.page-faq {
  --faq-block-gap: clamp(36px, 4.5vw, 64px);
  --faq-topline: clamp(28px, 4vw, 52px);
  padding-bottom: clamp(72px, 9vw, 132px);
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
  padding: var(--faq-topline) 0 clamp(32px, 4.5vw, 56px);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.6vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 16.5px;
  line-height: 1.82;
  color: var(--text-dim);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--edge);
  background:
    linear-gradient(150deg, var(--deep) 0%, var(--night) 100%);
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
    gap: clamp(32px, 4vw, 56px);
  }
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 34px;
  padding-top: clamp(28px, 3.6vw, 48px);
  border-top: 1px solid var(--edge);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 98px;
  }
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-faq .faq-index__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.page-faq .faq-index__nav::-webkit-scrollbar {
  display: none;
}

.page-faq .index-link {
  display: block;
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--edge);
  background: rgba(19, 41, 63, 0.72);
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.page-faq .index-link:hover,
.page-faq .index-link:focus-visible {
  border-color: var(--cyan);
  color: var(--cream);
  transform: translateY(-2px);
}

.page-faq .index-link.is-active {
  background: var(--orange);
  border-color: var(--orange);
  color: #0B1B2B;
  font-weight: 600;
}

@media (min-width: 1000px) {
  .page-faq .faq-index__nav {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .index-link {
    text-align: left;
  }
}

/* ---------- 章节 ---------- */
.page-faq .faq-block {
  padding-bottom: var(--faq-block-gap);
  scroll-margin-top: 96px;
}

.page-faq .faq-block + .faq-block {
  padding-top: var(--faq-block-gap);
  border-top: 1px solid var(--edge);
}

.page-faq .faq-block .section-head {
  margin-bottom: 22px;
}

.page-faq .faq-block .section-head__lede {
  max-width: 60ch;
}

.page-faq .faq-block .section-head__title {
  font-family: var(--font-serif);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .disclosure {
  border: 1px solid var(--edge);
  border-left: 3px solid var(--edge);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(19, 41, 63, 0.94), rgba(11, 27, 43, 0.94));
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .disclosure:hover {
  border-color: var(--stone);
}

.page-faq .disclosure[data-open="true"] {
  border-left-color: var(--cyan);
  box-shadow: var(--shadow-soft);
}

.page-faq .disclosure__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  background: none;
  border: 0;
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
}

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

.page-faq .faq-mark {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 3px;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .faq-mark::after {
  transform: rotate(90deg);
}

.page-faq .disclosure[data-open="true"] .faq-mark::after {
  transform: rotate(0deg);
  opacity: 0;
}

.page-faq .disclosure__panel {
  padding: 0 20px 20px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--text-dim);
}

.page-faq .disclosure__panel p {
  margin: 0;
  max-width: 64ch;
}

.page-faq .disclosure__panel a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .disclosure[data-open="false"] .disclosure__panel {
  display: none;
}

/* ---------- 维护节奏带 ---------- */
.page-faq .faq-rhythm {
  display: grid;
  gap: 18px;
  margin-top: 24px;
  padding: 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--edge);
  background:
    repeating-linear-gradient(135deg, rgba(47, 230, 200, 0.06) 0 2px, transparent 2px 10px),
    linear-gradient(120deg, var(--deep) 0%, var(--night) 100%);
}

.page-faq .faq-rhythm__cycle {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-rhythm__desc {
  display: block;
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

@media (min-width: 760px) {
  .page-faq .faq-rhythm {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-rhythm__item + .faq-rhythm__item {
    padding-left: 18px;
    border-left: 1px solid var(--edge);
  }
}

/* ---------- 说明配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 20px;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--edge);
  background: linear-gradient(140deg, var(--deep), var(--night));
}

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

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(44px, 5.5vw, 76px);
  padding: clamp(26px, 3.6vw, 46px);
  border-radius: var(--r-lg);
  border: 1px solid var(--edge);
  background: linear-gradient(158deg, var(--deep) 0%, var(--night) 72%);
  scroll-margin-top: 96px;
}

.page-faq .faq-contact .section-head {
  margin-bottom: 24px;
}

.page-faq .faq-contact .section-head__lede {
  max-width: 56ch;
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 880px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    gap: 32px;
    align-items: start;
  }
}

.page-faq .faq-channels {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-channels .contact-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px 16px;
  padding: 15px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--edge);
  background: rgba(11, 27, 43, 0.62);
}

.page-faq .faq-channels .contact-label {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-channels .contact-value {
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cream);
  overflow-wrap: anywhere;
}

.page-faq .faq-channels .contact-value--text {
  font-family: var(--font-body);
  font-size: 15px;
}

.page-faq .copy-btn {
  flex: 0 0 auto;
  padding: 8px 15px;
  border-radius: var(--r-pill);
  border: 1px solid var(--cyan);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-faq .copy-btn:hover {
  background: rgba(47, 230, 200, 0.14);
}

.page-faq .copy-btn[data-copied="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #0B1B2B;
}

.page-faq .faq-contact .contact-note {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 13.5px;
  line-height: 1.76;
  color: var(--text-dim);
}

.page-faq .faq-cta {
  padding: 22px;
  border-radius: var(--r-md);
  border: 1px solid var(--edge);
  background: linear-gradient(140deg, rgba(47, 230, 200, 0.1), rgba(255, 122, 41, 0.12));
}

.page-faq .faq-cta__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--cream);
}

.page-faq .faq-cta__text {
  margin: 10px 0 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-cta .btn {
  margin: 0 8px 8px 0;
}

/* ---------- 固定回看胶囊 ---------- */
.page-faq .faq-anchor-pill {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 40;
  display: none;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--cyan);
  background: rgba(19, 41, 63, 0.94);
  color: var(--cream);
  font-size: 13px;
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transition: background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-anchor-pill:hover {
  background: var(--cyan);
  color: #0B1B2B;
}

@media (min-width: 1000px) {
  .page-faq .faq-anchor-pill {
    display: inline-block;
  }
}

/* ---------- 窄屏收紧 ---------- */
@media (max-width: 520px) {
  .page-faq .faq-channels .contact-item {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .copy-btn {
    justify-self: start;
  }

  .page-faq .disclosure__trigger {
    font-size: 15.5px;
    padding: 16px 16px;
  }

  .page-faq .disclosure__panel {
    padding: 0 16px 18px;
  }
}