/* powf.net 共通スタイル — スキン B-03「Dark CAD」（設計ソフトの画面風） */
:root{
  --bg:#1b1f24; --panel:#23272e; --bar:#2b3038; --deep:#111418; --edge:#000;
  --ink:#e6e6e6; --sub:#aab0ba; --dim:#6b7380; --frame:#3a404a;
  --cyan:#4fd1ff; --yellow:#ffd84d; --red:#ff5c5c; --green:#7cfc9a; --blue:#0e639c;
  --sans:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Noto Sans CJK JP","Yu Gothic UI","Meiryo",system-ui,sans-serif;
  --mono:"SFMono-Regular","Consolas","Menlo","DejaVu Sans Mono","Roboto Mono",monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;padding-bottom:40px;font-family:var(--sans);color:var(--ink);font-size:15px;line-height:1.8;
  background-color:var(--bg);
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:80px 80px,80px 80px,16px 16px,16px 16px}
a{color:inherit}
.mono{font-family:var(--mono)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ===== メニューバー＋リボン ===== */
.cad-top{position:sticky;top:0;z-index:30}
.menubar{display:flex;align-items:center;gap:22px;height:36px;padding:0 16px;background:var(--bar);border-bottom:1px solid var(--edge);font-size:13px;color:#c9ced6;overflow-x:auto;scrollbar-width:none;white-space:nowrap}
.menubar::-webkit-scrollbar{display:none}
.menubar .brand{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-weight:700;color:var(--red);text-decoration:none;letter-spacing:.06em}
.menubar .brand svg{flex:0 0 auto}
.menubar nav{display:flex;gap:20px}
.menubar nav a{text-decoration:none}
.menubar nav a:hover,.menubar nav a[aria-current]{color:#fff}
.menubar .file{margin-left:auto;font-family:var(--mono);font-size:12px;color:var(--dim)}
.ribbon{display:flex;gap:4px;padding:7px 14px;background:var(--panel);border-bottom:1px solid var(--edge);overflow-x:auto;scrollbar-width:none}
.ribbon::-webkit-scrollbar{display:none}
.ribbon span,.ribbon a{flex:0 0 auto;border:1px solid var(--frame);padding:4px 13px;font-size:12px;color:#c9ced6;border-radius:3px;text-decoration:none;line-height:1.6}
.ribbon .on{background:var(--blue);color:#fff;border-color:var(--blue)}
.ribbon a:hover{border-color:var(--cyan);color:#fff}
.ribbon .sep{border:0;padding:0;width:1px;background:var(--frame);margin:2px 6px}

/* ===== 作業領域（キャンバス＋レイヤーパネル） ===== */
.cad{display:grid;grid-template-columns:minmax(0,1fr) 240px;min-height:calc(100vh - 120px)}
.canvas{padding:52px 56px 40px;position:relative;min-width:0}
.panel{background:rgba(35,39,46,.96);border-left:1px solid var(--edge);padding:16px 16px 24px;font-family:var(--mono);font-size:12px;color:#c9ced6}
.panel-in{position:sticky;top:96px}
.panel h2{margin:0 0 8px;font-size:12px;color:#fff;letter-spacing:.08em;font-weight:700}
.panel h2 + ul{margin-bottom:22px}
.panel ul{list-style:none;margin:0;padding:0}
.panel li{display:flex;align-items:center;gap:8px;padding:4px 0}
.panel li i{width:12px;height:12px;display:inline-block;flex:0 0 auto}
.panel li a{text-decoration:none}.panel li a:hover{color:#fff}
.panel .kv li{justify-content:space-between}
.panel .kv li span:first-child{color:var(--dim)}
@media (max-width:1100px){.cad{grid-template-columns:1fr}.panel{display:none}.canvas{padding:40px 32px}}
@media (max-width:600px){.canvas{padding:28px 18px}}

/* ===== ヒーロー ===== */
.cmd-label{font-family:var(--mono);color:var(--cyan);font-size:13px;margin:0;letter-spacing:.04em}
.hero h1{font-size:clamp(34px,5.2vw,66px);font-weight:900;line-height:1.2;color:#fff;margin:12px 0 18px;letter-spacing:.01em}
.hero h1 em{font-style:normal;color:var(--yellow)}
.hero .lead{color:var(--sub);max-width:680px;margin:0}
.hero{position:relative;padding-bottom:10px}

/* ===== セクション ===== */
.sec{margin-top:44px}
.sec-h{display:flex;align-items:baseline;gap:14px;margin:0 0 16px;padding-bottom:8px;border-bottom:1px dashed var(--frame)}
.sec-h .mono{font-size:12px;color:var(--cyan);letter-spacing:.12em}
.sec-h h2{margin:0;font-size:20px;color:#fff}
@media (max-width:600px){.sec-h{flex-direction:column;gap:0}}

.layers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.layer{border:1px solid var(--cyan);padding:20px 22px;background:rgba(27,31,36,.88)}
.layer .no{font-family:var(--mono);font-size:12px;color:var(--cyan)}
.layer h3{margin:6px 0 6px;font-size:18px;color:#fff}
.layer p{margin:0;font-size:13.5px;color:var(--sub)}
.layer:nth-child(2){border-color:var(--yellow)}.layer:nth-child(2) .no{color:var(--yellow)}
.layer:nth-child(3){border-color:var(--red)}.layer:nth-child(3) .no{color:var(--red)}
@media (max-width:900px){.layers{grid-template-columns:1fr}}

.works{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.work{--c:var(--yellow);display:flex;flex-direction:column;border:1px solid var(--c);background:rgba(27,31,36,.9);text-decoration:none;transition:box-shadow .15s ease,transform .15s ease}
.work:hover{box-shadow:0 0 0 1px var(--c),0 0 24px -6px var(--c);transform:translateY(-2px)}
.work .im{height:190px;padding:8px;border-bottom:1px solid var(--c)}
.work .im svg{width:100%;height:100%;display:block}
.work .t{padding:14px 18px 16px;flex:1;display:flex;flex-direction:column}
.work .u{font-family:var(--mono);font-size:12px;color:var(--c)}
.work h3{margin:2px 0 4px;font-size:18px;color:#fff}
.work p{margin:0;font-size:13.5px;color:var(--sub);flex:1}
.work .go{margin-top:10px;font-family:var(--mono);font-size:12px;color:var(--c)}
.work.c-cyan{--c:var(--cyan)}.work.c-green{--c:var(--green)}
@media (max-width:1280px){.works{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:700px){.works{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.work,.work:hover{transition:none;transform:none}}

/* ===== 文書ページ ===== */
.doc{border:1px solid var(--frame);background:rgba(27,31,36,.92);padding:30px 36px}
.doc h1{margin:8px 0 4px;font-size:26px;color:#fff}
.doc .meta{font-family:var(--mono);font-size:12px;color:var(--dim);margin:0 0 18px}
.doc h2{font-size:17px;margin:28px 0 8px;color:#fff;display:flex;gap:10px;align-items:baseline}
.doc h2 .mono{color:var(--yellow);font-size:13px}
.doc p,.doc li{font-size:14.5px;color:#c9ced6}
.doc b{color:#fff}
.doc ul{padding-left:1.3em}
.doc a{color:var(--cyan)}
@media (max-width:600px){.doc{padding:20px 16px}}

/* ===== フッター ===== */
.site-foot{margin-top:56px;padding-top:20px;border-top:1px dashed var(--frame);display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.foot-links{display:flex;gap:18px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;color:#c9ced6}
.foot-links a{text-decoration:none}.foot-links a:hover{color:#fff}
.copy{font-family:var(--mono);font-size:11.5px;color:var(--dim);margin:8px 0 0}
table.tblock{border-collapse:collapse;font-family:var(--mono);font-size:11.5px;color:#c9ced6;background:rgba(17,20,24,.9)}
.tblock td{border:1px solid var(--frame);padding:6px 10px;vertical-align:top}
.tblock b{font-family:var(--sans);font-size:13.5px;color:#fff}
@media (max-width:600px){table.tblock{width:100%}}

/* ===== コマンド行 ===== */
.cmdline{position:fixed;left:0;right:0;bottom:0;z-index:30;height:36px;display:flex;align-items:center;gap:0;background:var(--deep);border-top:1px solid var(--edge);font-family:var(--mono);font-size:12.5px;color:#c9ced6;white-space:nowrap;overflow:hidden}
.cmdline > span{padding:0 14px;border-right:1px solid #2a2f37;height:100%;display:flex;align-items:center}
.cmdline b{color:var(--cyan);font-weight:400;margin-right:8px}
.cmdline .grow{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;display:block;line-height:36px}
.cmdline .caret{display:inline-block;width:7px;height:14px;background:var(--cyan);vertical-align:-2px;margin-left:2px;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
@media (max-width:700px){.cmdline .opt{display:none}}
@media (prefers-reduced-motion:reduce){.cmdline .caret{animation:none}}

/* 十字カーソル（マウス操作の端末だけ） */
.xh{position:fixed;inset:0;pointer-events:none;z-index:5;display:none}
.xh i{position:absolute;background:rgba(255,255,255,.28)}
.xh .h{left:0;right:0;height:1px}.xh .v{top:0;bottom:0;width:1px}
.xh .box{width:12px;height:12px;border:1px solid rgba(255,255,255,.7);background:transparent;margin:-6px 0 0 -6px}
@media (hover:hover) and (pointer:fine){.xh{display:block}}
@media (prefers-reduced-motion:reduce){.xh{display:none}}
.doc .cmd-label{color:var(--cyan)}
@media (max-width:700px){.menubar .file{display:none}.menubar{gap:16px}.menubar nav{gap:14px}}