/* ぱぱっとツール 共有スタイル
   デザイン言語: 日本の文房具。方眼紙の上に、藍インクの文字と朱の赤ペン。
   tokens ------------------------------------------------------- */
:root{
  --paper:#FAF9F3;
  --grid:#E8E3D5;
  --card:#FFFFFF;
  --ink:#232B36;
  --ink-soft:#5A6472;
  --ai:#2C4E7E;
  --shu:#CE3F2C;--shu-solid:#CE3F2C;--shu-text:#CE3F2C;--badge-fg:#FFFFFF;
  --shu-wash:#FBECE7;
  --wash:#F2EFE5;
  --line:#CFC8B4;
  --shadow:#E4DECC;
  --font-body:"Hiragino Kaku Gothic ProN","Hiragino Sans","BIZ UDPGothic","Yu Gothic Medium","Yu Gothic",Meiryo,system-ui,sans-serif;
  --font-maru:"Hiragino Maru Gothic ProN","BIZ UDPGothic","Yu Gothic",Meiryo,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;color:var(--ink);background-color:var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:24px 24px;
  font-family:var(--font-body);line-height:1.85;font-size:16px;
}
img{max-width:100%;height:auto}
a{color:var(--ai);text-underline-offset:3px}
a:hover{color:var(--shu-text)}
:focus-visible{outline:3px solid var(--shu);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:8px 14px;border-radius:0 0 8px 0;z-index:99}
.skip:focus{left:0}

/* layout ------------------------------------------------------- */
.wrap{max-width:780px;margin:0 auto;padding:0 18px}
main{padding:22px 0 48px}
section{margin:34px 0}

/* header ------------------------------------------------------- */
.site-head{background:var(--paper);border-bottom:2px solid var(--ink)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.mark{display:inline-grid;place-items:center;width:32px;height:32px;background:var(--shu-solid);color:#fff;border-radius:9px;font-family:var(--font-maru);font-weight:800;font-size:19px;line-height:1}
.brand b{font-family:var(--font-maru);font-size:19px;letter-spacing:.04em}
.gnav{display:flex;gap:16px;font-size:14px}
.gnav a{text-decoration:none;color:var(--ink);border-bottom:2px solid transparent;padding:2px 1px}
.gnav a:hover{border-bottom-color:var(--shu);color:var(--ink)}

/* breadcrumb --------------------------------------------------- */
.crumb{font-size:12.5px;color:var(--ink-soft);margin:14px 0 0}
.crumb a{color:var(--ink-soft)}
.crumb span{margin:0 6px;color:var(--line)}

/* headings & text ---------------------------------------------- */
h1{font-family:var(--font-maru);font-size:clamp(24px,5.6vw,32px);letter-spacing:.03em;margin:.35em 0 .3em;line-height:1.4}
.lead{color:var(--ink-soft);margin-top:0;font-size:15.5px}
h2{font-size:clamp(19px,4.4vw,22px);margin:1.6em 0 .6em;padding-left:12px;position:relative;letter-spacing:.02em}
h2::before{content:"";position:absolute;left:0;top:.32em;width:5px;height:1.05em;background:var(--shu);border-radius:3px}
h3{font-size:16.5px;margin:1.4em 0 .4em}
small,.small{font-size:12.5px;color:var(--ink-soft)}
hr{border:0;border-top:2px dashed var(--line);margin:34px 0}

/* card / tool panel -------------------------------------------- */
.card,.tool-card{background:var(--card);border:2px solid var(--ink);border-radius:16px;box-shadow:5px 5px 0 var(--shadow);padding:20px}
.tool-card{padding:22px 20px}

/* form controls ------------------------------------------------ */
label{display:block;font-weight:700;font-size:14px;margin:14px 0 6px}
label:first-child{margin-top:0}
input[type=text],input[type=number],input[type=date],select,textarea{
  width:100%;font:inherit;color:var(--ink);background:#fff;
  border:1.5px solid var(--line);border-radius:10px;padding:11px 12px;min-height:48px;
}
textarea{min-height:150px;resize:vertical;line-height:1.7}
input:focus,select:focus,textarea:focus{border-color:var(--shu);outline:3px solid var(--shu-wash)}
.row{display:grid;gap:12px}
@media(min-width:560px){.row-2{grid-template-columns:1fr 1fr}.row-3{grid-template-columns:1fr 1fr 1fr}}
.check{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;margin-top:12px}
.check input{width:18px;height:18px;accent-color:var(--shu)}
.seg{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.seg label{display:flex;align-items:center;gap:6px;font-weight:600;font-size:14px;margin:0;border:1.5px solid var(--line);border-radius:999px;padding:8px 14px;cursor:pointer;background:#fff}
.seg input{accent-color:var(--shu)}
.seg label:has(input:checked){border-color:var(--shu);background:var(--shu-wash)}
.btn{display:inline-block;font:inherit;font-weight:700;border:2px solid var(--ink);border-radius:12px;padding:11px 20px;cursor:pointer;background:var(--shu-solid);color:#fff;box-shadow:3px 3px 0 var(--shadow)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--shadow)}
.btn-ghost{background:#fff;color:var(--ink)}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}

/* answer = 赤ペンの下線(このサイトのシグネチャ) ------------------- */
.answer-area{margin-top:20px;padding:16px 14px 10px;background:var(--wash);border-radius:12px}
.answer-label{font-size:13px;font-weight:700;color:var(--ink-soft);letter-spacing:.06em}
.answer{display:inline-block;font-size:clamp(30px,8vw,44px);font-weight:800;line-height:1.25;letter-spacing:.01em;font-variant-numeric:tabular-nums;
  padding-bottom:10px;
  background:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20240%2014'%20preserveAspectRatio='none'%3E%3Cpath%20d='M4%209%20C%2060%203,%20120%2013,%20176%207%20S%20232%206,%20236%208'%20fill='none'%20stroke='%23CE3F2C'%20stroke-width='6'%20stroke-linecap='round'/%3E%3C/svg%3E") bottom left / 100% 12px no-repeat;
}
.answer .unit{font-size:.45em;font-weight:700;margin-left:2px;color:var(--ink-soft)}
@media(prefers-reduced-motion:no-preference){
  .answer.pop{animation:pop .18s ease-out}
  @keyframes pop{from{transform:translateY(3px);opacity:.4}to{transform:none;opacity:1}}
}

/* stats(点線リーダーの一覧) ------------------------------------- */
.stats{margin:14px 0 0;padding:0;list-style:none}
.stats li{display:flex;align-items:baseline;gap:8px;padding:9px 2px;border-bottom:1.5px dotted var(--line);font-size:15px}
.stats li:last-child{border-bottom:0}
.stats .k{color:var(--ink-soft);flex:0 0 auto}
.stats .dots{flex:1 1 auto}
.stats .v{font-weight:800;font-variant-numeric:tabular-nums;font-size:17px}

/* how-to / faq / notes ----------------------------------------- */
.howto ol{padding-left:1.4em;margin:0}
.howto li{margin:6px 0}
.faq details{background:var(--card);border:1.5px solid var(--line);border-radius:12px;padding:2px 16px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:700;padding:11px 0;list-style:none;position:relative;padding-right:28px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:2px;top:50%;transform:translateY(-50%);color:var(--shu-text);font-weight:800;font-size:20px}
.faq details[open] summary::after{content:"−"}
.faq p{margin:4px 0 14px}
.note{background:var(--shu-wash);border-left:5px solid var(--shu);border-radius:0 10px 10px 0;padding:12px 14px;font-size:14.5px}

/* tables -------------------------------------------------------- */
table{width:100%;border-collapse:collapse;font-size:14.5px;background:var(--card)}
th,td{border:1.5px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
th{background:var(--wash);font-size:13.5px}
.table-scroll{overflow-x:auto;border-radius:10px}

/* home ----------------------------------------------------------- */
.hero{padding:34px 0 6px;text-align:left}
.hero h1{font-size:clamp(30px,7.4vw,44px);margin:0 0 6px}
.hero h1 em{font-style:normal;color:var(--shu-text)}
.hero p{margin:6px 0 14px;color:var(--ink-soft)}
.badges{display:flex;gap:8px;flex-wrap:wrap}
.badges span{font-size:12.5px;font-weight:700;border:1.5px solid var(--ink);border-radius:999px;padding:4px 12px;background:#fff}
.tool-list{display:grid;gap:14px;padding:0;margin:16px 0 0;list-style:none}
@media(min-width:600px){.tool-list{grid-template-columns:1fr 1fr}}
.tool-list a{display:block;text-decoration:none;color:var(--ink);background:var(--card);border:2px solid var(--ink);border-radius:14px;padding:16px;box-shadow:4px 4px 0 var(--shadow)}
.tool-list a:hover{box-shadow:2px 2px 0 var(--shadow);transform:translate(2px,2px)}
.tool-list b{font-family:var(--font-maru);font-size:17px}
.tool-list p{margin:4px 0 8px;font-size:13.5px;color:var(--ink-soft)}
.sample{font-size:12.5px;background:var(--wash);border-radius:8px;padding:5px 9px;display:inline-block}
.sample i{font-style:normal;color:var(--shu-text);font-weight:800}

/* related links --------------------------------------------------- */
.related ul{padding-left:1.3em;margin:0}
.related li{margin:5px 0}

/* ad slot ---------------------------------------------------------- */
.ad-slot{margin:36px 0 0;min-height:10px;text-align:center}

/* footer ------------------------------------------------------------ */
.site-foot{border-top:2px solid var(--ink);background:var(--paper);margin-top:20px}
.site-foot .wrap{padding-top:26px;padding-bottom:30px}
.foot-grid{display:grid;gap:18px;font-size:14px}
@media(min-width:600px){.foot-grid{grid-template-columns:1.2fr 1fr 1fr}}
.foot-grid b{display:block;margin-bottom:6px;font-size:13px;color:var(--ink-soft);letter-spacing:.06em}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin:5px 0}
.foot-grid a{text-decoration:none}
.copyright{margin-top:22px;font-size:12px;color:var(--ink-soft)}

/* article(コラム) ---------------------------------------------------- */
.article p{margin:0 0 1em}
.article ul{margin:0 0 1em}
.article table{margin:10px 0 18px}
.article .date{font-size:12.5px;color:var(--ink-soft)}

/* ===== v2 追加: ダークモード ===== */
.theme-btn{font:inherit;width:38px;height:38px;border:2px solid var(--ink);border-radius:10px;background:var(--card);color:var(--ink);cursor:pointer;font-size:17px;line-height:1}
[data-theme="dark"]{
  --paper:#20242B;--grid:#2A303B;--card:#262B34;--ink:#E9E7DE;--ink-soft:#A7AEB9;
  --ai:#9DC1F2;--shu:#E4573F;--shu-solid:#CE3F2C;--shu-text:#F2694F;--badge-fg:#20242B;--shu-wash:#3A2A26;--wash:#2C313B;--line:#4A5160;--shadow:#14181F;
}
@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#20242B;--grid:#2A303B;--card:#262B34;--ink:#E9E7DE;--ink-soft:#A7AEB9;
    --ai:#9DC1F2;--shu:#E4573F;--shu-solid:#CE3F2C;--shu-text:#F2694F;--badge-fg:#20242B;--shu-wash:#3A2A26;--wash:#2C313B;--line:#4A5160;--shadow:#14181F;
  }
}
[data-theme="dark"] .answer{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20240%2014'%20preserveAspectRatio='none'%3E%3Cpath%20d='M4%209%20C%2060%203,%20120%2013,%20176%207%20S%20232%206,%20236%208'%20fill='none'%20stroke='%23E4573F'%20stroke-width='6'%20stroke-linecap='round'/%3E%3C/svg%3E")}
@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .answer{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20240%2014'%20preserveAspectRatio='none'%3E%3Cpath%20d='M4%209%20C%2060%203,%20120%2013,%20176%207%20S%20232%206,%20236%208'%20fill='none'%20stroke='%23E4573F'%20stroke-width='6'%20stroke-linecap='round'/%3E%3C/svg%3E")}
}

/* ===== v2 追加: トップの検索・ピン留め・最近使った ===== */
.tool-filter{margin:14px 0 4px}
.tool-filter input{width:100%;font:inherit;border:2px solid var(--ink);border-radius:12px;padding:12px 14px;background:var(--card);color:var(--ink)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 0;padding:0;list-style:none}
.chips a{display:inline-block;text-decoration:none;font-size:13px;font-weight:700;color:var(--ink);background:var(--card);border:1.5px solid var(--line);border-radius:999px;padding:6px 12px}
.chips a:hover{border-color:var(--shu)}
.cat-label{font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--ink-soft);margin:26px 0 2px}
.tool-item{position:relative}
.tool-item .star{position:absolute;top:10px;right:10px;z-index:2;width:34px;height:34px;border:1.5px solid var(--line);border-radius:999px;background:var(--card);cursor:pointer;font-size:16px;line-height:1;color:var(--ink-soft)}
.tool-item .star[aria-pressed="true"]{color:#fff;background:var(--shu-solid);border-color:var(--shu-solid)}
.tool-item a{padding-right:52px}
.hidden{display:none !important}

/* ===== v2 追加: 小型ボタン・出力欄・結果リスト ===== */
.copy-btn{font:inherit;font-size:13px;font-weight:700;border:1.5px solid var(--ink);border-radius:9px;padding:7px 12px;background:var(--card);color:var(--ink);cursor:pointer}
.copy-btn:hover{border-color:var(--shu-text);color:var(--shu-text)}
.mini-note{font-size:12.5px;color:var(--ink-soft);margin-top:8px}
textarea.out{background:var(--wash)}
.result-list{margin:14px 0 0;padding:0;list-style:none}
.result-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--card);border:1.5px solid var(--line);border-radius:10px;padding:9px 12px;margin:8px 0;font-size:15px}
.result-list .val{font-weight:700;font-variant-numeric:tabular-nums;word-break:break-all;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.meter{height:10px;border-radius:999px;background:var(--wash);border:1.5px solid var(--line);overflow:hidden;margin-top:10px}
.meter b{display:block;height:100%;background:var(--shu);border-radius:999px;transition:width .2s}
.badge-early{display:inline-block;font-size:12px;font-weight:800;color:var(--badge-fg);background:var(--ai);border-radius:999px;padding:3px 10px;margin-left:8px;vertical-align:middle}

/* ===== v2 追加: フッター2列・印刷 ===== */
.foot-grid ul.cols{columns:2;column-gap:18px}
@media print{
  body{background:#fff}
  .site-head,.site-foot,.gnav,.crumb,.ad-slot,.theme-btn,.btn-row,.tool-filter{display:none !important}
  .card,.tool-card{box-shadow:none}
}
.age{color:var(--ink-soft)}