.page-faq {
  --faq-card-top: rgba(16, 37, 28, 0.62);
  --faq-card-bottom: rgba(11, 15, 13, 0.42);
  display: block;
  color: var(--text);
  padding-bottom: clamp(32px, 6vw, 72px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 60px) 0 clamp(30px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(760px 460px at 84% 12%, rgba(182, 255, 59, 0.16), transparent 64%),
    radial-gradient(520px 380px at 8% 88%, rgba(255, 90, 54, 0.12), transparent 70%),
    linear-gradient(158deg, rgba(16, 37, 28, 0.92), rgba(11, 15, 13, 0) 72%);
}

.page-faq .faq-hero-inner {
  position: relative;
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  align-items: end;
}

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

.page-faq .faq-hero-copy .breadcrumb {
  margin-bottom: 14px;
}

.page-faq .faq-hero-copy h1 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(2.15rem, 6.6vw, 4.6rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.045em;
  color: var(--data-line);
  word-break: break-word;
}

.page-faq .faq-hero-copy .lead {
  margin: clamp(14px, 2.4vw, 22px) 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .faq-jump .pill {
  text-decoration: none;
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-jump .pill:hover,
.page-faq .faq-jump .pill:focus-visible {
  transform: translateY(-2px);
}

.page-faq .faq-hero-figure {
  margin: 0;
  align-self: stretch;
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* ---------- 问答分段 ---------- */
.page-faq .qa-section {
  position: relative;
  padding: clamp(32px, 5.5vw, 62px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .qa-section:nth-of-type(2n) {
  background: linear-gradient(180deg, rgba(16, 37, 28, 0.34), rgba(11, 15, 13, 0));
}

.page-faq .qa-section-inner {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-faq .qa-aside {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-faq .qa-aside-num {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5vw, 2.9rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--lime);
}

.page-faq .qa-aside-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.25rem, 2.6vw, 1.55rem);
  font-weight: 900;
  letter-spacing: -0.025em;
  color: var(--data-line);
}

.page-faq .qa-aside-note {
  margin: 0;
  max-width: 30ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

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

/* ---------- 手风琴 ---------- */
.page-faq .qa-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, var(--faq-card-top), var(--faq-card-bottom));
  overflow: hidden;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-faq .qa:hover {
  border-color: var(--line-strong);
}

.page-faq .qa[open] {
  border-color: rgba(182, 255, 59, 0.55);
  background: linear-gradient(180deg, rgba(16, 37, 28, 0.94), rgba(11, 15, 13, 0.66));
}

.page-faq .qa-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  letter-spacing: -0.01em;
}

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

.page-faq .qa-summary::marker {
  content: "";
}

.page-faq .qa-summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -3px;
  border-radius: var(--radius-md);
}

.page-faq .qa-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  transition: color 0.2s var(--ease);
}

.page-faq .qa[open] .qa-num {
  color: var(--lime);
}

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

.page-faq .qa-toggle {
  position: relative;
  flex: none;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  transition: transform 0.26s var(--ease), background 0.26s var(--ease), border-color 0.26s var(--ease);
}

.page-faq .qa-toggle::before,
.page-faq .qa-toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--data-line);
  transform: translate(-50%, -50%);
  transition: opacity 0.2s var(--ease), background 0.26s var(--ease);
}

.page-faq .qa-toggle::before {
  width: 10px;
  height: 2px;
}

.page-faq .qa-toggle::after {
  width: 2px;
  height: 10px;
}

.page-faq .qa[open] .qa-toggle {
  background: var(--lime);
  border-color: var(--lime);
  transform: rotate(180deg);
}

.page-faq .qa[open] .qa-toggle::before,
.page-faq .qa[open] .qa-toggle::after {
  background: var(--ink);
}

.page-faq .qa[open] .qa-toggle::after {
  opacity: 0;
}

.page-faq .qa-body {
  padding: 0 16px 16px 16px;
  border-left: 2px solid rgba(182, 255, 59, 0.45);
  margin-left: 16px;
  padding-left: 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .qa[open] .qa-body {
  animation: faqBodyIn 0.26s var(--ease) both;
}

.page-faq .qa-body p {
  margin: 0;
}

.page-faq .qa-body a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa-body a:hover,
.page-faq .qa-body a:focus-visible {
  color: var(--data-line);
}

.page-faq .qa-body .mono {
  color: var(--amber);
  font-size: 14px;
  word-break: break-all;
}

@keyframes faqBodyIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: clamp(16px, 3vw, 22px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(42, 49, 45, 0.34);
  min-width: 0;
}

.page-faq .faq-step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .faq-step-title {
  display: block;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 800;
  color: var(--data-line);
}

.page-faq .faq-step-text {
  display: block;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-shot {
  margin: clamp(16px, 3vw, 22px) 0 0;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta-wrap {
  padding-top: clamp(34px, 6vw, 68px);
}

.page-faq .faq-cta {
  display: grid;
  gap: 14px;
  padding: clamp(24px, 4.5vw, 52px);
  border: 1px solid rgba(182, 255, 59, 0.32);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(620px 300px at 86% 12%, rgba(255, 90, 54, 0.24), transparent 66%),
    linear-gradient(135deg, rgba(182, 255, 59, 0.13), rgba(16, 37, 28, 0.92));
}

.page-faq .faq-cta h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3.6vw, 2.5rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.035em;
  color: var(--data-line);
}

.page-faq .faq-cta-text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.page-faq .faq-cta-actions .btn {
  text-decoration: none;
}

.page-faq .faq-fine {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--text-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .qa-summary {
    padding: 17px 20px;
  }

  .page-faq .qa-body {
    padding: 0 20px 18px 20px;
    margin-left: 20px;
    padding-left: 16px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.78fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-hero-figure {
    max-height: 560px;
    overflow: hidden;
  }

  .page-faq .qa-section-inner {
    grid-template-columns: minmax(150px, 210px) minmax(0, 1fr);
    gap: clamp(26px, 4.5vw, 60px);
    align-items: start;
  }

  .page-faq .qa-aside {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa[open] .qa-body {
    animation: none;
  }

  .page-faq .qa-toggle,
  .page-faq .faq-jump .pill {
    transition: none;
  }
}