: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:120px 7% 60px;
  background:var(--g2);
  position:relative;overflow:hidden;
}
.page-hero::before{
  content:'COLOR';
  position:absolute;right:-20px;bottom:-30px;
  font-family:'Cormorant Garamond',serif;font-size:180px;font-weight:600;
  color:rgba(200,160,96,.05);pointer-events:none;
}
.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:620px;}

/* IMPORTANT NOTICE */
.notice-bar{
  background:rgba(200,160,96,.12);
  border:1px solid rgba(200,160,96,.3);
  border-left:4px solid var(--gold);
  padding:16px 24px;
  display:flex;align-items:flex-start;gap:14px;
  margin-top:28px;
  max-width:780px;
}
.notice-icon{font-size:18px;flex-shrink:0;margin-top:1px;}
.notice-text{font-size:13px;line-height:1.9;color:var(--gold2);font-weight:300;}
.notice-text strong{font-weight:600;color:var(--gold2);}

/* MAIN LAYOUT */
.color-page{padding:0 7% 80px;background:var(--white);}

/* STEP 1: REGION TABS */
.step-block{padding-top:52px;}
.step-label{
  display:flex;align-items:center;gap:12px;
  margin-bottom:20px;
}
.step-num{
  width:28px;height:28px;
  background:var(--g2);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:'Cormorant Garamond',serif;
  font-size:13px;color:var(--gold);font-weight:600;
  flex-shrink:0;
}
.step-title{font-family:'Noto Serif TC',serif;font-size:15px;font-weight:600;color:var(--g2);letter-spacing:2px;}
.step-hint{font-size:11.5px;color:var(--muted);font-weight:300;letter-spacing:.5px;margin-left:4px;}

/* Region tabs */
.region-tabs{display:flex;gap:0;border:1px solid rgba(26,48,33,.15);overflow:hidden;max-width:500px;}
.region-tab{
  flex:1;padding:14px 20px;
  text-align:center;
  font-size:13px;letter-spacing:2px;
  color:var(--muted);font-weight:300;
  cursor:pointer;
  border-right:1px solid rgba(26,48,33,.12);
  transition:all .25s;
  position:relative;
  font-family:'Noto Sans TC',sans-serif;
  background:var(--white);
}
.region-tab:last-child{border-right:none;}
.region-tab:hover{background:var(--cream);color:var(--g2);}
.region-tab.active{
  background:var(--g2);color:var(--gold2);font-weight:500;
}
.region-tab.active::after{
  content:'';
  position:absolute;bottom:-1px;left:50%;transform:translateX(-50%);
  width:0;height:0;
  border-left:8px solid transparent;
  border-right:8px solid transparent;
  border-top:8px solid var(--g2);
}

/* STEP 2: SERIES CARDS */
.series-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:14px;
  margin-top:4px;
}
.series-card{
  border:1.5px solid rgba(26,48,33,.1);
  padding:24px 22px;
  cursor:pointer;
  transition:all .3s;
  position:relative;
  overflow:hidden;
  background:var(--white);
}
.series-card::before{
  content:'';
  position:absolute;left:0;top:0;bottom:0;
  width:4px;background:var(--g2);
  transform:scaleY(0);transform-origin:bottom;
  transition:transform .3s;
}
.series-card:hover{border-color:rgba(26,48,33,.3);background:var(--cream);}
.series-card:hover::before{transform:scaleY(1);}
.series-card.selected{
  border-color:var(--g2);
  background:var(--cream);
}
.series-card.selected::before{transform:scaleY(1);}

.series-card-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:14px;}
.series-name{font-family:'Noto Serif TC',serif;font-size:16px;font-weight:600;color:var(--g2);letter-spacing:2px;}
.series-region-badge{
  font-size:9px;letter-spacing:2px;
  border:1px solid rgba(45,90,61,.25);
  color:var(--g3);padding:3px 10px;
  font-family:'Cormorant Garamond',serif;
  white-space:nowrap;
}
.series-region-badge.all{
  border-color:rgba(200,160,96,.4);
  color:var(--gold);
}
.series-preview{display:flex;gap:4px;margin-bottom:12px;}
.preview-dot{width:20px;height:20px;border-radius:2px;flex-shrink:0;}
.series-count{font-size:11px;color:var(--muted);font-weight:300;letter-spacing:1px;}
.series-select-hint{
  display:flex;align-items:center;gap:6px;
  margin-top:12px;
  font-size:11px;letter-spacing:1px;
  color:var(--g3);font-weight:400;
  opacity:0;transition:opacity .25s;
}
.series-card:hover .series-select-hint,
.series-card.selected .series-select-hint{opacity:1;}
.series-check{
  width:16px;height:16px;
  border:1.5px solid var(--g3);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:9px;flex-shrink:0;
}
.series-card.selected .series-check{
  background:var(--g2);border-color:var(--g2);color:var(--gold2);
}

/* STEP 3: SWATCH AREA */
.swatch-area{
  margin-top:4px;
  border:1.5px solid var(--g2);
  overflow:hidden;
  animation:slideDown .3s ease;
}
@keyframes slideDown{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}

.swatch-area-header{
  background:var(--g2);
  padding:16px 24px;
  display:flex;align-items:center;justify-content:space-between;
}
.swatch-area-title{
  font-family:'Noto Serif TC',serif;
  font-size:15px;font-weight:600;
  color:var(--gold2);letter-spacing:3px;
}
.swatch-area-meta{
  font-size:11px;letter-spacing:2px;
  color:rgba(200,160,96,.6);
  font-family:'Cormorant Garamond',serif;
}

/* Filter tabs inside swatch area */
.swatch-filter{
  display:flex;gap:0;
  border-bottom:1px solid rgba(26,48,33,.1);
  background:var(--cream);
  padding:0 24px;
}
.swatch-filter-tab{
  padding:10px 16px;
  font-size:11px;letter-spacing:2px;
  color:var(--muted);font-weight:300;
  cursor:pointer;
  border-bottom:2px solid transparent;
  transition:all .2s;
  font-family:'Cormorant Garamond',serif;
}
.swatch-filter-tab:hover{color:var(--g2);}
.swatch-filter-tab.active{color:var(--g2);border-bottom-color:var(--g2);font-weight:600;}

.swatch-body{padding:24px;}
.swatch-grid{
  display:grid;
  grid-template-columns:repeat(8,1fr);
  gap:8px;
}
.swatch{
  cursor:pointer;
  border:2px solid transparent;
  transition:all .2s;
  position:relative;
}
.swatch:hover{border-color:var(--g3);transform:scale(1.06);z-index:1;}
.swatch.picked{border-color:var(--g2);}
.swatch.picked::after{
  content:'✓';
  position:absolute;top:3px;right:3px;
  width:16px;height:16px;
  background:var(--g2);
  color:var(--gold2);
  font-size:9px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  font-family:sans-serif;
}
.swatch-color{aspect-ratio:1;}
.swatch-info{padding:5px 6px;background:rgba(26,48,33,.04);}
.swatch-name{font-size:8.5px;letter-spacing:.5px;color:var(--text);display:block;line-height:1.3;}
.swatch-series-label{font-size:7.5px;color:var(--muted);font-family:'Cormorant Garamond',serif;}

/* INQUIRY PANEL */
.inquiry-panel{
  position:fixed;
  bottom:24px;right:24px;
  z-index:100;
  background:var(--g2);
  border:1px solid rgba(200,160,96,.3);
  padding:20px 24px;
  min-width:280px;
  box-shadow:0 20px 60px rgba(15,31,22,.4);
  transition:all .3s;
  transform:translateY(120%);
  opacity:0;
}
.inquiry-panel.visible{transform:translateY(0);opacity:1;}
.inquiry-panel-title{
  font-family:'Cormorant Garamond',serif;
  font-size:11px;letter-spacing:4px;
  color:var(--gold);margin-bottom:14px;
}
.inquiry-items{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;max-height:160px;overflow-y:auto;}
.inquiry-item{
  display:flex;align-items:center;gap:8px;
  font-size:11.5px;color:rgba(240,235,220,.75);font-weight:300;
}
.inquiry-item-dot{width:14px;height:14px;border-radius:1px;flex-shrink:0;}
.inquiry-item-remove{
  margin-left:auto;font-size:10px;
  color:rgba(200,160,96,.4);cursor:pointer;
  transition:color .2s;flex-shrink:0;
}
.inquiry-item-remove:hover{color:var(--gold);}
.inquiry-panel-info{
  font-size:10.5px;color:rgba(200,160,96,.5);
  border-top:1px solid rgba(200,160,96,.1);
  padding-top:10px;margin-bottom:12px;
  font-family:'Cormorant Garamond',serif;letter-spacing:1px;
}
.inquiry-btn{
  width:100%;padding:12px;
  background:var(--gold);color:var(--g2);
  border:none;cursor:pointer;
  font-size:12px;letter-spacing:3px;font-weight:600;
  font-family:'Noto Sans TC',sans-serif;
  transition:all .25s;
}
.inquiry-btn:hover{background:var(--gold2);}
.inquiry-count{
  position:absolute;top:-8px;right:-8px;
  width:22px;height:22px;
  background:var(--gold);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:600;color:var(--g2);
  font-family:'Cormorant Garamond',serif;
}

/* Floating inquiry trigger */
.inquiry-trigger{
  position:fixed;bottom:24px;right:24px;z-index:99;
  background:var(--g2);
  border:1px solid rgba(200,160,96,.3);
  padding:14px 20px;
  display:flex;align-items:center;gap:10px;
  cursor:pointer;
  box-shadow:0 8px 30px rgba(15,31,22,.3);
  transition:all .3s;
}
.inquiry-trigger:hover{background:var(--g3);}
.inquiry-trigger span{font-size:12px;letter-spacing:2px;color:rgba(240,235,220,.85);font-weight:300;}

/* Empty state */
.empty-state{
  padding:60px 24px;
  text-align:center;
}
.empty-icon{font-size:40px;margin-bottom:16px;opacity:.4;}
.empty-text{font-size:13px;color:var(--muted);font-weight:300;line-height:2;}

/* CTA at bottom */
.page-cta{
  background:var(--cream2);
  padding:52px 7%;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
  border-top:1px solid rgba(26,48,33,.08);
}
.page-cta p{font-size:14px;color:var(--muted);font-weight:300;line-height:2;}
.btn-dark{background:var(--g2);color:var(--cream);padding:14px 40px;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);}

/* 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;align-items:center;}
.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;}
  .series-grid{grid-template-columns:1fr;}
  .swatch-grid{grid-template-columns:repeat(4,1fr);}
  .region-tabs{max-width:100%;}
  .inquiry-panel,.inquiry-trigger{right:12px;bottom:12px;}
}