/* yd2027 - 企业官网主题 */
:root{
  --brand:#1F4E5F;--brand-d:#163A48;--brand-l:#3E7586;--brand-soft:#E5EFED;
  --accent:#D25530;--accent-d:#B5431F;--accent-soft:#FBE9E1;--amber:#E8A33D;--sage:#8FB3AB;
  --bg:#F7F4EE;--surface:#fff;--surface-2:#F1ECE1;--surface-3:#E8E1D2;--line:#E5DED0;
  --ink:#22292F;--ink-2:#565F68;--ink-3:#8B949D;
  --radius-sm:10px;--radius:16px;--radius-lg:24px;--header-h:72px;
  --shadow-sm:0 2px 12px rgba(31,78,95,.07);--shadow:0 14px 36px rgba(31,78,95,.10);
  --shadow-accent:0 12px 26px rgba(210,85,48,.22);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --hero-scrim:rgba(247,244,238,.9);
  --container:1180px;
}
[data-theme="dark"]{
  --bg:#12181c;--surface:#1a2228;--surface-2:#222b32;--surface-3:#2a343c;--line:#33404a;
  --ink:#eef2f4;--ink-2:#b7c0c7;--ink-3:#85919a;--brand-soft:#1d333c;
  --hero-scrim:rgba(18,24,28,.88);--shadow-sm:0 2px 12px rgba(0,0,0,.25);--shadow:0 14px 36px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none;transition:.2s}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block;border:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit}
.container{width:min(100% - 40px,var(--container));margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;border:1px solid transparent;font-weight:600;cursor:pointer;transition:.2s;line-height:1.2}
.btn-lg{padding:14px 26px;font-size:16px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--shadow-accent)}
.btn-accent:hover{background:var(--accent-d);color:#fff;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.icon-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:.2s}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);transition:.25s}
[data-theme="dark"] .site-header{background:var(--surface);border-bottom-color:var(--line)}
.site-header.scrolled{box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:var(--header-h);gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{height:36px;width:auto}
.logo-light{display:none}
[data-theme="dark"] .logo-dark{display:none}
[data-theme="dark"] .logo-light{display:block}
.main-nav{flex:1;display:flex;justify-content:center}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-link{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:999px;color:var(--ink);font-weight:600}
.nav-link:hover,.nav-item.active>.nav-link{color:var(--accent);background:var(--accent-soft)}
.nav-link i{font-size:11px;opacity:.7}
.sub-menu{position:absolute;top:calc(100% + 8px);left:0;min-width:180px;padding:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(6px);transition:.2s}
.nav-item:hover>.sub-menu{opacity:1;visibility:visible;transform:none}
.sub-menu a{display:block;padding:10px 12px;border-radius:10px;color:var(--ink-2);font-weight:500}
.sub-menu a:hover{background:var(--brand-soft);color:var(--brand)}
.sub-toggle{display:none}
.header-actions{display:flex;align-items:center;gap:10px}
.btn-quote{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;background:var(--brand);color:#fff;font-weight:600}
.btn-quote:hover{background:var(--brand-d);color:#fff}
.nav-toggle{display:none}
.nav-mask{display:none}

/* hero */
.hero{position:relative;overflow:hidden}
.hero-swiper{position:relative}
.hero-slide{position:relative;min-height:min(78vh,680px);display:flex;align-items:center;background:
  radial-gradient(900px 420px at 88% 8%, rgba(210,85,48,.10), transparent 60%),
  radial-gradient(700px 380px at 100% 100%, rgba(31,78,95,.08), transparent 55%),
  var(--bg)}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.22;pointer-events:none}
.hero-content{position:relative;z-index:2;width:min(100% - 40px,var(--container));margin:0 auto;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:56px 0 72px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:var(--accent-soft);color:var(--accent-d);font-size:13px;font-weight:600;margin-bottom:18px}
.hero-title{margin:0 0 16px;font-family:var(--font-serif);font-size:clamp(30px,4.4vw,48px);line-height:1.25;color:var(--ink);font-weight:700;letter-spacing:.02em}
.hero-desc{margin:0 0 28px;color:var(--ink-2);font-size:16px;max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-visual{aspect-ratio:1.15/1;border-radius:var(--radius-lg);background:linear-gradient(145deg,var(--brand) 0%,var(--brand-l) 100%);box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero-visual::before{content:"";position:absolute;inset:18% auto auto 8%;width:58%;height:52%;border-radius:18px;background:rgba(255,255,255,.12);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.18)}
.hero-visual::after{content:"";position:absolute;left:18%;right:14%;bottom:16%;height:38%;background:
  linear-gradient(90deg,transparent 0 8%,#D25530 8% 18%,transparent 18% 28%,#E8A33D 28% 38%,transparent 38% 48%,#8FB3AB 48% 58%,transparent 58% 68%,#fff 68% 78%,transparent 78%),
  linear-gradient(#fff0,#fff0);background-size:100% 100%,100% 2px;opacity:.95;border-radius:8px}
.hero .swiper-pagination{bottom:22px!important}
.hero .swiper-pagination-bullet{width:8px;height:8px;background:var(--sage);opacity:.45}
.hero .swiper-pagination-bullet-active{width:28px;border-radius:999px;background:var(--accent);opacity:1}
.hero .swiper-button-prev,.hero .swiper-button-next{color:var(--brand);width:44px;height:44px;border-radius:50%;background:var(--surface);box-shadow:var(--shadow-sm);top:auto;bottom:18px}
.hero .swiper-button-prev{left:auto;right:78px}
.hero .swiper-button-next{right:24px}
.hero .swiper-button-prev:after,.hero .swiper-button-next:after{font-size:14px;font-weight:700}

/* sections */
.section{padding:88px 0}
.section-tight{padding:28px 0 8px}
.section-head{text-align:center;max-width:720px;margin:0 auto 42px}
.section-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:var(--ink-2);font-size:13px;font-weight:600;margin-bottom:14px}
.section-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.section-title{margin:0 0 12px;font-family:var(--font-serif);font-size:clamp(26px,3vw,36px);line-height:1.3}
.section-desc{margin:0;color:var(--ink-2)}

/* services */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.service-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);transition:.25s}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.service-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--brand-soft);color:var(--brand);font-size:20px;margin-bottom:16px}
.service-card h3{margin:0 0 8px;font-size:20px}
.service-card p{margin:0;color:var(--ink-2);font-size:14px}

/* stats */
.stats-band{background:linear-gradient(120deg,var(--brand),var(--brand-l));border-radius:var(--radius-lg);padding:34px 24px;color:#fff;box-shadow:var(--shadow)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center}
.stat-num{font-size:36px;font-weight:700;line-height:1.1}
.stat-num small{font-size:18px;margin-left:2px;opacity:.9}
.stat-label{margin-top:8px;opacity:.86;font-size:14px}

/* products */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.product-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.25s;display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.product-thumb{position:relative;display:block;aspect-ratio:16/10;background:linear-gradient(135deg,var(--brand-soft),var(--surface-2));overflow:hidden}
.product-thumb img{width:100%;height:100%;object-fit:cover}
.product-fallback,.news-fallback{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;width:100%;height:100%;min-height:160px;color:var(--brand);background:linear-gradient(145deg,var(--brand-soft),var(--surface-2))}
.product-fallback i,.news-fallback i{font-size:28px;opacity:.85}
.product-fallback em{font-style:normal;font-weight:700;font-size:15px}
.product-badge{position:absolute;left:14px;top:14px;padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.92);color:var(--brand);font-size:12px;font-weight:600}
.product-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.product-meta{display:flex;justify-content:space-between;gap:10px;color:var(--ink-3);font-size:12px}
.product-body h3{margin:0;font-size:18px;line-height:1.4}
.product-body h3 a{color:inherit}
.product-body p{margin:0;color:var(--ink-2);font-size:14px;flex:1}
.product-tags{display:flex;flex-wrap:wrap;gap:6px}
.product-tags span{padding:4px 10px;border-radius:999px;background:var(--surface-2);color:var(--ink-2);font-size:12px}
.product-more{color:var(--accent);font-weight:600;font-size:14px}
.section-cta{text-align:center;margin-top:34px}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.news-card{display:grid;grid-template-columns:180px 1fr;background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.25s;min-height:160px}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.news-thumb{position:relative;background:var(--surface-2);min-height:100%}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-cat{position:absolute;left:10px;top:10px;padding:4px 8px;border-radius:999px;background:rgba(31,78,95,.9);color:#fff;font-size:12px}
.news-cat.cat-2{background:rgba(210,85,48,.92)}
.news-body{padding:18px 18px 16px;display:flex;flex-direction:column}
.news-date{color:var(--ink-3);font-size:13px;margin-bottom:8px}
.news-body h3{margin:0 0 8px;font-size:18px;line-height:1.4}
.news-body h3 a{color:inherit}
.news-body p{margin:0 0 12px;color:var(--ink-2);font-size:14px;flex:1}
.news-more{color:var(--accent);font-weight:600;font-size:14px}

/* partners */
.partner-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.partner-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);min-height:88px;display:flex;align-items:center;justify-content:center;gap:10px;padding:16px;color:var(--ink-2);font-weight:600;box-shadow:var(--shadow-sm)}
.partner-item i{font-size:20px;color:var(--brand)}

/* cta */
.cta-band{margin-top:20px;padding:48px 36px;border-radius:var(--radius-lg);background:
  radial-gradient(600px 220px at 90% 0%, rgba(210,85,48,.18), transparent 60%),
  linear-gradient(120deg,var(--brand-d),var(--brand));
  color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{margin:0 0 8px;font-family:var(--font-serif);font-size:28px}
.cta-band p{margin:0;opacity:.9}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.cta-actions .btn-outline{border-color:#fff;color:#fff}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.12);color:#fff}
.cta-actions a.phone{color:#fff;font-weight:700;font-size:18px}

/* footer */
.site-footer{margin-top:40px;background:var(--brand-d);color:rgba(255,255,255,.82)}
.footer-main{padding:56px 0 36px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px}
.footer-brand img{height:36px;margin-bottom:14px;filter:brightness(1.1)}
.footer-brand p{margin:0 0 16px;font-size:14px;line-height:1.8}
.footer-social{display:flex;gap:10px}
.footer-social a{width:34px;height:34px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:rgba(255,255,255,.08);color:#fff}
.footer-social a:hover{background:var(--accent)}
.footer-col h4{margin:0 0 16px;color:#fff;font-size:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.78)}
.footer-col a:hover{color:#fff}
.footer-col a i{margin-right:6px;font-size:12px;opacity:.7}
.footer-contact li{display:flex;gap:10px;align-items:flex-start}
.footer-contact i{margin-top:4px;color:var(--amber)}
.footer-qr{margin-top:16px;display:flex;align-items:center;gap:12px}
.footer-qr img{width:72px;height:72px;border-radius:8px;background:#fff;padding:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;font-size:13px}
.footer-bottom .container{display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between}
.footer-bottom a{color:rgba(255,255,255,.75)}

/* float */
.float-group{position:fixed;right:18px;bottom:24px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-btn{width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--brand);box-shadow:var(--shadow);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;position:relative}
.float-btn:hover{background:var(--brand);color:#fff}
.float-tip{position:absolute;right:56px;white-space:nowrap;background:var(--ink);color:#fff;padding:6px 10px;border-radius:8px;font-size:12px;opacity:0;pointer-events:none;transition:.2s}
.float-btn:hover .float-tip{opacity:1}
.back-top{opacity:0;pointer-events:none;transform:translateY(8px);transition:.2s}
.back-top.show{opacity:1;pointer-events:auto;transform:none}

/* inquiry */
.inquiry-backdrop{position:fixed;inset:0;background:rgba(18,24,28,.45);z-index:120;opacity:0;visibility:hidden;transition:.25s}
.inquiry-backdrop.open{opacity:1;visibility:visible}
.inquiry-panel{position:fixed;top:0;right:0;width:min(420px,100%);height:100%;background:var(--surface);z-index:121;transform:translateX(100%);transition:.3s;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.inquiry-panel.open{transform:none}
.inquiry-panel-header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.inquiry-panel-header h3{margin:0;font-size:18px}
.inquiry-close{border:0;background:transparent;font-size:20px;cursor:pointer;color:var(--ink-2)}
.inquiry-form{padding:20px;overflow:auto;flex:1}
.form-row{margin-bottom:14px}
.form-row label{display:block;margin-bottom:6px;font-size:13px;font-weight:600}
.form-row input,.form-row select,.form-row textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink)}
.form-row textarea{min-height:110px;resize:vertical}
.inquiry-note{font-size:12px;color:var(--ink-3);margin-top:10px}
.inquiry-side{padding:16px 20px;border-top:1px solid var(--line);background:var(--surface-2);font-size:13px;color:var(--ink-2)}
.inquiry-side div{margin-bottom:6px}

/* list / single */
.page-banner{padding:54px 0 34px;background:
  radial-gradient(700px 240px at 100% 0%, rgba(210,85,48,.12), transparent 60%),
  var(--surface-2);border-bottom:1px solid var(--line)}
.page-banner h1{margin:0 0 8px;font-family:var(--font-serif);font-size:34px}
.breadcrumb{color:var(--ink-3);font-size:13px}
.breadcrumb a{color:var(--ink-2)}
.page-main{padding:40px 0 70px}
.list-layout,.single-layout{display:grid;grid-template-columns:1fr 300px;gap:28px}
.article-list{display:flex;flex-direction:column;gap:16px}
.list-card{display:grid;grid-template-columns:220px 1fr;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.list-card .thumb{background:var(--surface-2);min-height:150px}
.list-card .thumb img{width:100%;height:100%;object-fit:cover}
.list-card .body{padding:18px 20px}
.list-card h2{margin:0 0 8px;font-size:20px}
.list-card h2 a{color:inherit}
.list-card .meta{color:var(--ink-3);font-size:13px;margin-bottom:8px}
.list-card p{margin:0;color:var(--ink-2);font-size:14px}
.sidebar-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:16px;box-shadow:var(--shadow-sm)}
.sidebar-box h3{margin:0 0 12px;font-size:16px}
.sidebar-box li{margin-bottom:8px}
.sidebar-box li a{color:var(--ink-2)}
.post-article{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.post-article .post-title{margin:0 0 10px;font-family:var(--font-serif);font-size:30px;line-height:1.35}
.post-meta{color:var(--ink-3);font-size:13px;margin-bottom:22px}
.post-body{font-size:16px;line-height:1.9;color:var(--ink)}
.post-body p{margin:0 0 1em}
.post-body img{border-radius:12px;margin:12px 0}
.post-tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:8px}
.post-tags a{padding:5px 12px;border-radius:999px;background:var(--surface-2);color:var(--ink-2);font-size:13px}
.pagebar{display:flex;justify-content:center;gap:8px;margin-top:28px;flex-wrap:wrap}
.pagebar a,.pagebar span{min-width:38px;height:38px;padding:0 12px;border-radius:10px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;background:var(--surface);color:var(--ink-2)}
.pagebar .now-page,.pagebar a:hover{background:var(--brand);border-color:var(--brand);color:#fff}

/* comments */
.comments{margin-top:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.comment{padding:14px 0;border-bottom:1px solid var(--line)}
.commentpost textarea{width:100%;min-height:100px;border:1px solid var(--line);border-radius:10px;padding:12px;background:var(--bg)}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
.reveal.in{opacity:1;transform:none}

/* responsive */
@media (max-width:1080px){
  .product-grid,.service-grid{grid-template-columns:repeat(2,1fr)}
  .partner-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-content{grid-template-columns:1fr}
  .hero-visual{max-width:420px}
  .list-layout,.single-layout{grid-template-columns:1fr}
}
@media (max-width:860px){
  .main-nav{position:fixed;inset:0 auto 0 0;width:min(320px,86vw);background:var(--surface);padding:84px 18px 24px;transform:translateX(-105%);transition:.3s;z-index:110;box-shadow:var(--shadow);overflow:auto}
  .main-nav.open{transform:none}
  .nav-mask{display:block;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:105;opacity:0;visibility:hidden;transition:.25s}
  .nav-mask.open{opacity:1;visibility:visible}
  .nav-menu{flex-direction:column;align-items:stretch;gap:4px}
  .nav-item.has-sub>.sub-menu{position:static;opacity:1;visibility:visible;transform:none;display:none;box-shadow:none;border:0;padding:0 0 0 12px;background:transparent}
  .nav-item.has-sub.open>.sub-menu{display:block}
  .sub-toggle{display:inline-flex;margin-left:auto;border:0;background:transparent;color:var(--ink-2)}
  .nav-item.has-sub{display:flex;flex-wrap:wrap;align-items:center}
  .nav-item.has-sub>.nav-link{flex:1}
  .nav-toggle{display:inline-flex}
  .btn-quote span{display:none}
  .news-grid{grid-template-columns:1fr}
  .news-card{grid-template-columns:1fr}
  .news-thumb{min-height:180px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:22px}
  .list-card{grid-template-columns:1fr}
}
@media (max-width:640px){
  .service-grid,.product-grid,.partner-grid{grid-template-columns:1fr}
  .hero-slide{min-height:auto}
  .hero-content{padding:40px 0 64px}
  .hero .swiper-button-prev,.hero .swiper-button-next{display:none}
  .section{padding:64px 0}
  .cta-band{padding:32px 22px}
  .footer-grid{grid-template-columns:1fr}
}