/* ===== FAQ 页面专属样式 ===== */
.page-faq {
  --faq-sidebar-w: 280px;
  --faq-nav-radius: var(--radius);
  background: var(--c-pale);
  color: var(--c-graphite);
  font-family: var(--font-body);
}

/* 页面首部 · 深蓝渐变 + 斜切过渡 */
.page-faq .faq-hero {
  position: relative;
  background: linear-gradient(135deg, var(--c-deep) 0%, var(--c-deep-2) 100%);
  padding: 56px 0 84px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -90px;
  top: -70px;
  width: 280px;
  height: 280px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  z-index: 1;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -20px;
  height: 56px;
  background: var(--c-pale);
  transform: skewY(-1.6deg);
  transform-origin: left bottom;
  z-index: 2;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 3;
}

.page-faq .faq-hero .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  margin-bottom: 28px;
}

.page-faq .faq-hero .breadcrumbs a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color var(--ease-out);
}

.page-faq .faq-hero .breadcrumbs a:hover {
  color: var(--c-orange);
}

.page-faq .faq-hero .breadcrumbs-sep {
  color: rgba(255, 255, 255, 0.35);
}

.page-faq .faq-hero .page-title {
  font-family: var(--font-heading);
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--c-white);
  margin: 0 0 18px;
  max-width: 760px;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero .page-description {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
  margin: 0;
}

/* 搜索框 · 静态展示 + 斜切视觉 */
.page-faq .faq-search {
  position: relative;
  max-width: 560px;
  margin-top: 34px;
  background: rgba(255, 255, 255, 0.1);
  border-left: 4px solid var(--c-orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  backdrop-filter: blur(8px);
  transform: skewX(-3deg);
  transition: background var(--ease-out), box-shadow var(--ease-out);
}

.page-faq .faq-search:focus-within {
  background: rgba(255, 255, 255, 0.16);
  box-shadow: 0 0 0 4px rgba(255, 90, 0, 0.22);
}

.page-faq .faq-search input {
  display: block;
  width: 100%;
  height: 56px;
  background: transparent;
  border: none;
  padding: 0 52px 0 22px;
  color: var(--c-white);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
  transform: skewX(3deg);
}

.page-faq .faq-search input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.page-faq .faq-search input::-webkit-search-cancel-button {
  -webkit-appearance: none;
}

.page-faq .faq-search-icon {
  position: absolute;
  right: 20px;
  top: 50%;
  width: 15px;
  height: 15px;
  border: 2px solid var(--c-orange);
  border-radius: 50%;
  transform: translateY(-50%) skewX(3deg);
  pointer-events: none;
}

.page-faq .faq-search-icon::after {
  content: "";
  position: absolute;
  width: 7px;
  height: 2px;
  background: var(--c-orange);
  border-radius: 2px;
  right: -5px;
  bottom: -3px;
  transform: rotate(-45deg);
}

/* FAQ 主体区 */
.page-faq .faq-body {
  background: var(--c-pale);
  padding: 56px 0 88px;
}

.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* 左栏 · 问题索引 */
.page-faq .faq-sidebar {
  position: relative;
  background: var(--c-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 26px 20px 20px;
  flex-shrink: 0;
}

.page-faq .faq-sidebar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  width: 52px;
  height: 4px;
  background: var(--c-orange);
  border-radius: 0 0 4px 4px;
}

.page-faq .faq-sidebar-header {
  border-bottom: 2px solid var(--c-line);
  padding-bottom: 16px;
  margin-bottom: 14px;
}

.page-faq .faq-sidebar-kicker {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-orange);
  text-transform: uppercase;
}

.page-faq .faq-sidebar-title {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 700;
  color: var(--c-deep);
  margin: 6px 0 0;
}

.page-faq .faq-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border-left: 4px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--c-graphite);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: background var(--ease-out), border-color var(--ease-out), color var(--ease-out);
}

.page-faq .faq-nav-link:hover,
.page-faq .faq-nav-link.is-active {
  background: var(--c-orange-light);
  border-left-color: var(--c-orange);
  color: var(--c-deep);
}

.page-faq .faq-nav-label {
  line-height: 1.3;
}

.page-faq .faq-nav-num {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-fog);
  white-space: nowrap;
  transition: color var(--ease-out);
}

.page-faq .faq-nav-link:hover .faq-nav-num,
.page-faq .faq-nav-link.is-active .faq-nav-num {
  color: var(--c-orange);
}

.page-faq .faq-sidebar-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-teal);
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-sidebar-status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-teal);
  flex-shrink: 0;
}

.page-faq .faq-sidebar-help {
  margin-top: 16px;
  padding: 18px 16px;
  background: var(--c-pale);
  border-radius: var(--radius);
  text-align: center;
}

.page-faq .faq-sidebar-help p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-graphite);
  margin: 0 0 12px;
}

.page-faq .faq-sidebar-help .btn {
  width: 100%;
  text-align: center;
}

/* 右栏 · 问答内容 */
.page-faq .faq-content {
  min-width: 0;
  flex: 1;
}

.page-faq .faq-overview {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 24px 28px;
  margin-bottom: 36px;
  border-left: 4px solid var(--c-orange);
}

.page-faq .faq-overview p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-graphite);
  margin: 0 0 20px;
}

.page-faq .faq-overview a,
.page-faq .faq-answer a {
  color: var(--c-orange);
  text-decoration: none;
  font-weight: 600;
  background-image: linear-gradient(to right, var(--c-orange), var(--c-orange));
  background-repeat: no-repeat;
  background-size: 0% 2px;
  background-position: 0 100%;
  transition: background-size var(--ease-out), color var(--ease-out);
}

.page-faq .faq-overview a:hover,
.page-faq .faq-answer a:hover {
  color: var(--c-deep);
  background-size: 100% 2px;
}

.page-faq .faq-overview-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-stat {
  text-align: center;
  padding: 8px 4px;
  background: var(--c-pale);
  border-radius: var(--radius);
}

.page-faq .faq-stat-value {
  display: block;
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 800;
  color: var(--c-deep);
  line-height: 1.1;
}

.page-faq .faq-stat-label {
  display: block;
  font-size: 12px;
  color: var(--c-fog);
  margin-top: 4px;
  letter-spacing: 0.04em;
}

/* 分类区块 */
.page-faq .faq-section {
  margin-bottom: 52px;
}

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

.page-faq .faq-section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding: 0 4px;
}

.page-faq .faq-section-num {
  font-family: var(--font-heading);
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-orange);
  opacity: 0.4;
}

.page-faq .faq-section-title {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 700;
  color: var(--c-deep);
  margin: 0;
  line-height: 1.2;
}

.page-faq .faq-section-title::after {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  background: var(--c-orange);
  margin-top: 6px;
}

/* 手风琴条目 */
.page-faq .faq-item {
  background: var(--c-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
  border-left: 4px solid transparent;
  overflow: hidden;
  transition: border-color var(--ease-out), box-shadow var(--ease-out), transform var(--ease-out);
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-orange);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.page-faq .faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 400;
  line-height: 1;
  color: var(--c-orange);
  flex-shrink: 0;
  transition: transform var(--ease-out);
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(45deg);
}

.page-faq .faq-q {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--c-deep);
  line-height: 1.4;
}

/* 答案区 */
.page-faq .faq-answer {
  padding: 0 24px 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-graphite);
}

.page-faq .faq-answer > p {
  margin: 0 0 14px;
}

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

.page-faq .faq-steps {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
}

.page-faq .faq-steps li {
  position: relative;
  padding: 8px 0 8px 32px;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-steps li:last-child {
  border-bottom: none;
}

.page-faq .faq-steps li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 16px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-orange);
  box-shadow: 0 0 0 3px var(--c-orange-light);
}

/* 联系列表 */
.page-faq .faq-contact-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 16px;
}

.page-faq .faq-contact-list li {
  position: relative;
  padding: 11px 0 11px 34px;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-contact-list li:last-child {
  border-bottom: none;
}

.page-faq .faq-contact-list li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 18px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-teal);
  box-shadow: 0 0 0 3px rgba(0, 163, 163, 0.14);
}

/* 示意图 */
.page-faq .faq-img {
  display: block;
  width: 700px;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin-top: 18px;
  box-shadow: var(--shadow-sm);
  background: var(--c-line);
}

/* 移动端增强 */
@media (max-width: 639px) {
  .page-faq .faq-hero {
    padding: 44px 0 72px;
  }

  .page-faq .faq-hero .page-title {
    font-size: 28px;
  }

  .page-faq .faq-hero .page-description {
    font-size: 15px;
  }

  .page-faq .faq-search {
    margin-top: 26px;
    transform: none;
  }

  .page-faq .faq-search input {
    transform: none;
  }

  .page-faq .faq-search-icon {
    transform: translateY(-50%);
  }

  .page-faq .faq-body {
    padding: 44px 0 64px;
  }

  .page-faq .faq-overview {
    padding: 20px;
  }

  .page-faq .faq-overview-stats {
    gap: 8px;
  }

  .page-faq .faq-stat-value {
    font-size: 22px;
  }

  .page-faq .faq-section-title {
    font-size: 21px;
  }

  .page-faq .faq-section-num {
    font-size: 28px;
  }

  .page-faq .faq-item summary {
    padding: 18px 18px;
  }

  .page-faq .faq-answer {
    padding: 0 18px 18px;
  }

  .page-faq .faq-q {
    font-size: 16px;
  }
}

/* 平板与桌面 */
@media (min-width: 640px) {
  .page-faq .faq-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .page-faq .faq-nav-link {
    white-space: nowrap;
    border-left: none;
    border-bottom: 3px solid transparent;
    border-radius: 0;
    padding: 10px 14px;
    font-size: 14px;
  }

  .page-faq .faq-nav-link:hover,
  .page-faq .faq-nav-link.is-active {
    background: var(--c-orange-light);
    border-bottom-color: var(--c-orange);
  }

  .page-faq .faq-nav-num {
    display: none;
  }

  .page-faq .faq-sidebar-status,
  .page-faq .faq-sidebar-help {
    display: none;
  }
}

@media (min-width: 992px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-sidebar-w) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: 100px;
  }

  .page-faq .faq-nav {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-faq .faq-nav-link {
    padding: 13px 14px;
    border-left: 4px solid transparent;
    border-bottom: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 15px;
  }

  .page-faq .faq-nav-link:hover,
  .page-faq .faq-nav-link.is-active {
    background: var(--c-orange-light);
    border-left-color: var(--c-orange);
    border-bottom-color: transparent;
  }

  .page-faq .faq-nav-num {
    display: inline;
  }

  .page-faq .faq-sidebar-status,
  .page-faq .faq-sidebar-help {
    display: flex;
  }

  .page-faq .faq-sidebar-help {
    display: block;
  }

  .page-faq .faq-q {
    font-size: 18px;
  }
}