/* CalculatePage: compact, task-focused service UI. */
:root{--ink:#20293b;--muted:#687387;--line:#e3e7ee;--brand:#4263d8;--soft:#f1f5ff;--bg:#f5f6f8;--accent:#4263d8;--accent-soft:#f1f5ff;color-scheme:light}
html{scroll-padding-top:24px}
body{background:var(--bg);font-family:Arial,"Malgun Gothic",system-ui,sans-serif;color:var(--ink);line-height:1.65}
button,input,select,textarea{font-family:inherit}
button,a,input,select,summary{touch-action:manipulation}
a{color:#345ac1}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #7396ff;outline-offset:3px}
[hidden]{display:none!important}
.site-header{max-width:1120px;height:68px;padding:0 24px;background:#fff;border:0}
body:has(.site-header){border-top:3px solid #4263d8}
.site-header:before{content:"";position:absolute;left:0;right:0;top:3px;height:68px;background:#fff;z-index:-1;border-bottom:1px solid var(--line)}
.logo{font-size:22px;font-weight:800;letter-spacing:-1px;white-space:nowrap}
.logo span{color:var(--brand)}
.site-header nav{gap:24px;align-items:center}
.site-header nav a{font-size:14px;font-weight:600;color:#667086}
.site-header nav a:hover{color:var(--brand)}
footer{background:#eef0f4;border-top:1px solid var(--line);padding:28px 20px;color:#7b8493;font-size:12px}
footer a{display:inline-block;font-size:12px;color:#697486;margin:4px 9px}
footer p{margin-top:12px}
.wrap{max-width:1000px;padding:30px 24px;margin:auto}
.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px}
.section-heading h2,.intro h2{font-size:20px;letter-spacing:-.5px;margin:0}
.section-heading p{font-size:13px;margin:0;color:var(--muted)}
.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.calc-card{border:1px solid var(--line);border-radius:8px;padding:20px;background:#fff;box-shadow:none;transition:border-color .15s}
.calc-card:hover{transform:none;box-shadow:none;border-color:#9aaedc}
.calc-card b{font-size:16px;letter-spacing:-.3px}
.calc-card span{font-size:13px;line-height:1.65;color:var(--muted)}
/* Home: one search, a short set of shortcuts, then task guides. */
.home-page .hero{background:#4b69d4;padding:72px 24px 56px;text-align:center;color:#fff}
.home-page .hero::before{content:none}
.home-brand{font-size:50px!important;line-height:1.25!important;letter-spacing:-2px!important;margin:0 auto 12px!important;font-weight:800}
.home-page .hero>p{color:#e4eafd!important;margin:0 auto 30px!important;font-size:15px}
.home-search{display:flex;position:relative;max-width:740px;margin:auto;text-align:left;background:#fff;border-radius:9px;box-shadow:0 5px 18px #263b7426}
.home-search select{width:125px;flex-shrink:0;border:0;border-right:1px solid #e7ebf1;border-radius:9px 0 0 9px;padding:0 18px;color:#4f5d77;background:#fff;font-size:14px}
.home-search input{min-width:0;flex:1;width:100%;height:66px;border:0;background:transparent;padding:16px 18px;color:var(--ink);font-size:16px;outline:0}
.home-search:focus-within{outline:3px solid #bed0ff;outline-offset:3px}
.home-search button{width:62px;border:0;background:transparent;color:var(--brand);cursor:pointer;font-size:26px}
.home-search button svg{width:22px;height:22px;vertical-align:middle}
.home-search .search-hint{position:absolute;right:65px;top:22px;padding:0 6px;border:1px solid #dde3ef;border-radius:3px;color:#8a93a4;font:13px monospace;pointer-events:none}
.home-search:focus-within .search-hint{display:none}
#search-results{position:absolute;z-index:10;top:74px;left:0;right:0;width:auto;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:0 10px 26px #142b5626;max-height:410px;overflow-y:auto}
#search-results:not([hidden]){display:block}
.search-result{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;text-decoration:none;color:var(--ink);border-bottom:1px solid #edf0f4;font-size:14px}
.search-result:hover,.search-result[aria-selected="true"]{background:#f0f4ff}
.search-result small{font-size:12px;white-space:nowrap;color:var(--muted)}
.search-empty{padding:18px;font-size:14px;color:var(--muted);margin:0}
.search-help{max-width:740px;display:flex;align-items:center;justify-content:center;gap:18px;margin:18px auto 0;flex-wrap:wrap}
.search-help a{font-size:13px;color:#e2e9ff;text-decoration:none}
.search-help a:hover{text-decoration:underline;color:#fff}
.home-body{max-width:1000px;margin:0 auto;padding:34px 24px 44px}
.home-section{margin-bottom:30px}
.home-tabs{display:flex;gap:24px;border-bottom:1px solid #dce2eb;margin-bottom:0}
.home-tabs button{border:0;border-bottom:3px solid transparent;background:none;padding:12px 0;color:var(--muted);font-size:15px;font-weight:700;cursor:pointer}
.home-tabs button[aria-selected="true"]{color:var(--brand);border-bottom-color:var(--brand)}
.home-tools{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 30px}
.home-tool{display:grid;grid-template-columns:36px 1fr 16px;gap:12px;align-items:center;padding:20px 2px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--line);min-width:0}
.home-tool:hover b{color:var(--brand)}
.tool-icon{width:34px;height:34px;display:grid;place-items:center;color:#61749e;background:#e8edf8;border-radius:7px;font-size:13px;font-weight:700}
.home-tool b{display:block;font-size:15px}
.home-tool small{display:block;color:var(--muted);font-size:12px;margin-top:3px}
.home-tool .arrow{color:#8793ab}
.home-empty{padding:30px 0;font-size:14px;color:var(--muted)}
.home-category-links{display:flex;gap:10px 24px;flex-wrap:wrap;margin:22px 0}
.home-category-links a{font-size:13px;text-decoration:none;color:#5b6881}
.home-category-links a:hover{color:var(--brand)}
.home-guides{border:1px solid var(--line);background:#fff;border-radius:8px;padding:22px 24px}
.home-guides h2{font-size:17px;margin:0 0 16px}
.guide-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.guide-links a{text-decoration:none;color:var(--ink);font-size:14px;font-weight:700}
.guide-links span{display:block;color:var(--muted);font-size:12px;line-height:1.8;font-weight:400;margin-top:6px}
.home-footnote{display:flex;justify-content:space-between;gap:16px;margin-top:22px;font-size:12px;color:var(--muted)}
.home-footnote a{color:var(--muted)}
/* Calculator workspace */
.calculator-page{max-width:1040px;margin:28px auto 48px;padding:30px 40px 40px;background:#fff;border:1px solid var(--line);border-radius:8px}
.calculator-page .breadcrumb{max-width:none;margin:0 0 22px;padding:0;display:flex;flex-wrap:wrap;gap:9px;font-size:12px;color:#8490a4}
.calculator-page .breadcrumb a{font-size:12px;color:#6f7d93}
.calculator-page .calculator-home{display:none}
.calculator-page h1{font:700 30px/1.45 Arial,"Malgun Gothic",sans-serif;letter-spacing:-1px;margin:0 0 10px}
.calculator-page .lead{font-size:15px;color:var(--muted);margin:0 0 24px;max-width:820px;line-height:1.85}
.calculator-box{border:1px solid #dce3ef;border-radius:8px;box-shadow:none;background:#fff}
.calculator-box input:not([type="checkbox"]):not([type="radio"]),.calculator-box select,.calculator-box textarea{min-height:48px;border-radius:5px;font-size:15px;color:var(--ink)}
.calculator-box input:focus,.calculator-box select:focus,.calculator-box textarea:focus{outline:2px solid #9db5ff;outline-offset:1px}
.primary-btn{background:var(--brand);border-radius:5px;box-shadow:none;font-size:15px;min-height:46px}
.primary-btn:hover{background:#3353c7;transform:none;box-shadow:none}
.secondary-btn{border-radius:5px}
.result{border:1px solid #d7e2fa;border-radius:6px;background:#f2f6ff;color:#293b61;overflow-wrap:anywhere}
.result.show{display:block}
.result strong{font-family:inherit;font-variant-numeric:tabular-nums;color:#3159c4}
.result table{font-variant-numeric:tabular-nums}
.calculator-note{font-size:12px;line-height:1.8;color:#6a7587}
.calculator-box+.calculator-note{margin:12px 0 20px;padding:0}
.calculator-page>.content-block{margin-top:24px;padding:24px 0;border-top:1px solid var(--line)}
.content-block h2{font-size:20px;letter-spacing:-.5px}
.content-block p,.content-block li{color:#57647a;font-size:14px;line-height:1.9}
.calculator-editorial{margin-top:36px;border-top:1px solid var(--line);padding-top:26px}
.editorial-guide-head{margin-bottom:16px}
.editorial-guide-head h2{font-size:21px;letter-spacing:-.5px;margin:0}
.editorial-kicker{display:none}
.editorial-local-nav{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px}
.editorial-local-nav span{display:none}
.editorial-local-nav a{font-size:13px;padding:7px 12px;border:1px solid var(--line);border-radius:5px;color:#60708d;text-decoration:none;background:#fff}
.editorial-local-nav a:hover{background:#f1f5ff;border-color:#c4d1ee}
.editorial-cluster{border-top:1px solid var(--line);padding:24px 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 32px}
.editorial-cluster-head{grid-column:1/-1}
.editorial-cluster-head span{display:none}
.editorial-cluster-head h2{font-size:18px;margin:0}
.calculator-editorial .content-block{border:0;padding:0;margin:0;min-width:0}
.calculator-editorial h3{font-size:14px;font-weight:700;margin:0 0 10px;color:#34435c}
.calculator-editorial p,.calculator-editorial li{font-size:14px;line-height:1.95;margin-top:0}
.calculator-editorial ul,.calculator-editorial ol{margin:0;padding-left:19px}
.calculator-editorial li+li{margin-top:8px}
.editorial-formula{grid-column:1/-1;background:#f7f8fb;padding:18px!important;border:1px solid #e6eaf1!important;border-radius:6px}
.editorial-detail,.editorial-faq,.editorial-sources,.editorial-related,.editorial-review{grid-column:1/-1}
.editorial-detail ul{padding-left:19px}
.editorial-faq details{border-bottom:1px solid var(--line);padding:13px 0}
.editorial-faq summary{cursor:pointer;font-size:14px;color:#3d4a61}
.editorial-faq details p{margin:12px 0 0}
.editorial-review{display:flex;align-items:center;flex-wrap:wrap;gap:8px 18px;font-size:11px;color:#7b8698;padding-top:18px;border-top:1px solid var(--line)}
.editorial-review strong{font-size:11px}
.editorial-review a{color:#6d7e9a}
.related{gap:8px}
.related a{background:#f1f4f9;border-radius:5px;font-size:13px;padding:8px 12px}
.scenario-panel{margin:24px 0;border-radius:7px!important;box-shadow:none!important;background:#f8faff!important;border:1px solid #dde5f2!important}
.scenario-panel h2{font-size:19px!important}
.scenario-panel p{font-size:13px!important}
.scenario-panel button{border-radius:5px!important;box-shadow:none!important}
.scenario-empty{padding:22px!important;min-height:0!important;border-radius:5px!important;font-size:13px!important}
/* Shared result tools: tied to an actual completed calculation. */
.result-tools{border-top:1px solid #dce3ef;padding-top:14px;margin-top:18px}
.result-tools-bar{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.result-tools button,.workbench-actions button{border:1px solid #c9d5ed;border-radius:5px;background:#fff;color:#3d5b95;padding:9px 12px;font-size:12px;cursor:pointer;min-height:38px}
.result-tools button:disabled{opacity:.5;cursor:default}
.result-tools-note{font-size:12px!important;color:#6c7890!important;margin:10px 0 0!important}
.result-tools-status{font-size:12px;min-height:18px;color:#385a95}
.result-tools textarea{width:100%;min-height:150px;font-size:12px;background:#fff;padding:12px;border:1px solid var(--line);border-radius:5px}
.result-history{margin-top:16px;border-top:1px solid var(--line);padding-top:16px}
.result-history summary{cursor:pointer;font-size:13px;font-weight:700}
.history-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}
.history-card{border:1px solid #dbe3f1;background:#fff;border-radius:5px;padding:14px;min-width:0}
.history-card h3{font-size:13px;margin:0 0 10px}
.history-card p,.history-card li{font-size:12px!important;margin:5px 0;color:#58677f}
.history-card ul{padding-left:16px}
.history-card pre{white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;font-size:12px;line-height:1.75;max-height:280px;overflow-y:auto}
.history-card button{margin-top:8px;padding:5px 8px}
.input-updated{margin:12px 0;padding:11px 14px;background:#fff8e9;border:1px solid #ead8ac;border-radius:5px;color:#796021;font-size:13px}
.workbench{margin-top:24px;border:1px solid #dfe5ef;background:#fafbfe;border-radius:7px;padding:22px}
.workbench h2{font-size:18px;margin:0 0 8px}
.workbench p{font-size:13px;color:#66738a;line-height:1.8}
.workbench-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0}
.workbench label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600}
.workbench input,.workbench select{width:100%;min-width:0;height:46px;padding:10px;border:1px solid #cfd8e7;background:#fff;border-radius:5px;font-size:16px}
.workbench textarea{width:100%;min-width:0;padding:12px;border:1px solid #cfd8e7;background:#fff;border-radius:5px;font-family:inherit;font-size:16px;line-height:1.7}
.workbench-wide{grid-column:1/-1}
.workbench .primary-btn{margin-top:0}
.workbench-output{margin-top:18px}
.workbench-output:empty{display:none}
.workbench-table-wrap{overflow-x:auto}
.workbench table{width:100%;border-collapse:collapse;font-size:13px;font-variant-numeric:tabular-nums;background:#fff}
.workbench caption{text-align:left;font-weight:700;padding:8px 0}
.workbench th,.workbench td{border-bottom:1px solid #e2e7ef;text-align:right;padding:10px}
.workbench th:first-child,.workbench td:first-child{text-align:left}
.workbench thead{background:#eef2f9}
.workbench-metrics{display:flex;gap:16px;flex-wrap:wrap;padding:16px;background:#eef3ff;border-radius:5px}
.workbench-metrics div{flex:1;min-width:140px}
.workbench-metrics span{display:block;font-size:12px;color:#62708c}
.workbench-metrics strong{display:block;font-size:22px;color:#355bb7}
.unit-extra-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.unit-extra-actions button{border:1px solid #ccd7eb;background:#fff;border-radius:5px;padding:8px 12px;color:#436294;cursor:pointer}
.unit-reference-table{margin-top:16px;width:100%;font-size:13px;border-collapse:collapse}
.unit-reference-table th,.unit-reference-table td{padding:9px;border-bottom:1px solid #dfe7f7;text-align:left}
.unit-reference-table td:last-child{text-align:right;font-variant-numeric:tabular-nums}
/* Category and supporting pages */
.category-page{max-width:1040px;margin:28px auto 40px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:32px}
.category-page h1{font-size:28px;letter-spacing:-.8px}
.category-page .content-block{margin-top:22px}
.category-purpose-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.category-purpose-card{border:1px solid var(--line);border-radius:6px;box-shadow:none;padding:18px;background:#fff}
.category-purpose-card h3{font-size:16px}
.category-purpose-links a{border-radius:4px;background:#f5f7fb}
.category-purpose-links a b{font-size:14px}
.category-purpose-links a span{font-size:12px}
.category-summary-bar,.category-tag,.category-all-tools{border-radius:6px!important;background:#f6f8fc!important}
.category-calculator-list{grid-template-columns:repeat(2,minmax(0,1fr))}
.category-page .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.info-page main{max-width:960px;background:#fff;margin:28px auto 40px;padding:32px;border:1px solid var(--line);border-radius:8px}
.info-page h1{font-size:28px;letter-spacing:-.8px}
.info-page h2{font-size:21px}
@media(max-width:760px){
 .site-header{padding:0 18px;gap:18px;height:62px}.site-header:before{height:62px}.site-header nav{gap:16px;overflow-x:auto;white-space:nowrap}.site-header nav a{font-size:12px}.logo{font-size:19px}
 .home-page .hero{padding:46px 18px 34px}.home-brand{font-size:38px!important}.home-page .hero>p{font-size:13px}
 .home-search select{width:98px;padding:0 10px;font-size:12px}.home-search input{height:58px;padding:12px;font-size:14px}.home-search button{width:44px}.home-search .search-hint{display:none}
 #search-results{top:66px}.search-result{padding:13px 12px;font-size:13px}.search-result small{font-size:11px}.search-help{gap:12px 16px}.search-help a{font-size:12px}
 .home-body{padding:24px 18px 32px}.home-tools{gap:0 18px}.home-tool{grid-template-columns:1fr 12px;gap:7px;padding:18px 0}.home-tool .tool-icon{display:none}.home-tool b{font-size:13px}.home-tool small{font-size:11px}.home-tabs{gap:20px}.home-tabs button{font-size:14px}
 .guide-links{grid-template-columns:1fr;gap:18px}.guide-links a+a{border-top:1px solid var(--line);padding-top:16px}.home-guides{padding:20px}.home-footnote{display:block;line-height:1.9}.home-footnote a{display:block;margin-top:7px}
 .calculator-page,.category-page{margin:16px 12px 28px;padding:22px 18px;border-radius:6px}.calculator-page h1{font-size:25px}.calculator-page .lead{font-size:14px}.calculator-page .breadcrumb{margin-bottom:18px}
 .calculator-box input:not([type="checkbox"]):not([type="radio"]),.calculator-box select{font-size:16px}
 .editorial-cluster{grid-template-columns:1fr;gap:20px;padding:22px 0}.editorial-cluster-head,.editorial-detail,.editorial-faq,.editorial-sources,.editorial-related,.editorial-review{grid-column:auto}
 .calculator-editorial{margin-top:28px}.editorial-guide-head h2{font-size:19px}.editorial-local-nav{gap:6px}.editorial-local-nav a{font-size:12px;padding:7px 10px}.editorial-formula{grid-column:auto;padding:14px!important}
 .history-grid{grid-template-columns:1fr}.workbench{padding:17px}.workbench-form{grid-template-columns:1fr}.workbench table{font-size:12px}.workbench th,.workbench td{padding:9px 6px}
 .category-purpose-grid,.category-calculator-list,.category-page .card-grid{grid-template-columns:1fr}.card-grid{grid-template-columns:1fr}.section-heading{align-items:flex-start;flex-direction:column;gap:6px}
 .info-page main{margin:16px 12px 28px;padding:22px 18px}.info-page h1{font-size:25px}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}