.page-faq {
  --faq-side: 300px;
  --faq-gap: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(56px, 8vw, 112px);
}

.page-faq .breadcrumb {
  margin: 18px 0 clamp(14px, 2vw, 22px);
}

.page-faq .faq-hero,
.page-faq .faq-layout,
.page-faq .faq-group,
.page-faq .faq-index {
  min-width: 0;
}

/* ---------- 首屏分屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(24px, 5vw, 56px);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
  background:
    radial-gradient(110% 130% at 92% -20%, rgba(255, 90, 47, 0.3), transparent 58%),
    radial-gradient(90% 120% at 0% 118%, rgba(45, 226, 240, 0.2), transparent 62%),
    linear-gradient(158deg, var(--ink-2) 0%, var(--ink) 64%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.75;
  background-image:
    linear-gradient(to right, rgba(140, 244, 255, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 244, 255, 0.07) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(120% 100% at 82% 0%, #000 18%, transparent 78%);
  mask-image: radial-gradient(120% 100% at 82% 0%, #000 18%, transparent 78%);
}

.page-faq .faq-hero-copy,
.page-faq .faq-hero-map {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-copy .eyebrow {
  color: var(--cyan-soft);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(28px, 5.2vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--sub);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------- 首屏右侧路线图 ---------- */
.page-faq .faq-hero-map {
  padding: 18px 18px 16px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-md);
  background: rgba(6, 16, 29, 0.62);
}

.page-faq .faq-map-caption {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan-soft);
}

.page-faq .faq-map-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-faq .faq-map-list li {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 24px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--sub);
}

.page-faq .faq-map-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -4.5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(45, 226, 240, 0.12);
}

.page-faq .faq-map-list li::after {
  content: "";
  position: absolute;
  left: 8px;
  top: calc(50% + 9px);
  width: 1px;
  height: 15px;
  background: linear-gradient(to bottom, rgba(45, 226, 240, 0.55), rgba(45, 226, 240, 0));
}

.page-faq .faq-map-list li:last-child::after {
  display: none;
}

.page-faq .faq-map-list .mono {
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.06em;
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-layout {
  margin-top: clamp(28px, 4vw, 48px);
  display: grid;
  gap: var(--faq-gap);
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index {
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(30, 42, 56, 0.92), rgba(13, 26, 43, 0.92));
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--weak);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  background: rgba(6, 16, 29, 0.6);
  color: var(--sub);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  scroll-snap-align: start;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-index-link .mono {
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-faq .faq-index-link:hover {
  color: var(--text);
  border-color: var(--cyan);
  background: rgba(45, 226, 240, 0.1);
}

.page-faq .faq-index-link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  color: var(--text);
}

.page-faq .faq-index-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--weak);
}

/* ---------- 问题组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 92px;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: linear-gradient(165deg, rgba(21, 28, 38, 0.95), rgba(6, 16, 29, 0.95));
  box-shadow: var(--shadow-1);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-faq .faq-group--accent {
  border-color: var(--line-cyan);
  background:
    radial-gradient(120% 120% at 100% 0%, rgba(45, 226, 240, 0.13), transparent 58%),
    linear-gradient(165deg, rgba(21, 28, 38, 0.96), rgba(6, 16, 29, 0.96));
}

.page-faq .faq-group-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.page-faq .faq-group-num {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(232, 200, 122, 0.45);
  border-radius: var(--r-pill);
  background: rgba(232, 200, 122, 0.1);
  color: var(--gold);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 27px);
  line-height: 1.34;
  color: var(--text);
}

.page-faq .faq-group-desc {
  margin: 9px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--sub);
}

/* ---------- 步骤胶囊 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(16px, 2.2vw, 20px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-steps li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-pill);
  background: rgba(45, 226, 240, 0.07);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-faq .faq-steps .mono {
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.06em;
}

/* ---------- 手风琴 ---------- */
.page-faq .qa-list {
  list-style: none;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 0;
}

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

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

.page-faq .qa-q {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 16px 46px 16px 0;
  font-family: var(--font-sans);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  transition: color 0.18s var(--ease);
}

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

.page-faq .qa-q::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line-cyan);
  border-radius: 50%;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
}

.page-faq .qa-q:hover {
  color: var(--cyan-soft);
}

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
  border-radius: 8px;
}

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

.page-faq .qa[open] .qa-q::after {
  content: "−";
  color: var(--gold);
  border-color: rgba(232, 200, 122, 0.5);
}

.page-faq .qa-a {
  padding: 0 8px 18px 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sub);
}

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

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

.page-faq .qa-a a:hover,
.page-faq .qa-a a:focus-visible {
  color: var(--cyan-soft);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
  background: linear-gradient(150deg, var(--slate), var(--ink-2));
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.65;
  color: var(--weak);
}

/* ---------- 结尾引导 ---------- */
.page-faq .faq-outro {
  margin: clamp(18px, 2.4vw, 24px) 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-soft);
  font-size: 14px;
  line-height: 1.8;
  color: var(--sub);
}

.page-faq .faq-outro a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-map {
    padding: 22px 22px 20px;
  }

  .page-faq .faq-map-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 18px;
  }

  .page-faq .faq-map-list li::after {
    display: none;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-faq .faq-map-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 13px;
  }

  .page-faq .faq-map-list li::after {
    display: block;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, var(--faq-side)) minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 3.4vw, 52px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 28px;
    padding: 22px;
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    overflow: visible;
    gap: 6px;
    padding: 0;
  }

  .page-faq .faq-index-link {
    width: 100%;
    padding: 12px 14px;
    border-color: transparent;
    border-radius: var(--r-sm);
    background: transparent;
    white-space: normal;
  }

  .page-faq .faq-index-link:hover {
    border-color: var(--line-cyan);
    background: rgba(45, 226, 240, 0.08);
  }

  .page-faq .faq-figure {
    max-width: 100%;
  }
}

@media (min-width: 1240px) {
  .page-faq {
    --faq-side: 320px;
  }

  .page-faq .faq-group {
    padding: clamp(26px, 2.6vw, 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-q,
  .page-faq .faq-index-link {
    transition: none;
  }
}