.page-faq {
  --faq-text: #c3d0e0;
  --faq-rail-w: 232px;
  --faq-card: var(--ink-module);
  background: var(--ink-space);
  color: var(--ice);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--line-blue);
  background:
    radial-gradient(120% 90% at 84% 4%, rgba(255, 90, 42, 0.16), transparent 58%),
    linear-gradient(180deg, var(--ink-void), var(--ink-space) 72%);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  align-items: end;
}

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .faq-hero-copy .kicker {
  display: block;
  margin-top: clamp(16px, 2.4vw, 26px);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--ice);
  text-wrap: balance;
}

.page-faq .faq-lead {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--faq-text);
}

.page-faq .faq-hero-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-blue);
  border: 1px solid var(--line-blue);
}

.page-faq .faq-fact {
  background: var(--ink-void);
  padding: 12px 14px;
}

.page-faq .faq-fact-num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1;
  color: var(--flame);
  letter-spacing: 0.02em;
}

.page-faq .faq-fact-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--mist);
}

.page-faq .faq-hero-media {
  margin: 0;
  border: 1px solid var(--line-blue);
  background: var(--ink-void);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  filter: saturate(0.92) brightness(0.92);
}

.page-faq .faq-hero-media .media-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-blue);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 四步条 ---------- */
.page-faq .faq-steps-band {
  padding: clamp(28px, 4vw, 52px) 0;
  background: var(--ink-void);
  border-bottom: 1px solid var(--line-blue);
}

.page-faq .faq-steps-head {
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-steps-head .kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-faq .faq-steps-title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.2;
  color: var(--ice);
}

.page-faq .faq-steps-sub {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-text);
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-blue);
  border: 1px solid var(--line-blue);
}

.page-faq .faq-step {
  background: var(--faq-card);
  padding: 16px 16px 20px;
  transition: background 0.22s ease;
}

.page-faq .faq-step:hover {
  background: #16223a;
}

.page-faq .faq-step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--flame);
  border-bottom: 1px solid var(--line-blue);
  padding-bottom: 6px;
}

.page-faq .faq-step-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.35;
  color: var(--ice);
}

.page-faq .faq-step-text {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--faq-text);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: clamp(32px, 5vw, 68px) 0;
}

.page-faq .faq-rail-layout {
  display: block;
  min-width: 0;
}

.page-faq .faq-index {
  margin-bottom: clamp(24px, 4vw, 0px);
  min-width: 0;
}

.page-faq .faq-index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line-blue);
  border-radius: var(--radius);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--ice);
  border-color: var(--flame);
  background: rgba(255, 90, 42, 0.1);
}

.page-faq .faq-qa {
  min-width: 0;
}

/* ---------- 章节与手风琴 ---------- */
.page-faq .faq-chapter + .faq-chapter {
  margin-top: clamp(32px, 4.5vw, 58px);
}

.page-faq .faq-chapter-head {
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--flame);
}

.page-faq .faq-chapter-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-chapter-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.25;
  color: var(--ice);
}

.page-faq .faq-chapter-sub {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .qa-item {
  border-bottom: 1px solid var(--line-blue);
}

.page-faq .qa-question {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 4px 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.55;
  color: var(--ice);
  transition: color 0.2s ease;
}

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

.page-faq .qa-question:hover {
  color: var(--flame-bright);
}

.page-faq .qa-question:focus-visible {
  outline: 2px solid var(--flame-bright);
  outline-offset: 3px;
}

.page-faq .qa-sign {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-blue);
  color: var(--flame);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .qa-sign::before {
  content: "+";
}

.page-faq .qa-item[open] .qa-sign {
  background: var(--flame);
  border-color: var(--flame);
  color: var(--ink-void);
}

.page-faq .qa-item[open] .qa-sign::before {
  content: "−";
}

.page-faq .qa-text {
  min-width: 0;
}

.page-faq .qa-answer {
  padding: 0 0 20px;
}

.page-faq .qa-answer p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--faq-text);
}

.page-faq .qa-answer p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-steps {
  display: grid;
  gap: 10px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .qa-steps li {
  position: relative;
  padding-left: 34px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-text);
}

.page-faq .qa-steps .qs-num {
  position: absolute;
  left: 0;
  top: 1px;
  padding: 1px 4px;
  border: 1px solid var(--line-blue);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  color: var(--amber);
}

.page-faq .qa-note {
  border-left: 2px solid var(--pitch);
  background: rgba(47, 191, 113, 0.08);
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--faq-text);
}

.page-faq .faq-figure {
  margin: 16px 0 0;
  border: 1px solid var(--line-blue);
  background: var(--ink-void);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  filter: saturate(0.9) brightness(0.9);
}

.page-faq .faq-figure .media-caption {
  padding: 9px 12px;
  border-top: 1px solid var(--line-blue);
  font-size: 12px;
  color: var(--mist);
}

/* ---------- 准备清单 ---------- */
.page-faq .faq-prepare {
  padding: clamp(32px, 5vw, 64px) 0;
  background: var(--ink-void);
  border-top: 1px solid var(--line-blue);
  border-bottom: 1px solid var(--line-blue);
}

.page-faq .faq-prepare-head {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-faq .faq-prepare-head .kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-faq .faq-prepare-title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.22;
  color: var(--ice);
}

.page-faq .faq-prepare-sub {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-text);
}

.page-faq .prepare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .prepare-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--line-blue);
  border-radius: var(--radius);
  background: var(--faq-card);
  font-size: 14px;
  line-height: 1.65;
  color: var(--faq-text);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .prepare-item:hover {
  border-color: #34507a;
}

.page-faq .prepare-item input {
  flex: none;
  width: 16px;
  height: 16px;
  margin: 3px 0 0;
  accent-color: var(--flame);
}

.page-faq .prepare-item label {
  cursor: pointer;
}

.page-faq .prepare-item:has(input:checked) {
  border-color: var(--flame);
  background: rgba(255, 90, 42, 0.09);
  color: var(--ice);
}

.page-faq .prepare-item:has(input:focus-visible) {
  outline: 2px solid var(--flame-bright);
  outline-offset: 2px;
}

/* ---------- 结尾 ---------- */
.page-faq .faq-cta {
  padding: clamp(32px, 5vw, 64px) 0 clamp(40px, 6vw, 84px);
}

.page-faq .faq-cta-panel {
  display: grid;
  gap: 20px;
  padding: clamp(20px, 3.4vw, 40px);
  border: 1px solid var(--line-blue);
  background: linear-gradient(135deg, rgba(255, 90, 42, 0.15), var(--ink-module) 58%);
}

.page-faq .faq-cta-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.2;
  color: var(--ice);
}

.page-faq .faq-cta-text {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--faq-text);
}

.page-faq .faq-cta-meta {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-faq .faq-cta-actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  text-decoration: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-step {
    padding: 18px 18px 22px;
  }

  .page-faq .prepare-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(24px, 4vw, 56px);
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-cta-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-faq .faq-cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-rail-layout {
    display: grid;
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 72px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    margin-bottom: 0;
  }

  .page-faq .faq-index-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index-list li + li {
    margin-top: 2px;
  }

  .page-faq .faq-index-link {
    display: flex;
    width: 100%;
    padding: 10px 0 10px 14px;
    border: 0;
    border-left: 1px solid var(--line-blue);
    border-radius: 0;
    white-space: normal;
    background: none;
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    border-left-color: var(--flame);
    border-left-width: 2px;
    padding-left: 13px;
    background: rgba(255, 90, 42, 0.08);
  }

  .page-faq .qa-question {
    padding: 18px 6px 18px 0;
  }

  .page-faq .qa-answer {
    padding-left: 34px;
  }

  .page-faq .faq-figure {
    max-width: 640px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero h1 {
    max-width: 16ch;
  }
}
<<<END>>>