.page-faq {
  --faq-aside-w: 236px;
  --faq-answer-pad: 22px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding-block: 22px 4px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 30px;
  padding-block: 20px clamp(46px, 7vw, 84px);
  position: relative;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: -6%;
  top: 18%;
  width: 62%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-soft), transparent);
  transform: rotate(-7deg);
  pointer-events: none;
}

.page-faq .faq-hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.95rem, 6.2vw, 3.55rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 16px 0 0;
  color: var(--ink);
  max-width: 20ch;
}

.page-faq .faq-hero-copy .lede {
  margin-top: 18px;
  max-width: 54ch;
  color: var(--muted);
  font-size: clamp(0.95rem, 2.3vw, 1.06rem);
  line-height: 1.8;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero-media {
  position: relative;
}

.page-faq .faq-hero-media .media-frame {
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, 0.85);
}

.page-faq .faq-hero-media .media-img,
.page-faq .faq-hero-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 问题区 ---------- */
.page-faq .faq-questions-section {
  padding-block: clamp(34px, 6vw, 72px);
}

.page-faq .faq-section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.8vw, 2.15rem);
  line-height: 1.25;
  margin: 0 0 18px;
  color: var(--ink);
}

.page-faq .faq-section-title::after {
  content: "";
  display: block;
  width: 58px;
  height: 3px;
  margin-top: 14px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-faq .faq-filter-bar {
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-faq .faq-layout {
  display: grid;
  gap: 34px;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-aside-nav {
  border: 1px solid var(--line-faint);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(21, 36, 64, 0.62), rgba(14, 26, 48, 0.42));
  padding: 18px;
}

.page-faq .faq-aside-nav > .label {
  display: block;
  margin-bottom: 12px;
}

.page-faq .faq-aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-aside-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.page-faq .faq-aside-list a .num {
  font-size: 0.82rem;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-faq .faq-aside-list a:hover,
.page-faq .faq-aside-list a:focus-visible {
  color: var(--ink);
  border-color: rgba(38, 242, 208, 0.4);
  background: rgba(38, 242, 208, 0.08);
  outline: none;
}

/* ---------- 问题条目 ---------- */
.page-faq .faq-topic {
  scroll-margin-top: 92px;
}

.page-faq .faq-topic + .faq-topic {
  margin-top: clamp(38px, 6vw, 68px);
}

.page-faq .faq-topic-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  column-gap: 13px;
  row-gap: 4px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-faint);
  margin-bottom: 20px;
}

.page-faq .faq-topic-num {
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  line-height: 1;
  color: var(--cyan);
  opacity: 0.85;
}

.page-faq .faq-topic-head h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 3.2vw, 1.6rem);
  line-height: 1.3;
  margin: 0;
  color: var(--ink);
}

.page-faq .faq-topic-desc {
  grid-column: 2 / -1;
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

.page-faq .faq-item {
  border: 1px solid var(--line-faint);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(21, 36, 64, 0.7), rgba(14, 26, 48, 0.5));
  overflow: hidden;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-faq .faq-item + .faq-item {
  margin-top: 12px;
}

.page-faq .faq-item:hover {
  border-color: var(--line);
}

.page-faq .faq-item[open] {
  border-color: rgba(38, 242, 208, 0.42);
  background: linear-gradient(180deg, rgba(21, 36, 64, 0.92), rgba(14, 26, 48, 0.7));
}

.page-faq .faq-question {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px var(--faq-answer-pad);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-question:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .faq-num {
  font-size: clamp(1.5rem, 4vw, 2.05rem);
  line-height: 0.95;
  color: var(--line);
  transition: color 0.25s ease;
}

.page-faq .faq-item[open] .faq-num {
  color: var(--cyan);
}

.page-faq .faq-q {
  font-size: clamp(0.94rem, 2.5vw, 1.04rem);
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink);
}

.page-faq .faq-toggle {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line);
  position: relative;
  transition: border-color 0.25s ease;
}

.page-faq .faq-toggle::before,
.page-faq .faq-toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.page-faq .faq-toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-toggle {
  border-color: rgba(38, 242, 208, 0.6);
}

.page-faq .faq-item[open] .faq-toggle::after {
  transform: translate(-50%, -50%) rotate(0deg);
  opacity: 0;
}

.page-faq .faq-answer {
  padding: 0 var(--faq-answer-pad) 20px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.82;
}

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

.page-faq .faq-answer::before {
  content: "";
  display: block;
  height: 1px;
  margin-bottom: 16px;
  background: linear-gradient(90deg, rgba(38, 242, 208, 0.4), transparent 72%);
}

/* ---------- 内嵌媒体 ---------- */
.page-faq .faq-inline-media {
  margin: 22px 0 0;
}

.page-faq .faq-inline-media .media-img,
.page-faq .faq-inline-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-inline-media .media-caption {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

/* ---------- 联系卡片 ---------- */
.page-faq .faq-contact-section {
  padding-block: clamp(40px, 7vw, 88px);
}

.page-faq .faq-contact-card {
  position: relative;
  border: 1px solid var(--line-faint);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(38, 242, 208, 0.12), transparent 58%),
    linear-gradient(160deg, rgba(18, 59, 74, 0.62), rgba(14, 26, 48, 0.86));
  padding: clamp(24px, 5vw, 48px);
  overflow: hidden;
}

.page-faq .faq-contact-card::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 26, 0.2), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-contact-copy h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  line-height: 1.24;
  margin: 14px 0 0;
  color: var(--ink);
}

.page-faq .faq-contact-copy .lede {
  margin-top: 14px;
  max-width: 56ch;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.8;
}

.page-faq .faq-contact-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(26px, 4vw, 38px);
}

.page-faq .faq-contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 16px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-faint);
  background: rgba(7, 13, 26, 0.42);
}

.page-faq .faq-contact-label {
  flex: none;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--orange-soft);
  text-transform: uppercase;
}

.page-faq .faq-contact-value {
  flex: 1 1 200px;
  min-width: 0;
  word-break: break-word;
  color: var(--ink);
  font-size: 0.95rem;
  line-height: 1.6;
}

.page-faq .faq-contact-item .copy-btn {
  flex: none;
}

.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 34px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact-item--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: 1.02fr 1fr;
    align-items: center;
    gap: clamp(30px, 5vw, 68px);
  }

  .page-faq .faq-hero-copy h1 {
    max-width: 18ch;
  }

  .page-faq .faq-answer {
    padding-left: calc(var(--faq-answer-pad) + 3.6rem);
    padding-right: calc(var(--faq-answer-pad) + 1.6rem);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-aside-w) minmax(0, 1fr);
    gap: clamp(38px, 5vw, 74px);
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-aside-list {
    flex-direction: column;
    gap: 3px;
  }

  .page-faq .faq-aside-list a {
    justify-content: flex-start;
    padding: 12px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-num,
  .page-faq .faq-toggle,
  .page-faq .faq-toggle::before,
  .page-faq .faq-toggle::after,
  .page-faq .faq-aside-list a {
    transition: none;
  }
}