/* ===== 页面专属样式：帮助中心 / page-faq ===== */
.page-faq {
  --faq-accent: #B14BFF;
  --faq-accent2: #29C5FF;
  --faq-danger: #FF2E88;
  --faq-panel-bg: #161B26;
  --faq-line: rgba(41, 197, 255, 0.2);
  --faq-line-strong: rgba(41, 197, 255, 0.45);
  --faq-glow: 0 0 32px rgba(177, 75, 255, 0.14);
  --faq-max: 1200px;
  background: var(--bg-ink);
  color: var(--paper);
  font-family: var(--font-body);
}

/* 面包屑 */
.page-faq .faq-breadcrumb {
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: 1.2rem 1.25rem 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.page-faq .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
  transition: color 0.2s;
}

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

.page-faq .breadcrumb-sep {
  margin: 0 0.45rem;
  color: var(--gray);
}

.page-faq .breadcrumb-current {
  color: var(--paper);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: 2.5rem 1.25rem 2.2rem;
  background:
    radial-gradient(ellipse at 10% 0%, rgba(177, 75, 255, 0.16), transparent 55%),
    radial-gradient(ellipse at 90% 100%, rgba(41, 197, 255, 0.1), transparent 60%),
    var(--bg-ink);
  border-bottom: 1px solid var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(41, 197, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(41, 197, 255, 0.05) 1px, transparent 1px);
  background-size: 34px 34px;
  transform: skewY(-0.8deg);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
}

.page-faq .faq-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--purple);
  margin-bottom: 1.1rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid rgba(177, 75, 255, 0.35);
  border-radius: 2px;
}

.page-faq .faq-hero-eyebrow::before {
  content: "▶";
  font-size: 0.5rem;
  color: var(--pink);
}

.page-faq .faq-hero-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.7rem, 5vw, 2.9rem);
  line-height: 1.22;
  letter-spacing: 0.01em;
  margin: 0 0 1.1rem;
  max-width: 18em;
}

.page-faq .faq-hero-title::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin-top: 1.1rem;
  background: linear-gradient(90deg, var(--purple), var(--blue), transparent);
}

.page-faq .faq-hero-desc {
  max-width: 54em;
  font-size: 0.93rem;
  line-height: 1.8;
  color: rgba(242, 230, 201, 0.75);
  margin-bottom: 2rem;
}

/* 在线搜索帮助面板 */
.page-faq .faq-search-panel {
  background: rgba(22, 27, 38, 0.72);
  border: 1px solid rgba(41, 197, 255, 0.16);
  border-radius: 2px;
  padding: 1.4rem 1.25rem 1.2rem;
  box-shadow: var(--faq-glow);
}

.page-faq .faq-search-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.page-faq .faq-search-title::before {
  content: "■";
  font-size: 0.55rem;
  color: var(--pink);
}

.page-faq .faq-search {
  margin-bottom: 1.2rem;
}

.page-faq .faq-search-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.4rem;
}

.page-faq .faq-search-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  border-bottom: 1px solid rgba(242, 230, 201, 0.14);
  padding-bottom: 0.35rem;
}

.page-faq .faq-search-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 0.35rem 0;
}

.page-faq .faq-search-input::placeholder {
  color: rgba(242, 230, 201, 0.3);
}

.page-faq .faq-search-key {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--gray);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.page-faq .faq-search-tip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.7;
  color: var(--gray);
  margin: 0.6rem 0 0;
}

/* 筛选按钮 */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .filter-btn {
  background: transparent;
  border: 1px solid rgba(41, 197, 255, 0.4);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  padding: 0.4rem 0.85rem;
  border-radius: 2px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s, box-shadow 0.2s;
}

.page-faq .filter-btn:hover {
  border-color: var(--purple);
  color: var(--purple);
}

.page-faq .filter-btn.is-active {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--bg-ink);
  font-weight: 500;
  box-shadow: 0 0 14px rgba(41, 197, 255, 0.25);
}

/* 通用区块容器 */
.page-faq .faq-section {
  padding: 3rem 1.25rem;
}

.page-faq .faq-sframe {
  max-width: var(--faq-max);
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid rgba(41, 197, 255, 0.12);
  border-radius: 2px;
  padding: 2rem 1.35rem;
  position: relative;
}

.page-faq .faq-section-desc {
  max-width: 48em;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(242, 230, 201, 0.7);
  margin: 0.9rem 0 2rem;
}

/* 问题分类 */
.page-faq .faq-cat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-faq .faq-cat-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  background: rgba(11, 14, 20, 0.6);
  border: 1px solid rgba(41, 197, 255, 0.14);
  border-left: 3px solid var(--blue);
  border-radius: 2px;
  padding: 1.15rem 1rem 1.15rem 1.1rem;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
}

.page-faq .faq-cat-card:hover {
  border-color: rgba(177, 75, 255, 0.5);
  border-left-color: var(--purple);
  box-shadow: 0 4px 24px rgba(177, 75, 255, 0.12);
  transform: translateY(-2px);
}

.page-faq .faq-cat-card:nth-child(2) {
  border-left-color: var(--purple);
}

.page-faq .faq-cat-card:nth-child(3) {
  border-left-color: var(--yellow);
}

.page-faq .faq-cat-card:nth-child(4) {
  border-left-color: var(--pink);
}

.page-faq .faq-cat-card:nth-child(2):hover {
  border-left-color: var(--purple);
}

.page-faq .faq-cat-card:nth-child(3):hover {
  border-left-color: var(--yellow);
}

.page-faq .faq-cat-card:nth-child(4):hover {
  border-left-color: var(--pink);
}

.page-faq .faq-cat-icon {
  width: 38px;
  height: 38px;
  color: var(--blue);
  flex-shrink: 0;
}

.page-faq .faq-cat-card:nth-child(2) .faq-cat-icon {
  color: var(--purple);
}

.page-faq .faq-cat-card:nth-child(3) .faq-cat-icon {
  color: var(--yellow);
}

.page-faq .faq-cat-card:nth-child(4) .faq-cat-icon {
  color: var(--pink);
}

.page-faq .faq-cat-body {
  min-width: 0;
}

.page-faq .faq-cat-name {
  font-family: var(--font-head);
  font-size: 1.12rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--paper);
}

.page-faq .faq-cat-text {
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(242, 230, 201, 0.72);
  margin: 0 0 0.65rem;
}

.page-faq .faq-cat-link {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--purple);
  text-decoration: none;
  border-bottom: 1px dotted rgba(177, 75, 255, 0.45);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}

.page-faq .faq-cat-link:hover {
  color: var(--pink);
  border-bottom-color: var(--pink);
}

.page-faq .faq-cat-code {
  position: absolute;
  top: 0.65rem;
  right: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--gray);
  letter-spacing: 0.12em;
}

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

.page-faq .faq-cat-figure img {
  display: block;
  width: 100%;
  max-width: 700px;
  height: auto;
  margin: 0 auto;
  border: 1px solid rgba(41, 197, 255, 0.2);
}

.page-faq .faq-cat-caption,
.page-faq .faq-guide-caption {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--gray);
  text-align: center;
  margin-top: 0.55rem;
  letter-spacing: 0.08em;
}

/* 四步流程 */
.page-faq .faq-step-strip {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 1.6rem 0 2rem;
  padding: 1rem 0.9rem;
  background:
    linear-gradient(90deg, rgba(177, 75, 255, 0.08) 0%, rgba(41, 197, 255, 0.06) 100%),
    rgba(11, 14, 20, 0.55);
  border: 1px solid rgba(41, 197, 255, 0.12);
  border-radius: 2px;
  overflow-x: auto;
  flex-wrap: nowrap;
}

.page-faq .faq-step-marker {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
}

.page-faq .faq-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--purple);
  color: var(--bg-ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  border-radius: 2px;
}

.page-faq .faq-step-marker:nth-child(3) .faq-step-num {
  background: var(--blue);
}

.page-faq .faq-step-marker:nth-child(5) .faq-step-num {
  background: var(--yellow);
}

.page-faq .faq-step-marker:nth-child(7) .faq-step-num {
  background: var(--pink);
}

.page-faq .faq-step-name {
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
}

.page-faq .faq-step-arrow {
  font-family: var(--font-mono);
  color: var(--gray);
  flex-shrink: 0;
  font-size: 0.85rem;
}

/* 手风琴 */
.page-faq .faq-acc-list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.page-faq .faq-acc-item {
  background: rgba(11, 14, 20, 0.65);
  border: 1px solid rgba(41, 197, 255, 0.14);
  border-radius: 2px;
  scroll-margin-top: 90px;
}

.page-faq .faq-acc-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: transparent;
  border: none;
  padding: 1rem 1.05rem;
  cursor: pointer;
  color: var(--paper);
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  transition: background 0.2s;
}

.page-faq .faq-acc-trigger:hover {
  background: rgba(177, 75, 255, 0.06);
}

.page-faq .faq-acc-tag {
  color: var(--paper);
}

.page-faq .faq-acc-code {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--gray);
  letter-spacing: 0.14em;
  margin-left: auto;
}

.page-faq .faq-acc-toggle {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--blue);
  transition: transform 0.25s;
}

.page-faq .faq-acc-trigger[aria-expanded="true"] .faq-acc-toggle {
  transform: rotate(45deg);
  color: var(--pink);
}

.page-faq .faq-acc-panel {
  border-top: 1px solid rgba(41, 197, 255, 0.1);
  padding: 0.2rem 1.05rem 1.05rem;
}

.page-faq .faq-acc-trigger[aria-expanded="false"] + .faq-acc-panel,
.page-faq .faq-acc-trigger:not([data-open]) + .faq-acc-panel {
  display: none;
}

/* 步骤列表（手术清单式） */
.page-faq .faq-step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 1rem;
  padding: 1rem 0 0;
  position: relative;
}

.page-faq .faq-step + .faq-step::before {
  content: "";
  position: absolute;
  left: 0.42rem;
  top: 0;
  width: 1px;
  height: 1.6rem;
  background: rgba(41, 197, 255, 0.14);
}

.page-faq .faq-step-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--purple);
  border-left: 2px solid var(--purple);
  padding-left: 0.55rem;
  line-height: 1.6;
  white-space: nowrap;
  height: max-content;
}

.page-faq .faq-step:nth-child(2) .faq-step-label {
  color: var(--blue);
  border-left-color: var(--blue);
}

.page-faq .faq-step:nth-child(3) .faq-step-label {
  color: var(--yellow);
  border-left-color: var(--yellow);
}

.page-faq .faq-step:nth-child(4) .faq-step-label {
  color: var(--pink);
  border-left-color: var(--pink);
}

.page-faq .faq-step-body p {
  font-size: 0.84rem;
  line-height: 1.8;
  color: rgba(242, 230, 201, 0.75);
  margin: 0 0 0.5rem;
}

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

/* 检索功能帮助 */
.page-faq .faq-guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 1.8rem;
}

.page-faq .faq-guide-card {
  background: rgba(11, 14, 20, 0.5);
  border-left: 3px solid var(--blue);
  border-radius: 2px;
  padding: 1.2rem 1.15rem;
}

.page-faq .faq-guide-card:nth-child(2) {
  border-left-color: var(--purple);
}

.page-faq .faq-guide-card-title {
  font-family: var(--font-head);
  font-size: 1.06rem;
  font-weight: 700;
  margin: 0 0 0.8rem;
  color: var(--paper);
}

.page-faq .faq-guide-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-faq .faq-guide-list li {
  font-size: 0.84rem;
  line-height: 1.75;
  color: rgba(242, 230, 201, 0.75);
  padding-left: 1.1rem;
  position: relative;
}

.page-faq .faq-guide-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.page-faq .faq-guide-card:nth-child(2) .faq-guide-list li::before {
  color: var(--purple);
}

.page-faq .faq-guide-figure {
  margin: 0 0 1.8rem;
}

.page-faq .faq-guide-figure img {
  display: block;
  width: 100%;
  max-width: 760px;
  height: auto;
  margin: 0 auto;
  border: 1px solid rgba(41, 197, 255, 0.2);
}

.page-faq .faq-guide-more {
  font-size: 0.84rem;
  line-height: 1.8;
  color: rgba(242, 230, 201, 0.7);
  padding: 0.95rem 1.15rem;
  background: rgba(177, 75, 255, 0.06);
  border-left: 3px solid var(--purple);
  border-radius: 2px;
}

.page-faq .faq-guide-more a {
  color: var(--purple);
  text-decoration: none;
  border-bottom: 1px dotted rgba(177, 75, 255, 0.5);
  transition: color 0.2s;
}

.page-faq .faq-guide-more a:hover {
  color: var(--pink);
  border-bottom-color: var(--pink);
}

/* 联系支持 */
.page-faq .faq-support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-faq .faq-support-cell {
  background: rgba(11, 14, 20, 0.5);
  border: 1px solid rgba(41, 197, 255, 0.12);
  border-top: 3px solid var(--pink);
  border-radius: 2px;
  padding: 1.25rem 1.15rem;
}

.page-faq .faq-support-cell:nth-child(2) {
  border-top-color: var(--blue);
}

.page-faq .faq-support-cell:nth-child(3) {
  border-top-color: var(--yellow);
}

.page-faq .faq-support-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.45rem;
}

.page-faq .faq-support-value {
  display: block;
  font-family: var(--font-head);
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--paper);
  margin-bottom: 0.55rem;
  word-break: break-all;
}

.page-faq .faq-support-cell:first-child .faq-support-value {
  color: var(--pink);
}

.page-faq .faq-support-cell:nth-child(2) .faq-support-value {
  color: var(--blue);
}

.page-faq .faq-support-cell:nth-child(3) .faq-support-value {
  color: var(--yellow);
}

.page-faq .faq-support-note {
  font-size: 0.78rem;
  line-height: 1.7;
  color: rgba(242, 230, 201, 0.6);
  margin: 0;
}

/* 支持区操作按钮 */
.page-faq .faq-support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 1.7rem;
}

.page-faq .faq-support-actions .btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.65rem 1.3rem;
  border-radius: 2px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.page-faq .btn--primary {
  background: var(--purple);
  color: var(--bg-ink);
  border: 1px solid var(--purple);
}

.page-faq .btn--primary:hover {
  background: transparent;
  color: var(--purple);
}

.page-faq .btn--ghost {
  background: transparent;
  color: var(--blue);
  border: 1px solid rgba(41, 197, 255, 0.4);
}

.page-faq .btn--ghost:hover {
  border-color: var(--blue);
  background: rgba(41, 197, 255, 0.08);
}

.page-faq .faq-support-trust {
  max-width: 46em;
  font-size: 0.78rem;
  line-height: 1.75;
  color: var(--gray);
  border-top: 1px solid rgba(41, 197, 255, 0.12);
  padding-top: 1.1rem;
  margin: 0;
}

/* 平板及以上 */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 3.5rem 2rem 2.8rem;
  }

  .page-faq .faq-hero-inner {
    max-width: 960px;
  }

  .page-faq .faq-section {
    padding: 4rem 2rem;
  }

  .page-faq .faq-sframe {
    padding: 2.4rem 2rem;
  }

  .page-faq .faq-cat-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
  }

  .page-faq .faq-cat-card {
    padding: 1.25rem 1.1rem;
  }

  .page-faq .faq-guide-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
  }

  .page-faq .faq-support-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.1rem;
  }

  .page-faq .faq-step {
    gap: 1.2rem;
  }
}

/* 桌面端 */
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding-top: 4.2rem;
  }

  .page-faq .faq-hero-inner {
    max-width: 1000px;
  }

  .page-faq .faq-hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
  }

  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .faq-cat-card {
    grid-template-columns: 1fr;
    gap: 0.7rem;
    align-content: start;
    min-height: 230px;
  }

  .page-faq .faq-cat-name {
    margin-top: 0.2rem;
  }

  .page-faq .faq-cat-text {
    font-size: 0.8rem;
  }

  .page-faq .faq-step-strip {
    padding: 1.1rem 1.2rem;
  }

  .page-faq .faq-guide-grid {
    gap: 1.4rem;
  }
}