:root{--bg:#0b1020;--panel:#111827;--panel2:#0f172a;--text:#e5e7eb;--muted:#9ca3af;--line:#243047;--btn:#1f2937;--btn2:#111827;}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP","Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text);
background:linear-gradient(180deg,var(--bg),#050816);}
.app-header{padding:16px 16px 10px;border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(11,16,32,.92);backdrop-filter:saturate(140%) blur(10px);}
.title{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;flex-wrap:wrap}
.app-name{font-size:18px;font-weight:700}
.meta{font-size:12px;color:var(--muted)}.dot{margin:0 6px}
.tabs{display:flex;gap:8px;margin-top:12px}
.tab{border:1px solid var(--line);background:var(--btn2);color:var(--text);padding:10px 12px;border-radius:12px;font-size:14px}
.tab.active{outline:2px solid rgba(147,197,253,.35)}
.app-main{padding:16px;max-width:980px;margin:0 auto}
.view h2{margin:0 0 12px;font-size:18px}
.panel{background:rgba(17,24,39,.9);border:1px solid var(--line);border-radius:16px;padding:14px}
.row{display:grid;grid-template-columns:80px 1fr;gap:10px;align-items:center;margin:10px 0}
.row label{color:var(--muted);font-size:13px}
.select{width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:var(--panel2);color:var(--text);font-size:16px}
.row-inline{display:flex;gap:10px;justify-content:flex-end}
.btn{padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:var(--btn);color:var(--text);font-size:14px}
.btn-ghost{background:transparent}
.result{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.result-card{background:rgba(17,24,39,.7);border:1px solid var(--line);border-radius:16px;padding:14px}
.result-label{color:var(--muted);font-size:12px}
.result-value{font-size:26px;font-weight:800;margin-top:6px}
.hint{color:var(--muted);font-size:12px;margin:10px 4px 0}
.grid2{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width: 860px){.grid2{grid-template-columns:1fr 1fr}}
.hidden{display:none !important}
.app-footer{padding:12px 16px 18px;max-width:980px;margin:0 auto}