/* ============================================================
 * LEADWAY 立维 — 统一设计系统
 * 颜色 / 间距 / 圆角 / 阴影 / 按钮 / 卡片 全部抽取为 CSS 变量与
 * 复用 class，保证各页面视觉一致。纯手写，无外部框架。
 * ============================================================ */

/* ---------- 设计令牌（Design Tokens） ---------- */
:root {
  /* 品牌色 */
  --c-blue: #14448C;
  /* 深科技蓝：头部、主按钮、标题强调 */
  --c-blue-bright: #1E6BD6;
  /* 亮蓝：链接、hover、点缀 */
  --c-accent: #F25C1E;
  /* 橙红强调：关键数据、CTA、分类图标 */
  --c-ink: #16202E;
  /* 墨色文字 */
  --c-muted: #6B7785;
  /* 辅助灰 */
  --c-surface: #F4F7FB;
  /* 浅底 */
  --c-white: #FFFFFF;
  /* 卡片白 */
  --c-line: #E4EAF2;
  /* 描边线 */

  /* 渐变 */
  --grad-hero: linear-gradient(135deg, #0E2F66 0%, #14448C 45%, #1E6BD6 100%);
  --grad-blue-soft: linear-gradient(180deg, #F4F7FB 0%, #FFFFFF 100%);

  /* 间距（8px 栅格） */
  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 32px;
  --sp-5: 48px;
  --sp-6: 64px;
  --sp-7: 96px;

  /* 圆角 */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-pill: 999px;

  /* 阴影 */
  --sh-sm: 0 1px 2px rgba(20, 68, 140, 0.06);
  --sh-md: 0 6px 20px rgba(20, 68, 140, 0.08);
  --sh-lg: 0 16px 40px rgba(20, 68, 140, 0.12);

  /* 字体 */
  --font-sans: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Segoe UI", Roboto, sans-serif;
  --font-num: "Segoe UI", "Roboto", "Helvetica Neue", Arial, sans-serif;

  /* 容器 */
  --container: 1400px;
  --header-h: 68px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--c-ink);
  background: var(--c-white);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--c-blue-bright);
  text-decoration: none;
  transition: color .2s;
}

a:hover {
  color: var(--c-accent);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 var(--sp-2);
  color: var(--c-ink);
  line-height: 1.25;
  font-weight: 700;
}

h1 {
  letter-spacing: 1px;
}

h2 {
  letter-spacing: .5px;
}

p {
  margin: 0 0 var(--sp-2);
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ---------- 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.section {
  padding: var(--sp-6) 0;
}

.section--surface {
  background: var(--c-surface);
}

.section--tight {
  padding: var(--sp-5) 0;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--sp-5);
}

.section-head .eyebrow {
  display: inline-block;
  color: var(--c-accent);
  font-weight: 700;
  letter-spacing: 2px;
  font-size: 13px;
  margin-bottom: var(--sp-1);
}

.section-head h2 {
  font-size: 30px;
}

.section-head p {
  color: var(--c-muted);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--r-pill);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .2s ease;
  line-height: 1;
  font-family: var(--font-sans);
}

.btn--primary {
  background: var(--c-accent);
  color: #fff;
  box-shadow: var(--sh-md);
}

.btn--primary:hover {
  background: #d94e14;
  color: #fff;
  transform: translateY(-1px);
}

.btn--blue {
  background: var(--c-blue);
  color: #fff;
}

.btn--blue:hover {
  background: var(--c-blue-bright);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: var(--c-blue);
  border-color: var(--c-line);
}

.btn--ghost:hover {
  border-color: var(--c-blue-bright);
  color: var(--c-blue-bright);
}

.btn--light {
  background: #fff;
  color: var(--c-blue);
}

.btn--light:hover {
  background: var(--c-surface);
  color: var(--c-blue-bright);
}

.btn--block {
  width: 100%;
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  transition: all .25s ease;
}

.card:hover {
  box-shadow: var(--sh-md);
  transform: translateY(-3px);
  border-color: #cfe0f5;
}

/* ---------- 头部导航（吸顶） ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-line);
}

.site-header .nav-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  height: 45px;
  width: auto;
}

.brand .brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand .brand-cn {
  font-weight: 800;
  font-size: 18px;
  color: var(--c-blue);
  letter-spacing: 1px;
}

.brand .brand-en {
  font-size: 11px;
  color: var(--c-muted);
  letter-spacing: 3px;
  font-family: var(--font-num);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.nav-links a {
  color: var(--c-ink);
  font-weight: 600;
  font-size: 16px;
  position: relative;
  padding: 6px 10px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--c-accent);
  transition: width .25s;
}

.nav-links a:hover {
  color: var(--c-blue-bright);
}

.nav-links a.active {
  color: var(--c-blue);
}

.nav-links a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 42px;
  height: 42px;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--c-blue);
  margin: 5px 0;
  border-radius: 2px;
  transition: .25s;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: var(--grad-hero);
  padding: var(--sp-7) 0 var(--sp-6);
}

/* 科技线条 / 线路板质感点缀 */
.hero::before,
.hero::after {
  content: '';
  position: absolute;
  pointer-events: none;
}

.hero::before {
  top: -120px;
  right: -120px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(30, 107, 214, .35), transparent 60%);
}

.hero::after {
  bottom: -160px;
  left: -80px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle at 70% 70%, rgba(242, 92, 30, .22), transparent 60%);
}

.hero .circuit {
  position: absolute;
  inset: 0;
  opacity: .16;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .6) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(circle at 80% 20%, #000, transparent 70%);
  mask-image: radial-gradient(circle at 80% 20%, #000, transparent 70%);
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: var(--sp-6);
  align-items: center;
}

.hero-text {
  max-width: 600px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: heroIn .9s var(--ease-out) .35s both;
}

.hero-float {
  width: 100%;
  max-width: 480px;
  animation: heroFloat 6s ease-in-out infinite;
}

.product-svg {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 10px 30px rgba(6, 18, 43, .35));
}

@keyframes heroFloat {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-14px);
  }
}

.hero h1 {
  font-size: 44px;
  color: #fff;
  max-width: 720px;
}

.hero .hero-sub {
  font-size: 18px;
  color: rgba(255, 255, 255, .85);
  max-width: 600px;
  margin-bottom: var(--sp-4);
}

.hero .hero-cta {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: var(--r-pill);
  font-size: 13px;
  margin-bottom: var(--sp-3);
  letter-spacing: 1px;
}

.hero .hero-badge b {
  color: #ffd9c7;
}

/* ---------- 实力 / 亮点条 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
}

.stat {
  text-align: center;
  padding: var(--sp-3);
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
}

.stat .num {
  font-size: 34px;
  font-weight: 800;
  color: var(--c-blue);
  font-family: var(--font-num);
}

.stat .num em {
  color: var(--c-accent);
  font-style: normal;
}

.stat .label {
  color: var(--c-muted);
  font-size: 14px;
  margin-top: 4px;
}

/* ---------- 产品分类卡片 ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}

.cat-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--sp-3);
  text-decoration: none;
  color: inherit;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  transition: all .25s ease;
  position: relative;
  overflow: hidden;
}

.cat-card:hover {
  box-shadow: var(--sh-md);
  transform: translateY(-3px);
  border-color: #cfe0f5;
}

.cat-card .cat-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--c-blue), var(--c-blue-bright));
  color: #fff;
}

.cat-card .cat-icon svg {
  width: 28px;
  height: 28px;
}

.cat-card h3 {
  font-size: 18px;
  margin: 4px 0 0;
}

.cat-card .cat-en {
  font-size: 12px;
  color: var(--c-muted);
  letter-spacing: 1px;
  font-family: var(--font-num);
}

.cat-card p {
  font-size: 14px;
  color: var(--c-muted);
  margin: 0;
}

.cat-card .cat-more {
  margin-top: auto;
  color: var(--c-accent);
  font-weight: 700;
  font-size: 14px;
}

/* ---------- 市场布局 ---------- */
.market-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-2);
}

.market-item {
  text-align: center;
  padding: var(--sp-3) var(--sp-2);
}

.market-item .m-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--sp-2);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  color: var(--c-accent);
}

.market-item .m-icon svg {
  width: 30px;
  height: 30px;
}

.market-item h4 {
  font-size: 16px;
  margin-bottom: 4px;
}

.market-item p {
  font-size: 13px;
  color: var(--c-muted);
  margin: 0;
}

/* ---------- 引流区块 ---------- */
.cta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}

.cta-card {
  padding: var(--sp-4);
  border-radius: var(--r-lg);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-card h3 {
  color: #fff;
}

.cta-card p {
  color: rgba(255, 255, 255, .85);
}

.cta-card--blue {
  background: linear-gradient(135deg, #14448C, #1E6BD6);
}

.cta-card--accent {
  background: linear-gradient(135deg, #d94e14, #F25C1E);
}

.cta-card--ink {
  background: linear-gradient(135deg, #16202E, #2a3a52);
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #0E1F3D;
  color: #c7d3e6;
  padding: var(--sp-6) 0 var(--sp-4);
}

.site-footer .foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--sp-4);
}

.site-footer .brand .brand-cn {
  color: #fff;
}

.site-footer .brand .brand-en {
  color: #8fa6c8;
}

.site-footer h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: var(--sp-2);
  letter-spacing: 1px;
}

.site-footer ul li {
  margin-bottom: 8px;
}

.site-footer ul a {
  color: #c7d3e6;
  font-size: 14px;
}

.site-footer ul a:hover {
  color: #fff;
}

.site-footer .foot-contact p {
  margin: 4px 0;
  font-size: 14px;
  color: #c7d3e6;
}

.site-footer .foot-bottom {
  margin-top: var(--sp-4);
  padding-top: var(--sp-3);
  border-top: 1px solid rgba(255, 255, 255, .1);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: #8fa6c8;
}

/* ---------- 产品列表页 ---------- */
.page-hero {
  background: var(--grad-blue-soft);
  border-bottom: 1px solid var(--c-line);
  padding: var(--sp-5) 0;
}

.page-hero h1 {
  font-size: 32px;
}

.page-hero p {
  color: var(--c-muted);
  margin: 0;
}

.product-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--sp-4);
  align-items: start;
}

.cat-filter {
  position: sticky;
  top: calc(var(--header-h) + 16px);
}

.cat-filter .filter-title {
  font-size: 14px;
  color: var(--c-muted);
  margin-bottom: var(--sp-2);
  letter-spacing: 1px;
}

.cat-filter ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.cat-filter a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: var(--r-md);
  color: var(--c-ink);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
  transition: .2s;
}

.cat-filter a .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-muted);
}

.cat-filter a:hover {
  background: var(--c-surface);
}

.cat-filter a.active {
  background: var(--c-blue);
  color: #fff;
  border-color: var(--c-blue);
}

.cat-filter a.active .dot {
  background: #fff;
}

.cat-filter a .count {
  margin-left: auto;
  font-size: 12px;
  color: var(--c-muted);
  font-family: var(--font-num);
}

.cat-filter a.active .count {
  color: rgba(255, 255, 255, .8);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}

.product-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}

/* 产品图：参考图作背景（压暗）+ 电源模块插画叠加 */
.product-card .thumb {
  --p-color: #1E6BD6;
  height: 150px;
  display: grid;
  place-items: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  background-color: #0b1733;
  background-image:
    linear-gradient(rgba(10, 21, 48, .5), rgba(10, 21, 48, .5)),
    url(product-bg.png);
  background-size: cover;
  background-position: center;
}

.product-card .thumb .thumb-art {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0 10px;
}

.product-card .thumb .module-svg {
  height: 88px;
  width: auto;
  filter: drop-shadow(0 8px 18px rgba(7, 18, 44, .5));
}

.product-card .thumb .model-tag {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  z-index: 3;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 1px;
  background: rgba(255, 255, 255, .14);
  padding: 5px 14px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(255, 255, 255, .3);
  box-shadow: 0 6px 18px rgba(7, 18, 44, .45);
  backdrop-filter: blur(2px);
  white-space: nowrap;
}

.product-card .thumb .accent-bar {
  position: absolute;
  left: 0;
  top: 0;
  width: 5px;
  height: 100%;
  background: var(--c-accent);
  z-index: 3;
}

.product-card .pc-body {
  padding: var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.product-card .pc-model {
  font-family: var(--font-num);
  font-weight: 700;
  color: var(--c-blue);
  font-size: 15px;
}

.product-card .pc-name {
  font-size: 16px;
  font-weight: 700;
  margin: 0;
}

.product-card .pc-summary {
  font-size: 13px;
  color: var(--c-muted);
  margin: 0;
  flex: 1;
}

.product-card .pc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.product-card .pc-meta span {
  font-size: 12px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  color: var(--c-ink);
  padding: 3px 9px;
  border-radius: var(--r-pill);
  font-family: var(--font-num);
}

.empty-state {
  text-align: center;
  color: var(--c-muted);
  padding: var(--sp-5);
}

/* ---------- 产品详情页 ---------- */
.detail-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: var(--sp-5);
  align-items: start;
}

/* 产品详情图：参考图作背景（压暗）+ 电源模块插画叠加 */
.detail-figure {
  --p-color: #1E6BD6;
  background-color: #0b1733;
  border-radius: var(--r-lg);
  height: 360px;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  color: #fff;
  background-image:
    linear-gradient(rgba(10, 21, 48, .5), rgba(10, 21, 48, .5)),
    url(product-bg.png);
  background-size: cover;
  background-position: center;
}

.detail-figure .fig-art {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0 20px;
}

.detail-figure .module-svg {
  height: 220px;
  width: auto;
  filter: drop-shadow(0 16px 34px rgba(7, 18, 44, .55));
}

.detail-figure .accent-bar {
  position: absolute;
  left: 0;
  top: 0;
  width: 6px;
  height: 100%;
  background: var(--c-accent);
  z-index: 3;
}

.detail-figure .fig-model {
  position: absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 3;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 26px;
  letter-spacing: 2px;
  background: rgba(255, 255, 255, .14);
  padding: 12px 26px;
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 255, 255, .3);
  box-shadow: 0 10px 30px rgba(7, 18, 44, .5);
  backdrop-filter: blur(2px);
  white-space: nowrap;
}

.detail-figure .fig-watermark {
  position: absolute;
  right: -30px;
  bottom: -30px;
  font-size: 140px;
  font-weight: 800;
  opacity: .08;
  font-family: var(--font-num);
  z-index: 1;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
}

.spec-table caption {
  text-align: left;
  font-weight: 700;
  font-size: 16px;
  margin-bottom: var(--sp-2);
  color: var(--c-ink);
}

.spec-table th,
.spec-table td {
  text-align: left;
  padding: 11px 14px;
  border-bottom: 1px solid var(--c-line);
  font-size: 14px;
}

.spec-table th {
  width: 38%;
  color: var(--c-muted);
  font-weight: 600;
  background: var(--c-surface);
}

.spec-table td {
  color: var(--c-ink);
  font-family: var(--font-num);
}

.detail-title {
  font-size: 28px;
}

.detail-badge {
  display: inline-block;
  font-size: 12px;
  color: var(--c-accent);
  font-weight: 700;
  background: #fff1ea;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  margin-bottom: var(--sp-2);
}

.detail-summary {
  color: var(--c-muted);
  font-size: 15px;
}

.detail-block {
  margin-top: var(--sp-4);
}

.detail-block h3 {
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-block h3::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--c-accent);
  border-radius: 2px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list span {
  font-size: 13px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  padding: 6px 14px;
  border-radius: var(--r-pill);
}

.download-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.download-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  color: var(--c-ink);
  font-weight: 600;
  transition: .2s;
  background: var(--c-white);
}

.download-list a:hover {
  border-color: var(--c-blue-bright);
  color: var(--c-blue-bright);
  box-shadow: var(--sh-sm);
}

.download-list .dl-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--r-sm);
  background: #eaf1fb;
  color: var(--c-blue);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.download-list .dl-icon svg {
  width: 20px;
  height: 20px;
}

.inquiry-box {
  background: var(--grad-hero);
  color: #fff;
  border-radius: var(--r-lg);
  padding: var(--sp-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.inquiry-box h3 {
  color: #fff;
  margin: 0 0 4px;
}

.inquiry-box p {
  color: rgba(255, 255, 255, .85);
  margin: 0;
}

/* ---------- 技术资料页 ---------- */
.res-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--c-white);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-sm);
}

.res-table thead th {
  background: var(--c-blue);
  color: #fff;
  text-align: left;
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .5px;
}

.res-table tbody td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--c-line);
  font-size: 14px;
}

.res-table tbody tr:hover {
  background: var(--c-surface);
}

.res-table tbody tr:last-child td {
  border-bottom: none;
}

.res-type {
  display: inline-block;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  font-weight: 600;
}

.res-type--手册 {
  background: #eaf1fb;
  color: var(--c-blue);
}

.res-type--笔记 {
  background: #fff1ea;
  color: var(--c-accent);
}

.res-type--证书 {
  background: #e7f7ee;
  color: #1f9254;
}

.res-download {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--c-blue-bright);
  font-weight: 600;
}

.res-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--sp-3);
}

.res-filter button {
  padding: 8px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--c-line);
  background: var(--c-white);
  color: var(--c-ink);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: .2s;
}

.res-filter button:hover {
  border-color: var(--c-blue-bright);
  color: var(--c-blue-bright);
}

.res-filter button.active {
  background: var(--c-blue);
  color: #fff;
  border-color: var(--c-blue);
}

/* ---------- 关于页 ---------- */
.about-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--c-line);
  margin-bottom: var(--sp-4);
  flex-wrap: wrap;
}

.about-tabs button {
  padding: 14px 22px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--c-muted);
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: .2s;
}

.about-tabs button:hover {
  color: var(--c-blue-bright);
}

.about-tabs button.active {
  color: var(--c-blue);
  border-bottom-color: var(--c-accent);
}

.tab-panel {
  display: none;
  animation: fade .3s ease;
}

.tab-panel.active {
  display: block;
}

@keyframes fade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

.about-intro {
  font-size: 16px;
  color: var(--c-ink);
  line-height: 1.9;
}

/* .about-intro .hl {
  color: var(--c-accent);
  font-weight: 700;
} */

/* 时间轴 */
.timeline {
  position: relative;
  margin: var(--sp-4) 0 0;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--c-line);
}

.timeline li {
  position: relative;
  margin-bottom: var(--sp-3);
}

.timeline li::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-accent);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--c-accent);
}

.timeline .tl-year {
  font-weight: 800;
  color: var(--c-blue);
  font-family: var(--font-num);
  font-size: 18px;
  margin-left: 15px;
}

.timeline .tl-text {
  color: var(--c-muted);
  margin-left: 15px;
}

/* 资质 */
.qual-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.qual-card {
  padding: var(--sp-3);
  text-align: center;
}

.qual-card .q-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto var(--sp-2);
  border-radius: 50%;
  background: #eaf1fb;
  color: var(--c-blue);
  display: grid;
  place-items: center;
}

.qual-card h4 {
  margin: 0 0 4px;
  font-size: 16px;
}

.qual-card p {
  margin: 0;
  font-size: 13px;
  color: var(--c-muted);
}

/* 新闻 */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.news-item {
  display: flex;
  gap: var(--sp-3);
  padding: var(--sp-3);
  align-items: flex-start;
}

.news-item .news-date {
  flex-shrink: 0;
  width: 78px;
  text-align: center;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  padding: 10px 0;
}

.news-item .news-date .d {
  font-size: 22px;
  font-weight: 800;
  color: var(--c-blue);
  font-family: var(--font-num);
  line-height: 1;
}

.news-item .news-date .m {
  font-size: 12px;
  color: var(--c-muted);
  margin-top: 4px;
}

.news-item h3 {
  font-size: 17px;
  margin: 0 0 6px;
}

.news-item p {
  margin: 0;
  color: var(--c-muted);
  font-size: 14px;
}

/* 联系我们 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

.contact-card {
  padding: var(--sp-4);
}

.contact-card h3 {
  font-size: 20px;
}

.contact-card .mail-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: var(--sp-2);
  padding: 12px 22px;
  background: var(--c-blue);
  color: #fff;
  border-radius: var(--r-pill);
  font-weight: 600;
}

.contact-card .mail-btn:hover {
  background: var(--c-blue-bright);
  color: #fff;
}

.contact-info {
  margin-top: var(--sp-2);
  font-size: 14px;
  color: var(--c-muted);
}

.contact-info p {
  margin: 6px 0;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  font-size: 13px;
  color: var(--c-muted);
  margin-bottom: var(--sp-3);
}

.breadcrumb a {
  color: var(--c-muted);
}

.breadcrumb a:hover {
  color: var(--c-blue-bright);
}

.breadcrumb span {
  margin: 0 6px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .market-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .detail-layout {
    grid-template-columns: 1fr;
  }

  .detail-figure {
    height: 280px;
  }

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

@media (max-width: 768px) {
  .m-hidden {
    display: none !important;
  }

  :root {
    --sp-6: 48px;
    --sp-7: 64px;
  }

  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    padding: var(--sp-2) var(--sp-3);
    transform: translateX(100%);
    transition: transform .3s ease;
    box-shadow: var(--sh-lg);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    padding: 16px 4px;
    border-bottom: 1px solid var(--c-line);
    font-size: 16px;
  }

  .nav-links a::after {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero .hero-sub {
    font-size: 16px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .cat-grid {
    grid-template-columns: 1fr;
  }

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

  .cta-grid {
    grid-template-columns: 1fr;
  }

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

  .cat-filter {
    position: static;
  }

  .cat-filter ul {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .cat-filter a {
    flex: 1 1 auto;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .qual-grid {
    grid-template-columns: 1fr;
  }

  .site-footer .foot-grid {
    grid-template-columns: 1fr 1fr;
  }

  .res-table thead {
    display: none;
  }

  .res-table tbody td {
    display: block;
    padding: 8px 14px;
    border: none;
  }

  .res-table tbody tr {
    display: block;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    margin-bottom: var(--sp-2);
    padding: 6px 0;
  }

  .res-table tbody td::before {
    content: attr(data-label);
    color: var(--c-muted);
    font-size: 12px;
    display: block;
  }

  .res-table tbody td:last-child {
    padding-bottom: 14px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--sp-2);
  }

  .stats {
    grid-template-columns: 1fr 1fr;
  }

  .market-grid {
    grid-template-columns: 1fr;
  }

  .site-footer .foot-grid {
    grid-template-columns: 1fr;
  }

  .news-item {
    flex-direction: column;
  }

  .inquiry-box {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* 375px 专项保护：禁止溢出 */
@media (max-width: 375px) {
  .hero h1 {
    font-size: 26px;
  }

  .stat .num {
    font-size: 26px;
  }

  .brand .brand-cn {
    font-size: 16px;
  }
}

/* ============================================================
 * 视觉增强 · 动画系统（纯 CSS，零外部依赖）
 * 统一动效令牌 + 滚动揭示 + 数字递增 + Hero 入场/指示
 * + 卡片/按钮微交互 + 导航吸顶 + 内容切换淡入
 * 全部尊重 prefers-reduced-motion
 * ============================================================ */

/* ---------- 动效令牌 ---------- */
:root {
  --anim-fast: .2s;
  --anim-base: .35s;
  --anim-slow: .7s;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

/* ---------- Hero 满幅 + 流动渐变 + 浮动光晕 ---------- */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: var(--sp-6) 0;
  background-size: 220% 220%;
  animation: heroFlow 20s ease-in-out infinite;
}

@keyframes heroFlow {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

.hero::before {
  animation: floatOrb1 16s ease-in-out infinite;
}

.hero::after {
  animation: floatOrb2 22s ease-in-out infinite;
}

@keyframes floatOrb1 {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(-34px, 40px);
  }
}

@keyframes floatOrb2 {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(40px, -30px);
  }
}

/* 粒子点光场（装饰层，纯 CSS） */
.hero-orbs {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .35;
  background-image: radial-gradient(circle, rgba(255, 255, 255, .55) 0 1.4px, transparent 1.8px);
  background-size: 130px 130px;
  animation: orbDrift 44s linear infinite;
}

@keyframes orbDrift {
  from {
    background-position: 0 0;
  }

  to {
    background-position: 130px 260px;
  }
}

/* ---------- Hero 标题放大 + 入场（依次淡入上移） ---------- */
.hero h1 {
  font-size: 52px;
  line-height: 1.14;
  letter-spacing: 1px;
  max-width: 760px;
  text-shadow: 0 2px 24px rgba(7, 22, 48, .25);
}

.hero-badge {
  animation: heroIn .7s var(--ease-out) both;
}

.hero h1 {
  animation: heroIn .85s var(--ease-out) .12s both;
}

.hero .hero-sub {
  animation: heroIn .85s var(--ease-out) .26s both;
}

.hero .hero-cta {
  animation: heroIn .85s var(--ease-out) .4s both;
}

@keyframes heroIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Hero 向下滚动指示 ---------- */
.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 3;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, .85);
  text-decoration: none;
  font-size: 11px;
  letter-spacing: 3px;
}

.hero-scroll:hover {
  color: #fff;
}

.hero-scroll svg {
  width: 22px;
  height: 22px;
  animation: scrollBob 1.8s ease-in-out infinite;
}

@keyframes scrollBob {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(7px);
  }
}

/* ---------- 滚动揭示 Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--anim-slow) var(--ease), transform var(--anim-slow) var(--ease);
  will-change: opacity, transform;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* 网格卡片错位入场（stagger，纯 CSS） */
.cat-grid .reveal:nth-child(2),
.market-grid .reveal:nth-child(2) {
  transition-delay: .08s;
}

.cat-grid .reveal:nth-child(3),
.market-grid .reveal:nth-child(3) {
  transition-delay: .16s;
}

.cat-grid .reveal:nth-child(4),
.market-grid .reveal:nth-child(4) {
  transition-delay: .24s;
}

.cat-grid .reveal:nth-child(5),
.market-grid .reveal:nth-child(5) {
  transition-delay: .32s;
}

.cat-grid .reveal:nth-child(6) {
  transition-delay: .4s;
}

/* ---------- 按钮光泽扫过 + 悬浮 ---------- */
.btn {
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -130%;
  width: 60%;
  height: 100%;
  background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, .45) 50%, transparent 100%);
  transform: skewX(-20deg);
  transition: left .6s var(--ease);
  pointer-events: none;
}

.btn:hover::after {
  left: 140%;
}

.btn--primary:hover {
  transform: translateY(-2px) scale(1.02);
}

.btn--light:hover {
  transform: translateY(-2px);
}

/* ---------- 卡片 hover 微交互（统一上浮 + 橙红描边） ---------- */
.card {
  transition: transform var(--anim-base) var(--ease), box-shadow var(--anim-base) var(--ease), border-color var(--anim-base) var(--ease);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-lg);
  border-color: var(--c-accent);
}

.cat-card {
  transition: transform var(--anim-base) var(--ease), box-shadow var(--anim-base) var(--ease), border-color var(--anim-base) var(--ease);
}

.cat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-lg);
  border-color: var(--c-accent);
}

.cat-card .cat-icon {
  transition: transform var(--anim-base) var(--ease);
}

.cat-card:hover .cat-icon {
  transform: translateY(-5px) scale(1.04);
}

/* 市场 / 核心优势卡片 hover：图标上浮 + 描边高亮 */
.market-item {
  border: 1px solid transparent;
  border-radius: var(--r-lg);
  transition: transform var(--anim-base) var(--ease), box-shadow var(--anim-base) var(--ease), background var(--anim-base) var(--ease), border-color var(--anim-base) var(--ease);
}

.market-item:hover {
  background: #fff;
  box-shadow: var(--sh-md);
  border-color: var(--c-line);
  transform: translateY(-4px);
}

.market-item .m-icon {
  transition: transform var(--anim-base) var(--ease), border-color var(--anim-base) var(--ease), color var(--anim-base) var(--ease);
}

.market-item:hover .m-icon {
  transform: translateY(-6px);
  border-color: var(--c-accent);
  color: var(--c-accent);
}

/* 资料 / 下载 / 新闻 hover */
.download-list a {
  transition: transform var(--anim-base) var(--ease), border-color var(--anim-base) var(--ease), box-shadow var(--anim-base) var(--ease), color var(--anim-base) var(--ease);
}

.download-list a:hover {
  transform: translateY(-3px);
  border-color: var(--c-accent);
}

.news-item {
  transition: transform var(--anim-base) var(--ease), box-shadow var(--anim-base) var(--ease);
}

.news-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-md);
}

.res-table tbody tr {
  transition: background var(--anim-fast) var(--ease), transform var(--anim-base) var(--ease);
}

.res-table tbody tr:hover {
  transform: translateX(3px);
}

/* ---------- 导航吸顶 scrolled ---------- */
.site-header.scrolled {
  box-shadow: var(--sh-md);
  background: rgba(255, 255, 255, .9);
}

.nav-toggle {
  transition: transform var(--anim-fast) var(--ease);
}

/* ---------- 内容切换淡入（筛选 / Tab 重渲染） ---------- */
.swap-fade {
  animation: swapFade var(--anim-base) var(--ease);
}

@keyframes swapFade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 产品图：虚幻渐变流动 + 光斑漂移 ---------- */
@keyframes etherealShift {
  0%,
  100% {
    background-position: 50% 50%, 100% 100%, 100% 0%, 0% 100%, 0 0;
  }

  50% {
    background-position: 44% 42%, 88% 90%, 92% 8%, 6% 92%, 0 0;
  }
}

@keyframes spotDrift {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(60px, 120px, 0);
  }
}

/* 计数器数字等宽，避免跳动 */
.num[data-count] {
  font-variant-numeric: tabular-nums;
}

/* ---------- 响应式：移动端微调 Hero 高度，避免溢出 ---------- */
@media (max-width: 768px) {
  .hero {
    min-height: 82vh;
  }

  .hero .container {
    grid-template-columns: 1fr;
    gap: var(--sp-4);
    text-align: center;
  }

  .hero-text {
    max-width: 640px;
    margin: 0 auto;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-visual {
    margin-top: var(--sp-2);
  }

  .hero-float {
    max-width: 340px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-scroll {
    bottom: 16px;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: 78vh;
  }
}

/* ---------- 可访问性：尊重 prefers-reduced-motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 0;
    transform: none;
    transition: opacity var(--anim-fast) linear;
  }

  .reveal.in {
    opacity: 1;
    transform: none;
  }

  .hero {
    min-height: auto;
    animation: none;
  }

  .hero h1 {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .hero-badge,
  .hero .hero-sub,
  .hero .hero-cta {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .hero::before,
  .hero::after,
  .hero-orbs,
  .hero-visual,
  .hero-float {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .hero-scroll svg {
    animation: none;
  }

  .btn::after {
    display: none;
  }

  .swap-fade {
    animation: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}