/* ========== FAQ 页面专属样式 ========== */
.page-faq {
  background: linear-gradient(180deg, #F9F6EC 0%, #FFFFFF 38%);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.6;
  padding-top: 1rem;
}

/* ---- 顶部 Hero ---- */
.page-faq__hero {
  position: relative;
  background: var(--color-navy);
  color: var(--color-white);
  padding: 2.5rem 0 2rem;
  margin-top: 1rem;
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold) 0 15%, rgba(212, 177, 6, 0.32) 15% 100%);
}

.page-faq__hero-inner {
  display: grid;
  gap: 1.5rem;
}

.page-faq__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-gold);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

.page-faq__kicker::before {
  content: "";
  width: 1.4rem;
  height: 2px;
  background: var(--color-gold);
}

.page-faq__hero-copy h1 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  line-height: 1.25;
  margin: 0 0 0.85rem;
  color: var(--color-white);
}

.page-faq__lead {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1rem;
  line-height: 1.75;
  margin: 0;
  max-width: 46rem;
}

.page-faq__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.75rem;
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
}

.page-faq__fact {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.page-faq__fact strong {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  line-height: 1;
  color: var(--color-gold);
}

.page-faq__fact span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
}

.page-faq__hero-search {
  align-self: end;
}

.page-faq__search-box {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(212, 177, 6, 0.42);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  color: rgba(255, 255, 255, 0.55);
}

.page-faq__search-icon {
  flex: 0 0 auto;
  opacity: 0.8;
}

.page-faq__search-fake {
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.page-faq__search-tip {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.48);
  margin: 0.5rem 0 0;
  line-height: 1.5;
}

.page-faq__hero-media {
  margin-top: 1.5rem;
  border: 1px solid rgba(212, 177, 6, 0.35);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 200px;
  background: var(--color-deep-blue);
}

.page-faq__hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---- 中部目录与问答布局 ---- */
.page-faq__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 2rem 0 3rem;
}

.page-faq__aside {
  background: var(--color-white);
  border: 1px solid var(--color-pale-gold);
  border-top: 3px solid var(--color-gold);
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 10px rgba(10, 31, 68, 0.04);
}

.page-faq__aside-title {
  margin: 0;
  padding: 0.85rem 1rem 0.6rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--color-navy);
  border-bottom: 1px solid rgba(241, 230, 163, 0.5);
}

.page-faq__aside-list {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  list-style: none;
  margin: 0;
  padding: 0.5rem 0.75rem 1rem;
}

.page-faq__aside-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
  padding: 0.5rem 0.85rem;
  background: var(--color-white);
  border: 1px solid var(--color-pale-gold);
  border-radius: 999px;
  color: var(--color-deep-blue);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.page-faq__aside-count {
  font-size: 0.75rem;
  color: var(--color-slate);
  font-weight: 400;
}

.page-faq__aside-link:hover,
.page-faq__aside-link:focus-visible {
  background: #F8F4E5;
  border-color: var(--color-gold);
  color: var(--color-navy);
}

.page-faq__aside-foot {
  display: none;
}

/* 默认高亮第一个分类 */
.page-faq__aside-link[href="#faq-download"] {
  border-left-color: transparent;
  background: #F8F4E5;
}

/* 当页面定位到其他分类时，移动高亮 */
.page-faq:has(#faq-install:target) .page-faq__aside-link[href="#faq-download"],
.page-faq:has(#faq-history:target) .page-faq__aside-link[href="#faq-download"],
.page-faq:has(#faq-account:target) .page-faq__aside-link[href="#faq-download"] {
  background: var(--color-white);
}

.page-faq:has(#faq-install:target) .page-faq__aside-link[href="#faq-install"],
.page-faq:has(#faq-history:target) .page-faq__aside-link[href="#faq-history"],
.page-faq:has(#faq-account:target) .page-faq__aside-link[href="#faq-account"] {
  background: #F8F4E5;
  border-color: var(--color-gold);
  color: var(--color-navy);
}

.page-faq__main {
  min-width: 0;
}

/* ---- 问答分区 ---- */
.page-faq__section {
  scroll-margin-top: calc(var(--header-height) + 1rem);
  margin-bottom: 2.5rem;
  transition: outline-color var(--transition-fast);
}

.page-faq__section:target {
  outline: 2px solid rgba(212, 177, 6, 0.32);
  outline-offset: 0.6rem;
  border-radius: var(--radius-sm);
}

.page-faq__section-head {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(212, 177, 6, 0.35);
}

.page-faq__section-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 2.4rem;
  height: 2.4rem;
  background: var(--color-navy);
  color: var(--color-gold);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  clip-path: polygon(0 0, 100% 0, 100% 78%, 46% 100%, 0 78%);
}

.page-faq__section-head h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  line-height: 1.2;
  margin: 0;
  color: var(--color-navy);
}

.page-faq__section-sub {
  margin: 0.15rem 0 0;
  font-size: 0.82rem;
  color: var(--color-slate);
}

/* ---- FAQ 折叠项 ---- */
.page-faq__item {
  background: var(--color-white);
  border: 1px solid rgba(230, 224, 205, 0.9);
  border-left: 3px solid var(--color-gold);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  transition: box-shadow var(--transition-base);
}

.page-faq__item[open] {
  box-shadow: 0 6px 18px rgba(10, 31, 68, 0.08);
}

.page-faq__item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem 1.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-navy);
  cursor: pointer;
}

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

.page-faq__item summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid var(--color-gold);
  border-radius: 50%;
  color: var(--color-gold);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1;
  transition: transform var(--transition-base), background var(--transition-base), color var(--transition-base);
}

.page-faq__item[open] summary::before {
  transform: rotate(45deg);
  background: var(--color-gold);
  color: var(--color-white);
}

.page-faq__item summary:hover {
  color: var(--color-deep-blue);
}

.page-faq__item summary:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.page-faq__item-title {
  flex: 1;
  min-width: 0;
}

.page-faq__answer {
  padding: 0.2rem 1.25rem 1.1rem 2.8rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: #3D4148;
}

.page-faq__answer p {
  margin: 0.55rem 0;
}

.page-faq__answer a {
  color: var(--color-deep-blue);
  font-weight: 600;
  text-decoration-color: var(--color-gold);
  text-underline-offset: 2px;
}

.page-faq__steps {
  margin: 0.5rem 0 0.5rem 1.1rem;
  padding-left: 0.25rem;
}

.page-faq__steps li {
  margin-bottom: 0.35rem;
}

.page-faq__note {
  margin-top: 0.8rem;
  padding: 0.6rem 0.8rem;
  background: #FDF5F5;
  border-left: 2px solid var(--color-red);
  color: #7A2E34;
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ---- 底部联系引导 ---- */
.page-faq__contact {
  position: relative;
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.88);
  padding: 3rem 0 3.5rem;
  margin-top: 1rem;
}

.page-faq__contact::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold) 0 25%, rgba(212, 177, 6, 0.25) 25% 100%);
}

.page-faq__contact-inner {
  display: grid;
  gap: 1.5rem;
}

.page-faq__contact-copy h2 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  line-height: 1.25;
  margin: 0 0 0.75rem;
  color: var(--color-white);
}

.page-faq__contact-copy > p {
  color: rgba(255, 255, 255, 0.72);
  margin: 0 0 1rem;
  max-width: 34rem;
}

.page-faq__contact-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}

.page-faq__contact-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-faq__contact-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--color-gold);
  transform: rotate(45deg);
}

.page-faq__contact-copy .btn {
  margin-top: 0.5rem;
}

.page-faq__contact-media {
  border: 1px solid rgba(212, 177, 6, 0.35);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 160px;
  align-self: center;
}

.page-faq__contact-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---- 响应式增强：平板与桌面 ---- */
@media (min-width: 768px) {
  .page-faq__hero {
    padding: 3rem 0 2.5rem;
  }

  .page-faq__hero-inner {
    grid-template-columns: 1.5fr 0.9fr;
    gap: 2rem;
    align-items: end;
  }

  .page-faq__hero-copy h1 {
    font-size: 2.1rem;
  }

  .page-faq__hero-media {
    height: 260px;
    margin-top: 2.25rem;
  }

  .page-faq__contact-inner {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
  }

  .page-faq__contact-media {
    height: 200px;
  }

  .page-faq__contact-copy h2 {
    font-size: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-faq__layout {
    grid-template-columns: 250px 1fr;
    gap: 3rem;
    align-items: start;
    padding: 2.5rem 0 4rem;
  }

  .page-faq__aside {
    position: sticky;
    top: calc(var(--header-height) + 1.25rem);
  }

  .page-faq__aside-list {
    display: block;
    overflow: visible;
    padding: 0.5rem 0.75rem 1rem;
  }

  .page-faq__aside-link {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    white-space: normal;
    padding: 0.6rem 0.7rem;
    background: transparent;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.92rem;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  }

  .page-faq__aside-link:hover,
  .page-faq__aside-link:focus-visible {
    background: #F8F4E5;
    border-left-color: var(--color-gold);
    color: var(--color-navy);
  }

  .page-faq__aside-link[href="#faq-download"] {
    border-left-color: var(--color-gold);
    background: #F8F4E5;
  }

  .page-faq:has(#faq-install:target) .page-faq__aside-link[href="#faq-download"],
  .page-faq:has(#faq-history:target) .page-faq__aside-link[href="#faq-download"],
  .page-faq:has(#faq-account:target) .page-faq__aside-link[href="#faq-download"] {
    border-left-color: transparent;
    background: transparent;
  }

  .page-faq:has(#faq-install:target) .page-faq__aside-link[href="#faq-install"],
  .page-faq:has(#faq-history:target) .page-faq__aside-link[href="#faq-history"],
  .page-faq:has(#faq-account:target) .page-faq__aside-link[href="#faq-account"] {
    border-left-color: var(--color-gold);
    background: #F8F4E5;
  }

  .page-faq__aside-count {
    font-size: 0.78rem;
  }

  .page-faq__aside-foot {
    display: block;
    padding: 0.9rem 1rem 1.1rem;
    border-top: 1px dashed rgba(212, 177, 6, 0.45);
  }

  .page-faq__aside-foot p {
    margin: 0 0 0.4rem;
    color: var(--color-slate);
  }

  .page-faq__aside-more {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-deep-blue);
    text-decoration: none;
    border-bottom: 1px solid var(--color-gold);
    padding-bottom: 1px;
  }

  .page-faq__hero-media {
    height: 300px;
  }

  .page-faq__section-head h2 {
    font-size: 1.55rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq__item,
  .page-faq__item summary::before,
  .page-faq__aside-link {
    transition: none;
  }
}