.page-faq {
  --faq-dim: var(--silver);
  --faq-rule: var(--line);
  --faq-surface: var(--panel);
  --faq-read: 34em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(36px, 6vw, 72px) clamp(56px, 7vw, 96px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(36px, 5vw, 64px);
  align-items: start;
}

.page-faq .faq-hero__text {
  position: relative;
  padding-block-start: 8px;
}

.page-faq .faq-hero__title {
  margin: 18px 0 0;
  font-size: clamp(32px, 8.6vw, 58px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: var(--faq-read);
  font-size: 16px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 30px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--silver);
}

.page-faq .faq-hero__meta-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--turf);
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-hero__caption {
  padding: 14px 20px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--index);
}

/* ---------- 章节骨架 ---------- */
.page-faq .guide-block {
  padding-block: clamp(64px, 8.5vw, 118px);
  background: var(--bg);
  color: var(--paper);
  border-top: 1px solid var(--faq-rule);
}

.page-faq .guide-block--light {
  background: var(--light);
  color: var(--light-ink);
  --faq-dim: #4D6076;
  --faq-rule: rgba(16, 35, 58, 0.16);
  --faq-surface: #FFFFFF;
  border-top-color: rgba(16, 35, 58, 0.12);
}

.page-faq .guide-block--turf {
  background: var(--turf-deep);
  --faq-rule: rgba(242, 245, 248, 0.16);
  --faq-surface: rgba(10, 20, 40, 0.32);
}

.page-faq .guide-block__head {
  max-width: 46em;
  margin-bottom: clamp(38px, 5vw, 62px);
}

.page-faq .guide-block__index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .guide-block--light .guide-block__index {
  color: #C4470E;
}

.page-faq .guide-block--turf .guide-block__index {
  color: var(--turf);
}

.page-faq .guide-block__title {
  margin: 12px 0 0;
  font-size: clamp(26px, 6.2vw, 44px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-faq .guide-block__lead {
  margin: 18px 0 0;
  max-width: var(--faq-read);
  font-size: 16px;
  line-height: 1.75;
  color: var(--faq-dim);
}

.page-faq .guide-block__list {
  display: grid;
  gap: clamp(28px, 3.4vw, 44px);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--faq-rule);
  padding-top: clamp(22px, 2.6vw, 32px);
}

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--faq-rule);
  padding-bottom: clamp(22px, 2.6vw, 32px);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 6px;
  border-radius: var(--r-sm);
}

.page-faq .faq-item__num {
  flex: none;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--index);
}

.page-faq .guide-block--light .faq-item__num {
  color: #6D8199;
}

.page-faq .guide-block--turf .faq-item__num {
  color: var(--turf);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  font-family: var(--font-sans);
  font-size: clamp(20px, 4.4vw, 28px);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 8px;
  color: var(--faq-dim);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  border-radius: 2px;
  transition: transform 260ms ease, opacity 260ms ease;
}

.page-faq .faq-item__mark::before {
  width: 16px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 16px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-item__mark {
  color: var(--orange);
}

.page-faq .guide-block--light .faq-item[open] .faq-item__mark {
  color: #C4470E;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-item__a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 300ms ease;
}

.page-faq .faq-item[open] .faq-item__a {
  grid-template-rows: 1fr;
}

.page-faq .faq-item__a-inner {
  overflow: hidden;
}

.page-faq .faq-item__a-inner p {
  margin: 0;
  padding: 18px 0 0 34px;
  max-width: var(--faq-read);
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-dim);
}

.page-faq .faq-item__a-inner a {
  color: var(--turf);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .guide-block--light .faq-item__a-inner a {
  color: #186149;
}

/* ---------- 规则版本表 ---------- */
.page-faq .rule-grid {
  margin-bottom: clamp(34px, 4vw, 52px);
  overflow-x: auto;
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-lg);
  background: var(--panel);
}

.page-faq .rule-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-faq .rule-table__caption {
  padding: 18px 22px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--index);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .rule-table th,
.page-faq .rule-table td {
  padding: 15px 22px;
  text-align: left;
  border-bottom: 1px solid var(--faq-rule);
  vertical-align: middle;
}

.page-faq .rule-table thead th {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--index);
  background: rgba(30, 57, 96, 0.28);
}

.page-faq .rule-table tbody th {
  font-weight: 600;
  color: var(--paper);
}

.page-faq .rule-table tbody td {
  color: var(--silver);
}

.page-faq .rule-table tbody tr:last-child th,
.page-faq .rule-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .rule-table__num {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.page-faq .rule-table .is-current th,
.page-faq .rule-table .is-current td {
  background: rgba(255, 122, 47, 0.09);
}

.page-faq .rule-table .is-current tbody th,
.page-faq .rule-table .is-current th {
  color: var(--orange);
}

/* ---------- 纠错清单 ---------- */
.page-faq .fix-list {
  display: grid;
  gap: 0;
  margin: 0 0 clamp(38px, 5vw, 60px);
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .fix-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px 20px;
  padding: clamp(20px, 2.6vw, 30px) 0;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .fix-list__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: #C4470E;
  padding-top: 5px;
}

.page-faq .fix-list__title {
  margin: 0;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-faq .fix-list__item p {
  margin: 8px 0 0;
  max-width: var(--faq-read);
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-dim);
}

/* ---------- 全宽横幅 ---------- */
.page-faq .faq-band {
  position: relative;
  margin: 0;
  background: var(--bg);
}

.page-faq .faq-band img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

.page-faq .faq-band__caption {
  position: absolute;
  left: 50%;
  bottom: clamp(20px, 4vw, 40px);
  transform: translateX(-50%);
  width: min(var(--wrap), calc(100% - 2 * var(--gutter)));
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
}

/* ---------- 尾部 ---------- */
.page-faq .faq-tail {
  padding-block: clamp(56px, 7vw, 92px);
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.page-faq .faq-tail__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 22px;
}

.page-faq .faq-tail__text {
  margin: 0;
  max-width: var(--faq-read);
  font-size: 16px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .page-faq .faq-hero__media {
    margin-top: 18px;
  }

  .page-faq .faq-item__a-inner p {
    padding-left: 44px;
  }

  .page-faq .faq-tail__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-faq .faq-tail__text {
    max-width: 40em;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
  }

  .page-faq .guide-block__list {
    max-width: 62em;
  }

  .page-faq .faq-hero__media img {
    aspect-ratio: 4 / 3;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after {
    transition: none;
  }
}