/* =========================================================
   汇智能源 HuiNeng Energy — 企业官网共享样式
   设计风格：简约大气 · 专业沉稳
   配色：深蓝主色 + 青绿点缀 + 中性灰
   ========================================================= */

:root {
  --c-navy: #0a3d7c;          /* 与品牌 Logo 同色系 */
  --c-navy-2: #0f4a92;
  --c-blue: #1e6dd8;          /* 宣传册主蓝 */
  --c-teal: #14a39a;
  --c-teal-light: #2ec4b8;
  --c-bg: #ffffff;
  --c-bg-soft: #f5f8fb;
  --c-bg-slate: #eef3f8;
  --c-text: #1f2d3d;
  --c-text-soft: #5a6b7b;
  --c-border: #e2e9f0;
  --c-gold: #c9a35b;
  --shadow-sm: 0 2px 10px rgba(11, 36, 64, 0.06);
  --shadow-md: 0 10px 30px rgba(11, 36, 64, 0.10);
  --shadow-lg: 0 20px 50px rgba(11, 36, 64, 0.14);
  --radius: 12px;
  --radius-lg: 20px;
  --maxw: 1200px;
  --header-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: all .28s ease;
  cursor: pointer;
  border: 1.5px solid transparent;
}
.btn-primary {
  background: var(--c-teal);
  color: #fff;
  box-shadow: 0 8px 22px rgba(26, 163, 154, .32);
}
.btn-primary:hover {
  background: var(--c-teal-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(26, 163, 154, .42);
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.55);
}
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color:#fff; }
.btn-outline {
  background: transparent;
  color: var(--c-navy);
  border-color: var(--c-border);
}
.btn-outline:hover { border-color: var(--c-teal); color: var(--c-teal); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-border);
  transition: all .3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,.96);
  box-shadow: var(--shadow-sm);
}
.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 18px;
  color: var(--c-navy);
  letter-spacing: .5px;
}
.brand .logo {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: grid; place-items: center;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 8px rgba(10, 61, 124, .12);
}
.brand .logo img { width: 100%; height: 100%; object-fit: contain; }
.brand .name { display: flex; flex-direction: column; line-height: 1.1; }
.brand .name .nm { font-size: 18px; font-weight: 800; color: var(--c-navy); }
.brand .name .sub { font-size: 11px; font-weight: 500; color: var(--c-text-soft); letter-spacing: 2px; margin-top: 3px; }

/* Footer 品牌（白色字） */
.footer-brand .brand .name .nm { color: #fff; }
.footer-brand .brand .name .sub { color: #9fb3c4; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text);
  padding: 6px 0;
  transition: color .2s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--c-teal);
  transition: width .28s ease;
}
.nav-links a:hover,
.nav-links a.active { color: var(--c-teal); }
.nav-links a.active::after,
.nav-links a:hover::after { width: 100%; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span { width: 26px; height: 2px; background: var(--c-navy); transition: .3s; }

/* ---------- 区块通用 ---------- */
.section { padding: 96px 0; }
.section-soft { background: var(--c-bg-soft); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.section-head .eyebrow {
  display: inline-block;
  color: var(--c-teal);
  font-weight: 700;
  letter-spacing: 3px;
  font-size: 13px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--c-navy);
  letter-spacing: 1px;
  line-height: 1.3;
}
.section-head p {
  margin-top: 16px;
  color: var(--c-text-soft);
  font-size: 16px;
}
.section-head h2 { position: relative; }
.section-head h2::after {
  content: "";
  display: block;
  width: 56px; height: 4px; border-radius: 2px;
  margin: 18px auto 0;
  background: linear-gradient(90deg, var(--c-teal), var(--c-blue));
}

/* ---------- 首页 Hero ---------- */
/* ---------- 首页/内页 Hero（含行业 banner 背景） ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  background-color: #0b2440;
  background-image: var(--hero-image);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
/* 细网格纹理，增加专业质感 */
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(720px 520px at 72% 28%, #000, transparent 78%);
  -webkit-mask-image: radial-gradient(720px 520px at 72% 28%, #000, transparent 78%);
  opacity: .5;
  z-index: 1;
}
/* 深色叠加层，保证文字清晰可读 */
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(115deg, rgba(7,26,50,.90) 0%, rgba(9,36,60,.66) 40%, rgba(13,54,74,.42) 100%),
    linear-gradient(to top, rgba(7,22,44,.80) 0%, rgba(7,22,44,0) 36%);
  z-index: 1;
}
.hero .container { position: relative; z-index: 2; }
.hero-content { max-width: 660px; }
.hero .tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px;
  border: 1px solid rgba(255,255,255,.30);
  border-radius: 999px;
  font-size: 13px; letter-spacing: 1px;
  margin-bottom: 26px;
  color: #d9f1ec;
  background: rgba(255,255,255,.07);
  backdrop-filter: blur(4px);
}
.hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 1px;
  margin-bottom: 22px;
}
.hero h1 .accent { color: var(--c-teal-light); }
.hero p.lead {
  font-size: 18px;
  color: #e6eef5;
  margin-bottom: 38px;
  max-width: 560px;
  text-shadow: 0 1px 14px rgba(0,0,0,.28);
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  position: relative; z-index: 2;
  display: flex; gap: 48px; flex-wrap: wrap;
  margin-top: 70px;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,.16);
}
.hero-stats .stat .num {
  font-size: 38px; font-weight: 800; color: #fff;
}
.hero-stats .stat .num span { color: var(--c-teal-light); }
.hero-stats .stat .label { font-size: 14px; color: #bccad8; }

/* 向下滚动提示（仅首页） */
.hero-scroll {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(255,255,255,.78); font-size: 11px; letter-spacing: 3px;
}
.hero-scroll .mouse {
  width: 24px; height: 40px; border: 2px solid rgba(255,255,255,.6);
  border-radius: 14px; position: relative;
}
.hero-scroll .mouse::after {
  content: ""; position: absolute; top: 7px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 8px; border-radius: 3px; background: #fff;
  animation: scrollDot 1.7s infinite;
}
@keyframes scrollDot {
  0% { opacity: 0; transform: translate(-50%, 0); }
  35% { opacity: 1; }
  75% { opacity: 0; transform: translate(-50%, 13px); }
  100% { opacity: 0; }
}

/* 各页面 banner 图（后台「站点设置」可覆盖） */
body[data-page="home"]        { --hero-image: url("../assets/banners/banner_home.jpg"); }
body[data-page="about"]       { --hero-image: url("../assets/banners/banner_about.jpg"); }
body[data-page="services"]    { --hero-image: url("../assets/banners/banner_services.jpg"); }
body[data-page="contact"]     { --hero-image: url("../assets/banners/banner_contact.jpg"); }
body[data-page="news"]        { --hero-image: url("../assets/banners/banner_news.jpg"); }
body[data-page="news-detail"] { --hero-image: url("../assets/banners/banner_news.jpg"); }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 28px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.card .icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--c-bg-slate);
  display: grid; place-items: center;
  margin-bottom: 20px;
  font-size: 26px;
  color: var(--c-teal);
}
.card h3 { font-size: 20px; color: var(--c-navy); margin-bottom: 12px; }
.card p { color: var(--c-text-soft); font-size: 15px; }

/* ---------- 关于 / 数据条 ---------- */
.about-split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-visual {
  position: relative;
  border-radius: var(--radius-lg);
  min-height: 420px;
  background: linear-gradient(135deg, #0b2440, #1aa39a);
  overflow: hidden;
  display: grid; place-items: center;
  color: #fff;
}
.about-visual .ring {
  position: absolute; border: 2px solid rgba(255,255,255,.18);
  border-radius: 50%;
}
.about-visual .ring.r1 { width: 320px; height: 320px; }
.about-visual .ring.r2 { width: 440px; height: 440px; }
.about-visual .ring.r3 { width: 560px; height: 560px; }
.about-visual .core {
  position: relative; z-index: 2;
  text-align: center;
}
.about-visual .core .big { font-size: 60px; font-weight: 800; line-height: 1; }
.about-visual .core .sub { letter-spacing: 4px; opacity: .8; margin-top: 10px; }
.about-text h2 { font-size: 34px; color: var(--c-navy); font-weight: 800; margin-bottom: 20px; }
.about-text p { color: var(--c-text-soft); margin-bottom: 16px; }
.about-text .hl { color: var(--c-teal); font-weight: 700; }

.metric-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; margin-top: 8px; }
.metric {
  text-align: center;
  padding: 30px 16px;
  background: var(--c-navy);
  color: #fff;
  border-radius: var(--radius);
}
.metric .num { font-size: 40px; font-weight: 800; color: var(--c-teal-light); }
.metric .label { font-size: 14px; color: #c4d2de; margin-top: 6px; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.step {
  position: relative;
  padding: 30px 24px;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.step .idx {
  font-size: 15px; font-weight: 800; color: var(--c-teal);
  width: 38px; height: 38px; border-radius: 50%;
  border: 2px solid var(--c-teal); display: grid; place-items: center;
  margin-bottom: 16px;
}
.step h4 { color: var(--c-navy); font-size: 17px; margin-bottom: 8px; }
.step p { color: var(--c-text-soft); font-size: 14px; }

/* ---------- 时间线（发展历程） ---------- */
.timeline { position: relative; max-width: 820px; margin: 0 auto; }
.timeline::before {
  content: ""; position: absolute; left: 22px; top: 8px; bottom: 8px;
  width: 2px; background: var(--c-border);
}
.tl-item { position: relative; padding: 0 0 38px 64px; }
.tl-item .dot {
  position: absolute; left: 14px; top: 4px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--c-teal); border: 4px solid #fff;
  box-shadow: 0 0 0 2px var(--c-teal);
}
.tl-item .yr { font-weight: 800; color: var(--c-navy); font-size: 18px; }
.tl-item h4 { color: var(--c-navy); margin: 4px 0 6px; }
.tl-item p { color: var(--c-text-soft); font-size: 15px; }

/* ---------- 资质荣誉 ---------- */
.badges { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.badge {
  padding: 12px 26px;
  background: #fff; border: 1px solid var(--c-border);
  border-radius: 999px; font-weight: 600; color: var(--c-navy);
  font-size: 14px;
  transition: all .25s;
}
.badge:hover { border-color: var(--c-teal); color: var(--c-teal); transform: translateY(-3px); }

/* ---------- 服务页详情 ---------- */
.service-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  overflow: hidden; margin-bottom: 28px; background:#fff;
}
.service-block .visual {
  background: linear-gradient(135deg, var(--c-navy), var(--c-blue));
  color: #fff; padding: 56px 44px;
  display: flex; flex-direction: column; justify-content: center;
}
.service-block .visual .ic { font-size: 42px; margin-bottom: 18px; }
.service-block .visual h3 { font-size: 26px; margin-bottom: 12px; }
.service-block .visual p { color: #cfe0ec; }
.service-block .body { padding: 48px 44px; }
.service-block .body h4 { color: var(--c-navy); font-size: 18px; margin-bottom: 14px; }
.service-block .body ul li {
  position: relative; padding-left: 24px; margin-bottom: 10px;
  color: var(--c-text-soft); font-size: 15px;
}
.service-block .body ul li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--c-teal); font-weight: 800;
}
.service-block .body .more-hint {
  margin-top: 16px;
  color: var(--c-teal);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 3px;
}

/* ---------- 联系页 ---------- */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; }
.contact-info { background: var(--c-navy); color: #fff; border-radius: var(--radius-lg); padding: 48px 42px; }
.contact-info h3 { font-size: 24px; margin-bottom: 26px; }
.contact-info .ci-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-info .ci-item .ic {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  background: rgba(255,255,255,.1); display: grid; place-items: center; font-size: 20px;
}
.contact-info .ci-item .t { font-size: 13px; color: #9fb3c4; }
.contact-info .ci-item .v { font-size: 16px; font-weight: 600; }
.contact-form { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg); padding: 44px 40px; }
.contact-form h3 { color: var(--c-navy); font-size: 22px; margin-bottom: 8px; }
.contact-form .hint { color: var(--c-text-soft); font-size: 14px; margin-bottom: 26px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--c-navy); margin-bottom: 8px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 13px 16px; font-size: 15px;
  border: 1.5px solid var(--c-border); border-radius: 10px;
  font-family: inherit; color: var(--c-text); background: var(--c-bg-soft);
  transition: border-color .2s, background .2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--c-teal); background: #fff;
}
.field textarea { resize: vertical; min-height: 120px; }
.field .err { color: #d9534f; font-size: 13px; margin-top: 6px; display: none; }
.field.invalid .err { display: block; }
.field.invalid input, .field.invalid textarea { border-color: #d9534f; }
.form-note { font-size: 13px; color: var(--c-text-soft); margin-top: 6px; }
.form-success {
  display: none; text-align: center; padding: 30px 10px;
  background: #eafaf6; border: 1px solid #b9ecdf; border-radius: var(--radius);
  color: #0f7a6c; margin-top: 14px;
}
.form-success.show { display: block; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--c-navy);
  color: #c8d6e2;
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .brand { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: #9fb3c4; max-width: 320px; }
.footer-col h5 { color: #fff; font-size: 15px; margin-bottom: 18px; letter-spacing: 1px; }
.footer-col a { display: block; font-size: 14px; color: #9fb3c4; margin-bottom: 12px; transition: color .2s; }
.footer-col a:hover { color: var(--c-teal-light); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; font-size: 13px; color: #8298aa; flex-wrap: wrap; gap: 10px;
}

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed; right: 26px; bottom: 26px;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--c-teal); color: #fff; font-size: 20px;
  display: grid; place-items: center; cursor: pointer;
  box-shadow: var(--shadow-md); opacity: 0; pointer-events: none;
  transform: translateY(10px); transition: all .3s ease; z-index: 900;
}
.to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.to-top:hover { background: var(--c-teal-light); }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 业务体系（首页七大业务） ---------- */
.biz {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
}
.biz .b {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 30px 24px; transition: all .3s ease; position: relative; overflow: hidden;
}
.biz .b::before {
  content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--c-blue), var(--c-teal));
  transform: scaleX(0); transform-origin: left; transition: transform .4s ease;
}
.biz .b:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.biz .b:hover::before { transform: scaleX(1); }
.biz .b .no {
  font-size: 13px; font-weight: 800; color: var(--c-blue); letter-spacing: 2px;
  margin-bottom: 12px;
}
.biz .b h4 { color: var(--c-navy); font-size: 18px; margin-bottom: 10px; }
.biz .b p { color: var(--c-text-soft); font-size: 14px; }

/* ---------- 客户展示 ---------- */
.customers {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.customer {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 22px 18px; text-align: center; font-weight: 600; color: var(--c-navy);
  transition: all .25s ease; font-size: 15px;
}
.customer:hover { border-color: var(--c-blue); color: var(--c-blue); transform: translateY(-3px); box-shadow: var(--shadow-sm); }

/* ---------- 合作模式 ---------- */
.models { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.model {
  background: linear-gradient(160deg, #f5fafd 0%, #eaf3fb 100%);
  border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 26px 20px; text-align: center; transition: all .3s;
}
.model:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.model .ic { font-size: 32px; margin-bottom: 10px; }
.model h4 { color: var(--c-navy); font-size: 16px; margin-bottom: 6px; }
.model p { color: var(--c-text-soft); font-size: 13px; }

/* ---------- 优势（带数字角标） ---------- */
.adv { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.adv .a {
  background: linear-gradient(160deg, #fff 0%, #f5f9fd 100%);
  border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 34px 26px; position: relative; transition: all .3s;
}
.adv .a:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--c-blue); }
.adv .a .big {
  font-size: 36px; font-weight: 800; color: var(--c-blue);
  line-height: 1; margin-bottom: 6px;
}
.adv .a .lab { color: var(--c-navy); font-weight: 700; font-size: 15px; margin-bottom: 12px; }
.adv .a .desc { color: var(--c-text-soft); font-size: 14px; }

/* ---------- 团队架构 ---------- */
.team {
  display: grid; grid-template-columns: 1fr 1.3fr; gap: 36px; align-items: start;
}
.team .box {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 30px 28px;
}
.team .box h4 { color: var(--c-navy); font-size: 18px; margin-bottom: 18px; }
.team .depts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.team .depts span {
  background: var(--c-bg-slate); color: var(--c-navy); border-radius: 8px;
  padding: 10px 14px; font-size: 14px; font-weight: 600; text-align: center;
}
.team .stats { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; margin-top: 20px; }
.team .stats .s {
  background: var(--c-navy); color: #fff; border-radius: 10px; padding: 18px;
  text-align: center;
}
.team .stats .s b { font-size: 26px; color: var(--c-teal-light); display: block; }
.team .stats .s small { color: #c4d2de; font-size: 13px; }

/* ---------- 资讯列表 ---------- */
.news-wrap { display: grid; grid-template-columns: 2fr 1fr; gap: 36px; }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.news-card {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  overflow: hidden; transition: all .3s ease; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.news-card .cover { height: 170px; background: linear-gradient(135deg, var(--c-navy), var(--c-blue)); position: relative; }
.news-card .cover .cat {
  position: absolute; top: 14px; left: 14px;
  background: rgba(255,255,255,.92); color: var(--c-navy);
  padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 700;
}
.news-card .body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.news-card .body .meta { color: var(--c-text-soft); font-size: 13px; margin-bottom: 10px; }
.news-card .body h3 { color: var(--c-navy); font-size: 17px; line-height: 1.5; margin-bottom: 10px; }
.news-card .body h3 a:hover { color: var(--c-blue); }
.news-card .body p { color: var(--c-text-soft); font-size: 14px; flex: 1; }
.news-card .body .more { margin-top: 14px; color: var(--c-blue); font-weight: 600; font-size: 14px; }
.news-side h4 { color: var(--c-navy); font-size: 17px; margin-bottom: 14px; }
.cat-list { display: flex; flex-direction: column; gap: 6px; }
.cat-list a {
  padding: 10px 14px; border-radius: 8px; color: var(--c-text-soft);
  font-size: 14px; transition: all .2s;
}
.cat-list a:hover, .cat-list a.active { background: var(--c-bg-slate); color: var(--c-blue); font-weight: 600; }
.cat-list a .cnt {
  float: right; font-size: 12px; color: var(--c-text-mute);
  background: rgba(26,163,154,.12); border-radius: 999px; padding: 1px 9px; font-weight: 600;
}
.cat-list a.active .cnt { color: var(--c-teal); background: rgba(26,163,154,.18); }
.pager { margin-top: 36px; display: flex; gap: 8px; justify-content: center; }
.pager button {
  width: 38px; height: 38px; border-radius: 8px; border: 1px solid var(--c-border);
  background: #fff; color: var(--c-text); font-weight: 600; cursor: pointer; transition: all .2s;
}
.pager button:hover:not(:disabled) { border-color: var(--c-blue); color: var(--c-blue); }
.pager button.active { background: var(--c-blue); color: #fff; border-color: var(--c-blue); }
.pager button:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 资讯详情 ---------- */
.article { max-width: 860px; margin: 0 auto; }
.article .head { text-align: center; margin-bottom: 36px; }
.article .head .cat { display: inline-block; color: var(--c-blue); font-weight: 700; font-size: 13px; letter-spacing: 2px; }
.article .head h1 { color: var(--c-navy); font-size: 32px; line-height: 1.4; margin: 14px 0 18px; }
.article .head .meta { color: var(--c-text-soft); font-size: 14px; }
.article .head .meta span { margin: 0 10px; }
.article .body { font-size: 16px; color: var(--c-text); line-height: 1.9; }
.article .body h2, .article .body h3 { color: var(--c-navy); margin: 30px 0 14px; }
.article .body h2 { font-size: 22px; }
.article .body h3 { font-size: 18px; }
.article .body p { margin-bottom: 16px; }
.article .body ul, .article .body ol { margin: 12px 0 18px 24px; }
.article .body li { margin-bottom: 6px; }
.article .body a { color: var(--c-blue); }
.article .body blockquote { border-left: 4px solid var(--c-blue); padding: 10px 18px; color: var(--c-text-soft); margin: 18px 0; background: var(--c-bg-soft); border-radius: 0 8px 8px 0; }
.article .back { margin-top: 50px; text-align: center; }

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2,1fr); }
  .metric-row { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-split { grid-template-columns: 1fr; gap: 40px; }
  .service-block { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; }
  .biz { grid-template-columns: repeat(2, 1fr); }
  .customers { grid-template-columns: repeat(3, 1fr); }
  .models { grid-template-columns: repeat(3, 1fr); }
  .adv { grid-template-columns: repeat(2, 1fr); }
  .team { grid-template-columns: 1fr; }
  .news-wrap { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-links {
    position: fixed; top: var(--header-h); right: 0;
    width: 70%; max-width: 300px; height: calc(100vh - var(--header-h));
    background: #fff; flex-direction: column; align-items: flex-start;
    padding: 30px; gap: 22px;
    box-shadow: var(--shadow-lg);
    transform: translateX(110%); transition: transform .35s ease;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: flex; }
  .hero h1 { font-size: 38px; }
  .section-head h2 { font-size: 28px; }
  .grid-3, .grid-4, .grid-2, .steps, .metric-row, .footer-grid { grid-template-columns: 1fr; }
  .biz, .customers, .models, .adv { grid-template-columns: 1fr 1fr; }
  .section { padding: 68px 0; }
  .team .depts { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .biz, .customers, .models, .adv { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
}

/* =========================================================
   全局字号缩小一号（应需求：所有文字整体缩小一档）
   ========================================================= */
body { font-size: 15px; line-height: 1.72; }
.site-header { --header-h: 66px; }
.brand { font-size: 17px; }
.brand .name .nm { font-size: 17px; }
.brand .name .sub { font-size: 10.5px; letter-spacing: 1.5px; }
.nav-links { gap: 30px; }
.nav-links a { font-size: 14px; }
.btn { font-size: 14px; padding: 12px 26px; }
.hero h1 { font-size: 46px; }
.hero p.lead { font-size: 16.5px; }
.hero .tag { font-size: 12.5px; }
.hero-stats .stat .num { font-size: 34px; }
.hero-stats .stat .label { font-size: 13px; }
.section { padding: 84px 0; }
.section-head .eyebrow { font-size: 12.5px; }
.section-head h2 { font-size: 33px; }
.section-head p { font-size: 15px; }
.card { padding: 30px 26px; }
.card h3 { font-size: 19px; }
.card p { font-size: 14px; }
.about-visual .core .big { font-size: 54px; }
.about-text h2 { font-size: 31px; }
.metric .num { font-size: 36px; }
.metric .label { font-size: 13px; }
.step h4 { font-size: 16px; }
.step p { font-size: 13.5px; }
.tl-item .yr { font-size: 17px; }
.tl-item p { font-size: 14px; }
.badge { font-size: 13px; padding: 11px 22px; }
.service-block .visual h3 { font-size: 24px; }
.service-block .body h4 { font-size: 17px; }
.service-block .body ul li { font-size: 14px; }
.contact-info h3 { font-size: 22px; }
.contact-info .ci-item .v { font-size: 15px; }
.contact-form h3 { font-size: 20px; }
.contact-form .hint { font-size: 13px; }
.field label { font-size: 13px; }
.field input, .field textarea, .field select { font-size: 14px; }
.footer-col h5 { font-size: 14px; }
.footer-col a { font-size: 13px; }
.footer-brand p { font-size: 13px; }
.footer-bottom { font-size: 12.5px; }
.biz .b h4 { font-size: 17px; }
.biz .b p { font-size: 13px; }
.customer { font-size: 14px; }
.model h4 { font-size: 15px; }
.model p { font-size: 12.5px; }
.adv .a .big { font-size: 33px; }
.adv .a .lab { font-size: 14px; }
.adv .a .desc { font-size: 13px; }
.team .box h4 { font-size: 17px; }
.team .depts span { font-size: 13px; }
.team .stats .s b { font-size: 24px; }
.team .stats .s small { font-size: 12px; }
.news-card .body h3 { font-size: 16px; }
.news-card .body p { font-size: 13px; }
.news-side h4 { font-size: 16px; }
.cat-list a { font-size: 13px; }
.article .head h1 { font-size: 30px; }
.article .body { font-size: 15px; }
.article .body h2 { font-size: 21px; }
.article .body h3 { font-size: 17px; }

/* 语言切换按钮（右上角） */
.lang-toggle {
  display: inline-flex; align-items: center; gap: 3px;
  margin-left: 14px; padding: 6px 14px;
  border-radius: 999px; border: 1.5px solid var(--c-border);
  background: #fff; color: var(--c-navy);
  font-weight: 700; font-size: 13px; cursor: pointer;
  font-family: inherit; transition: all .2s;
}
.lang-toggle:hover { border-color: var(--c-teal); color: var(--c-teal); }
.lang-toggle .sep { color: var(--c-text-soft); font-weight: 400; margin: 0 1px; }
.lang-toggle .on { color: var(--c-teal); }

@media (max-width: 720px) {
  .lang-toggle { margin-left: 0; }
  .hero h1 { font-size: 34px; }
  .section-head h2 { font-size: 26px; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 30px; }
}