.page-faq {
  position: relative;
  background: var(--color-bg);
  overflow: hidden;
}

/* ---- 页面标题层 ---- */
.page-faq .faq-hero {
  position: relative;
  padding-top: 56px;
  padding-bottom: 44px;
  background:
    radial-gradient(circle at 88% 12%, rgba(0, 229, 255, .14), transparent 34%),
    linear-gradient(rgba(15, 42, 95, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 42, 95, .05) 1px, transparent 1px),
    var(--color-bg);
  background-size: auto, 28px 28px, 28px 28px, auto;
}

.page-faq .breadcrumbs {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-slate);
  margin-bottom: 20px;
}
.page-faq .breadcrumbs a {
  color: var(--color-engine);
  text-decoration: none;
}
.page-faq .breadcrumbs-sep {
  margin: 0 8px;
  color: var(--color-slate);
  opacity: .6;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 24px;
  align-items: end;
}
.page-faq .faq-hero .section-kicker {
  color: var(--color-orange);
}
.page-faq .faq-hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-navy);
  margin: 8px 0 14px;
  letter-spacing: -0.02em;
}
.page-faq .page-intro {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.75;
  color: var(--color-slate);
  max-width: 56ch;
  margin: 0;
}

/* 搜索框形状装饰，不执行实际搜索 */
.page-faq .search-decor {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 420px;
  padding: 12px 18px;
  background: rgba(255, 255, 255, .82);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  box-shadow: 0 16px 40px rgba(15, 42, 95, .08);
  backdrop-filter: blur(4px);
}
.page-faq .search-decor-icon {
  flex-shrink: 0;
  color: var(--color-engine);
}
.page-faq .search-decor-text {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-slate);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.page-faq .search-decor-badge {
  margin-left: auto;
  flex-shrink: 0;
  padding: 4px 12px;
  background: var(--color-navy);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  border-radius: 999px;
}

/* ---- 通用章节节奏 ---- */
.page-faq .section {
  padding: 56px 0;
}
.page-faq .section-head {
  margin-bottom: 28px;
}
.page-faq .section-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.page-faq .section-title {
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-navy);
  margin: 0 0 10px;
}
.page-faq .section-desc {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-slate);
  max-width: 60ch;
  margin: 0;
}

/* ---- 初学者快速上手 ---- */
.page-faq .quickstart {
  padding-top: 16px;
}
.page-faq .quickstart-layout {
  display: grid;
  gap: 32px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}
.page-faq .quickstart-media {
  margin: 0;
}
.page-faq .quickstart-media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}
.page-faq .quickstart-media figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-slate);
  text-align: right;
  margin-top: 10px;
}
.page-faq .quickstart-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}
.page-faq .qs-step {
  display: flex;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px dashed rgba(15, 42, 95, .16);
}
.page-faq .qs-step:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-faq .qs-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-night);
  color: var(--color-gold);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 800;
}
.page-faq .qs-step-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-ink);
  margin: 2px 0 6px;
}
.page-faq .qs-step-body p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-slate);
}

/* ---- 5条FAQ 展墙 ---- */
.page-faq .faq-wall {
  position: relative;
  padding: 80px 0;
  background: var(--color-night);
  color: #fff;
}
.page-faq .faq-wall-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: .18;
  pointer-events: none;
}
.page-faq .faq-wall-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-faq .faq-wall .section-kicker {
  color: var(--color-cyan);
}
.page-faq .faq-wall .section-title {
  color: #fff;
}
.page-faq .faq-wall .section-desc {
  color: rgba(255, 255, 255, .72);
}

.page-faq .faq-layout {
  display: grid;
  gap: 28px;
  margin-top: 36px;
  position: relative;
  z-index: 1;
}

/* FAQ 目录 */
.page-faq .faq-index {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius-md);
  padding: 22px;
}
.page-faq .faq-index-title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0 0 14px;
}
.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}
.page-faq .faq-index-list li {
  margin: 0;
}
.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 15px;
  line-height: 1.5;
  color: rgba(255, 255, 255, .85);
  text-decoration: none;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}
.page-faq .faq-index-list a::before {
  content: '';
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-cyan);
  transform: translateY(-2px);
}
.page-faq .faq-index-list a:hover {
  color: #fff;
  background: rgba(0, 229, 255, .14);
  transform: translateX(4px);
}

/* FAQ 展牌卡片 */
.page-faq .faq-list {
  display: grid;
  gap: 16px;
}
.page-faq .faq-card {
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius-md);
  background: var(--color-navy);
  overflow: hidden;
  transition: box-shadow .3s ease, transform .3s ease, background .3s ease;
}
.page-faq .faq-card:hover {
  box-shadow: 0 0 0 2px var(--color-cyan), 0 20px 48px rgba(0, 229, 255, .18);
  transform: translateY(-2px);
}
.page-faq .faq-card[open] {
  background: var(--color-bg);
  border-color: rgba(15, 42, 95, .12);
}
.page-faq .faq-card-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px 20px;
  list-style: none;
  cursor: pointer;
  color: #fff;
}
.page-faq .faq-card-head::-webkit-details-marker {
  display: none;
}
.page-faq .faq-card-head::after {
  content: '+';
  flex-shrink: 0;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 300;
  line-height: 1;
  color: var(--color-cyan);
  transition: transform .25s ease, color .25s ease;
}
.page-faq .faq-card[open] .faq-card-head::after {
  content: '−';
  color: var(--color-orange);
  transform: rotate(180deg);
}
.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
  color: var(--color-gold);
  flex-shrink: 0;
}
.page-faq .faq-card[open] .faq-num {
  color: var(--color-orange);
}
.page-faq .faq-question {
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  padding-top: 2px;
}
.page-faq .faq-card[open] .faq-question {
  color: var(--color-ink);
}
.page-faq .faq-card-body {
  padding: 0 20px 24px;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-ink);
}
.page-faq .faq-card-body p {
  margin: 0 0 12px;
}
.page-faq .faq-action {
  margin-top: 14px;
}
.page-faq .faq-action .btn {
  font-family: var(--font-sans);
}

/* ---- 换手机与设备迁移 ---- */
.page-faq .device-migration {
  background: linear-gradient(180deg, var(--color-bg) 0%, #fff 100%);
}
.page-faq .device-migration-inner {
  position: relative;
  padding: 32px 24px;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.page-faq .device-migration-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-engine), var(--color-cyan));
}
.page-faq .migration-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .migration-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(15, 42, 95, .04);
  border-left: 3px solid var(--color-engine);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-ink);
}
.page-faq .migration-index {
  flex-shrink: 0;
  background: var(--color-night);
  color: var(--color-gold);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 6px;
  transform: translateY(2px);
}
.page-faq .migration-more {
  margin: 22px 0 0;
  font-size: 15px;
  color: var(--color-slate);
}
.page-faq .migration-more a {
  color: var(--color-engine);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid rgba(20, 75, 143, .25);
  transition: border-color .2s ease;
}
.page-faq .migration-more a:hover {
  border-color: var(--color-cyan);
}

/* ---- 账号与登录安全 ---- */
.page-faq .account-security {
  background: var(--color-bg);
}
.page-faq .security-grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}
.page-faq .security-card {
  position: relative;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  transition: transform .25s ease, box-shadow .25s ease;
}
.page-faq .security-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(15, 42, 95, .1);
}
.page-faq .security-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: var(--color-navy);
  color: var(--color-gold);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 800;
}
.page-faq .security-card h3 {
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 8px;
}
.page-faq .security-card p {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-slate);
  margin: 0;
}

/* ---- 联系人工支持 ---- */
.page-faq .contact-support {
  position: relative;
  padding: 80px 0;
  background: var(--color-navy);
  color: #fff;
  overflow: hidden;
}
.page-faq .contact-support::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -12%;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, .22), transparent 68%);
}
.page-faq .contact-support .section-kicker {
  color: var(--color-gold);
}
.page-faq .contact-support .section-title {
  color: #fff;
}
.page-faq .contact-support .section-desc {
  color: rgba(255, 255, 255, .78);
}
.page-faq .support-cards {
  display: grid;
  gap: 20px;
  margin-top: 30px;
  position: relative;
  z-index: 1;
}
.page-faq .support-card-main,
.page-faq .support-card-sub {
  padding: 28px 24px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--radius-md);
}
.page-faq .support-card-main h3,
.page-faq .support-card-sub h3 {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0 0 12px;
}
.page-faq .support-email {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 800;
  color: var(--color-cyan);
  word-break: break-all;
  margin: 0 0 12px;
}
.page-faq .support-card-main p,
.page-faq .support-card-sub p {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .88);
  margin: 0 0 12px;
}
.page-faq .support-trust {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .16);
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .65);
}
.page-faq .support-card-sub .btn {
  margin-top: 8px;
}

/* ---- 桌面端断点 ---- */
@media (min-width: 768px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 7fr 5fr;
  }
  .page-faq .quickstart-layout {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    padding: 36px;
  }
  .page-faq .section-title {
    font-size: 32px;
  }
  .page-faq .migration-list {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq .security-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq .support-cards {
    grid-template-columns: 3fr 2fr;
  }
  .page-faq .support-email {
    font-size: 24px;
  }
}

@media (min-width: 992px) {
  .page-faq .faq-layout {
    grid-template-columns: 260px 1fr;
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 140px;
  }
  .page-faq .faq-index-list {
    display: grid;
    gap: 4px;
  }
  .page-faq .faq-card-head {
    padding: 24px;
  }
  .page-faq .faq-card-body {
    padding: 0 24px 26px;
  }
  .page-faq .faq-question {
    font-size: 18px;
  }
}

/* 移动端目录横向滚动 */
@media (max-width: 991px) {
  .page-faq .faq-index-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
  }
  .page-faq .faq-index-list a {
    white-space: nowrap;
  }
  .page-faq .faq-index-list a::before {
    display: none;
  }
}