */
.timeline {
  position: relative;
  padding-left: 32px;
  max-width: 880px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  /* 浅灰底上 #e8e8e8 几乎看不见，用 gray-300 才连得起来 */
  background: var(--color-gray-300);
}

.tl-item {
  position: relative;
  padding-bottom: 32px;
}

.tl-item:last-child { padding-bottom: 0; }

.tl-item::before {
  content: "";
  position: absolute;
  left: -31px;      /* 让圆心落在竖线中心上 */
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--color-primary);
}

.tl-year {
  display: block;
  font-family: var(--font-num);
  font-size: 19px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.tl-item h3 {
  font-size: 16.5px;
  margin: 4px 0 8px;
}

.tl-item p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-gray-500);
}

/* 资质墙 */
.cert-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cert-card {
  padding: 24px 20px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
  text-align: center;
}

.cert-card b {
  display: block;
  font-family: var(--font-num);
  font-size: 19px;
  color: var(--color-ink);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.cert-card span { font-size: 13px; color: var(--color-gray-500); }

@media (max-width: 768px) {
  .cert-wall { grid-template-columns: repeat(2, 1fr); }
  .timeline { padding-left: 24px; }
  .tl-item::before { left: -24px; }
}

/* ============================================================
   法务页（隐私政策 / 服务条款）
   ============================================================ */
.legal {
  max-width: 840px;
  margin: 0 auto;    /* 窄栏居中，长文在宽屏上不贴左 */
}

.legal .legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-bottom: 28px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--color-gray-100);
  font-size: 12.5px;
  color: var(--color-gray-500);
}

.legal h2 {
  font-size: 19px;
  margin: 36px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-gray-200);
}

.legal h2:first-of-type { margin-top: 8px; }

.legal h3 {
  font-size: 15.5px;
  margin: 20px 0 8px;
  color: var(--color-gray-900);
}

.legal p {
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--color-gray-700);
  margin-bottom: 12px;
}

.legal ul, .legal ol {
  margin: 0 0 14px;
  padding-left: 22px;
}

.legal li {
  list-style: disc;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--color-gray-700);
  margin-bottom: 7px;
}

.legal ol li { list-style: decimal; }

.legal strong { color: var(--color-ink); font-weight: 600; }

.legal a { color: var(--color-primary); }
.legal a:hover { text-decoration: underline; }

.legal .callout {
  margin: 18px 0;
  padding: 16px 18px;
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-primary-light);
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-gray-700);
}

.legal table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 18px;
  font-size: 13.5px;
}

.legal th, .legal td {
  padding: 10px 12px;
  border: 1px solid var(--color-gray-200);
  text-align: left;
  vertical-align: top;
  line-height: 1.75;
}

.legal th {
  background: var(--color-gray-100);
  color: var(--color-ink);
  font-weight: 600;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .legal h2 { font-size: 17px; }
  .legal p, .legal li { font-size: 14px; }
  .legal table { font-size: 12.5px; }
  .legal th, .legal td { padding: 8px; }
}

/* 表单同意勾选 */
.form-consent {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-gray-500);
}

.form-consent input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin-top: 3px;
  flex: 0 0 auto;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-consent a {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ============================================================
   新闻（/news/）— 列表复用 .case 卡片，详情用 .art 排版
   ============================================================ */

.case-grid a.case { color: inherit; }

/* 新闻列表：条目少时用两列，避免第二行只剩一张孤卡 */
.news-list { grid-template-columns: repeat(2, 1fr); gap: 24px; }

@media (max-width: 768px) {
  .news-list { grid-template-columns: 1fr; }
}

/* 卡片图文等高：标题换行数量不同时，底部日期行仍对齐 */
.case-grid .case {
  display: flex;
  flex-direction: column;
}

.case-grid .case-body {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.case-grid .case-body p { flex: 1; }

.art { max-width: 800px; margin: 0 auto; }

.art-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-bottom: 26px;
  padding: 10px 16px;
  border-left: 3px solid var(--color-primary);
  background: var(--color-gray-100);
  font-size: 12.5px;
  color: var(--color-gray-500);
}

.art-meta span:first-child {
  font-family: var(--font-num);
  letter-spacing: 0.04em;
  color: var(--color-gray-700);
}

.art p {
  font-size: 15.5px;
  line-height: 2;
  color: var(--color-gray-700);
  margin-bottom: 16px;
}

.art p.art-lead {
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--color-gray-900);
  padding-left: 18px;
  border-left: 3px solid var(--color-primary);
  margin-bottom: 30px;
}

.art h2 {
  font-size: 21px;
  margin: 40px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-gray-200);
}

.art h2:first-of-type { margin-top: 8px; }

.art strong { color: var(--color-ink); font-weight: 600; }

.art figure { margin: 28px 0; }

.art figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.art figcaption {
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--color-gray-500);
}

.art figure.art-cover { margin: 0 0 30px; }

/* 竖版长图（榜单海报、贺函）不铺满，限高居中 */
.art figure.tall img {
  width: auto;
  max-width: 100%;
  max-height: 760px;
  margin: 0 auto;
}

.art blockquote.art-quote {
  margin: 22px 0;
  padding: 20px 24px;
  background: var(--color-gray-100);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.art blockquote.art-quote p {
  font-size: 14.5px;
  line-height: 2;
  margin-bottom: 12px;
}

.art blockquote.art-quote cite {
  font-style: normal;
  font-size: 12.5px;
  color: var(--color-gray-500);
}

.art-box {
  margin: 20px 0 24px;
  padding: 18px 22px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
}

.art-box li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--color-gray-700);
}

.art-box li + li { margin-top: 8px; }

.art-box li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* 名单类长列表：两列紧凑排列 */
.art-box.list-2 ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
}

.art-box.list-2 li { line-height: 1.7; }

.art-box.list-2 li + li { margin-top: 0; }

@media (max-width: 600px) {
  .art-box.list-2 ul { grid-template-columns: 1fr; }
}

.art-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin: 38px 0 0;
  padding: 26px 26px 28px;
  border-radius: var(--radius);
  background: var(--color-gray-100);
  text-align: center;
}

.art-cta p {
  flex: 1 0 100%;
  font-size: 14.5px;
  margin-bottom: 4px;
}

.art-related {
  margin-top: 64px;
  padding-top: 34px;
  border-top: 1px solid var(--color-gray-200);
}

.art-related h2 { font-size: 19px; margin-bottom: 20px; }

/* 文中提示条（后续进展、相关阅读等） */
.art .art-note {
  margin: 26px 0 8px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-gray-700);
}

.art .art-note strong { color: var(--color-primary-dark); }

.art .art-note a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 900px) {
  .art p { font-size: 15px; }
  .art p.art-lead { font-size: 15.5px; }
  .art h2 { font-size: 19px; }
  .art figure.tall img { max-height: 520px; }
}

/* ---------- 选型对比表 ---------- */
.cmp-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.cmp-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
  font-size: 13.5px;
}

.cmp-table th,
.cmp-table td {
  padding: 13px 14px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--color-gray-200);
}

.cmp-table thead th {
  background: var(--color-gray-100);
  color: var(--color-ink);
  font-weight: 700;
}

.cmp-table tbody tr:last-child td { border-bottom: 0; }
.cmp-table tbody tr.is-current { background: var(--color-primary-light); }
.cmp-table tbody tr.is-current td:first-child { color: var(--color-primary-dark); font-weight: 700; }

.cmp-table a { color: var(--color-primary); font-weight: 600; }
.cmp-table a:hover { text-decoration: underline; text-underline-offset: 3px; }

.tag-cur {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 7px;
  border-radius: 3px;
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-style: normal;
  font-weight: 600;
  vertical-align: 2px;
}

/* ---------- 尺寸要点 ---------- */
.dim-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.dim-facts > div {
  padding: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
}

.dim-facts dt {
  margin-bottom: 8px;
  font-size: 12.5px;
  color: var(--color-gray-500);
}

.dim-facts dd {
  font-family: var(--font-num);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-ink);
}

.dim-facts dd i {
  margin-left: 3px;
  font-size: 12.5px;
  font-style: normal;
  font-weight: 500;
  color: var(--color-gray-500);
}

.dim-note {
  max-width: 860px;
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--color-gray-500);
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 900px; }

.faq-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.faq-item:first-child { padding-top: 0; }
.faq-item:last-child { padding-bottom: 0; border-bottom: 0; }
.faq-item h3 { margin-bottom: 9px; font-size: 16px; }

.faq-item p {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--color-gray-700);
}

@media (max-width: 900px) {
  .dim-facts { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .dim-facts > div { padding: 15px; }
  .dim-facts dd { font-size: 18px; }
  .cmp-table { font-size: 12.5px; }
  .cmp-table th,
  .cmp-table td { padding: 10px 12px; }
  .faq-item h3 { font-size: 15px; }
  .faq-item p { font-size: 14px; }
}

/* ---------- 404 页面 ---------- */
.err-hero {
  text-align: center;
  padding: 80px 0 72px;
}

.err-code {
  font-family: var(--font-num);
  font-size: 104px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  opacity: 0.13;
  margin-bottom: 4px;
}

.err-hero h1 {
  font-size: 30px;
  margin-bottom: 14px;
}

.err-hero p.err-lead {
  max-width: 560px;
  margin: 0 auto;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--color-gray-500);
}

.err-hero p.err-lead-en {
  max-width: 560px;
  margin: 10px auto 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-gray-500);
}

.err-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 28px;
}

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

.err-links a {
  display: block;
  padding: 20px 16px;
  text-align: center;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  transition: var(--transition);
}

.err-links a strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15.5px;
  color: var(--color-ink);
  transition: var(--transition);
}

.err-links a span {
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--color-gray-500);
}

.err-links a:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.err-links a:hover strong { color: var(--color-primary); }

.err-help {
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--color-gray-200);
  text-align: center;
}

.err-help p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--color-gray-700);
}

.err-help p strong { color: var(--color-ink); }

.err-contact { margin-top: 12px; }

.err-contact a {
  color: var(--color-primary);
  font-weight: 600;
}

.err-contact a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.err-contact i {
  margin: 0 10px;
  font-style: normal;
  color: var(--color-gray-300);
}

@media (max-width: 900px) {
  .err-hero { padding: 56px 0 46px; }
  .err-code { font-size: 76px; }
  .err-hero h1 { font-size: 24px; }
  .err-hero p.err-lead { font-size: 14.5px; }
  .err-links { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .err-links a { padding: 16px 12px; }
  .err-contact a { display: block; padding: 3px 0; }
  .err-contact i { display: none; }
}

/* ===== 大屏适配（自动生成）===== */
@media (min-width: 1500px) {
  :root { --container: 1320px; }
  .hero { min-height: 620px; }
  body { font-size: 16.2px; }
  .sec-label { font-size: 14px; }
  .sec-title { font-size: 32.4px; }
  .sec-desc { font-size: 16.2px; }
  .btn { font-size: 16.2px; }
  .topbar { font-size: 14px; }
  .brand-text strong { font-size: 18.4px; }
  .brand-text span { font-size: 11.9px; }
  .nav > li > a { font-size: 17.3px; }
  .nav-toggle { font-size: 21.6px; }
  .hero-eyebrow { font-size: 14px; }
  .hero h1 { font-size: 47.5px; }
  .hero p { font-size: 17.3px; }
  .hero-badges span { font-size: 13.5px; }
  .trust-item strong { font-size: 38.9px; }
  .trust-item strong small { font-size: 16.2px; }
  .trust-item span { font-size: 14.6px; }
  .cat-no { font-size: 13px; }
  .cat h3 { font-size: 19.4px; }
  .cat p { font-size: 14.6px; }
  .cat-more { font-size: 14px; }
  .sol-tag { font-size: 12.4px; }
  .case-meta { font-size: 13.5px; }
  .checklist li { font-size: 15.7px; }
  .cert b { font-size: 23.8px; }
  .news-date { font-size: 13.5px; }
  .news-link { font-size: 14.6px; }
  .contact-info dt { font-size: 13.5px; }
  .field label { font-size: 14px; }
  .field select { font-size: 15.7px; }
  .site-footer { font-size: 14.6px; }
  .footer-col h4 { font-size: 16.2px; }
  .footer-bottom { font-size: 13.5px; }
  .nav { font-size: 17.3px; }
  .sol-plain .no { font-size: 13.5px; }
  .sol-plain h3 { font-size: 20.5px; }
  .sol-plain p { font-size: 14px; }
  .sol-plain .models { font-size: 13px; }
  .crumb { font-size: 14px; }
  .page-hero h1 { font-size: 36.7px; }
  .page-hero p { font-size: 16.7px; }
  .page-hero .en-sub { font-size: 13.5px; }
  .series-body .no { font-size: 13px; }
  .series-body h2 { font-size: 23.8px; }
  .series-body .en { font-size: 12.4px; }
  .series-body p { font-size: 14.6px; }
  .series-count { font-size: 13.5px; }
  .pcard-badge { font-size: 12.4px; }
  .pcard-model { font-size: 12.4px; }
  .pcard-body h3 { font-size: 18.4px; }
  .pcard-kv { font-size: 13.5px; }
  .pd-info h1 { font-size: 34.6px; }
  .pd-model { font-size: 13.5px; }
  .pd-lead { font-size: 16.7px; }
  .pd-kv dt { font-size: 13px; }
  .pd-kv dd { font-size: 16.2px; }
  .spec-group h3 { font-size: 14px; }
  .spec-row { font-size: 14.6px; }
  .spec-note { font-size: 14.6px; }
  .feat .no { font-size: 13px; }
  .tag-row span { font-size: 14.6px; }
  .tl-year { font-size: 20.5px; }
  .tl-item h3 { font-size: 17.8px; }
  .tl-item p { font-size: 15.1px; }
  .cert-card b { font-size: 20.5px; }
  .legal .legal-meta { font-size: 13.5px; }
  .legal h2 { font-size: 20.5px; }
  .legal h3 { font-size: 16.7px; }
  .legal p { font-size: 15.7px; }
  .legal li { font-size: 15.7px; }
  .legal .callout { font-size: 15.1px; }
  .legal table { font-size: 14.6px; }
  .form-consent { font-size: 14px; }
  .art-meta { font-size: 13.5px; }
  .art p { font-size: 16.7px; }
  .art p.art-lead { font-size: 17.8px; }
  .art h2 { font-size: 22.7px; }
  .art figcaption { font-size: 13.5px; }
  .art blockquote.art-quote p { font-size: 15.7px; }
  .art blockquote.art-quote cite { font-size: 13.5px; }
  .art-box li { font-size: 15.7px; }
  .art-cta p { font-size: 15.7px; }
  .art .art-note { font-size: 15.1px; }
  .cmp-table { font-size: 14.6px; }
  .tag-cur { font-size: 11.9px; }
  .dim-facts dt { font-size: 13.5px; }
  .dim-facts dd { font-size: 22.7px; }
  .dim-facts dd i { font-size: 13.5px; }
  .dim-note { font-size: 14.6px; }
  .faq-item p { font-size: 15.7px; }
  .err-code { font-size: 112.3px; }
  .err-hero h1 { font-size: 32.4px; }
  .err-hero p.err-lead { font-size: 16.7px; }
  .err-links a strong { font-size: 16.7px; }
  .err-links a span { font-size: 12.4px; }
  .err-help p { font-size: 15.7px; }
  .hero p { max-width: 620px; }
  .page-hero p { max-width: 790px; }
  .timeline { max-width: 950px; }
  .legal { max-width: 880px; }
  .err-hero p.err-lead { max-width: 620px; }
  .cat-img { flex: 0 0 150px; height: 150px; }
  .pcard-media { height: 250px; }
  .pd-media { min-height: 480px; }
}
@media (min-width: 1900px) {
  :root { --container: 1440px; }
  .hero { min-height: 660px; }
  body { font-size: 17.7px; }
  .sec-label { font-size: 15.3px; }
  .sec-title { font-size: 35.4px; }
  .sec-desc { font-size: 17.7px; }
  .btn { font-size: 17.7px; }
  .topbar { font-size: 15.3px; }
  .brand-text strong { font-size: 20.1px; }
  .brand-text span { font-size: 13px; }
  .nav > li > a { font-size: 18.9px; }
  .nav-toggle { font-size: 23.6px; }
  .hero-eyebrow { font-size: 15.3px; }
  .hero h1 { font-size: 51.9px; }
  .hero p { font-size: 18.9px; }
  .hero-badges span { font-size: 14.8px; }
  .trust-item strong { font-size: 42.5px; }
  .trust-item strong small { font-size: 17.7px; }
  .trust-item span { font-size: 15.9px; }
  .cat-no { font-size: 14.2px; }
  .cat h3 { font-size: 21.2px; }
  .cat p { font-size: 15.9px; }
  .cat-more { font-size: 15.3px; }
  .sol-tag { font-size: 13.6px; }
  .case-meta { font-size: 14.8px; }
  .checklist li { font-size: 17.1px; }
  .cert b { font-size: 26px; }
  .news-date { font-size: 14.8px; }
  .news-link { font-size: 15.9px; }
  .contact-info dt { font-size: 14.8px; }
  .field label { font-size: 15.3px; }
  .field select { font-size: 17.1px; }
  .site-footer { font-size: 15.9px; }
  .footer-col h4 { font-size: 17.7px; }
  .footer-bottom { font-size: 14.8px; }
  .nav { font-size: 18.9px; }
  .sol-plain .no { font-size: 14.8px; }
  .sol-plain h3 { font-size: 22.4px; }
  .sol-plain p { font-size: 15.3px; }
  .sol-plain .models { font-size: 14.2px; }
  .crumb { font-size: 15.3px; }
  .page-hero h1 { font-size: 40.1px; }
  .page-hero p { font-size: 18.3px; }
  .page-hero .en-sub { font-size: 14.8px; }
  .series-body .no { font-size: 14.2px; }
  .series-body h2 { font-size: 26px; }
  .series-body .en { font-size: 13.6px; }
  .series-body p { font-size: 15.9px; }
  .series-count { font-size: 14.8px; }
  .pcard-badge { font-size: 13.6px; }
  .pcard-model { font-size: 13.6px; }
  .pcard-body h3 { font-size: 20.1px; }
  .pcard-kv { font-size: 14.8px; }
  .pd-info h1 { font-size: 37.8px; }
  .pd-model { font-size: 14.8px; }
  .pd-lead { font-size: 18.3px; }
  .pd-kv dt { font-size: 14.2px; }
  .pd-kv dd { font-size: 17.7px; }
  .spec-group h3 { font-size: 15.3px; }
  .spec-row { font-size: 15.9px; }
  .spec-note { font-size: 15.9px; }
  .feat .no { font-size: 14.2px; }
  .tag-row span { font-size: 15.9px; }
  .tl-year { font-size: 22.4px; }
  .tl-item h3 { font-size: 19.5px; }
  .tl-item p { font-size: 16.5px; }
  .cert-card b { font-size: 22.4px; }
  .legal .legal-meta { font-size: 14.8px; }
  .legal h2 { font-size: 22.4px; }
  .legal h3 { font-size: 18.3px; }
  .legal p { font-size: 17.1px; }
  .legal li { font-size: 17.1px; }
  .legal .callout { font-size: 16.5px; }
  .legal table { font-size: 15.9px; }
  .form-consent { font-size: 15.3px; }
  .art-meta { font-size: 14.8px; }
  .art p { font-size: 18.3px; }
  .art p.art-lead { font-size: 19.5px; }
  .art h2 { font-size: 24.8px; }
  .art figcaption { font-size: 14.8px; }
  .art blockquote.art-quote p { font-size: 17.1px; }
  .art blockquote.art-quote cite { font-size: 14.8px; }
  .art-box li { font-size: 17.1px; }
  .art-cta p { font-size: 17.1px; }
  .art .art-note { font-size: 16.5px; }
  .cmp-table { font-size: 15.9px; }
  .tag-cur { font-size: 13px; }
  .dim-facts dt { font-size: 14.8px; }
  .dim-facts dd { font-size: 24.8px; }
  .dim-facts dd i { font-size: 14.8px; }
  .dim-note { font-size: 15.9px; }
  .faq-item p { font-size: 17.1px; }
  .err-code { font-size: 122.7px; }
  .err-hero h1 { font-size: 35.4px; }
  .err-hero p.err-lead { font-size: 18.3px; }
  .err-links a strong { font-size: 18.3px; }
  .err-links a span { font-size: 13.6px; }
  .err-help p { font-size: 17.1px; }
  .hero p { max-width: 670px; }
  .page-hero p { max-width: 850px; }
  .timeline { max-width: 1020px; }
  .legal { max-width: 920px; }
  .err-hero p.err-lead { max-width: 670px; }
  .cat-img { flex: 0 0 168px; height: 168px; }
  .pcard-media { height: 280px; }
  .pd-media { min-height: 540px; }
}
@media (min-width: 2400px) {
  :root { --container: 1580px; }
  .hero { min-height: 720px; }
  body { font-size: 19.2px; }
  .sec-label { font-size: 16.6px; }
  .sec-title { font-size: 38.4px; }
  .sec-desc { font-size: 19.2px; }
  .btn { font-size: 19.2px; }
  .topbar { font-size: 16.6px; }
  .brand-text strong { font-size: 21.8px; }
  .brand-text span { font-size: 14.1px; }
  .nav > li > a { font-size: 20.5px; }
  .nav-toggle { font-size: 25.6px; }
  .hero-eyebrow { font-size: 16.6px; }
  .hero h1 { font-size: 56.3px; }
  .hero p { font-size: 20.5px; }
  .hero-badges span { font-size: 16px; }
  .trust-item strong { font-size: 46.1px; }
  .trust-item strong small { font-size: 19.2px; }
  .trust-item span { font-size: 17.3px; }
  .cat-no { font-size: 15.4px; }
  .cat h3 { font-size: 23px; }
  .cat p { font-size: 17.3px; }
  .cat-more { font-size: 16.6px; }
  .sol-tag { font-size: 14.7px; }
  .case-meta { font-size: 16px; }
  .checklist li { font-size: 18.6px; }
  .cert b { font-size: 28.2px; }
  .news-date { font-size: 16px; }
  .news-link { font-size: 17.3px; }
  .contact-info dt { font-size: 16px; }
  .field label { font-size: 16.6px; }
  .field select { font-size: 18.6px; }
  .site-footer { font-size: 17.3px; }
  .footer-col h4 { font-size: 19.2px; }
  .footer-bottom { font-size: 16px; }
  .nav { font-size: 20.5px; }
  .sol-plain .no { font-size: 16px; }
  .sol-plain h3 { font-size: 24.3px; }
  .sol-plain p { font-size: 16.6px; }
  .sol-plain .models { font-size: 15.4px; }
  .crumb { font-size: 16.6px; }
  .page-hero h1 { font-size: 43.5px; }
  .page-hero p { font-size: 19.8px; }
  .page-hero .en-sub { font-size: 16px; }
  .series-body .no { font-size: 15.4px; }
  .series-body h2 { font-size: 28.2px; }
  .series-body .en { font-size: 14.7px; }
  .series-body p { font-size: 17.3px; }
  .series-count { font-size: 16px; }
  .pcard-badge { font-size: 14.7px; }
  .pcard-model { font-size: 14.7px; }
  .pcard-body h3 { font-size: 21.8px; }
  .pcard-kv { font-size: 16px; }
  .pd-info h1 { font-size: 41px; }
  .pd-model { font-size: 16px; }
  .pd-lead { font-size: 19.8px; }
  .pd-kv dt { font-size: 15.4px; }
  .pd-kv dd { font-size: 19.2px; }
  .spec-group h3 { font-size: 16.6px; }
  .spec-row { font-size: 17.3px; }
  .spec-note { font-size: 17.3px; }
  .feat .no { font-size: 15.4px; }
  .tag-row span { font-size: 17.3px; }
  .tl-year { font-size: 24.3px; }
  .tl-item h3 { font-size: 21.1px; }
  .tl-item p { font-size: 17.9px; }
  .cert-card b { font-size: 24.3px; }
  .legal .legal-meta { font-size: 16px; }
  .legal h2 { font-size: 24.3px; }
  .legal h3 { font-size: 19.8px; }
  .legal p { font-size: 18.6px; }
  .legal li { font-size: 18.6px; }
  .legal .callout { font-size: 17.9px; }
  .legal table { font-size: 17.3px; }
  .form-consent { font-size: 16.6px; }
  .art-meta { font-size: 16px; }
  .art p { font-size: 19.8px; }
  .art p.art-lead { font-size: 21.1px; }
  .art h2 { font-size: 26.9px; }
  .art figcaption { font-size: 16px; }
  .art blockquote.art-quote p { font-size: 18.6px; }
  .art blockquote.art-quote cite { font-size: 16px; }
  .art-box li { font-size: 18.6px; }
  .art-cta p { font-size: 18.6px; }
  .art .art-note { font-size: 17.9px; }
  .cmp-table { font-size: 17.3px; }
  .tag-cur { font-size: 14.1px; }
  .dim-facts dt { font-size: 16px; }
  .dim-facts dd { font-size: 26.9px; }
  .dim-facts dd i { font-size: 16px; }
  .dim-note { font-size: 17.3px; }
  .faq-item p { font-size: 18.6px; }
  .err-code { font-size: 133.1px; }
  .err-hero h1 { font-size: 38.4px; }
  .err-hero p.err-lead { font-size: 19.8px; }
  .err-links a strong { font-size: 19.8px; }
  .err-links a span { font-size: 14.7px; }
  .err-help p { font-size: 18.6px; }
  .hero p { max-width: 720px; }
  .page-hero p { max-width: 920px; }
  .timeline { max-width: 1100px; }
  .legal { max-width: 960px; }
  .err-hero p.err-lead { max-width: 720px; }
  .cat-img { flex: 0 0 190px; height: 190px; }
  .pcard-media { height: 320px; }
  .pd-media { min-height: 620px; }
}