:root{
  --bg:#0f1115; --surface:#181b22; --surface2:#20242d; --text:#eef0f4; --muted:#a3a9b6;
  --accent:#ff5c8a; --accent2:#7c5cff; --line:#2a2f3a; --radius:16px;
  --font: "Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Noto Sans CJK JP","Yu Gothic UI",Meiryo,system-ui,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.75;font-size:16px}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;color:#000;padding:8px;z-index:99}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* header */
.site-header{position:sticky;top:0;z-index:10;background:rgba(15,17,21,.85);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:60px}
.brand{font-weight:800;font-size:1.15rem;text-decoration:none;letter-spacing:.02em;white-space:nowrap;
  background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav{display:flex;gap:2px}
.nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 10px;border-radius:10px;text-decoration:none;font-size:.9rem;color:var(--muted);font-weight:600}
.nav a:hover,.nav a[aria-current="page"]{color:var(--text);background:var(--surface2)}
.nav a.nav-support{color:var(--accent)}

/* hero */
.hero{padding:28px 0 12px}
.hero h1{font-size:clamp(1.4rem,5vw,2.2rem);line-height:1.4;margin:0 0 8px}
.hero p{color:var(--muted);margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;border-radius:999px;
  font-weight:700;text-decoration:none;border:1px solid var(--line);background:var(--surface2);color:var(--text);font-size:.95rem;cursor:pointer;font-family:inherit}
.btn:hover{filter:brightness(1.15)}
.btn-primary{background:linear-gradient(90deg,var(--accent),var(--accent2));border:0;color:#fff}
.btn-x{background:#000;border-color:#333}
.btn-block{width:100%}

/* tag filter */
.tags{display:flex;gap:8px;overflow-x:auto;padding:12px 0 4px;scrollbar-width:none}
.tags::-webkit-scrollbar{display:none}
.tag{flex:0 0 auto;min-height:40px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--muted);font:inherit;font-size:.85rem;cursor:pointer}
.tag[aria-pressed="true"]{background:var(--text);color:var(--bg);border-color:var(--text)}
.tag-sm{display:inline-block;font-size:.75rem;color:var(--muted);background:var(--surface2);padding:2px 10px;border-radius:999px;margin:0 6px 6px 0;text-decoration:none}

/* grid */
.section-title{font-size:1.1rem;margin:24px 0 12px}
.grid{display:grid;grid-template-columns:1fr;gap:16px;padding-bottom:16px}
@media(min-width:600px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:960px){.grid{grid-template-columns:repeat(3,1fr)}}
.card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;transition:transform .15s}
.card:hover{transform:translateY(-2px)}
.card-body{padding:12px 14px 14px}
.card-title{font-size:1rem;font-weight:700;margin:0 0 4px;line-height:1.5}
.card-meta{font-size:.8rem;color:var(--muted)}
.badge{display:inline-block;font-size:.7rem;font-weight:700;padding:1px 8px;border-radius:6px;margin-left:6px;vertical-align:middle}
.badge-long{background:rgba(255,92,138,.15);color:var(--accent)}

/* thumbnail / player */
.thumb{position:relative;aspect-ratio:16/9;background:var(--surface2);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb .play{position:absolute;inset:0;display:grid;place-items:center}
.thumb .play span{width:64px;height:64px;border-radius:50%;background:rgba(0,0,0,.6);display:grid;place-items:center;border:2px solid rgba(255,255,255,.85)}
.thumb .play span::after{content:"";border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:5px}
.sample{display:grid;place-items:center;text-align:center;color:var(--muted);font-size:.85rem;
  background:repeating-linear-gradient(135deg,#1c2029 0 14px,#222733 14px 28px)}
.sample b{display:block;font-size:1.4rem;color:var(--text);letter-spacing:.2em}
.src-x{display:grid;place-items:center;background:#000;color:#fff;font-weight:700}
.player{position:relative;width:100%;aspect-ratio:16/9;background:#000;border-radius:var(--radius);overflow:hidden;border:0;padding:0;cursor:pointer;display:block;color:inherit;font:inherit}
.player.vertical{aspect-ratio:9/16;max-width:380px;margin:0 auto}
.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.player.thumb{cursor:pointer}
.x-embed{max-width:550px;margin:0 auto}

/* detail */
.back{display:inline-flex;align-items:center;min-height:44px;color:var(--muted);text-decoration:none;font-size:.9rem;margin-top:8px}
.detail{display:grid;gap:20px;padding:8px 0 24px}
@media(min-width:960px){.detail{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);align-items:start}}
.detail h1{font-size:clamp(1.25rem,4vw,1.6rem);line-height:1.45;margin:4px 0 6px}
.desc{white-space:pre-line;color:#d6d9e0;margin:12px 0}
.cta{background:linear-gradient(135deg,rgba(255,92,138,.12),rgba(124,92,255,.12));border:1px solid rgba(255,92,138,.35);border-radius:var(--radius);padding:18px}
.cta h2{font-size:1rem;margin:0 0 4px}
.cta p{font-size:.85rem;color:var(--muted);margin:0 0 12px}
.cta .sub{display:block;text-align:center;margin-top:10px;font-size:.85rem;color:var(--muted);min-height:32px}
.share{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}

/* panels */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:20px 0}
.panel h2{margin:0 0 8px;font-size:1.2rem}
.profile{display:flex;gap:16px;align-items:flex-start}
.avatar{flex:0 0 72px;width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));display:grid;place-items:center;font-size:1.8rem;font-weight:800;color:#fff;object-fit:cover}
.pre{white-space:pre-line}
.support-btns{display:grid;gap:10px;margin-top:14px}
@media(min-width:600px){.support-btns{grid-template-columns:1fr 1fr}}
.notice{color:var(--muted);padding:24px 0}
.empty{color:var(--muted);text-align:center;padding:40px 0}

/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:32px;padding:24px 0 calc(24px + env(safe-area-inset-bottom))}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:8px}
.copy{color:var(--muted);font-size:.8rem;margin:0}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
.player.sample{display:grid;place-items:center;text-align:center;cursor:default;color:var(--muted);
  background:repeating-linear-gradient(135deg,#1c2029 0 14px,#222733 14px 28px)}

/* 小さい画面でヘッダーが折り返さないように */
.nav a{white-space:nowrap}
@media (max-width:420px){
  .brand{font-size:1rem}
  .nav a{padding:0 7px;font-size:.82rem}
}

/* アップロード動画（ネイティブ再生） */
.player.native{cursor:default}
.player.native video{position:absolute;inset:0;width:100%;height:100%;background:#000;object-fit:contain}
.src-none{background:linear-gradient(135deg,#1c2029,#2a2140)}