/* ============================================================
   YuansuTools theme — main stylesheet (loaded via functions.php)
   ============================================================ */
:root{
  --brand:#eb6446; --brand-dark:#d9532f; --ink:#31363c; --ink2:#303c4b;
  --gray:#898989; --line:#eee; --bg:#f7f7f7;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.7}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 15px}

/* 顶部条 */
.topbar{background:var(--ink2);color:#cfd6de;font-size:13px;padding:6px 0}
.topbar .container{display:flex;justify-content:space-between}
.topbar a{color:#cfd6de}
.topbar a:hover{color:var(--brand)}

/* 导航 */
header.nav{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.06)}
header.nav .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:44px;width:auto}
.logo .name{font-size:19px;font-weight:700;letter-spacing:1px}
.logo .name small{display:block;font-size:11px;color:var(--gray);font-weight:400;letter-spacing:2px}
nav.menu ul{display:flex;list-style:none;gap:4px}
nav.menu a{display:block;padding:24px 16px;font-size:15px;position:relative}
nav.menu a:hover,nav.menu a.on,nav.menu .current-menu-item>a,nav.menu .current_page_item>a{color:var(--brand)}
nav.menu li.menu-item-has-children{position:relative}
nav.menu .sub-menu{position:absolute;top:100%;left:0;background:#fff;min-width:180px;box-shadow:0 8px 24px rgba(0,0,0,.12);display:none;list-style:none}
nav.menu li.menu-item-has-children:hover .sub-menu{display:block}
nav.menu .sub-menu a{padding:10px 16px;font-size:14px;border-bottom:1px solid var(--line);white-space:nowrap}
.nav-toggle{display:none;font-size:24px;background:none;border:none;cursor:pointer}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--ink2)}
.hero .slides{display:flex;transition:transform .6s ease}
.hero .slide{min-width:100%;position:relative}
.hero .slide img{width:100%;height:auto}
.hero .caption{position:absolute;left:0;right:0;bottom:0;padding:28px 0;background:linear-gradient(transparent,rgba(20,24,30,.75));color:#fff}
.hero h1{font-size:26px;font-weight:700}
.hero .caption p{font-size:14px;opacity:.85;margin-top:4px}
.hero .dots{position:absolute;right:20px;bottom:22px;display:flex;gap:8px}
.hero .dots button{width:10px;height:10px;border-radius:50%;border:none;background:rgba(255,255,255,.45);cursor:pointer}
.hero .dots button.on{background:var(--brand)}

/* 通用区块标题 */
.sec{padding:56px 0}
.sec-head{display:flex;align-items:baseline;gap:14px;border-bottom:2px solid var(--line);padding-bottom:12px;margin-bottom:28px;position:relative}
.sec-head h2{font-size:24px}
.sec-head span{color:var(--gray);font-size:13px;letter-spacing:2px;text-transform:uppercase}
.sec-head::after{content:"";position:absolute;left:0;bottom:-2px;width:80px;height:2px;background:var(--brand)}
.sec-head .more{margin-left:auto;font-size:13px;color:var(--gray)}
.sec-head .more:hover{color:var(--brand)}

/* 关于+新闻 双栏 */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.about-box img{float:left;width:180px;margin:0 18px 8px 0;border-radius:4px}
.about-box p{color:#555;font-size:14.5px;text-align:justify}
.news-list{list-style:none}
.news-list li{display:flex;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line)}
.news-list .date{flex:0 0 58px;text-align:center;background:var(--bg);border-radius:4px;padding:6px 0}
.news-list .date b{display:block;font-size:20px;color:var(--brand)}
.news-list .date i{font-style:normal;font-size:11px;color:var(--gray)}
.news-list .t a{font-weight:600;font-size:15px}
.news-list .t a:hover{color:var(--brand)}
.news-list .t em{display:block;font-style:normal;color:var(--gray);font-size:13px;margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:420px}

/* 产品网格 */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.prod-card{border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.25s;background:#fff}
.prod-card:hover{box-shadow:0 10px 26px rgba(235,100,70,.16);transform:translateY(-4px);border-color:var(--brand)}
.prod-card img{aspect-ratio:1/1;object-fit:cover;width:100%}
.prod-card .pt{padding:12px;text-align:center;font-size:14.5px;font-weight:600}
.prod-card a:hover .pt{color:var(--brand)}

/* 行业应用 */
.apply{background:var(--bg)}
.apply-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.apply-card{position:relative;border-radius:6px;overflow:hidden}
.apply-card img{aspect-ratio:1/1;object-fit:cover;transition:.3s;width:100%}
.apply-card:hover img{transform:scale(1.06)}
.apply-card .lb{position:absolute;left:0;right:0;bottom:0;padding:8px;text-align:center;background:rgba(48,60,75,.82);color:#fff;font-size:13.5px}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:6px;margin-bottom:12px;background:#fff}
.faq summary{padding:16px 20px;font-weight:600;cursor:pointer;list-style:none;position:relative}
.faq summary::after{content:"+";position:absolute;right:20px;color:var(--brand);font-size:20px}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 20px 16px;color:#555;font-size:14.5px}

/* 页脚 */
footer{background:var(--ink2);color:#aeb8c2;margin-top:20px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:36px;padding:44px 0}
footer h3{color:#fff;font-size:16px;margin-bottom:14px}
footer li{list-style:none;font-size:13.5px;padding:3px 0}
footer a:hover{color:var(--brand)}
footer .brandline{display:flex;align-items:center;gap:10px;margin-bottom:12px}
footer .brandline img{height:38px;background:#fff;border-radius:4px;padding:3px}
footer .copy{border-top:1px solid rgba(255,255,255,.08);padding:16px 0;text-align:center;font-size:12.5px}
.copy .icp{color:#7f8a95}

/* 内页 */
.page-hero{background:var(--ink2);color:#fff;padding:34px 0}
.page-hero h1{font-size:24px}
.page-hero .crumb{font-size:13px;color:#aeb8c2;margin-top:6px}
.page-hero .crumb a{color:#cfd6de}
.page-hero .crumb a:hover{color:var(--brand)}
.content-wrap{padding:44px 0;min-height:400px}
.entry{font-size:15.5px;color:#3c4249}
.entry h2,.entry h3,.entry h4{margin:1.4em 0 .6em;line-height:1.4}
.entry p{margin-bottom:1em}
.entry ul,.entry ol{margin:0 0 1em 1.5em}
.entry img{margin:12px auto;border-radius:4px}
.entry table{border-collapse:collapse;width:100%;margin:14px 0;font-size:14px}
.entry th,.entry td{border:1px solid #ddd;padding:8px 10px;text-align:left}
.entry th{background:var(--bg)}
.entry blockquote{border-left:3px solid var(--brand);background:var(--bg);padding:12px 18px;margin:14px 0;color:#555}
.post-meta{color:var(--gray);font-size:13px;margin:8px 0 18px}
.post-nav{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:36px;padding-top:18px;font-size:14px}
.post-nav a{color:var(--brand)}

/* 文章归档列表 */
.arch-list{list-style:none}
.arch-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
.arch-list .date{flex:0 0 58px;text-align:center;background:var(--bg);border-radius:4px;padding:6px 0;height:fit-content}
.arch-list .date b{display:block;font-size:20px;color:var(--brand)}
.arch-list .date i{font-style:normal;font-size:11px;color:var(--gray)}
.arch-list .t a{font-weight:600;font-size:16px}
.arch-list .t a:hover{color:var(--brand)}
.arch-list .t em{display:block;font-style:normal;color:var(--gray);font-size:13.5px;margin-top:4px}

/* 分页 */
.pagination{display:flex;gap:8px;justify-content:center;margin-top:30px}
.pagination a,.pagination span{padding:6px 14px;border:1px solid var(--line);border-radius:4px;font-size:14px}
.pagination .current{background:var(--brand);color:#fff;border-color:var(--brand)}
.pagination a:hover{border-color:var(--brand);color:var(--brand)}

/* 联系/留言表单 */
.wpcf7 input[type=text],.wpcf7 input[type=email],.wpcf7 input[type=tel],.wpcf7 textarea{width:100%;padding:10px 12px;border:1px solid #ddd;border-radius:4px;margin-bottom:12px;font-size:14.5px}
.wpcf7 input[type=submit]{background:var(--brand);color:#fff;border:none;padding:12px 34px;border-radius:4px;font-size:15px;cursor:pointer}
.wpcf7 input[type=submit]:hover{background:var(--brand-dark)}

/* 404 */
.nf404{text-align:center;padding:80px 0}
.nf404 .code{font-size:88px;font-weight:800;color:var(--brand)}
.nf404 p{color:var(--gray);margin:10px 0 24px}
.nf404 a.btn{background:var(--brand);color:#fff;padding:12px 30px;border-radius:4px}

@media(max-width:900px){
  .duo{grid-template-columns:1fr}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .apply-grid{grid-template-columns:repeat(3,1fr)}
  footer .cols{grid-template-columns:1fr}
  nav.menu{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;box-shadow:0 8px 24px rgba(0,0,0,.12)}
  nav.menu.open{display:block}
  nav.menu ul{flex-direction:column}
  nav.menu a{padding:12px 20px}
  nav.menu .sub-menu{position:static;box-shadow:none;display:block}
  .nav-toggle{display:block}
  .hero h1{font-size:19px}
}

/* 聚合页子页卡片 */
.subpage-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:24px}
.subpage-card{display:block;border:1px solid #eee;border-radius:10px;padding:18px 20px;text-decoration:none;color:inherit;transition:box-shadow .2s,border-color .2s;background:#fff}
.subpage-card:hover{border-color:#eb6446;box-shadow:0 4px 16px rgba(235,100,70,.12)}
.subpage-card h3{margin:0 0 8px;font-size:17px;color:#1a1a1a}
.subpage-card p{margin:0;font-size:13.5px;color:#777;line-height:1.7}
/* 2026-09-03 聚合页卡片缩略图 */
.subpage-card{padding:0;overflow:hidden}
.subpage-card .card-thumb{display:block;aspect-ratio:4/3;background:#f6f6f6;overflow:hidden}
.subpage-card .card-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}
.subpage-card:hover .card-thumb img{transform:scale(1.04)}
.subpage-card .card-body{display:block;padding:14px 16px 16px}

/* 2026-09-03 公司简介区块优化：图片放大、图文并排、消除下方留白 */
.about-box{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:22px;align-items:stretch}
.about-box .sec-head{grid-column:1/-1;margin-bottom:4px}
.about-box img{float:none;width:100%;height:100%;min-height:230px;margin:0;object-fit:cover;border-radius:8px}
.about-box p{margin:0;font-size:15px;line-height:1.9;align-self:center}
@media (max-width:900px){.about-box{grid-template-columns:1fr}.about-box img{min-height:0;aspect-ratio:16/10}}

/* 2026-09-09 备案信息独立行 */
footer .copy p{margin:2px 0}
footer .copy .icp-line a{color:#8b96a2;text-decoration:none}
footer .copy .icp-line a:hover{color:#cfd8e0;text-decoration:underline}

/* 2026-09-09 关注我们：不可外链的账号用文字样式 */
footer .cols ul li .soc{color:#aeb8c2;font-size:14px;line-height:2}