.page-faq {
  --faq-t1: #FBF6EA;
  --faq-t2: #EFF5F1;
  --faq-t3: #F4EADB;
  --faq-t4: #E5EFE9;
}

/* 焦点可见性 */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* 首屏 */
.page-faq .faq-hero {
  padding: clamp(88px, 12vw, 150px) 0 clamp(34px, 5vw, 60px);
  background-image: radial-gradient(rgba(23, 17, 15, 0.075) 1px, transparent 1.4px);
  background-size: 16px 16px;
}

.page-faq .faq-hero-grid {
  align-items: start;
  row-gap: clamp(24px, 4vw, 40px);
}

.page-faq .faq-hero-main,
.page-faq .faq-hero-side {
  min-width: 0;
}

.page-faq .faq-title {
  margin: 14px 0 18px;
}

.page-faq .faq-hero-main .lede {
  max-width: 44ch;
  margin: 0;
}

.page-faq .faq-meta {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-meta li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--muted);
}

.page-faq .faq-index {
  padding: clamp(20px, 3vw, 28px);
}

.page-faq .faq-index-label {
  margin: 0 0 12px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--gold-light);
}

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

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0;
  color: #FFFFFF;
  text-decoration: none;
  font-size: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.26);
  transition: color 0.28s var(--ease);
}

.page-faq .faq-index-list li:last-child a {
  border-bottom: 0;
}

.page-faq .faq-index-list a:hover {
  color: var(--gold-light);
}

.page-faq .faq-index-num {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--gold-light);
}

.page-faq .faq-index-back {
  display: inline-block;
  margin-top: 16px;
}

/* 高频三问 */
.page-faq .faq-hot {
  padding: clamp(30px, 5vw, 54px) 0 clamp(18px, 3vw, 30px);
}

.page-faq .faq-hot-grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .faq-hot-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 20px 20px;
  background: var(--paper);
  border: var(--stroke) solid var(--ink);
  box-shadow: 6px 6px 0 var(--red-deep);
}

.page-faq .faq-hot-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--gold);
}

.page-faq .faq-hot-card:nth-child(2)::before {
  background: var(--red);
}

.page-faq .faq-hot-card:nth-child(3)::before {
  background: var(--jade);
}

.page-faq .faq-hot-q {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.55;
}

.page-faq .faq-hot-a {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hot-link {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--jade);
  text-decoration: none;
  border-bottom: 2px solid var(--jade);
}

.page-faq .faq-hot-link:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

/* 五步教程 */
.page-faq .faq-steps {
  padding: clamp(36px, 6vw, 74px) 0;
}

.page-faq .figure-frame {
  margin: clamp(20px, 3vw, 34px) 0 clamp(28px, 4vw, 46px);
}

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

.page-faq .step-item {
  display: grid;
  gap: 16px;
  padding: clamp(26px, 4vw, 42px) 0;
  border-top: var(--stroke) solid var(--ink);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .step-item:last-child {
  border-bottom: var(--stroke) solid var(--ink);
}

.page-faq .step-num {
  display: inline-grid;
  place-items: center;
  justify-self: start;
  padding: 10px 18px;
  background: var(--gold-light);
  border: var(--stroke) solid var(--ink);
  box-shadow: var(--sh-3);
}

.page-faq .step-num .num-figure {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1;
}

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

.page-faq .step-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 3vw, 2rem);
  letter-spacing: -0.01em;
}

.page-faq .step-lead {
  margin: 0 0 12px;
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.75;
}

.page-faq .step-points {
  margin: 0;
  padding: 0;
  font-size: 0.96rem;
  color: var(--muted);
}

/* 六类问题 */
.page-faq .faq-groups {
  padding: clamp(36px, 6vw, 74px) 0;
  background: linear-gradient(180deg, transparent, var(--faq-t2) 14%, var(--faq-t2) 86%, transparent);
}

.page-faq .q-groups {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
}

.page-faq .q-group {
  padding: clamp(18px, 3vw, 28px);
  background: var(--q-bg, var(--faq-t1));
  border: var(--stroke) solid var(--ink);
  box-shadow: var(--sh-3);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .q-group--a { --q-bg: #FBF6EA; }
.page-faq .q-group--b { --q-bg: #EDF5F1; }
.page-faq .q-group--c { --q-bg: #F4EADB; }
.page-faq .q-group--d { --q-bg: #E7F0EB; }
.page-faq .q-group--e { --q-bg: #FAF2E4; }
.page-faq .q-group--f { --q-bg: #EFF5F0; }

.page-faq .q-group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 12px;
  padding-bottom: 12px;
  border-bottom: var(--stroke) solid var(--ink);
}

.page-faq .q-group-num {
  display: inline-grid;
  place-items: center;
  min-width: 40px;
  height: 32px;
  padding: 0 8px;
  background: var(--red);
  color: #FFFFFF;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.04em;
}

.page-faq .q-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
}

.page-faq .q-item {
  border-top: 1px dashed var(--line);
}

.page-faq .q-item:first-of-type {
  border-top: 0;
}

.page-faq .q-summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 6px 12px 12px;
  border-left: 4px solid var(--gold);
  cursor: pointer;
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.65;
  transition: border-color 0.28s var(--ease), color 0.28s var(--ease);
}

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

.page-faq .q-summary::after {
  content: "+";
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--gold);
  transition: color 0.28s var(--ease);
}

.page-faq .q-item[open] > .q-summary {
  border-left-color: var(--jade);
}

.page-faq .q-item[open] > .q-summary::after {
  content: "−";
  color: var(--jade);
}

.page-faq .q-summary:hover {
  border-left-color: var(--red);
}

.page-faq .q-answer {
  margin: 0 0 14px 16px;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--muted);
}

/* 联系路径 */
.page-faq .faq-help {
  padding: clamp(36px, 6vw, 74px) 0;
}

.page-faq .faq-help-panel {
  padding: clamp(22px, 4vw, 42px);
}

.page-faq .faq-contact-list {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
}

.page-faq .faq-contact-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--jade);
}

.page-faq .faq-contact-value {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  word-break: break-all;
}

/* 修订同步 */
.page-faq .faq-revision {
  padding: clamp(36px, 6vw, 74px) 0 clamp(48px, 8vw, 96px);
}

.page-faq .faq-revision-grid {
  align-items: start;
  row-gap: clamp(24px, 4vw, 32px);
}

.page-faq .faq-links {
  list-style: none;
  margin: 0 0 clamp(18px, 3vw, 26px);
  padding: 0;
}

.page-faq .faq-links a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 0;
  color: var(--ink);
  font-size: 0.98rem;
  text-decoration: none;
  border-bottom: 1px dashed var(--line);
  transition: color 0.28s var(--ease);
}

.page-faq .faq-links a::after {
  content: "→";
  font-family: var(--font-num);
  font-weight: 800;
  color: var(--red);
}

.page-faq .faq-links a:hover {
  color: var(--red);
}

/* 窄屏微调 */
@media (max-width: 520px) {
  .page-faq .faq-title {
    font-size: clamp(2.1rem, 10vw, 3rem);
  }

  .page-faq .step-num {
    padding: 8px 14px;
  }

  .page-faq .q-group-num {
    min-width: 34px;
    height: 28px;
    font-size: 0.9rem;
  }
}

/* 桌面错位与慢读节奏 */
@media (min-width: 780px) {
  .page-faq .faq-hot-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .step-item {
    grid-template-columns: minmax(150px, 210px) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 64px);
    min-height: 48vh;
    align-items: center;
  }

  .page-faq .step-num {
    justify-self: start;
  }

  .page-faq .q-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 4vw, 60px);
  }

  .page-faq .q-group:nth-child(even) {
    margin-block-start: clamp(36px, 4vw, 64px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-list a,
  .page-faq .faq-hot-link,
  .page-faq .q-summary,
  .page-faq .q-summary::after,
  .page-faq .faq-links a {
    transition: none;
  }
}