:root{
  --bg:#080b12;--bg-card:#0d1120;--bg-card2:#111827;
  --cyan:#00f5ff;--magenta:#ff00cc;--yellow:#ffd700;
  --text:#c9d1e0;--text-dim:#5a6a80;
  --border:rgba(0,245,255,.15);--border-hot:rgba(0,245,255,.5);
  --glow-c:0 0 8px #00f5ff,0 0 20px rgba(0,245,255,.4);
  --glow-m:0 0 8px #ff00cc,0 0 20px rgba(255,0,204,.4);
  --fd:'Orbitron',sans-serif;--fm:'Share Tech Mono',monospace;
  --r:4px;--tr:.25s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--fm);line-height:1.7;overflow-x:hidden}
a{color:var(--cyan);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--magenta)}
ul{list-style:none}
button{all:unset;cursor:pointer;box-sizing:border-box;display:inline-block}

/* noise */
.noise{position:fixed;inset:0;z-index:9999;pointer-events:none;
  background:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.04'/%3E%3C/svg%3E");
  opacity:.3;animation:na .2s steps(1) infinite}
@keyframes na{0%{transform:translate(0,0)}25%{transform:translate(-1%,1%)}50%{transform:translate(1%,-1%)}75%{transform:translate(-2%,2%)}100%{transform:translate(2%,-2%)}}
.scanlines{position:fixed;inset:0;z-index:9998;pointer-events:none;
  background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,245,255,.012) 2px,rgba(0,245,255,.012) 4px)}

/* glitch */
.glitch{position:relative}
.glitch::before,.glitch::after{content:attr(data-text);position:absolute;top:0;left:0;width:100%;height:100%}
.glitch::before{color:var(--cyan);clip-path:polygon(0 0,100% 0,100% 35%,0 35%);animation:gt 4s infinite linear alternate-reverse}
.glitch::after{color:var(--magenta);clip-path:polygon(0 65%,100% 65%,100% 100%,0 100%);animation:gb 3.5s infinite linear alternate-reverse}
@keyframes gt{0%,90%{transform:none;opacity:0}91%{transform:translate(-2px,-1px);opacity:.8}93%{transform:translate(2px,1px);opacity:.8}95%,100%{opacity:0}}
@keyframes gb{0%,85%{transform:none;opacity:0}86%{transform:translate(2px,1px);opacity:.8}88%{transform:translate(-2px,-1px);opacity:.8}90%,100%{opacity:0}}

/* nav */
#nav{position:fixed;top:0;left:0;right:0;z-index:1000;height:64px;
  display:flex;align-items:center;justify-content:space-between;padding:0 2rem;
  background:rgba(8,11,18,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:border-color var(--tr)}
#nav.scrolled{border-color:var(--border-hot)}
.nav-logo{font-family:var(--fd);font-size:1.1rem;font-weight:900;color:var(--cyan);letter-spacing:.1em;text-shadow:var(--glow-c);cursor:default}
.nav-links{display:flex;gap:2rem}
.nav-links a{font-size:.72rem;letter-spacing:.15em;color:var(--text-dim);transition:color var(--tr),text-shadow var(--tr)}
.nav-links a:hover{color:var(--cyan);text-shadow:var(--glow-c)}

/* sections */
section{padding:6rem 2rem;max-width:1100px;margin:0 auto}
section#hero{max-width:100%;padding:0}
.sec-hd{display:flex;align-items:baseline;gap:1rem;margin-bottom:3rem;border-bottom:1px solid var(--border);padding-bottom:1rem}
.sec-num{font-size:.72rem;color:var(--magenta);letter-spacing:.2em}
.sec-ttl{font-family:var(--fd);font-size:1.4rem;font-weight:700;color:var(--cyan);letter-spacing:.2em;text-shadow:var(--glow-c)}

/* hero */
#hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding-top:64px;overflow:hidden}
.h-grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(0,245,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(0,245,255,.04) 1px,transparent 1px);
  background-size:48px 48px;animation:gp 20s linear infinite}
@keyframes gp{from{transform:translateY(0)}to{transform:translateY(48px)}}

/* R18モード時の格子色 */
body.r18-mode .h-grid{
  background-image:
    linear-gradient(rgba(255,0,204,.12) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,0,204,.12) 1px,transparent 1px);
}

.h-inner{position:relative;z-index:1}
.h-label{font-size:.72rem;color:var(--text-dim);letter-spacing:.2em;margin-bottom:1.5rem}
.h-title{font-family:var(--fd);font-size:clamp(2.4rem,8vw,5.5rem);font-weight:900;color:var(--cyan);text-shadow:var(--glow-c);letter-spacing:.05em;margin-bottom:1rem}
.h-sub{font-size:clamp(.85rem,2vw,1.05rem);color:var(--magenta);text-shadow:var(--glow-m);min-height:1.7em;margin-bottom:2rem}
.h-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:.75rem;margin-bottom:2.5rem}
.tag{font-size:.68rem;letter-spacing:.12em;padding:.3rem .8rem;border:1px solid var(--magenta);color:var(--magenta);border-radius:var(--r);text-shadow:var(--glow-m);box-shadow:inset 0 0 8px rgba(255,0,204,.08)}
.h-cta{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}
.btn{font-family:var(--fd);font-size:.72rem;font-weight:700;letter-spacing:.15em;padding:.72rem 2rem;border-radius:var(--r);cursor:pointer;transition:all var(--tr)}
.btn-p{background:var(--cyan);color:var(--bg);border:1px solid var(--cyan);box-shadow:var(--glow-c)}
.btn-p:hover{background:transparent;color:var(--cyan);text-shadow:var(--glow-c)}
.btn-o{background:transparent;color:var(--magenta);border:1px solid var(--magenta);box-shadow:var(--glow-m)}
.btn-o:hover{background:var(--magenta);color:var(--bg);text-shadow:none}
.scroll-hint{position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);font-size:.68rem;letter-spacing:.3em;color:var(--text-dim);animation:sb 2s ease-in-out infinite}
@keyframes sb{0%,100%{opacity:.3;transform:translateX(-50%) translateY(0)}50%{opacity:1;transform:translateX(-50%) translateY(6px)}}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.about-text p{margin-bottom:1rem}
.skills-grid{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
.skill-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r);padding:.6rem 1rem;font-size:.72rem;letter-spacing:.08em;transition:border-color var(--tr),box-shadow var(--tr)}
.skill-item:hover{border-color:var(--cyan);box-shadow:var(--glow-c)}
.sk-name{color:var(--cyan)}
.sk-bar-w{margin-top:.3rem;height:3px;background:rgba(0,245,255,.1);border-radius:2px;overflow:hidden}
.sk-bar{height:100%;background:linear-gradient(90deg,var(--cyan),var(--magenta));border-radius:2px;width:0;transition:width 1s ease}

/* works */
.works-filter{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:2rem}
.fbtn{font-family:var(--fm);font-size:.68rem;letter-spacing:.15em;padding:.38rem 1rem;background:transparent;border:1px solid var(--border);color:var(--text-dim);border-radius:var(--r);cursor:pointer;transition:all var(--tr)}
.fbtn:hover,.fbtn.active{border-color:var(--cyan);color:var(--cyan);box-shadow:var(--glow-c)}
.works-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.5rem}
.wcard{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;cursor:pointer;transition:border-color var(--tr),transform var(--tr),box-shadow var(--tr)}
.wcard:hover{border-color:var(--cyan);box-shadow:var(--glow-c);transform:translateY(-4px)}
.wthumb{width:100%;aspect-ratio:4/3;background:var(--bg-card2);display:flex;align-items:center;justify-content:center;font-size:3rem;color:var(--text-dim)}
.wthumb img{width:100%;height:100%;object-fit:cover}
.wbody{padding:1rem}
.wbody h3{font-family:var(--fd);font-size:.82rem;color:var(--cyan);margin-bottom:.4rem}
.wbody p{font-size:.72rem;color:var(--text-dim);margin-bottom:.6rem}
.wtags{display:flex;flex-wrap:wrap;gap:.3rem}
.wtags .tag{font-size:.58rem;padding:.12rem .45rem}

/* workflow */
.wf-list{display:flex;flex-direction:column;gap:1.5rem}
.wf-item{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--magenta);border-radius:var(--r);padding:1.5rem 2rem;transition:border-color var(--tr),box-shadow var(--tr)}
.wf-item:hover{border-left-color:var(--cyan);box-shadow:var(--glow-c)}
.wf-item h3{font-family:var(--fd);font-size:.88rem;color:var(--cyan);margin-bottom:.5rem}
.wf-item p{font-size:.82rem}
.wf-tags{margin-top:.75rem;display:flex;flex-wrap:wrap;gap:.4rem}

/* contact */
.contact-inner{text-align:center}
.contact-copy{margin-bottom:2.5rem}
.social-links{display:flex;justify-content:center;flex-wrap:wrap;gap:1rem}
.slink{display:flex;align-items:center;gap:.5rem;font-size:.78rem;letter-spacing:.1em;padding:.6rem 1.4rem;border:1px solid var(--border);border-radius:var(--r);color:var(--text);transition:all var(--tr)}
.slink:hover{border-color:var(--magenta);color:var(--magenta);box-shadow:var(--glow-m)}
.slink svg{width:16px;height:16px;fill:currentColor}

/* footer */
footer{text-align:center;padding:2rem;font-size:.68rem;color:var(--text-dim);border-top:1px solid var(--border)}

/* lightbox */
.lb{
  position:fixed;
  inset:0;
  z-index:2000;
  background:rgba(8,11,18,.96);

  display:flex;
  justify-content:center;
  align-items:flex-start;

  padding:2rem;

  overflow-y:auto;
}
.lb[hidden]{display:none}
@keyframes fi{from{opacity:0}to{opacity:1}}
.lb-close{position:absolute;top:1.5rem;right:1.5rem;background:none;border:1px solid var(--border);color:var(--text);font-size:1.5rem;width:2.5rem;height:2.5rem;border-radius:var(--r);cursor:pointer;transition:all var(--tr)}
.lb-close:hover{border-color:var(--magenta);color:var(--magenta)}
.lb-content{
  width:100%;
  max-width:900px;   /* ★これが重要 */
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:1.5rem;

  display:flex;
  flex-direction:column;
  gap:1rem;
}
.lb-content img{
  width:100%;
  max-width:100%;
  max-height:70vh;
  object-fit:contain;
}
.lb-info{flex:1}
.lb-info h3{font-family:var(--fd);color:var(--cyan);margin-bottom:1rem}
.lb-info p{font-size:.82rem;margin-bottom:1rem}
#lb-tags{display:flex;flex-wrap:wrap;gap:.4rem}

.tw-feed{margin-top:2.5rem;display:flex;justify-content:center;}
.tw-feed iframe{border-radius:var(--r);border:1px solid var(--border);max-width:600px;width:100%;}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}

#lb-thumbs{
  display:flex;
  gap:4px;
  flex-wrap:nowrap;
  overflow-x:auto;
  justify-content:flex-start;
  align-items:center;
}

.lb-thumb{
  flex:0 0 auto !important;
  width:80px !important;
  height:80px !important;
  max-width:80px;
  max-height:80px;
  overflow:hidden;
  border-radius:6px;
  display:block;
}

.lb-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.lb-thumb:hover{
  transform:translateY(-2px) scale(1.05);
  border-color:var(--cyan);
  box-shadow:0 0 10px rgba(0,245,255,.25);
}

.lb-thumb.active{
  border:1px solid var(--magenta);
  box-shadow:0 0 10px rgba(255,0,204,.4);
  transform:scale(1.08);
}

@media(max-width:768px){
  .about-grid{grid-template-columns:1fr}
  .skills-grid{grid-template-columns:1fr 1fr}
    #nav{
    flex-wrap:wrap;
    height:auto;
    padding:.75rem 1rem;
    gap:.75rem;
    }
  .nav-links{
    width:100%;
    justify-content:center;
    order:3;
  }
  .r18-btn{
    margin-left:auto;
  }
  .lb-content{flex-direction:column}
  .lb-content img{max-width:100%}
    #lb-thumbs{
    gap:6px;
  }
  .lb-thumb{
    width:60px;
    height:60px;
  }
}
}
@media(max-width:480px){
  section{padding:4rem 1.25rem}
  .skills-grid{grid-template-columns:1fr}
}

/* modal */
.modal{
  position:fixed;
  inset:0;
  z-index:5000;

  display:flex;
  justify-content:center;
  align-items:center;

  background:rgba(0,0,0,.85);
  backdrop-filter:blur(8px);
}

.modal[hidden]{
  display:none;
}

.modal-box{
  width:min(500px,90vw);

  background:var(--bg-card);

  border:1px solid var(--cyan);

  border-radius:var(--r);

  padding:2rem;

  text-align:center;

  box-shadow:var(--glow-c);
}

.modal-box h2{
  color:var(--magenta);
  margin-bottom:1rem;

  font-family:var(--fd);
}

.modal-box p{
  margin-bottom:1rem;
}

.modal-actions{
  display:flex;
  justify-content:center;
  gap:1rem;

  margin-top:1.5rem;
}

/* r18 */
.r18-btn{
  padding:.4rem .8rem;
  border:1px solid var(--magenta);
  border-radius:var(--r);
  color:var(--magenta);
  font-size:.7rem;
  letter-spacing:.1em;
  cursor:pointer;
}
.r18-btn.active{
  color:var(--cyan);
  border-color:var(--cyan);
  box-shadow:var(--glow-c);
}
.r18-hidden{
  filter: blur(24px);
  transition: filter .3s ease;
}
#r18-state{
  display:inline-block;
  width:3ch;
  text-align:right;
}