/* 河南百年达建机 GEO 官网 共享样式 */
:root{
  --orange:#F5A623; --orange2:#D8901A; --dark:#1a1a1a;
  --ink:#1a1a1a; --gray:#666; --line:#e5e5e5; --bg:#f8f8f8; --white:#fff;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{text-decoration:underline;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 18px;}
h1,h2,h3{color:var(--ink);line-height:1.3;font-weight:700;}
h1{font-size:30px;margin:.6em 0 .4em;}
h2{font-size:23px;margin:1.4em 0 .6em;border-left:5px solid var(--orange);padding-left:12px;}
h3{font-size:19px;margin:1.1em 0 .5em;}
p{margin:.6em 0;}
ul,ol{margin:.5em 0;padding-left:1.4em;}
li{margin:.3em 0;}

/* 顶栏 / 导航（白底通栏，橙色强调） */
.nav{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;box-shadow:0 1px 6px rgba(0,0,0,.06);}
.nav .container{display:flex;align-items:center;flex-wrap:wrap;padding-top:8px;padding-bottom:8px;}
.nav .logo{display:flex;align-items:center;margin-right:28px;text-decoration:none;}
.nav .logo img{height:44px;width:auto;display:block;border-radius:6px;}
.nav .logo-txt{display:flex;flex-direction:column;line-height:1.05;margin-left:10px;}
.nav .logo-txt b{font-size:20px;font-weight:800;color:var(--dark);letter-spacing:1px;}
.nav .logo-txt i{font-style:normal;font-size:11px;color:#888;letter-spacing:2px;margin-top:2px;}
.nav .logo-slogan{display:flex;align-items:center;margin-left:16px;padding-left:16px;border-left:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--orange2);letter-spacing:1px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-links a{color:#2b2b2b;padding:10px 15px;text-decoration:none;font-size:15px;position:relative;white-space:nowrap;}
.nav-links a:hover{color:var(--orange);text-decoration:none;}
.nav-links a.active{color:var(--orange);font-weight:700;}
.nav-links a.active::after{content:"";position:absolute;left:15px;right:15px;bottom:-9px;height:3px;background:var(--orange);border-radius:2px;}
.nav-tel{display:flex;align-items:center;gap:6px;margin-left:26px;white-space:nowrap;}
.nav-tel .tel-label{font-size:12px;color:#888;}
.nav-tel .tel{display:inline-flex;align-items:center;gap:5px;font-size:21px;font-weight:800;color:var(--orange);text-decoration:none;letter-spacing:.5px;}
.nav-tel .tel svg{width:18px;height:18px;fill:var(--orange);}
.nav-tel .tel-man{font-size:13px;color:#556;}
@media(max-width:680px){.nav-links{display:none;}.nav-tel{margin-left:auto;}}

/* 主视觉 */
.hero{background:linear-gradient(135deg,var(--dark) 0%,var(--orange2) 100%);color:#fff;padding:48px 0;}
.hero h1{color:#fff;font-size:34px;margin:0 0 .3em;}
.hero p{font-size:17px;color:#eee;max-width:760px;}
.hero .cta{margin-top:18px;display:flex;gap:12px;flex-wrap:wrap;}
.btn{display:inline-block;padding:11px 22px;border-radius:8px;font-weight:700;font-size:15px;}
.btn.primary{background:var(--orange);color:var(--dark);}
.btn.primary:hover{background:var(--orange2);}
.btn.ghost{border:1.5px solid #fff;color:#fff;}
/* 首页轮播图（橙工业风） */
.banner{position:relative;width:100%;height:440px;overflow:hidden;background:#1a1a1a;}
.banner .slide{position:absolute;inset:0;opacity:0;transition:opacity .6s ease;z-index:1;}
.banner .slide.active{opacity:1;}
.banner .slide img{width:100%;height:100%;object-fit:cover;display:block;}
.banner .slide::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(8,18,28,.78) 0%,rgba(8,18,28,.45) 52%,rgba(8,18,28,.12) 100%);}
.banner .cap{position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);
  padding:0 6%;max-width:820px;z-index:2;}
.banner .cap .lab{display:inline-block;background:var(--orange);color:var(--dark);font-size:13px;
  font-weight:700;padding:4px 13px;border-radius:4px;margin-bottom:15px;letter-spacing:1px;}
.banner .cap h2{color:#fff;border:0;padding:0;margin:0 0 13px;font-size:42px;line-height:1.15;
  text-shadow:0 2px 14px rgba(0,0,0,.45);font-weight:800;}
.banner .cap p{font-size:17px;color:#eee;margin:0 0 24px;max-width:560px;line-height:1.6;}
.banner .cap .acts .btn{margin-right:12px;}
.banner .arrow{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;
  border-radius:50%;background:var(--orange);border:0;color:var(--dark);cursor:pointer;z-index:3;
  display:flex;align-items:center;justify-content:center;box-shadow:0 2px 12px rgba(0,0,0,.35);opacity:.92;
  font-size:20px;line-height:1;}
.banner .arrow:hover{opacity:1;}
.banner .arrow.prev{left:18px;} .banner .arrow.next{right:18px;}
.banner .dots{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);display:flex;gap:9px;z-index:3;}
.banner .dots button{width:11px;height:11px;border-radius:50%;border:0;background:rgba(255,255,255,.55);
  cursor:pointer;padding:0;transition:all .25s;}
.banner .dots button.active{background:var(--orange);width:28px;border-radius:6px;}
@media(max-width:680px){.banner{height:320px;}.banner .cap h2{font-size:28px;}.banner .cap p{font-size:14px;}}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:22px 0;}
.card{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:18px;box-shadow:0 1px 3px rgba(0,0,0,.04);}
.card h3{margin-top:.2em;}
.card .tag{display:inline-block;background:var(--bg);color:var(--orange2);font-size:13px;padding:2px 9px;border-radius:20px;margin-bottom:8px;}

/* 答案胶囊 */
.capsule{background:#fff8ef;border:1px solid #ffe2c2;border-left:5px solid var(--orange);
  border-radius:8px;padding:14px 18px;margin:14px 0;font-size:16px;color:#5a3a12;}
.capsule b{color:var(--orange2);}

/* 表格 */
table{width:100%;border-collapse:collapse;margin:16px 0;background:#fff;font-size:15px;}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top;}
th{background:var(--orange);color:var(--dark);font-weight:600;}
tr:nth-child(even) td{background:#f7fafc;}

/* 面包屑 */
.crumbs{font-size:14px;color:var(--gray);margin:14px 0 0;}
.crumbs a{color:var(--gray);}

/* 区块 */
.section{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px 22px;margin:18px 0;}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
@media(max-width:720px){.grid2{grid-template-columns:1fr;}.hero h1{font-size:27px;}}

/* FAQ 折叠 */
details{background:#fff;border:1px solid var(--line);border-radius:8px;padding:12px 16px;margin:10px 0;}
summary{cursor:pointer;font-weight:600;color:var(--orange);}
details p{margin:.6em 0 0;}

/* 页脚 */
footer{background:var(--dark);color:#aaa;margin-top:34px;padding:30px 0 18px;font-size:14px;}
footer .container{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;}
footer h4{color:#fff;margin:0 0 10px;font-size:15px;}
footer a{color:#cdd9e5;}
footer .beian a{color:#9fb4c8;}
footer .copy{border-top:1px solid #2a4f73;margin-top:18px;padding-top:14px;color:#9fb4c8;text-align:center;}
.note{font-size:13px;color:var(--gray);background:var(--bg);border:1px dashed var(--line);border-radius:8px;padding:12px 16px;margin:16px 0;}
.ph{color:#b00;font-weight:600;}

/* 两栏：左侧产品分类导航 + 右侧效果图 */
.layout-2col{display:grid;grid-template-columns:264px 1fr;gap:20px;align-items:start;}
.sidebar{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;}
.side-title{background:var(--orange);color:var(--dark);font-weight:700;font-size:16px;padding:12px 16px;letter-spacing:1px;
  clip-path:polygon(0 0,100% 0,100% 100%,16px 100%,0 calc(100% - 16px));}
.side-cat{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--dark);font-size:14px;padding:10px 16px;background:#f1f1f1;margin-top:4px;}
.side-cat .tri{width:0;height:0;border-left:8px solid var(--orange);border-top:5px solid transparent;border-bottom:5px solid transparent;flex:0 0 auto;}
.side-count{margin-left:auto;font-size:12px;font-weight:600;color:var(--orange2);background:#fff;border:1px solid var(--line);border-radius:10px;padding:1px 8px;}
.side-item{display:block;color:var(--ink);font-size:13.5px;text-decoration:none;padding:7px 16px 7px 32px;line-height:1.45;border-left:3px solid transparent;}
.side-item:hover{background:var(--bg);color:var(--orange2);border-left-color:var(--orange);}
.side-foot{margin-top:6px;border-top:1px solid var(--line);}
.side-foot .side-title{background:var(--dark);}
.side-foot a{display:block;color:var(--ink);font-size:13px;text-decoration:none;padding:9px 16px;}
.side-foot a:hover{color:var(--orange2);}

.block{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:18px;}
.block-h{display:flex;align-items:center;justify-content:space-between;background:var(--orange);color:var(--dark);font-weight:700;font-size:15px;padding:11px 16px;}
.block-h .more{font-size:13px;font-weight:400;}
.block-h .more a{color:var(--dark);text-decoration:none;}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding:16px;}
.g-item{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;}
.g-thumb{position:relative;aspect-ratio:4/3;background:linear-gradient(135deg,#e2e9f0,#c3d0dd);display:flex;align-items:center;justify-content:center;}
.g-thumb .wm{position:absolute;left:8px;bottom:7px;font-size:12px;color:#46566a;background:rgba(255,255,255,.72);padding:2px 7px;border-radius:4px;}
.g-thumb .tag{position:absolute;right:8px;top:8px;font-size:11px;color:#fff;background:var(--orange);padding:2px 8px;border-radius:4px;}
.g-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.page-img{width:100%;height:auto;max-height:680px;object-fit:contain;border-radius:10px;margin:6px 0 16px;display:block;background:#e9eef3;}
.license-note{display:block;color:#999;font-size:13px;margin:-6px 0 8px;}
.license-wrap{position:relative;max-width:560px;margin:6px 0 8px;}
.license-wrap img{width:100%;height:auto;border-radius:10px;display:block;}
.license-mark{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) rotate(-22deg);
  font-size:clamp(24px,4.5vw,38px);font-weight:700;color:rgba(43,108,200,.32);
  letter-spacing:8px;white-space:nowrap;pointer-events:none;user-select:none;}
.g-cap{font-size:14px;font-weight:600;color:var(--ink);padding:10px 11px 4px;line-height:1.4;}
.g-btn{margin:5px 11px 12px;display:block;text-align:center;background:var(--orange);color:var(--dark);text-decoration:none;font-size:13px;padding:8px 0;border-radius:6px;}
.g-btn:hover{background:var(--orange2);}
@media(max-width:900px){.layout-2col{grid-template-columns:1fr;}.sidebar{position:static;}.gallery{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.gallery{grid-template-columns:1fr;}}
.svc-gallery{margin:18px 0;}
.svc-detail{display:grid;grid-template-columns:1.5fr 1fr;gap:0;background:#fff;border:1px solid #e3e9ef;border-radius:12px;overflow:hidden;}
.svc-detail img{width:100%;height:400px;object-fit:cover;display:block;background:#e9eef3;}
.svc-info{padding:24px;}
.svc-info h2{margin:0 0 10px;font-size:22px;color:var(--ink);}
.svc-info p{margin:0 0 16px;color:#5a6b7b;line-height:1.7;}
.svc-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:14px;}
.svc-thumb{border:2px solid transparent;background:none;padding:0;cursor:pointer;border-radius:8px;overflow:hidden;text-align:center;transition:.15s;}
.svc-thumb img{width:100%;height:82px;object-fit:cover;display:block;background:#e9eef3;}
.svc-thumb span{display:block;font-size:12px;padding:5px 2px;color:var(--ink);line-height:1.3;}
.svc-thumb:hover{border-color:#cbd5de;}
.svc-thumb.active{border-color:var(--orange);}
.svc-thumb.active span{color:var(--orange);font-weight:600;}
@media(max-width:900px){.svc-detail{grid-template-columns:1fr;}.svc-detail img{height:240px;}.svc-thumbs{grid-template-columns:repeat(2,1fr);}}