/* ==========================================================
   易电云商官网复刻 — 基础样式 (styles.css)
   ========================================================== */
:root{
  --blue:#1266e0;
  --blue-d:#0d4fb0;
  --blue-l:#eaf2fe;
  --green:#3aa655;
  --yellow:#f2b705;
  --orange:#f08a24;
  --gray:#6b7280;
  --ink:#222933;
  --line:#e8edf4;
  --bg-soft:#f5f7fa;
  --shadow:0 6px 18px rgba(16,35,66,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:#fff;font-size:15px;line-height:1.7;
}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
button{font-family:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

/* ---------- 页面切换 ---------- */
.page{display:none}
.page.active{display:block}
.section{padding:64px 0}
.section.alt{background:var(--bg-soft)}

/* ---------- 板块标题 ---------- */
.sec-head{text-align:center;margin-bottom:42px}
.sec-head h2{font-size:30px;font-weight:700;letter-spacing:2px;color:var(--ink)}
.sec-head .en{margin-top:8px;color:#9aa5b5;font-size:13px;letter-spacing:3px;text-transform:uppercase}
.sec-head .sub{margin-top:6px;color:#9aa5b5;font-size:14px;letter-spacing:2px}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 1px 10px rgba(16,35,66,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;cursor:pointer;user-select:none}
.logo .mark{
  width:44px;height:44px;border-radius:10px;color:#fff;
  background:linear-gradient(135deg,#1266e0,#0d4fb0);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 10px rgba(18,102,224,.35);
}
.logo .mark svg{width:24px;height:24px}
.logo .txt{display:flex;flex-direction:column;line-height:1.2}
.logo .txt b{font-size:21px;letter-spacing:3px;color:var(--ink)}
.logo .txt small{font-size:10px;letter-spacing:2.5px;color:#9aa5b5}
.main-nav{display:flex;gap:6px}
.main-nav > a{
  position:relative;padding:26px 22px;font-size:16px;color:#3a4353;cursor:pointer;transition:color .2s;
}
.main-nav > a:hover{color:var(--blue)}
.main-nav > a.active{color:var(--blue);font-weight:600}
.main-nav > a.active::after{
  content:"";position:absolute;left:22px;right:22px;bottom:16px;
  height:3px;border-radius:2px;background:var(--blue);
}

/* 新增：清除下拉菜单a默认下划线，重置样式 */
.dropdown-menu a {
  position: static !important;
  text-decoration: none; /* 清除文字下划线 */
  padding:8px 16px;
  display:block;
  color:#3a4353;
}
.dropdown-menu a:hover{
  color:var(--blue);
}
.dropdown-menu a::after{
  display:none !important; /* 禁用下拉项的底部横线伪元素 */
}
/* ---------- 首屏 Banner ---------- */
.banner{
  position:relative;color:#fff;overflow:hidden;
  background:linear-gradient(115deg,#081f45 0%,#0b3379 48%,#1266e0 100%);
}
.banner::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:46px 46px;
  -webkit-mask-image:radial-gradient(90% 90% at 75% 25%,#000 30%,transparent 100%);
  mask-image:radial-gradient(90% 90% at 75% 25%,#000 30%,transparent 100%);
}
.banner::after{
  content:"";position:absolute;right:-140px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(64,156,255,.4),transparent 65%);
}
.banner .deco{position:absolute;right:5%;bottom:-30px;width:280px;height:280px;opacity:.14;z-index:1}
.banner .container{position:relative;z-index:2;padding-top:88px;padding-bottom:88px}
.banner h1{font-size:42px;letter-spacing:4px;font-weight:700;line-height:1.4}
.banner .sub2{margin-top:12px;font-size:22px;font-weight:400;letter-spacing:8px;color:rgba(255,255,255,.85)}
.banner.center .container{text-align:center}
.banner .lead{
  margin-top:24px;max-width:780px;color:rgba(255,255,255,.85);
  font-size:15px;line-height:2.1;text-align:justify;
}
.btn-more{
  display:inline-flex;align-items:center;gap:8px;margin-top:32px;
  padding:12px 36px;border-radius:999px;cursor:pointer;
  background:var(--blue);color:#fff;font-size:14px;letter-spacing:3px;font-weight:600;
  border:1px solid rgba(255,255,255,.4);
  box-shadow:0 8px 20px rgba(4,20,50,.4);
  transition:background .2s;
}
.btn-more:hover{background:var(--blue-d)}
/* banner 数据栏（服务页） */
.banner-stats{display:flex;gap:18px;margin-top:38px;flex-wrap:wrap}
.banner-stats .bs{
  min-width:172px;padding:16px 28px;border-radius:12px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);
  backdrop-filter:blur(3px);
}
.banner-stats .num{font-size:30px;font-weight:700;line-height:1.3}
.banner-stats .num small{font-size:15px;font-weight:400;margin-left:3px}
.banner-stats .lab{color:rgba(255,255,255,.82);font-size:13px;margin-top:2px;letter-spacing:1px}

/* ---------- 核心数据栏 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:56px}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  text-align:center;padding:30px 16px;box-shadow:var(--shadow);
}
.stat .ic{
  width:54px;height:54px;margin:0 auto 16px;border-radius:50%;
  background:var(--blue-l);color:var(--blue);
  display:flex;align-items:center;justify-content:center;
}
.stat .ic svg{width:26px;height:26px}
.stat .num{font-size:36px;font-weight:700;color:var(--blue);line-height:1.2}
.stat .lab{margin-top:8px;color:#5b6472;font-size:14px;letter-spacing:1px}

/* ---------- 能力卡片 ---------- */
.caps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cap{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:32px 22px;text-align:center;box-shadow:var(--shadow);
  transition:transform .25s,box-shadow .25s;
}
.cap:hover{transform:translateY(-5px);box-shadow:0 14px 28px rgba(16,35,66,.12)}
.cap .ic{
  width:60px;height:60px;margin:0 auto 18px;border-radius:14px;color:#fff;
  background:linear-gradient(135deg,#1266e0,#3d86f5);
  display:flex;align-items:center;justify-content:center;
}
.cap .ic svg{width:30px;height:30px}
.cap h3{font-size:18px;margin-bottom:10px;letter-spacing:1px}
.cap p{color:#7a828f;font-size:13px;line-height:1.9}

/* ---------- 全国服务覆盖 ---------- */
.cover{display:grid;grid-template-columns:1fr 1.2fr;gap:44px;align-items:center}
.cover h3{font-size:18px;color:var(--blue);margin-bottom:6px;letter-spacing:1px}
.cover .prov{color:#5b6472;font-size:13px;line-height:2.1;margin-bottom:20px}
.cover .dept{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;margin-bottom:12px}
.cover .dept i{width:9px;height:9px;border-radius:50%;background:var(--blue)}
.cnmap{width:100%;height:auto;display:block}
.map-legend{display:flex;gap:22px;justify-content:center;margin-top:12px;font-size:12px;color:var(--gray)}
.map-legend i{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:6px;vertical-align:-1px}

/* ---------- 服务能力参数 ---------- */
.params{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.param{padding:36px 22px;border-right:1px solid var(--line)}
.param:last-child{border-right:none}
.param h3{font-size:17px;margin-bottom:16px;position:relative;padding-bottom:10px;letter-spacing:1px}
.param h3::after{
  content:"";position:absolute;left:0;bottom:0;width:34px;height:3px;border-radius:2px;background:var(--blue);
}
.param p{color:var(--gray);font-size:13.5px;line-height:2.1}

/* ---------- 合作伙伴 ---------- */
.partners{display:flex;flex-wrap:wrap;justify-content:center;gap:22px}
.partner{
  min-width:172px;padding:28px 18px;text-align:center;
  border:1px solid #e8ecf2;border-radius:10px;background:#fff;
  color:#8a93a3;font-size:17px;font-weight:700;letter-spacing:2px;
  filter:grayscale(1);opacity:.85;transition:.2s;
}
.partner:hover{opacity:1;color:var(--blue);filter:none}

/* ---------- 易电资讯（列表） ---------- */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{
  display:flex;align-items:center;gap:20px;
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:14px;transition:box-shadow .2s;
}
.news-item:hover{box-shadow:0 10px 22px rgba(16,35,66,.09)}
.news-thumb{
  width:152px;height:96px;border-radius:8px;flex:none;
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.92);
}
.news-thumb svg{width:40px;height:40px}
.news-item .t{font-size:16px;font-weight:600;line-height:1.7;flex:1;color:#2a3342}
.news-item .d{color:#9aa5b5;font-size:13px;flex:none}

/* ---------- 分页 ---------- */
.pager{display:flex;gap:8px;justify-content:center;margin-top:36px;flex-wrap:wrap}
.pager button{
  min-width:38px;height:38px;padding:0 14px;
  border:1px solid #dfe4ec;background:#fff;border-radius:6px;
  color:#4a5364;font-size:13px;cursor:pointer;transition:.15s;
}
.pager button:hover,.pager button.active{background:var(--blue);border-color:var(--blue);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#14171c;color:#9aa3b2;font-size:13px}
.footer-top{
  display:flex;justify-content:space-between;align-items:center;
  gap:30px;padding:46px 0;flex-wrap:wrap;
}
.footer-addr p{margin-bottom:9px;letter-spacing:.5px}
.qr{
  width:112px;height:112px;background:#fff;border-radius:6px;
  padding:8px;flex:none;border:1px solid #2a2f38;
}
.qr svg{display:block;width:100%;height:100%}
.footer-copy{border-top:1px solid #262b34;padding:16px 0;text-align:center;color:#6f7889;font-size:12.5px;line-height:2.1}
.ipv6{
  display:inline-block;border:1px solid #3a4353;border-radius:3px;
  padding:0 7px;font-size:11px;margin-left:6px;color:#9aa3b2;
}

/* ---------- Tab 通用 ---------- */
.tabbar{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:46px}
.tab{
  padding:12px 32px;border-radius:999px;cursor:pointer;
  border:1px solid #d8dfea;background:#fff;color:#414b5c;font-size:15px;
  transition:.2s;letter-spacing:1px;
}
.tab:hover{color:var(--blue);border-color:var(--blue)}
.tab.active{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}
.tabpanel{display:none}
.tabpanel.active{display:block;animation:fade .35s}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- 图片占位渐变 ---------- */
.ph{background:linear-gradient(135deg,#0d4fb0,#3d86f5);position:relative;overflow:hidden}
.ph::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(220px 120px at 85% 20%,rgba(255,255,255,.22),transparent 70%),
    radial-gradient(180px 120px at 10% 90%,rgba(255,255,255,.14),transparent 70%);
}
.ph.g2{background:linear-gradient(135deg,#0f8f62,#34c98e)}
.ph.g3{background:linear-gradient(135deg,#d97f0e,#f5b942)}
.ph.g4{background:linear-gradient(135deg,#5b5bd6,#8f8ff5)}
.ph.g5{background:linear-gradient(135deg,#0e7490,#2dd4bf)}
.ph.g6{background:linear-gradient(135deg,#7c3aed,#a78bfa)}
.ph.g7{background:linear-gradient(135deg,#0b3379,#1266e0)}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .stats,.caps,.params,.contact-grid{grid-template-columns:1fr 1fr}
  .cover{grid-template-columns:1fr}
  .banner h1{font-size:30px}
  .main-nav a{padding:26px 10px;font-size:14px}
  .main-nav a.active::after{left:10px;right:10px}
  .param{border-bottom:1px solid var(--line)}
  .param:nth-child(2n){border-right:none}
}
@media(max-width:600px){
  .stats,.caps,.params,.contact-grid{grid-template-columns:1fr}
  .param{border-right:none}
  .banner h1{font-size:25px;letter-spacing:2px}
  .banner .container{padding-top:60px;padding-bottom:60px}
  .news-item{flex-direction:column;align-items:stretch;text-align:center}
  .news-thumb{margin:0 auto}
  .footer-top{justify-content:center;text-align:center}
}