:root{
  --g1:#0f1f16;--g2:#1a3021;--g3:#2d5a3d;--g4:#3d7a52;
  --gold:#c8a060;--gold2:#e8d5a0;
  --cream:#f5f0e6;--cream2:#ede8dc;--white:#fdfcf8;
  --text:#2a2a2a;--muted:#6a6a6a;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'Noto Sans TC',sans-serif;background:var(--white);color:var(--text);overflow-x:hidden;}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:200;display:flex;align-items:center;justify-content:space-between;padding:18px 5%;background:rgba(15,31,22,.97);backdrop-filter:blur(16px);border-bottom:1px solid rgba(200,160,96,.18);}
.logo-wrap{display:flex;flex-direction:column;gap:2px;}
.logo-main{font-family:'Noto Serif TC',serif;font-size:15px;font-weight:700;color:var(--gold2);letter-spacing:3px;}
.logo-sub{font-family:'Cormorant Garamond',serif;font-size:10px;letter-spacing:6px;color:rgba(200,160,96,.55);}
.nav-links{display:flex;align-items:center;gap:36px;list-style:none;}
.nav-links a{font-size:12.5px;letter-spacing:2px;color:rgba(245,240,230,.75);text-decoration:none;font-weight:300;transition:color .25s;}
.nav-links a:hover,.nav-links a.active{color:var(--gold);}
.nav-btn{border:1px solid var(--gold);color:var(--gold)!important;padding:8px 22px;font-size:11.5px!important;letter-spacing:2px;transition:all .25s!important;}
.nav-btn:hover{background:var(--gold)!important;color:var(--g2)!important;}

/* PAGE HERO */
.page-hero{padding:130px 7% 64px;background:var(--g2);position:relative;overflow:hidden;}
.page-hero::before{content:'SERVICE';position:absolute;right:-20px;bottom:-30px;font-family:'Cormorant Garamond',serif;font-size:160px;font-weight:600;color:rgba(200,160,96,.05);pointer-events:none;white-space:nowrap;}
.breadcrumb{display:flex;align-items:center;gap:10px;margin-bottom:20px;}
.breadcrumb span{font-size:11px;letter-spacing:2px;color:rgba(200,160,96,.5);font-family:'Cormorant Garamond',serif;}
.breadcrumb .sep{color:rgba(200,160,96,.25);}
.breadcrumb .current{color:var(--gold);}
.eyebrow{display:flex;align-items:center;gap:14px;margin-bottom:18px;}
.eyebrow-line{width:32px;height:1px;background:var(--gold);}
.eyebrow span{font-family:'Cormorant Garamond',serif;font-size:11px;letter-spacing:6px;color:var(--gold);}
.page-title{font-family:'Noto Serif TC',serif;font-size:clamp(26px,3.5vw,44px);font-weight:700;color:#f0ece2;letter-spacing:4px;margin-bottom:14px;}
.page-desc{font-size:13.5px;line-height:2;color:rgba(240,235,220,.6);font-weight:300;max-width:580px;}

/* SERVICE ANCHOR TABS */
.service-anchor{
  background:var(--g1);
  padding:0 7%;
  display:flex;
  border-bottom:1px solid rgba(200,160,96,.1);
  position:sticky;top:57px;z-index:100;
}
.service-anchor-tab{
  padding:18px 28px;
  font-size:12px;letter-spacing:2px;
  color:rgba(240,235,220,.5);font-weight:300;
  cursor:pointer;border-bottom:2px solid transparent;
  transition:all .25s;font-family:'Noto Sans TC',sans-serif;
  white-space:nowrap;
}
.service-anchor-tab:hover{color:rgba(240,235,220,.8);}
.service-anchor-tab.active{color:var(--gold);border-bottom-color:var(--gold);}

/* SECTION COMMON */
.sec{padding:80px 7%;}
.sec-alt{background:var(--cream);}
.sec-dark{background:var(--g2);}
.sec-darker{background:var(--g1);}
.label-row{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.label-line{width:32px;height:1px;background:var(--gold);}
.label-text{font-family:'Cormorant Garamond',serif;font-size:11px;letter-spacing:6px;color:var(--gold);}
.sec-title{font-family:'Noto Serif TC',serif;font-size:clamp(22px,2.8vw,36px);font-weight:700;color:var(--g2);letter-spacing:3px;margin-bottom:12px;}
.sec-title-light{color:var(--cream);}
.sec-desc{font-size:13.5px;line-height:2;color:var(--muted);font-weight:300;max-width:600px;margin-bottom:52px;}
.sec-desc-light{color:rgba(240,235,220,.55);}

/* SERVICE INTRO CARDS */
.service-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;margin-bottom:80px;}
.service-intro-card{
  padding:40px 32px;
  background:var(--white);
  border:1px solid rgba(26,48,33,.1);
  position:relative;overflow:hidden;
  transition:all .3s;cursor:pointer;
}
.service-intro-card::before{
  content:'';position:absolute;top:0;left:0;right:0;
  height:3px;background:var(--g2);
  transform:scaleX(0);transform-origin:left;
  transition:transform .35s;
}
.service-intro-card:hover{background:var(--cream);}
.service-intro-card:hover::before{transform:scaleX(1);}
.service-intro-card.primary{border-color:rgba(200,160,96,.3);}
.service-intro-card.primary::before{transform:scaleX(1);background:var(--gold);}
.sic-badge{display:inline-block;font-size:9px;letter-spacing:3px;border:1px solid rgba(26,48,33,.2);color:var(--g3);padding:3px 10px;margin-bottom:20px;font-family:'Cormorant Garamond',serif;}
.sic-badge.gold{border-color:rgba(200,160,96,.4);color:var(--gold);}
.sic-num{font-family:'Cormorant Garamond',serif;font-size:56px;font-weight:400;color:rgba(26,48,33,.07);line-height:1;margin-bottom:10px;}
.sic-title{font-family:'Noto Serif TC',serif;font-size:18px;font-weight:600;color:var(--g2);letter-spacing:2px;margin-bottom:12px;}
.sic-desc{font-size:13px;line-height:2;color:var(--muted);font-weight:300;margin-bottom:20px;}
.sic-tags{display:flex;flex-wrap:wrap;gap:6px;}
.sic-tag{font-size:10px;letter-spacing:1px;color:var(--g3);border:1px solid rgba(45,90,61,.2);padding:3px 10px;}
.sic-link{display:flex;align-items:center;gap:6px;margin-top:16px;font-size:11px;letter-spacing:2px;color:var(--g3);font-family:'Cormorant Garamond',serif;cursor:pointer;transition:gap .2s;}
.sic-link:hover{gap:10px;}

/* ── FLOW SECTION ── */
.flow-block{margin-bottom:72px;}
.flow-header{
  display:flex;align-items:center;gap:24px;
  margin-bottom:40px;padding-bottom:20px;
  border-bottom:1px solid rgba(26,48,33,.1);
}
.flow-icon{
  width:56px;height:56px;
  background:var(--g2);border-radius:2px;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;flex-shrink:0;
}
.flow-header-text h3{font-family:'Noto Serif TC',serif;font-size:20px;font-weight:600;color:var(--g2);letter-spacing:3px;margin-bottom:4px;}
.flow-header-text p{font-size:12.5px;color:var(--muted);font-weight:300;letter-spacing:1px;}

/* Horizontal flow steps */
.flow-steps{
  display:grid;
  position:relative;
}
.flow-steps.steps-5{grid-template-columns:repeat(5,1fr);}
.flow-steps.steps-6{grid-template-columns:repeat(6,1fr);}
.flow-steps.steps-7{grid-template-columns:repeat(7,1fr);}

.flow-steps::before{
  content:'';
  position:absolute;top:32px;left:5%;right:5%;
  height:1px;
  background:linear-gradient(to right,var(--g2),rgba(26,48,33,.15));
}

.flow-step{
  display:flex;flex-direction:column;align-items:center;
  text-align:center;padding:0 8px;
  position:relative;
}

.flow-circle{
  width:64px;height:64px;
  border:2px solid var(--g2);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--white);
  position:relative;z-index:1;
  margin-bottom:16px;
  font-size:18px;
  transition:all .3s;
}
.flow-circle:hover{background:var(--g2);}

.flow-step.payment .flow-circle{
  border-color:var(--gold);
  background:rgba(200,160,96,.08);
}
.flow-step.payment .flow-circle:hover{background:var(--gold);}

.flow-step-num{font-family:'Cormorant Garamond',serif;font-size:9px;letter-spacing:3px;color:var(--gold);margin-bottom:6px;}
.flow-step-title{font-family:'Noto Serif TC',serif;font-size:13px;font-weight:600;color:var(--g2);letter-spacing:1px;margin-bottom:6px;}
.flow-step-desc{font-size:11px;line-height:1.8;color:var(--muted);font-weight:300;}

/* Payment badge */
.payment-badge{
  display:inline-block;
  background:var(--gold);color:var(--g2);
  font-size:9px;letter-spacing:1px;font-weight:600;
  padding:2px 8px;margin-top:6px;
  font-family:'Cormorant Garamond',serif;
}

/* Flow notes */
.flow-notes{
  display:flex;gap:16px;flex-wrap:wrap;
  margin-top:24px;padding:18px 22px;
  background:var(--cream2);
  border-left:3px solid var(--g3);
}
.flow-note-item{
  display:flex;align-items:flex-start;gap:8px;
  font-size:12px;color:var(--muted);font-weight:300;line-height:1.8;
}
.flow-note-item::before{content:'※';color:var(--g3);flex-shrink:0;font-size:11px;}

/* ── EQUIPMENT FLOW ── */
.equip-flow{
  display:grid;grid-template-columns:repeat(5,1fr);
  gap:12px;
  margin-top:48px;
}
.equip-step{
  background:var(--white);
  border:1px solid rgba(26,48,33,.1);
  overflow:hidden;
  transition:all .3s;
  position:relative;
}
.equip-step:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(26,48,33,.1);}
.equip-step-num{
  background:var(--g2);
  padding:10px 14px;
  font-family:'Cormorant Garamond',serif;
  font-size:11px;letter-spacing:3px;color:rgba(200,160,96,.7);
}
.equip-step-body{padding:16px 14px;}
.equip-step-icon{font-size:24px;margin-bottom:10px;}
.equip-step-title{font-family:'Noto Serif TC',serif;font-size:13px;font-weight:600;color:var(--g2);letter-spacing:1px;margin-bottom:6px;}
.equip-step-desc{font-size:11px;line-height:1.8;color:var(--muted);font-weight:300;}
.equip-step-spec{
  font-size:10px;letter-spacing:1px;
  color:var(--gold);
  border:1px solid rgba(200,160,96,.3);
  padding:3px 8px;
  display:inline-block;margin-top:8px;
  font-family:'Cormorant Garamond',serif;
}

/* Arrow between equip steps */
.equip-flow-wrap{position:relative;}
.equip-flow-wrap::before{
  content:'';
  position:absolute;top:44px;left:calc(20% - 6px);
  right:calc(20% - 6px);
  height:1px;
  background:repeating-linear-gradient(90deg,var(--g3) 0,var(--g3) 6px,transparent 6px,transparent 12px);
  z-index:0;
}

/* ── WARRANTY ── */
.warranty-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:12px;margin-top:48px;
}
.warranty-card{
  padding:24px 20px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(200,160,96,.15);
  text-align:center;
}
.warranty-icon{font-size:28px;margin-bottom:12px;}
.warranty-title{font-family:'Noto Serif TC',serif;font-size:13px;font-weight:600;color:var(--gold2);letter-spacing:1px;margin-bottom:8px;}
.warranty-desc{font-size:11.5px;line-height:1.9;color:rgba(240,235,220,.55);font-weight:300;}

/* ── TRUST BADGES (residential) ── */
.trust-badges{
  display:flex;align-items:center;justify-content:center;
  gap:32px;flex-wrap:wrap;
  padding:28px 40px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(200,160,96,.15);
  margin-top:32px;
}
.trust-badge-item{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  opacity:.8;transition:opacity .25s;cursor:default;
}
.trust-badge-item:hover{opacity:1;}
.trust-badge-logo{
  width:80px;height:40px;
  border:1px solid rgba(200,160,96,.3);
  display:flex;align-items:center;justify-content:center;
  font-family:'Cormorant Garamond',serif;
  font-size:11px;letter-spacing:2px;color:var(--gold2);
  font-weight:600;
}
.trust-badge-name{font-size:10px;letter-spacing:1px;color:rgba(240,235,220,.5);font-weight:300;}
.trust-badge-divider{width:1px;height:40px;background:rgba(200,160,96,.15);}
.trust-badges-note{
  width:100%;text-align:center;
  font-size:11.5px;color:rgba(200,160,96,.5);
  font-weight:300;letter-spacing:.5px;
  border-top:1px solid rgba(200,160,96,.1);
  padding-top:14px;margin-top:4px;
  font-family:'Cormorant Garamond',serif;
}

/* CTA */
.cta-strip{background:var(--cream);padding:64px 7%;text-align:center;}
.cta-strip h2{font-family:'Noto Serif TC',serif;font-size:clamp(22px,3vw,36px);font-weight:700;color:var(--g2);letter-spacing:4px;margin-bottom:16px;}
.cta-strip p{font-size:14px;color:var(--muted);line-height:2;font-weight:300;max-width:440px;margin:0 auto 36px;}
.cta-btns{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.btn-dark{background:var(--g2);color:var(--cream);padding:15px 44px;font-size:12.5px;letter-spacing:3px;font-weight:500;border:none;cursor:pointer;font-family:'Noto Sans TC',sans-serif;text-decoration:none;display:inline-block;transition:all .3s;}
.btn-dark:hover{background:var(--g3);transform:translateY(-2px);}
.btn-out{background:transparent;color:var(--g2);border:1.5px solid var(--g2);padding:15px 44px;font-size:12.5px;letter-spacing:3px;cursor:pointer;font-family:'Noto Sans TC',sans-serif;text-decoration:none;display:inline-block;transition:all .3s;}
.btn-out:hover{background:var(--g2);color:var(--cream);}

/* Footer */
footer{background:var(--g1);padding:40px 7% 28px;border-top:1px solid rgba(200,160,96,.1);}
.footer-bottom{display:flex;justify-content:space-between;}
.footer-bottom p{font-size:10.5px;letter-spacing:2px;color:rgba(240,235,220,.2);font-family:'Cormorant Garamond',serif;}

@media(max-width:768px){
  .nav-links{display:none;}
  .service-cards{grid-template-columns:1fr;}
  .flow-steps{grid-template-columns:1fr 1fr;}
  .flow-steps::before{display:none;}
  .equip-flow{grid-template-columns:1fr 1fr;}
  .equip-flow-wrap::before{display:none;}
  .warranty-row{grid-template-columns:1fr 1fr;}
  .service-anchor{overflow-x:auto;}
}