*{box-sizing:border-box}html{color-scheme:light}body{margin:0;color:var(--ink);background:var(--bg);font:var(--size)/1.65 -apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif}button,input{font:inherit}button{cursor:default}a{color:inherit;text-decoration:none}button,a,input{outline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--accent)}.a{--accent:#116954;--ink:#233d35;--muted:#52685f;--line:#dce5df;--bg:#f5f7f4;--soft:#eaf3eb;--size:16px;--pad:24px;--row:48px;--radius:12px}.b{--accent:#a74722;--ink:#44372d;--muted:#796653;--line:#e6dbcb;--bg:#fbf7ef;--soft:#f7ead7;--size:18px;--pad:32px;--row:60px;--radius:20px}.c{--accent:#2356ab;--ink:#202e46;--muted:#54647a;--line:#d8e0ec;--bg:#f2f5f9;--soft:#eaf0fc;--size:16px;--pad:16px;--row:44px;--radius:4px}.preview-bar{min-height:32px;padding:4px 16px;text-align:center;background:var(--ink);color:white;font-size:12px;letter-spacing:.04em}.preview-bar a{text-decoration:underline;margin-left:12px}.wrap{max-width:1120px;margin:auto;padding:0 32px}.site-header{background:#fff;border-bottom:1px solid var(--line)}.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-size:20px;font-weight:750;letter-spacing:.02em;white-space:nowrap;display:flex;align-items:center;gap:12px}.brand-mark{width:32px;height:32px;display:grid;place-items:center;background:var(--accent);color:white;border-radius:8px;font-size:18px}.main-nav{display:flex;gap:24px;font-size:14px;font-weight:600}.main-nav a{padding:12px 0}.main-nav .active{color:var(--accent);border-bottom:2px solid var(--accent)}.today{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:24px 0 20px;color:var(--muted);font-size:14px}.today strong{color:var(--ink);font-size:20px;margin:0 6px}.today-label{border:1px solid var(--line);border-radius:5px;padding:3px 7px;margin-right:8px;font-size:12px}.heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}h1{font-size:28px;letter-spacing:.04em;line-height:1.4;margin:0 0 6px}p{margin:0}.intro{color:var(--muted);font-size:14px}.eyebrow{font-size:11px;letter-spacing:.2em;color:var(--accent);font-weight:700;margin-bottom:9px}.lookup{border:1px solid var(--line);border-top:3px solid var(--accent);background:white;border-radius:var(--radius);padding:var(--pad);display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:center}.field label{display:block;font-weight:650;margin-bottom:8px}.input-shell{display:flex;align-items:center;border:1.5px solid var(--accent);border-radius:6px;height:56px;background:white;padding:0 16px;gap:10px}.input-shell svg{width:21px;color:var(--accent);flex:none}.input-shell input{border:0;min-width:0;width:100%;font-size:24px;background:transparent;color:var(--ink);outline:0;letter-spacing:.04em}.hint{font-size:12px;color:var(--muted);margin-top:8px}.answer{padding-left:32px;border-left:1px solid var(--line)}.answer-label{font-size:12px;color:var(--muted);margin-bottom:2px}.era{font-size:36px;font-weight:750;color:var(--accent);letter-spacing:.03em;line-height:1.3}.era small{font-size:22px}.result-line{display:flex;align-items:center;justify-content:space-between;gap:14px}.copy{border:1px solid var(--line);background:white;border-radius:6px;color:var(--ink);padding:9px 12px;min-height:44px;font-size:13px;white-space:nowrap}.roman{font-size:13px;color:var(--muted);margin-top:5px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px;margin-top:28px;align-items:start}.table-card{background:white;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.table-title{padding:18px 22px 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var(--line)}td:first-child{font-weight:650}tr.current{background:var(--soft);color:var(--accent)}.current-tag{font-size:10px;font-weight:500;margin-left:10px;border:1px solid currentColor;padding:1px 5px;border-radius:3px}.table-bottom{padding:12px 22px;display:flex;justify-content:space-between;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}.table-bottom button{border:0;background:none;color:var(--accent);font-size:13px;min-height:44px}.side-label{font-size:11px;letter-spacing:.12em;color:var(--muted);margin-bottom:12px}.tool-card{display:block;background:white;border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:12px}.tool-icon{font-size:20px;color:var(--accent);margin-bottom:10px}.tool-card h3{font-size:16px;margin:0 0 7px;display:flex;justify-content:space-between}.tool-card p{font-size:13px;color:var(--muted);line-height:1.8}.tool-card .text-link{display:block;font-size:12px;color:var(--accent);margin-top:16px}.ad{border:1px dashed var(--line);color:var(--muted);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:8px;min-height:160px;border-radius:var(--radius);margin-top:22px;background:var(--bg);font-size:11px;letter-spacing:.1em}.ad small{font-size:10px;letter-spacing:0}.guide{padding:28px 0 32px}.guide h2{font-size:17px;margin:0 0 8px}.guide p{font-size:13px;color:var(--muted);max-width:680px}.site-footer{border-top:1px solid var(--line);padding:22px 0;color:var(--muted);font-size:12px}.footer-inner{display:flex;justify-content:space-between;gap:16px}.footer-links{display:flex;gap:20px}.b .wrap{max-width:1100px}.b .site-header{background:var(--bg)}.b .brand-mark{border-radius:50%}.b .today{margin-top:28px}.b .heading{text-align:center;display:block;margin:20px 0 24px}.b h1{font-size:32px;font-family:"Hiragino Mincho ProN","Yu Mincho",serif}.b .lookup{border-top:1px solid var(--line);box-shadow:0 6px 20px #70532706;gap:40px}.b .input-shell{border-radius:10px;height:62px}.b .era{font-size:42px}.b .table-title h2{font-size:21px}.b .tool-card{background:#fffdf8;padding:24px}.b .workspace{gap:28px;margin-top:32px}.b .brand{font-family:"Hiragino Mincho ProN","Yu Mincho",serif}.b .main-nav{gap:20px}.c .site-header{border-top:4px solid var(--accent)}.c .header-inner{min-height:62px}.c .brand-mark{border-radius:3px}.c .today{margin:16px 0}.c h1{font-size:26px}.c .lookup{gap:24px}.c .era{font-size:32px}.c .input-shell{height:50px}.c .workspace{margin-top:20px;gap:20px;grid-template-columns:minmax(0,1fr) 250px}.c .table-title{padding:14px 18px 8px}.c .table-controls{padding:0 18px 10px}.c .tool-card{padding:16px}.c .tool-icon{display:none}.c .table-bottom{padding:6px 18px}.c .heading{margin-bottom:14px}.c .ad{min-height:140px}.c .eyebrow{display:none}@media(max-width:720px){.wrap{padding:0 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12px;gap:4px}.segmented button{padding:6px 9px}.extra{font-size:11px}th,td{padding:0 18px}.current-tag{margin-left:6px}.table-bottom{padding:8px 14px}aside{margin-top:26px}.tool-card{padding:20px}.ad{min-height:110px}.guide{padding:26px 0}.footer-inner{display:block}.footer-links{margin-top:14px;gap:16px;font-size:11px}.b .wrap{padding:0 18px}.b .heading{text-align:left;margin:18px 0}.b h1{font-size:24px}.b .today{margin-top:20px}.b .lookup{padding:24px}.b .input-shell{height:58px}.b .era{font-size:38px}.b .workspace{margin-top:28px}.b .table-title h2{font-size:18px}.c .wrap{padding:0 16px}.c .header-inner{min-height:62px}.c h1{font-size:22px}.c .today{margin:14px 0}.c .lookup{padding:16px}.c .answer{padding-top:12px;margin-top:12px}.c .workspace{display:block;margin-top:20px}.c .table-title{padding:12px 14px 8px}.c .table-controls{padding:0 10px 10px}.c .era{font-size:30px}}
@media(max-width:720px){.b .header-inner,.c .header-inner{padding-top:14px;padding-bottom:4px}}

/* Functional B implementation: preserve the approved warm palette and spacing. */
button,select{font:inherit}button{cursor:pointer;min-height:44px;border:1px solid var(--line);border-radius:8px;padding:8px 12px;background:#fff;color:var(--accent)}button:hover,a:hover{color:var(--accent)}input,select{max-width:100%;min-width:0;min-height:44px;border:1px solid var(--line);border-radius:8px;padding:8px;background:white;color:var(--ink)}label{display:block}input[type=checkbox]{min-height:20px;width:20px;vertical-align:middle}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent)}.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;background:#fff;padding:10px;z-index:10}.calculator{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;max-width:780px;margin:24px auto}.calculator label{margin:16px 0 6px;font-weight:600}.calculator input,.calculator select{width:100%}.calculator button{margin-top:20px}.calculator h1{font-size:28px}.calculator h2{font-size:22px}.output{margin-top:24px;overflow-wrap:anywhere}.output:empty{display:none}.output h2{font-size:24px}.output p{margin:8px 0}.copy-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.copy-row button{white-space:normal;font-size:14px;margin:0}.notice{font-size:14px;color:var(--muted);padding:12px;overflow-wrap:anywhere}.error{color:#a32517}.filters{flex-wrap:wrap;align-items:end;font-size:13px}.filters label{flex:1 1 100px}.filters input,.filters select{width:100%;font-size:14px}.filters .check{flex:0 1 auto;display:flex;gap:8px;align-items:center}.filters .check input{width:auto}.table-card td{overflow-wrap:anywhere;font-size:16px}.table-card:has(.optional) th,.table-card:has(.optional) td{padding:10px 6px;font-size:13px;width:auto}.selected-year{outline:2px solid var(--accent);outline-offset:-2px}.prose p{margin-bottom:16px}.prose a,.guide a,.footer-links a{text-decoration:underline}.school-candidate{border-top:1px solid var(--line);margin-top:24px;padding-top:16px}.event{padding:12px 0;border-bottom:1px solid var(--line)}.manual-copy{width:100%;min-height:100px;font:inherit}#copy-status:not(:empty){position:fixed;bottom:16px;left:16px;right:16px;max-width:600px;background:var(--ink);color:white;padding:16px;border-radius:12px;z-index:5}[hidden]{display:none!important}summary{cursor:pointer;padding:12px 0}.main-nav{flex-wrap:wrap} @media(max-width:720px){.main-nav,.b .main-nav{gap:14px}.calculator{padding:22px}.calculator h1{font-size:24px}.b .era{font-size:38px}.copy-row button{font-size:12px;padding:8px}.filters{padding:12px}.table-card td{padding:8px 12px}.today{flex-wrap:wrap}.footer-links{flex-wrap:wrap}.answer .hint{font-size:13px}.b .lookup{padding:24px}}