.page-faq {
  --faq-gap: clamp(26px, 5vw, 60px);
  --faq-sec-pad: clamp(46px, 8vw, 96px);
  --faq-edge: 1px solid rgba(110, 90, 30, 0.32);
  --faq-hair: 1px solid var(--slate);
  display: block;
  color: var(--paper);
  background: var(--ink);
  padding-bottom: clamp(40px, 7vw, 90px);
}

.page-faq [id] {
  scroll-margin-top: calc(var(--header-h) + 76px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: calc(var(--header-h) + clamp(30px, 7vw, 84px));
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(201, 162, 39, 0.12), transparent 62%),
    radial-gradient(90% 70% at 4% 6%, rgba(47, 138, 116, 0.14), transparent 66%),
    var(--ink);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-kicker {
  margin: 22px 0 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-faq .faq-title {
  margin: 0 0 18px;
  font-size: clamp(2.4rem, 10.5vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.025em;
  font-weight: 900;
  color: var(--paper);
}

.page-faq .faq-lede {
  margin: 0 0 26px;
  max-width: 60ch;
  font-size: clamp(1rem, 1.6vw, 1.0625rem);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__panel {
  padding: 22px 20px 8px;
  background: var(--ink-2);
  border: var(--faq-edge);
  border-left: 2px solid var(--gold);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-panel__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-panel__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-panel__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 14px;
  padding: 14px 0;
  border-top: var(--faq-hair);
}

.page-faq .faq-panel__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold-lt);
  line-height: 1;
}

.page-faq .faq-panel__txt {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-strip {
  margin-top: var(--faq-gap);
  border-top: var(--faq-edge);
  border-bottom: var(--faq-edge);
  background: rgba(17, 26, 46, 0.6);
}

.page-faq .faq-strip__track {
  display: flex;
  gap: 30px;
  margin: 0;
  padding: 13px max(20px, calc((100vw - 1320px) / 2));
  list-style: none;
  overflow-x: auto;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  scrollbar-width: none;
}

.page-faq .faq-strip__track::-webkit-scrollbar { display: none; }

.page-faq .faq-strip__track li::before {
  content: "◆";
  margin-right: 10px;
  color: var(--jade);
  font-size: 0.6rem;
}

/* ---------- 锚点导航 ---------- */
.page-faq .faq-anchors {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  background: rgba(10, 16, 32, 0.94);
  border-bottom: var(--faq-edge);
  backdrop-filter: blur(6px);
}

.page-faq .faq-anchors__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 9px;
  padding-bottom: 9px;
}

.page-faq .faq-anchors__label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-faq .faq-anchors__list {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-anchors__list::-webkit-scrollbar { display: none; }

.page-faq .faq-anchors__list a {
  display: block;
  padding: 7px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-anchors__list a:hover,
.page-faq .faq-anchors__list a:focus-visible {
  color: var(--gold-lt);
  border-color: rgba(110, 90, 30, 0.55);
  background: rgba(28, 41, 66, 0.7);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-section {
  padding: var(--faq-sec-pad) 0;
  border-bottom: var(--faq-edge);
}

.page-faq .faq-section--alt {
  background: var(--ink-2);
}

.page-faq .faq-sec-head {
  max-width: 68ch;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-faq .faq-sec-head__kicker {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .faq-sec-head__kicker--cinnabar {
  color: var(--cinnabar);
}

.page-faq .faq-sec-head__title {
  margin: 0 0 14px;
  font-size: clamp(1.7rem, 4.6vw, 2.6rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-sec-head__desc {
  margin: 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-sub-title {
  margin: 0 0 14px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

/* ---------- 步骤区 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-steps__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: var(--faq-edge);
}

.page-faq .faq-step:last-child {
  border-bottom: var(--faq-edge);
}

.page-faq .faq-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(201, 162, 39, 0.5);
  border-radius: var(--radius);
  background: rgba(201, 162, 39, 0.08);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--gold-lt);
}

.page-faq .faq-step__title {
  margin: 4px 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-step__body p {
  margin: 0 0 10px;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-step__tagline {
  margin: 0;
}

/* ---------- 图片框 ---------- */
.page-faq .faq-figure {
  margin: 0;
  border: var(--faq-edge);
  border-radius: var(--radius);
  background: var(--ink-2);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.03);
}

.page-faq .faq-figure__cap {
  padding: 12px 16px;
  border-top: var(--faq-edge);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 问答区 ---------- */
.page-faq .faq-terms {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-term-list {
  display: grid;
  gap: 10px;
  align-items: start;
}

.page-faq .faq-item {
  border: var(--faq-edge);
  border-radius: var(--radius);
  background: var(--ink);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.page-faq .faq-section--alt .faq-item {
  background: var(--ink);
}

.page-faq .faq-item[open] {
  border-color: rgba(201, 162, 39, 0.5);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-item[open] summary::after {
  content: "–";
}

.page-faq .faq-item__qnum {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--jade);
}

.page-faq .faq-item__body {
  padding: 14px 16px 18px;
  border-top: 1px solid rgba(28, 41, 66, 0.9);
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-item__body p {
  margin: 0;
}

/* ---------- 归档时间轴 ---------- */
.page-faq .faq-timeline {
  display: grid;
  gap: 6px;
  margin: 0 0 clamp(28px, 4vw, 48px);
  padding: 0;
  list-style: none;
}

.page-faq .faq-node {
  padding: 0 0 18px 18px;
  border-left: 2px solid rgba(201, 162, 39, 0.32);
}

.page-faq .faq-node__year {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gold-lt);
}

.page-faq .faq-node__count {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--jade);
}

.page-faq .faq-node__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-archive-note {
  padding: clamp(20px, 3vw, 30px);
  border: var(--faq-edge);
  border-left: 2px solid var(--jade);
  border-radius: var(--radius);
  background: rgba(47, 138, 116, 0.08);
}

.page-faq .faq-archive-note__title {
  margin: 0 0 14px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-lookup {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-lookup;
}

.page-faq .faq-lookup li {
  padding: 11px 0;
  border-top: 1px solid rgba(28, 41, 66, 0.95);
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-lookup li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-lookup__idx {
  display: inline-block;
  min-width: 2.4em;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--gold);
}

.page-faq .faq-archive-note__link {
  margin: 16px 0 0;
}

/* ---------- 厂商专区 ---------- */
.page-faq .faq-vendors {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-vendors__tip {
  margin: 16px 0 18px;
  padding: 12px 14px;
  border-left: 2px solid var(--gold);
  background: rgba(201, 162, 39, 0.07);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-vendor-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-vcard {
  padding: 16px;
  border: var(--faq-edge);
  border-radius: var(--radius);
  background: var(--ink);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-vcard:hover {
  transform: translateY(-2px);
  border-color: rgba(201, 162, 39, 0.5);
}

.page-faq .faq-vcard__id {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--jade);
}

.page-faq .faq-vcard__name {
  margin: 0 0 6px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-vcard__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 内容边界 ---------- */
.page-faq .faq-boundary {
  padding: clamp(20px, 4vw, 36px);
  border: 1px solid rgba(195, 65, 50, 0.5);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(195, 65, 50, 0.12), rgba(195, 65, 50, 0.03));
}

.page-faq .faq-boundary__title {
  margin: 0 0 16px;
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-boundary__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-boundary__list li {
  position: relative;
  padding: 12px 0 12px 20px;
  border-top: 1px solid rgba(195, 65, 50, 0.24);
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-boundary__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 21px;
  width: 6px;
  height: 6px;
  background: var(--cinnabar);
}

.page-faq .faq-next {
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 22px;
  border-top: var(--faq-edge);
}

.page-faq .faq-next__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}

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

.page-faq .faq-next__list a {
  display: block;
  padding: 13px 16px;
  border: var(--faq-edge);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--paper);
  background: var(--ink-2);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-next__list a::after {
  content: "→";
  float: right;
  font-family: var(--font-mono);
  color: var(--gold);
}

.page-faq .faq-next__list a:hover,
.page-faq .faq-next__list a:focus-visible {
  border-color: rgba(201, 162, 39, 0.5);
  color: var(--gold-lt);
}

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

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.55fr);
  }

  .page-faq .faq-term-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (min-width: 1020px) {
  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }

  .page-faq .faq-figure--side,
  .page-faq .faq-figure {
    position: sticky;
    top: calc(var(--header-h) + 96px);
  }

  .page-faq .faq-terms {
    grid-template-columns: minmax(0, 0.6fr) minmax(0, 1fr);
  }

  .page-faq .faq-vendors {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
  }

  .page-faq .faq-timeline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
    border-top: 2px solid rgba(201, 162, 39, 0.32);
  }

  .page-faq .faq-node {
    border-left: 0;
    padding: 20px 18px 8px 0;
  }

  .page-faq .faq-node + .faq-node {
    padding-left: 18px;
    border-left: 1px solid rgba(28, 41, 66, 1);
  }
}