.page-faq {
  --faq-line: rgba(138, 153, 174, 0.22);
  --faq-step-bg: rgba(10, 17, 40, 0.45);
  --faq-glow: rgba(42, 255, 104, 0.12);
}

/* ========== 顶部帮助中心入口区 ========== */
.page-faq .faq-hero {
  position: relative;
  padding: 44px 0 60px;
  background: var(--c-deep);
  overflow: hidden;
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -12%;
  width: 64%;
  height: 140%;
  background: linear-gradient(115deg, rgba(230, 57, 70, 0.2) 0%, rgba(230, 57, 70, 0.03) 45%, rgba(42, 255, 104, 0.12) 100%);
  transform: skewX(-8deg);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--c-red) 0 48px, var(--c-deep) 48px 72px, var(--c-green) 72px 96px, var(--c-deep) 96px 120px);
  opacity: 0.75;
  pointer-events: none;
}
.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 36px;
  align-items: center;
}
.page-faq .faq-hero-copy {
  min-width: 0;
}
.page-faq .faq-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-metal);
  margin-bottom: 20px;
}
.page-faq .faq-hero .breadcrumb a {
  color: var(--c-silver);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--c-green);
}
.page-faq .faq-hero-kicker {
  font-family: var(--font-sub);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-green);
  margin: 0 0 10px;
}
.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(40px, 8vw, 72px);
  line-height: 0.96;
  letter-spacing: -0.01em;
  color: var(--c-white);
  margin: 0 0 18px;
}
.page-faq .faq-hero-desc {
  max-width: 560px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-silver);
  margin: 0 0 26px;
}
.page-faq .faq-search {
  display: flex;
  align-items: stretch;
  max-width: 560px;
  border-radius: var(--r-full);
  background: var(--c-space);
  border: 1px solid var(--c-green);
  box-shadow: 0 0 0 3px var(--faq-glow);
  transition: box-shadow 0.25s var(--ease);
}
.page-faq .faq-search:focus-within {
  box-shadow: 0 0 0 5px rgba(42, 255, 104, 0.2);
}
.page-faq .faq-search-prefix {
  display: flex;
  align-items: center;
  padding-left: 18px;
  color: var(--c-metal);
  font-size: 18px;
}
.page-faq .faq-search input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  padding: 14px 12px 14px 8px;
  color: var(--c-white);
  font-family: var(--font-body);
  font-size: 14px;
}
.page-faq .faq-search input::placeholder {
  color: rgba(141, 153, 174, 0.7);
}
.page-faq .faq-search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 26px;
  border-radius: 0 999px 999px 0;
  background: var(--c-red);
  color: var(--c-white);
  font-family: var(--font-sub);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.page-faq .faq-search-btn:hover {
  background: var(--c-green);
  color: var(--c-space);
}

/* ========== 热门问题标签 ========== */
.page-faq .faq-hot {
  margin-top: 22px;
}
.page-faq .faq-hot-title {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-metal);
  margin-bottom: 10px;
}
.page-faq .faq-hot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .faq-hot .pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--r-full);
  border: 1px solid var(--faq-line);
  background: var(--c-space);
  color: var(--c-silver);
  font-size: 13px;
  font-family: var(--font-sub);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s var(--ease);
}
.page-faq .faq-hot .pill:hover {
  border-color: var(--c-green);
  color: var(--c-white);
  transform: translateY(-2px);
}
.page-faq .faq-hot .pill-yellow {
  border-color: rgba(255, 209, 102, 0.45);
  color: var(--c-yellow);
}
.page-faq .faq-hot .pill-green {
  border-color: rgba(42, 255, 104, 0.45);
  color: var(--c-green);
}

/* ========== 首屏数据条 ========== */
.page-faq .faq-hero-stats {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 30px;
  padding: 16px 22px;
  max-width: 560px;
  background: rgba(10, 17, 40, 0.7);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  justify-content: space-between;
}
.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--c-green);
  line-height: 1.2;
}
.page-faq .faq-stat-label {
  font-size: 12px;
  color: var(--c-metal);
  letter-spacing: 0.06em;
}
.page-faq .faq-stat-divider {
  width: 1px;
  height: 32px;
  background: var(--faq-line);
}

/* ========== 首屏插画 ========== */
.page-faq .faq-hero-visual {
  position: relative;
  padding: 10px 0;
}
.page-faq .faq-hero-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  border-radius: var(--r-lg);
  border: 1px solid var(--faq-line);
  box-shadow: var(--shadow-card);
  transform: rotate(-1deg);
}
.page-faq .faq-hero-visual::before {
  content: "";
  position: absolute;
  inset: 16px 8px 0;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--c-red) 0%, rgba(230, 57, 70, 0.2) 38%, var(--c-green) 100%);
  opacity: 0.16;
  transform: rotate(3deg);
  pointer-events: none;
}
.page-faq .faq-hero-visual::after {
  content: "";
  position: absolute;
  top: -10px;
  right: 2px;
  width: 52px;
  height: 52px;
  border-radius: var(--r-full);
  border: 2px solid var(--c-green);
  opacity: 0.55;
  box-shadow: 0 0 24px rgba(42, 255, 104, 0.25);
  pointer-events: none;
}

/* ========== FAQ 主区域 ========== */
.page-faq .faq-desk {
  background:
    linear-gradient(rgba(138, 153, 174, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(138, 153, 174, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  padding: 56px 0 72px;
}
.page-faq .faq-desk-grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

/* ========== 左侧索引 ========== */
.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 14px;
  background: var(--c-deep);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
}
.page-faq .faq-index-title {
  flex: 0 0 100%;
  font-family: var(--font-sub);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-metal);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: 2px;
}
.page-faq .faq-index-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 1 1 calc(50% - 8px);
  min-width: 128px;
  padding: 11px 14px;
  border-radius: var(--r-md);
  background: transparent;
  border: 1px solid var(--faq-line);
  color: var(--c-silver);
  text-decoration: none;
  font-family: var(--font-sub);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s var(--ease);
}
.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-red);
  line-height: 1;
}
.page-faq .faq-index-item:hover {
  border-color: var(--c-green);
  color: var(--c-white);
  transform: translateX(2px);
}
.page-faq .faq-index-item.is-active {
  background: var(--c-red);
  border-color: var(--c-red);
  color: var(--c-white);
  box-shadow: 0 10px 24px rgba(230, 57, 70, 0.28);
}
.page-faq .faq-index-item.is-active .faq-index-num {
  color: var(--c-white);
}
.page-faq .faq-suggest {
  flex: 0 0 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line);
}
.page-faq .faq-suggest-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-metal);
}
.page-faq .faq-suggest .link-underline {
  color: var(--c-silver);
  text-decoration: none;
  font-size: 13px;
  position: relative;
  width: fit-content;
  transition: color 0.2s var(--ease);
}
.page-faq .faq-suggest .link-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--c-green);
  transition: width 0.25s var(--ease);
}
.page-faq .faq-suggest .link-underline:hover {
  color: var(--c-white);
}
.page-faq .faq-suggest .link-underline:hover::after {
  width: 100%;
}

/* ========== 右侧问答组 ========== */
.page-faq .faq-groups {
  min-width: 0;
}
.page-faq .faq-group {
  scroll-margin-top: 120px;
}
.page-faq .faq-group + .faq-group {
  margin-top: 56px;
  padding-top: 48px;
  border-top: 1px solid var(--faq-line);
  position: relative;
}
.page-faq .faq-group + .faq-group::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 140px;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--c-red) 0 55%, var(--c-green) 55% 100%);
}
.page-faq .faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px 18px;
  margin-bottom: 20px;
  padding-left: 14px;
  border-left: 4px solid var(--c-red);
}
.page-faq .faq-group-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-red);
  margin-bottom: 6px;
  text-transform: uppercase;
}
.page-faq .faq-group-head h2 {
  font-family: var(--font-head);
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1;
  color: var(--c-white);
  margin: 0 0 8px;
}
.page-faq .faq-group-head p {
  max-width: 520px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-silver);
  margin: 0;
}
.page-faq .faq-group-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--r-full);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-green);
  background: var(--faq-glow);
  border: 1px solid rgba(42, 255, 104, 0.25);
  white-space: nowrap;
}

/* ========== 手风琴条目 ========== */
.page-faq .faq-item {
  display: block;
  background: var(--c-deep);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-bottom: 12px;
  scroll-margin-top: 120px;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.page-faq .faq-item:hover {
  border-color: rgba(138, 153, 174, 0.42);
}
.page-faq .faq-item[open] {
  border-color: rgba(230, 57, 70, 0.55);
  box-shadow: 0 14px 30px rgba(3, 8, 20, 0.32);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 18px;
  cursor: pointer;
  list-style: none;
  background: transparent;
  transition: background 0.2s var(--ease);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:hover {
  background: rgba(10, 17, 40, 0.32);
}
.page-faq .faq-q-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--c-red);
  border: 1px solid rgba(230, 57, 70, 0.5);
  border-radius: 6px;
  padding: 3px 6px;
  line-height: 1.2;
  transition: all 0.2s var(--ease);
}
.page-faq .faq-item[open] .faq-q-num {
  background: var(--c-red);
  color: var(--c-white);
}
.page-faq .faq-q-text {
  flex: 1;
  font-family: var(--font-sub);
  font-size: 16px;
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.4;
}
.page-faq .faq-q-icon {
  flex: 0 0 26px;
  position: relative;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--c-metal);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.page-faq .faq-q-icon::before,
.page-faq .faq-q-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-green);
  transform: translate(-50%, -50%);
  transition: background 0.2s var(--ease);
}
.page-faq .faq-q-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}
.page-faq .faq-item[open] .faq-q-icon {
  background: var(--c-red);
  border-color: var(--c-red);
  transform: rotate(180deg);
}
.page-faq .faq-item[open] .faq-q-icon::before {
  background: var(--c-white);
}
.page-faq .faq-item[open] .faq-q-icon::after {
  background: var(--c-white);
  transform: translate(-50%, -50%) rotate(0deg);
}

/* ========== 答案内容 ========== */
.page-faq .faq-a {
  padding: 20px 22px 22px;
  background: rgba(10, 17, 40, 0.38);
  border-top: 1px solid var(--faq-line);
  color: var(--c-silver);
  font-size: 14.5px;
  line-height: 1.8;
}
.page-faq .faq-a p {
  margin: 0 0 14px;
}
.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faq-step;
  margin: 16px 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-steps li {
  counter-increment: faq-step;
  position: relative;
  padding: 12px 16px 12px 48px;
  background: var(--faq-step-bg);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  color: var(--c-silver);
  line-height: 1.7;
  font-size: 14px;
}
.page-faq .faq-steps li::before {
  content: counter(faq-step);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--c-red);
  color: var(--c-white);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 22px;
  text-align: center;
}
.page-faq .faq-list {
  list-style: none;
  margin: 14px 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-faq .faq-list li {
  position: relative;
  padding-left: 26px;
  color: var(--c-silver);
  line-height: 1.7;
}
.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 0 3px var(--faq-glow);
}
.page-faq .faq-keyword {
  color: var(--c-green);
  background: var(--faq-glow);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}
.page-faq .faq-link {
  color: var(--c-green);
  text-decoration: none;
  border-bottom: 1px solid rgba(42, 255, 104, 0.4);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
  word-break: break-all;
}
.page-faq .faq-link:hover {
  color: var(--c-white);
  border-bottom-color: var(--c-white);
}
.page-faq .faq-inline-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 18px 0 6px;
  border-radius: var(--r-md);
  border: 1px solid var(--faq-line);
  box-shadow: var(--shadow-card);
  object-fit: cover;
}

/* ========== 底部联系引导 ========== */
.page-faq .faq-cta {
  padding: 52px 0 60px;
  background: linear-gradient(100deg, var(--c-deep) 0%, var(--c-space) 70%);
  border-top: 1px solid var(--faq-line);
}
.page-faq .faq-cta-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.page-faq .faq-cta-copy {
  flex: 1 1 320px;
  min-width: 0;
}
.page-faq .faq-cta-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-red);
  margin: 0 0 8px;
  text-transform: uppercase;
}
.page-faq .faq-cta h2 {
  font-family: var(--font-head);
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.1;
  color: var(--c-white);
  margin: 0 0 10px;
}
.page-faq .faq-cta-copy p {
  max-width: 520px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-silver);
  margin: 0;
}
.page-faq .faq-cta-action {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-faq .faq-cta .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: var(--r-full);
  font-family: var(--font-sub);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.2s var(--ease);
}
.page-faq .faq-cta .btn-red {
  background: var(--c-red);
  color: var(--c-white);
}
.page-faq .faq-cta .btn-red:hover {
  background: var(--c-green);
  color: var(--c-space);
}
.page-faq .faq-cta .btn-ghost {
  border: 1px solid var(--faq-line);
  color: var(--c-silver);
}
.page-faq .faq-cta .btn-ghost:hover {
  border-color: var(--c-green);
  color: var(--c-white);
}

.page-faq [id^="faq-"] {
  scroll-margin-top: 100px;
}

/* ========== 桌面端布局 ========== */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 64px 0 80px;
  }
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 52px;
  }
  .page-faq .faq-hero h1 {
    font-size: clamp(56px, 7vw, 84px);
  }
  .page-faq .faq-hero-visual {
    padding: 0;
  }

  .page-faq .faq-desk {
    padding: 72px 0 88px;
  }
  .page-faq .faq-desk-grid {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 48px;
  }
  .page-faq .faq-index {
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 110px;
    padding: 22px 16px;
  }
  .page-faq .faq-index-item {
    flex: 0 0 auto;
    width: 100%;
    min-width: 0;
  }
  .page-faq .faq-index-title {
    font-size: 13px;
  }
  .page-faq .faq-group-head h2 {
    font-size: 40px;
  }
  .page-faq .faq-a {
    padding: 22px 26px 24px;
  }
  .page-faq .faq-inline-img {
    max-width: 720px;
  }
  .page-faq .faq-cta {
    padding: 64px 0 72px;
  }
}