:root{
  --demo-bg:#f8fafc;
  --demo-panel:#ffffff;
  --demo-text:#0f172a;
  --demo-muted:#64748b;
  --demo-border:#dbe3ef;
  --demo-accent:#2563eb;
  --demo-hover:#eef4ff;
}
*{box-sizing:border-box;}
html,body{height:100%;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,'Noto Sans JP',Meiryo,sans-serif;background:var(--demo-bg);color:var(--demo-text);}
.demo-page{min-height:100%;display:flex;flex-direction:column;}
.demo-header{padding:18px 24px 14px;border-bottom:1px solid var(--demo-border);background:var(--demo-panel);}
.demo-header__title{display:flex;align-items:center;gap:12px;margin:0 0 4px;font-size:28px;line-height:1.2;}
.demo-logo{width:34px;height:34px;border:1px solid var(--demo-border);border-radius:10px;display:inline-flex;align-items:center;justify-content:center;background:#fff;color:var(--demo-accent);font-weight:700;}
.demo-subtitle{margin:0;color:var(--demo-muted);font-size:13px;}
.demo-content{padding:20px 24px;}
.demo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;max-width:1180px;}
.demo-card{display:block;text-decoration:none;color:inherit;background:var(--demo-panel);border:1px solid var(--demo-border);border-radius:14px;padding:16px;box-shadow:0 8px 22px rgba(15,23,42,.05);}
.demo-card:hover{border-color:#b7cdfb;background:var(--demo-hover);}
.demo-card__title{font-weight:700;font-size:17px;margin:0 0 6px;display:flex;gap:8px;align-items:center;}
.demo-card__desc{margin:0;color:var(--demo-muted);font-size:13px;line-height:1.55;}
.demo-note{margin-top:18px;max-width:980px;color:var(--demo-muted);font-size:13px;line-height:1.6;}
.demo-shell{height:100vh;display:flex;flex-direction:column;min-height:0;}
.demo-shell.is-maximized .demo-config{display:none;}
.demo-shell.is-maximized .demo-header{display:none;}
.demo-config{padding:10px 12px;border-bottom:1px solid var(--demo-border);background:var(--demo-panel);display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap;}
.demo-field{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--demo-muted);}
.demo-field input,.demo-field select{height:30px;border:1px solid var(--demo-border);border-radius:8px;background:#fff;color:var(--demo-text);padding:0 8px;min-width:120px;}
.demo-check{display:flex;align-items:center;gap:6px;height:30px;font-size:13px;color:var(--demo-text);}
.demo-btn{height:30px;border:1px solid var(--demo-border);background:#fff;color:var(--demo-text);border-radius:8px;padding:0 10px;cursor:pointer;}
.demo-btn:hover{background:var(--demo-hover);border-color:#b7cdfb;}
.demo-frame-wrap{flex:1;min-height:0;padding:10px;background:var(--demo-bg);display:flex;flex-direction:column;}
.demo-frame-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;color:var(--demo-muted);font-size:12px;}
.demo-control-frame{flex:1;min-height:0;border:1px solid var(--demo-border);border-radius:12px;background:#fff;overflow:hidden;position:relative;}
.demo-control-frame iframe{width:100%;height:100%;border:0;display:block;background:#fff;}
.demo-log{height:120px;overflow:auto;border-top:1px solid var(--demo-border);background:#0f172a;color:#e5e7eb;font-family:Consolas,monospace;font-size:12px;padding:8px;white-space:pre-wrap;}
.demo-shell.is-maximized .demo-log{display:none;}
.demo-badge{display:inline-flex;align-items:center;border:1px solid var(--demo-border);border-radius:999px;padding:3px 8px;background:#fff;color:var(--demo-muted);font-size:12px;}

/* Demo portal -------------------------------------------------------------
 * The portal is a Demo-only navigation surface. It explains purpose,
 * expected checks and callback responsibility before a reviewer opens each
 * individual Demo. Nothing in this block is required by the runtime Control.
 */
.demo-portal__header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;}
.demo-header__meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end;max-width:520px;}
.demo-portal__body{flex:1;min-height:0;display:grid;grid-template-columns:320px minmax(0,1fr);gap:18px;padding:18px 22px;}
.demo-portal__list{background:var(--demo-panel);border:1px solid var(--demo-border);border-radius:16px;padding:14px;box-shadow:0 8px 22px rgba(15,23,42,.05);align-self:start;}
.demo-section-title{margin:0 0 12px;font-size:14px;color:var(--demo-muted);text-transform:uppercase;letter-spacing:.06em;}
.demo-nav-item{width:100%;border:1px solid transparent;background:transparent;border-radius:12px;padding:10px 12px;margin:4px 0;display:flex;gap:10px;align-items:center;text-align:left;cursor:pointer;color:var(--demo-text);}
.demo-nav-item:hover{background:var(--demo-hover);border-color:#d4e2ff;}
.demo-nav-item.is-active{background:#eef4ff;border-color:#b7cdfb;box-shadow:inset 3px 0 0 var(--demo-accent);}
.demo-nav-item__icon{width:28px;height:28px;border:1px solid var(--demo-border);border-radius:8px;display:inline-flex;align-items:center;justify-content:center;background:#fff;flex:0 0 auto;}
.demo-nav-item strong{display:block;font-size:14px;line-height:1.25;}
.demo-nav-item small{display:block;color:var(--demo-muted);font-size:12px;margin-top:2px;}
.demo-portal__detail{min-width:0;display:flex;flex-direction:column;gap:14px;}
.demo-detail-card,.demo-policy-note{background:var(--demo-panel);border:1px solid var(--demo-border);border-radius:16px;padding:18px;box-shadow:0 8px 22px rgba(15,23,42,.05);}
.demo-detail-card__head{display:flex;gap:14px;align-items:center;border-bottom:1px solid var(--demo-border);padding-bottom:14px;margin-bottom:14px;}
.demo-detail-card__icon{width:42px;height:42px;border:1px solid #b7cdfb;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;background:#eef4ff;color:var(--demo-accent);font-size:20px;}
.demo-detail-card h2{margin:0 0 3px;font-size:24px;}
.demo-detail-card p{margin:0;color:var(--demo-muted);line-height:1.65;}
.demo-detail-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.demo-detail-grid h3,.demo-policy-note h3{font-size:13px;color:var(--demo-muted);text-transform:uppercase;letter-spacing:.05em;margin:0 0 8px;}
.demo-detail-grid ul,.demo-policy-note ul{margin:0;padding-left:18px;color:var(--demo-text);line-height:1.65;}
.demo-code-like{white-space:pre-line;font-family:Consolas,Menlo,monospace;background:#f8fafc;border:1px solid var(--demo-border);border-radius:10px;padding:10px;color:#334155!important;}
.demo-detail-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:18px;padding-top:14px;border-top:1px solid var(--demo-border);}
.demo-primary-link,.demo-secondary-link{display:inline-flex;align-items:center;justify-content:center;height:34px;border-radius:9px;text-decoration:none;padding:0 12px;font-weight:600;}
.demo-primary-link{background:var(--demo-accent);color:#fff;}
.demo-secondary-link{border:1px solid var(--demo-border);background:#fff;color:var(--demo-text);}
.demo-primary-link:hover{filter:brightness(.96);}
.demo-secondary-link:hover{background:var(--demo-hover);border-color:#b7cdfb;}
.demo-policy-note code{background:#f1f5f9;border:1px solid #e2e8f0;border-radius:5px;padding:1px 4px;}
@media (max-width:900px){
  .demo-portal__header{display:block;}
  .demo-header__meta{justify-content:flex-start;margin-top:10px;}
  .demo-portal__body{grid-template-columns:1fr;padding:14px;}
  .demo-detail-grid{grid-template-columns:1fr;}
}

/* alpha19: demo assets are isolated under demo/assets/ per v1.6 policy. */

.demo-layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:16px;min-height:0;}
.demo-side{background:var(--demo-panel);border:1px solid var(--demo-border);border-radius:14px;padding:14px;align-self:start;}
.demo-main{min-width:0;}
.demo-kv{display:grid;grid-template-columns:160px minmax(0,1fr);gap:6px 10px;font-size:13px;line-height:1.5;}
.demo-kv dt{color:var(--demo-muted);}
.demo-kv dd{margin:0;}
.demo-code-block{background:#0f172a;color:#e2e8f0;border-radius:12px;padding:12px;overflow:auto;font-family:Consolas,monospace;font-size:12px;line-height:1.5;}
.demo-table{width:100%;border-collapse:collapse;font-size:13px;background:#fff;border:1px solid var(--demo-border);border-radius:12px;overflow:hidden;}
.demo-table th,.demo-table td{border-bottom:1px solid var(--demo-border);padding:8px;text-align:left;vertical-align:top;}
.demo-table th{background:#f8fafc;color:var(--demo-muted);font-weight:700;}
.demo-test-row-pass{color:#15803d;font-weight:700;}.demo-test-row-fail{color:#b91c1c;font-weight:700;}
@media (max-width:900px){.demo-layout{grid-template-columns:1fr;}.demo-kv{grid-template-columns:1fr;}}

/* alpha20: true parameter-demo frame maximization.
 * The maximized state is intentionally implemented only in demo/assets so that
 * runtime Control layout and public API are not polluted by Demo-only chrome.
 */
body.demo-frame-maximized{overflow:hidden;}
.demo-shell.is-maximized .demo-frame-wrap{
  position:fixed;
  inset:0;
  z-index:99999;
  padding:0;
  background:#ffffff;
}
.demo-shell.is-maximized .demo-frame-head{
  height:42px;
  margin:0;
  padding:0 12px;
  border-bottom:1px solid var(--demo-border);
  background:#f8fafc;
  flex:0 0 auto;
}
.demo-frame-head__right{display:inline-flex;align-items:center;gap:10px;}
.demo-btn--restore{height:28px;}
.demo-shell.is-maximized .demo-btn--restore{display:inline-flex;}
.demo-shell.is-maximized .demo-control-frame{
  border:0;
  border-radius:0;
  height:calc(100vh - 42px);
  flex:0 0 calc(100vh - 42px);
}
.demo-shell.is-maximized .demo-control-frame iframe{height:100%;}