.deep-guide {
  padding: 76px 0;
}

.deep-guide + .deep-guide {
  padding-top: 8px;
}

.deep-guide .section-heading {
  margin-bottom: 30px;
}

.scenario-banner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 26px;
  align-items: center;
  margin-top: 28px;
  padding: 28px;
  border: 1px solid rgba(56,214,164,.26);
  border-radius: 18px;
  background: linear-gradient(135deg,rgba(56,214,164,.09),rgba(88,166,255,.07));
}

.scenario-banner p,
.choice-card p,
.step-card p,
.guide-note p,
.calculation p,
.setting-intro,
.deep-guide td,
.deep-guide li {
  color: var(--muted);
}

.scenario-banner strong {
  display: block;
  margin-bottom: 5px;
  font-size: 1.14rem;
}

.scenario-badge {
  padding: 9px 12px;
  border: 1px solid rgba(56,214,164,.34);
  border-radius: 999px;
  color: var(--accent);
  background: rgba(56,214,164,.08);
  font-size: .78rem;
  font-weight: 850;
  white-space: nowrap;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 18px;
}

.choice-card,
.step-card,
.guide-note,
.calculation,
.check-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg,rgba(17,34,49,.96),rgba(10,22,32,.96));
}

.choice-card,
.step-card,
.guide-note,
.calculation {
  padding: 25px;
}

.choice-card .label,
.step-card .label {
  display: inline-block;
  margin-bottom: 15px;
  color: var(--accent);
  font: 800 .75rem ui-monospace,SFMono-Regular,Menlo,monospace;
  letter-spacing: .09em;
}

.choice-card ul,
.step-card ul,
.check-card ul {
  margin: 14px 0 0;
  padding-left: 20px;
}

.choice-card li,
.step-card li,
.check-card li {
  margin: 7px 0;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 18px;
  counter-reset: setup-step;
}

.step-card {
  position: relative;
  padding-left: 82px;
  counter-increment: setup-step;
}

.step-card::before {
  content: counter(setup-step,decimal-leading-zero);
  position: absolute;
  top: 25px;
  left: 24px;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  color: var(--accent);
  background: var(--accent-dark);
  font: 850 .78rem ui-monospace,SFMono-Regular,Menlo,monospace;
}

.step-card h3,
.choice-card h3,
.calculation h3,
.guide-note h3 {
  font-size: 1.18rem;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 26px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(9,21,31,.76);
}

.settings-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.settings-table th,
.settings-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.settings-table th {
  color: var(--text);
  background: rgba(255,255,255,.035);
  font-size: .82rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.settings-table td:first-child {
  width: 22%;
  color: var(--text);
  font-weight: 780;
}

.settings-table td:nth-child(2) {
  width: 27%;
  color: #c7f7e8;
  font-weight: 720;
}

.settings-table tr:last-child td {
  border-bottom: 0;
}

.guide-note {
  margin-top: 22px;
  border-color: rgba(88,166,255,.25);
}

.guide-note strong,
.calculation strong {
  color: var(--text);
}

.calculation-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 20px;
  margin-top: 26px;
}

.calculation {
  border-color: rgba(56,214,164,.23);
}

.formula {
  display: block;
  margin: 16px 0;
  padding: 14px 16px;
  border-radius: 10px;
  color: #c7f7e8;
  background: rgba(56,214,164,.08);
  font: 750 .9rem ui-monospace,SFMono-Regular,Menlo,monospace;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 18px;
  margin-top: 26px;
}

.check-card {
  padding: 24px;
}

.check-card h3 {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.deep-guide a:not(.button) {
  color: #bfe8ff;
  text-underline-offset: 3px;
}

.source-note {
  margin-top: 20px;
  color: #8fa5b6;
  font-size: .86rem;
}

@media (max-width: 840px) {
  .step-grid,
  .calculation-grid,
  .check-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .choice-grid,
  .scenario-banner {
    grid-template-columns: 1fr;
  }

  .scenario-badge {
    justify-self: start;
  }

  .step-card {
    padding: 76px 22px 24px;
  }

  .step-card::before {
    top: 22px;
    left: 22px;
  }
}