/* ===== 支持中心 .page-faq ===== */
.page-faq {
  --faq-border: rgba(192, 199, 216, 0.16);
  --faq-border-strong: rgba(192, 199, 216, 0.3);
  position: relative;
  background: var(--color-space);
  color: var(--color-fog);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq a {
  color: var(--color-electric);
  text-decoration: none;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-headline);
  font-weight: 900;
  line-height: 1.15;
}

/* ---------- 英雄区 ---------- */
.faq-hero {
  position: relative;
  padding: 2.5rem var(--content-gutter) 3.5rem;
  background:
    linear-gradient(118deg, rgba(17, 26, 61, 0.95) 0%, rgba(10, 15, 36, 0.45) 55%, rgba(10, 15, 36, 0.1) 100%),
    repeating-linear-gradient(0deg, transparent 0, transparent 4px, rgba(0, 194, 255, 0.04) 4px, rgba(0, 194, 255, 0.04) 5px);
  border-bottom: 1px solid rgba(255, 107, 44, 0.35);
}

.faq-hero::before {
  content: "Q&A";
  position: absolute;
  right: 3%;
  top: 10%;
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: clamp(4rem, 10vw, 8rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(192, 199, 216, 0.06);
  pointer-events: none;
}

.faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange) 0%, var(--color-orange) 55%, transparent 100%);
}

.faq-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.faq-hero-kicker {
  margin: 0 0 0.9rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--color-orange);
}

.faq-hero-title {
  margin: 0 0 0.75rem;
  font-size: clamp(2.25rem, 7vw, 4.25rem);
  color: var(--color-fog);
}

.faq-hero-sub {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-body);
  font-size: 0.46em;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-silver);
}

.faq-hero-desc {
  max-width: 60ch;
  margin: 0 0 1.75rem;
  color: var(--color-silver);
  line-height: 1.75;
}

.faq-hero-desc b {
  color: var(--color-fog);
  font-weight: 600;
}

.faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.faq-hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  max-width: 560px;
  margin-top: 2rem;
}

.faq-hero .stat-block {
  background: rgba(17, 26, 61, 0.7);
  border: 1px solid var(--faq-border);
  border-left: 2px solid var(--color-orange);
  padding: 0.8rem 0.9rem;
}

.faq-hero .stat-value {
  display: block;
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1.65rem;
  line-height: 1.1;
  color: var(--color-fog);
}

.faq-hero .stat-value small {
  font-size: 0.55em;
  font-weight: 700;
  color: var(--color-orange);
}

.faq-hero .stat-label {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--color-gray);
}

/* ---------- 搜索帮助 ---------- */
.faq-search {
  display: grid;
  gap: 1.5rem;
  padding: clamp(2.5rem, 5vw, 4.5rem) var(--content-gutter);
}

.faq-search-visual {
  position: relative;
  max-width: 400px;
  justify-self: start;
}

.faq-search-img {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-m);
  border: 1px solid var(--faq-border);
  filter: saturate(0.92) contrast(1.08);
}

.faq-search-badge {
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: var(--color-orange);
  color: var(--color-space);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-pill);
}

.faq-search-main {
  min-width: 0;
}

.faq-search .section-eyebrow,
.faq-panel .section-eyebrow,
.faq-contact .section-eyebrow {
  color: var(--color-orange);
  margin-bottom: 0.35rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.faq-search h2,
.faq-panel h2,
.faq-contact h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.faq-search-lead {
  margin: 0 0 1.25rem;
  color: var(--color-silver);
  line-height: 1.6;
}

.faq-searchbox {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(17, 26, 61, 0.7);
  border: 1px solid var(--faq-border-strong);
  border-radius: var(--radius-m);
  padding: 0.75rem 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-searchbox:focus-within {
  border-color: var(--color-orange);
  box-shadow: 0 0 0 3px rgba(255, 107, 44, 0.18);
}

.faq-searchbox-icon {
  flex: none;
  color: var(--color-orange);
}

.faq-searchbox-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-fog);
  font-family: var(--font-body);
  font-size: 1rem;
}

.faq-searchbox-input::placeholder {
  color: var(--color-gray);
}

.page-faq .filter-bar {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .filter-btn {
  background: transparent;
  border: 1px solid var(--faq-border-strong);
  color: var(--color-silver);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.page-faq .filter-btn:hover {
  border-color: var(--color-orange);
  color: var(--color-fog);
}

.page-faq .filter-btn.is-active {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-space);
  font-weight: 700;
}

.page-faq [data-hidden] {
  display: none !important;
}

/* ---------- 热门问题 ---------- */
.faq-panel {
  position: relative;
  padding: clamp(2.5rem, 5vw, 4.5rem) var(--content-gutter);
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 107, 44, 0.08), transparent 34%),
    linear-gradient(180deg, rgba(17, 26, 61, 0.38), rgba(10, 15, 36, 0.22));
}

.faq-panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--faq-border);
}

.faq-panel-note {
  margin: 0 0 0.35rem;
  color: var(--color-gray);
  font-size: 0.8125rem;
}

.faq-layout {
  display: grid;
  gap: 1.5rem;
}

.faq-index {
  align-self: start;
  padding: 1.25rem;
  background: rgba(17, 26, 61, 0.68);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-m);
}

.faq-index-title {
  margin: 0 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--faq-border);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-orange);
}

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

.faq-index-list li + li {
  border-top: 1px dashed rgba(192, 199, 216, 0.12);
}

.faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.65rem 0.25rem;
  color: var(--color-silver);
  font-size: 0.875rem;
  line-height: 1.5;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.faq-index-list a span {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-orange);
}

.faq-index-list a:hover {
  color: var(--color-electric);
  padding-left: 0.5rem;
}

.faq-index-more {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  border-bottom: 1px dotted var(--color-electric);
  color: var(--color-electric);
}

/* ---------- 答案面板 ---------- */
.faq-items {
  min-width: 0;
}

.faq-item {
  background: rgba(17, 26, 61, 0.55);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-m);
  transition: border-color var(--transition-fast), box-shadow var(--transition-standard), background var(--transition-fast);
}

.faq-item + .faq-item {
  margin-top: 0.75rem;
}

.faq-item[open] {
  background: rgba(17, 26, 61, 0.82);
  border-color: rgba(255, 107, 44, 0.42);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.24);
}

.faq-item:target {
  box-shadow: 0 0 0 2px rgba(255, 107, 44, 0.28);
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
}

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

.faq-item-no {
  min-width: 2ch;
  font-family: var(--font-headline);
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--color-orange);
}

.faq-item-title {
  flex: 1;
  color: var(--color-fog);
  font-weight: 600;
  line-height: 1.45;
}

.faq-item-icon {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  border: 1px solid var(--color-silver);
  border-radius: var(--radius-pill);
  transition: transform var(--transition-standard), border-color var(--transition-fast);
}

.faq-item-icon::before,
.faq-item-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  background: var(--color-silver);
  transform: translate(-50%, -50%);
  transition: background var(--transition-fast);
}

.faq-item-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item[open] .faq-item-icon {
  transform: rotate(180deg);
  border-color: var(--color-orange);
}

.faq-item[open] .faq-item-icon::before,
.faq-item[open] .faq-item-icon::after {
  background: var(--color-orange);
}

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

.faq-item-body {
  position: relative;
  margin-left: 1.25rem;
  padding: 0 1.25rem 1.1rem 2.75rem;
  border-left: 2px solid rgba(255, 107, 44, 0.35);
  color: var(--color-silver);
  line-height: 1.75;
}

.faq-item-body::before {
  content: "ANS";
  position: absolute;
  left: -0.75rem;
  top: 0.2rem;
  display: grid;
  place-items: center;
  width: 1.4rem;
  height: 1.4rem;
  background: var(--color-orange);
  border-radius: var(--radius-pill);
  color: var(--color-space);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.faq-item-body p {
  margin: 0 0 0.7rem;
}

.faq-item-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding-bottom: 0.1rem;
  font-size: 0.8125rem;
  border-bottom: 1px dotted rgba(0, 194, 255, 0.55);
  color: var(--color-electric);
}

/* ---------- 联系客服 ---------- */
.faq-contact {
  display: grid;
  gap: 1.5rem;
  padding: clamp(2.5rem, 5vw, 4.5rem) var(--content-gutter);
}

.faq-contact-img {
  width: 100%;
  max-width: 200px;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: rgba(17, 26, 61, 0.5);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-m);
}

.faq-contact-main {
  min-width: 0;
}

.faq-contact-desc {
  margin: 0 0 1.25rem;
  color: var(--color-silver);
  line-height: 1.7;
}

.faq-contact-desc a {
  color: var(--color-electric);
  border-bottom: 1px dotted rgba(0, 194, 255, 0.55);
}

.faq-contact-channels {
  display: grid;
  gap: 0.75rem;
}

.faq-contact-channel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background: rgba(17, 26, 61, 0.68);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-m);
  color: var(--color-fog);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.faq-contact-channel:hover {
  border-color: var(--color-orange);
  transform: translateY(-2px);
}

.faq-contact-channel-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-orange);
}

.faq-contact-channel-value {
  font-size: 0.95rem;
  word-break: break-all;
}

.faq-contact-more {
  display: inline-block;
  margin-top: 1.25rem;
  font-size: 0.875rem;
  border-bottom: 1px dotted rgba(0, 194, 255, 0.55);
  color: var(--color-electric);
}

/* ---------- 桌面端布局 ---------- */
@media (min-width: 1024px) {
  .faq-hero {
    padding-top: 3.5rem;
    padding-bottom: 5.5rem;
  }

  .faq-search {
    grid-template-columns: 400px 1fr;
    align-items: center;
  }

  .faq-search-visual {
    justify-self: start;
  }

  .faq-layout {
    grid-template-columns: 300px 1fr;
    align-items: start;
  }

  .faq-index {
    position: sticky;
    top: 2rem;
  }

  .faq-contact {
    grid-template-columns: 220px 1fr;
    align-items: center;
  }

  .faq-contact-img {
    width: 220px;
    height: 220px;
  }
}