/* ============================================================
   微擎网络科技 · 官网样式
   意象：深蓝绿黑机柜 + 电光铜青 + 运行灯橙
   ============================================================ */
:root{
  --ink:#0A1620; --ink2:#0E1E2C; --panel:#10232F; --panel2:#15303F;
  --fog:#E7EEF3; --dim:#9FB4C2; --line:rgba(255,255,255,.08);
  --volt:#1FCBA8; --volt-dim:rgba(31,203,168,.16);
  --amber:#F2A33C; --cloud:#F4F7F9; --paper:#16222D;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;background:var(--ink);color:var(--fog);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
u,i{font-style:normal}

/* ---------- 背景纹理 ---------- */
.page-bg::before{content:"";position:fixed;inset:0;z-index:-1;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(31,203,168,.10), transparent 60%),
    radial-gradient(900px 500px at -10% 40%, rgba(242,163,60,.06), transparent 55%),
    linear-gradient(var(--ink),var(--ink));
}
.page-bg::after{content:"";position:fixed;inset:0;z-index:-1;opacity:.5;pointer-events:none;
  background-image:radial-gradient(var(--line) 1px, transparent 1px);background-size:26px 26px}

/* ---------- 页头 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(10,22,32,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:34px;height:34px;border:1px solid var(--volt);border-radius:6px;position:relative;display:grid;place-items:center;background:linear-gradient(160deg,var(--volt-dim),transparent)}
.brand-mark::after{content:"";width:14px;height:10px;border:2px solid var(--volt);border-top:none;clip-path:polygon(0 0,100% 0,100% 100%,50% 62%,0 100%)}
.brand-mark i{position:absolute;top:-3px;right:-3px;width:7px;height:7px;border-radius:50%;background:var(--amber);box-shadow:0 0 8px var(--amber);animation:pulse 2s infinite}
.brand-text{font-weight:800;font-size:20px;letter-spacing:2px}
.brand-text small{display:block;font-size:10px;letter-spacing:3px;color:var(--volt);font-weight:600}
.main-nav{display:flex;gap:6px}
.nav-link{padding:9px 15px;border-radius:6px;font-size:15px;color:var(--fog);transition:.25s var(--ease);border:1px solid transparent}
.nav-link:hover{color:var(--volt)}
.nav-link.is-active{color:var(--volt);border-color:rgba(31,203,168,.28);background:var(--volt-dim)}
.nav-cta{background:linear-gradient(120deg,var(--volt),#14a587);color:#06271f;font-weight:700}
.nav-cta:hover{color:#06271f;box-shadow:0 0 18px rgba(31,203,168,.5)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer}
.nav-toggle span{width:24px;height:2px;background:var(--fog);transition:.3s}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* ---------- 通用区段 ---------- */
.section{padding:72px 0;position:relative}
.section.alt{background:rgba(255,255,255,.02);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-tag{display:inline-flex;align-items:center;gap:8px;color:var(--volt);font-size:13px;letter-spacing:3px;text-transform:uppercase}
.section-tag::before{content:"";width:26px;height:1px;background:var(--volt);display:inline-block}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px}
.sec-title{font-size:32px;font-weight:800;letter-spacing:1px;margin-top:8px}
.sec-title em{font-style:normal;color:var(--volt)}
.sec-num{font-family:"Space Grotesk",monospace;color:var(--dim);letter-spacing:2px}
.sec-more{color:var(--volt);font-size:14px;border-bottom:1px dashed rgba(31,203,168,.5);padding-bottom:2px}
.sec-more:hover{border-color:var(--volt)}

/* ---------- Hero（首页） ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 110px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--amber);font-size:13px;letter-spacing:2px;border:1px solid rgba(242,163,60,.35);padding:6px 14px;border-radius:999px;background:rgba(242,163,60,.08)}
.hero-kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--amber);box-shadow:0 0 8px var(--amber)}
.hero h1{font-size:44px;line-height:1.25;font-weight:900;margin:22px 0 18px;letter-spacing:1px}
.hero h1 .stroke{color:transparent;-webkit-text-stroke:1px var(--volt)}
.hero p.lead{color:var(--dim);font-size:17px;max-width:520px}
.hero-actions{display:flex;gap:14px;margin-top:30px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:8px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.3s var(--ease)}
.btn-primary{background:linear-gradient(120deg,var(--volt),#12a17f);color:#06271f;box-shadow:0 8px 26px rgba(31,203,168,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(31,203,168,.42)}
.btn-ghost{color:var(--fog);border-color:rgba(255,255,255,.22)}
.btn-ghost:hover{border-color:var(--volt);color:var(--volt)}
.hero-panel{position:relative;display:grid;place-items:center}
.hero-rack{width:100%;max-width:400px;background:linear-gradient(170deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:14px;padding:26px 22px;box-shadow:0 30px 60px rgba(0,0,0,.5)}
.rack-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.rack-label{font-size:11px;letter-spacing:2px;color:var(--dim)}
.rack-lights{display:flex;gap:6px}
.rack-lights i{width:9px;height:9px;border-radius:50%}
.rack-lights i:nth-child(1){background:var(--amber)}.rack-lights i:nth-child(2){background:var(--volt)}.rack-lights i:nth-child(3){background:var(--dim)}
.rack-metric{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:18px}
.metric{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:8px;padding:14px 10px;text-align:center}
.metric b{font-size:24px;font-family:"Space Grotesk",monospace;color:var(--volt);display:block}
.metric span{font-size:11px;color:var(--dim)}
.rack-node{display:flex;align-items:center;gap:12px;padding:11px 12px;border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.02);margin-bottom:8px}
.rack-node .led{width:10px;height:10px;border-radius:50%;flex:none}
.rack-node.on .led{background:var(--volt);box-shadow:0 0 10px var(--volt)}
.rack-node.off .led{background:var(--dim)}
.rack-node b{font-size:14px;font-weight:600}
.rack-node p{font-size:11px;color:var(--dim)}
.hero-orb{position:absolute;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(31,203,168,.14),transparent 60%);filter:blur(4px);z-index:-1}

/* 首屏背景轮播（张数不限） */
.hero-slider{position:absolute;inset:0;z-index:0;overflow:hidden;background:var(--panel)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;will-change:opacity,transform;transition:opacity 1.3s var(--ease)}
.hero-bg.is-active{opacity:1;animation:heroKen 7s ease-out forwards}
@keyframes heroKen{from{transform:scale(1.08)}to{transform:scale(1)}}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(78deg,rgba(7,18,24,.86),rgba(7,18,24,.5) 46%,rgba(7,18,24,.16))}
.hero-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);z-index:3;display:flex;gap:8px}
.hero-dots button{width:26px;height:4px;border:0;border-radius:2px;background:rgba(255,255,255,.28);cursor:pointer;transition:.3s;padding:0}
.hero-dots button.on{background:var(--volt);width:36px}
.hero-grid{position:relative;z-index:1}

/* ---------- 服务卡片 ---------- */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.service-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px;position:relative;overflow:hidden;transition:.35s var(--ease)}
.service-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--volt),transparent);opacity:0;transition:.35s}
.service-card:hover{transform:translateY(-6px);border-color:rgba(31,203,168,.4);box-shadow:0 18px 40px rgba(0,0,0,.45)}
.service-card:hover::before{opacity:1}
.service-icon{width:52px;height:52px;border:1px solid rgba(31,203,168,.4);border-radius:10px;display:grid;place-items:center;margin-bottom:16px;background:linear-gradient(160deg,var(--volt-dim),transparent)}
.service-icon svg{width:26px;height:26px;stroke:var(--volt)}
.service-card h3{font-size:19px;font-weight:700}
.service-card .tag{display:inline-block;font-size:12px;color:var(--amber);margin:6px 0 10px}
.service-card p{color:var(--dim);font-size:14px;min-height:60px}
.service-points{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);list-style:none}
.service-points li{font-size:13px;color:var(--fog);padding:4px 0 4px 20px;position:relative}
.service-points li::before{content:"";position:absolute;left:2px;top:11px;width:9px;height:9px;border:1px solid var(--volt);transform:rotate(45deg)}
.service-card .more{margin-top:16px;display:inline-block;color:var(--volt);font-size:14px}

/* ---------- 案例网格 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.35s var(--ease);display:block}
.case-card:hover{transform:translateY(-6px);border-color:rgba(31,203,168,.4);box-shadow:0 18px 40px rgba(0,0,0,.45)}
.case-thumb{height:190px;overflow:hidden;background:linear-gradient(160deg,#16303f,#0d1d29);display:grid;place-items:center;position:relative}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:.5s var(--ease)}
.case-card:hover .case-thumb img{transform:scale(1.05)}
.case-thumb .ph{color:var(--volt);font-family:"Space Grotesk",monospace;font-size:30px;font-weight:700}
.case-body{padding:18px 20px}
.case-body h3{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.case-body .meta{font-size:12px;color:var(--dim);margin-top:6px}

/* ---------- 新闻列表 ---------- */
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.news-item{display:flex;gap:18px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px;transition:.3s var(--ease)}
.news-item:hover{border-color:rgba(31,203,168,.4);transform:translateY(-3px)}
.news-thumb{width:120px;height:88px;border-radius:8px;overflow:hidden;flex:none;background:#0d1d29;display:grid;place-items:center;font-family:"Space Grotesk",monospace;color:var(--volt)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-info h3{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-info .meta{font-size:12px;color:var(--dim);margin-top:8px;display:flex;gap:14px}
.news-info p{font-size:13px;color:var(--dim);margin-top:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-cat{color:var(--amber);font-size:12px}

/* ---------- 合作伙伴 ---------- */
.partner-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.partner-item{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:20px;text-align:center;transition:.3s var(--ease);display:block}
.partner-item:hover{border-color:rgba(31,203,168,.45);transform:translateY(-4px)}
.partner-item b{font-size:18px;font-weight:700;color:var(--fog);letter-spacing:1px}
.partner-item span{display:block;font-size:11px;color:var(--dim);margin-top:4px}

/* ---------- 服务详情 / 文章 ---------- */
.page-head{padding:56px 0;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--ink2),var(--ink))}
.page-head .crumb{color:var(--dim);font-size:13px;margin-bottom:10px}
.page-head h1{font-size:34px;font-weight:800;letter-spacing:1px}
.page-head p.sub{color:var(--dim);margin-top:10px;max-width:720px}
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;padding:56px 0}
.article-body{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:36px 40px}
.article-body h1{font-size:26px;margin-bottom:14px;line-height:1.4}
.article-body .a-meta{font-size:13px;color:var(--dim);padding-bottom:18px;border-bottom:1px dashed var(--line);margin-bottom:22px;display:flex;gap:18px;flex-wrap:wrap}
.article-body .a-content{font-size:15px;color:var(--fog)}
.article-body .a-content p{margin:0 0 16px}
.article-body .a-content img{border-radius:10px;margin:14px 0;border:1px solid var(--line)}
.article-body .a-content h2{font-size:20px;margin:22px 0 12px;color:var(--volt)}
.a-empty{color:var(--dim);text-align:center;padding:40px}
.side-head{font-size:14px;letter-spacing:2px;color:var(--volt);margin-bottom:16px;text-transform:uppercase;display:flex;align-items:center;gap:8px}
.side-head::before{content:"";width:20px;height:1px;background:var(--volt)}
.side-list{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.side-list a{display:block;padding:13px 18px;font-size:14px;border-bottom:1px solid var(--line);transition:.2s}
.side-list a:last-child{border-bottom:0}
.side-list a:hover{color:var(--volt);background:rgba(31,203,168,.05);padding-left:22px}

/* ---------- 分页 ---------- */
.pager{display:flex;gap:8px;justify-content:center;margin-top:40px}
.pager a,.pager span{min-width:40px;height:40px;line-height:40px;text-align:center;border:1px solid var(--line);border-radius:8px;font-size:14px;padding:0 8px}
.pager a:hover{border-color:var(--volt);color:var(--volt)}
.pager .cur{background:var(--volt);color:#06271f;border-color:var(--volt);font-weight:700}

/* ---------- 关于/联系 ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:56px 0}
.about-card,.contact-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:32px}
.about-card h2,.contact-card h2{font-size:22px;margin-bottom:14px}
.about-card p,.contact-card p{color:var(--dim);margin-bottom:12px;font-size:15px}
.contact-row{display:flex;align-items:flex-start;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.contact-row:last-child{border-bottom:0}
.contact-row .ico{width:44px;height:44px;flex:none;border:1px solid rgba(31,203,168,.4);border-radius:10px;display:grid;place-items:center;color:var(--volt);background:var(--volt-dim);font-size:18px}
.contact-row b{display:block;font-size:16px;color:var(--fog)}
.contact-row span{font-size:14px;color:var(--dim)}
.wechat-qr{width:104px;height:104px;border-radius:8px;border:1px solid var(--line);object-fit:contain;background:#fff;flex:none}
.wechat-qr-fallback{display:none;width:104px;height:104px;border:1px dashed var(--line);border-radius:8px;align-items:center;justify-content:center;text-align:center;font-size:11px;line-height:1.5;color:var(--dim);flex:none}
.qr-row{align-items:flex-start}
.qr-box{display:block;margin-top:8px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:20px;background:var(--ink2);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding:60px 24px 40px}
.foot-brand{font-size:20px;font-weight:800;letter-spacing:2px}
.foot-brand small{color:var(--volt);font-size:11px;letter-spacing:3px;margin-left:6px}

/* 全站右下角客服二维码浮窗 */
.kf-float{position:fixed;right:24px;bottom:24px;z-index:1200;display:flex;flex-direction:column;align-items:flex-end;font-family:var(--font)}
.kf-card{background:#0d1417;border:1px solid rgba(190,255,60,.18);border-radius:10px;box-shadow:0 14px 40px rgba(0,0,0,.5);padding:14px;width:188px;text-align:center}
.kf-head{display:flex;align-items:center;justify-content:space-between;color:var(--volt);font-size:14px;font-weight:700;margin-bottom:10px}
.kf-close{background:none;border:0;color:#7d8b8f;font-size:20px;line-height:1;cursor:pointer;padding:0 2px}
.kf-close:hover{color:#fff}
.kf-body img{width:150px;height:150px;object-fit:contain;display:block;margin:0 auto;border-radius:4px;background:#fff;padding:6px}
.kf-tip{color:#9fb0b5;font-size:12px;line-height:1.6;margin:10px 0 2px}
.kf-fab{width:54px;height:54px;border-radius:50%;border:0;background:var(--volt);color:#0b1012;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 8px 24px rgba(190,255,60,.35)}
.kf-fab:hover{transform:translateY(-2px)}
@media(max-width:640px){.kf-float{right:14px;bottom:14px}}
.foot-slogan{color:var(--volt);margin:10px 0 8px;font-size:14px}
.foot-desc{color:var(--dim);font-size:13px;line-height:1.8}
.footer-col h4{font-size:15px;margin-bottom:18px;letter-spacing:1px;color:var(--fog)}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--dim);font-size:14px;transition:.2s}
.footer-col ul a:hover{color:var(--volt);padding-left:4px}
.foot-contact-list li{display:flex;gap:10px;align-items:flex-start;color:var(--fog);font-size:14px;margin-bottom:12px}
.foot-contact-list .i-loc::before{content:"⌖"}
.foot-contact-list .i-tel::before{content:"☏"}
.foot-contact-list .i-mail::before{content:"✉"}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0;color:var(--dim);font-size:13px}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr}.hero-panel{order:-1}.hero h1{font-size:34px}
  .service-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
  .news-list,.about-grid{grid-template-columns:1fr}.article-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:70px;left:0;right:0;flex-direction:column;background:var(--ink2);padding:18px 24px;gap:8px;border-bottom:1px solid var(--line);transform:translateY(-130%);transition:.35s var(--ease)}
  .main-nav.open{transform:translateY(0)}
  .nav-link{padding:14px 12px;border-radius:8px;width:100%}
  .service-grid,.case-grid,.partner-wall{grid-template-columns:1fr 1fr}
  .sec-head{flex-direction:column;align-items:flex-start}
  .sec-title{font-size:26px}
  .partner-wall{grid-template-columns:repeat(3,1fr)}
  .news-item{flex-direction:column}.news-thumb{width:100%;height:150px}
  .footer-grid{grid-template-columns:1fr}.article-body{padding:24px}
}
@media(max-width:420px){.partner-wall{grid-template-columns:repeat(2,1fr)}}