/* ========== FAQ 页面专属样式 ========== */
.page-faq {
  --faq-accent-bg: rgba(255, 106, 0, 0.1);
  --faq-blue-bg: rgba(0, 212, 255, 0.1);
  --faq-soft-bg: rgba(255, 154, 60, 0.12);
}

/* ----- Hero ----- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(32px, 7vw, 72px) 0 clamp(40px, 7vw, 64px);
  background:
    linear-gradient(120deg, rgba(10, 30, 63, 0.88) 0%, rgba(10, 30, 63, 0.24) 48%, transparent 72%),
    linear-gradient(300deg, rgba(255, 106, 0, 0.16) 0%, transparent 42%),
    var(--bg-deep);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 62%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--blue) 65%, transparent 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 26px) 100%, 0 100%);
}
.page-faq .faq-hero .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: clamp(28px, 5vw, 48px);
  font-size: 0.875rem;
  color: var(--text-dim);
}
.page-faq .faq-hero .breadcrumb-link {
  color: var(--blue);
  text-decoration: none;
}
.page-faq .faq-hero .breadcrumb-link:hover {
  color: var(--text);
}
.page-faq .faq-hero .breadcrumb-current {
  color: var(--text);
  font-weight: 700;
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
}
.page-faq .faq-hero__content {
  max-width: 720px;
}
.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.page-faq .faq-hero__eyebrow::before {
  content: "";
  width: 18px;
  height: 3px;
  background: var(--accent);
  flex: none;
}
.page-faq .faq-hero h1 {
  font-size: var(--text-h1);
  line-height: 1.15;
  margin: 0 0 16px;
  color: var(--text);
}
.page-faq .faq-hero__lead {
  color: var(--text-dim);
  font-size: 1.0625rem;
  line-height: 1.7;
  margin: 0;
}
.page-faq .faq-search {
  align-self: end;
  background: var(--bg-card);
  border: 1px solid var(--line-blue);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.page-faq .faq-search__label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.page-faq .faq-search__box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-deep);
  border: 1px solid var(--line);
  padding: 0 12px;
}
.page-faq .faq-search__box svg {
  color: var(--blue);
  flex: none;
}
.page-faq .faq-search__box input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font: inherit;
  padding: 12px 0;
}
.page-faq .faq-search__box input::placeholder {
  color: rgba(176, 184, 196, 0.65);
}
.page-faq .faq-search__box:focus-within {
  border-color: var(--line-blue);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}
.page-faq .faq-search__hint {
  font-size: 0.8125rem;
  color: var(--text-dim);
  margin: 10px 0 0;
  line-height: 1.6;
}
.page-faq .faq-search__hint kbd {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  padding: 1px 5px;
  color: var(--text);
}

/* ----- 章节通用 ----- */
.page-faq .section {
  padding: clamp(48px, 8vw, 96px) 0;
}
.page-faq .section-head {
  margin-bottom: 36px;
}

/* ----- 01 问题分类 ----- */
.page-faq .category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-faq .category-card {
  position: relative;
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 24px 20px 18px;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.page-faq .category-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: calc(100% + 2px);
  height: 4px;
  background: var(--accent);
  clip-path: polygon(0 0, 100% 0, calc(100% - 30px) 100%, 0 100%);
}
.page-faq .category-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-orange);
  box-shadow: var(--shadow);
}
.page-faq .category-card__code {
  position: absolute;
  top: 12px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}
.page-faq .category-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  color: var(--accent);
  background: var(--faq-accent-bg);
  border: 1px solid var(--line-orange);
}
.page-faq .category-card h3 {
  font-size: 1.0625rem;
  margin: 0 0 6px;
  font-weight: 800;
}
.page-faq .category-card p {
  font-size: 0.875rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin: 0 0 14px;
}
.page-faq .category-card__count {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.page-faq .category-card__count::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--accent);
  transform: rotate(45deg);
}
.page-faq .category-card--member::before {
  background: var(--blue);
}
.page-faq .category-card--member .category-card__icon {
  color: var(--blue);
  background: var(--faq-blue-bg);
  border-color: var(--line-blue);
}
.page-faq .category-card--member .category-card__count::before {
  background: var(--blue);
}
.page-faq .category-card--match::before {
  background: var(--accent-soft);
}
.page-faq .category-card--match .category-card__icon {
  color: var(--accent-soft);
  background: var(--faq-soft-bg);
  border-color: rgba(255, 154, 60, 0.35);
}
.page-faq .category-card--match .category-card__count::before {
  background: var(--accent-soft);
}
.page-faq .category-card--tech::before {
  background: var(--blue);
}
.page-faq .category-card--tech .category-card__icon {
  color: var(--blue);
  background: var(--faq-blue-bg);
  border-color: var(--line-blue);
}
.page-faq .category-card--tech .category-card__count::before {
  background: var(--blue);
}
.page-faq .faq-categories__visual {
  margin-top: 28px;
  border: 1px solid var(--line);
  padding: 6px;
  background: var(--bg-card);
}
.page-faq .faq-categories__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-categories__caption {
  margin: 10px 0 2px;
  font-size: 0.8125rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* ----- 02 常见问题 ----- */
.page-faq .faq-list-section {
  position: relative;
  border-top: 1px solid var(--line);
}
.page-faq .faq-list-section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 40%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--blue) 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 18px) 100%, 0 100%);
}
.page-faq .faq-layout {
  display: grid;
  gap: 32px;
  margin-top: 36px;
}
.page-faq .faq-toc {
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 20px;
}
.page-faq .faq-toc__title {
  font-size: 0.8125rem;
  color: var(--text-dim);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 12px;
}
.page-faq .faq-toc__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 600;
  border-left: 2px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.page-faq .faq-toc__link::before {
  content: "";
  width: 6px;
  height: 6px;
  background: transparent;
  border: 1px solid var(--text-dim);
  transform: rotate(45deg);
  flex: none;
}
.page-faq .faq-toc__link:hover {
  color: var(--text);
  border-left-color: var(--accent);
  background: rgba(255, 106, 0, 0.06);
}
.page-faq .faq-toc__link:hover::before {
  background: var(--accent);
  border-color: var(--accent);
}
.page-faq .faq-toc__note {
  margin-top: 18px;
  padding: 14px;
  border: 1px dashed var(--line-blue);
  background: rgba(0, 212, 255, 0.05);
}
.page-faq .faq-toc__note-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--blue);
  letter-spacing: 0.1em;
}
.page-faq .faq-toc__note p {
  margin: 6px 0 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-dim);
}
.page-faq .faq-toc__note strong {
  color: var(--text);
}
.page-faq .faq-groups {
  display: grid;
  gap: 36px;
  min-width: 0;
}
.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.125rem;
  font-weight: 800;
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
  color: var(--text);
}
.page-faq .faq-group__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 28px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--bg-deep);
  background: var(--accent);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%);
}
.page-faq .faq-group--member .faq-group__title {
  border-left-color: var(--blue);
}
.page-faq .faq-group--member .faq-group__badge {
  background: var(--blue);
}
.page-faq .faq-group--match .faq-group__title {
  border-left-color: var(--accent-soft);
}
.page-faq .faq-group--match .faq-group__badge {
  background: var(--accent-soft);
}
.page-faq .faq-group--tech .faq-group__title {
  border-left-color: var(--blue);
}
.page-faq .faq-group--tech .faq-group__badge {
  background: var(--blue);
}
.page-faq .faq-item {
  border: 1px solid var(--line);
  background: var(--bg-card);
  margin-bottom: 10px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.page-faq .faq-item[open] {
  border-color: var(--line-orange);
  box-shadow: var(--shadow);
}
.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  font-weight: 700;
  color: var(--text);
  font-size: 0.9375rem;
  line-height: 1.45;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:hover {
  background: rgba(255, 255, 255, 0.03);
}
.page-faq .faq-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--accent);
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-orange);
}
.page-faq .faq-item[open] summary::after {
  content: "–";
  background: var(--accent);
  color: var(--bg-deep);
}
.page-faq .faq-answer {
  padding: 0 20px 20px;
  color: var(--text-dim);
  font-size: 0.9375rem;
  line-height: 1.75;
}
.page-faq .faq-answer p {
  margin: 0 0 10px;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}

/* ----- 03 帮助文档入口 ----- */
.page-faq .faq-docs {
  position: relative;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(26, 29, 36, 0.55) 60%, transparent);
}
.page-faq .docs-grid {
  display: grid;
  gap: 28px;
  margin-top: 36px;
}
.page-faq .steps-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .step-card {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  transition: border-color 0.2s var(--ease);
}
.page-faq .step-card:hover {
  border-left-color: var(--accent);
}
.page-faq .step-num {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1;
  color: var(--accent);
  opacity: 0.9;
}
.page-faq .step-card:nth-child(even) .step-num {
  color: var(--blue);
}
.page-faq .step-card:nth-child(even) {
  border-left-color: rgba(0, 212, 255, 0.35);
}
.page-faq .step-card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
}
.page-faq .step-card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-dim);
}
.page-faq .docs-visual {
  border: 1px solid var(--line);
  padding: 8px;
  background: var(--bg-card);
  align-self: start;
}
.page-faq .docs-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .docs-visual__caption {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 12px 0 2px;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-dim);
}
.page-faq .docs-visual__caption span {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--bg-deep);
  background: var(--blue);
  padding: 3px 6px;
}
.page-faq .docs-action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
  margin-top: 28px;
  padding: 20px 24px;
  background: linear-gradient(90deg, rgba(255, 106, 0, 0.1), rgba(0, 212, 255, 0.05) 80%);
  border: 1px solid var(--line-orange);
}
.page-faq .docs-action p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ----- 04 联系支持 ----- */
.page-faq .faq-support {
  position: relative;
  padding: clamp(48px, 8vw, 80px) 0;
  background:
    linear-gradient(135deg, rgba(10, 30, 63, 0.95) 0%, rgba(13, 15, 20, 0.85) 60%, transparent 100%),
    var(--bg-deep);
  border-top: 1px solid var(--line-blue);
}
.page-faq .faq-support .container-narrow {
  text-align: center;
}
.page-faq .faq-support .section-index {
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--blue);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.page-faq .faq-support h2 {
  font-size: var(--text-h2);
  font-weight: 800;
  margin: 0 0 16px;
  color: var(--text);
}
.page-faq .faq-support .container-narrow > p {
  color: var(--text-dim);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 32px;
}
.page-faq .support-channels {
  display: grid;
  gap: 12px;
  text-align: left;
  margin-bottom: 28px;
}
.page-faq .support-channel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 18px 16px;
}
.page-faq .support-channel__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--blue);
  margin-bottom: 8px;
}
.page-faq .support-channel__value {
  display: block;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  word-break: break-all;
}
.page-faq .support-channel__note {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-dim);
  margin-top: 6px;
}
.page-faq .faq-support .btn {
  margin-bottom: 24px;
}
.page-faq .support-note {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  margin-bottom: 0;
}

/* ----- 响应式 ----- */
@media (min-width: 600px) {
  .page-faq .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 640px) {
  .page-faq .support-channels {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }
  .page-faq .docs-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 36px;
    align-items: start;
  }
}
@media (min-width: 920px) {
  .page-faq .faq-layout {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
  .page-faq .faq-toc {
    position: sticky;
    top: 24px;
  }
}
@media (min-width: 1024px) {
  .page-faq .category-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}