:root{--bg:#0b0d10;--surface:#12161c;--card:#0e1318;--text:#e8eef6;--muted:#9db0c2;--accent:#5eead4;--accent-2:#7c83ff;--border:rgba(255,255,255,.08);--container:1120px;--radius:12px;--shadow:0 6px 20px rgba(0,0,0,.35);--focus:0 0 0 3px rgba(94,234,212,.35)}*,*::before,*::after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP","Yu Gothic UI","YuGothic","Meiryo",sans-serif;line-height:1.7;color:var(--text);background:radial-gradient(1200px 800px at 10% -10%,rgba(124,131,255,.18),transparent 40%) , radial-gradient(900px 600px at 100% 10%,rgba(94,234,212,.15),transparent 35%) , var(--bg)}img,svg{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}a:focus-visible{outline:var(--focus);border-radius:8px}.container{max-width:var(--container);padding:0 20px;margin:0 auto}.header{position:sticky;top:0;z-index:100;backdrop-filter:saturate(1.2) blur(8px);-webkit-backdrop-filter:saturate(1.2) blur(8px);background:linear-gradient(to bottom,rgba(11,13,16,.8),rgba(11,13,16,.6));border-bottom:1px solid var(--border)}.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}.site-title{font-weight:700;letter-spacing:.2px}.menu{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.menu a{padding:8px 10px;border-radius:8px;color:var(--muted);transition:color .2s ease , background-color .2s ease}.menu a:hover{color:var(--accent);background:rgba(94,234,212,.08)}.menu a:focus-visible{outline:var(--focus)}.hero{margin-top:32px;padding:48px 24px;background:linear-gradient(135deg,rgba(124,131,255,.15),rgba(94,234,212,.12));border:1px solid var(--border);border-radius:16px}.hero h1{margin:0 0 6px;font-size:2rem;letter-spacing:.2px}.hero p{margin:0;color:var(--muted)}.hero-actions{margin-top:16px}.btn{display:inline-block;padding:10px 16px;border-radius:10px;background:linear-gradient(180deg,var(--accent),#3fd7c3);color:#0a0d11;font-weight:600;box-shadow:0 6px 14px rgba(94,234,212,.25);transform:translateY(0);transition:transform .15s ease , box-shadow .2s ease , filter .2s ease}.btn:hover{transform:translateY(-1px);filter:saturate(1.05);box-shadow:0 10px 20px rgba(94,234,212,.3)}.btn:active{transform:translateY(0)}.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--border);box-shadow:none}.btn.secondary:hover{background:rgba(255,255,255,.04)}.section{margin-top:48px}.section-title{margin:0 0 16px;font-size:1.4rem;color:var(--text)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(220px,45%),1fr));gap:16px}.card{display:block;padding:16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);transition:transform .18s ease , box-shadow .18s ease , border-color .18s ease}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(94,234,212,.25)}.card h3{text-align:center;margin:10px 0 6px;font-size:1.1rem}.card p{text-align:center;margin:0;color:var(--muted)}.placeholder{aspect-ratio: 16 / 9;background:transparent;border:1px dashed var(--border);border-radius:10px;display:grid;place-items:center;color:var(--muted);font-size:.9rem}.thumb{width:88px;height:88px;aspect-ratio: 1 / 1;object-fit:cover;border-radius:16px;border:1px solid var(--border);background:transparent;display:block;margin:6px auto 12px}.footer{margin-top:48px;padding:24px 0 40px;border-top:1px solid var(--border);color:var(--muted)}.screen-reader-text{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}