.page-faq {
  --faq-panel-bg: rgba(18, 58, 99, 0.6);
  --faq-gap: clamp(18px, 3vw, 32px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .faq-hero {
  position: relative;
  margin-top: clamp(14px, 2vw, 24px);
  padding: clamp(28px, 6vw, 64px) clamp(18px, 4vw, 48px) clamp(28px, 5vw, 52px);
  border: 1px solid var(--port-line);
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(58, 125, 124, 0.3), transparent 62%),
    radial-gradient(90% 80% at 100% 100%, rgba(233, 180, 76, 0.14), transparent 66%),
    var(--ink-800);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background: repeating-linear-gradient(90deg, var(--port-line) 0 1px, transparent 1px 16px);
  opacity: 0.75;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 5.2vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0.4em 0 0.55em;
  max-width: 16em;
}

.page-faq .faq-lede {
  max-width: 62ch;
  margin: 0;
  color: var(--text);
  line-height: 1.9;
  font-size: 1rem;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero__meta span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--celadon-mist);
  padding-left: 12px;
  border-left: 1px solid var(--port-line);
}

.page-faq .chapter-head {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2vw, 22px);
  margin-bottom: clamp(18px, 3vw, 30px);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--port-line);
}

.page-faq .chapter-head .chapter-num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1;
  color: var(--celadon);
  opacity: 0.5;
  flex: none;
}

.page-faq .chapter-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.2rem, 2.6vw, 1.75rem);
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 16px;
}

.page-faq .faq-entry {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px 18px;
  border: 1px solid var(--port-line);
  background: var(--ink-700);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-entry::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 14px;
  height: 14px;
  background: var(--ink-800);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.page-faq .faq-entry:hover,
.page-faq .faq-entry:focus-visible {
  transform: translateY(-2px);
  border-color: var(--amber);
  background: var(--ink-700);
}

.page-faq .faq-entry__idx {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--celadon-mist);
}

.page-faq .faq-entry h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-entry p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-entry__go {
  margin-top: auto;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-split {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  grid-template-areas: "main" "aside";
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-split__main { grid-area: main; min-width: 0; }
.page-faq .faq-split__aside { grid-area: aside; min-width: 0; }

.page-faq .faq-split__aside .media-frame {
  margin: 0;
}

.page-faq .faq-tail {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 62ch;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--celadon-mist);
}

.page-faq .faq-tail a {
  color: var(--amber-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(233, 180, 76, 0.5);
}

.page-faq .faq-tail a:hover,
.page-faq .faq-tail a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-faq .step-list {
  list-style: none;
  margin: clamp(16px, 2.5vw, 24px) 0 0;
  padding: 0;
}

.page-faq .step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--port-line);
}

.page-faq .step:last-child {
  border-bottom: 1px solid var(--port-line);
}

.page-faq .step__box {
  position: relative;
  display: block;
  cursor: pointer;
}

.page-faq .step__box input {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.page-faq .step__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--celadon-mist);
  border: 1px solid var(--port-line);
  background: var(--ink-700);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .step__box input:checked + .step__num {
  background: var(--celadon);
  border-color: var(--celadon);
  color: var(--ink-900);
}

.page-faq .step__box input:focus-visible + .step__num {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .step__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .step__body p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .step__body .step__hint {
  margin-top: 6px;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--celadon-mist);
  padding-left: 12px;
  border-left: 1px solid var(--port-line);
}

.page-faq .check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr));
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .check-item {
  padding: 18px 16px;
  border: 1px solid var(--port-line);
  background: var(--faq-panel-bg);
}

.page-faq .check-item__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  margin-bottom: 10px;
  font-size: 0.78rem;
  color: var(--amber);
  border: 1px solid var(--amber);
}

.page-faq .check-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.98rem;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .check-item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-accordion {
  margin-top: clamp(16px, 2.5vw, 22px);
}

.page-faq .qa {
  border-top: 1px solid var(--port-line);
}

.page-faq .qa:last-child {
  border-bottom: 1px solid var(--port-line);
}

.page-faq .qa summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 4px 18px 20px;
  cursor: pointer;
  list-style: none;
}

.page-faq .qa summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: var(--port-line);
  transition: background 0.2s var(--ease);
}

.page-faq .qa[open] summary::before {
  background: var(--amber);
}

.page-faq .qa__q {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

.page-faq .qa[open] .qa__q {
  color: var(--amber-soft);
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 7px;
  border: 1px solid var(--celadon);
}

.page-faq .qa__mark::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 2px;
  bottom: 2px;
  width: 1px;
  background: var(--celadon);
  transform: translateX(-50%);
  transition: opacity 0.2s var(--ease);
}

.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 2px;
  right: 2px;
  height: 1px;
  background: var(--celadon);
  transform: translateY(-50%);
}

.page-faq .qa[open] .qa__mark::before {
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 4px 20px 20px;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 60ch;
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--text);
}

.page-faq .tier-list {
  display: grid;
  margin-top: clamp(16px, 2.5vw, 22px);
}

.page-faq .tier {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid var(--port-line);
}

.page-faq .tier:last-child {
  border-bottom: 1px solid var(--port-line);
}

.page-faq .tier__name {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--celadon-mist);
}

.page-faq .tier p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--text);
}

.page-faq .channel-list {
  display: grid;
  gap: 12px;
  margin-top: clamp(16px, 2.5vw, 22px);
}

.page-faq .channel {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border-left: 3px solid var(--amber);
  background: var(--ink-700);
}

.page-faq .channel__name {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--celadon-mist);
}

.page-faq .channel__value {
  margin: 0;
  max-width: 60ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--paper);
}

.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: clamp(32px, 6vw, 64px);
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--port-line);
  background:
    linear-gradient(120deg, rgba(233, 180, 76, 0.12), transparent 62%),
    var(--ink-700);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 40ch;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--text);
}

@media (min-width: 760px) {
  .page-faq .tier {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-faq .channel-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    grid-template-areas: "main aside";
    align-items: start;
  }

  .page-faq .faq-split--reverse {
    grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
    grid-template-areas: "aside main";
  }

  .page-faq .faq-split__aside {
    position: sticky;
    top: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-entry,
  .page-faq .step__num,
  .page-faq .qa summary::before,
  .page-faq .qa__q,
  .page-faq .qa__mark::before {
    transition: none;
  }

  .page-faq .faq-entry:hover,
  .page-faq .faq-entry:focus-visible {
    transform: none;
  }
}
<<<END>>>