.page-faq {
  --faq-rule: var(--line-300);
  --faq-gap: clamp(24px, 3.4vw, 48px);
  display: block;
  background: var(--white);
  color: var(--graphite-700);
}

.page-faq .crumb {
  padding: 18px 0 0;
  background: var(--mist-50);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background: linear-gradient(180deg, var(--mist-50) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--faq-rule);
  padding: clamp(22px, 3vw, 34px) 0 clamp(36px, 5vw, 64px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--faq-gap);
}

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

.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  font-size: clamp(1.85rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-900);
  max-width: 15em;
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 40em;
  font-size: 17px;
  line-height: 1.8;
  color: var(--graphite-700);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-faq .faq-fact__num {
  font-size: 26px;
  line-height: 1;
  color: var(--teal-600);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-fact__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--graphite-700);
  line-height: 1.5;
}

.page-faq .faq-hero__fig {
  min-width: 0;
  align-self: center;
}

/* ---------- 主体双列 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  padding: clamp(36px, 5vw, 72px) 0 clamp(48px, 6vw, 84px);
}

.page-faq .faq-index {
  border: 1px solid var(--faq-rule);
  background: var(--white);
  padding: 20px 18px 22px;
  min-width: 0;
}

.page-faq .faq-index .toc__title {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--teal-800);
  font-weight: 700;
}

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

.page-faq .toc__link {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 11px 10px 11px 13px;
  border-left: 3px solid transparent;
  background: transparent;
  color: var(--graphite-700);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}

.page-faq .toc__link .mono {
  color: var(--line-300);
  font-size: 12px;
  transition: color var(--dur) var(--ease);
}

.page-faq .toc__link:hover,
.page-faq .toc__link:focus-visible {
  background: var(--teal-100);
  border-left-color: var(--teal-600);
  color: var(--ink-900);
}

.page-faq .toc__link:hover .mono,
.page-faq .toc__link:focus-visible .mono {
  color: var(--teal-600);
}

.page-faq .toc__link[aria-current="location"] {
  background: var(--action-100);
  border-left-color: var(--action-500);
  color: var(--ink-900);
  font-weight: 700;
}

.page-faq .toc__link[aria-current="location"] .mono {
  color: var(--action-600);
}

.page-faq .faq-index__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-rule);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--graphite-700);
}

.page-faq .faq-index__note a {
  color: var(--teal-800);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-600);
}

.page-faq .faq-index__note a:hover,
.page-faq .faq-index__note a:focus-visible {
  color: var(--action-600);
  border-bottom-color: var(--action-500);
}

.page-faq .faq-body {
  min-width: 0;
  display: grid;
  gap: clamp(40px, 5vw, 64px);
}

/* ---------- 分节标题 ---------- */
.page-faq .faq-sec {
  min-width: 0;
}

.page-faq .faq-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  align-items: baseline;
  padding-bottom: 16px;
  margin-bottom: 22px;
  border-bottom: 2px solid var(--ink-900);
}

.page-faq .faq-sec__num {
  grid-row: 1;
  grid-column: 1;
  font-size: 15px;
  color: var(--action-500);
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-sec__title {
  grid-row: 1;
  grid-column: 2;
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}

.page-faq .faq-sec__note {
  grid-row: 2;
  grid-column: 2;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--graphite-700);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  background: var(--white);
  border: 1px solid var(--faq-rule);
  border-left: 3px solid var(--line-300);
  margin-bottom: 10px;
  transition: border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--teal-600);
}

.page-faq .faq-item[open] {
  border-left-color: var(--action-500);
  box-shadow: 0 10px 24px -22px rgba(11, 42, 51, 0.6);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-900);
  list-style: none;
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--teal-600);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  color: var(--action-500);
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--teal-800);
}

.page-faq .faq-item__body {
  padding: 2px 20px 22px;
  border-top: 1px dashed var(--faq-rule);
  margin-top: 0;
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 42px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--graphite-700);
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--teal-600);
  font-variant-numeric: tabular-nums;
}

/* ---------- 下载章节的双栏 ---------- */
.page-faq .faq-dl-grid {
  display: grid;
  gap: clamp(24px, 3vw, 36px);
}

.page-faq .faq-dl-grid__items {
  min-width: 0;
}

.page-faq .faq-dl-grid__fig {
  min-width: 0;
}

.page-faq .faq-dl-grid__hint {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--action-500);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--graphite-700);
}

/* ---------- 转人工 ---------- */
.page-faq .faq-sec--support {
  padding-top: clamp(8px, 1.5vw, 16px);
}

.page-faq .faq-support__grid {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
}

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

.page-faq .faq-support__text .prose {
  max-width: 44em;
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 4px;
}

.page-faq .faq-signals {
  list-style: none;
  margin: 18px 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-signals > li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--graphite-700);
}

.page-faq .faq-signals > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 8px;
  border-radius: 1px;
  background: var(--action-500);
}

.page-faq .faq-ticket {
  background: var(--teal-100);
  border: 1px solid var(--line-300);
  padding: 22px 20px 24px;
  min-width: 0;
}

.page-faq .faq-ticket .eyebrow {
  margin: 0;
  color: var(--teal-800);
}

.page-faq .faq-template {
  margin: 14px 0 0;
  padding: 16px;
  background: var(--white);
  border: 1px dashed var(--line-300);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 2;
  color: var(--ink-900);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-faq .faq-ticket__note {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--teal-800);
  word-break: break-word;
}

/* ---------- 底部行动带 ---------- */
.page-faq .faq-contact {
  background: var(--ink-900);
  color: var(--white);
  padding: clamp(44px, 6vw, 72px) 0;
}

.page-faq .faq-contact__inner {
  display: grid;
  gap: 28px;
}

.page-faq .faq-contact .eyebrow {
  margin: 0 0 12px;
  color: var(--amber-400);
}

.page-faq .faq-contact__title {
  margin: 0 0 14px;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-contact__text {
  margin: 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--teal-100);
}

.page-faq .faq-contact__actions {
  flex-wrap: wrap;
}

/* ---------- 焦点可见性 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq .toc__link:focus-visible {
  outline: 2px solid var(--action-500);
  outline-offset: 2px;
}

/* ---------- 图片自适应 ---------- */
.page-faq img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-dl-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

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

  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-faq .faq-layout {
    grid-template-columns: 268px minmax(0, 1fr);
    align-items: start;
  }

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

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

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

  .page-faq .faq-sec__num,
  .page-faq .faq-sec__title,
  .page-faq .faq-sec__note {
    grid-column: 1;
  }

  .page-faq .faq-sec__num {
    grid-row: 1;
  }

  .page-faq .faq-sec__title {
    grid-row: 2;
  }

  .page-faq .faq-sec__note {
    grid-row: 3;
    margin-top: 6px;
  }

  .page-faq .faq-steps > li {
    padding-left: 34px;
  }

  .page-faq .faq-item__body {
    padding: 2px 14px 18px;
  }

  .page-faq .btn--lg {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .toc__link,
  .page-faq .toc__link .mono,
  .page-faq .faq-item > summary::after {
    transition: none;
  }
}
<<<END>>>