/* =========================================================
   鼎立電子 DINLY 共用樣式 - common.css
   供首頁與所有子頁引用。修改此檔可全站同步改外觀。
   ========================================================= */
:root{
  --blue:#0b3d91;
  --blue-dark:#082a63;
  --navy:#0a1f44;
  --gold:#e8a33d;
  --ink:#1c2330;
  --gray:#5b6472;
  --light:#f5f7fb;
  --line:#e4e8f0;
  --white:#ffffff;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI","Microsoft JhengHei","PingFang TC","Noto Sans TC",system-ui,sans-serif;
  color:var(--ink);
  line-height:1.7;
  background:var(--white);
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--white);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(10,31,68,.06);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:52px;width:auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text .en{font-size:12px;letter-spacing:2px;color:var(--gray)}
.brand-text .zh{font-size:22px;font-weight:700;color:var(--navy)}
.nav-links{display:flex;align-items:center;gap:30px;list-style:none}
.nav-links a{font-weight:600;color:var(--ink);font-size:15px;position:relative;padding:6px 0}
.nav-links a:hover{color:var(--blue)}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;
  background:var(--gold);transition:width .25s ease;
}
.nav-links a:hover::after{width:100%}
.nav-cta{
  background:var(--blue);color:#fff !important;padding:10px 20px;border-radius:6px;
  transition:background .2s ease;
}
.nav-cta:hover{background:var(--blue-dark)}
.nav-cta::after{display:none}
.menu-toggle{
  display:none;width:44px;height:44px;border:none;background:transparent;
  cursor:pointer;position:relative;
}
.menu-toggle span{
  position:absolute;left:10px;right:10px;height:2px;background:var(--navy);
  transition:.3s;
}
.menu-toggle span:nth-child(1){top:16px}
.menu-toggle span:nth-child(2){top:23px}
.menu-toggle span:nth-child(3){top:30px}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(to bottom,rgba(10,31,68,.9) 0%,rgba(10,31,68,.35) 32%,rgba(10,31,68,.3) 62%,rgba(10,31,68,.9) 100%),url("hero-bg.jpg") center/cover no-repeat;
  color:#fff;padding:140px 0;position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(232,163,61,.3),transparent 70%);
}
.hero .container{position:relative;z-index:1}
.hero h1{font-size:46px;line-height:1.25;font-weight:800;margin-bottom:18px}
.hero h1 span{color:var(--gold)}
.hero p{font-size:19px;max-width:620px;color:#dbe4f5;margin-bottom:34px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:14px 30px;border-radius:6px;font-weight:700;
  font-size:16px;transition:.2s;
}
.btn-gold{background:var(--gold);color:var(--navy)}
.btn-gold:hover{background:#d89430;color:var(--navy);transform:translateY(-2px)}
.btn-outline{border:2px solid rgba(255,255,255,.6);color:#fff}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.12)}
.hero-stats{display:flex;gap:40px;margin-top:52px;flex-wrap:wrap}
.hero-stats .stat b{font-size:34px;color:var(--gold);display:block}
.hero-stats .stat small{color:#c7d3ea;font-size:14px;letter-spacing:1px}

/* ---------- Hero two-column with ad card ---------- */
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-text h1{max-width:560px}
.hero-text p{max-width:520px}
.hero-media{display:flex;justify-content:center}
.ad-card{
  display:block;width:100%;max-width:360px;background:#fff;border-radius:16px;
  padding:34px 28px;text-align:center;box-shadow:0 20px 50px rgba(0,0,0,.35);
  transition:.3s;
}
.ad-card:hover{transform:translateY(-6px)}
.ad-card img{max-height:200px;width:auto;margin:0 auto 18px}
.ad-label{
  display:inline-block;background:var(--navy);color:#fff;font-size:13px;font-weight:700;
  letter-spacing:2px;padding:8px 18px;border-radius:40px;
}

/* ---------- Sub page header (small banner) ---------- */
.page-hero{
  background:linear-gradient(135deg,var(--navy) 0%,var(--blue) 100%);
  color:#fff;padding:64px 0;position:relative;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;
  background:radial-gradient(circle,rgba(232,163,61,.25),transparent 70%);
}
.page-hero .container{position:relative;z-index:1}
.page-hero .tag{color:var(--gold);font-weight:700;letter-spacing:3px;font-size:14px;display:block;margin-bottom:10px}
.page-hero h1{font-size:38px;font-weight:800;line-height:1.3}
.page-hero .crumbs{color:#c7d3ea;font-size:14px;margin-top:14px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.page-hero .crumbs a{color:#dbe4f5}
.page-hero .crumbs a:hover{color:var(--gold)}

/* ---------- Promo slider ---------- */
.promo-section{background:var(--light)}
.promo-slider{position:relative;max-width:960px;margin:0 auto;overflow:hidden;border-radius:16px;box-shadow:0 16px 40px rgba(10,31,68,.12)}
.promo-track{display:flex;transition:transform .5s ease}
.promo-slide{min-width:100%;display:grid;grid-template-columns:1fr 1fr;align-items:center;background:#fff}
.promo-slide img{width:100%;height:100%;object-fit:cover;min-height:320px}
/* 整張廣告圖單欄顯示 */
.promo-slide-full{grid-template-columns:1fr !important}
.promo-slide-full img{width:100%;height:100%;object-fit:contain;min-height:340px;background:var(--navy)}
/* 品牌影片區 */
.promo-video{position:relative;width:100%;height:100%;min-height:320px;background:#000}
.promo-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.promo-slide-full .promo-video{min-height:340px}
.promo-caption{padding:44px 40px}
.promo-tag{
  display:inline-block;background:var(--gold);color:var(--navy);font-weight:700;
  font-size:13px;letter-spacing:2px;padding:6px 16px;border-radius:40px;margin-bottom:16px;
}
.promo-caption h3{font-size:28px;color:var(--navy);font-weight:800;margin-bottom:14px}
.promo-caption p{color:var(--gray);font-size:16px;margin-bottom:24px}
.promo-nav{
  position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border:none;
  background:rgba(255,255,255,.9);border-radius:50%;font-size:26px;cursor:pointer;z-index:5;
  color:var(--navy);box-shadow:0 4px 14px rgba(0,0,0,.18);transition:.2s;
}
.promo-nav:hover{background:var(--navy);color:#fff}
.promo-nav.prev{left:14px}
.promo-nav.next{right:14px}
.promo-dots{position:absolute;bottom:14px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:5}
.promo-dots button{
  width:10px;height:10px;border-radius:50%;border:none;background:rgba(255,255,255,.6);
  cursor:pointer;transition:.2s;padding:0;
}
.promo-dots button.active{background:var(--navy);width:22px;border-radius:10px}

/* ---------- Section shared ---------- */
.section{padding:80px 0}
.section.alt{background:var(--light)}
.section-head{max-width:640px;margin:0 auto 52px;text-align:center}
.section-head .tag{
  display:inline-block;color:var(--gold);font-weight:700;letter-spacing:3px;
  font-size:14px;margin-bottom:10px;
}
.section-head h2{font-size:34px;color:var(--navy);font-weight:800;margin-bottom:14px}
.section-head p{color:var(--gray);font-size:17px}

/* ---------- About (homepage) ---------- */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.about-desc h3{font-size:26px;color:var(--navy);margin-bottom:18px}
.about-desc p{color:var(--gray);margin-bottom:14px;font-size:16.5px}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px;list-style:none}
.about-points li{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--ink)}
.about-points li::before{
  content:"✓";width:24px;height:24px;flex:0 0 24px;border-radius:50%;
  background:var(--gold);color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;
}
.about-card{
  background:var(--blue);border-radius:16px;padding:36px;color:#fff;position:relative;overflow:hidden;
}
.about-card::after{
  content:"";position:absolute;left:-40px;bottom:-90px;width:220px;height:220px;
  border-radius:50%;background:rgba(232,163,61,.18);
}
.about-card h4{font-size:20px;margin-bottom:18px;position:relative;z-index:1}
.about-card ul{list-style:none;position:relative;z-index:1}
.about-card ul li{margin-bottom:12px;display:flex;gap:10px;align-items:flex-start;font-size:15.5px;color:#dbe4f5}
.about-card ul li b{color:#fff}

/* ---------- Services (homepage cards) ---------- */
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.service-card{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px 22px;
  transition:.25s;display:flex;flex-direction:column;
}
.service-card:hover{transform:translateY(-6px);box-shadow:0 14px 30px rgba(10,31,68,.12);border-color:var(--gold)}
.service-ico{
  width:52px;height:52px;border-radius:12px;background:var(--light);
  display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px;
}
.service-card h3{font-size:17px;color:var(--navy);margin-bottom:8px}
.service-card p{font-size:14px;color:var(--gray);flex:1}
.feature-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{
  background:var(--light);border-radius:12px;padding:32px;border:1px solid var(--line);transition:.25s;
}
.feature-card:hover{box-shadow:0 14px 30px rgba(10,31,68,.1);transform:translateY(-4px)}
.feature-card .s-ico{font-size:30px;margin-bottom:14px}
.feature-card h3{font-size:18px;color:var(--navy);margin-bottom:10px}
.feature-card p{color:var(--gray);font-size:15px}
.feature-card .more{display:inline-block;margin-top:16px;color:var(--blue);font-weight:700;font-size:14px}
.feature-card .more:hover{color:var(--gold)}

/* ---------- Filter bar + Gallery (homepage) ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-bottom:38px}
.filter-btn{
  border:1px solid var(--line);background:#fff;color:var(--ink);padding:10px 22px;
  border-radius:40px;font-size:15px;font-weight:600;cursor:pointer;transition:.2s;
}
.filter-btn:hover{border-color:var(--gold);color:var(--blue)}
.filter-btn.active{background:var(--blue);border-color:var(--blue);color:#fff}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.gallery.empty::after{
  content:"此分類尚無照片";grid-column:1/-1;text-align:center;color:var(--gray);
  padding:40px 0;font-size:16px;
}
.load-more{
  grid-column:1/-1;justify-self:center;margin:26px auto 0;padding:13px 40px;
  border:1px solid var(--blue);background:#fff;color:var(--blue);border-radius:40px;
  font-size:15px;font-weight:700;cursor:pointer;transition:.2s;
}
.load-more:hover{background:var(--blue);color:#fff}
/* 報價表 */
.price-table{width:100%;max-width:780px;margin:0 auto;border-collapse:collapse;border:1px solid var(--line)}
.price-table th,.price-table td{padding:14px 16px;text-align:center;border:1px solid var(--line);font-size:17px}
.price-table th{background:var(--navy);color:#fff;font-weight:700}
.price-table td:first-child{background:var(--light);font-weight:600}
.price-table tr:nth-child(even) td{background:#fafbfe}
/* 設置地點 */
.location-box{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;max-width:900px;margin:0 auto}
.location-text p{font-size:20px}
.location-map{box-shadow:0 10px 26px rgba(10,31,68,.15)}
.location-map iframe{display:block;width:100%}
@media(max-width:760px){.location-box{grid-template-columns:1fr}}
.g-item{border-radius:12px;overflow:hidden;cursor:pointer;position:relative;aspect-ratio:4/3}
.g-item img{width:100%;height:100%;object-fit:cover;transition:.4s}
.g-item:hover img{transform:scale(1.06)}
.g-item::after{
  content:"查看大圖";position:absolute;inset:0;background:rgba(10,31,68,.55);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:600;opacity:0;transition:.3s;
}
.g-item:hover::after{opacity:1}
.lightbox{
  position:fixed;inset:0;background:rgba(6,14,31,.92);display:none;
  align-items:center;justify-content:center;z-index:200;padding:30px;
}
.lightbox.open{display:flex}
.lightbox img{max-width:92%;max-height:88%;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.lightbox .close{
  position:absolute;top:22px;right:28px;color:#fff;font-size:40px;cursor:pointer;line-height:1;
}
.lightbox .nav-btn{
  position:absolute;top:50%;transform:translateY(-50%);color:#fff;font-size:46px;
  cursor:pointer;padding:0 24px;user-select:none;opacity:.8;
}
.lightbox .nav-btn:hover{opacity:1}
.lightbox .prev{left:0}
.lightbox .next{right:0}

/* ---------- CTA ---------- */
.cta{
  background:linear-gradient(120deg,var(--blue) 0%,var(--blue-dark) 100%);
  color:#fff;padding:64px 0;text-align:center;
}
.cta h2{font-size:32px;font-weight:800;margin-bottom:12px}
.cta p{color:#dbe4f5;font-size:17px;margin-bottom:28px}
.cta .btn-gold{font-size:17px;padding:15px 40px}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.contact-card{border:1px solid var(--line);border-radius:12px;padding:28px;background:#fff}
.contact-card .ico{font-size:28px;margin-bottom:14px}
.contact-card h3{font-size:17px;color:var(--navy);margin-bottom:8px}
.contact-card p{color:var(--gray);font-size:15px}
.contact-card b{color:var(--ink)}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#aab6cc;padding:52px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:36px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.site-footer ul{list-style:none}
.site-footer ul li{margin-bottom:10px;font-size:15px}
.site-footer a:hover{color:var(--gold)}
/* 工程實績分2欄，降低footer高度 */
.works-cols{display:grid;grid-template-columns:1fr 1fr;column-gap:28px}
.works-cols li{margin-bottom:8px}
/* 聯絡資訊分2欄，降低footer高度 */
.contact-cols{display:grid;grid-template-columns:1fr 1fr;column-gap:20px}
.contact-cols li{margin-bottom:8px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand img{height:46px;background:rgba(255,255,255,.9);border-radius:6px;padding:4px}
.footer-copy{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;text-align:center;font-size:14px;color:#7d8aa3}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .about-grid{grid-template-columns:1fr;gap:36px}
  .services-grid{grid-template-columns:repeat(3,1fr)}
  .feature-cards{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .menu-toggle{display:block}
  .nav-links{
    position:absolute;top:76px;left:0;right:0;background:var(--white);
    flex-direction:column;align-items:flex-start;gap:0;padding:12px 24px 20px;
    box-shadow:0 12px 24px rgba(10,31,68,.1);display:none;border-top:1px solid var(--line);
  }
  .nav-links.open{display:flex}
  .nav-links li{width:100%}
  .nav-links a{display:block;padding:14px 0;width:100%;font-size:16px}
  .nav-cta{margin-top:8px;width:100%;text-align:center}
  .hero h1{font-size:34px}
  .hero p{font-size:16.5px}
  .hero-stats{gap:26px}
  .hero-stats .stat b{font-size:28px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-text h1{max-width:none}
  .hero-text p{max-width:none}
  .hero-media{order:2}
  .promo-slide{grid-template-columns:1fr}
  .promo-slide img{min-height:220px}
  .promo-caption{padding:32px 24px}
  .promo-caption h3{font-size:23px}
  .page-hero h1{font-size:28px}
  .section{padding:56px 0}
  .section-head h2{font-size:27px}
  .services-grid{grid-template-columns:1fr 1fr}
  .feature-cards{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media(max-width:480px){
  .services-grid{grid-template-columns:1fr}
  .hero{padding:70px 0}
}