.page-faq {
  padding: clamp(18px, 2.6vw, 32px) 0 clamp(56px, 8vw, 104px);
  color: var(--text);
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(16px, 2vw, 24px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ink-2);
  border-radius: var(--radius);
  padding: clamp(22px, 4vw, 48px);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(53, 224, 208, 0.1) 0%, transparent 55%),
    linear-gradient(150deg, #111A2E 0%, #080D1A 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--red) 0%, var(--cyan) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 14px;
  right: 14px;
  width: 58px;
  height: 58px;
  border-top: 1px solid var(--ink-2);
  border-right: 1px solid var(--ink-2);
  pointer-events: none;
}

.page-faq .faq-hero .eyebrow {
  margin: 0;
  color: var(--dim);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 16px;
  max-width: 18em;
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.26;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
  color: var(--dim);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 24px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--ink-2);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  font-size: 13px;
  color: var(--dim);
}

.page-faq .faq-hero__meta .mono {
  margin-right: 5px;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

/* ---------- 主体分栏 ---------- */

.page-faq .faq-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(28px, 4vw, 48px);
}

/* ---------- 左侧分类索引 ---------- */

.page-faq .faq-index {
  position: relative;
  border: 1px solid var(--ink-2);
  border-radius: var(--radius);
  background: var(--ink-1);
  padding: 6px 12px 10px 6px;
}

.page-faq .faq-index::after {
  content: "";
  position: absolute;
  top: 12px;
  right: 4px;
  bottom: 12px;
  width: 4px;
  background: repeating-linear-gradient(180deg, var(--ink-2) 0 1px, transparent 1px 9px);
  pointer-events: none;
}

.page-faq .faq-index__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 8px 12px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--ink-2);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.page-faq .faq-index__total {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

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

.page-faq .faq-index .filter-btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 8px 10px 12px;
  border: 0;
  border-left: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--dim);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  text-align: left;
  cursor: pointer;
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.page-faq .faq-index .filter-btn:hover {
  color: var(--text);
  background: rgba(31, 44, 69, 0.5);
}

.page-faq .faq-index .filter-btn.is-in {
  color: var(--text);
  border-left-color: var(--red);
  background: linear-gradient(90deg, rgba(226, 59, 50, 0.16), transparent 82%);
}

.page-faq .faq-index__num {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.page-faq .faq-index .filter-btn.is-in .faq-index__num {
  color: var(--red);
}

.page-faq .faq-index__text {
  overflow-wrap: break-word;
}

/* ---------- 右侧问答 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: clamp(24px, 3.4vw, 42px);
  min-width: 0;
}

.page-faq .faq-group {
  display: grid;
  gap: 16px;
  min-width: 0;
  padding-top: clamp(20px, 2.6vw, 28px);
  border-top: 1px solid var(--ink-2);
}

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

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.page-faq .faq-group__no {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--red);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.005em;
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--dim);
}

.page-faq .faq-group__desc {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--dim);
}

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--ink-2);
  border-radius: var(--radius);
  background: var(--ink-0);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.06);
}

.page-faq .faq-figure__cap {
  padding: 9px 12px;
  border-top: 1px solid var(--ink-2);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.page-faq .faq-group__list {
  display: grid;
  gap: 8px;
  min-width: 0;
}

/* ---------- 折叠问答卡片 ---------- */

.page-faq .faq-item {
  border: 1px solid var(--ink-2);
  border-radius: var(--radius);
  background: var(--ink-1);
  transition: border-color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(53, 224, 208, 0.42);
  background:
    linear-gradient(180deg, rgba(53, 224, 208, 0.05), transparent 62%),
    var(--ink-1);
}

.page-faq .faq-item__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .faq-item__sum::after {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 7px;
  border-right: 1.5px solid var(--dim);
  border-bottom: 1.5px solid var(--dim);
  transform: rotate(45deg);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__sum::after {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.page-faq .faq-item__no {
  padding-top: 5px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--cyan);
}

.page-faq .faq-item__q {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 600;
  line-height: 1.58;
  color: var(--text);
}

.page-faq .faq-item__body {
  padding: 14px 16px 18px;
  border-top: 1px dashed rgba(31, 44, 69, 0.9);
}

.page-faq .faq-verdict {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

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

.page-faq .faq-item__body a,
.page-faq .faq-help__note a,
.page-faq .faq-help__lead a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.35);
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-help__note a:hover,
.page-faq .faq-help__lead a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  margin-top: 3px;
  padding: 2px 6px;
  border: 1px solid rgba(53, 224, 208, 0.28);
  border-radius: var(--radius);
  background: rgba(53, 224, 208, 0.1);
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.25;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* ---------- 人工支持 ---------- */

.page-faq .faq-help {
  margin-top: clamp(32px, 4.6vw, 56px);
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(20px, 3.4vw, 40px);
  border: 1px solid rgba(226, 59, 50, 0.38);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(226, 59, 50, 0.1) 0%, transparent 44%),
    var(--ink-1);
}

.page-faq .faq-help .eyebrow {
  margin: 0;
  color: var(--red);
}

.page-faq .faq-help__title {
  margin: 8px 0 12px;
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1.35;
}

.page-faq .faq-help__lead {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--dim);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--dim);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 1px;
  background: var(--red);
}

.page-faq .faq-help__note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--dim);
}

.page-faq .faq-help__cards {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-contact-card {
  padding: 14px 16px;
  border: 1px solid var(--ink-2);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius);
  background: var(--ink-0);
}

.page-faq .faq-contact-card span {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--dim);
}

.page-faq .faq-contact-card__value {
  margin: 6px 0 4px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-card__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--dim);
}

/* ---------- 响应式 ---------- */

@media (min-width: 900px) {
  .page-faq .faq-board {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: clamp(24px, 3vw, 44px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--topbar-h, 68px) + 14px);
  }
}

@media (min-width: 880px) {
  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-item__sum {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px;
    padding: 14px 14px;
  }

  .page-faq .faq-item__sum::after {
    display: none;
  }

  .page-faq .faq-item__body {
    padding: 12px 14px 16px;
  }

  .page-faq .faq-hero__meta {
    gap: 8px 18px;
  }
}

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