/*
Theme Name: AI Knowledge Lab
Theme URI: https://aiknowledge-lab.com
Author: AI Knowledge Lab
Description: AIナレッジ — AI開発ツール特化メディア。VOGUE系モノクロ編集デザインのカスタムテーマ（magazine.html を移植）。
Version: 0.1.0
Requires at least: 6.4
Requires PHP: 8.0
Text Domain: aiknowledge
*/

:root{--ink:#101010;--paper:#ffffff;--gray:#9a9a9a;--acc:#f43000}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:auto}
body{font-family:'Zen Old Mincho',serif;background:var(--paper);color:var(--ink);overflow-x:hidden;cursor:none;-webkit-font-smoothing:antialiased}
.sans{font-family:'Noto Sans JP',sans-serif}
.bd{font-family:'Bodoni Moda',serif}
a{color:inherit;text-decoration:none}
::selection{background:var(--ink);color:#fff}
a:focus-visible{outline:2px solid var(--ink);outline-offset:4px}

/* ===== カーソル ===== */
#cur{position:fixed;z-index:200;width:8px;height:8px;border-radius:50%;background:var(--acc);pointer-events:none;transform:translate(-50%,-50%);opacity:0;transition:opacity .3s}
#curR{position:fixed;z-index:200;width:36px;height:36px;border-radius:50%;border:1px solid var(--ink);pointer-events:none;transform:translate(-50%,-50%);transition:width .3s,height .3s,opacity .3s;opacity:0}
body.curon #cur{opacity:1}
body.curon #curR{opacity:1}
body.hovering #curR{width:70px;height:70px;opacity:.5}
@media(hover:none){#cur,#curR{display:none}body{cursor:auto}}

/* ===== ローダー ===== */
#loader{position:fixed;inset:0;z-index:150;background:var(--paper);display:flex;align-items:center;justify-content:center;transition:opacity .9s ease,visibility .9s}
#loader.done{opacity:0;visibility:hidden;pointer-events:none}
#loader .t{font-family:'Bodoni Moda',serif;font-weight:900;font-size:clamp(40px,8vw,90px);letter-spacing:.02em;overflow:hidden}
#loader .t span{display:inline-block;animation:lup 1.1s cubic-bezier(.2,.7,.2,1) both}
@keyframes lup{from{transform:translateY(110%)}to{transform:none}}

/* ===== マストヘッド ===== */
header{position:fixed;top:0;left:0;right:0;z-index:100;mix-blend-mode:difference;color:#ffffff}
header .in{display:flex;justify-content:space-between;align-items:center;padding:18px 28px;font-family:'Noto Sans JP',sans-serif;font-size:11px;letter-spacing:.24em;font-weight:500}
header .in a:hover{opacity:.6}

/* ===== カバー(FV) ===== */
.cover{position:relative;overflow:visible}
.masthead{font-family:'Bodoni Moda',serif;font-weight:900;font-size:clamp(56px,10.8vw,185px);line-height:.9;letter-spacing:.005em;text-align:center;padding-top:86px;position:relative;z-index:6;white-space:nowrap}
.masthead .line{display:block;overflow:hidden}
.masthead .line span{display:inline-block;transform:translateY(115%)}
.cover-sub{display:flex;justify-content:space-between;max-width:1240px;width:92%;margin:18px auto 0;font-family:'Noto Sans JP',sans-serif;font-size:10.5px;letter-spacing:.3em;position:relative;z-index:6}

.fv-issue{max-width:1240px;width:92%;margin:34px auto 0;display:flex;justify-content:center;gap:26px;font-family:'Noto Sans JP',sans-serif;font-size:10.5px;letter-spacing:.3em;color:var(--gray)}
.fv-issue b{color:var(--ink)}
.fv-grid{max-width:1240px;width:92%;margin:44px auto 96px;display:grid;grid-template-columns:repeat(3,1fr);gap:26px;position:relative}
.fvc{display:block;position:relative}
.fvc .card{background:#fff;border:1px solid #e9e6e0;border-radius:22px;padding:30px 30px 24px;transition:transform .45s cubic-bezier(.2,.7,.2,1),box-shadow .45s;height:100%;display:flex;flex-direction:column}
.fvc:hover .card{transform:translateY(-6px);box-shadow:0 30px 70px rgba(16,16,16,.10)}
.fvc .im{width:72%;margin:6px auto 26px;aspect-ratio:3/4;border-radius:5px;overflow:hidden;box-shadow:0 14px 34px rgba(16,16,16,.16);transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.fvc:hover .im{transform:scale(1.03) rotate(-.4deg)}
.fvc h3{font-size:16.5px;font-weight:700;line-height:1.85;font-family:'Noto Sans JP',sans-serif;letter-spacing:.01em}
.fvc .pub{font-family:'Noto Sans JP',sans-serif;font-size:11.5px;color:var(--gray);margin-top:12px}
.fvc .pub b{color:var(--ink);font-weight:500}
.fvc .sep{border-top:1px solid #e9e6e0;margin:18px 0 14px}
.fvc .pill{display:flex;justify-content:space-between;align-items:center;background:var(--acc);color:#fff;font-family:'Noto Sans JP',sans-serif;font-size:12.5px;font-weight:500;letter-spacing:.06em;padding:12px 18px;border-radius:10px;transition:background .25s}
.fvc:hover .pill{background:#17171a}
.fvc .pill.dis{background:#f0eeea;color:#a5a29b}
.fvc .no{position:absolute;top:-13px;left:16px;font-family:'Bodoni Moda',serif;font-style:italic;font-size:18px;background:var(--paper);padding:0 10px;z-index:2;color:var(--acc)}
/* ミニ表紙(タイポで組む書影) */
.mc{width:100%;height:100%;position:relative;display:flex;flex-direction:column;justify-content:space-between;padding:11%;color:#fff}
.mc::after{content:"";position:absolute;inset:7%;border:1px solid rgba(255,255,255,.5);pointer-events:none}
.mc .t{font-family:'Noto Sans JP',sans-serif;font-size:8px;letter-spacing:.28em;opacity:.85}
.mc .big{font-family:'Bodoni Moda',serif;font-weight:900;font-size:clamp(46px,4.6vw,64px);line-height:.95;text-align:center}
.mc .big i{font-style:italic;font-weight:400}
.mc .sub{font-family:'Noto Sans JP',sans-serif;font-size:9px;letter-spacing:.3em;text-align:center;margin-top:8px}
.mc .ft{font-family:'Noto Sans JP',sans-serif;font-size:7.5px;letter-spacing:.18em;opacity:.8;display:flex;justify-content:space-between}
.mc.blue{background:#1d3bea}
.mc.black{background:#101013}
.mc.cream{background:#efece4;color:var(--ink)}
.mc.cream::after{border-color:rgba(16,16,16,.35)}
.mc.red{background:var(--acc)}
.ring{position:absolute;right:-40px;top:-72px;width:128px;height:128px;z-index:5;animation:spin 16s linear infinite}
.ring text{font-family:'Noto Sans JP',sans-serif;font-size:10.5px;letter-spacing:.35em;fill:var(--ink)}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== セクション見出し ===== */
section{padding:110px 0 90px}
.shead{max-width:1240px;width:92%;margin:0 auto 54px;display:flex;align-items:baseline;justify-content:space-between;border-bottom:1px solid var(--ink);padding-bottom:14px}
.shead .t{font-family:'Noto Sans JP',sans-serif;font-weight:900;font-size:clamp(24px,2.8vw,36px);line-height:1.3}
.shead .t i{font-style:italic;font-weight:400}
.shead .n{font-family:'Noto Sans JP',sans-serif;font-size:10px;letter-spacing:.3em;color:var(--gray)}

/* ===== 記事インデックス(ホバーでサムネ追従) ===== */
.index{max-width:1240px;width:92%;margin:0 auto;position:relative}
.row{display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:20px;padding:26px 12px;border-bottom:1px solid #e9e6e0;position:relative;transition:background .25s,padding .25s;border-radius:10px}
.row:hover{background:#faf9f7;padding-left:20px}
.row .no{font-family:'Bodoni Moda',serif;font-style:italic;font-size:14px;color:var(--gray)}
.row h3{font-family:'Noto Sans JP',sans-serif;font-size:clamp(15px,1.5vw,19px);font-weight:700;line-height:1.85;letter-spacing:.01em}
.row h3 .en{font-family:inherit;font-weight:inherit}
.row .m{font-family:'Noto Sans JP',sans-serif;font-size:10px;letter-spacing:.22em;color:var(--gray);text-align:right}
.row .m b{display:block;color:var(--ink)}

/* ===== アーカイブ(カテゴリ/検索)＝カード3カラム ===== */
.index.idx-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.index.idx-grid .row{display:flex;flex-direction:column;align-items:flex-start;gap:14px;padding:26px 24px 24px;border:1px solid #e9e6e0;border-bottom:1px solid #e9e6e0;border-radius:18px;min-height:216px;transition:transform .4s cubic-bezier(.2,.7,.2,1),box-shadow .4s,background .25s}
.index.idx-grid .row:hover{background:#fff;padding-left:24px;transform:translateY(-5px);box-shadow:0 22px 50px rgba(16,16,16,.09)}
.index.idx-grid .row h3{font-size:16.5px;line-height:1.8}
.index.idx-grid .row .m{text-align:left;margin-top:auto}
.index.idx-grid .row .m b{margin-bottom:5px}
@media(max-width:1080px){.index.idx-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.index.idx-grid{grid-template-columns:1fr;gap:18px}.index.idx-grid .row{min-height:0}}

/* ===== 特集(カテゴリ) ===== */
.cats{max-width:1240px;width:92%;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat{background:#fff;border:1px solid #e9e6e0;border-radius:18px;padding:26px 24px 22px;display:flex;flex-direction:column;gap:13px;transition:transform .4s cubic-bezier(.2,.7,.2,1),box-shadow .4s}
.cat:hover{transform:translateY(-5px);box-shadow:0 22px 50px rgba(16,16,16,.09)}
.cat .ic{width:58px;height:58px;border-radius:12px;overflow:hidden;filter:grayscale(1);transition:filter .4s}
.cat:hover .ic{filter:none}
.cat .ic img{width:100%;height:100%;object-fit:cover}
.cat .en-l{font-family:'Bodoni Moda',serif;font-style:italic;font-size:13px;color:var(--gray)}
.cat .jp{font-family:'Noto Sans JP',sans-serif;font-size:15.5px;font-weight:900}
.cat .ds{font-family:'Noto Sans JP',sans-serif;font-size:11.5px;line-height:1.9;color:var(--gray)}
.cat .ar{margin-top:auto;align-self:flex-end;font-size:14px;color:var(--acc)}

/* ===== AI TOWN バナー ===== */
.town{max-width:1240px;width:92%;margin:0 auto;border:1px solid var(--ink);position:relative;overflow:hidden;display:block}
.town img{width:100%;height:340px;object-fit:cover;filter:grayscale(1);transition:filter .8s,transform .8s;display:block}
.town:hover img{filter:none;transform:scale(1.03)}
.town .ov{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;text-shadow:0 2px 24px rgba(0,0,0,.5)}
.town .ov .b{font-family:'Bodoni Moda',serif;font-weight:900;font-size:clamp(34px,5vw,64px)}
.town .ov .s{font-family:'Noto Sans JP',sans-serif;font-size:11px;letter-spacing:.34em;margin-top:10px}

/* ===== フッター ===== */
footer{padding:90px 0 40px;border-top:1px solid var(--ink);margin-top:60px}
footer .mast{font-family:'Bodoni Moda',serif;font-weight:900;font-size:clamp(40px,9vw,150px);text-align:center;line-height:.95}
footer .cr{text-align:center;font-family:'Noto Sans JP',sans-serif;font-size:10px;letter-spacing:.28em;color:var(--gray);margin-top:34px}

/* ===== リビール ===== */
.rv{opacity:0;transform:translateY(34px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.rv.on{opacity:1;transform:none}

.ak-fallback{max-width:1240px;width:92%;margin:160px auto;font-family:'Noto Sans JP',sans-serif}

@media(max-width:820px){
  .fv-grid{grid-template-columns:1fr;gap:44px}
  .ring{right:0;top:-60px;width:96px;height:96px}
  .ring{left:auto;right:4%;top:10%;width:110px;height:110px}
  .cats{grid-template-columns:1fr 1fr}
}