:root{--mk-ink:#1a1a1a;--mk-strong:#404040;--mk-sub:#5e5e5e;--mk-muted:#989898;--mk-faint:#b7b7b7;--mk-line:#edeff3;--mk-panel:#ffffff;--mk-page:#f6f8fb;--mk-brand:#2b7bd7;--mk-warn:#c03b3f;--mk-grad:linear-gradient(135deg,#20bdff,#5433ff);--mk-font:"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,sans-serif;--mk-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;--mk-ease:cubic-bezier(0.2,0.7,0.2,1)}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--mk-page);color:var(--mk-ink);font-family:var(--mk-font);-webkit-font-smoothing:antialiased}a{color:inherit}.mk-viewport{min-height:100svh;display:flex;flex-direction:column;align-items:center}.mk-header{justify-content:center;padding:26px 20px 0}.mk-header,.mk-main{width:100%;display:flex}.mk-main{flex:1 1;flex-direction:column;align-items:stretch;gap:20px;padding:28px 20px 40px}.mk-footer{padding:0 0 26px;font-size:10.5px;color:var(--mk-faint)}.mk-eyebrow{font-family:var(--mk-mono);font-size:10px;font-weight:500;letter-spacing:.3em;padding-left:.3em;color:var(--mk-muted);text-transform:uppercase}.mk-card{background:var(--mk-panel);border:1px solid var(--mk-line);border-radius:16px;padding:26px 24px;box-shadow:0 1px 2px rgba(16,24,40,.04)}.mk-h1{margin:0;font-size:22px;font-weight:800;letter-spacing:-.02em;color:var(--mk-ink);line-height:1.35}.mk-lead{margin:0;font-size:12.5px;line-height:1.9;color:var(--mk-sub)}.mk-actions{display:flex;flex-direction:column;gap:10px}.mk-btn{display:flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 20px;border-radius:999px;border:1px solid #e3e6ec;background:var(--mk-panel);color:var(--mk-strong);font-family:var(--mk-font);font-size:13.5px;font-weight:700;letter-spacing:.02em;text-decoration:none;cursor:pointer;box-shadow:0 1px 2px rgba(16,24,40,.04);transition:transform .18s var(--mk-ease),box-shadow .18s var(--mk-ease),background .18s var(--mk-ease),filter .18s var(--mk-ease)}.mk-btn:hover{transform:translateY(-1px);background:#fafbfd;box-shadow:0 6px 16px -8px rgba(16,24,40,.14)}.mk-btn--primary{border:none;background:var(--mk-grad);color:#fff;box-shadow:0 8px 20px -8px rgba(84,51,255,.45)}.mk-btn--primary:hover{background:var(--mk-grad);filter:brightness(1.04);box-shadow:0 12px 26px -9px rgba(84,51,255,.52)}.mk-btn--disabled,.mk-btn--disabled:hover{background:#eef1f5;border:none;color:var(--mk-muted);cursor:default;transform:none;filter:none;box-shadow:none}.mk-btn-note{font-size:10.5px;font-weight:600;opacity:.8}.mk-divider{display:flex;align-items:center;gap:12px;margin:4px 0;color:var(--mk-muted);font-size:11px}.mk-divider:after,.mk-divider:before{content:"";flex:1 1;height:1px;background:var(--mk-line)}.mk-link{color:var(--mk-brand);font-weight:600;text-decoration:none}.mk-link:hover{color:#2468b6}.mk-note{margin:0;font-size:11px;line-height:1.8;color:var(--mk-muted)}.mk-alert{margin:0;background:rgba(192,59,63,.07);color:var(--mk-warn);font-size:12px}.mk-alert,.mk-band{padding:10px 12px;border-radius:10px;line-height:1.7}.mk-band{display:flex;align-items:flex-start;gap:8px;background:linear-gradient(135deg,rgba(32,189,255,.08),rgba(84,51,255,.08));color:var(--mk-strong);font-size:11.5px}.mk-qr{display:flex;align-items:center;gap:16px;padding:14px 16px;border:1px dashed #d5dce9;border-radius:12px;background:#fafbfd}.mk-qr img{width:84px;height:84px;flex:none}.mk-qr p{margin:0;font-size:11.5px;line-height:1.8;color:var(--mk-sub)}.mk-center{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}.mk-spinner{width:26px;height:26px;border-radius:50%;border:3px solid rgba(43,123,215,.18);border-top:3px solid var(--mk-brand);animation:mk-spin .7s linear infinite}@keyframes mk-spin{to{transform:rotate(1turn)}}