:root{--paper:#F5F0E6;--surface:#FFFDF8;--ink:#1F2A44;--muted:#6B6F7A;--line:#E3DCCB;--gold:#B89150;--navy:#1F2A44;--ok:#2E7D5B}
*{box-sizing:border-box}
html,body{margin:0;background:var(--paper);color:var(--ink);font-family:"Hiragino Sans","Noto Sans JP",system-ui,sans-serif;font-size:16px;line-height:1.8}
a{color:var(--navy)}
header.top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line);background:var(--surface)}
header.top .brand{font-weight:700;letter-spacing:.04em}
header.top .brand small{display:block;font-weight:400;font-size:11px;color:var(--muted)}
header.top .who{font-size:13px;color:var(--muted)}
main{max-width:760px;margin:0 auto;padding:20px 16px 60px}
.eyebrow{color:var(--gold);font-size:12.5px;font-weight:700;letter-spacing:.08em;margin:0 0 4px}
h1{font-size:24px;line-height:1.4;margin:0 0 10px}
h2{font-size:18px;margin:28px 0 8px;padding-left:10px;border-left:4px solid var(--gold)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:14px 0}
.card.weekly{border-color:var(--gold);background:#FFF9EC}
.card.weekly .label{color:var(--gold);font-weight:700;font-size:13px;margin:0 0 4px}
.card.weekly p{margin:0;font-size:17px}
.video{position:relative;width:100%;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#000;margin:12px 0}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.btnrow{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:12px 0}
button,.btn{font:inherit;font-weight:700;padding:10px 18px;border:0;border-radius:999px;background:var(--gold);color:#fff;cursor:pointer}
button.ghost,.btn.ghost{background:transparent;color:var(--navy);border:1.5px solid var(--line)}
button.done{background:var(--ok)}
.codenote{font-size:12.5px;color:var(--muted)}
.prompt{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-size:15px}
.prompt h2{font-size:16px;margin:18px 0 6px;border:0;padding:0}
.prompt h3{font-size:15px;margin:14px 0 4px}
.prompt table{border-collapse:collapse;width:100%;font-size:14px;margin:8px 0}
.prompt th,.prompt td{border:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
.prompt pre{background:#F3EFE6;padding:10px 12px;border-radius:8px;overflow:auto;font-size:13px}
.prompt code{font-size:13px}
.list{list-style:none;padding:0;margin:0}
.list li{display:flex;gap:12px;align-items:center;padding:12px 4px;border-bottom:1px solid var(--line)}
.list .n{width:34px;color:var(--gold);font-weight:700;flex:none}
.list .t{flex:1}
.list .t small{display:block;color:var(--muted);font-size:12.5px}
.list .st{font-size:12.5px;color:var(--muted);flex:none}
.list .st.done{color:var(--ok);font-weight:700}
.list li.soon{opacity:.55}
.navrow{display:flex;justify-content:space-between;gap:10px;margin:28px 0 0;font-size:14px}
.muted{color:var(--muted);font-size:13px}
.gate{max-width:520px;margin:12vh auto;padding:28px 24px;background:var(--surface);border:1px solid var(--line);border-radius:14px}
input[type=text]{font:inherit;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;width:100%}
table.prog{border-collapse:collapse;font-size:12.5px;width:100%}
table.prog th,table.prog td{border:1px solid var(--line);padding:4px 6px;text-align:center;white-space:nowrap}
table.prog th.name,table.prog td.name{text-align:left;position:sticky;left:0;background:var(--surface)}
table.prog td.o{background:#FFF3D6}
table.prog td.d{background:#DDF0E5;font-weight:700}
.wrap{overflow:auto}
@media(prefers-color-scheme:dark){:root{--paper:#15181F;--surface:#1D2129;--ink:#ECE7DC;--muted:#A7A49C;--line:#343945;--navy:#ECE7DC}.card.weekly{background:#2A2516}.prompt pre{background:#262B35}table.prog td.o{background:#3B3320}table.prog td.d{background:#1F3A2C}}