/*
Theme Name: Kosatsunote
Description: コウサツノート専用テーマ。モノクロベース+赤差し色。事実と考察を分ける考察ブログのためのデザイン。
Author: Roy / ORACLE
Version: 1.0
*/
:root{--bg:#0e0e10;--bg2:#161618;--line:#2c2c30;--txt:#eceae6;--gray:#9a9a9a;--red:#a42d26;--paper:#f5f3ef;--ink:#141414}
*{margin:0;box-sizing:border-box}
body{background:var(--bg);color:var(--txt);font-family:"Zen Kaku Gothic New",sans-serif;line-height:1.95;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:"Shippori Mincho",serif}
a{color:inherit}
img{max-width:100%;height:auto}
.wrap{max-width:1060px;margin:0 auto;padding:0 20px}
/* header */
.site-head{position:sticky;top:0;z-index:9;background:rgba(14,14,16,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hd{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:12px}
.hd .logo img{height:30px;display:block}
.gnav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.gnav::-webkit-scrollbar{display:none}
.gnav a{color:var(--gray);text-decoration:none;font-size:13px;letter-spacing:.08em;padding:8px 12px;white-space:nowrap}
.gnav a:hover,.gnav .current-menu-item a{color:var(--txt);border-bottom:2px solid var(--red)}
/* hero */
.hero{position:relative;border-bottom:1px solid var(--line);overflow:hidden}
.hero .art{width:100%;height:56vw;max-height:440px;min-height:260px;display:block;object-fit:cover}
.hero-t{position:absolute;inset:auto 0 0 0;padding:90px 0 30px;background:linear-gradient(transparent,rgba(14,14,16,.96))}
.tag{display:inline-block;font-size:10px;letter-spacing:.28em;padding:5px 12px 4px 14px;border:1px solid var(--red);color:var(--txt);margin-bottom:12px;text-decoration:none}
.hero-t .t{font-size:clamp(22px,4.2vw,36px);line-height:1.55;color:#fff;font-weight:700}
.hero-t .t a{text-decoration:none}
.hero-t .m{color:var(--gray);font-size:13px;margin-top:8px}
/* grid */
.sec{padding:52px 0}
.sec-h{font-family:"Shippori Mincho",serif;font-size:19px;letter-spacing:.16em;margin-bottom:26px;display:flex;align-items:center;gap:14px}
.sec-h:after{content:"";height:1px;background:var(--line);flex:1}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px}
.card{background:var(--bg2);border:1px solid var(--line);display:block;text-decoration:none;color:var(--txt);transition:.25s;overflow:hidden}
.card:hover{border-color:var(--red);transform:translateY(-3px)}
.card .thumb{width:100%;height:140px;object-fit:cover;display:block;background:#1a1a1c}
.card .b{padding:15px 16px 18px}
.card h3{font-size:15px;line-height:1.65;color:#fff;font-weight:700}
.card .m{font-size:11px;color:var(--gray);margin-top:8px;letter-spacing:.12em}
.card .m b{color:var(--red);font-weight:500}
/* article */
.article-bg{background:var(--paper);color:var(--ink)}
.article{max-width:720px;margin:0 auto;padding:56px 20px 64px}
.crumb{font-size:11px;color:#8b857b;margin-bottom:20px;letter-spacing:.05em}
.crumb a{color:#8b857b}
.article h1.title{font-size:clamp(21px,3.4vw,28px);line-height:1.6;margin-bottom:10px}
.pmeta{font-size:12px;color:#8b857b;margin-bottom:30px;letter-spacing:.08em}
.article h2{font-size:clamp(19px,3vw,25px);line-height:1.6;margin:38px 0 8px;padding-left:14px;border-left:4px solid var(--red)}
.article h3{font-size:17px;margin:30px 0 6px}
.article p{margin:16px 0;font-size:15.5px}
.article table{border-collapse:collapse;width:100%;margin:22px 0;font-size:13.5px}
.article th,.article td{border:1px solid #d8d3c8;padding:8px 10px;text-align:left}
.article th{background:#eae6dd;font-weight:700}
.article a{color:var(--red)}
.kousatsu{border-left:3px solid var(--red);background:#fff;box-shadow:0 1px 8px rgba(20,20,20,.06);padding:24px 22px 14px 26px;margin:34px 0;position:relative}
.kousatsu:before{content:"考 察";position:absolute;top:-13px;left:14px;background:var(--red);color:#fff;font-family:"Shippori Mincho",serif;font-weight:700;font-size:12px;letter-spacing:.4em;padding:4px 8px 4px 14px}
.imgslot{border:1px dashed #b9b2a6;background:#efece6;color:#8b857b;text-align:center;padding:34px 16px;font-size:12px;letter-spacing:.1em;margin:26px 0}
.cta{display:block;text-align:center;background:var(--red);color:#fff !important;font-weight:700;text-decoration:none;padding:16px;margin:36px 0 4px;letter-spacing:.14em}
.pn{display:flex;gap:14px;margin-top:44px}
.pn a{flex:1;border:1px solid #d8d3c8;padding:14px;text-decoration:none;color:var(--ink);font-size:13px;background:#fff}
.pn a:hover{border-color:var(--red)}
/* footer */
.site-foot{border-top:1px solid var(--line);padding:40px 0 52px;text-align:center}
.site-foot img{height:22px;opacity:.9}
.site-foot p{color:var(--gray);font-size:11px;letter-spacing:.14em;margin-top:14px}
@media(max-width:640px){
 .hd{flex-direction:column;align-items:flex-start;padding:12px 0 4px}
 .hd .logo img{height:24px}
 .sec{padding:38px 0}
 .grid{grid-template-columns:1fr 1fr}
 .card .thumb{height:110px}
}
@media(max-width:420px){.grid{grid-template-columns:1fr}.card .thumb{height:150px}}