.mvp-layout { display: grid; grid-template-columns: 1fr 380px; gap: 32px; align-items: start; }
@media (max-width: 860px) { .mvp-layout { grid-template-columns: 1fr; } }

.phone {
  width: 100%; max-width: 380px; margin: 0 auto;
  background: var(--surface); border: 1px solid var(--line); border-radius: 32px;
  padding: 14px; box-shadow: var(--shadow);
}
.phone-screen { background: var(--bg); border-radius: 22px; padding: 16px; min-height: 460px; }
.app-bar { display: flex; justify-content: space-between; align-items: center; font-weight: 700; margin-bottom: 14px; }
.app-bar small { color: var(--muted); font-weight: 600; }
.sip-card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 16px; }
.sip-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.sip-head h2 { margin: 0; font-size: 1.05rem; }
.tag { border-radius: 999px; padding: 2px 10px; font-size: 0.8rem; font-weight: 650; background: var(--ok-soft); color: var(--ok); }
.tag::before { content: "● "; }
.sip-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 16px; margin: 16px 0; }
.sip-stats dt { color: var(--muted); font-size: 0.78rem; }
.sip-stats dd { margin: 0; font-weight: 700; font-size: 1.05rem; }
.down { color: var(--warn); }
.sip-card button { width: 100%; }
.outcome { margin-top: 14px; min-height: 1.6em; font-weight: 650; text-align: center; font-size: 0.95rem; }
.demo-note { text-align: center; font-size: 0.78rem; color: var(--muted); margin-top: 10px; }

.how h2 { margin-top: 0; }
.how ol { padding-left: 20px; margin: 8px 0 16px; }
.how li { margin: 6px 0; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.check-list li::before { content: "✔ "; color: var(--ok); font-weight: 700; }

dialog {
  width: min(540px, calc(100vw - 24px)); border: 1px solid var(--line); border-radius: 20px;
  background: var(--surface); color: var(--ink); padding: 24px; box-shadow: var(--shadow);
}
dialog::backdrop { background: rgba(8, 10, 24, 0.6); backdrop-filter: blur(2px); }
dialog h2 { margin-top: 0; font-size: 1.3rem; }
fieldset { border: 0; padding: 0; margin: 0 0 14px; display: grid; gap: 8px; }
.opt {
  display: flex; gap: 10px; align-items: center; padding: 11px 14px; cursor: pointer;
  border: 1px solid var(--line); border-radius: 12px; background: var(--surface-2);
}
.opt:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); }
.opt input { accent-color: var(--primary); width: 18px; height: 18px; }
.reply { background: var(--surface-2); border: 1px solid var(--line); border-radius: 12px; padding: 14px; white-space: pre-wrap; }
.badge { display: inline-block; font-weight: 650; font-size: 0.9rem; padding: 5px 12px; border-radius: 999px; margin: 10px 0; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.info { background: var(--warn-soft); color: var(--warn); }
details { margin: 8px 0; }
summary { cursor: pointer; font-weight: 650; color: var(--primary); }
details ul { margin: 8px 0; padding-left: 20px; }