.page-faq {
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

.page-faq .breadcrumb {
  padding-top: 18px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 5vw, 44px) 0 clamp(32px, 6vw, 64px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: auto -10% 0 -10%;
  height: 46%;
  background: var(--teal);
  clip-path: polygon(0 38%, 100% 0, 100% 100%, 0 100%);
  opacity: 0.55;
  z-index: 0;
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero-copy h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  max-width: 16ch;
}

.page-faq .faq-hero-copy .lede {
  margin-top: 16px;
  color: var(--dim);
  max-width: 44ch;
  line-height: 1.85;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .faq-hero-media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  transform: rotate(-1.2deg);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-hero-media .media-caption {
  border-top: 1px solid var(--line);
  padding: 10px 14px;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

/* ---------- 场景索引 ---------- */
.page-faq .faq-index .section-head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 22px;
}

.page-faq .faq-index-note {
  font-size: 13px;
  margin: 0;
}

.page-faq .faq-scene-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  grid-template-columns: 1fr;
}

.page-faq .faq-scene {
  background: var(--panel);
  min-width: 0;
}

.page-faq .faq-scene-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 20px 18px 22px;
  text-decoration: none;
  color: inherit;
  transition: background var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-faq .faq-scene-link:hover,
.page-faq .faq-scene-link:focus-visible {
  background: var(--teal);
  transform: translateX(4px);
  outline: none;
}

.page-faq .faq-scene-num {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-faq .faq-scene-icon {
  color: var(--cyan);
  line-height: 0;
  margin: 6px 0 2px;
}

.page-faq .faq-scene-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.01em;
}

.page-faq .faq-scene-desc {
  color: var(--dim);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 32px;
}

.page-faq .faq-aside {
  border-left: 1px solid var(--line);
  padding-left: 16px;
}

.page-faq .faq-aside-nav {
  display: grid;
  gap: 0;
  margin-top: 10px;
}

.page-faq .faq-aside-nav a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  color: var(--dim);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-faq .faq-aside-nav a:hover,
.page-faq .faq-aside-nav a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

.page-faq .faq-aside-key {
  color: var(--cyan);
  font-size: 12px;
}

.page-faq .faq-aside-count {
  margin-left: auto;
  font-size: 11px;
  color: var(--line);
}

.page-faq .faq-aside-nav a:hover .faq-aside-count {
  color: var(--amber);
}

.page-faq .faq-aside-help {
  margin-top: 22px;
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-aside-help-text {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--dim);
}

/* ---------- 问题组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 48px;
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group-num {
  font-size: 13px;
  color: var(--amber);
  border: 1px solid var(--line);
  padding: 2px 7px;
  line-height: 1.4;
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 4vw, 30px);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-faq .faq-group-lede {
  margin: 14px 0 20px;
  color: var(--dim);
  font-size: 14px;
  line-height: 1.85;
  max-width: 60ch;
}

.page-faq .faq-group-media {
  margin: 0 0 8px;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-faq .faq-group-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-group-media .media-caption {
  border-top: 1px solid var(--line);
  padding: 9px 14px;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-q {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--text);
  transition: color var(--t) var(--ease);
}

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

.page-faq .faq-q:hover {
  color: var(--cyan);
}

.page-faq .faq-q:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-q-num {
  flex: 0 0 auto;
  font-size: 11px;
  color: var(--dim);
  padding-top: 5px;
  letter-spacing: 0.08em;
}

.page-faq .faq-q-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.3;
  color: var(--cyan);
}

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

.page-faq .faq-item[open] > .faq-q::after {
  content: "−";
  color: var(--amber);
}

.page-faq .faq-a {
  padding: 0 0 20px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  align-items: start;
  color: var(--dim);
  font-size: 14px;
  line-height: 1.9;
}

.page-faq .faq-step-num {
  font-size: 11px;
  color: var(--cyan);
  border: 1px solid var(--line);
  text-align: center;
  line-height: 16px;
  height: 18px;
  margin-top: 2px;
}

.page-faq .faq-tip {
  margin: 0 0 14px;
  padding: 9px 0 9px 12px;
  border-left: 2px solid var(--amber);
  color: var(--dim);
  font-size: 13px;
  line-height: 1.8;
}

.page-faq .faq-tip strong {
  color: var(--amber);
  font-weight: 500;
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-a a:hover {
  border-color: var(--cyan);
}

.page-faq .faq-verify {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
}

.page-faq .faq-vote {
  font: inherit;
  font-size: 12px;
  padding: 5px 12px;
  background: transparent;
  color: var(--dim);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-faq .faq-vote:hover,
.page-faq .faq-vote:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 26px;
  padding: clamp(20px, 4vw, 36px);
  border: 1px solid var(--amber);
  background: linear-gradient(148deg, var(--panel) 0%, var(--ink-2) 62%, var(--teal) 100%);
  scroll-margin-top: 96px;
}

.page-faq .faq-contact-lede {
  margin: 14px 0 20px;
  color: var(--dim);
  font-size: 14px;
  line-height: 1.85;
  max-width: 46ch;
}

.page-faq .faq-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  align-content: start;
}

.page-faq .faq-contact-list li {
  background: var(--ink);
  display: grid;
  gap: 6px;
  padding: 14px 16px;
}

.page-faq .faq-contact-key {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-contact-val {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-related {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-related-label {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--dim);
  margin: 0;
}

.page-faq .faq-related a {
  color: var(--dim);
  text-decoration: none;
  font-size: 13px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-faq .faq-related a:hover,
.page-faq .faq-related a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 40px;
  }

  .page-faq .faq-a {
    padding-left: 30px;
  }

  .page-faq .faq-contact {
    grid-template-columns: 1.15fr 1fr;
    align-items: start;
    gap: 34px;
  }

  .page-faq .faq-scene-link {
    padding: 24px 20px 26px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-scene-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-scene-link,
  .page-faq .faq-vote,
  .page-faq .faq-q,
  .page-faq .faq-aside-nav a,
  .page-faq .faq-related a {
    transition: none;
  }

  .page-faq .faq-scene-link:hover,
  .page-faq .faq-scene-link:focus-visible {
    transform: none;
  }

  .page-faq .faq-hero-media {
    transform: none;
  }
}