/* ===== ありがとNAS — design 4 (mid-tone + category color) shared ===== */
@font-face{font-family:"M PLUS Rounded 1c";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/mplus-rounded-400.woff2") format("woff2");}
@font-face{font-family:"M PLUS Rounded 1c";font-style:normal;font-weight:700;font-display:swap;src:url("../fonts/mplus-rounded-700.woff2") format("woff2");}
@font-face{font-family:"M PLUS Rounded 1c";font-style:normal;font-weight:800;font-display:swap;src:url("../fonts/mplus-rounded-800.woff2") format("woff2");}

:root{
  --accent:#c2708a; --accent-ink:#9c5570; --accent-soft:#f3e9ec;
  --ink:#3f3a44; --ink-soft:#736d78; --line:#ece7ea; --bg:#faf8f7; --card:#fff;
  --radius:14px; --shadow:0 2px 10px rgba(60,40,50,.06); --header-h:58px;
  --tc:#c2708a; --tc-soft:#f3e9ec; --tc-ink:#9c5570;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:72px;-webkit-text-size-adjust:100%;}
body{margin:0;font-family:"M PLUS Rounded 1c","Hiragino Maru Gothic ProN","Hiragino Sans",Meiryo,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.85;font-size:16px;overflow-wrap:break-word;word-break:break-word;}
a{color:var(--accent-ink);text-decoration:none;}
a:hover{opacity:.85;}
img{max-width:100%;height:auto;}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line);}
.hwrap{max-width:1080px;margin:0 auto;min-height:var(--header-h);padding:8px 18px;display:flex;align-items:center;gap:12px;}
.brand{font-weight:800;font-size:1.14rem;color:var(--ink);white-space:nowrap;}
.brand span{color:var(--accent);}
.menu-btn{margin-left:auto;display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;}
.menu-btn span{display:block;width:21px;height:2px;background:var(--accent);border-radius:2px;transition:.25s;}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav{margin-left:auto;display:flex;gap:4px 6px;flex-wrap:wrap;font-size:.88rem;align-items:center;}
.nav a{color:var(--ink-soft);padding:8px 15px;border-radius:8px;font-weight:700;transition:background .15s,color .15s;}
.nav a:hover{background:var(--accent-soft);color:var(--accent-ink);opacity:1;}
.nav a.cta{background:var(--accent);color:#fff;}
.nav a.cta:hover{background:#b25e7c;color:#fff;}

/* hero (index) */
.hero{text-align:center;padding:50px 18px 28px;background:linear-gradient(180deg,#fff,transparent);}
.hero h1{font-size:clamp(1.5rem,4.8vw,2.05rem);margin:0 0 12px;color:var(--ink);line-height:1.5;}
.hero h1 .hl{color:var(--accent-ink);}
.hero p{color:var(--ink-soft);max-width:560px;margin:0 auto 22px;font-size:.98rem;}
.search{display:flex;align-items:center;max-width:500px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:10px;padding:4px 6px 4px 16px;box-shadow:var(--shadow);}
.search .ico{font-size:1rem;margin-right:6px;color:var(--ink-soft);}
.search input{flex:1;min-width:0;border:0;outline:none;font:inherit;font-size:1rem;padding:10px 0;background:transparent;color:var(--ink);}
.search__hint{color:var(--ink-soft);font-size:.78rem;padding:8px 12px;white-space:nowrap;}

/* layout */
.container{max-width:1080px;margin:0 auto;padding:0 18px;}
main{padding:18px 0 56px;}
.sec-title{font-size:1.2rem;margin:30px 0 4px;color:var(--ink);}
.sec-title small{display:block;font-size:.78rem;color:var(--ink-soft);font-weight:400;margin-top:2px;}
#explore{scroll-margin-top:74px;}

/* category tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(155px,1fr));gap:12px;margin:16px 0 6px;}
.tile{background:var(--card);border:1px solid var(--line);border-top:4px solid var(--tc);border-radius:var(--radius);
  padding:16px 12px 14px;text-align:center;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;gap:7px;transition:.15s;}
.tile:hover{border-color:var(--tc);transform:translateY(-2px);box-shadow:0 6px 16px rgba(60,40,50,.12);}
.tile .emoji{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:1.35rem;background:var(--tc-soft);}
.tile .tname{font-weight:700;font-size:.9rem;color:var(--ink);line-height:1.4;}
.tile .tcount{font-size:.72rem;color:#fff;background:var(--tc);border-radius:999px;padding:1px 9px;font-weight:700;}

/* category section */
.cat-section{margin:34px 0 0;scroll-margin-top:74px;}
.cat-head{display:flex;align-items:center;gap:10px;background:var(--tc-soft);border-left:5px solid var(--tc);border-radius:10px;padding:10px 14px;margin-bottom:4px;}
.cat-head .emoji{font-size:1.15rem;}
.cat-head h2{font-size:1.2rem;margin:0;color:var(--ink);}
.cat-head .count{margin-left:auto;font-size:.74rem;color:#fff;background:var(--tc);border-radius:999px;padding:2px 11px;font-weight:700;white-space:nowrap;}
.cat-desc{color:var(--ink-soft);font-size:.86rem;margin:8px 2px 14px;}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(265px,1fr));gap:13px;}
.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 17px 15px 19px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.15s;overflow:hidden;}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--tc);}
.card:hover{border-color:var(--tc);box-shadow:0 6px 16px rgba(60,40,50,.12);transform:translateY(-2px);}
.card .ctag{align-self:flex-start;font-size:.68rem;font-weight:700;color:var(--tc-ink);background:var(--tc-soft);border-radius:999px;padding:2px 9px;margin-bottom:7px;}
.card a.ctitle{font-weight:700;font-size:.98rem;color:var(--ink);line-height:1.5;}
.card a.ctitle:hover{color:var(--tc-ink);opacity:1;}
.card .cdesc{color:var(--ink-soft);font-size:.82rem;margin:7px 0 0;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .cmeta{margin-top:auto;padding-top:10px;font-size:.74rem;color:var(--ink-soft);display:flex;gap:6px;align-items:center;}
.card .cmeta .clock{color:var(--tc-ink);}
.no-results{display:none;text-align:center;color:var(--ink-soft);padding:40px 0;font-size:1rem;}

/* breadcrumb */
.breadcrumb{font-size:.8rem;color:var(--ink-soft);padding:16px 0 0;line-height:1.7;}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb span{margin:0 6px;color:var(--tc);}

/* article */
.article{background:var(--card);border:1px solid var(--line);border-top:4px solid var(--tc);border-radius:var(--radius);
  padding:30px clamp(16px,4vw,48px);margin:14px 0 22px;box-shadow:var(--shadow);}
.article__cat{display:inline-flex;align-items:center;gap:6px;background:var(--tc-soft);color:var(--tc-ink);font-weight:700;font-size:.76rem;padding:4px 13px;border-radius:999px;margin-bottom:14px;}
.article h1{font-size:clamp(1.4rem,5vw,1.95rem);line-height:1.5;margin:0 0 10px;color:var(--ink);}
.affiliate-notice{font-size:.8rem;color:var(--ink-soft);background:#fbf7f2;border:1px solid #efe4d6;border-radius:10px;padding:9px 13px;margin:0 0 22px;}
.affiliate-disclosure{font-size:.82rem;color:var(--ink-soft);background:#fbfafa;border:1px solid var(--line);border-radius:12px;padding:15px 17px;margin:28px 0 0;line-height:1.75;}
.affiliate-disclosure strong{color:var(--accent-ink);}
.article-body{font-size:1rem;}
.article-body h2{font-size:clamp(1.22rem,4.4vw,1.4rem);margin:1.9em 0 .7em;padding:9px 15px;border-left:5px solid var(--tc);
  background:linear-gradient(90deg,var(--tc-soft),transparent);border-radius:0 10px 10px 0;color:var(--ink);}
.article-body h3{font-size:clamp(1.08rem,4vw,1.18rem);margin:1.6em 0 .6em;padding-bottom:5px;border-bottom:2px dotted var(--tc);color:var(--ink);}
.article-body h4{font-size:1.04rem;margin:1.4em 0 .5em;color:var(--ink);}
.article-body p{margin:1em 0;}
.article-body ul,.article-body ol{padding-left:1.4em;margin:1em 0;}
.article-body li{margin:.4em 0;}
.article-body a{color:var(--accent-ink);text-decoration:underline;text-decoration-color:var(--tc);}
.article-body img{border-radius:10px;}
.table-scroll,.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.9rem;display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;}
.article-body th,.article-body td{border:1px solid var(--line);padding:9px 12px;text-align:left;white-space:nowrap;}
.article-body th{background:var(--tc-soft);color:var(--tc-ink);}
.article-body tr:nth-child(even) td{background:#fbfafb;}
.article-body blockquote{border-left:4px solid var(--tc);background:var(--tc-soft);margin:1.2em 0;padding:9px 16px;color:var(--ink-soft);border-radius:0 10px 10px 0;}
.article-body code{background:var(--tc-soft);color:var(--tc-ink);padding:2px 6px;border-radius:5px;font-size:.9em;}
.article-body pre{background:#33303a;color:#f0eef3;padding:15px;border-radius:12px;overflow-x:auto;}
.article-body pre code{background:transparent;color:inherit;padding:0;}

/* related */
.related{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px clamp(16px,4vw,32px);box-shadow:var(--shadow);}
.related h2{font-size:1.15rem;margin:0 0 14px;padding-left:11px;border-left:5px solid var(--tc);color:var(--ink);}
.related ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px;}
.related li a{display:block;padding:12px 14px;border:1px solid var(--line);border-radius:11px;color:var(--ink);font-size:.88rem;line-height:1.5;background:#fff;}
.related li a:hover{border-color:var(--tc);color:var(--tc-ink);background:var(--tc-soft);opacity:1;}
.backtop{text-align:center;margin:24px 0 0;}
.backtop a{display:inline-block;padding:12px 26px;border-radius:999px;background:var(--accent);color:#fff;font-size:.9rem;font-weight:700;box-shadow:var(--shadow);}
.backtop a:hover{background:#b25e7c;opacity:1;}

/* legal / static page */
.page{background:var(--card);border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:var(--radius);padding:30px clamp(18px,4vw,46px);margin:14px 0 22px;box-shadow:var(--shadow);}
.page h1{font-size:clamp(1.5rem,5vw,1.85rem);margin:0 0 6px;color:var(--ink);}
.page .lead{color:var(--ink-soft);margin:0 0 22px;font-size:.95rem;}
.page h2{font-size:1.22rem;margin:1.8em 0 .6em;padding:8px 14px;border-left:5px solid var(--accent);background:linear-gradient(90deg,var(--accent-soft),transparent);border-radius:0 10px 10px 0;color:var(--ink);}
.page h3{font-size:1.05rem;margin:1.4em 0 .5em;color:var(--ink);}
.page p,.page li{font-size:.95rem;}
.page ul,.page ol{padding-left:1.4em;}
.page a{text-decoration:underline;text-decoration-color:var(--accent);}
.page table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:.9rem;}
.page th,.page td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top;}
.page th{background:var(--accent-soft);color:var(--accent-ink);white-space:nowrap;}
.updated{color:var(--ink-soft);font-size:.82rem;}

/* contact form */
.contact-form{display:grid;gap:16px;max-width:560px;margin-top:8px;}
.form-row{display:grid;gap:6px;}
.form-row label{font-size:.9rem;font-weight:700;}
.form-row .req{color:#c2708a;font-size:.8rem;}
.form-row input,.form-row textarea{width:100%;font:inherit;font-size:1rem;padding:12px 14px;border:1px solid var(--line);border-radius:11px;background:#fff;}
.form-row input:focus,.form-row textarea:focus{outline:2px solid var(--accent);border-color:var(--accent);}
.form-submit{justify-self:start;background:var(--accent);color:#fff;border:0;border-radius:999px;padding:13px 32px;font-size:1rem;font-weight:700;cursor:pointer;box-shadow:var(--shadow);}
.form-submit:hover{background:#b25e7c;}
.form-note{font-size:.82rem;color:var(--ink-soft);background:#fbf7f2;border:1px solid #efe4d6;border-radius:11px;padding:12px 14px;}
.form-embed{width:100%;margin:8px 0 4px;}
.form-embed iframe{display:block;width:100%;max-width:760px;height:1400px;border:0;border-radius:13px;background:#fff;}

/* 404 */
.notfound{text-align:center;padding:70px 16px;}
.notfound .code{font-size:4.2rem;font-weight:800;color:var(--accent);line-height:1;}
.notfound .face{font-size:2rem;}
.notfound h1{font-size:1.4rem;margin:14px 0 8px;color:var(--ink);}
.notfound p{color:var(--ink-soft);}

/* footer */
.site-footer{border-top:1px solid var(--line);background:#fff;padding:28px 18px;text-align:center;color:var(--ink-soft);font-size:.82rem;}
.site-footer__inner{max-width:1080px;margin:0 auto;}
.footer-links{display:flex;gap:8px 16px;flex-wrap:wrap;justify-content:center;margin:0 0 12px;}
.footer-links a{color:var(--ink-soft);}
.footer-links a:hover{color:var(--accent);}
.footer-disclosure{font-size:.76rem;max-width:720px;margin:0 auto 10px;line-height:1.7;}

/* mobile */
@media(max-width:760px){
  .menu-btn{display:flex;}
  .nav{position:fixed;top:var(--header-h);left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 16px;margin:0;max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;transform:translateY(-12px);opacity:0;pointer-events:none;transition:transform .2s,opacity .2s;box-shadow:0 12px 24px rgba(60,40,50,.1);}
  .nav.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav a{padding:13px 6px;border-bottom:1px solid var(--line);font-size:.95rem;}
  .nav a.cta{margin-top:12px;text-align:center;border-bottom:0;}
}
@media(max-width:480px){
  body{font-size:15.5px;}
  .tiles{grid-template-columns:repeat(2,1fr);}
  .grid{grid-template-columns:1fr;}
  .related ul{grid-template-columns:1fr;}
  .article{padding:24px 16px;}
  .hero{padding:38px 16px 22px;}
}

.ad-unit{margin:28px 0;overflow-x:auto;display:flex;justify-content:center;}

.editorial-note{font-size:.85rem;color:var(--ink-soft);background:#f6f8fa;border-left:4px solid var(--tc,#c2708a);border-radius:0 8px 8px 0;padding:10px 14px;margin:0 0 18px;line-height:1.75;}
.editorial-note strong{color:var(--ink);}
.footer-ai{font-size:.72rem;color:var(--ink-soft);opacity:.8;max-width:720px;margin:6px auto 0;line-height:1.6;}