:root{--bg:#10131f;--panel:#1a1f33;--line:#2c3350;--text:#f5f6fb;--muted:#a3abc7;--accent:#ffcf33;--accent2:#ff5c7a}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Hiragino Sans","Yu Gothic UI",Meiryo,sans-serif}
a{color:inherit;text-decoration:none}
header{display:flex;align-items:center;gap:16px;padding:14px 24px;border-bottom:1px solid var(--line)}
.logo{font-weight:900;font-size:24px;letter-spacing:.02em;color:var(--accent)}
.logo b{color:var(--accent2)}
.nav{margin-left:auto;color:var(--muted);font-size:14px}
.account{font-size:14px}
.account .note{color:var(--accent2);margin-right:8px}
.account .login{background:var(--accent);color:#111;border-radius:999px;padding:8px 14px;font-weight:700}
.account button{font:inherit;color:inherit;background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:6px 12px;cursor:pointer}
main{max-width:1120px;margin:auto;padding:24px}
.hero{border-radius:18px;padding:36px;background:linear-gradient(120deg,#3a2bbd,#d9386f 70%,#ff9d3c);margin-bottom:28px}
.hero h1{margin:0 0 8px;font-size:clamp(26px,5vw,42px)}
.hero p{margin:0 0 18px}
.hero a{display:inline-block;background:#fff;color:#111;border-radius:999px;padding:11px 22px;font-weight:800}
h2{font-size:19px;margin:24px 0 12px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px}
.card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.card img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;object-position:center 70%}
.card img.wide{object-fit:contain;object-position:center;background:#000}
.card .t{padding:9px 11px 11px;font-weight:700;font-size:14px}
.card small{display:block;color:var(--muted);font-weight:400;margin-top:2px}
.player{background:#000;border:1px solid var(--line);border-radius:14px;overflow:hidden;margin:auto;max-width:100%}
.player iframe{display:block;width:100%;height:100%;border:0}
.player.landscape{aspect-ratio:16/9;max-height:calc(100vh - 120px);min-height:560px}
.player.portrait{aspect-ratio:9/16;height:calc(100vh - 120px);min-height:480px}
.meta{margin-top:14px}
.meta h1{font-size:22px;margin:0 0 6px}
.meta p{color:var(--muted);font-size:14px;margin:4px 0}
.doc{max-width:760px;line-height:1.8}
footer{max-width:1120px;margin:auto;padding:24px;color:var(--muted);font-size:13px}
@media(max-width:600px){header{padding:12px 16px;gap:10px}main{padding:16px}.hero{padding:24px}.player.portrait{height:auto;width:100%;min-height:0}.player.landscape{aspect-ratio:auto;height:calc(100vh - 100px);max-height:none;min-height:480px}}