:root{
  --navy:#081D33;
  --navy-2:#0F2A44;
  --blue:#0E6FB8;
  --ice:#2BB8EA;
  --ice-soft:#8FD8F2;
  --frost:#EEF7FC;
  --text:#1E2C39;
  --muted:#56708A;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'Noto Sans TC',-apple-system,sans-serif;color:var(--text);background:#fff;line-height:1.75;font-size:17px;}
img{display:block;max-width:100%;}
a{text-decoration:none;color:inherit;}
.wrap{max-width:1240px;margin:0 auto;padding:0 28px;}
.en{font-family:'Archivo','Noto Sans TC',sans-serif;}

/* reveal animation */
.rv{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease;}
.rv.on{opacity:1;transform:none;}

/* ═══ Header ═══ */
header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid #E3EEF5;}
.nav{display:flex;align-items:center;justify-content:space-between;height:80px;}
.brand{display:flex;align-items:center;gap:14px;}
.brand .brand-logo{width:52px;height:52px;border-radius:13px;box-shadow:0 5px 14px rgba(14,111,184,.35);}
.brand-name{font-weight:900;font-size:21px;color:var(--navy);letter-spacing:1.5px;line-height:1.3;}
.brand-name small{display:block;font-weight:600;font-size:10.5px;color:var(--blue);letter-spacing:3.2px;}
nav ul{display:flex;gap:34px;list-style:none;font-size:16px;font-weight:500;color:var(--navy);}
nav ul a{position:relative;padding:4px 0;}
nav ul a::after{content:'';position:absolute;left:0;bottom:-2px;width:0;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--blue),var(--ice));transition:.25s;}
nav ul a:hover::after{width:100%;}
.nav-cta{background:linear-gradient(135deg,var(--blue),var(--ice));color:#fff;padding:12px 26px;border-radius:99px;font-weight:700;font-size:15.5px;letter-spacing:1px;box-shadow:0 6px 18px rgba(14,111,184,.35);transition:.2s;}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(14,111,184,.5);}

/* ═══ Hero ═══ */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;color:#fff;overflow:hidden;
  background:linear-gradient(115deg,rgba(8,29,51,.88) 32%,rgba(10,58,100,.42) 70%,rgba(43,184,234,.18)),
  url('assets/hero.jpg') center/cover;}
.hero::before{content:'';position:absolute;right:-140px;top:50%;transform:translateY(-50%);width:640px;height:640px;
  background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M87 21 H32 Q15 21 15 38 v26 Q15 81 32 81 h38 Q86 81 86 66 Q86 53 69 53 H45" fill="none" stroke="%232BB8EA" stroke-width="15" stroke-linecap="round" stroke-linejoin="round" opacity=".18"/></svg>') no-repeat center/contain;
  pointer-events:none;}
.hero-inner{position:relative;z-index:2;padding:120px 0 160px;max-width:760px;}
.hero .eyebrow{display:inline-flex;align-items:center;gap:10px;background:rgba(43,184,234,.12);border:1px solid rgba(43,184,234,.45);color:var(--ice-soft);padding:9px 22px;border-radius:99px;font-size:15px;font-weight:500;letter-spacing:3px;margin-bottom:32px;}
.hero h1{font-size:62px;font-weight:900;line-height:1.22;letter-spacing:3px;margin-bottom:24px;}
.hero h1 .hl{background:linear-gradient(90deg,var(--ice),var(--ice-soft));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero p{font-size:20px;font-weight:300;color:#BFD8E9;max-width:600px;margin-bottom:44px;letter-spacing:1px;}
.hero-btns{display:flex;gap:18px;flex-wrap:wrap;}
.btn{display:inline-flex;align-items:center;gap:10px;padding:18px 40px;border-radius:12px;font-size:18px;font-weight:700;letter-spacing:2px;transition:.22s;}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--ice));color:#fff;box-shadow:0 10px 30px rgba(43,184,234,.4);}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(43,184,234,.55);}
.btn-ghost{border:2px solid rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff;}
.hero-badges{position:absolute;bottom:0;left:0;right:0;z-index:3;background:rgba(5,19,36,.82);backdrop-filter:blur(12px);border-top:2px solid rgba(43,184,234,.45);box-shadow:0 -8px 30px rgba(5,19,36,.35);}
.hero-badges .wrap{display:grid;grid-template-columns:repeat(4,1fr);}
.hb{padding:26px 18px;display:flex;align-items:center;gap:14px;border-right:1px solid rgba(255,255,255,.08);}
.hb:first-child{border-left:1px solid rgba(255,255,255,.08);}
.hb b{font-size:34px;font-weight:900;color:var(--ice);line-height:1;font-family:'Archivo',sans-serif;}
.hb span{font-size:14.5px;color:#C9DFEF;letter-spacing:2px;line-height:1.4;}

/* ═══ Section shells ═══ */
section{padding:110px 0;position:relative;}
.sec-head{margin-bottom:64px;position:relative;}
.sec-head .ghost{position:absolute;top:-58px;left:-6px;font-size:110px;font-weight:900;color:var(--navy);opacity:.085;letter-spacing:4px;line-height:1;pointer-events:none;font-family:'Archivo',sans-serif;}
.sec-head .tag{display:inline-flex;align-items:center;gap:10px;color:var(--blue);font-weight:700;font-size:15px;letter-spacing:5px;}
.sec-head .tag::before{content:'';width:34px;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--blue),var(--ice));}
.sec-head h2{font-size:44px;font-weight:900;color:var(--navy);letter-spacing:3px;margin-top:10px;line-height:1.3;}
.sec-head p{color:var(--muted);margin-top:14px;font-size:18px;max-width:640px;}
.sec-head.center{text-align:center;}
.sec-head.center .ghost{left:50%;transform:translateX(-50%);}
.sec-head.center .tag::before{display:none;}
.sec-head.center p{margin-left:auto;margin-right:auto;}

/* ═══ 三大服務 ═══ */
.services{background:linear-gradient(180deg,var(--frost),#fff);}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;}
.svc{position:relative;background:#fff;border-radius:20px;overflow:hidden;box-shadow:0 8px 30px rgba(8,29,51,.08);transition:.28s;display:flex;flex-direction:column;}
.svc:hover{transform:translateY(-8px);box-shadow:0 22px 50px rgba(8,29,51,.16);}
.svc-img{height:230px;overflow:hidden;position:relative;}
.svc-img img{width:100%;height:100%;object-fit:cover;transition:.5s;}
.svc:hover .svc-img img{transform:scale(1.07);}
.svc-num{position:absolute;top:16px;left:16px;background:rgba(8,29,51,.82);backdrop-filter:blur(4px);color:var(--ice);font-weight:800;font-size:14px;letter-spacing:2px;padding:6px 14px;border-radius:8px;font-family:'Archivo',sans-serif;}
.svc-featured{position:absolute;top:16px;right:16px;background:linear-gradient(135deg,var(--blue),var(--ice));color:#fff;font-size:12.5px;font-weight:700;letter-spacing:2px;padding:6px 14px;border-radius:99px;}
.svc-body{padding:32px 30px 34px;flex:1;display:flex;flex-direction:column;border-top:4px solid transparent;background:linear-gradient(#fff,#fff) padding-box,linear-gradient(90deg,var(--blue),var(--ice)) border-box;}
.svc-body h3{font-size:25px;font-weight:900;color:var(--navy);letter-spacing:2px;margin-bottom:12px;}
.svc-body p{font-size:16.5px;color:var(--muted);flex:1;}
.svc-link{margin-top:22px;color:var(--blue);font-weight:700;font-size:16.5px;letter-spacing:1px;display:inline-flex;align-items:center;gap:8px;transition:.2s;}
.svc:hover .svc-link{gap:14px;color:var(--ice);}

/* ═══ 產品線 ═══ */
.prod-grid{display:grid;grid-template-columns:repeat(6,1fr);grid-auto-rows:230px;gap:22px;}
.prod{position:relative;border-radius:18px;overflow:hidden;box-shadow:0 6px 20px rgba(8,29,51,.1);}
.prod:nth-child(1){grid-column:span 4;grid-row:span 1;}
.prod:nth-child(2){grid-column:span 2;}
.prod:nth-child(3){grid-column:span 2;}
.prod:nth-child(4){grid-column:span 2;}
.prod:nth-child(5){grid-column:span 2;}
.prod:nth-child(6){grid-column:span 6;}
.prod img{width:100%;height:100%;object-fit:cover;transition:.5s;}
.prod:hover img{transform:scale(1.06);}
.prod::after{content:'';position:absolute;inset:0;background:linear-gradient(185deg,transparent 45%,rgba(8,29,51,.9));}
.prod b{position:absolute;left:24px;bottom:18px;z-index:2;color:#fff;font-size:21px;font-weight:800;letter-spacing:2px;}
.prod small{position:absolute;left:24px;bottom:50px;z-index:2;color:var(--ice);font-size:12.5px;letter-spacing:3px;font-weight:600;font-family:'Archivo',sans-serif;}

/* ═══ 信任區 ═══ */
.trust{background:var(--navy);color:#fff;overflow:hidden;}
.trust .sec-head h2{color:#fff;}
.trust .sec-head .ghost{color:#fff;opacity:.1;}
.marquee{overflow:hidden;margin:0 -28px 64px;padding:8px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);}
.marquee-track{display:flex;width:max-content;animation:scroll 40s linear infinite;}
@keyframes scroll{to{transform:translateX(-50%);}}
.client{flex:none;margin-right:20px;background:rgba(255,255,255,.93);border:1px solid rgba(255,255,255,.5);border-radius:14px;padding:22px 38px;text-align:center;font-weight:700;font-size:19px;letter-spacing:2px;color:var(--navy);box-shadow:0 6px 18px rgba(0,0,0,.18);}
.client small{display:block;font-size:12.5px;color:#3E82B8;font-weight:400;letter-spacing:2px;margin-top:2px;}
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.cert{background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:30px 26px;transition:.25s;}
.cert:hover{background:rgba(43,184,234,.09);border-color:rgba(43,184,234,.4);transform:translateY(-4px);}
.cert-ico{width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,var(--blue),var(--ice));display:flex;align-items:center;justify-content:center;font-size:25px;margin-bottom:18px;}
.cert b{display:block;font-size:18.5px;letter-spacing:1px;margin-bottom:6px;}
.cert span{font-size:15px;color:#8FA9BE;}

/* ═══ 工程案例 ═══ */
.cases{background:linear-gradient(180deg,#fff,var(--frost));}
.cases-strip{display:grid;grid-template-columns:1.25fr 1fr 1fr;grid-auto-rows:250px;gap:22px;}
.case{border-radius:18px;overflow:hidden;position:relative;box-shadow:0 6px 22px rgba(8,29,51,.12);}
.case:nth-child(1){grid-row:span 2;}
.case img{width:100%;height:100%;object-fit:cover;transition:.5s;}
.case:hover img{transform:scale(1.05);}
.case::after{content:'';position:absolute;inset:0;background:linear-gradient(185deg,transparent 52%,rgba(8,29,51,.88));}
.case b{position:absolute;left:22px;bottom:16px;z-index:2;color:#fff;font-size:18.5px;font-weight:800;letter-spacing:1px;}
.case small{position:absolute;left:22px;bottom:46px;z-index:2;color:var(--ice);font-size:12px;letter-spacing:3px;font-family:'Archivo',sans-serif;font-weight:600;}

/* ═══ 時間軸 ═══ */
.story{background:var(--frost);}
.timeline{position:relative;max-width:800px;margin:0 auto;}
.timeline::before{content:'';position:absolute;left:30px;top:6px;bottom:6px;width:4px;background:linear-gradient(180deg,var(--ice),var(--blue));border-radius:3px;}
.tl-item{position:relative;padding:0 0 52px 92px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{position:absolute;left:16px;top:4px;width:32px;height:32px;border-radius:50%;background:#fff;border:7px solid var(--ice);box-shadow:0 0 0 5px rgba(43,184,234,.18);}
.tl-item b{display:block;font-size:26px;font-weight:900;color:var(--blue);letter-spacing:1px;font-family:'Archivo','Noto Sans TC',sans-serif;}
.tl-item h4{font-size:21px;font-weight:800;color:var(--navy);letter-spacing:1.5px;margin:4px 0 8px;}
.tl-item p{font-size:16.5px;color:var(--muted);}

/* ═══ CTA ═══ */
.cta-band{position:relative;background:linear-gradient(120deg,rgba(9,42,74,.82) 18%,rgba(14,111,184,.55)),url('assets/cta.jpg') center/cover;color:#fff;text-align:center;padding:100px 28px;overflow:hidden;}
.cta-band h2{font-size:40px;font-weight:900;letter-spacing:4px;margin-bottom:16px;}
.cta-band>p{color:#BFD8E9;font-size:19px;margin-bottom:44px;letter-spacing:2px;}
.cta-phones{display:flex;gap:26px;justify-content:center;flex-wrap:wrap;margin-bottom:44px;}
.cta-card{background:rgba(255,255,255,.93);border:1px solid rgba(255,255,255,.6);border-radius:18px;padding:28px 46px;transition:.25s;box-shadow:0 10px 30px rgba(0,0,0,.22);}
.cta-card:hover{background:#fff;transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,.3);}
.cta-card div:first-child{font-size:15px;letter-spacing:4px;color:#46708F;margin-bottom:6px;font-weight:700;}
.cta-phone{font-size:34px;font-weight:900;color:var(--blue);letter-spacing:2px;font-family:'Archivo',sans-serif;}

/* ═══ Footer ═══ */
footer{background:var(--navy);color:#8FA9BE;padding:72px 0 36px;font-size:15.5px;border-top:1px solid rgba(255,255,255,.08);}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr .8fr;gap:52px;margin-bottom:48px;}
.foot-grid h5{color:#fff;font-size:17px;letter-spacing:3px;margin-bottom:18px;}
.foot-grid li{list-style:none;margin-bottom:11px;}
.foot-grid a:hover{color:var(--ice);}
.foot-brand{display:flex;align-items:center;gap:14px;margin-bottom:18px;}
.foot-brand svg{width:50px;height:auto;}
.copyright{border-top:1px solid rgba(255,255,255,.09);padding-top:26px;text-align:center;font-size:13.5px;color:#54718C;letter-spacing:1.5px;}

/* ═══ RWD ═══ */
@media (max-width:960px){
  nav ul{display:none;}
  body{font-size:16px;}
  .hero h1{font-size:40px;}
  .hero-inner{padding-bottom:220px;}
  .hero-badges .wrap{grid-template-columns:repeat(2,1fr);}
  .hb{border:none !important;padding:16px 10px;}
  .svc-grid{grid-template-columns:1fr;}
  .prod-grid{grid-template-columns:1fr;grid-auto-rows:220px;}
  .prod{grid-column:span 1 !important;}
  .cases-strip{grid-template-columns:1fr;}
  .case:nth-child(1){grid-row:span 1;}
  .cert-grid{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr;}
  .sec-head h2{font-size:32px;}
  .sec-head .ghost{font-size:64px;top:-30px;}
}
/* ═══ 內頁樣式 ═══ */
.page-hero{position:relative;padding:88px 0 72px;color:#fff;background:linear-gradient(115deg,rgba(8,29,51,.92) 40%,rgba(14,111,184,.55)),url('hero.jpg') center/cover;}
.page-hero .tag{color:var(--ice-soft);font-weight:700;font-size:14px;letter-spacing:5px;font-family:'Archivo',sans-serif;}
.page-hero h1{font-size:46px;font-weight:900;letter-spacing:4px;margin-top:8px;}
.page-hero p{color:#BFD8E9;font-size:18px;margin-top:12px;max-width:640px;letter-spacing:1px;}
.crumb{font-size:14px;color:#8FA9BE;margin-bottom:18px;letter-spacing:1px;}
.crumb a:hover{color:var(--ice);}
.feat-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:56px 0;}
.feat-row img{border-radius:18px;box-shadow:0 12px 36px rgba(8,29,51,.15);width:100%;object-fit:cover;max-height:420px;}
.feat-row h3{font-size:30px;font-weight:900;color:var(--navy);letter-spacing:2px;margin-bottom:16px;}
.feat-row p{color:var(--muted);font-size:17px;margin-bottom:12px;}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.chip{background:var(--frost);border:1px solid #CBE6F4;color:var(--blue);font-size:14.5px;font-weight:700;padding:8px 18px;border-radius:99px;letter-spacing:1px;}
.spec-table{width:100%;border-collapse:collapse;margin-top:20px;font-size:16px;}
.spec-table th{background:var(--navy);color:#fff;padding:13px 18px;text-align:left;letter-spacing:2px;font-weight:700;}
.spec-table td{padding:12px 18px;border-bottom:1px solid #E3EEF5;color:var(--text);}
.spec-table tr:nth-child(even) td{background:var(--frost);}
.tcard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.tcard{background:#fff;border:1px solid #E3EEF5;border-left:5px solid var(--ice);border-radius:14px;padding:26px 26px;box-shadow:0 4px 16px rgba(8,29,51,.06);transition:.22s;}
.tcard:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(8,29,51,.14);border-left-color:var(--blue);}
.tcard small{color:var(--blue);font-weight:700;font-size:12.5px;letter-spacing:2.5px;font-family:'Archivo',sans-serif;}
.tcard b{display:block;font-size:18.5px;color:var(--navy);letter-spacing:1px;margin:6px 0 8px;font-weight:800;}
.tcard p{font-size:15px;color:var(--muted);}
.doc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.doc{background:#fff;border-radius:14px;padding:14px;box-shadow:0 6px 20px rgba(8,29,51,.1);}
.doc img{width:100%;border-radius:8px;}
.doc figcaption{text-align:center;font-size:14.5px;font-weight:700;color:var(--navy);padding:12px 4px 6px;letter-spacing:1px;}
.stat-band{background:var(--navy);border-radius:20px;padding:8px 0;margin:40px 0 8px;}
.stat-band .stats-grid{grid-template-columns:repeat(4,1fr);}
@media (max-width:960px){
  .page-hero h1{font-size:32px;}
  .feat-row{grid-template-columns:1fr;gap:28px;padding:36px 0;}
  .tcard-grid{grid-template-columns:1fr;}
  .doc-grid{grid-template-columns:repeat(2,1fr);}
}