.ss4-body {
  margin: 0;
  color: #2c241f;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}
.ss4-main {
  width: min(720px, 100%);
  margin-left: auto;
  margin-right: auto;
  padding-left: 14px;
  padding-right: 14px;
}
.ss4-panel {
  background: #fffaf6;
  border: 1px solid #e6d8cf;
  border-radius: 16px;
  padding: 22px 18px 20px;
  box-shadow: 0 12px 32px rgba(73, 51, 45, .18);
  color: #2c241f;
}
.hidden { display: none !important; }
.ss4-kicker { margin: 0 0 10px; letter-spacing: .06em; color: #6e3a36; font-size: .82rem; font-weight: 700; }
.ss4-accent { display: block; margin-top: 6px; color: #6e3a36; font-size: 1.05rem; font-weight: 700; }
.ss4-panel h1,
.ss4-panel h2,
.ss4-q {
  margin: 0 0 10px;
  color: #1f1814;
  font-size: 1.7rem;
  line-height: 1.25;
}
.ss4-q { font-size: 1.25rem; line-height: 1.45; }
.ss4-lead, .ss4-note, .ss4-sub { color: #4a403b; line-height: 1.55; }
.ss4-note { padding: 10px 12px; background: #f7eee8; border-radius: 10px; }
.ss4-gate { display: grid; gap: 10px; margin: 16px 0; }
.ss4-check { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border: 1px solid #e6d8cf; border-radius: 10px; cursor: pointer; }
.ss4-check input { margin-top: 4px; }
.ss4-check strong { display: block; }
.ss4-check small { display: block; color: #7a6b64; }
.ss4-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.ss4-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 42px; padding: 0 16px; border-radius: 10px; border: 1px solid #c9b6ac;
  background: #fff; color: #2c241f; text-decoration: none; cursor: pointer; font: inherit;
}
.ss4-btn.primary { background: #8c4d48; border-color: #8c4d48; color: #fff; }
.ss4-btn.ghost { background: transparent; color: #2c241f; }
.ss4-btn:hover, .ss4-btn:focus-visible { filter: brightness(1.06); outline: none; }
.ss4-btn:active { transform: translateY(1px); }
.ss4-btn:disabled { opacity: .55; cursor: not-allowed; filter: none; transform: none; }
.ss4-status { min-height: 1.2em; color: #8c4d48; }
.ss4-progress { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.ss4-progress span { font-variant-numeric: tabular-nums; font-weight: 700; min-width: 4.5rem; }
.ss4-progress i { flex: 1; height: 8px; border-radius: 99px; background: #eadfd8; position: relative; overflow: hidden; }
.ss4-progress i::after { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--progress, 0%); background: #8c4d48; }
.ss4-milestone { margin: 0 0 12px; padding: 8px 10px; background: #f3ece6; border-radius: 8px; color: #4a403b; }
.ss4-q-note { margin: 0 0 12px; padding: 8px 10px; border-left: 3px solid #8c4d48; color: #4a403b; background: #fbf3ee; }
.ss4-scale { display: grid; gap: 8px; }
.ss4-opt {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  width: 100%; text-align: left; padding: 12px 14px; border-radius: 12px;
  border: 1px solid #e2d4cb; background: #fff; color: #1f1814; cursor: pointer; font: inherit;
  transition: border-color .15s ease, background .15s ease, transform .12s ease, box-shadow .15s ease;
}
.ss4-opt small { color: #7a6b64; }
.ss4-opt:hover, .ss4-opt:focus-visible {
  border-color: #8c4d48;
  background: #fbf3ef;
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(73, 51, 45, .12);
  outline: none;
}
.ss4-opt:active { transform: translateY(0); background: #f3e4de; }
.ss4-opt.selected, .ss4-opt[aria-pressed="true"] {
  border-color: #8c4d48;
  background: #f8ece8;
  box-shadow: inset 0 0 0 1px #8c4d48;
  animation: ss4-opt-pulse .35s ease-out;
}
@keyframes ss4-opt-pulse {
  0% { box-shadow: inset 0 0 0 2px #8c4d48, 0 0 0 0 rgba(140, 77, 72, .35); }
  100% { box-shadow: inset 0 0 0 1px #8c4d48, 0 0 0 8px rgba(140, 77, 72, 0); }
}
.ss4-quiz-nav { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; }
.ss4-hint { color: #7a6b64; font-size: .9rem; }
.ss4-bars { display: grid; gap: 10px; margin: 18px 0; }
.ss4-bar { display: grid; grid-template-columns: 92px 1fr 48px; gap: 8px; align-items: center; }
.ss4-bar b { font-size: .92rem; }
.ss4-bar i { height: 10px; border-radius: 99px; background: #eadfd8; overflow: hidden; }
.ss4-bar i em { display: block; height: 100%; width: var(--p, 0%); background: var(--c, #8c4d48); }
.ss4-blocks { display: grid; gap: 12px; }
.ss4-block { padding: 12px 14px; border: 1px solid #eadfd8; border-radius: 12px; background: #fff; }
.ss4-block h3 { margin: 0 0 6px; font-size: 1rem; color: #8c4d48; }
.ss4-block ul { margin: 0; padding-left: 1.1em; }
.ss4-card { margin: 18px 0; padding: 14px; border-radius: 12px; background: #2c241f; color: #f7eee8; }
.ss4-card h2 { margin: 0 0 8px; font-size: 1rem; }
.ss4-card pre { white-space: pre-wrap; font-family: inherit; line-height: 1.5; margin: 0 0 12px; }
.ss4-cta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.ss4-cta a { color: #8c4d48; }
.ss4-footer-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; padding-top: 12px; border-top: 1px solid #eadfd8; }
.ss4-footer-links a { color: #5c514b; }
.ss4-share-preview { margin-top: 12px; }
.ss4-share-preview canvas { display: block; width: 100%; max-width: 420px; height: auto; margin: 0 auto 10px; border-radius: 12px; background: #fff; }
.ss4-share-canvas { position: absolute; left: -9999px; }
.ss4-check,
.ss4-check strong,
.ss4-bar,
.ss4-block,
.ss4-block p,
.ss4-block li,
.ss4-hint {
  color: #2c241f;
}
.ss4-card,
.ss4-card h2,
.ss4-card pre,
.ss4-card .ss4-status {
  color: #f7eee8;
}
.ss4-card .ss4-actions { margin-top: 4px; }
.ss4-card .ss4-btn.ghost {
  border-color: rgba(247, 238, 232, .5);
  color: #f7eee8;
  background: transparent;
}
.ss4-card .ss4-btn.ghost:hover,
.ss4-card .ss4-btn.ghost:focus-visible {
  background: rgba(255, 255, 255, .1);
  border-color: #f7eee8;
  filter: none;
}
@media (max-width: 520px) {
  .ss4-bar { grid-template-columns: 1fr auto; }
  .ss4-bar i { grid-column: 1 / -1; }
}