/* 山东皓宸电子 — 官网 V6 · Apple 极简风格 */
:root {
  --blue: #0071e3; --blue-hover: #0077ed;
  --dark: #1d1d1f; --gray: #86868b; --gray-light: #a1a1a6;
  --bg: #f5f5f7; --white: #ffffff; --border: rgba(0,0,0,0.08);
  --glass: rgba(255,255,255,0.72); --glass-border: rgba(255,255,255,0.6);
  --radius: 18px; --radius-sm: 12px;
}

*{margin:0;padding:0;box-sizing:border-box}

body{
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--dark); background: var(--bg); font-size: 16px; line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(circle at 20% 10%, rgba(0,113,227,0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 60%, rgba(0,113,227,0.03) 0%, transparent 50%),
    radial-gradient(circle at 50% 90%, rgba(0,113,227,0.05) 0%, transparent 40%);
  background-attachment: fixed;
}
a{text-decoration:none;color:var(--blue);transition:.2s}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}

.container{max-width:1100px;margin:0 auto;padding:0 28px}

/* Navigation */
.header{position:fixed;top:0;left:0;right:0;z-index:999;height:48px;background:rgba(245,245,247,0.8);backdrop-filter:saturate(180%) blur(24px);-webkit-backdrop-filter:saturate(180%) blur(24px);border-bottom:1px solid var(--glass-border)}
.header-inner{max-width:1100px;margin:0 auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:8px;color:var(--dark);font-size:16px;font-weight:600;letter-spacing:-0.01em}
.logo img{height:28px}
.nav{display:flex;list-style:none;gap:4px}
.nav a{padding:14px 16px;font-size:13px;color:var(--gray);letter-spacing:-0.01em;transition:.2s}
.nav a:hover{color:var(--dark);text-decoration:none}
.nav a.active{color:var(--dark)}
.menu-btn{display:none;background:none;border:none;cursor:pointer;padding:8px}
.menu-btn span{display:block;width:18px;height:2px;background:var(--dark);margin:4px 0;border-radius:1px;transition:.2s}

/* Hero */
.hero{padding:150px 0 80px;text-align:center}
.hero h1{font-size:52px;font-weight:700;letter-spacing:-0.02em;line-height:1.15;margin-bottom:20px;color:var(--dark)}
.hero p{font-size:19px;color:var(--gray);max-width:560px;margin:0 auto 40px;line-height:1.7}
.hero .cta-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-stats{display:flex;justify-content:center;gap:56px;margin-top:64px;padding:36px 48px;border-radius:var(--radius);background:var(--glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);display:inline-flex}
.hero-stat h3{font-size:44px;font-weight:700;color:var(--dark);letter-spacing:-0.02em;line-height:1}
.hero-stat p{font-size:14px;color:var(--gray);margin:10px 0 0}

/* Buttons */
.btn{display:inline-block;padding:14px 32px;border-radius:980px;font-size:15px;font-weight:500;letter-spacing:-0.01em;transition:.2s;border:none;cursor:pointer}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-hover);text-decoration:none}
.btn-outline{background:transparent;color:var(--blue);border:1px solid var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff;text-decoration:none}
.btn-ghost{background:transparent;color:var(--blue);padding:14px 20px}
.btn-ghost:hover{text-decoration:underline}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#333;text-decoration:none}

/* Section */
.section{padding:90px 0}
.section.dark{background:linear-gradient(180deg,#1d1d1f,#2a2a30);color:#fff}
.section-title{margin-bottom:52px;text-align:center}
.section-title h2{font-size:36px;font-weight:700;letter-spacing:-0.015em;line-height:1.3;color:var(--dark);margin-bottom:10px}
.section-title p{font-size:17px;color:var(--gray);line-height:1.6}
.section-label{font-size:13px;font-weight:600;color:var(--blue);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:8px}
.section.dark .section-title h2,.section.dark .section-title p{color:#fff}
.section.dark .section-title p{color:rgba(255,255,255,0.6)}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--glass);border-radius:var(--radius);padding:30px 26px;border:1px solid var(--glass-border);transition:.3s;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
.card:hover{box-shadow:0 6px 32px rgba(0,0,0,0.06);transform:translateY(-2px);background:rgba(255,255,255,0.88)}
.card .icon{font-size:30px;margin-bottom:14px}
.card h4{font-size:17px;font-weight:600;margin-bottom:6px}
.card p{font-size:14px;color:var(--gray);line-height:1.7}
.card h3{font-size:18px;font-weight:600;margin-bottom:6px;color:var(--dark)}
.card .card-icon,.card-icon{margin-bottom:14px}
.icon-svg{width:28px;height:28px;color:var(--blue)}
.card-grid.col4{grid-template-columns:repeat(4,1fr)}
.card-grid.col2{grid-template-columns:repeat(2,1fr)}

/* Case cards */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-banner{height:160px;display:flex;align-items:flex-end;padding:20px;border-radius:var(--radius) var(--radius) 0 0;color:#fff;font-size:13px;font-weight:600;letter-spacing:0.3px}
.case-card{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:.3s;display:block;color:var(--dark)}
.case-card:hover{box-shadow:0 6px 32px rgba(0,0,0,0.08);transform:translateY(-2px);text-decoration:none}
.case-card img{width:100%;height:200px;object-fit:cover;display:block}
.case-card .case-info{padding:20px 24px}
.case-card h4{font-size:17px;font-weight:600;margin-bottom:6px;line-height:1.4}
.case-card p{font-size:14px;color:var(--gray);line-height:1.6}

/* Case cards — glass grid */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-item-glass{background:var(--glass);border-radius:var(--radius);overflow:hidden;border:1px solid var(--glass-border);transition:.3s;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
.case-item-glass:hover{box-shadow:0 6px 32px rgba(0,0,0,0.06);transform:translateY(-2px);background:rgba(255,255,255,0.88)}
.case-item-glass img{width:100%;height:190px;object-fit:cover;display:block}
.case-item-body{padding:20px 22px 22px}
.case-item-body h3{font-size:16px;font-weight:600;margin-bottom:8px;line-height:1.3}
.case-item-body p{font-size:13px;color:var(--gray);line-height:1.7;margin-top:8px}
.case-tags{display:flex;flex-wrap:wrap;gap:6px}
.case-tags span{font-size:11px;padding:2px 10px;background:var(--bg);border-radius:980px;color:var(--gray)}

/* News grid */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{background:var(--glass);border-radius:var(--radius);padding:26px;border:1px solid var(--glass-border);transition:.3s;display:block;color:var(--dark);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
.news-card:hover{box-shadow:0 6px 32px rgba(0,0,0,0.06);text-decoration:none;background:rgba(255,255,255,0.88)}
.news-tag{display:inline-block;font-size:12px;padding:2px 10px;border-radius:980px;margin-bottom:10px;font-weight:500}
.news-tag.tech{background:#e8f1fb;color:var(--blue)}
.news-tag.case{background:#e8f5e9;color:#1d7a1d}
.news-tag.guide{background:#fff3e0;color:#b85c00}
.news-tag.insight{background:#f3e8ff;color:#6b21a8}
.news-card h4{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:6px}
.news-card p{font-size:14px;color:var(--gray);line-height:1.6}
.news-card .news-date,.news-card .date{font-size:13px;color:var(--gray-light);margin-top:10px;display:block}

/* CTA */
.cta{padding:80px 0;text-align:center;color:#fff;background:linear-gradient(180deg,#1d1d1f,#2d2d32)}
.cta h2{font-size:40px;font-weight:700;letter-spacing:-0.025em;margin-bottom:12px}
.cta p{font-size:19px;color:rgba(255,255,255,0.65);margin-bottom:32px}

/* Footer */
.footer{background:var(--bg);padding:48px 0 32px;border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:32px}
.footer h5{font-size:14px;font-weight:600;color:var(--dark);margin-bottom:12px}
.footer a,.footer p{font-size:13px;color:var(--gray);line-height:2;display:block}
.footer a:hover{color:var(--dark)}
.footer-bottom{padding-top:24px;border-top:1px solid var(--border);font-size:12px;color:var(--gray-light)}
.footer-bottom a{display:inline;color:var(--gray-light)}

/* Page hero */
.page-hero{padding:120px 0 56px;text-align:center;background:var(--white);border-bottom:1px solid var(--border)}
.page-hero h1{font-size:48px;font-weight:700;letter-spacing:-0.025em;line-height:1.1}
.breadcrumb{padding:16px 0;font-size:14px;color:var(--gray)}
.breadcrumb a{color:var(--gray)}

/* Article */
.article-content{max-width:720px;margin:0 auto;padding:40px 0 60px}
.article-content h2{font-size:28px;font-weight:700;letter-spacing:-0.015em;margin:48px 0 16px;color:var(--dark)}
.article-content h3{font-size:20px;font-weight:600;margin:32px 0 12px;color:var(--dark)}
.article-content p{margin-bottom:20px;font-size:17px;line-height:1.8;color:var(--dark)}
.article-content ul,.article-content ol{margin:0 0 20px 24px}
.article-content li{margin-bottom:8px;font-size:17px}
.article-content strong{font-weight:600}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-content td,.article-content th{padding:12px 16px;border-bottom:1px solid var(--border);text-align:left}
.article-content th{font-weight:600;color:var(--dark);font-size:14px}
.article-content tr:first-child td,.article-content tr:first-child th{border-top:1px solid var(--border)}
.article-meta{text-align:center;color:var(--gray);font-size:14px;margin-bottom:40px}

/* About page */
.about-layout{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.about-layout h2{font-size:28px;font-weight:700;margin-bottom:24px}
.about-layout p{font-size:16px;color:var(--gray);line-height:1.9;margin-bottom:16px}
.about-layout .highlight{color:var(--dark);font-weight:600}
.badge-list{display:flex;flex-direction:column;gap:12px}
.badge{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:var(--bg);border-radius:var(--radius-sm)}
.badge strong{font-size:15px;font-weight:600}
.badge span{font-size:13px;color:var(--gray)}

/* Contact page */
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-cards{display:flex;flex-direction:column;gap:1px}
.contact-link{display:flex;align-items:center;gap:16px;padding:20px 0;border-bottom:1px solid var(--border);transition:.2s;color:var(--dark)}
.contact-link:hover{color:var(--blue);text-decoration:none}
.contact-link svg{width:22px;height:22px;flex-shrink:0;color:var(--gray)}
.contact-link strong{display:block;font-size:14px;font-weight:600;margin-bottom:2px}
.contact-link em{font-style:normal;font-size:14px;color:var(--gray)}
.contact-form-panel{background:var(--white);border-radius:var(--radius);padding:36px;border:1px solid var(--border)}
.contact-form-panel h3{font-size:20px;font-weight:600;margin-bottom:24px}
.contact-form-panel input,.contact-form-panel textarea{width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:15px;font-family:inherit;background:var(--bg);margin-bottom:14px;transition:.2s}
.contact-form-panel input:focus,.contact-form-panel textarea:focus{outline:none;border-color:var(--blue);background:var(--white)}
.contact-form-panel textarea{height:120px;resize:vertical}
.contact-form-panel button{width:100%}

/* Back to top */
#backTop{position:fixed;bottom:32px;right:32px;width:44px;height:44px;background:rgba(0,0,0,0.12);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:#fff;border:none;border-radius:50%;cursor:pointer;display:none;align-items:center;justify-content:center;z-index:99;font-size:20px;transition:.3s;border:1px solid rgba(255,255,255,0.2)}
#backTop.show,#backTop.visible{display:flex}
#backTop:hover{background:rgba(0,0,0,0.3)}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Mobile */
@media(max-width:768px){
  .hero h1{font-size:36px}.hero p{font-size:17px}.hero{padding:100px 0 60px}
  .hero-stats{flex-wrap:wrap;gap:24px}.hero-stat{flex:0 0 calc(50% - 12px)}
  .section{padding:60px 0}.section-title h2{font-size:28px}.section-title p{font-size:16px}
  .card-grid,.case-grid,.news-grid{grid-template-columns:1fr}
  .card-grid.col4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .page-hero h1{font-size:32px}
  .nav{display:none;flex-direction:column;position:fixed;top:48px;left:0;right:0;bottom:0;background:rgba(245,245,247,0.98);backdrop-filter:blur(20px);padding:24px;overflow-y:auto}
  .nav.show{display:flex}
  .nav a{font-size:28px;font-weight:600;padding:12px 0;color:var(--dark)}
  .nav a.active{color:var(--blue)}
  .menu-btn{display:block}
  .cta h2{font-size:28px}
  .article-content h2{font-size:22px}
  .contact-layout{grid-template-columns:1fr}
  .about-layout{grid-template-columns:1fr}
  
}