:root{--bg:#0e1424;--bg2:#151d33;--fg:#f2efe8;--mut:#a9b0c2;--acc:#ff8a3d;--acc2:#3cc8c8;--card:#1a2340;--line:#2a3456}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:"Noto Sans JP",system-ui,sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:var(--acc2)}
img,video{max-width:100%;display:block}
.nav{position:fixed;top:0;left:0;right:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 20px;background:rgba(14,20,36,.82);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.logo{color:var(--fg);text-decoration:none;font-weight:900;font-size:18px;white-space:nowrap}
.logo span{color:var(--acc);margin-left:4px}
.nav nav{display:flex;gap:16px;overflow-x:auto}
.nav nav a{color:var(--mut);text-decoration:none;font-size:14px;white-space:nowrap}
.nav nav a:hover{color:var(--fg)}
.hero{position:relative;min-height:92vh;display:flex;align-items:flex-end;overflow:hidden}
.hero video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.75}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,20,36,.2) 0%,rgba(14,20,36,.3) 45%,var(--bg) 100%)}
.hero-text{position:relative;z-index:1;max-width:1080px;margin:0 auto;width:100%;padding:0 20px 9vh}
.kicker{color:var(--acc);font-weight:700;letter-spacing:.15em;margin:0}
.hero h1{font-size:clamp(28px,5.5vw,56px);line-height:1.3;margin:.3em 0;font-weight:900}
.hero p{color:#dfe3ee;max-width:640px}
.btn{display:inline-block;margin-top:12px;padding:12px 26px;border-radius:999px;background:var(--acc);color:#1a1205;font-weight:700;text-decoration:none}
.btn:hover{filter:brightness(1.08)}
.wrap{max-width:1080px;margin:0 auto;padding:72px 20px}
.center{text-align:center}
h2{font-size:clamp(24px,3.6vw,34px);margin:0 0 20px;font-weight:900}
h2::after{content:"";display:block;width:48px;height:4px;background:var(--acc);border-radius:2px;margin-top:10px}
.center h2::after{margin-left:auto;margin-right:auto}
.lead{font-size:18px;color:#dfe3ee}
.cols3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.card h3{margin:0 0 6px;color:var(--acc2);font-size:18px}
.card p{margin:0;color:var(--mut)}
.work{display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:center;margin:28px 0 48px}
.work.rev{grid-template-columns:1fr 1.1fr}
.work.rev img{order:2}
.work img{border-radius:14px;border:1px solid var(--line);width:100%;aspect-ratio:16/10;object-fit:cover}
.work h3{font-size:22px;margin:4px 0 8px}
.work p,.work li{color:#d4d8e4}
.work ul{padding-left:1.2em;margin:8px 0 0}
.tag{display:inline-block;margin:0;padding:2px 12px;border-radius:999px;font-size:12px;font-weight:700;background:rgba(60,200,200,.15);color:var(--acc2)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.grid figure{margin:0;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.grid figure.wide{grid-column:1/-1}
.grid img{width:100%;aspect-ratio:16/10;object-fit:cover}
.grid figure.wide img{aspect-ratio:auto}
.grid figcaption{padding:8px 12px;font-size:13px;color:var(--mut)}
.sns{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:20px}
.sns-btn{display:flex;flex-direction:column;align-items:center;min-width:140px;padding:14px 18px;border-radius:12px;background:var(--card);border:1px solid var(--line);color:var(--fg);text-decoration:none;font-weight:700}
.sns-btn small{font-weight:400;color:var(--mut);font-size:12px}
.sns-btn[aria-disabled=true]{opacity:.6;pointer-events:none}
.sns-btn.yt{border-color:#e33}.sns-btn.x{border-color:#999}.sns-btn.ig{border-color:#d4458f}.sns-btn.tt{border-color:#25f4ee}
footer{border-top:1px solid var(--line);padding:28px 20px 40px;text-align:center;color:var(--mut)}
footer .small{font-size:12px;max-width:720px;margin:6px auto 0}
/* 開発記録 */
.post{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 24px;margin:18px 0}
.post time{color:var(--acc);font-weight:700;font-size:14px}
.post h3{margin:2px 0 10px;font-size:20px}
.post ul{padding-left:1.2em;margin:0;color:#d4d8e4}
.post li{margin:4px 0}
.post img{border-radius:10px;margin-top:12px;border:1px solid var(--line)}
.back{display:inline-block;margin-top:8px;color:var(--mut)}
@media (max-width:760px){
  .nav nav{gap:12px}.nav nav a{font-size:13px}
  .work,.work.rev{grid-template-columns:1fr}.work.rev img{order:0}
  .wrap{padding:56px 16px}
  .hero-text{padding:0 16px 8vh}
}