:root{color-scheme:light;--ink:#1c2a3b;--muted:#46566a;--line:#d4dce7;--accent:#204b80;--paper:#fff;--tint:#e8f0fa;--canvas:#f4f6fa;--field:#f1f5fa;--accent-line:#c5d4e8;font-family:system-ui,-apple-system,"Noto Sans KR",sans-serif;color:var(--ink);background:var(--canvas)}
*{box-sizing:border-box}
body{margin:0}
main{width:min(1060px,100% - 72px);margin:0 auto}
.intro{padding:16px 0 12px}
h1{font-size:clamp(2.2rem,6vw,3.65rem);letter-spacing:-.075em;line-height:1.12;margin:28px 0 8px}
.brand{display:flex;align-items:center;gap:8px;margin:0;color:var(--accent);font-size:1rem;font-weight:800;letter-spacing:-.025em}
.brand img{border-radius:6px}
:root,.groups,.table-wrap{scrollbar-width:none}
.market{background:var(--paper);border:1px solid var(--line);border-radius:19px;overflow:hidden}
.toolbar,.results-head,.results-foot{padding:17px 25px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.toolbar{border-bottom:1px solid var(--line)}
button,input,select{font:inherit}
button,select{cursor:pointer}
button{border:0;background:transparent;color:var(--muted);white-space:nowrap}
button:focus-visible,select:focus-visible,input:focus-visible,a:focus-visible,.table-wrap:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.segmented{display:inline-flex;gap:3px;padding:4px;border-radius:11px;background:var(--field)}
.segmented button{min-height:38px;padding:0 20px;border-radius:8px;font-size:.88rem;font-weight:700}
.segmented [aria-pressed=true]{background:var(--accent);color:white}
.period,.groups{display:flex;gap:8px;align-items:center}
.filters{display:grid;gap:11px;padding:0 25px 17px}
.groups{flex-wrap:wrap}
.period select{background:white;color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:8px;min-height:40px}
h2{font-size:1.26rem;margin:0;letter-spacing:-.045em}
#date-note{margin:6px 0 0;min-height:1.15em;color:var(--muted);font-size:.83rem}
.groups button{border:1px solid var(--line);border-radius:9px;min-height:40px;padding:0 11px;font-weight:650;font-size:.84rem}
.search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:9px;padding:0 12px;color:var(--muted);min-height:44px;max-width:390px}
.search input{flex:1;min-width:0;border:0;padding:8px 0;background:transparent;color:var(--ink);font-size:1rem}
.search:focus-within{border-color:var(--accent)}
.search-box{position:relative;min-width:0}
#search-clear{flex:none;width:44px;height:44px;margin-right:-8px;padding:0;font-size:1.5rem}
.search-suggestions{
  position:absolute;inset:calc(100% + 4px) 0 auto;z-index:1;padding:4px;
  border:1px solid var(--line);border-radius:12px;background:var(--paper);box-shadow:0 5px 15px #20385226
}
.search-suggestions button{display:block;width:100%;padding:8px 10px;text-align:left;white-space:normal;color:var(--ink)}
.search-suggestions button:hover,.search-suggestions button:focus{background:var(--field);border-radius:8px}
.search-suggestions span{display:block;color:var(--muted);font-size:.8rem}
.table-wrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th,td{padding:14px 13px;text-align:left;border-bottom:1px solid #e9edf3}
th:first-child,td:first-child{padding-left:25px}
th:last-child,td:last-child{padding-right:25px}
thead th{font-size:.78rem;color:var(--muted);background:var(--field);white-space:nowrap}
.category-heading{padding-block:9px;background:var(--tint);color:var(--accent);font-size:.82rem}
tr:hover td{background:#f7f9fc}
.spec{display:block;font-size:.79rem;color:var(--muted);margin-top:4px}
.money{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}
.primary{font-weight:750;color:var(--accent)}
.status{padding:28px 25px 12px;color:var(--muted)}
.retry{border:1px solid var(--line);border-radius:8px;margin:0 25px 16px;padding:9px 12px}
.results-foot{min-height:52px;font-size:.81rem;color:var(--muted)}
a{color:var(--accent);text-underline-offset:3px}
footer{padding:20px 0 32px;color:var(--muted);font-size:.79rem}
[hidden]{display:none!important}
@media(max-width:680px){
  main{width:calc(100% - 28px)}
  .toolbar,.results-head,.results-foot{padding:13px}
  .toolbar,.results-head{flex-wrap:wrap;gap:11px}
  .results-head{align-items:flex-start;flex-direction:column}
  .segmented button{padding:0 13px}
  .filters{padding:0 13px 13px}
  .search{max-width:none}
  th,td{padding:11px 6px}th:first-child,td:first-child{padding-left:13px}th:last-child,td:last-child{padding-right:13px}
  thead th{white-space:normal}table{font-size:.83rem}.spec{font-size:.72rem}
}
.item-link{padding:0;color:var(--ink);font-weight:700;min-height:30px;text-align:left}
.item-link:hover{text-decoration:underline;text-underline-offset:3px}
.history{padding-top:28px}
.back{padding:10px 0;color:var(--accent);font-weight:700}
.history-intro{padding:12px 0 18px}
.history-category{font-weight:700;color:var(--accent)}
.history-intro h1{margin:5px 0;font-size:clamp(2rem,5vw,3rem)}
.history-intro p{margin:5px 0;color:var(--muted)}
#history-price{display:inline-block;margin-top:12px;font-size:1.7rem;color:var(--accent)}
#history-status{color:var(--muted);font-size:.85rem}
#history .retry{margin-left:0}
.history-card{border:1px solid var(--line);border-radius:15px;padding:19px;background:var(--paper)}
.history-card .price-chart{max-width:760px;margin-inline:auto}
.history-card p{margin:5px 0;color:var(--muted);font-size:.85rem}
.price-chart{display:block;width:100%;margin-top:10px;overflow:visible;cursor:pointer;touch-action:manipulation}
.chart-guide{stroke:var(--accent);stroke-width:1;stroke-dasharray:3 3}
.history-card .chart-readout{min-height:1.5em;margin:0 0 10px}
.price-chart text{font:12px system-ui,sans-serif;fill:var(--muted)}
.chart-grid{stroke:var(--line);stroke-width:1}
.chart-line{stroke:var(--accent);stroke-width:2.5}
.chart-point{fill:var(--accent);stroke:white;stroke-width:1.5}
.price-list-toggle{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  width:100%;min-height:44px;margin-top:6px;padding:8px 12px;border:1px solid var(--line);border-radius:10px;
  background:var(--field);color:var(--accent);font-size:.85rem;font-weight:700
}
.price-list-toggle::after{
  content:"";width:7px;height:7px;margin-right:4px;
  border:solid currentColor;border-width:0 2px 2px 0;transform:translateY(-2px) rotate(45deg)
}
.price-list-toggle[aria-expanded=true]::after{transform:translateY(2px) rotate(225deg)}
.history-prices{margin-top:8px}

/* Catalogue and detail layout */
main{width:min(1040px,100% - 64px)}
.market{border-radius:24px;box-shadow:0 3px 14px #20385208}
.filters{padding:14px 24px 12px;gap:10px}
.search{max-width:none;min-height:52px;border-radius:15px;background:var(--field);gap:11px;padding:0 14px}
.search svg{flex:none;color:var(--accent)}
.groups{gap:7px}
.groups button{min-height:44px;padding:4px 12px;border:0;border-radius:0}
.groups [aria-current=location]{box-shadow:inset 0 -3px var(--accent);color:var(--accent);font-weight:800}
.results-head{padding:14px 24px 12px;border-top:1px solid var(--line)}
#date-note{margin-top:4px;min-height:0}
thead th{background:#f7f9fc}
.category-heading{background:var(--tint);font-weight:800}
.primary{color:var(--ink);font-size:1.08em;font-weight:800}
.price-row{cursor:pointer}
.price-row .primary::after{content:"";display:inline-block;width:5px;height:5px;margin-inline:7px 2px;border:solid var(--muted);border-width:1.5px 1.5px 0 0;transform:translateY(-2px) rotate(45deg)}
.price-row:focus-within td,.price-row:active td{background:var(--field)}
.item-link{white-space:normal;overflow-wrap:anywhere;min-height:44px;padding:2px 0}
.spec{margin-top:0}
.history{padding-top:22px}
.back{min-height:44px}
.history-intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(190px,0.52fr);gap:4px 24px;align-items:center;
  margin-top:8px;padding:22px 24px;border:1px solid var(--accent-line);border-radius:24px;background:var(--tint)}
.history-intro h1{font-size:clamp(1.75rem,4.1vw,2.8rem);overflow-wrap:anywhere;line-height:1.16}
.history-intro h1,.history-intro p{grid-column:1}
.history-intro .history-category{margin:0;color:var(--accent);font-size:.86rem}
.history-variant-controls{grid-column:1/-1;margin-top:6px}
.history-options{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}
.history-source-options{display:flex;flex:0 0 100%;flex-wrap:wrap;gap:6px}
.history-source-options strong{flex-basis:100%;padding-top:4px;color:var(--muted);font-size:.8rem}
.history-options button{min-height:44px;padding:6px 10px;border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--ink);font-size:.85rem;white-space:normal}
.history-options button[aria-pressed=true]{border-color:var(--accent);background:var(--field);color:var(--accent);font-weight:700}
.history-options-toggle{width:100%;min-height:44px;display:flex;align-items:center;justify-content:space-between;
  margin-top:4px;padding-inline:8px;border:0;border-top:1px solid var(--line);
  background:transparent;color:var(--accent);font-weight:700;text-align:left}
.history-options-toggle:hover{background:var(--field)}
.history-options-toggle::after{content:"";width:7px;height:7px;margin-inline:4px;
  border:solid currentColor;border-width:0 2px 2px 0;transform:rotate(45deg)}
.history-options-toggle[aria-expanded=true]::after{transform:rotate(225deg)}
.item-group-title td{padding-block:3px;border-bottom:0}
.variant-link{min-height:38px;padding:2px 0;text-align:left;white-space:normal;color:var(--ink)}
.price-row:has(.variant-link) td{padding-block:5px}
.quote{grid-column:2;grid-row:1/4;border:1px solid var(--accent-line);border-radius:16px;padding:12px 14px;display:grid;justify-items:start;gap:4px}
.quote-amount{display:flex;align-items:baseline;flex-wrap:wrap;gap:0 6px}
.quote-label{font-size:.79rem;font-weight:700;color:var(--muted)}
#history-unit{font-size:.86rem;font-weight:650;color:var(--muted)}
#history-price{margin:0;font-size:clamp(1.8rem,4vw,2.7rem);line-height:1.16;font-variant-numeric:tabular-nums}
#history-origin,#history-spec{color:var(--muted);font-size:.82rem;overflow-wrap:anywhere}
#history-status{margin:13px 0 16px}
#history-status:empty{display:none}
#history-status:empty ~ .history-card{margin-top:12px}
.history-card{padding:17px 20px;border-radius:20px;scroll-margin-top:45px}
.history-card .chart-readout{border-radius:9px;background:var(--field);padding:8px 10px;color:var(--accent);font-weight:650}
#history-sources{padding-top:14px}
@media(max-width:680px){
  main{width:calc(100% - 28px)}
  .intro{padding:12px 0 10px}
  .filters{padding:10px 13px 8px;gap:6px}
  .groups{
    flex-wrap:nowrap;overflow-x:auto;overscroll-behavior-x:contain;padding:4px 13px;margin-inline:-13px;
    scroll-padding-inline:13px;mask-image:linear-gradient(to right,transparent,#000 10px,#000 calc(100% - 10px),transparent)
  }
  .groups button{flex:none}
  .results-head{padding:11px 13px}
  #table-wrap{overflow:visible}
  #price-table{border-collapse:separate;border-spacing:0}
  #price-table .category-heading{position:sticky;top:var(--filters-height);z-index:2}
  #price-table .money{width:1%}
  #price-table td:first-child{padding-right:12px}
  .spec{overflow-wrap:anywhere}
  .row-date{display:none}
  .item-link{min-height:38px}
  .history{padding-top:10px}
  .history-intro{display:block;padding:14px 15px;background:var(--paper);border-radius:18px}
  .history-intro h1{font-size:clamp(1.4rem,6vw,1.7rem)}
  .history-intro #history-spec{font-size:.86rem}
  .quote{margin-top:10px;background:var(--tint)}
  .history-card{padding:14px}
}

/* Scrolling controls */
.market{overflow:visible}
.filters{
  position:sticky;top:0;z-index:3;background:var(--canvas);isolation:isolate;
  box-shadow:0 2px 0 var(--line)
}
.filters::before{
  content:"";position:absolute;inset:0;z-index:-1;border-radius:24px 24px 0 0;background:var(--paper)
}
.search,.history-card .chart-readout{background:var(--field)}
.category-heading{background:var(--tint)}
.history-intro,.quote{border-color:var(--accent-line)}
.results-head{border-top:0}
.history-toolbar{
  display:grid;grid-template-columns:44px 1fr 44px;align-items:center;
  position:sticky;top:0;z-index:3;background:var(--canvas);border-bottom:1px solid var(--line);
}
.history-toolbar .back{display:grid;place-items:center;padding:0;border-radius:12px}
.history-toolbar .back:hover{background:var(--tint)}
.history-toolbar-title{text-align:center;font-weight:750}
#price-calculator{
  position:absolute;inset:calc(100% + 6px) 0 auto auto;
  z-index:3;width:min(100%,342px);max-height:var(--calculator-height, 60dvh);overflow:auto;overscroll-behavior:contain;
  padding:12px 14px;border:1px solid var(--line);border-radius:16px;background:var(--paper);
  box-shadow:0 8px 24px #1c2a3b30
}
.quote{position:relative;scroll-margin-top:52px;grid-template-columns:minmax(0,1fr) 44px;column-gap:6px}
.quote>.quote-label,.quote>.quote-amount,#history-origin,#history-spec{grid-column:1}
#price-calculator-open{
  grid-column:2;grid-row:1/5;align-self:center;display:grid;place-items:center;
  width:44px;height:44px;padding:0;border-radius:12px;color:var(--accent)
}
#price-calculator-open:hover{background:var(--field)}
.calculator-fields{display:flex;align-items:center;gap:8px}
#price-calculator label{font-weight:700;font-size:.9rem}
.calculator-fields{margin-top:7px}
.calculator-fields input,.calculator-fields select{
  min-height:46px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--field);color:var(--ink)
}
.calculator-fields input{flex:1;min-width:0;font-size:1rem}
#calculator-fixed-unit{color:var(--muted);padding-inline:5px}
.calculator-result{display:grid;gap:3px;margin:12px 0 8px;padding:12px;border-radius:12px;background:var(--tint);color:var(--accent)}
.calculator-result span{font-size:.82rem;font-weight:700}
#calculator-result{font-size:1.4rem;font-weight:800;overflow-wrap:anywhere}
.calculator-keypad{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin:12px 0}
.calculator-keypad button{
  min-height:46px;border-radius:12px;background:var(--field);color:var(--ink);font-size:1.25rem;font-weight:700
}
.calculator-keypad button:active{background:var(--tint)}
.calculator-keypad button[data-key="AC"],.calculator-keypad button[data-key="⌫"]{background:var(--tint);color:var(--accent)}
.calculator-keypad button[data-key="AC"]{grid-column:span 3;font-size:.95rem}
.calculator-keypad button:disabled{opacity:.35}
.period-tabs{
  display:flex;gap:4px;padding:4px;background:var(--paper);
  position:sticky;top:45px;z-index:2;isolation:isolate
}
.period-tabs::before{
  content:"";position:absolute;inset:0;z-index:-1;border-radius:13px;background:var(--field)
}
.period-tabs button{flex:1;min-height:44px;padding:0 8px;border-radius:9px;color:var(--accent);font-weight:700}
.period-tabs button[aria-selected=true]{background:var(--accent);color:var(--paper)}
.chart-header{position:sticky;top:97px;z-index:1;background:var(--paper);padding:10px 0 4px}
.chart-header .price-chart{max-height:34vh}
.history-card .chart-readout{margin-bottom:0}
@media(max-height:460px){
  .chart-header .price-chart{max-height:17vh;margin-top:4px}
  .history-prices th,.history-prices td{padding-block:6px}
}
.price-chart{touch-action:pan-y pinch-zoom}
button:focus-visible,input:focus-visible,a:focus-visible,.price-chart:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px
}
@media(max-width:680px){
  .item-link{min-height:44px}
}