.page-faq {
  --faq-line: rgba(23, 24, 26, 0.12);
  --faq-soft: var(--paper-200);
  --faq-zebra: rgba(231, 225, 211, 0.28);
  display: block;
  background: var(--warm-white);
  color: var(--charcoal);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 48px) 0 clamp(34px, 5.5vw, 68px);
  border-bottom: 1px solid var(--faq-line);
  background-color: var(--warm-white);
  background-image:
    linear-gradient(rgba(23, 24, 26, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 24, 26, 0.045) 1px, transparent 1px);
  background-size: 88px 88px;
  background-position: -1px -1px;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
}

.page-faq .faq-hero__title {
  margin: 10px 0 18px;
  font-size: clamp(34px, 6.4vw, 74px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--charcoal);
  max-width: 15ch;
}

.page-faq .faq-hero__text {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .faq-hero__side {
  border-left: 2px solid var(--turf-600);
  padding-left: 18px;
}

.page-faq .faq-hero__side-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--slate-500);
}

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

.page-faq .faq-quick li + li {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-quick a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 4px;
  font-size: 15px;
  line-height: 1.4;
  color: var(--charcoal);
  text-decoration: none;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  color: var(--turf-600);
  transform: translateX(3px);
}

.page-faq .faq-quick .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--red);
  font-variant-numeric: tabular-nums;
}

/* ---------- 分类筛选条 ---------- */
.page-faq .faq-filter {
  position: relative;
  background: var(--indigo-900);
  color: var(--warm-white);
  padding: clamp(26px, 4vw, 38px) 0;
}

.page-faq .faq-filter::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--turf-600) 0%,
    var(--turf-600) 33%,
    var(--red) 33%,
    var(--red) 66%,
    var(--indigo-500) 66%,
    var(--indigo-500) 100%
  );
}

.page-faq .faq-filter__inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-filter__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--turf-300);
}

.page-faq .faq-filter .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-filter .filter-btn {
  appearance: none;
  border: 1px solid rgba(247, 243, 234, 0.28);
  background: rgba(255, 255, 255, 0.07);
  color: var(--warm-white);
  border-radius: 999px;
  padding: 9px 18px;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-filter .filter-btn:hover {
  background: rgba(255, 255, 255, 0.16);
}

.page-faq .faq-filter .filter-btn:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

.page-faq .faq-filter .filter-btn[aria-pressed="true"] {
  background: var(--turf-600);
  border-color: var(--turf-600);
  color: #ffffff;
  box-shadow: 0 0 0 3px rgba(30, 138, 87, 0.26);
}

.page-faq .faq-filter .filter-status {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(247, 243, 234, 0.66);
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-group {
  position: relative;
  padding: clamp(38px, 6vw, 76px) 0;
}

.page-faq .qa-group:nth-of-type(even) {
  background: var(--faq-zebra);
}

.page-faq .qa-group + .qa-group::before {
  content: "";
  position: absolute;
  top: 0;
  left: 6%;
  right: 6%;
  height: 1px;
  background: var(--faq-line);
  transform: rotate(-0.8deg);
  transform-origin: left center;
}

.page-faq .qa-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px 14px;
}

.page-faq .qa-group__no {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1;
  color: var(--red);
  font-variant-numeric: tabular-nums;
}

.page-faq .qa-group__title {
  margin: 0;
  font-size: clamp(22px, 3.1vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--charcoal);
}

.page-faq .qa-group__count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate-500);
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}

.page-faq .qa-group__lede {
  margin: 12px 0 clamp(20px, 3vw, 30px);
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate-500);
}

.page-faq .qa-group__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 36px);
}

/* ---------- 问答行 ---------- */
.page-faq .qa-list {
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: background 0.22s var(--ease);
}

.page-faq .qa[open]::before {
  background: var(--red);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: 17px 8px 17px 16px;
  list-style: none;
  cursor: pointer;
  transition: background 0.2s var(--ease);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover {
  background: rgba(231, 225, 211, 0.5);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: -2px;
}

.page-faq .qa__n {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate-500);
  font-variant-numeric: tabular-nums;
}

.page-faq .qa__qt {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.52;
  letter-spacing: -0.005em;
  color: var(--charcoal);
}

.page-faq .qa[open] .qa__qt {
  color: var(--turf-900);
}

.page-faq .qa__mark {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--turf-600);
  transition: transform 0.24s var(--ease), color 0.24s var(--ease);
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(45deg);
  color: var(--red);
}

.page-faq .qa__a {
  padding: 0 20px 22px 46px;
  max-width: 66ch;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

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

.page-faq .qa__a a {
  color: var(--indigo-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--red);
}

/* ---------- 配图 ---------- */
.page-faq .qa-group__figure {
  margin: 0;
}

.page-faq .qa-group__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  object-fit: cover;
}

.page-faq .qa-group__figure figcaption {
  margin-top: 12px;
  padding-left: 10px;
  border-left: 2px solid var(--turf-300);
  font-size: 12.5px;
  line-height: 1.66;
  color: var(--slate-500);
}

/* ---------- 人工联系 ---------- */
.page-faq .faq-contact {
  position: relative;
  background: var(--turf-900);
  color: var(--warm-white);
  padding: clamp(44px, 6.5vw, 84px) 0 clamp(36px, 5vw, 60px);
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--turf-600) 0%, var(--red) 55%, var(--indigo-500) 100%);
}

.page-faq .faq-contact .eyebrow {
  color: var(--turf-300);
}

.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.page-faq .faq-contact__title {
  margin: 10px 0 14px;
  font-size: clamp(26px, 3.8vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--warm-white);
}

.page-faq .faq-contact__text {
  margin: 0 0 14px;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(247, 243, 234, 0.78);
}

.page-faq .faq-contact .cluster {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-contact .btn--primary {
  background: var(--red);
  border-color: var(--red);
  color: #ffffff;
}

.page-faq .faq-contact .btn--primary:hover {
  background: var(--red-deep);
  border-color: var(--red-deep);
}

.page-faq .faq-contact .btn--outline {
  border-color: rgba(247, 243, 234, 0.42);
  color: var(--warm-white);
}

.page-faq .faq-contact .btn--outline:hover {
  border-color: var(--warm-white);
  background: rgba(255, 255, 255, 0.08);
}

.page-faq .faq-contact .btn:focus-visible {
  outline: 2px solid var(--turf-300);
  outline-offset: 3px;
}

.page-faq .faq-contact__list {
  margin: 0;
  border-top: 1px solid rgba(247, 243, 234, 0.2);
}

.page-faq .faq-contact__list div {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(247, 243, 234, 0.2);
}

.page-faq .faq-contact__list dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--turf-300);
}

.page-faq .faq-contact__list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--warm-white);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 26px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--turf-600);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(247, 243, 234, 0.62);
}

/* ---------- 响应式 ---------- */
@media (max-width: 599px) {
  .page-faq .qa__q {
    padding: 15px 6px 15px 12px;
    gap: 10px;
  }

  .page-faq .qa__a {
    padding: 0 10px 20px 30px;
  }

  .page-faq .faq-contact__list div {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-faq .faq-filter__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
  }

  .page-faq .qa-group--media .qa-group__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-faq .qa-group--media .qa-group__figure {
    margin-top: -16px;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick a,
  .page-faq .qa::before,
  .page-faq .qa__mark,
  .page-faq .faq-filter .filter-btn {
    transition: none;
  }

  .page-faq .faq-quick a:hover,
  .page-faq .faq-quick a:focus-visible {
    transform: none;
  }
}