.page-faq {
  --faq-index-w: 258px;
  --faq-pad: clamp(16px, 2.4vw, 22px);
  background: var(--ink-0);
  color: var(--paper);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-faq .ak-breadcrumb {
  padding: 18px 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 12px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 92% at 88% 0%, rgba(184, 255, 60, 0.14), transparent 58%),
    linear-gradient(155deg, var(--ink-1), var(--ink-0) 64%);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -1px;
  background-image:
    repeating-linear-gradient(90deg, rgba(42, 59, 49, 0.9) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(42, 59, 49, 0.45) 0 1px, transparent 1px 88px);
  -webkit-mask-image: linear-gradient(203deg, #000 0%, transparent 64%);
  mask-image: linear-gradient(203deg, #000 0%, transparent 64%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  padding: clamp(28px, 5vw, 56px) 0 clamp(34px, 5.5vw, 60px);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mint);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  font-weight: 900;
  max-width: 17ch;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 52ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

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

.page-faq .faq-hero__aside {
  border: 1px solid var(--line);
  border-left: 2px solid var(--acid);
  background: rgba(17, 28, 23, 0.9);
  padding: 16px 16px 8px;
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--mint);
}

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

.page-faq .faq-legend li {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-legend li:first-child {
  border-top: 0;
  padding-top: 2px;
}

.page-faq .faq-legend p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 索引 + 正文 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  padding-top: clamp(26px, 4vw, 46px);
}

.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--ink-1);
  padding: 14px 14px 12px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-index ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.page-faq .faq-index li {
  flex: 0 0 auto;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 10px;
  border-bottom: 2px solid transparent;
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: border-color var(--fast) var(--ease), color var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  border-bottom-color: var(--acid);
  color: var(--acid);
  background: var(--ink-2);
  outline: none;
}

.page-faq .faq-index .ak-num {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mint);
}

.page-faq .faq-index__meta {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.8;
  color: var(--muted);
  word-break: break-all;
}

.page-faq .faq-index__meta a {
  color: var(--mint);
  text-decoration: none;
}

.page-faq .faq-index__meta a:hover {
  color: var(--acid);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  margin-bottom: clamp(26px, 4vw, 44px);
  scroll-margin-top: 96px;
}

.page-faq .faq-section:last-child {
  margin-bottom: 0;
}

.page-faq .ak-section-head {
  margin-bottom: 14px;
}

.page-faq .ak-section-head__meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .ak-section-head__meta .ak-num {
  color: var(--signal);
  font-size: 12.5px;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  counter-reset: faq;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  background: var(--ink-1);
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: -1px;
}

.page-faq .faq-item[open] {
  border-left-color: var(--acid);
  background: var(--ink-2);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px var(--faq-pad);
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--paper);
  transition: color var(--fast) var(--ease);
}

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

.page-faq .faq-item summary::before {
  counter-increment: faq;
  content: counter(faq, decimal-leading-zero);
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mint);
}

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.2;
  color: var(--mint);
  transition: color var(--fast) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  color: var(--acid);
}

.page-faq .faq-item summary:hover {
  color: var(--acid);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: -2px;
}

.page-faq .faq-item__body {
  padding: 2px var(--faq-pad) 18px calc(var(--faq-pad) + 26px);
  border-top: 1px solid var(--line);
  margin-top: 0;
}

.page-faq .faq-item__body p {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-item__body p:first-child {
  margin-top: 14px;
}

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

.page-faq .faq-item__body a:hover {
  color: var(--acid);
}

.page-faq .faq-order {
  margin: 14px 0 0;
  padding-left: 1.2em;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-order li + li {
  margin-top: 6px;
}

.page-faq .faq-order li::marker {
  color: var(--signal);
  font-family: var(--font-mono);
}

/* ---------- 图文 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-faq .faq-figure {
  margin: 0 0 14px;
  border: 1px solid var(--line);
  background: var(--ink-1);
}

.page-faq .faq-split .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.02);
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.page-faq .faq-figure--wide {
  margin-bottom: clamp(14px, 2vw, 20px);
}

/* ---------- 自助排查 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: step;
  margin: 0 0 clamp(18px, 3vw, 26px);
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  counter-increment: step;
  position: relative;
  padding: 14px 16px 14px 54px;
  border: 1px solid var(--line);
  background: var(--ink-1);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--signal);
}

/* ---------- 客服面板 ---------- */
.page-faq .faq-support {
  border: 1px solid var(--line);
  border-top: 2px solid var(--acid);
  background:
    linear-gradient(180deg, rgba(33, 84, 60, 0.35), transparent 46%),
    var(--ink-1);
  padding: clamp(18px, 3vw, 28px);
}

.page-faq .faq-support__title {
  margin: 0 0 16px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-support__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-support__list li {
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-support__list span {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--mint);
}

.page-faq .faq-support__list a {
  color: var(--paper);
  font-size: 15.5px;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line);
  word-break: break-all;
}

.page-faq .faq-support__list a:hover {
  color: var(--acid);
  text-decoration-color: var(--acid);
}

.page-faq .faq-support__list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-support__note {
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 2px solid var(--signal);
  background: var(--ink-2);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-support__list li {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-faq .faq-hero__aside {
    transform: translateY(-6px);
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 84px;
  }

  .page-faq .faq-index ol {
    flex-direction: column;
    overflow: visible;
    gap: 0;
    padding-bottom: 0;
  }

  .page-faq .faq-index li {
    flex: 1 1 auto;
    border-top: 1px solid var(--line);
  }

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

  .page-faq .faq-index a {
    white-space: normal;
    padding: 11px 6px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    font-size: 14px;
    line-height: 1.5;
  }

  .page-faq .faq-index a:hover,
  .page-faq .faq-index a:focus-visible {
    border-bottom: 0;
    border-left-color: var(--acid);
    background: var(--ink-2);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero__lead {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after,
  .page-faq .faq-index a {
    transition: none;
  }

  .page-faq .faq-hero__aside {
    transform: none;
  }
}