@charset "UTF-8";
:root{--paper:#f6f4ed;--ink:#203e3a;--muted:#66736b;--line:#dcded2;--accent:#baee5b;--white:#fffef9}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;font-size:14px;line-height:1.8}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,summary,select{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #4b6b09;outline-offset:4px}.masthead{max-width:1280px;margin:auto;padding:25px 48px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{font-weight:800;letter-spacing:.13em;font-size:14px;display:flex;align-items:center;gap:12px}.brand-icon{font-size:32px;line-height:1}.edition,.small-label,.eyebrow{font-size:10px;font-weight:700;letter-spacing:.16em}.edition{color:var(--muted)}main{max-width:1184px;margin:auto}.intro{position:relative;padding:66px 0 28px;overflow:hidden}.eyebrow{display:flex;align-items:center;gap:9px}.eyebrow span{height:8px;width:8px;border-radius:50%;background:#63853a}h1{font-size:clamp(36px,5vw,60px);line-height:1.38;letter-spacing:.07em;font-weight:600;margin:22px 0}.lead{color:var(--muted);font-size:14px;line-height:2}.intro-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:38px;padding-top:24px;border-top:1px solid var(--line)}.spoiler{font-size:11px;letter-spacing:.06em;border:1px solid #c8cebb;border-radius:4px;padding:5px 11px}.total{font-size:11px;letter-spacing:.12em}.orbit{position:absolute;right:10px;top:30px;border:1px solid #d4dbc8;border-radius:50%;width:330px;height:330px;display:flex;justify-content:center;gap:12px;align-items:center;transform:rotate(-23deg);color:#718065;font-size:10px;letter-spacing:.1em;z-index:-1}.orbit:before{content:"";position:absolute;width:250px;height:250px;border:1px solid #d4dbc8;border-radius:50%}.orbit:after{content:"";width:15px;height:15px;background:var(--accent);border-radius:50%;position:absolute;right:25px;top:54px}.workspace{display:grid;grid-template-columns:240px minmax(0,1fr);gap:66px;padding:24px 0 80px;border-top:1px solid var(--line)}aside{align-self:start;position:sticky;top:25px}.small-label{color:var(--muted);margin:0}aside h2{font-size:20px;font-weight:600;margin:7px 0 26px}label{display:block;font-size:12px;font-weight:600;margin:19px 0 7px}input[type=search],select{width:100%;padding:11px 12px;border:1px solid #cbd1c3;border-radius:5px;background:var(--white);color:var(--ink);font-size:14px}.checkbox{display:flex;align-items:center;gap:8px;font-weight:400;font-size:12px}.checkbox input{accent-color:var(--ink);width:16px;height:16px}.reset{border:0;background:none;padding:6px 0;color:var(--muted);font-size:12px}.guide{margin-top:30px;border-top:1px solid var(--line);padding-top:18px;font-size:11px;color:var(--muted)}.guide h3{font-size:12px;color:var(--ink)}.result-bar{display:flex;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line);font-size:12px;min-height:42px}.result-bar button{background:none;border:0;color:var(--muted);font-size:12px}.year-section{display:grid;grid-template-columns:94px minmax(0,1fr);padding-top:28px;gap:22px}.year-label{margin:0;font-size:21px;font-weight:600;letter-spacing:.015em;line-height:1.4;padding-top:15px}.year-label small{display:block;font-size:10px;color:var(--muted);margin-top:6px;letter-spacing:.08em}.year-events{position:relative;border-left:1px solid #cbd3c1;padding-left:24px}.year-events:before{content:"";position:absolute;width:8px;height:8px;background:var(--ink);border:4px solid var(--paper);box-sizing:content-box;left:-8px;top:21px;border-radius:50%}details{border-bottom:1px solid var(--line)}summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:19px 0;font-size:14px;line-height:1.85}summary::-webkit-details-marker{display:none}summary .title{overflow-wrap:anywhere}summary:hover .title{color:#587d29}.mark{flex-shrink:0;border:1px solid #cbd1c3;border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;font-weight:400;font-size:17px}.mark:after{content:"+"}details[open] .mark{background:var(--accent);border-color:var(--accent)}details[open] .mark:after{content:"−"}.detail-body{background:#ecefe3;padding:19px 22px;margin-bottom:18px;border-radius:5px;font-size:13px;overflow-wrap:anywhere}.detail-body h3{font-size:10px;letter-spacing:.07em;color:#627159;margin:0 0 6px}.detail-body p{white-space:pre-wrap;margin:0 0 16px}.detail-body p:last-child{margin-bottom:0}.detail-body ul{margin:0;padding-left:20px}.source-empty{color:var(--muted);font-size:12px}.event-id{font-size:10px;color:var(--muted);display:block;text-align:right;margin-top:12px;text-decoration:underline}#empty{padding:64px 15px;text-align:center;color:var(--muted)}#empty h2{font-size:18px}footer{max-width:1184px;margin:auto;border-top:1px solid var(--line);padding:27px 0 40px;display:flex;flex-wrap:wrap;justify-content:space-between;font-size:11px;letter-spacing:.03em}footer small{margin-left:12px;font-weight:400;color:var(--muted)}footer p{flex-basis:100%;color:var(--muted);font-size:10px}details:target{outline:2px solid #8da25f;outline-offset:5px;border-radius:3px}@media(min-width:1450px){main,footer{max-width:1184px}}@media(max-width:1280px){main,footer{margin-left:48px;margin-right:48px}}@media(max-width:800px){.workspace{gap:30px;grid-template-columns:190px minmax(0,1fr)}.year-section{grid-template-columns:1fr;gap:8px}.year-label{font-size:21px}.year-label small{display:inline;margin-left:10px}.orbit{opacity:.5;right:-80px}.edition{display:none}}@media(max-width:600px){.masthead{padding:18px 22px}.brand{font-size:11px}.brand-icon{font-size:27px}main,footer{margin-left:22px;margin-right:22px}.intro{padding-top:36px}.eyebrow{font-size:9px}h1{font-size:38px;margin:20px 0}.lead{font-size:12px}.orbit{width:250px;height:250px;right:-120px;top:20px}.orbit:before{width:180px;height:180px}.intro-bottom{gap:12px;margin-top:25px}.spoiler{font-size:10px;padding:4px 6px}.total{font-size:9px}.workspace{display:block;padding-top:20px}aside{position:static;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 12px}aside .small-label,aside h2,.guide{display:none}aside label[for=search]{grid-column:1;grid-row:1}#search{grid-column:1;grid-row:2}aside label[for=period]{grid-column:2;grid-row:1}#period{grid-column:2;grid-row:2}aside label{margin-top:0}.checkbox{grid-column:1 / -1;margin-top:14px}.reset{grid-column:1 / -1;text-align:left;margin-bottom:20px}input[type=search],select{font-size:16px}.year-section{padding-top:25px}.year-events{padding-left:18px;margin-left:4px}summary{font-size:13px;padding:16px 0}.detail-body{padding:17px;font-size:12px}.result-bar{font-size:11px}.intro-bottom{flex-wrap:wrap}footer span{display:block}footer small{display:block;margin:4px 0}footer p{line-height:1.8}.guide{margin-top:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.event-row{display:grid;grid-template-columns:58px minmax(0,1fr);gap:12px;align-items:start}
.event-row details{grid-column:2;min-width:0}
.event-date{grid-column:1;grid-row:1;padding-top:19px;font-size:14px;line-height:1.85;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:0;white-space:nowrap}
@media(max-width:600px){.event-row{grid-template-columns:44px minmax(0,1fr);gap:8px}.event-date{padding-top:16px;font-size:13px}}
/* Colorful timeline accents, with a wider Japanese date column. */
:root{--paper:#fff;--ink:#252725;--muted:#666b66;--line:#dfe3dc;--accent:#b6ff00;--white:#fff}
body{background:#fff;font-size:14px}
.masthead{border-bottom:2px solid var(--ink);padding-top:20px;padding-bottom:20px}
.brand{font-size:20px;font-weight:800;letter-spacing:0}
.edition{letter-spacing:0;font-size:11px}
.intro{padding-top:40px;padding-bottom:26px;border-top:7px solid #b6ff00;margin-top:24px}
.eyebrow{color:#3b4530;letter-spacing:0;font-size:12px;font-weight:700}
h1{font-size:52px;font-weight:800;letter-spacing:0;line-height:1.3;margin:16px 0 20px;text-decoration:underline;text-decoration-color:#b6ff00;text-decoration-thickness:10px;text-underline-offset:8px}
.lead{line-height:1.9;color:#5d625a}
.intro-bottom{margin-top:24px;padding-top:18px;border-top:0;gap:12px;flex-wrap:wrap}
.spoiler{background:#eef3ff;color:#3c517a;border-color:#c3d1ec;letter-spacing:0;font-weight:600;border-radius:4px}
.total{letter-spacing:0;font-weight:700;font-size:12px}
.workspace{border-top:2px solid var(--ink);gap:42px}
aside h2{border-left:5px solid #b6ff00;padding-left:11px;font-weight:800}
input[type=search],select{border:1px solid #b5bcb0;border-radius:6px;background:#fafbf8}
input[type=search]:focus,select:focus{background:#fff}
.result-bar{border-bottom:2px solid var(--ink);font-weight:600;gap:12px}
.result-bar button{color:#252725;font-weight:700;flex-shrink:0}
.year-section{grid-template-columns:112px minmax(0,1fr);gap:18px;padding-top:30px}
.year-label{font-size:21px;font-weight:800;letter-spacing:0;padding:13px 0 8px;border-top:5px solid #b6ff00}
.year-section:nth-child(3n+2) .year-label{border-color:#b6ff00}
.year-section:nth-child(3n) .year-label{border-color:#b6ff00}
.year-events{border-left:2px solid #dce3d2;padding-left:20px}
.year-events:before{background:#b6ff00;box-shadow:0 0 0 1px #b6ff00;border-color:#fff;left:-9px}
.year-section:nth-child(3n+2) .year-events:before{background:#b6ff00;box-shadow:0 0 0 1px #b6ff00}
.year-section:nth-child(3n) .year-events:before{background:#b6ff00;box-shadow:0 0 0 1px #b6ff00}
.event-row{grid-template-columns:84px minmax(0,1fr);gap:12px}
.event-date{color:#59614e;font-size:13px;padding-top:20px;line-height:1.85;letter-spacing:0}
summary{font-weight:600;gap:12px;min-height:64px}
summary:hover .title{color:#3f6500}
.mark{width:28px;height:28px;border:1px solid #9acb24;background:#eaffb8;color:#303d1d}
details[open] .mark{background:#b6ff00;border-color:#7fae10}
.detail-body{background:#f6faee;border-left:3px solid #b6ff00;border-radius:4px}
.detail-body h3{color:#485d27;letter-spacing:0}
.guide h3,footer{letter-spacing:0}
footer{border-top:2px solid var(--ink)}
@media(max-width:900px){.workspace{grid-template-columns:190px minmax(0,1fr);gap:28px}.year-section{grid-template-columns:1fr;gap:10px}.year-label{padding-top:9px;width:fit-content;min-width:110px}.year-events{margin-left:5px}}
@media(max-width:600px){.masthead{padding:18px 22px}.brand{font-size:18px}.intro{padding-top:26px;margin-top:18px}h1{font-size:36px;text-decoration-thickness:7px}.lead{font-size:12px}.workspace{display:block}.year-section{padding-top:28px}.event-row{grid-template-columns:72px minmax(0,1fr);gap:8px}.event-date{font-size:12px;padding-top:17px}.year-events{padding-left:14px}summary{font-size:13px;padding:16px 0;gap:8px;min-height:60px}.mark{width:26px;height:26px}.detail-body{padding:14px 12px}.total{font-size:11px}.result-bar{font-size:10px}.result-bar button{font-size:11px}h1{overflow-wrap:anywhere}}
.site-notice{margin-top:24px;padding-top:16px;border-top:1px solid var(--line);font-size:12px;line-height:1.9;color:var(--muted);overflow-wrap:anywhere;letter-spacing:0}
.site-notice p{margin:0 0 12px;font-size:12px}
.site-notice a{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.site-notice a:hover{background:var(--accent)}
.site-notice .site-author{color:var(--ink);margin-bottom:0}
.site-notice-bottom{display:none}
@media(min-width:601px){aside{position:static}}
@media(max-width:600px){.site-notice-side{display:none}.site-notice-bottom{display:block;flex-basis:100%}}

.event-static{grid-column:2;min-width:0;border-bottom:1px solid var(--line)}
.event-summary{display:flex;align-items:center;padding:19px 0;font-size:14px;line-height:1.85;font-weight:600;min-height:64px}
.event-summary .title{overflow-wrap:anywhere}
@media(max-width:600px){.event-summary{padding:16px 0;font-size:13px;min-height:60px}}

.event-date{white-space:normal;overflow-wrap:anywhere}