/* ===== 支持中心 · FAQ ===== */
.page-faq {
  --faq-red: #E30613;
  --faq-green: #00A651;
  --faq-gold: #FFD700;
  --faq-line: #333340;
  --faq-surface: #14141A;
  padding-bottom: 72px;
  overflow-x: hidden;
}

.page-faq #faq-categories,
.page-faq #faq-hot,
.page-faq #faq-contact {
  scroll-margin-top: calc(var(--header-height) + 16px);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 16px;
  padding-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--line-color);
}

.page-faq .faq-crumbs a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .faq-crumbs a:hover {
  color: var(--faq-green);
}

.page-faq .faq-crumbs__sep {
  color: var(--faq-red);
  font-weight: 700;
}

.page-faq .faq-crumbs__current {
  color: var(--text-primary);
}

/* ---------- 页头 ---------- */
.page-faq .faq-heading {
  position: relative;
  padding-top: 40px;
  padding-bottom: 40px;
  overflow: hidden;
}

.page-faq .faq-heading::before {
  content: "";
  position: absolute;
  top: 24px;
  right: -40px;
  width: 200px;
  height: 200px;
  background:
    linear-gradient(135deg, transparent 48%, rgba(0, 166, 81, 0.14) 49%, rgba(0, 166, 81, 0.14) 51%, transparent 52%),
    linear-gradient(45deg, transparent 48%, rgba(227, 6, 19, 0.12) 49%, rgba(227, 6, 19, 0.12) 51%, transparent 52%);
  background-size: 24px 24px;
  clip-path: polygon(20% 0, 100% 0, 100% 80%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-heading h1 {
  font-family: var(--font-headline);
  font-size: var(--h1-size);
  line-height: 1.12;
  letter-spacing: 0.02em;
  margin: 14px 0 18px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-heading h1 em {
  font-style: normal;
  color: var(--faq-green);
  position: relative;
}

.page-faq .faq-heading h1 em::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 4px;
  background: var(--faq-red);
  clip-path: polygon(0 0, 100% 0, 96% 100%, 0 100%);
}

.page-faq .faq-heading__lead {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 0 20px;
}

.page-faq .faq-heading__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.page-faq .faq-heading__meta span {
  padding: 6px 10px;
  border: 1px solid var(--line-color);
  border-left: 3px solid var(--faq-red);
  background: rgba(20, 20, 26, 0.6);
}

/* ---------- 快速分类卡片 ---------- */
.page-faq .faq-quick {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding-bottom: 36px;
}

.page-faq .faq-quick__card {
  position: relative;
  display: block;
  text-decoration: none;
  border: 1px solid var(--line-color);
  border-top: 3px solid var(--line-color);
  background: var(--faq-surface);
  padding: 18px 16px 16px;
  transition: border-color 0.2s ease, transform 0.2s ease;
  overflow: hidden;
}

.page-faq .faq-quick__card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 28px 28px 0;
  border-color: transparent var(--faq-line) transparent transparent;
  transition: border-color 0.2s ease;
}

.page-faq .faq-quick__card:hover {
  transform: translateY(-2px);
  border-color: var(--text-secondary);
}

.page-faq .faq-quick__card--account { border-top-color: var(--faq-green); }
.page-faq .faq-quick__card--data { border-top-color: var(--faq-red); }
.page-faq .faq-quick__card--access { border-top-color: var(--faq-gold); }
.page-faq .faq-quick__card--copyright { border-top-color: var(--text-primary); }

.page-faq .faq-quick__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--faq-red);
  margin-bottom: 10px;
}

.page-faq .faq-quick__card--account .faq-quick__no { color: var(--faq-green); }
.page-faq .faq-quick__card--data .faq-quick__no { color: var(--faq-red); }
.page-faq .faq-quick__card--access .faq-quick__no { color: var(--faq-gold); }
.page-faq .faq-quick__card--copyright .faq-quick__no { color: var(--text-primary); }

.page-faq .faq-quick__name {
  display: block;
  font-family: var(--font-headline);
  font-size: 16px;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

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

/* ---------- 分类标签页 ---------- */
.page-faq .faq-categories {
  padding-top: 8px;
  padding-bottom: 56px;
}

.page-faq .faq-cat-head {
  margin-bottom: 20px;
}

.page-faq .faq-tab-input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.page-faq .faq-tabbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line-color);
  padding-bottom: 12px;
}

.page-faq .faq-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-headline);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  border: 1px solid var(--line-color);
  background: transparent;
  padding: 10px 16px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  user-select: none;
}

.page-faq .faq-tab__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faq-red);
}

.page-faq .faq-tab:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

.page-faq #tab-account:focus-visible ~ .faq-tabbar label[for="tab-account"],
.page-faq #tab-data:focus-visible ~ .faq-tabbar label[for="tab-data"],
.page-faq #tab-access:focus-visible ~ .faq-tabbar label[for="tab-access"],
.page-faq #tab-copyright:focus-visible ~ .faq-tabbar label[for="tab-copyright"] {
  outline: 2px solid var(--faq-green);
  outline-offset: 2px;
}

.page-faq #tab-account:checked ~ .faq-tabbar label[for="tab-account"],
.page-faq #tab-data:checked ~ .faq-tabbar label[for="tab-data"],
.page-faq #tab-access:checked ~ .faq-tabbar label[for="tab-access"],
.page-faq #tab-copyright:checked ~ .faq-tabbar label[for="tab-copyright"] {
  background: var(--faq-green);
  border-color: var(--faq-green);
  color: #fff;
}

.page-faq #tab-data:checked ~ .faq-tabbar label[for="tab-data"] {
  background: var(--faq-red);
  border-color: var(--faq-red);
}

.page-faq #tab-access:checked ~ .faq-tabbar label[for="tab-access"] {
  background: var(--faq-gold);
  border-color: var(--faq-gold);
  color: #14141A;
}

.page-faq #tab-copyright:checked ~ .faq-tabbar label[for="tab-copyright"] {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: #0A0A0F;
}

.page-faq #tab-account:checked ~ .faq-tabbar label[for="tab-account"] .faq-tab__idx,
.page-faq #tab-data:checked ~ .faq-tabbar label[for="tab-data"] .faq-tab__idx,
.page-faq #tab-access:checked ~ .faq-tabbar label[for="tab-access"] .faq-tab__idx,
.page-faq #tab-copyright:checked ~ .faq-tabbar label[for="tab-copyright"] .faq-tab__idx {
  color: inherit;
}

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

.page-faq .faq-panel {
  display: none;
}

.page-faq #tab-account:checked ~ .faq-panels .faq-panel--account,
.page-faq #tab-data:checked ~ .faq-panels .faq-panel--data,
.page-faq #tab-access:checked ~ .faq-panels .faq-panel--access,
.page-faq #tab-copyright:checked ~ .faq-panels .faq-panel--copyright {
  display: block;
  animation: faqFadeIn 0.25s ease;
}

@keyframes faqFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--line-color);
  border-left: 3px solid var(--line-color);
  background: var(--faq-surface);
  margin-bottom: 12px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--faq-green);
  background: rgba(0, 166, 81, 0.04);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
}

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

.page-faq .faq-item__q:focus-visible,
.page-faq .faq-hot-details__q:focus-visible {
  outline: 2px solid var(--faq-red);
  outline-offset: -2px;
}

.page-faq .faq-item__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--faq-red);
  flex-shrink: 0;
  min-width: 34px;
}

.page-faq .faq-item__text {
  flex: 1;
}

.page-faq .faq-item__icon {
  position: relative;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  border: 1px solid var(--text-secondary);
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--text-secondary);
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-faq .faq-item__icon::before {
  top: 8px;
  left: 4px;
  right: 4px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  left: 8px;
  top: 4px;
  bottom: 4px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: scaleY(0);
}

.page-faq .faq-item[open] .faq-item__icon {
  border-color: var(--faq-green);
}

.page-faq .faq-item[open] .faq-item__icon::before {
  background: var(--faq-green);
}

.page-faq .faq-item__a {
  padding: 14px 16px 18px 60px;
  border-top: 1px dashed var(--line-color);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ---------- 数据面板布局 ---------- */
.page-faq .faq-data-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-faq .faq-data-fig {
  margin: 0;
  border: 1px solid var(--line-color);
  padding: 8px;
  background: var(--faq-surface);
}

.page-faq .faq-data-fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 300px;
  margin: 0 auto;
}

.page-faq .faq-data-fig figcaption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  text-align: center;
  padding: 10px 0 4px;
}

/* ---------- 热门问题 ---------- */
.page-faq .faq-hot {
  background: var(--faq-surface);
  border-top: 1px solid var(--line-color);
  border-bottom: 1px solid var(--line-color);
  padding: 40px 0 48px;
  position: relative;
}

.page-faq .faq-hot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--faq-green) 0%, var(--faq-red) 60%, var(--faq-gold) 100%);
}

.page-faq .faq-hot__head {
  margin-bottom: 24px;
}

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

.page-faq .faq-hot-item {
  margin-bottom: 10px;
}

.page-faq .faq-hot-details {
  border: 1px solid var(--line-color);
  background: var(--bg-dark);
  transition: border-color 0.2s ease;
}

.page-faq .faq-hot-details[open] {
  border-color: rgba(227, 6, 19, 0.6);
}

.page-faq .faq-hot-details__q {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
}

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

.page-faq .faq-hot-details__no {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--faq-red);
  flex-shrink: 0;
  min-width: 40px;
  text-align: right;
}

.page-faq .faq-hot-item:nth-child(-n+3) .faq-hot-details__no {
  color: var(--faq-gold);
}

.page-faq .faq-hot-details__text {
  flex: 1;
}

.page-faq .faq-hot-details__icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  border: 1px solid var(--text-secondary);
  opacity: 0.6;
}

.page-faq .faq-hot-details__icon::before,
.page-faq .faq-hot-details__icon::after {
  content: "";
  position: absolute;
  background: var(--text-secondary);
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-faq .faq-hot-details__icon::before {
  top: 7px;
  left: 3px;
  right: 3px;
  height: 2px;
}

.page-faq .faq-hot-details__icon::after {
  left: 7px;
  top: 3px;
  bottom: 3px;
  width: 2px;
}

.page-faq .faq-hot-details[open] .faq-hot-details__icon::after {
  transform: scaleY(0);
}

.page-faq .faq-hot-details[open] .faq-hot-details__icon {
  border-color: var(--faq-red);
  opacity: 1;
}

.page-faq .faq-hot-details[open] .faq-hot-details__icon::before {
  background: var(--faq-red);
}

.page-faq .faq-hot-details__a {
  padding: 14px 16px 18px 72px;
  border-top: 1px dashed var(--line-color);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact {
  padding-top: 8px;
}

.page-faq .faq-speedline {
  opacity: 0.85;
}

.page-faq .faq-contact__head {
  margin: 32px 0 24px;
  padding-top: 8px;
}

.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-faq .faq-contact__methods {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-contact-card {
  border: 1px solid var(--line-color);
  border-left: 4px solid var(--faq-green);
  background: var(--faq-surface);
  padding: 16px 16px 14px;
}

.page-faq .faq-contact-card:nth-child(2) {
  border-left-color: var(--faq-red);
}

.page-faq .faq-contact-card:nth-child(3) {
  border-left-color: var(--faq-gold);
}

.page-faq .faq-contact-card__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--faq-gold);
  margin-bottom: 8px;
}

.page-faq .faq-contact-card__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  word-break: break-all;
}

.page-faq .faq-contact-card__note {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 6px;
}

.page-faq .faq-contact__fig {
  margin: 0;
  border: 1px solid var(--line-color);
  background: var(--faq-surface);
  padding: 8px;
}

.page-faq .faq-contact__fig img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-contact__fig figcaption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  text-align: center;
  padding: 10px 0 4px;
}

/* ---------- 工单指引 ---------- */
.page-faq .faq-contact__steps {
  margin-top: 32px;
  border: 1px solid var(--line-color);
  background: var(--faq-surface);
  padding: 20px 16px;
}

.page-faq .faq-steps-title {
  font-family: var(--font-headline);
  font-size: 18px;
  margin: 0 0 16px;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-faq .faq-steps-title::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--faq-red);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-steps__item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}

.page-faq .faq-steps__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--faq-red);
  background: rgba(227, 6, 19, 0.08);
  border: 1px solid var(--line-color);
  padding: 4px 8px;
  flex-shrink: 0;
}

.page-faq .faq-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 平板 / 桌面 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-quick {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 768px) {
  .page-faq .faq-heading {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .page-faq .faq-heading__lead {
    font-size: 16px;
  }

  .page-faq .faq-quick__card {
    padding: 22px 20px 18px;
  }

  .page-faq .faq-quick__no {
    font-size: 34px;
  }

  .page-faq .faq-tabbar {
    flex-wrap: nowrap;
    gap: 0;
    border-bottom: 2px solid var(--line-color);
    padding-bottom: 0;
  }

  .page-faq .faq-tab {
    border: none;
    background: transparent;
    border-bottom: 4px solid transparent;
    padding: 14px 22px;
    margin-bottom: -2px;
    color: var(--text-secondary);
  }

  .page-faq .faq-tab:hover {
    color: var(--text-primary);
    border-bottom-color: var(--line-color);
    background: transparent;
  }

  .page-faq #tab-account:checked ~ .faq-tabbar label[for="tab-account"],
  .page-faq #tab-data:checked ~ .faq-tabbar label[for="tab-data"],
  .page-faq #tab-access:checked ~ .faq-tabbar label[for="tab-access"],
  .page-faq #tab-copyright:checked ~ .faq-tabbar label[for="tab-copyright"] {
    background: transparent;
    border-bottom-color: var(--faq-green);
    color: var(--faq-green);
  }

  .page-faq #tab-data:checked ~ .faq-tabbar label[for="tab-data"] {
    border-bottom-color: var(--faq-red);
    color: var(--faq-red);
  }

  .page-faq #tab-access:checked ~ .faq-tabbar label[for="tab-access"] {
    border-bottom-color: var(--faq-gold);
    color: var(--faq-gold);
  }

  .page-faq #tab-copyright:checked ~ .faq-tabbar label[for="tab-copyright"] {
    border-bottom-color: var(--text-primary);
    color: var(--text-primary);
  }

  .page-faq .faq-data-layout {
    grid-template-columns: 1fr 280px;
    align-items: start;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .page-faq .faq-contact__fig img {
    max-width: 400px;
    margin: 0 auto;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .page-faq .faq-steps__item {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-faq .faq-steps__no {
    margin-bottom: 4px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hot-list {
    column-count: 2;
    column-gap: 16px;
  }

  .page-faq .faq-hot-item {
    break-inside: avoid;
  }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-panel {
    animation: none;
  }

  .page-faq .faq-item,
  .page-faq .faq-quick__card,
  .page-faq .faq-tab,
  .page-faq .faq-hot-details {
    transition: none;
  }
}