:root{--bg:#0b1220;--panel:#101a2e;--muted:#92a4c8;--text:#e7eefc;--accent:#6ee7ff;--danger:#ff6b6b;--ok:#58f7a7;--border:#203055;--shadow:0 8px 28px rgba(0,0,0,.35);--radius:14px}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;background:radial-gradient(1200px 900px at 20% 10%, #122244 0%, var(--bg) 55%);color:var(--text);
font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
header{position:sticky;top:0;z-index:10;background:rgba(11,18,32,.78);backdrop-filter:blur(10px);border-bottom:1px solid rgba(32,48,85,.65)}
.header-inner{max-width:980px;margin:0 auto;padding:14px 16px;display:flex;gap:12px;align-items:center;justify-content:space-between}
.brand{display:flex;gap:10px;align-items:center}.brand img{width:34px;height:34px;border-radius:10px;box-shadow:var(--shadow)}
.brand .title{line-height:1.1}.brand .title b{display:block;font-size:16px}.brand .title span{display:block;color:var(--muted);font-size:12px}
nav{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.navbtn{border:1px solid var(--border);background:rgba(22,35,61,.55);color:var(--text);padding:8px 10px;border-radius:12px;font-size:13px}
.navbtn.active{outline:2px solid rgba(110,231,255,.35)}
main{max-width:980px;margin:0 auto;padding:16px}
.card{background:linear-gradient(180deg, rgba(16,26,46,.92), rgba(16,26,46,.78));border:1px solid rgba(32,48,85,.75);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px}
.grid{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width:820px){.grid.two{grid-template-columns:1.1fr .9fr}}
h2{margin:0 0 10px 0;font-size:16px}small{color:var(--muted)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.spread{justify-content:space-between}
hr{border:0;border-top:1px solid rgba(32,48,85,.7);margin:12px 0}
label{font-size:13px;color:var(--muted)}input[type="range"]{width:100%}
.pills,.chips{display:flex;gap:8px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:6px;background:rgba(26,42,74,.6);border:1px solid rgba(32,48,85,.75);padding:6px 10px;border-radius:999px;font-size:12px}
.pill .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);opacity:.7}
.chip{background:rgba(26,42,74,.55);border:1px solid rgba(32,48,85,.8);color:var(--text);padding:8px 10px;border-radius:999px;font-size:13px}
.chip.on{background:rgba(36,64,111,.75);border-color:rgba(110,231,255,.35)}
button,select{border:1px solid rgba(32,48,85,.9);background:rgba(22,35,61,.8);color:var(--text);padding:12px 12px;border-radius:14px;font-size:15px}
button.primary{background:linear-gradient(180deg, rgba(110,231,255,.25), rgba(22,35,61,.85));border-color:rgba(110,231,255,.35)}
button.danger{background:rgba(255,107,107,.18);border-color:rgba(255,107,107,.35)}
button:disabled{opacity:.45}
.choice{width:100%;text-align:left;display:flex;justify-content:space-between;align-items:center;gap:10px}
.choice.correct{border-color:rgba(88,247,167,.45);background:rgba(88,247,167,.12)}
.choice.wrong{border-color:rgba(255,107,107,.45);background:rgba(255,107,107,.10)}
.badge{font-size:12px;padding:6px 10px;border-radius:999px;border:1px solid rgba(32,48,85,.8);background:rgba(16,26,46,.55);color:var(--muted)}
.badge.ok{color:var(--ok);border-color:rgba(88,247,167,.35)}
.badge.no{color:var(--danger);border-color:rgba(255,107,107,.35)}
textarea{width:100%;min-height:120px;resize:vertical;background:rgba(10,16,28,.6);border:1px solid rgba(32,48,85,.75);border-radius:14px;color:var(--text);padding:10px;font-size:13px}
pre{white-space:pre-wrap;font-family:inherit}