/* StayDays: navy, paper and amber. Same-origin only, no external fonts or images. */
:root{--paper:#f6f3ec;--card:#fffdf9;--ink:#1c2533;--muted:#576173;--navy:#1f3a5f;--navy-2:#2d5a8c;--amber:#d9822b;--amber-soft:#fbe8d3;--line:#e2dccf;--danger:#a4271f;--ok:#2e6b4f;--radius:14px;--shadow:0 1px 2px rgba(31,58,95,.08),0 6px 18px rgba(31,58,95,.07)}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 system-ui,-apple-system,"Hiragino Sans","Yu Gothic UI","Segoe UI",Roboto,Helvetica,Arial,sans-serif;overflow-wrap:anywhere}
:lang(ja){word-break:keep-all;line-break:strict}
a{color:var(--navy-2)}
a:hover{color:var(--amber)}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:4px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:8px 12px;z-index:9}
.skip:focus{left:8px}
.site-head{background:var(--card);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:10px 18px;min-height:64px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.08rem;color:var(--navy);text-decoration:none}
.site-head nav{display:flex;gap:16px;flex-wrap:wrap}
.site-head nav a{text-decoration:none;color:var(--ink);font-weight:500}
.site-head nav a[aria-current="page"]{color:var(--amber)}
main{padding:28px 20px 56px}
h1{font-size:clamp(1.65rem,4vw,2.4rem);line-height:1.25;color:var(--navy);margin:.2em 0 .4em}
h2{font-size:1.4rem;line-height:1.35;color:var(--navy);margin:1.7em 0 .5em}
h3{font-size:1.1rem;margin:1.2em 0 .4em}
.lede{font-size:1.08rem;color:var(--muted);max-width:46em}
blockquote{margin:1em 0;padding:12px 16px;background:var(--card);border-left:4px solid var(--navy-2);border-radius:0 10px 10px 0}
.cite{font-size:.9rem;color:var(--muted)}
.callout{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:16px 0}
.callout.warm{background:var(--amber-soft);border-color:#efc79d}
.callout p{margin:0}
.hint{font-size:.92rem;color:var(--muted)}
pre.sample{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px;overflow-x:auto;font-size:.9rem}

/* tool */
.tool{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:22px;margin:24px 0}
.tool>h2{margin-top:0}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;align-items:end}
.settings{padding-bottom:16px;border-bottom:1px dashed var(--line)}
.add{padding-top:16px}
.field{display:flex;flex-direction:column;gap:4px;min-width:0}
label{font-weight:600;font-size:.92rem}
input[type=date],input[type=text],select,textarea{font:inherit;width:100%;padding:9px 10px;border:1px solid #cfc7b6;border-radius:10px;background:#fff;color:var(--ink);min-height:44px}
textarea{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92rem;margin:6px 0 10px}
button,.filebtn{font:inherit;font-weight:600;padding:9px 14px;border-radius:10px;border:1px solid #c5bca9;background:#fff;color:var(--ink);cursor:pointer;min-height:44px;display:inline-flex;align-items:center}
button:hover,.filebtn:hover{border-color:var(--navy-2)}
button.primary{background:var(--navy);border-color:var(--navy);color:#fff}
button.primary:hover{background:var(--navy-2)}
button.danger{color:var(--danger);border-color:#e0b4b0}
button.quiet{background:transparent}
.filebtn input{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden}
.filebtn:focus-within{outline:3px solid var(--amber);outline-offset:2px}
.check-row{display:inline-flex;align-items:center;gap:8px;font-weight:500}
.check-row input{width:20px;height:20px}
.paste{margin:16px 0 0;border:1px solid var(--line);border-radius:12px;padding:10px 14px;background:#fff}
.paste summary{cursor:pointer;font-weight:600}
.paste label{display:block;font-weight:400;font-size:.92rem;color:var(--muted);margin-top:8px}
.status{min-height:1.4em;margin:12px 0 4px;color:var(--ok);font-weight:600}
.status.warn{color:var(--danger)}
.error-summary{border:2px solid var(--danger);border-radius:12px;padding:10px 16px;background:#fff6f5;margin:10px 0}
.error-summary h3{margin:.2em 0;color:var(--danger)}
.table-scroll{overflow-x:auto;margin:12px 0}
table{border-collapse:collapse;width:100%;font-size:.95rem;background:#fff}
caption{text-align:left;font-weight:600;padding:6px 0;color:var(--muted)}
th,td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top;white-space:nowrap}
td:nth-child(6){white-space:normal;min-width:8em}
thead th{background:#f1ede4;font-size:.88rem}
.num{text-align:right;font-variant-numeric:tabular-nums}
.flag{display:inline-block;font-size:.8rem;padding:1px 8px;border-radius:999px;background:#ece8de;color:var(--muted);margin:0 4px 2px 0}
.flag.hot{background:var(--amber-soft);color:#8a4a10;font-weight:700}
.result h3{color:var(--navy)}
.empty{color:var(--muted)}
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:8px 0 14px}
.facts div{background:#f8f5ee;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.facts dt{font-size:.82rem;color:var(--muted)}
.facts dd{margin:2px 0 0;font-weight:700}
.facts dd.big{font-size:1.4rem;color:var(--navy)}
.check-box{border:1px solid var(--line);border-radius:12px;padding:6px 16px 10px;margin:12px 0;background:#fff}
.warn-text{color:var(--danger);font-weight:600}
.timeline .tl{list-style:none;padding:0;margin:8px 0}
.tl li{display:grid;grid-template-columns:3.4em 1fr 5.5em;gap:10px;align-items:center;margin:6px 0}
.tl-year,.tl-days{font-variant-numeric:tabular-nums;font-size:.9rem}
.tl-days{text-align:right;color:var(--muted)}
.tl-bar{position:relative;height:18px;background:#ebe6db;border-radius:6px;overflow:hidden}
.tl-win{position:absolute;top:0;bottom:0;background:#dbe5f0}
.tl-seg{position:absolute;top:0;bottom:0;background:var(--navy)}
.data-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:18px;padding-top:14px;border-top:1px dashed var(--line)}
.steps li{margin:.4em 0}

/* articles */
.article{max-width:46em}
.crumbs{font-size:.9rem;margin:0}
.guide-list{list-style:none;padding:0;display:grid;gap:12px}
.guide-list li{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px}
.guide-list a{font-weight:700}
.guide-list p{margin:.2em 0 0;color:var(--muted);font-size:.95rem}
.sources li{margin:.3em 0}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin:8px 0}
.faq summary{cursor:pointer;font-weight:600}
.notfound{font-size:1.1rem}
.site-foot{background:var(--card);border-top:1px solid var(--line);padding:22px 0;font-size:.9rem;color:var(--muted)}
.site-foot nav{display:flex;flex-wrap:wrap;gap:8px 16px;margin-bottom:8px}

/* ads: collapsed until filled, label only when filled */
.ad-slot{margin:32px auto;max-width:100%;clear:both}
.ad-slot ins.adsbygoogle[data-ad-status="unfilled"]{display:none!important}
.ad-slot:has(ins[data-ad-status="filled"])::before{content:attr(data-label);display:block;font-size:11px;letter-spacing:.04em;color:#888;margin-bottom:4px;text-align:center}
.ad-rail{display:none}
@media (min-width:1080px){.with-rail{display:grid;grid-template-columns:minmax(0,46em) 300px;gap:40px;align-items:start}.ad-rail{display:block;position:sticky;top:20px;margin-top:0}}

@media (max-width:860px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.facts{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:720px){br.wb{display:none}}
@media (max-width:520px){main{padding:20px 14px 40px}.wrap{padding:0 14px}.tool{padding:16px 12px}.grid{grid-template-columns:1fr}.facts{grid-template-columns:1fr}.site-head nav{gap:12px}.tl li{grid-template-columns:3em 1fr 4.6em;gap:6px}}
@media print{.site-head,.site-foot,.settings,.add,.paste,.data-actions,.ad-slot,.skip,.faq{display:none!important}body{background:#fff}.tool{box-shadow:none;border:0;padding:0}}