/* 中尚能源 站点基础样式 */
:root{
  --kz-ink:#101820;
  --kz-deep:#0b1f27;
  --kz-deep2:#123240;
  --kz-amber:#d99a3d;
  --kz-amber-l:#f0b764;
  --kz-paper:#f6f4ef;
  --kz-paper2:#efece4;
  --kz-line:#e0dad0;
  --kz-line-d:#254552;
  --kz-muted:#6d7671;
  --kz-text:#222b2e;
  --kz-white:#fff;
  --kz-w:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:15px;line-height:1.85;color:var(--kz-text);background:var(--kz-white);overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul,ol{list-style:none}
h1,h2,h3,h4{font-weight:700;line-height:1.35;letter-spacing:.01em;color:var(--kz-ink)}
h1{font-size:30px}h2{font-size:26px}h3{font-size:18px}h4{font-size:16px}
.kz-wrap{width:100%;max-width:var(--kz-w);margin:0 auto;padding:0 24px}
.kz-clear::after{content:"";display:table;clear:both}
.kz-hide{display:none}

/* 顶部信息条 */
.kz-top{background:var(--kz-deep);color:#c8d3d6;font-size:12.5px;line-height:36px;letter-spacing:.02em}
.kz-top .kz-wrap{display:flex;justify-content:space-between;gap:16px}
.kz-top-l,.kz-top-r{display:flex;gap:22px;flex-wrap:wrap}
.kz-top a:hover{color:var(--kz-amber-l)}

/* 头部 */
.kz-head{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);border-bottom:1px solid var(--kz-line);
  backdrop-filter:saturate(1.2) blur(6px)}
.kz-head.on{box-shadow:0 6px 22px rgba(12,31,39,.09)}
.kz-head-in{display:flex;align-items:center;justify-content:space-between;height:84px;gap:20px}
.kz-logo{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.kz-logo img{height:46px;width:auto}
.kz-logo-txt{display:flex;flex-direction:column;line-height:1.2;border-left:1px solid var(--kz-line);padding-left:12px}
.kz-logo-txt b{font-size:15px;letter-spacing:.04em;color:var(--kz-ink);font-weight:700}
.kz-logo-txt span{font-size:10.5px;color:var(--kz-muted);letter-spacing:.18em;text-transform:uppercase}

.kz-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:flex-end}
.kz-nav>li>a{display:block;padding:10px 14px;font-size:15px;color:#22302f;letter-spacing:.02em;position:relative}
.kz-nav>li>a::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--kz-amber);
  transform:scaleX(0);transform-origin:left;transition:transform .28s ease}
.kz-nav>li>a:hover::after,.kz-nav>li>a.act::after{transform:scaleX(1)}
.kz-nav>li>a.act{color:var(--kz-ink);font-weight:600}
.kz-nav>li>a.kz-nav-cta{display:inline-flex;align-items:center;gap:8px;background:var(--kz-deep);color:#fff;
  padding:11px 18px;font-size:14px;letter-spacing:.03em;margin-left:14px}
.kz-nav>li>a.kz-nav-cta:hover{background:var(--kz-amber);color:#221500}
.kz-nav>li>a.kz-nav-cta::after{display:none}
.kz-burger{display:none;width:44px;height:44px;border:1px solid var(--kz-line);background:#fff;position:relative}
.kz-burger i{position:absolute;left:12px;right:12px;height:2px;background:var(--kz-ink);transition:.25s}
.kz-burger i:nth-child(1){top:14px}.kz-burger i:nth-child(2){top:21px}.kz-burger i:nth-child(3){top:28px}
.kz-burger.on i:nth-child(1){top:21px;transform:rotate(45deg)}
.kz-burger.on i:nth-child(2){opacity:0}
.kz-burger.on i:nth-child(3){top:21px;transform:rotate(-45deg)}

/* 按钮 */
.kz-btn{display:inline-flex;align-items:center;gap:10px;padding:13px 26px;font-size:14px;letter-spacing:.06em;
  border:1px solid var(--kz-amber);background:var(--kz-amber);color:#1c1405;transition:.25s}
.kz-btn:hover{background:#f0b764;border-color:#f0b764}
.kz-btn-ghost{border-color:rgba(255,255,255,.55);background:transparent;color:#fff}
.kz-btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.kz-btn-line{border-color:var(--kz-line);background:transparent;color:var(--kz-ink)}
.kz-btn-line:hover{border-color:var(--kz-amber);color:#8a5a12;background:#fffaf1}
.kz-btn .kz-arr{font-family:Arial,sans-serif;letter-spacing:0}

/* 栏目标题 */
.kz-sec{padding:88px 0}
.kz-sec.tight{padding:56px 0}
.kz-sec.paper{background:var(--kz-paper)}
.kz-sec.dark{background:var(--kz-deep);color:#c9d5d7}
.kz-sec.dark h2,.kz-sec.dark h3{color:#fff}
.kz-hd{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:44px;flex-wrap:wrap}
.kz-hd-t .kz-kick{display:flex;align-items:center;gap:10px;font-size:11.5px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--kz-amber);margin-bottom:12px}
.kz-hd-t .kz-kick::before{content:"";width:26px;height:2px;background:var(--kz-amber)}
.kz-hd-t h2{font-size:27px;letter-spacing:.02em}
.kz-hd-t p{color:var(--kz-muted);font-size:14px;margin-top:10px;max-width:640px}
.kz-sec.dark .kz-hd-t p{color:#9db1b6}
.kz-hd .kz-more{font-size:13px;color:var(--kz-muted);letter-spacing:.05em;border-bottom:1px solid var(--kz-line);padding-bottom:3px}
.kz-hd .kz-more:hover{color:var(--kz-amber);border-color:var(--kz-amber)}
.kz-sec.dark .kz-hd .kz-more{color:#a9bcc1;border-color:var(--kz-line-d)}

/* 网格 */
.kz-g{display:grid;gap:26px}
.kz-g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.kz-g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.kz-g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.kz-g>*{min-width:0}

/* 页脚 */
.kz-foot{background:#0a1a21;color:#93a5ab;padding:64px 0 0;font-size:13.5px}
.kz-foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid #173039}
.kz-foot h4{color:#e8eef0;font-size:15px;margin-bottom:18px;letter-spacing:.04em}
.kz-foot li{margin-bottom:10px}
.kz-foot a:hover{color:var(--kz-amber-l)}
.kz-foot-brand p{line-height:1.9;color:#8fa2a8;margin-top:14px;max-width:330px}
.kz-foot-brand img{height:38px;width:auto;filter:none}
.kz-foot-meta{padding:20px 0;font-size:12px;color:#6c8087;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* 内页页头 */
.kz-chead{background:var(--kz-deep);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.kz-chead::after{content:"";position:absolute;right:-80px;top:-60px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(217,154,61,.18),transparent 68%)}
.kz-chead .kz-kick{font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--kz-amber-l);margin-bottom:14px}
.kz-chead h1{color:#fff;font-size:32px;letter-spacing:.02em}
.kz-chead p{color:#a9bdc2;margin-top:14px;max-width:760px;font-size:14.5px}
.kz-crumb{font-size:12.5px;color:#7d939a;margin-bottom:18px}
.kz-crumb a:hover{color:var(--kz-amber-l)}
.kz-crumb span{color:#c6d3d6}

/* 响应式 */
@media (max-width:1100px){
  .kz-nav>li>a{padding:10px 10px;font-size:14px}
  .kz-logo img{height:40px}
}
@media (max-width:960px){
  .kz-top{display:none}
  .kz-head-in{height:70px}
  .kz-burger{display:block}
  .kz-nav{position:fixed;left:0;right:0;top:70px;background:#fff;flex-direction:column;align-items:stretch;
    padding:10px 20px 22px;border-bottom:1px solid var(--kz-line);display:none;max-height:calc(100vh - 70px);overflow:auto}
  .kz-nav.on{display:flex}
  .kz-nav>li>a{padding:14px 4px;border-bottom:1px solid #f0ede6;font-size:15px}
  .kz-nav>li>a::after{display:none}
  .kz-nav-cta{margin:14px 0 0;justify-content:center}
  .kz-g3,.kz-g4{grid-template-columns:repeat(2,1fr)}
  .kz-sec{padding:56px 0}
  .kz-hd{margin-bottom:30px}
  .kz-foot-top{grid-template-columns:1fr 1fr;gap:30px}
  .kz-chead{padding:44px 0 40px}
  .kz-chead h1{font-size:25px}
}
@media (max-width:640px){
  .kz-wrap{padding:0 18px}
  h2{font-size:22px}.kz-hd-t h2{font-size:22px}
  .kz-g2,.kz-g3,.kz-g4{grid-template-columns:1fr}
  .kz-foot-top{grid-template-columns:1fr}
  .kz-foot-meta{justify-content:flex-start}
  .kz-sec{padding:44px 0}
  .kz-btn{padding:12px 20px}
}