:root{--bg:#f4f6f8;--panel:#ffffff;--ink:#1a2332;--ink-dim:#5a6578;--accent:#2e75b6;--line:#d8dee8;--danger-bg:#fff5f5;--danger-border:#e5534b;--sans:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;--mono:Menlo,Consolas,monospace}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--sans);color:var(--ink);background:linear-gradient(180deg,#e8eef5 0,var(--bg) 240px);min-height:100vh}.page{max-width:720px;margin:0 auto;padding:48px 20px 64px}.header{margin-bottom:24px}.eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.08em;color:var(--accent);margin-bottom:8px}h1{font-size:1.75rem;line-height:1.3;margin-bottom:10px}.lead{color:var(--ink-dim);line-height:1.7}.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:0 8px 24px rgba(26,35,50,.06)}.card-error{background:var(--danger-bg);border-color:var(--danger-border)}.card h2{font-size:1rem;margin-bottom:16px}.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.stats div{border:1px solid var(--line);border-radius:8px;padding:12px 14px;background:#fafbfc}.stats dt{font-size:.8rem;color:var(--ink-dim);margin-bottom:4px}.stats dd{font-size:1.5rem;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.meta{margin-top:16px;font-size:.85rem}.hint,.meta{color:var(--ink-dim)}.hint{margin-top:12px;font-size:.8rem;line-height:1.6}.mono{font-size:.85rem;word-break:break-all}.mono,code{font-family:var(--mono)}code{font-size:.9em;background:#eef2f7;padding:.1em .35em;border-radius:4px}