.page-faq {
  --faq-grid-line: rgba(217, 199, 166, 0.55);
  --faq-rule: var(--rule);
}

/* ── 页头 ───────────────────────────────────────── */

.page-faq .faq-head {
  position: relative;
  padding-block: 38px 26px;
}

.page-faq .faq-head::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px);
  background-size: 38px 38px;
  -webkit-mask-image: radial-gradient(ellipse at 84% 16%, #000 0%, transparent 64%);
  mask-image: radial-gradient(ellipse at 84% 16%, #000 0%, transparent 64%);
  opacity: 0.7;
  pointer-events: none;
}

.page-faq .faq-head > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-head .eyebrow {
  margin: 20px 0 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-faq .faq-head h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(30px, 6vw, 48px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-head__lead {
  max-width: 64ch;
  margin: 18px 0 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid var(--glass-line);
  border-radius: 999px;
  background: var(--glass);
  backdrop-filter: blur(6px);
  font-size: 14px;
  color: var(--blue);
  text-decoration: none;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--on-dark);
}

/* ── 通用章节 ───────────────────────────────────── */

.page-faq .faq-sec {
  padding-block: clamp(46px, 5.8vw, 86px);
}

.page-faq .faq-sec + .faq-sec {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-sec__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  margin-bottom: 36px;
}

.page-faq .faq-sec__head .chapter-num {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--blue);
  padding-top: 0.5em;
}

.page-faq .faq-sec__head .h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(23px, 3.4vw, 33px);
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-sec__head p {
  grid-column: 2;
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-2);
}

/* ── 01 常见问答 ────────────────────────────────── */

.page-faq .qa-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-faq .qa-col {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.page-faq .qa-group__title {
  margin: 0 0 10px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--blue);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.01em;
  color: var(--blue);
}

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

.page-faq .qa > summary {
  position: relative;
  display: block;
  padding: 15px 30px 15px 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: color 0.18s var(--ease), opacity 0.18s var(--ease);
}

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

.page-faq .qa > summary::after {
  content: "";
  position: absolute;
  top: 23px;
  right: 6px;
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--blue);
  border-bottom: 1.5px solid var(--blue);
  transform: rotate(45deg);
  transition: transform 0.26s var(--ease);
}

.page-faq .qa[open] > summary::after {
  transform: rotate(-135deg);
}

.page-faq .qa:not([open]) > summary {
  opacity: 0.86;
}

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--blue);
  opacity: 1;
}

.page-faq .qa[open] > summary {
  color: var(--blue);
}

.page-faq .qa__body {
  margin: 0 0 14px;
  padding: 15px 17px;
  border-radius: 4px;
  background: var(--paper-2);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .qa__body p {
  margin: 0;
}

.page-faq .qa__body p + p {
  margin-top: 10px;
}

.page-faq .qa__body a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--red);
  text-decoration-thickness: 1px;
}

/* ── 02 平板帮助中心 ────────────────────────────── */

.page-faq .faq-tablet__figure {
  margin: 0 0 34px;
}

.page-faq .faq-tablet__figure .media__frame {
  border-radius: 8px;
  overflow: hidden;
}

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

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .step {
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--glass-line);
  border-left: 3px solid var(--blue);
  border-radius: 0 8px 8px 0;
  background: var(--glass);
  backdrop-filter: blur(6px);
}

.page-faq .step__no {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--mono-ink);
}

.page-faq .step h3 {
  margin: 10px 0 10px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

/* ── 03 案例合集 ────────────────────────────────── */

.page-faq .faq-cases {
  background-image: linear-gradient(180deg, rgba(217, 199, 166, 0.2), rgba(217, 199, 166, 0) 58%);
}

.page-faq .faq-cases__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-faq .faq-cases__art {
  margin: 0;
}

.page-faq .faq-cases__art .media__frame {
  border-radius: 8px;
  overflow: hidden;
}

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

.page-faq .tabs__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 0 0 26px;
  padding: 0 0 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .tabs__list::-webkit-scrollbar {
  display: none;
}

.page-faq .tabs__tab {
  flex: none;
  padding: 8px 17px;
  border: 1px solid var(--faq-rule);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--ink);
  cursor: pointer;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .tabs__tab:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.page-faq .tabs__tab[aria-selected="true"] {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--on-dark);
}

.page-faq .tabs__panel[hidden] {
  display: none;
}

.page-faq .case-track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .case {
  padding: 18px 18px 20px;
  border-left: 3px solid var(--blue);
  border-radius: 0 8px 8px 0;
  background: var(--paper-2);
}

.page-faq .case__batch {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mono-ink);
}

.page-faq .case__batch::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red);
}

.page-faq .case__title {
  margin: 11px 0 9px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .case__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .case__result {
  margin: 13px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-rule);
  font-size: 14px;
  line-height: 1.75;
  color: var(--blue);
}

/* ── 04 提交与时效 ──────────────────────────────── */

.page-faq .faq-submit {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .faq-submit__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: sub;
  display: grid;
  gap: 20px;
}

.page-faq .faq-submit__list li {
  position: relative;
  counter-increment: sub;
  padding-left: 46px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-submit__list li::before {
  content: counter(sub, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--blue);
  padding-bottom: 3px;
  border-bottom: 1px solid var(--red);
}

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

.page-faq .faq-submit__side {
  padding: 28px 24px 30px;
  border-radius: 10px;
  background: var(--blue-deep);
  color: var(--on-dark);
}

.page-faq .faq-submit__side .h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 20px;
  color: var(--on-dark);
}

.page-faq .faq-timing {
  display: grid;
  gap: 16px;
  margin: 20px 0 0;
}

.page-faq .faq-timing dt {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--on-dark);
}

.page-faq .faq-timing dd {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark-2);
}

.page-faq .faq-submit__note {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(247, 241, 230, 0.22);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--on-dark-3);
}

.page-faq .faq-submit__note a {
  color: var(--on-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--red);
}

/* ── 05 联系客服 ────────────────────────────────── */

.page-faq .faq-further {
  padding-block: clamp(40px, 4.6vw, 64px) clamp(52px, 6vw, 88px);
}

.page-faq .faq-further__bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 30px 26px;
  border: 1px solid var(--faq-rule);
  border-radius: 10px;
  background: var(--paper-2);
}

.page-faq .faq-further__copy .h3 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .faq-further__copy p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-further__hint {
  margin-top: 14px !important;
  font-size: 14.5px !important;
  color: var(--ink-2) !important;
}

.page-faq .faq-further__hint a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--red);
}

.page-faq .faq-further__act {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ── 响应式 ─────────────────────────────────────── */

@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .page-faq .faq-tablet__figure {
    margin-bottom: 44px;
  }

  .page-faq .case-track {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .qa-cols {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px 32px;
    align-items: start;
  }

  .page-faq .qa-col {
    gap: 40px;
  }

  .page-faq .faq-cases__grid {
    grid-template-columns: 280px 1fr;
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-submit {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-sec__head {
    grid-template-columns: 56px 1fr;
    column-gap: 20px;
  }

  .page-faq .faq-further__bar {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 44px;
    padding: 34px 38px;
  }

  .page-faq .faq-further__act {
    flex-direction: column;
    align-items: stretch;
    min-width: 190px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-head {
    padding-block: 52px 30px;
  }

  .page-faq .tabs__list {
    flex-wrap: wrap;
    overflow: visible;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa > summary::after,
  .page-faq .faq-jump a,
  .page-faq .tabs__tab,
  .page-faq .qa > summary {
    transition: none;
  }
}