:root{--ink: #1a1a1a;--muted: #5c6470;--line: #e2e5ea;--paper: #ffffff;--bg: #f4f5f7;--accent: #0b6b52;--accent-weak: #e6f2ee;--warn: #8a5a00;--warn-weak: #fbf0d9;--danger: #9a1c1c;--danger-weak: #fbe6e6;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.5}.app{max-width:960px;margin:0 auto;padding:24px 20px 64px}.app.loading,.app.notfound,.app.error{text-align:center;padding-top:80px;color:var(--muted)}.app-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.brand{font-weight:700;letter-spacing:.02em;font-size:20px}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:20px}.tab{appearance:none;border:none;background:transparent;padding:10px 16px;font-size:15px;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}.tab.active{color:var(--ink);border-bottom-color:var(--accent);font-weight:600}.certificate{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:28px}.sandbox-banner{background:var(--warn-weak);color:var(--warn);border:1px solid #eecf94;border-radius:8px;padding:10px 14px;font-weight:600;margin-bottom:20px}.issuer-statement{color:var(--ink);font-size:15px;margin:0 0 20px}.placeholder-tag{display:inline-block;background:#eef0f3;color:var(--muted);border:1px dashed #c4c9d2;border-radius:4px;padding:0 6px;font-size:12px;font-family:var(--mono)}.cert-meta{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:20px;flex-wrap:wrap}.cert-id{font-family:var(--mono);font-size:15px;word-break:break-all}.cert-badges{display:flex;gap:8px;flex-wrap:wrap}.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;border:1px solid transparent}.badge-complete{background:var(--accent-weak);color:var(--accent);border-color:#bfe0d5}.badge-partial{background:var(--warn-weak);color:var(--warn);border-color:#eecf94}.badge-absent,.badge-unknown{background:var(--danger-weak);color:var(--danger);border-color:#edc3c3}.badge-verified{background:#e9eef9;color:#22468f;border-color:#c3d2ef}.grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}@media(max-width:640px){.grid{grid-template-columns:1fr}}.panel h2{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 10px}.field{margin-bottom:8px}.field-label{font-size:12px;color:var(--muted)}.field-value{font-size:15px}.mono{font-family:var(--mono);font-size:13px}.breakable{word-break:break-all}.binding{margin-top:12px;padding:12px;background:var(--accent-weak);border-radius:8px}.binding-absent{color:var(--muted);font-size:14px}.integrity{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}.replay{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:16px}.replay-status{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:40px;text-align:center;color:var(--muted)}.replay-status-error{color:var(--danger)}.player-surface{background:#fff;border:1px solid var(--line);border-radius:8px;min-height:320px;overflow:auto;position:relative}.player-controls{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}.btn{appearance:none;border:1px solid var(--line);background:#fff;border-radius:6px;padding:6px 12px;font-size:14px;cursor:pointer;color:var(--ink)}.btn:disabled{opacity:.5;cursor:default}.btn-share{font-weight:600}.control{min-width:40px}.control-skip.active{background:var(--accent-weak);border-color:#bfe0d5;color:var(--accent)}.timeline{flex:1;min-width:180px;padding:10px 0;cursor:pointer}.timeline-track{position:relative;height:8px;background:#e9ecf1;border-radius:999px}.timeline-fill{position:absolute;left:0;top:0;height:100%;background:var(--accent);border-radius:999px}.timeline-mark{position:absolute;top:-3px;width:2px;height:14px;background:#9aa3b0;transform:translate(-1px)}.timeline-mark-end{background:var(--danger);width:3px}.timeline-playhead{position:absolute;top:-4px;width:12px;height:16px;margin-left:-6px;background:var(--accent);border:2px solid #fff;border-radius:3px;box-shadow:0 0 0 1px var(--accent)}.elapsed{font-family:var(--mono);font-size:13px;color:var(--muted);min-width:90px;text-align:right}