.page-faq {
  --faq-hair: rgba(74, 93, 122, 0.4);
  background-color: var(--bone);
  background-image:
    linear-gradient(to right, rgba(74, 93, 122, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(74, 93, 122, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--ink);
  font-family: var(--font-sans);
  padding-bottom: 88px;
  overflow-x: hidden;
}

.page-faq a {
  color: inherit;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 3px solid var(--ink);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 18px;
  max-width: 620px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.04em;
  color: var(--ink);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 62ch;
  padding-left: 16px;
  border-left: 4px solid var(--red);
  font-size: clamp(15px, 2.3vw, 17px);
  line-height: 1.8;
  color: var(--navy);
}

.page-faq .faq-banner {
  margin-top: 36px;
  margin-bottom: 0;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
}

/* ---------- 章节标题 ---------- */
.page-faq .faq-h2 {
  margin: 0 0 14px;
  padding-top: 14px;
  border-top: 2px solid var(--red);
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(21px, 4vw, 32px);
  line-height: 1.22;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-faq .faq-sub {
  margin: 0 0 20px;
  max-width: 64ch;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--faq-hair);
  font-size: 15px;
  line-height: 1.8;
  color: var(--navy);
}

/* ---------- 快速入口 ---------- */
.page-faq .faq-quick {
  margin-top: 64px;
}

.page-faq .quick-cards {
  display: grid;
  gap: 16px;
  margin-top: 6px;
}

.page-faq .quick-card {
  position: relative;
  display: block;
  padding: 26px 20px 22px 36px;
  background: var(--bone);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
  text-decoration: none;
  color: var(--ink);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), background var(--t) var(--ease);
}

.page-faq .quick-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 14px;
  border-right: 2px solid var(--ink);
  background-image: repeating-linear-gradient(180deg, var(--red) 0 12px, var(--bone) 12px 24px);
}

.page-faq .quick-card:hover,
.page-faq .quick-card:focus-visible {
  transform: translate(-3px, -3px);
  background: var(--sand);
  box-shadow: 9px 9px 0 var(--red-deep);
}

.page-faq .quick-card:focus-visible {
  outline: 3px solid var(--red-deep);
  outline-offset: 3px;
}

.page-faq .quick-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--red-deep);
}

.page-faq .quick-name {
  display: block;
  margin-bottom: 8px;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.page-faq .quick-desc {
  display: block;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--navy);
}

.page-faq .quick-go {
  display: block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--red-deep);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 28px;
  margin-top: 64px;
  align-items: start;
}

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

.page-faq .faq-rail {
  padding: 14px 14px 10px;
  border: 2px solid var(--steel);
  background: var(--sand);
}

.page-faq .faq-rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy);
}

.page-faq .faq-rail ul {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

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

.page-faq .rail-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  border: 2px solid transparent;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--navy);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-faq .rail-link:hover,
.page-faq .rail-link:focus-visible {
  background: var(--red);
  border-color: var(--red-deep);
  color: var(--bone);
}

.page-faq .rail-link:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 2px;
}

.page-faq .rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--red-deep);
}

.page-faq .rail-link:hover .rail-num,
.page-faq .rail-link:focus-visible .rail-num {
  color: var(--bone);
}

/* ---------- 问答区块 ---------- */
.page-faq .faq-section {
  scroll-margin-top: 24px;
}

.page-faq .faq-section + .faq-section {
  margin-top: 56px;
  padding-top: 8px;
  border-top: 2px solid var(--ink);
}

.page-faq .qa {
  border: 2px solid var(--navy);
  background: var(--bone);
  transition: box-shadow var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-faq .qa + .qa {
  margin-top: 12px;
}

.page-faq .qa[open] {
  box-shadow: 6px 6px 0 var(--sand);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: background var(--t) var(--ease);
}

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

.page-faq .qa summary:hover {
  background: var(--sand);
}

.page-faq .qa summary:focus-visible {
  outline: 3px solid var(--red-deep);
  outline-offset: -3px;
}

.page-faq .qa summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--red);
}

.page-faq .qa[open] summary::after {
  content: "–";
}

.page-faq .qa-num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--red-deep);
}

.page-faq .qa-a {
  padding: 0 16px 20px;
}

.page-faq .qa-a p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--navy);
}

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

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

.page-faq .qa-a a:hover {
  color: var(--ink);
}

/* ---------- 等宽步骤 ---------- */
.page-faq .steps {
  counter-reset: step;
  display: grid;
  gap: 10px;
  margin: 2px 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: 15px;
  line-height: 1.75;
  color: var(--navy);
}

.page-faq .steps li::before {
  content: counter(step, decimal-leading-zero);
  padding: 4px 0;
  background: var(--navy);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--bone);
  text-align: center;
}

/* ---------- 旧版资料 ---------- */
.page-faq .archive-block {
  display: grid;
  gap: 20px;
  margin-bottom: 8px;
}

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

.page-faq .archive-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--steel);
  filter: grayscale(1);
  transition: filter 200ms var(--ease);
}

.page-faq .archive-figure:hover img {
  filter: grayscale(0);
}

/* ---------- 联系卡 ---------- */
.page-faq .faq-contact {
  margin-top: 26px;
  padding: 22px 20px;
  border: 3px solid var(--ink);
  background: var(--navy);
  color: var(--bone);
  box-shadow: 8px 8px 0 var(--red-deep);
}

.page-faq .fc-title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sand);
}

.page-faq .fc-row {
  display: grid;
  gap: 6px;
  justify-items: start;
  padding: 14px 0;
  border-top: 1px solid rgba(247, 243, 236, 0.22);
}

.page-faq .fc-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sand);
}

.page-faq .fc-value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--bone);
  overflow-wrap: anywhere;
}

.page-faq .fc-copy {
  margin-top: 4px;
  padding: 6px 14px;
  border: 2px solid var(--bone);
  background: var(--red);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  color: var(--bone);
  cursor: pointer;
  transition: background var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-faq .fc-copy:hover {
  background: var(--red-deep);
  transform: translateY(-2px);
}

.page-faq .fc-copy:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 2px;
}

.page-faq .copy-status {
  font-size: 12px;
  line-height: 1.6;
  color: var(--yellow);
}

.page-faq .fc-note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(247, 243, 236, 0.22);
  font-size: 13px;
  line-height: 1.75;
  color: var(--sand);
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-faq .quick-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .archive-block {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-faq .faq-contact {
    padding: 26px 24px;
  }

  .page-faq .fc-row {
    grid-template-columns: 108px minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
  }

  .page-faq .fc-copy {
    grid-column: 3;
    margin-top: 0;
  }

  .page-faq .copy-status {
    grid-column: 2 / -1;
  }
}

/* ---------- 桌面：左轨 + 右折页 ---------- */
@media (min-width: 1024px) {
  .page-faq {
    padding-bottom: 112px;
  }

  .page-faq .faq-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 56px;
    margin-top: 72px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 30px;
  }

  .page-faq .faq-rail ul {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-faq .rail-link {
    width: 100%;
    border: 0;
    border-bottom: 1px solid var(--faq-hair);
  }

  .page-faq .faq-rail li:last-child .rail-link {
    border-bottom: 0;
  }

  .page-faq .qa summary {
    padding: 18px 22px;
    font-size: 16px;
  }

  .page-faq .qa-a {
    padding: 0 22px 22px 50px;
  }

  .page-faq .quick-card {
    padding: 30px 24px 24px 40px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-card,
  .page-faq .fc-copy,
  .page-faq .archive-figure img,
  .page-faq .qa summary {
    transition: none;
  }

  .page-faq .quick-card:hover {
    transform: none;
  }

  .page-faq .fc-copy:hover {
    transform: none;
  }
}
<<<END>>>