/* ============ FAQ 页面专属 ============ */
.page-faq {
  --faq-deep: #071525;
  --faq-mid: #0E2B54;
  --faq-panel-shadow: 0 12px 36px rgba(11, 29, 58, 0.1);
  --faq-item-radius: 14px;
  background: var(--cloud-gray);
  color: var(--deep-charcoal);
  overflow-x: hidden;
}

.page-faq .mono,
.page-faq .faq-item__no,
.page-faq .faq-hot__num,
.page-faq .faq-group__index,
.page-faq .faq-sidebar__count,
.page-faq .faq-support__label,
.page-faq .faq-searchbox__hint {
  font-family: var(--font-mono);
}

/* ---------- Hero 顶部 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-offset) + 40px) 0 76px;
  background: linear-gradient(145deg, var(--faq-deep) 0%, var(--space-blue) 62%, var(--faq-mid) 100%);
  color: var(--pure-white);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 78% 22%, rgba(0, 229, 255, 0.14), transparent 38%),
              radial-gradient(circle at 12% 88%, rgba(57, 255, 20, 0.08), transparent 34%);
  pointer-events: none;
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.13;
  mix-blend-mode: screen;
  pointer-events: none;
}

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

.page-faq .faq-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  margin-bottom: 32px;
  color: rgba(255, 255, 255, 0.6);
}

.page-faq .faq-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.2s;
}

.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--electric-cyan);
}

.page-faq .faq-hero .breadcrumb-sep {
  color: rgba(255, 255, 255, 0.4);
}

.page-faq .faq-hero .breadcrumb-current {
  color: var(--electric-cyan);
}

.page-faq .faq-hero .eyebrow {
  display: block;
  color: var(--electric-cyan);
  margin-bottom: 10px;
}

.page-faq .faq-hero h1 {
  max-width: 760px;
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 4.4vw, 3.1rem);
  font-weight: 900;
  line-height: 1.18;
  margin: 0 0 18px;
  color: var(--pure-white);
}

.page-faq .faq-hero__desc {
  max-width: 680px;
  font-size: 1.02rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0 32px;
}

/* 搜索框 */
.page-faq .faq-searchbox {
  position: relative;
  max-width: 660px;
}

.page-faq .faq-searchbox__icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--electric-cyan);
  pointer-events: none;
  z-index: 1;
}

.page-faq .faq-searchbox__input {
  width: 100%;
  padding: 17px 20px 17px 54px;
  border-radius: var(--radius-pill);
  border: 2px solid rgba(0, 229, 255, 0.45);
  background: rgba(6, 15, 31, 0.7);
  color: var(--pure-white);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  backdrop-filter: blur(6px);
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.page-faq .faq-searchbox__input::placeholder {
  color: rgba(255, 255, 255, 0.42);
}

.page-faq .faq-searchbox__input:focus {
  border-color: var(--neon-green);
  box-shadow: 0 0 0 4px rgba(57, 255, 20, 0.14), var(--glow-cyan);
}

.page-faq .faq-searchbox__hint {
  display: block;
  margin-top: 12px;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.04em;
}

.page-faq .faq-searchbox__hint::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--signal-orange);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}

/* ---------- 热门问题 ---------- */
.page-faq .faq-hot {
  padding-top: 88px;
  padding-bottom: 64px;
}

.page-faq .faq-hot__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hot__head h2,
.page-faq .faq-panels > h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 900;
  color: var(--space-blue);
  margin: 8px 0 0;
}

.page-faq .faq-hot__head p {
  color: rgba(26, 26, 26, 0.6);
  margin: 4px 0 0;
}

.page-faq .faq-hot__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 34px;
}

.page-faq .faq-hot__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 24px 24px;
  background: var(--pure-white);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(11, 29, 58, 0.08);
  border-left: 4px solid var(--electric-cyan);
  text-decoration: none;
  color: var(--deep-charcoal);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out), border-color 0.3s;
}

.page-faq .faq-hot__card::before {
  content: "";
  position: absolute;
  top: -18px;
  right: -18px;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, transparent 48%, rgba(0, 229, 255, 0.14) 50%, rgba(0, 229, 255, 0.2) 100%);
  clip-path: polygon(0 0, 100% 100%, 100% 0);
  transition: transform 0.3s;
}

.page-faq .faq-hot__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2);
  border-left-color: var(--neon-green);
}

.page-faq .faq-hot__card:hover::before {
  transform: scale(1.2);
}

.page-faq .faq-hot__num {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--electric-cyan);
  letter-spacing: 0.08em;
}

.page-faq .faq-hot__card h3 {
  font-family: var(--font-heading);
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--space-blue);
  margin: 0;
  line-height: 1.35;
}

.page-faq .faq-hot__card p {
  font-size: 0.9rem;
  color: rgba(26, 26, 26, 0.62);
  line-height: 1.6;
  margin: 0;
}

.page-faq .faq-hot__card .tag {
  align-self: flex-start;
}

/* ---------- 主内容区 ---------- */
.page-faq .faq-main {
  background: var(--cloud-gray);
  padding: 8px 0 88px;
}

.page-faq .faq-main__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}

/* 侧边栏 */
.page-faq .faq-sidebar {
  position: relative;
  background: linear-gradient(160deg, var(--space-blue) 0%, #0D2145 100%);
  color: var(--pure-white);
  border-radius: var(--radius-lg);
  padding: 30px 26px 26px;
  overflow: hidden;
  min-width: 0;
}

.page-faq .faq-sidebar::after {
  content: "";
  position: absolute;
  right: -44px;
  top: -44px;
  width: 104px;
  height: 104px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.28) 0%, rgba(0, 229, 255, 0.28) 48%, transparent 50%);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-faq .faq-sidebar h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 900;
  margin: 10px 0 6px;
  color: var(--pure-white);
}

.page-faq .faq-sidebar > p {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  margin: 0 0 22px;
}

.page-faq .faq-sidebar .section-label {
  color: var(--neon-green);
}

.page-faq .faq-sidebar__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.page-faq .faq-sidebar__list li {
  margin-bottom: 8px;
}

.page-faq .faq-sidebar__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  background: transparent;
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}

.page-faq .faq-sidebar__list a:hover {
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.35);
  color: var(--electric-cyan);
}

.page-faq .faq-sidebar__list a.is-active {
  background: rgba(0, 229, 255, 0.14);
  border-color: var(--electric-cyan);
  color: var(--electric-cyan);
}

.page-faq .faq-sidebar__count {
  font-size: 0.76rem;
  color: var(--neon-green);
  background: rgba(57, 255, 20, 0.1);
  border-radius: var(--radius-pill);
  padding: 2px 8px;
}

.page-faq .faq-sidebar__note {
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 16px 16px 14px;
  border-left: 3px solid var(--signal-orange);
}

.page-faq .faq-sidebar__note p {
  font-size: 0.84rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
  margin: 10px 0 0;
}

.page-faq .faq-sidebar__note a {
  color: var(--electric-cyan);
  text-decoration: none;
  font-weight: 600;
}

.page-faq .faq-sidebar__note a:hover {
  text-decoration: underline;
}

/* 问答面板区 */
.page-faq .faq-panels {
  min-width: 0;
}

.page-faq .faq-panels > h2 {
  margin-top: 6px;
  margin-bottom: 36px;
}

.page-faq .faq-group {
  margin-bottom: 44px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(11, 29, 58, 0.12);
}

.page-faq .faq-group__index {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--electric-cyan);
  background: rgba(0, 229, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 2px 10px;
  line-height: 1.4;
}

.page-faq .faq-group__head h3 {
  font-family: var(--font-heading);
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--space-blue);
  margin: 0;
}

/* 折叠面板 */
.page-faq .faq-item {
  position: relative;
  background: var(--pure-white);
  border-radius: var(--faq-item-radius);
  border: 1px solid rgba(11, 29, 58, 0.08);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.3s, border-color 0.3s;
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--electric-cyan), var(--neon-green));
  transform: skewY(-14deg);
  transform-origin: top left;
  opacity: 0;
  transition: opacity 0.35s;
  z-index: 2;
}

.page-faq .faq-item[open] {
  border-color: rgba(0, 229, 255, 0.45);
  box-shadow: var(--faq-panel-shadow);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 14px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.3s;
}

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

.page-faq .faq-item summary:hover {
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
}

.page-faq .faq-item[open] summary {
  border-bottom: 1px dashed rgba(0, 229, 255, 0.2);
}

.page-faq .faq-item__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 5px 12px 5px 10px;
  color: var(--neon-green);
  background: var(--space-blue);
  clip-path: polygon(0 0, 100% 0, 90% 100%, 0 100%);
}

.page-faq .faq-item__title {
  flex: 1;
  font-weight: 600;
  font-size: 0.98rem;
  line-height: 1.45;
  color: var(--space-blue);
}

.page-faq .faq-item__icon {
  flex-shrink: 0;
  position: relative;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid rgba(0, 229, 255, 0.4);
  background: rgba(0, 229, 255, 0.06);
  transition: border-color 0.3s, background 0.3s;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--electric-cyan);
  transition: transform 0.3s var(--ease-out);
}

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

.page-faq .faq-item__icon::after {
  top: 4px;
  bottom: 4px;
  left: 8px;
  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(--neon-green);
  background: rgba(57, 255, 20, 0.1);
}

.page-faq .faq-item__body {
  padding: 16px 18px 18px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(26, 26, 26, 0.78);
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
}

.page-faq .faq-item__body p:last-child,
.page-faq .faq-item__body ol:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__body ol {
  margin: 0 0 12px;
  padding-left: 18px;
}

.page-faq .faq-item__body li {
  margin-bottom: 6px;
  padding-left: 2px;
}

.page-faq .faq-item__body li::marker {
  color: var(--electric-cyan);
  font-family: var(--font-mono);
}

.page-faq .faq-item__body a {
  color: var(--electric-cyan);
  text-decoration: none;
  font-weight: 600;
}

.page-faq .faq-item__body a:hover {
  text-decoration: underline;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  position: relative;
  background: linear-gradient(135deg, #071525 0%, var(--space-blue) 55%, #123064 100%);
  color: var(--pure-white);
  padding: 88px 0;
  overflow: hidden;
}

.page-faq .faq-support::before {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 255, 20, 0.14) 0%, transparent 68%);
  top: -180px;
  right: -100px;
  pointer-events: none;
}

.page-faq .faq-support::after {
  content: "";
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.14) 0%, transparent 66%);
  bottom: -140px;
  left: -80px;
  pointer-events: none;
}

.page-faq .faq-support .section-label {
  color: var(--neon-green);
}

.page-faq .faq-support__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 52px;
  align-items: center;
}

.page-faq .faq-support__info h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 900;
  color: var(--pure-white);
  margin: 10px 0 12px;
}

.page-faq .faq-support__info > p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.96rem;
  line-height: 1.8;
  margin: 0 0 28px;
  max-width: 520px;
}

.page-faq .faq-support__contact {
  margin-bottom: 26px;
}

.page-faq .faq-support__line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.page-faq .faq-support__label {
  width: 82px;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--neon-green);
  flex-shrink: 0;
}

.page-faq .faq-support__mail {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--electric-cyan);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  word-break: break-all;
}

.page-faq .faq-support__phone,
.page-faq .faq-support__address {
  font-weight: 500;
  color: var(--pure-white);
  word-break: break-all;
}

.page-faq .faq-support__footnote {
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
  max-width: 460px;
  border-left: 3px solid var(--signal-orange);
  padding-left: 14px;
  margin-top: 8px;
}

.page-faq .faq-support__visual {
  position: relative;
  display: flex;
  justify-content: center;
  margin: 0 auto;
  max-width: 440px;
}

.page-faq .faq-support__visual::before {
  content: "";
  position: absolute;
  inset: 14px -14px -14px 14px;
  border: 2px solid rgba(0, 229, 255, 0.4);
  border-radius: var(--radius-lg);
  transform: rotate(-2.5deg);
  pointer-events: none;
}

.page-faq .faq-support__img {
  position: relative;
  width: 100%;
  height: auto;
  max-width: 400px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
  object-fit: cover;
}

/* ---------- 滚动显现 ---------- */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration) var(--ease-out), transform var(--duration) var(--ease-out);
}

.page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.page-faq .delay-1 {
  transition-delay: 0.1s;
}

.page-faq .delay-2 {
  transition-delay: 0.2s;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hot__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-item summary {
    padding: 18px 20px;
  }

  .page-faq .faq-item__body {
    padding: 18px 24px 22px 76px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-main {
    padding: 16px 0 100px;
  }

  .page-faq .faq-main__layout {
    grid-template-columns: 290px minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: var(--header-offset);
  }

  .page-faq .faq-support__layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
    gap: 72px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .faq-hot__card:hover,
  .page-faq .faq-item summary:hover,
  .page-faq .faq-searchbox__input:focus {
    transform: none;
    box-shadow: none;
  }
}