.page-faq {
  --faq-accent: var(--neon-green);
  --faq-grid-size: 24px;
  background: var(--night-blue);
  color: var(--text-light);
  overflow-x: hidden;
}

/* ===== Hero ===== */
.page-faq .faq-hero {
  padding: clamp(40px, 6vw, 76px) 0 28px;
  position: relative;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(138, 43, 226, 0.2) 0%, transparent 58%);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: var(--faq-grid-size) var(--faq-grid-size);
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 28px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-copy {
  max-width: 720px;
}

.page-faq .faq-hero-copy::before {
  content: "";
  display: block;
  width: 58px;
  height: 10px;
  background: linear-gradient(90deg, var(--neon-green), var(--volt-purple));
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  margin-bottom: 18px;
}

.page-faq .faq-hero-copy .page-eyebrow {
  color: var(--text-soft);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.page-faq .faq-hero-copy .page-eyebrow a {
  color: var(--text-soft);
  text-decoration: none;
  transition: color var(--transition);
}

.page-faq .faq-hero-copy .page-eyebrow a:hover {
  color: var(--neon-green);
}

.page-faq .faq-hero-copy h1 {
  font-family: var(--font-title);
  font-size: clamp(1.9rem, 4.4vw, 3.2rem);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 8px 0 14px;
  line-height: 1.15;
}

.page-faq .faq-hero-copy .faq-lead {
  color: var(--text-soft);
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  line-height: 1.75;
  max-width: 560px;
  margin: 0;
}

/* ===== 搜索框 ===== */
.page-faq .faq-search {
  background: var(--panel-blue);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-search label {
  display: block;
  font-family: var(--font-title);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  margin-bottom: 10px;
}

.page-faq .faq-search input[type="search"] {
  width: 100%;
  background: rgba(10, 25, 47, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 12px 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.page-faq .faq-search input[type="search"]:focus {
  border-color: var(--neon-green);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.14);
}

.page-faq .faq-search input[type="search"]::placeholder {
  color: var(--text-dim);
}

.page-faq .faq-search-hint {
  margin: 10px 0 0;
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ===== Banner ===== */
.page-faq .faq-banner {
  margin: 8px 0 44px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel-blue);
  position: relative;
}

.page-faq .faq-banner::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 4px;
  background: linear-gradient(90deg, var(--neon-green), var(--volt-purple), transparent);
}

.page-faq .faq-banner img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  object-fit: cover;
}

/* ===== 主体布局 ===== */
.page-faq .faq-layout {
  display: grid;
  gap: 32px;
  padding-bottom: 72px;
}

/* ===== 目录 ===== */
.page-faq .faq-toc {
  position: relative;
  z-index: 2;
  align-self: start;
}

.page-faq .faq-toc-title {
  font-family: var(--font-title);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-soft);
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-toc .toc-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-toc .toc-list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-toc .toc-link {
  display: block;
  white-space: nowrap;
  padding: 9px 14px;
  background: var(--panel-blue);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
  color: var(--text-soft);
  text-decoration: none;
  font-size: 0.92rem;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.page-faq .faq-toc .toc-link:hover,
.page-faq .faq-toc .toc-link.is-active {
  color: var(--neon-green);
  border-left-color: var(--neon-green);
  background: rgba(57, 255, 20, 0.07);
}

.page-faq .faq-help-cta {
  width: 100%;
  justify-content: center;
}

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

.page-faq .faq-section {
  margin-bottom: 58px;
}

.page-faq .faq-section:last-child {
  margin-bottom: 0;
}

.page-faq .faq-section > h2 {
  font-family: var(--font-title);
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  letter-spacing: 0.04em;
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-faq .faq-section > h2::before {
  content: "";
  width: 8px;
  height: 28px;
  flex-shrink: 0;
  display: inline-block;
  background: var(--volt-purple);
  clip-path: polygon(0 0, 100% 25%, 100% 75%, 0 100%);
}

.page-faq .faq-section > h2::after {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, var(--line), transparent);
}

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ===== 手风琴 ===== */
.page-faq .faq-item {
  background: var(--panel-blue);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.page-faq .faq-item:hover {
  border-color: rgba(138, 43, 226, 0.45);
}

.page-faq .faq-item > summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 18px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 12px;
  line-height: 1.5;
}

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

.page-faq .faq-item > summary::before {
  content: "?";
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--neon-green);
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid rgba(57, 255, 20, 0.35);
  border-radius: 6px;
}

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--volt-purple);
  transition: transform var(--transition), content var(--transition);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
  transform: rotate(180deg);
}

.page-faq .faq-item[open] {
  border-color: rgba(57, 255, 20, 0.4);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.07);
}

.page-faq .faq-answer {
  padding: 2px 18px 20px 54px;
  color: var(--text-soft);
  font-size: 0.96rem;
  line-height: 1.75;
}

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

.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}

/* ===== 联系信息条 ===== */
.page-faq .faq-contact-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  background: rgba(10, 25, 47, 0.62);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-top: 14px;
}

.page-faq .faq-contact-strip span {
  color: var(--text-dim);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.page-faq .faq-contact-strip strong {
  color: var(--text-light);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.95rem;
}

/* ===== 二维码 ===== */
.page-faq .faq-qr {
  margin: 18px 0 0;
  max-width: 240px;
}

.page-faq .faq-qr img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
}

/* ===== 内联链接 ===== */
.page-faq .faq-inline-link {
  display: inline-block;
  margin-top: 6px;
  color: var(--neon-green);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.page-faq .faq-inline-link:hover {
  color: var(--text-light);
}

/* ===== 支持面板 ===== */
.page-faq .faq-support-panel {
  background: linear-gradient(135deg, rgba(138, 43, 226, 0.16), rgba(10, 25, 47, 0) 72%);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 8px;
}

.page-faq .faq-support-panel p {
  flex-basis: 100%;
  margin: 0;
  color: var(--text-light);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* ===== 按钮修饰 ===== */
.page-faq .faq-support-panel .btn,
.page-faq .faq-help-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 500;
}

/* ===== 桌面端 ===== */
@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: end;
  }

  .page-faq .faq-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
    gap: 48px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-toc .toc-list {
    display: block;
    overflow-x: visible;
    margin-bottom: 20px;
  }

  .page-faq .faq-toc .toc-link {
    white-space: normal;
    background: transparent;
    border: none;
    border-left: 3px solid var(--line);
    border-radius: 0;
    padding: 10px 12px;
  }

  .page-faq .faq-toc .toc-link:hover,
  .page-faq .faq-toc .toc-link.is-active {
    border-left-color: var(--neon-green);
    background: rgba(57, 255, 20, 0.06);
  }

  .page-faq .faq-qr {
    max-width: 300px;
  }
}