.page-faq {
  --faq-green-soft: rgba(57, 255, 20, 0.16);
  --faq-fire-soft: rgba(255, 77, 0, 0.16);
  --faq-gold-soft: rgba(255, 215, 0, 0.14);
  --faq-diag-line: rgba(57, 255, 20, 0.06);
  background: var(--color-bg);
  color: var(--color-text);
}

.page-faq .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.page-faq .breadcrumb {
  margin-bottom: 22px;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

.page-faq p {
  line-height: 1.7;
}

/* ===== 首屏 Hero ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-top: 32px;
  padding-bottom: 48px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    115deg,
    transparent 0,
    transparent 42px,
    var(--faq-diag-line) 42px,
    var(--faq-diag-line) 46px,
    transparent 46px,
    transparent 88px
  );
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(255, 77, 0, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 2;
}

.page-faq .faq-kicker {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

.page-faq .faq-hero-lead {
  margin: 0 0 4px;
  max-width: 58ch;
  color: var(--color-text-dim);
  font-size: 16px;
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}

.page-faq .faq-hero-media {
  position: relative;
  max-width: 420px;
  padding: 8px;
  background: linear-gradient(135deg, rgba(57, 255, 20, 0.5), rgba(255, 77, 0, 0.5));
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

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

/* ===== 搜索框 ===== */
.page-faq .faq-search-block {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0 8px;
  max-width: 560px;
  padding: 5px 14px 5px 12px;
  background: var(--color-bg-card);
  border: 1px solid rgba(57, 255, 20, 0.35);
  transition: border-color var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
}

.page-faq .faq-search-block:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.14);
}

.page-faq .faq-search-svg {
  flex: 0 0 auto;
  color: var(--color-accent);
}

.page-faq .faq-search-input {
  flex: 1 1 auto;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  padding: 9px 0;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--color-text);
}

.page-faq .faq-search-input::placeholder {
  color: var(--color-text-dim);
  opacity: 1;
}

.page-faq .faq-search-meta {
  margin: 0 0 6px;
  max-width: 560px;
  color: var(--color-text-dim);
  font-size: 13px;
}

.page-faq .faq-hero-hottags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
}

.page-faq .faq-hot-label {
  margin-right: 2px;
  color: var(--color-text-dim);
  font-size: 13px;
}

.page-faq .faq-hot-tag {
  padding: 6px 11px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 13px;
  text-decoration: none;
  transition: border-color var(--fast) var(--ease), color var(--fast) var(--ease);
}

.page-faq .faq-hot-tag:hover,
.page-faq .faq-hot-tag:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ===== 导航索引 ===== */
.page-faq .faq-index-section,
.page-faq .faq-main-section,
.page-faq .faq-support-section {
  position: relative;
}

.page-faq .faq-section-head {
  margin-bottom: 28px;
  max-width: 660px;
}

.page-faq .faq-section-head h2 {
  margin: 8px 0;
  font-size: clamp(24px, 3vw, 32px);
  color: var(--color-text);
}

.page-faq .faq-section-head .section-desc {
  color: var(--color-text-dim);
  font-size: 15px;
}

.page-faq .faq-index-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-faq .faq-index-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 18px 18px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  text-decoration: none;
  color: var(--color-text);
  transition: transform var(--med) var(--ease), border-color var(--med) var(--ease), box-shadow var(--med) var(--ease), background var(--med) var(--ease);
}

.page-faq .faq-index-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35);
}

.page-faq .faq-index-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

.page-faq .faq-index-card:last-child {
  grid-column: span 2;
}

.page-faq .faq-index-num {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-text-dim);
}

.page-faq .faq-index-name {
  font-family: var(--font-heading);
  font-size: 20px;
  line-height: 1.2;
}

.page-faq .faq-index-desc {
  font-size: 13px;
  color: var(--color-text-dim);
  line-height: 1.5;
}

.page-faq .faq-index-card.is-green {
  border-color: rgba(57, 255, 20, 0.35);
  background: linear-gradient(145deg, rgba(57, 255, 20, 0.1), var(--color-bg-card) 60%);
}

.page-faq .faq-index-card.is-green .faq-index-num {
  color: var(--color-accent);
}

.page-faq .faq-index-card.is-fire {
  border-color: rgba(255, 77, 0, 0.4);
  background: linear-gradient(145deg, rgba(255, 77, 0, 0.1), var(--color-bg-card) 60%);
}

.page-faq .faq-index-card.is-fire .faq-index-num {
  color: var(--color-accent-fire);
}

.page-faq .faq-index-card.is-gold {
  border-color: rgba(255, 215, 0, 0.32);
  background: linear-gradient(145deg, rgba(255, 215, 0, 0.08), var(--color-bg-card) 58%);
}

.page-faq .faq-index-card.is-gold .faq-index-num {
  color: var(--color-gold);
}

.page-faq .faq-index-card.is-ghost {
  border-color: var(--color-border);
}

.page-faq .faq-index-card.is-ghost .faq-index-num {
  color: var(--color-accent);
}

.page-faq .faq-index-card.is-line {
  background: var(--color-bg-card);
}

.page-faq .faq-index-card.is-line .faq-index-num {
  color: var(--color-accent-fire);
}

/* ===== 主手风琴区域 ===== */
.page-faq .faq-main-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-faq .faq-category-block {
  margin-bottom: 38px;
}

.page-faq .faq-cat-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-size: 20px;
  color: var(--color-text);
}

.page-faq .faq-cat-index {
  flex: 0 0 auto;
  padding: 3px 8px 2px;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-accent);
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid rgba(57, 255, 20, 0.3);
}

.page-faq .faq-item {
  margin-bottom: 10px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-border);
  transition: border-color var(--med) var(--ease), box-shadow var(--med) var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--color-accent);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  line-height: 1.45;
}

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

.page-faq .faq-item summary:hover {
  background: rgba(57, 255, 20, 0.04);
}

.page-faq .faq-q-icon {
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(57, 255, 20, 0.35);
  background: rgba(57, 255, 20, 0.1);
  border-radius: 50%;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-accent);
}

.page-faq .faq-q-text {
  flex: 1 1 auto;
}

.page-faq .faq-q-mark {
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-text-dim);
  transition: transform var(--med) var(--ease), color var(--med) var(--ease);
}

.page-faq .faq-item[open] .faq-q-mark {
  transform: rotate(45deg);
  color: var(--color-accent-fire);
}

.page-faq .faq-a {
  padding: 0 18px 18px 64px;
  color: var(--color-text-dim);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-a p {
  margin: 0 0 8px;
}

.page-faq .faq-media-inline {
  display: block;
  width: calc(100% - 44px);
  max-width: 500px;
  height: auto;
  margin: 14px 0 6px 44px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

/* ===== 右侧快捷索引 ===== */
.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail-panel,
.page-faq .faq-rail-note {
  margin-bottom: 16px;
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.page-faq .faq-rail-title {
  margin: 0 0 14px;
  font-size: 18px;
  color: var(--color-accent);
}

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

.page-faq .faq-rail-list li + li {
  border-top: 1px solid var(--color-border);
}

.page-faq .faq-rail-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 0;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--fast) var(--ease);
}

.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  color: var(--color-accent);
}

.page-faq .faq-rail-list a span {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--color-text-dim);
}

.page-faq .faq-rail-note-title {
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--color-accent-fire);
}

.page-faq .faq-rail-note p {
  margin: 10px 0 16px;
  color: var(--color-text-dim);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-rail-note .btn {
  margin: 0 8px 8px 0;
}

/* ===== 联系支持 ===== */
.page-faq .faq-support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 36px 26px;
  background:
    linear-gradient(135deg, rgba(57, 255, 20, 0.08), transparent 45%),
    var(--color-bg-card);
  border: 1px solid rgba(57, 255, 20, 0.35);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-faq .faq-support-copy h2 {
  margin: 8px 0 12px;
  font-size: clamp(22px, 3vw, 30px);
  color: var(--color-text);
}

.page-faq .faq-support-copy p {
  max-width: 54ch;
  color: var(--color-text-dim);
}

.page-faq .faq-support-contact {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-support-contact li {
  display: flex;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 15px;
}

.page-faq .faq-support-contact li:last-child {
  border-bottom: 0;
}

.page-faq .faq-support-contact li span {
  flex: 0 0 48px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

.page-faq .faq-support-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 200px;
}

.page-faq .faq-support-actions .btn {
  justify-content: center;
}

/* ===== 桌面端断点 ===== */
@media (min-width: 640px) {
  .page-faq .faq-media-inline {
    margin-left: 58px;
    width: calc(100% - 58px);
  }
}

@media (min-width: 760px) {
  .page-faq .faq-index-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-index-card:nth-child(1),
  .page-faq .faq-index-card:nth-child(2) {
    grid-column: span 3;
  }

  .page-faq .faq-index-card:nth-child(3) {
    grid-column: span 2;
  }

  .page-faq .faq-index-card:nth-child(4),
  .page-faq .faq-index-card:nth-child(5) {
    grid-column: span 2;
  }

  .page-faq .faq-index-card:last-child {
    grid-column: span 2;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero {
    padding-top: 40px;
    padding-bottom: 56px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1fr) 400px;
    gap: 48px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-main-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 16px);
  }
}

@media (min-width: 920px) {
  .page-faq .faq-support-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 46px 44px;
  }
}