.page-faq {
  --faq-gap: 32px;
  --faq-card-line: 1px solid var(--line);
  --faq-cyan-soft: rgba(47, 243, 208, 0.12);
  --faq-cyan-line: rgba(47, 243, 208, 0.35);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 36px 0 52px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 340px;
  background:
    radial-gradient(58% 100% at 18% 0%, rgba(47, 243, 208, 0.13), transparent 68%),
    radial-gradient(52% 100% at 82% 0%, rgba(76, 141, 255, 0.11), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(30px, 6.6vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin: 20px 0 0;
  max-width: 64ch;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.8;
}

/* 首屏数据带 */
.page-faq .faq-hero__stats {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: var(--faq-card-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-hero__stats .stat {
  background: var(--ink-900);
  padding: 18px 16px;
}

.page-faq .faq-hero__stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1.1;
  color: var(--text);
}

.page-faq .faq-hero__stats .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-3);
}

/* 快速定位标签 */
.page-faq .faq-jump {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-faq .faq-jump__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-3);
  text-transform: uppercase;
}

.page-faq .faq-jump__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump__list a {
  display: inline-block;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-jump__list a:hover,
.page-faq .faq-jump__list a:focus-visible {
  color: var(--ink-950);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding-top: 56px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

/* 左侧索引树 */
.page-faq .faq-index__inner {
  border-left: 1px solid var(--line);
  padding-left: 0;
}

.page-faq .faq-index__label {
  margin: 0 0 12px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-3);
  text-transform: uppercase;
}

.page-faq .faq-index__list,
.page-faq .faq-index__sub {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__item {
  position: relative;
}

.page-faq .faq-index__link {
  display: block;
  padding: 9px 12px 9px 16px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.45;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
  border-left-color: var(--cyan);
  background: var(--faq-cyan-soft);
}

.page-faq .faq-index__item.is-active > .faq-index__link {
  color: var(--cyan);
  border-left-color: var(--cyan);
}

.page-faq .faq-index__sub {
  padding: 2px 0 8px 22px;
}

.page-faq .faq-index__sub li {
  position: relative;
  padding-left: 14px;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--text-3);
}

.page-faq .faq-index__sub li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.98em;
  width: 8px;
  height: 1px;
  background: var(--line);
}

/* ---------- 区块通用 ---------- */
.page-faq .faq-block {
  margin-bottom: 76px;
  scroll-margin-top: 120px;
}

.page-faq .faq-block:last-child {
  margin-bottom: 0;
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--cyan);
  flex: none;
}

.page-faq .faq-block h2 {
  margin: 0;
  font-size: clamp(20px, 3.4vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-faq .faq-block > p {
  margin: 0 0 14px;
  max-width: 70ch;
  color: var(--text-2);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-block > p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-cyan-line);
}

.page-faq .faq-block > p a:hover,
.page-faq .faq-block > p a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 图片 ---------- */
.page-faq .figure {
  margin: 26px 0;
  border: var(--faq-card-line);
  border-radius: var(--radius);
  background: var(--ink-900);
  overflow: hidden;
}

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

.page-faq .figure__caption {
  padding: 10px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-3);
}

/* ---------- 三级分类 ---------- */
.page-faq .faq-tri {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 24px 0 0;
  background: var(--line);
  border: var(--faq-card-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-tri__cell {
  background: var(--ink-900);
  padding: 20px 18px;
}

.page-faq .faq-tri__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-tri__title {
  margin: 10px 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-tri__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-3);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  margin-top: 6px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-list details {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-list summary {
  position: relative;
  display: block;
  padding: 18px 40px 18px 0;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-list summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 18px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-list summary:hover,
.page-faq .faq-list summary:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-list details[open] > summary {
  color: var(--cyan);
}

.page-faq .faq-list details[open] > summary::after {
  content: "\2013";
}

.page-faq .faq-list__body {
  padding: 0 40px 20px 0;
  max-width: 74ch;
}

.page-faq .faq-list__body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-2);
}

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

/* ---------- 字段卡片 ---------- */
.page-faq .field-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-faq .field-card {
  padding: 16px 18px;
  background: var(--panel-800);
  border: var(--faq-card-line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius);
}

.page-faq .field-card__code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .field-card__name {
  display: block;
  margin: 8px 0 7px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-faq .field-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--text-3);
}

/* ---------- 两栏紧凑问答卡 ---------- */
.page-faq .faq-grid2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.page-faq .faq-note {
  padding: 18px;
  background: var(--ink-900);
  border: var(--faq-card-line);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-note:hover {
  border-color: var(--faq-cyan-line);
}

.page-faq .faq-note__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 9px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-faq .faq-note__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--blue);
}

.page-faq .faq-note p {
  margin: 0;
  max-width: none;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--text-3);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-help {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 24px;
  padding: 26px 22px;
  border: var(--faq-card-line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 160% at 0% 0%, var(--faq-cyan-soft), transparent 62%),
    var(--ink-900);
}

.page-faq .faq-help__text h3 {
  margin: 0 0 10px;
  font-size: 18px;
  color: var(--text);
}

.page-faq .faq-help__text p {
  margin: 0 0 18px;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-2);
}

.page-faq .faq-contact {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
  align-content: start;
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 4px 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact__label {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-3);
}

.page-faq .faq-contact__value {
  min-width: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-contact__value a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-cyan-line);
}

.page-faq .faq-contact__copy {
  flex: none;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-contact__copy:hover,
.page-faq .faq-contact__copy:focus-visible {
  color: var(--ink-950);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-tri {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-grid2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
    align-items: start;
    padding: 30px 28px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 48px 0 64px;
  }

  .page-faq .faq-body {
    padding-top: 72px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-block {
    margin-bottom: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-jump__list a,
  .page-faq .faq-list summary,
  .page-faq .faq-note,
  .page-faq .faq-contact__copy {
    transition: none;
  }
}