.page-faq {
  --faq-line: rgba(124, 138, 145, .22);
  --faq-line-strong: rgba(124, 138, 145, .4);
  --faq-soft: rgba(242, 237, 227, .8);
  display: block;
  background: var(--ink-800);
  color: var(--paper);
  font-family: var(--font-sans);
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow-x: hidden;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(18px, 3vw, 32px) clamp(40px, 6vw, 76px);
  background:
    radial-gradient(75% 65% at 90% 0%, rgba(212, 175, 55, .16), transparent 62%),
    radial-gradient(60% 55% at 2% 96%, rgba(95, 167, 156, .13), transparent 60%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-700) 100%);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(124, 138, 145, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 138, 145, .07) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(22px, 4vw, 44px);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(36px, 8vw, 76px);
  line-height: 1.07;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  color: var(--gold);
  background: linear-gradient(180deg, transparent 74%, rgba(212, 175, 55, .22) 74%);
}

.page-faq .faq-lede {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero-figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--ink-900);
  box-shadow: var(--shadow-soft);
}

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

.page-faq .figure-cap {
  padding: 12px 16px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--rock);
}

/* ---------- 分组导航 ---------- */

.page-faq .faq-index {
  background: var(--ink-900);
  padding-block: clamp(40px, 6vw, 72px);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-index-head .section-title {
  font-family: var(--font-serif);
  letter-spacing: -.01em;
}

.page-faq .faq-index-head .section-lede {
  margin-top: 10px;
  color: var(--faq-soft);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--faq-line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  background: var(--ink-800);
  color: var(--paper);
  text-decoration: none;
  transition: background .25s var(--ease), color .25s var(--ease);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  background: var(--ink-700);
  outline: none;
}

.page-faq .faq-index-no {
  flex: none;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gold);
  letter-spacing: .06em;
}

.page-faq .faq-index-text {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-faq .faq-index-name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
}

.page-faq .faq-index-list a:hover .faq-index-name,
.page-faq .faq-index-list a:focus-visible .faq-index-name {
  color: var(--gold);
}

.page-faq .faq-index-meta {
  font-size: 13px;
  line-height: 1.6;
  color: var(--rock);
}

.page-faq .faq-index-list li:nth-child(3n + 1) .faq-index-no { color: var(--gold); }
.page-faq .faq-index-list li:nth-child(3n + 2) .faq-index-no { color: var(--jade); }
.page-faq .faq-index-list li:nth-child(3n) .faq-index-no { color: var(--cinnabar); }

/* ---------- 主体布局 ---------- */

.page-faq .faq-body {
  padding-block: clamp(40px, 6vw, 84px);
  background:
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-800) 60%, var(--ink-900) 100%);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
  align-items: start;
}

.page-faq .faq-toc {
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background: var(--ink-700);
  padding: 18px 16px;
}

.page-faq .faq-toc-title {
  margin: 0 0 10px;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--rock);
}

.page-faq .faq-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc a {
  display: block;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  border-radius: var(--r-sm);
  font-size: 14px;
  line-height: 1.5;
  color: var(--faq-soft);
  text-decoration: none;
  transition: color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--gold);
  border-left-color: var(--gold);
  background: rgba(212, 175, 55, .08);
  outline: none;
}

.page-faq .faq-toc-cta {
  display: block;
  margin-top: 14px;
  padding: 12px 12px 2px;
  border-top: 1px solid var(--faq-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--jade);
  text-decoration: none;
}

.page-faq .faq-toc-cta:hover,
.page-faq .faq-toc-cta:focus-visible {
  color: var(--gold);
  outline: none;
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-groups {
  display: grid;
  gap: clamp(42px, 5vw, 78px);
}

.page-faq .faq-groups > .faq-group:nth-child(1) { --accent: var(--gold); }
.page-faq .faq-groups > .faq-group:nth-child(2) { --accent: var(--jade); }
.page-faq .faq-groups > .faq-group:nth-child(3) { --accent: var(--cinnabar); }
.page-faq .faq-groups > .faq-group:nth-child(4) { --accent: var(--clay); }
.page-faq .faq-groups > .faq-group:nth-child(5) { --accent: var(--moss); }
.page-faq .faq-groups > .faq-group:nth-child(6) { --accent: var(--gold-deep); }

.page-faq .faq-group {
  border-top: 3px solid var(--accent, var(--gold));
  padding-top: clamp(18px, 2.4vw, 26px);
  scroll-margin-top: 120px;
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "no title"
    "lede lede";
  gap: 6px 14px;
  align-items: center;
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq .faq-group-no {
  grid-area: no;
  font-size: 22px;
  line-height: 1;
  color: var(--accent, var(--gold));
  letter-spacing: .04em;
}

.page-faq .faq-group-title {
  grid-area: title;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-group-lede {
  grid-area: lede;
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-soft);
}

/* ---------- 手风琴 ---------- */

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

.page-faq .faq-item:first-of-type {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
  transition: color .22s var(--ease);
}

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

.page-faq .faq-q:hover,
.page-faq .faq-q:focus-visible {
  color: var(--accent, var(--gold));
  outline: none;
}

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

.page-faq .faq-q-icon {
  position: relative;
  flex: none;
  width: 24px;
  height: 24px;
  margin-top: 1px;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--r-pill);
  transition: border-color .28s var(--ease), background .28s var(--ease);
}

.page-faq .faq-q-icon::before,
.page-faq .faq-q-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--accent, var(--gold));
  transform: translate(-50%, -50%);
}

.page-faq .faq-q-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: opacity .24s var(--ease);
}

.page-faq .faq-item[open] .faq-q-icon {
  border-color: var(--accent, var(--gold));
  background: rgba(212, 175, 55, .1);
}

.page-faq .faq-item[open] .faq-q-icon::after {
  opacity: 0;
}

.page-faq .faq-a {
  max-width: 68ch;
  padding: 0 0 22px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .faq-a > p {
  margin: 0 0 .85em;
}

.page-faq .faq-a > p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-more {
  font-size: 14px;
}

.page-faq .faq-more a {
  color: var(--accent, var(--gold));
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 175, 55, .42);
  padding-bottom: 1px;
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  color: var(--gold);
  outline: none;
}

.page-faq .faq-steps,
.page-faq .faq-check {
  counter-reset: faqstep;
  list-style: none;
  margin: 14px 0 4px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 42px;
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 22px;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--accent, var(--gold));
}

.page-faq .faq-check li {
  position: relative;
  padding-left: 28px;
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-check li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 6px;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--accent, var(--jade));
  border-bottom: 2px solid var(--accent, var(--jade));
  transform: rotate(-45deg);
}

.page-faq .faq-figure {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-900);
}

/* ---------- 收尾联系 ---------- */

.page-faq .faq-help {
  background: var(--ink-950);
  border-top: 1px solid var(--faq-line);
  padding-block: clamp(40px, 6vw, 76px);
  position: relative;
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--jade) 52%, var(--cinnabar));
}

.page-faq .faq-help-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-help h2 {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-help-copy > p:not(.eyebrow) {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .faq-help-contact {
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  padding: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-contact-line {
  display: grid;
  gap: 4px;
  margin: 0 0 14px;
  min-width: 0;
}

.page-faq .faq-contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--rock);
}

.page-faq .faq-contact-value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-value.num {
  color: var(--gold);
  letter-spacing: .02em;
}

.page-faq .faq-copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 18px 0 0;
}

.page-faq .copy-status {
  font-size: 13px;
  color: var(--jade);
}

.page-faq .faq-help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--faq-line);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
    align-items: end;
  }

  .page-faq .faq-help-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 440px);
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, 250px) minmax(0, 1fr);
  }

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

@media (min-width: 1080px) {
  .page-faq .faq-index-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-list a,
  .page-faq .faq-toc a,
  .page-faq .faq-q,
  .page-faq .faq-q-icon,
  .page-faq .faq-q-icon::after {
    transition: none;
  }
}