/* ============================================================
   贵州会议展览网 — 复刻 dhhygs 视觉风格
   ============================================================ */

:root {
  --color-primary: #0b78e6;
  --color-primary-dark: #0063c7;
  --color-primary-light: #e8f1fc;
  --color-accent: #e6870b;
  --color-accent-dark: #c57208;
  --color-text: #282828;
  --color-text-light: #838383;
  --color-text-lighter: #959595;
  --color-bg: #fff;
  --color-bg-gray: #f5f5f5;
  --color-bg-dark: #222;
  --color-border: #e8e8e8;
  --font-body: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --max-width: 1220px;
  --radius: 4px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-body);color:var(--color-text);background:var(--color-bg);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;font-size:14px}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-text-light);text-decoration:none}
a:hover{color:var(--color-primary)}
.container{max-width:var(--max-width);margin:0 auto;padding:0 10px}

/* Top Bar */
.topbar{background:#222;color:#aaa;font-size:13px;padding:6px 0;border-bottom:1px solid #333}
.topbar-inner{max-width:var(--max-width);margin:0 auto;padding:0 10px;display:flex;justify-content:space-between;align-items:center}
.topbar-tel{color:#e89a3c;font-weight:600;font-size:14px}

/* Header — dhhygs style */
.site-header{background:#fff;border-bottom:2px solid var(--color-primary);position:sticky;top:0;z-index:100}
.header-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:62px;padding:0 10px}
.site-logo{font-size:1.1rem;font-weight:700;color:var(--color-text);display:flex;align-items:center;gap:8px}
.site-logo .logo-icon{width:36px;height:36px;flex-shrink:0}
.site-nav{display:flex;gap:0}
.site-nav a{color:var(--color-text);font-size:15px;padding:10px 20px;display:block;transition:all 0.2s;position:relative;font-weight:400}
.site-nav a:hover,.site-nav a.active{color:#fff;background:var(--color-primary)}

/* Hero Carousel */
.hero{width:100%;position:relative;overflow:hidden}
.hero-track{display:flex;transition:transform 0.5s ease}
.hero-slide{min-width:100%}
.hero-slide img{width:100%;height:auto;display:block}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,0.35);color:#fff;border:none;width:44px;height:44px;font-size:20px;cursor:pointer;z-index:2;transition:background 0.3s}
.hero-arrow:hover{background:rgba(0,0,0,0.6)}
.hero-prev{left:0;border-radius:0 4px 4px 0}
.hero-next{right:0;border-radius:4px 0 0 4px}
.hero-dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:2}
.hero-dots .dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,0.5);cursor:pointer;transition:background 0.3s}
.hero-dots .dot.active,.hero-dots .dot:hover{background:#fff}

/* Buttons */
.btn{display:inline-block;padding:10px 32px;background:var(--color-primary);color:#fff;border:none;border-radius:25px;font-size:16px;font-weight:600;cursor:pointer;transition:all 0.3s}
.btn:hover{background:#fff;color:var(--color-primary);box-shadow:inset 0 0 0 2px var(--color-primary)}

/* Sections — dhhygs pattern: h2 gray 24px + h3 lighter 16px */
.section{padding:30px 0}
.bg-gray{background:var(--color-bg-gray)}
.section-title{text-align:center;margin-bottom:25px}
.section-title h2{font-size:24px;font-weight:400;color:var(--color-text-light);margin-bottom:8px}
.section-title h2 a{color:var(--color-text-light)}
.section-title h2 a:hover{color:var(--color-primary)}
.section-title p{color:var(--color-text-lighter);font-size:16px;font-weight:400}
.section-more{text-align:center;margin-top:20px}
.section-more a{display:inline-block;width:240px;height:38px;line-height:38px;border:1px solid var(--color-primary);background:var(--color-primary);border-radius:25px;text-align:center;font-size:16px;color:#fff;transition:all 0.3s}
.section-more a:hover{background:#fff;color:var(--color-primary)}

/* Service Grid — icon+text cells */
.svc-grid{display:flex;flex-direction:column;gap:4.5mm;background:var(--color-bg-gray)}
.svc-row{display:grid;grid-template-columns:repeat(4,1fr);gap:3mm;background:var(--color-bg-gray)}
.svc-row:not(:last-child){border-bottom:none}
.svc-cell{display:flex;align-items:center;gap:10px;padding:14px 18px;text-decoration:none;color:var(--color-text);font-size:15px;transition:all 0.25s;background:#fff}
.svc-cell:hover{background:var(--color-primary);color:#fff}
.svc-cell:hover svg{stroke:#fff}

/* Solution Cards */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.sol-card{display:block;background:#fff;border-radius:var(--radius);overflow:hidden;transition:all 0.3s;text-decoration:none}
.sol-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.1)}
.sol-img{width:100%;height:180px;overflow:hidden;background:var(--color-primary-light);display:flex;align-items:center;justify-content:center;color:var(--color-text-lighter);font-size:14px}
.sol-img img{width:100%;height:100%;object-fit:cover}
.sol-card span{display:block;padding:10px;text-align:center;font-size:14px;color:var(--color-text);font-weight:600;background:#fff}
.sol-card:hover span{color:var(--color-primary)}
/* Wide cards below */
.sol-grid-wide{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:14px}
.sol-card-wide{display:block;background:#fff;border-radius:var(--radius);overflow:hidden;transition:all 0.3s;text-decoration:none}
.sol-card-wide:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.1)}
.sol-img-wide{width:100%;height:180px;overflow:hidden;background:var(--color-primary-light);display:flex;align-items:center;justify-content:center;color:var(--color-text-lighter);font-size:14px}
.sol-img-wide img{width:100%;height:100%;object-fit:cover}
.sol-card-wide span{display:block;padding:10px;text-align:center;font-size:14px;color:var(--color-text);font-weight:600;background:#fff}
.sol-card-wide:hover span{color:var(--color-primary)}

/* Case Grid — dhhygs 3-col card style */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{position:relative;display:block;text-decoration:none;color:inherit;border-radius:var(--radius);overflow:hidden;background:var(--color-bg-gray);transition:all 0.3s}
.case-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.1)}
.case-card .case-img{width:100%;height:220px;display:flex;align-items:center;justify-content:center;color:var(--color-text-lighter);font-size:15px;background:var(--color-primary-light)}
.case-card .case-tag{position:absolute;top:20px;left:0;z-index:2;background:var(--color-primary);color:#fff;padding:6px 14px;border-radius:0 4px 4px 0;font-size:14px}
.case-card .case-info{padding:14px 18px;background:#fff;border-radius:0 0 var(--radius) var(--radius)}
.case-card .case-info h3{font-size:15px;font-weight:600;color:var(--color-text);text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* Reason Grid — dhhygs style */
.reason-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden}
.reason-item{text-align:center;padding:30px 18px 24px;background:#fff;transition:all 0.3s;border-right:1px solid var(--color-border)}
.reason-item:last-child{border-right:none}
.reason-item:hover{background:var(--color-primary);color:#fff}
.reason-item:hover h3,.reason-item:hover p{color:#fff}
.reason-icon{margin-bottom:12px}
.reason-icon svg{transition:all 0.3s}
.reason-item:hover .reason-icon svg{stroke:#fff}
.reason-item h3{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--color-text)}
.reason-item p{color:var(--color-text-light);font-size:14px;line-height:1.7}

/* Article Cards */
.article-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.article-card{display:block;color:inherit;text-decoration:none;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden;transition:all 0.3s}
.article-card:hover{box-shadow:0 4px 12px rgba(0,0,0,0.08);transform:translateY(-2px)}
.article-card-img{height:200px;overflow:hidden;background:var(--color-bg-gray)}
.article-card-img img{width:100%;height:100%;object-fit:cover}
.article-card-body{padding:16px 18px}
.article-card-body h3{font-size:16px;font-weight:600;margin-bottom:6px;color:var(--color-text)}
.article-card-body p{color:var(--color-text-light);font-size:14px;line-height:1.6}
.article-card-meta{font-size:13px;color:var(--color-text-lighter);margin-top:12px;padding-top:10px;border-top:1px solid var(--color-border)}

/* Footer */
.site-footer{background:#222;color:#999;padding:40px 0 20px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:24px}
.footer-col h4{color:#ccc;font-size:16px;font-weight:600;margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid rgba(255,255,255,0.06)}
.footer-col a{display:block;color:#888;font-size:14px;margin-bottom:8px;transition:color 0.2s}
.footer-col a:hover{color:var(--color-primary)}
.footer-contact{display:flex;gap:24px;flex-wrap:wrap;padding:16px 0;border-top:1px solid rgba(255,255,255,0.06);font-size:14px;color:#888}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.04);padding-top:16px;text-align:center;font-size:13px;color:#666}

/* Breadcrumb / Page Hero */
.breadcrumb{padding:12px 10px;font-size:14px;color:var(--color-text-light);max-width:var(--max-width);margin:0 auto}
.breadcrumb a{color:var(--color-text-light)}
.breadcrumb a:hover{color:var(--color-primary)}
.page-hero{background:var(--color-bg-gray);padding:36px 0;text-align:center}
.page-hero h1{font-size:26px;font-weight:400;color:var(--color-text)}

/* Sub-page cards */
.card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);padding:22px 26px;margin-bottom:14px}
.card h3{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--color-text)}
.card p{color:var(--color-text-light);line-height:1.8;font-size:14px}

/* Service list page */
.svc-list{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.svc-item{background:var(--color-bg-gray);border-radius:var(--radius);padding:0 16px;height:48px;line-height:48px;text-decoration:none;color:var(--color-text);display:flex;align-items:center;justify-content:space-between;font-size:15px;transition:all 0.3s}
.svc-item:hover{background:var(--color-primary);color:#fff}
.svc-item:hover span{color:rgba(255,255,255,0.8)}

/* Hotel cards */
.hotel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.hotel-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);padding:24px;transition:all 0.3s}
.hotel-card:hover{border-color:var(--color-primary);box-shadow:0 2px 8px rgba(0,0,0,0.04)}
.hotel-card h3{font-size:16px;font-weight:600;margin-bottom:8px}

/* Mobile Nav */
.menu-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:36px;height:36px;background:none;border:none;cursor:pointer;z-index:200;padding:0}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--color-text);border-radius:1px;transition:all 0.3s}
.menu-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.site-nav.mobile-open{display:flex!important;flex-direction:column;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,0.98);padding:80px 32px 32px;gap:0;z-index:150;overflow-y:auto}
.site-nav.mobile-open a{padding:16px 0;font-size:1.1rem;border-bottom:1px solid var(--color-border);color:var(--color-text)}
.site-nav.mobile-open a:hover{background:none;color:var(--color-primary)}
.mobile-menu-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.3);z-index:140}
.mobile-menu-overlay.active{display:block}

/* Responsive */
@media(max-width:1024px){
  .sol-grid{grid-template-columns:repeat(3,1fr)}
  .svc-list{grid-template-columns:repeat(3,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .topbar-inner{flex-direction:column;gap:4px;text-align:center}
  .header-inner{height:56px}
  .site-nav{display:none}
  .menu-toggle{display:flex}
  .site-logo{font-size:0.95rem;gap:6px}
  .site-logo .logo-icon{width:28px;height:28px}
  .section{padding:24px 0}
  .section-title h2{font-size:20px}
  .svc-row{grid-template-columns:repeat(2,1fr)}
  .sol-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:1fr}
  .reason-grid{grid-template-columns:repeat(2,1fr)}
  .article-cards{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .svc-list{grid-template-columns:repeat(2,1fr)}
  .hotel-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .sol-grid{grid-template-columns:repeat(2,1fr)}
  .svc-list{grid-template-columns:1fr}
  .reason-grid{grid-template-columns:1fr}
}