/* ==============================
   PAGE-FAQ 支持中心
   作用域限定 .page-faq
   ============================== */
.page-faq {
  --faq-accent: var(--c-neon);
  --faq-warn: var(--c-ember);
  --faq-viola: var(--c-violet);
  --faq-line: rgba(46, 74, 102, 0.55);
  --faq-mono: var(--font-mono);
  position: relative;
  color: var(--c-moon);
  padding: 1.5rem 0 4.5rem;
  background:
    radial-gradient(ellipse 90% 60% at 100% 0%, rgba(179, 136, 255, 0.10), transparent 65%),
    linear-gradient(180deg, var(--c-space) 0%, rgba(10, 31, 51, 0.6) 100%);
}

.page-faq .faq-bg-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.14;
  -webkit-mask-image: linear-gradient(180deg, black 0%, transparent 55%);
  mask-image: linear-gradient(180deg, black 0%, transparent 55%);
}

.page-faq .content-shell {
  position: relative;
  z-index: 1;
  padding: 0 1.25rem;
}

/* ----- 面包屑 ----- */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--faq-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  margin-bottom: 1.75rem;
  color: var(--c-mist);
}

.page-faq .breadcrumb a {
  color: var(--c-mist);
  text-decoration: none;
  transition: color 0.18s ease;
}

.page-faq .breadcrumb a:hover {
  color: var(--faq-accent);
}

.page-faq .breadcrumb-sep {
  color: var(--c-grid);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--c-moon);
}

/* ----- 首屏英雄区 ----- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.2rem;
  align-items: center;
}

.page-faq .faq-kicker {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0 0 1rem;
  font-family: var(--faq-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.page-faq .faq-kicker-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(19, 44, 69, 0.7);
  border: 1px solid var(--c-grid);
  padding: 0.3rem 0.6rem;
  color: var(--c-moon);
}

.page-faq .faq-kicker-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--faq-accent);
  display: inline-block;
}

.page-faq .faq-kicker-slash {
  color: var(--faq-accent);
  font-weight: 700;
}

.page-faq .faq-kicker-code {
  color: var(--c-mist);
}

.page-faq .faq-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 1.02;
  font-weight: 850;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.page-faq .faq-title-mark {
  font-size: 0.55em;
  color: var(--faq-accent);
  font-family: var(--faq-mono);
  font-weight: 400;
}

.page-faq .faq-hero-sub {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--c-mist);
}

.page-faq .faq-hero-desc {
  margin: 0.9rem 0 1.5rem;
  max-width: 52em;
  color: var(--c-mist);
  font-size: 0.95rem;
  line-height: 1.8;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.page-faq .faq-hero-actions .btn {
  gap: 0.4rem;
}

/* ----- 快速标签 ----- */
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  color: var(--c-mist);
  border: 1px solid var(--c-grid);
  text-decoration: none;
  transition: all 0.18s ease;
}

.page-faq .faq-tag::before {
  content: "#";
  color: var(--faq-accent);
  font-family: var(--faq-mono);
}

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

.page-faq .faq-tag:hover::before,
.page-faq .faq-tag:focus-visible::before {
  color: var(--c-space);
}

/* ----- 英雄区配图 ----- */
.page-faq .faq-hero-figure {
  position: relative;
  margin: 0;
}

.page-faq .faq-hero-figure::before {
  content: "";
  position: absolute;
  inset: 12px -8px -8px 12px;
  border: 1px solid var(--c-grid);
  z-index: 0;
}

.page-faq .faq-hero-figure img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid var(--c-grid);
  background: var(--c-panel);
  clip-path: polygon(0 0, 100% 0, 94% 100%, 5% 100%);
}

/* ----- 提示条 ----- */
.page-faq .faq-tipbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2.6rem;
  padding: 0.85rem 1.1rem;
  background: linear-gradient(90deg, rgba(19, 44, 69, 0.85), rgba(19, 44, 69, 0.35));
  border: 1px solid var(--c-grid);
  border-left: 3px solid var(--faq-accent);
}

.page-faq .faq-tipbar-symbol {
  flex: 0 0 auto;
  font-family: var(--faq-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  background: var(--faq-accent);
  color: var(--c-space);
  padding: 0.25rem 0.5rem;
}

.page-faq .faq-tipbar-text {
  margin: 0;
  flex: 1;
  min-width: 220px;
  color: var(--c-mist);
  font-size: 0.88rem;
  line-height: 1.7;
}

.page-faq .faq-tipbar-text strong {
  color: var(--c-moon);
  font-family: var(--faq-mono);
  font-weight: 500;
}

.page-faq .faq-tipbar-link {
  color: var(--faq-accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

.page-faq .faq-tipbar-link:hover,
.page-faq .faq-tipbar-link:focus-visible {
  color: var(--faq-warn);
}

/* ----- 双栏布局 ----- */
.page-faq .faq-layout {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  align-items: start;
}

/* ----- 侧边索引 ----- */
.page-faq .faq-index-panel {
  position: relative;
  background: rgba(19, 44, 69, 0.55);
  border: 1px solid var(--c-grid);
  padding: 1.4rem 1.3rem;
}

.page-faq .faq-index-panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 38%;
  height: 2px;
  background: var(--faq-accent);
}

.page-faq .faq-index-head {
  margin: 0 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--faq-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-faq .faq-index-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--faq-line);
}

.page-faq .faq-index-nav {
  display: grid;
  gap: 0.25rem;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 0.55rem;
  color: var(--c-moon);
  text-decoration: none;
  border-left: 2px solid transparent;
  font-size: 0.92rem;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  background: rgba(0, 230, 118, 0.07);
  border-left-color: var(--faq-accent);
  color: var(--faq-accent);
}

.page-faq .faq-index-no {
  font-family: var(--faq-mono);
  font-size: 0.75rem;
  color: var(--c-mist);
  transition: color 0.18s ease;
}

.page-faq .faq-index-link:hover .faq-index-no,
.page-faq .faq-index-link:focus-visible .faq-index-no {
  color: var(--faq-accent);
}

.page-faq .faq-index-foot {
  margin-top: 1.1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-index-action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding-left: 1.2rem;
  color: var(--faq-warn);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

.page-faq .faq-index-action:hover,
.page-faq .faq-index-action:focus-visible {
  color: var(--c-moon);
}

/* ----- 内容区 ----- */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: 2rem;
}

.page-faq .faq-section + .faq-section {
  margin-top: 3.5rem;
}

.page-faq .faq-section-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding-bottom: 1rem;
  margin-bottom: 1.3rem;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-section-num {
  flex: 0 0 auto;
  position: relative;
  top: 2px;
  font-family: var(--faq-mono);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.2;
  color: transparent;
  -webkit-text-stroke: 1px var(--faq-accent);
}

.page-faq .faq-section-title h2 {
  margin: 0;
  font-size: 1.55rem;
  line-height: 1.2;
}

.page-faq .faq-section-title p {
  margin: 0.35rem 0 0;
  color: var(--c-mist);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
}

/* ----- 手风琴 ----- */
.page-faq .faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-faq .faq-item {
  background: rgba(19, 44, 69, 0.55);
  border: 1px solid var(--c-grid);
  border-left: 3px solid var(--c-grid);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-item:hover {
  border-left-color: var(--faq-accent);
}

.page-faq .faq-item[open] {
  background: rgba(19, 44, 69, 0.8);
  border-left-color: var(--faq-accent);
}

.page-faq .faq-q {
  list-style: none;
  cursor: pointer;
  padding: 1.1rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  transition: background 0.18s ease;
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-q:hover {
  background: rgba(0, 230, 118, 0.04);
}

.page-faq .faq-q-mark {
  flex: 0 0 auto;
  width: 1.9rem;
  height: 1.9rem;
  display: grid;
  place-items: center;
  font-family: var(--faq-mono);
  font-weight: 700;
  font-size: 0.72rem;
  color: var(--c-moon);
  background: var(--c-grid);
  transition: background 0.2s ease, color 0.2s ease;
}

.page-faq .faq-item[open] .faq-q-mark {
  background: var(--faq-accent);
  color: var(--c-space);
}

.page-faq .faq-q-text {
  flex: 1;
  font-size: 0.97rem;
  line-height: 1.5;
  font-weight: 650;
  color: var(--c-moon);
}

.page-faq .faq-q-icon {
  flex: 0 0 auto;
  font-family: var(--faq-mono);
  font-size: 1rem;
  color: var(--c-mist);
  transition: transform 0.3s ease, color 0.3s ease;
}

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

.page-faq .faq-a {
  padding: 0 1.2rem 1.2rem;
  color: var(--c-mist);
  line-height: 1.85;
  font-size: 0.92rem;
}

.page-faq .faq-item[open] .faq-a {
  padding-top: 0.9rem;
  border-top: 1px dashed var(--faq-line);
}

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

.page-faq .faq-a strong {
  color: var(--c-moon);
  font-family: var(--faq-mono);
  font-weight: 600;
}

/* ----- 流程图 ----- */
.page-faq .faq-flow-figure {
  margin: 1.5rem 0 0;
  padding: 0.6rem;
  background: rgba(10, 31, 51, 0.4);
  border: 1px solid var(--c-grid);
}

.page-faq .faq-flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--c-panel);
}

.page-faq .faq-flow-figure figcaption {
  margin-top: 0.6rem;
  padding-left: 0.75rem;
  font-family: var(--faq-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--faq-viola);
  border-left: 2px solid var(--faq-accent);
}

/* ----- 联系面板 ----- */
.page-faq .faq-contact-panel {
  margin-top: 1.8rem;
  padding: 1.6rem 1.5rem;
  display: grid;
  gap: 1.5rem;
  background:
    linear-gradient(135deg, rgba(0, 230, 118, 0.06), transparent 55%),
    rgba(19, 44, 69, 0.6);
  border: 1px solid var(--c-grid);
  border-right: 3px solid var(--faq-warn);
}

.page-faq .faq-contact-label {
  margin: 0 0 0.5rem;
  font-family: var(--faq-mono);
  font-size: 0.73rem;
  letter-spacing: 0.14em;
  color: var(--faq-viola);
}

.page-faq .faq-contact-info h3 {
  margin: 0 0 0.6rem;
  font-size: 1.3rem;
  line-height: 1.3;
}

.page-faq .faq-contact-info p {
  margin: 0;
  color: var(--c-mist);
  font-size: 0.9rem;
  line-height: 1.75;
}

.page-faq .faq-contact-rows {
  display: grid;
  gap: 0.7rem;
  align-content: center;
}

.page-faq .faq-contact-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px dashed var(--faq-line);
  font-size: 0.92rem;
  color: var(--c-moon);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-faq .faq-contact-name {
  flex: 0 0 3.4rem;
  font-family: var(--faq-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--faq-accent);
}

/* ----- 焦点可见性 ----- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--faq-accent);
  outline-offset: 2px;
}

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-faq {
    padding-top: 2.25rem;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 2.5rem;
  }

  .page-faq .faq-hero-figure {
    margin: 0;
  }

  .page-faq .faq-contact-panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .content-shell {
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 1.5rem;
  }

  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 3rem;
  }

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

  .page-faq .faq-index-panel {
    padding: 1.5rem 1.4rem;
  }
}