.page-faq {
  display: block;
  background: var(--c-base);
  color: var(--c-ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(112px, 15vh, 186px) 0 clamp(40px, 5vw, 60px);
  background:
    radial-gradient(120% 90% at 84% 0%, rgba(53, 224, 208, 0.10), transparent 58%),
    linear-gradient(180deg, var(--c-panel) 0%, var(--c-base) 78%);
  border-bottom: var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(140, 154, 147, 0.10) 0 1px, transparent 1px 72px);
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(28px, 4vw, 60px);
  align-items: end;
}

.page-faq .faq-hero__lead {
  position: relative;
  padding-left: 18px;
}

.page-faq .faq-hero__lead::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-cyan), rgba(53, 224, 208, 0) 72%);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-size: var(--step-h1);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
  max-width: 20ch;
  color: var(--c-ink);
}

.page-faq .faq-hero__intro {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: var(--step-body);
  line-height: 1.8;
  color: rgba(237, 232, 219, 0.82);
}

.page-faq .faq-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--grid-gap);
  margin: 38px 0 0;
  padding-top: 18px;
  border-top: var(--line);
}

.page-faq .faq-hero__facts dt {
  font-family: var(--font-body);
  font-size: var(--step-note);
  letter-spacing: 0.08em;
  color: var(--c-rock);
}

.page-faq .faq-hero__facts dd {
  margin: 8px 0 0;
  font-family: var(--font-num);
  font-size: clamp(19px, 2vw, 26px);
  line-height: 1;
  color: var(--c-cyan);
}

.page-faq .faq-hero__figure {
  margin: 0;
  position: relative;
  border: var(--line);
  background: var(--c-seam);
}

.page-faq .faq-hero__figure::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 68px;
  height: 2px;
  background: var(--c-cyan);
  z-index: 1;
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 2px;
  height: 68px;
  background: var(--c-cyan);
  z-index: 1;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-hero__cap {
  padding: 10px 12px;
  border-top: var(--line);
  font-size: var(--step-note);
  line-height: 1.6;
  color: var(--c-rock);
  letter-spacing: 0.03em;
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  border-bottom: var(--line);
  background: var(--c-base);
}

.page-faq .faq-index__label {
  margin: 0;
  padding: 14px var(--pad-x) 10px;
  font-size: var(--step-note);
  letter-spacing: 0.18em;
  color: var(--c-rock);
}

.page-faq .faq-index__list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  border-top: var(--line);
}

.page-faq .faq-index__item {
  flex: 0 0 auto;
  min-width: 150px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 16px 18px;
  border-right: var(--line);
  border-top: 2px solid transparent;
  color: var(--c-rock);
  text-decoration: none;
  transition: color 0.28s var(--ease), background 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  color: var(--c-ink);
  background: var(--c-panel);
  border-top-color: var(--c-cyan);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-rock);
  transition: color 0.28s var(--ease);
}

.page-faq .faq-index__item:hover .faq-index__num,
.page-faq .faq-index__item:focus-visible .faq-index__num {
  color: var(--c-cyan);
}

.page-faq .faq-index__name {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* ---------- 内容区块 ---------- */
.page-faq .faq-block {
  position: relative;
  padding: clamp(46px, 6vw, 86px) 0;
  border-bottom: var(--line);
}

.page-faq .faq-block--alt {
  background: linear-gradient(180deg, rgba(27, 59, 48, 0.45), rgba(11, 20, 16, 0) 82%);
}

.page-faq .faq-block__grid {
  display: grid;
  gap: clamp(22px, 3vw, 46px);
}

.page-faq .faq-block__side {
  position: relative;
}

.page-faq .faq-block__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(26px, 2.6vw, 38px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-rock);
}

.page-faq .faq-block[data-accent="cyan"] .faq-block__num {
  color: var(--c-cyan);
}

.page-faq .faq-block[data-accent="blue"] .faq-block__num {
  color: var(--c-blue-b);
}

.page-faq .faq-block[data-accent="amber"] .faq-block__num {
  color: var(--c-amber);
}

.page-faq .faq-block[data-accent="orange"] .faq-block__num {
  color: var(--c-orange);
}

.page-faq .faq-block[data-accent="hot"] .faq-block__num {
  color: var(--c-hot);
}

.page-faq .faq-block[data-accent="clay"] .faq-block__num {
  color: var(--c-clay);
}

.page-faq .faq-block__side h2 {
  font-family: var(--font-head);
  font-size: var(--step-h2);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
  color: var(--c-ink);
}

.page-faq .faq-block__lede {
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 2px solid rgba(140, 154, 147, 0.42);
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-rock);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .faq-q {
  border-top: var(--line);
  border-bottom: var(--line);
  margin-bottom: -1px;
  background: transparent;
}

.page-faq .faq-q > summary {
  position: relative;
  display: block;
  padding: 20px 96px 20px 0;
  font-family: var(--font-head);
  font-size: clamp(16px, 1.25vw, 19px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-ink);
  cursor: pointer;
  list-style: none;
  transition: color 0.28s var(--ease);
}

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

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

.page-faq .faq-q > summary:hover,
.page-faq .faq-q > summary:focus-visible {
  color: var(--c-cyan);
  outline: none;
}

.page-faq .faq-q > summary::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 40px;
  height: 1px;
  background: var(--c-rock);
  transform: translateY(-50%);
  transition: width 0.34s var(--ease), background 0.34s var(--ease);
}

.page-faq .faq-q > summary::before {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 1px;
  height: 9px;
  background: var(--c-rock);
  transform: translateY(-50%) scaleY(1);
  transition: transform 0.34s var(--ease), background 0.34s var(--ease);
}

.page-faq .faq-q[open] > summary::after {
  width: 72px;
  background: var(--c-cyan);
}

.page-faq .faq-q[open] > summary::before {
  transform: translateY(-50%) scaleY(0);
  background: var(--c-cyan);
}

.page-faq .faq-q > .fold__body {
  padding: 0 0 22px;
  max-width: 74ch;
  font-size: var(--step-body);
  line-height: 1.8;
  color: rgba(237, 232, 219, 0.84);
  animation: faqIn 0.36s var(--ease);
}

.page-faq .faq-q > .fold__body p {
  margin: 0 0 12px;
}

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

.page-faq .faq-q > .fold__body a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.45);
}

.page-faq .faq-q > .fold__body a:hover {
  border-bottom-color: var(--c-cyan);
}

@keyframes faqIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-key {
  color: var(--c-cyan);
  font-weight: 600;
}

.page-faq .faq-key--amber {
  color: var(--c-amber);
  font-weight: 600;
}

.page-faq .faq-note {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(140, 154, 147, 0.32);
  font-family: var(--font-num);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--c-rock);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 2.6vw, 32px);
  border: var(--line);
  background: var(--c-seam);
  overflow: hidden;
}

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

.page-faq .faq-figure__cap {
  padding: 10px 14px;
  border-top: var(--line);
  font-size: var(--step-note);
  line-height: 1.6;
  color: var(--c-rock);
  letter-spacing: 0.03em;
}

/* ---------- 反馈步骤与联系 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0 0 clamp(22px, 2.8vw, 34px);
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 48px;
  font-size: var(--step-body);
  line-height: 1.8;
  color: rgba(237, 232, 219, 0.86);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 3px 7px;
  border: var(--line);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

.page-faq .faq-contact {
  margin: 0;
  padding: clamp(20px, 2.4vw, 30px);
  border: var(--line);
  border-top: 2px solid var(--c-clay);
  background: var(--c-panel);
  display: grid;
  gap: 20px;
}

.page-faq .faq-contact__item dt {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-rock);
}

.page-faq .faq-contact__item dd {
  margin: 8px 0 0;
  font-family: var(--font-num);
  font-size: clamp(14px, 1.1vw, 16px);
  line-height: 1.6;
  color: var(--c-ink);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 16px;
  border-top: var(--line);
  font-size: var(--step-note);
  line-height: 1.8;
  color: var(--c-rock);
}

.page-faq .faq-contact__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.45);
}

.page-faq .faq-contact__note a:hover {
  border-bottom-color: var(--c-cyan);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.18fr) minmax(240px, 0.7fr);
  }
}

@media (min-width: 860px) {
  .page-faq .faq-index__list {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    overflow: visible;
  }

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

@media (min-width: 920px) {
  .page-faq .faq-block__grid {
    grid-template-columns: minmax(230px, 300px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-block__side {
    position: sticky;
    top: 104px;
  }
}

@media (max-width: 620px) {
  .page-faq .faq-q > summary {
    padding-right: 64px;
    font-size: 16px;
  }

  .page-faq .faq-q > summary::after {
    width: 28px;
  }

  .page-faq .faq-q[open] > summary::after {
    width: 48px;
  }

  .page-faq .faq-index__label {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-faq .faq-hero__facts dd {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q > .fold__body {
    animation: none;
  }

  .page-faq .faq-q > summary::after,
  .page-faq .faq-q > summary::before,
  .page-faq .faq-index__item {
    transition: none;
  }
}