.page-faq {
  --faq-panel: rgba(14, 42, 68, .55);
  --faq-cyan-wash: rgba(45, 212, 191, .08);
  background: var(--ink-900);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 4vw, 2rem) 0 clamp(1.75rem, 5vw, 2.75rem);
  background:
    radial-gradient(120% 100% at 92% -10%, rgba(45, 212, 191, .18), transparent 58%),
    linear-gradient(152deg, var(--ink-800) 0%, var(--ink-900) 60%, var(--ink-900) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -20%;
  top: -35%;
  width: 58%;
  height: 180%;
  background: linear-gradient(152deg, rgba(214, 161, 91, .16), rgba(255, 107, 53, .06) 50%, transparent 78%);
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
}

.page-faq .faq-hero-main h1 {
  margin: .5rem 0 0;
  font-size: clamp(2rem, 7vw, 3.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.02em;
}

.page-faq .faq-hero-main h1::after {
  content: "";
  display: block;
  width: 4.5rem;
  height: 3px;
  margin: .85rem 0 1rem;
  background: linear-gradient(90deg, var(--gold), var(--signal));
}

.page-faq .faq-hero-main .lede {
  margin: 0;
  max-width: 60ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* 状态速览卡，角标溢出容器 */
.page-faq .faq-status {
  position: relative;
  display: grid;
  gap: .55rem;
  padding: 1.15rem 1.05rem 1rem;
  border: var(--hairline-strong);
  background: var(--faq-panel);
}

.page-faq .faq-status::before {
  content: "R27";
  position: absolute;
  top: -.8rem;
  right: -.35rem;
  padding: .22rem .55rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--ink-900);
  background: var(--gold);
}

.page-faq .faq-stat {
  display: flex;
  gap: .8rem;
  align-items: baseline;
  padding-top: .6rem;
  border-top: var(--hairline);
}

.page-faq .faq-stat:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-stat-num {
  flex: 0 0 3.6rem;
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--gold);
}

.page-faq .faq-stat-label {
  font-size: .82rem;
  line-height: 1.6;
  color: var(--text-dim);
}

/* 分类跳转条 */
.page-faq .faq-tabs {
  display: flex;
  gap: .4rem;
  margin-top: clamp(1.4rem, 4vw, 2.1rem);
  padding-bottom: .35rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .45rem .8rem;
  border: var(--hairline);
  color: var(--text-dim);
  font-size: .82rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  color: var(--text);
  border-color: rgba(45, 212, 191, .45);
  background: var(--faq-cyan-wash);
}

.page-faq .faq-tab-num {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--gold);
}

/* ---------- 正文骨架 ---------- */
.page-faq .faq-body {
  padding-bottom: clamp(2rem, 6vw, 3.5rem);
}

.page-faq .faq-section {
  padding-block: clamp(1.9rem, 5vw, 3rem);
  border-top: var(--hairline);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.page-faq .faq-section-index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-section-title {
  margin: .4rem 0 .55rem;
  font-size: clamp(1.3rem, 3.4vw, 1.65rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
}

.page-faq .faq-section-desc {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text-dim);
}

/* 配图 */
.page-faq .faq-figure {
  margin: 0 0 1.35rem;
  border: var(--hairline);
  background: var(--ink-850);
  overflow: hidden;
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  border-top: var(--hairline);
}

.page-faq .qa-item {
  border-bottom: var(--hairline);
}

.page-faq .qa-item summary {
  display: flex;
  gap: .7rem;
  align-items: flex-start;
  padding: .95rem .2rem;
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-item summary::after {
  content: "+";
  margin-left: auto;
  padding-left: .6rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.4;
  color: var(--gold);
}

.page-faq .qa-item[open] summary::after {
  content: "–";
  color: var(--signal);
}

.page-faq .qa-item summary:hover {
  color: #fff;
}

.page-faq .qa-item summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-faq .qa-mark {
  flex: 0 0 auto;
  padding-top: .2rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--text-dim);
}

.page-faq .qa-answer {
  padding: 0 1.4rem 1.1rem 2.05rem;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--text-dim);
}

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

.page-faq .qa-answer p + p {
  margin-top: .6rem;
}

/* ---------- 材料清单表格 ---------- */
.page-faq .faq-table-wrap {
  margin-top: 1.4rem;
  border: var(--hairline);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: .78rem;
  line-height: 1.5;
}

.page-faq .faq-table caption {
  padding: .7rem .9rem;
  border-bottom: var(--hairline);
  text-align: left;
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-faq .faq-table th {
  padding: .6rem .9rem;
  border-bottom: var(--hairline);
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-align: left;
  white-space: nowrap;
  color: var(--text-dim);
}

.page-faq .faq-table td {
  padding: .68rem .9rem;
  border-bottom: var(--hairline);
  vertical-align: top;
  line-height: 1.65;
  color: var(--text);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table tbody tr:hover {
  background: var(--faq-cyan-wash);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: .55rem;
  margin-bottom: 1rem;
}

.page-faq .faq-contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem .8rem;
  padding: .7rem .85rem;
  border: var(--hairline);
  background: var(--faq-panel);
}

.page-faq .faq-contact-key {
  flex: 0 0 4.6rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--text-dim);
}

.page-faq .faq-contact-value {
  font-size: .88rem;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

.page-faq .copy-btn {
  margin-left: auto;
  padding: .28rem .6rem;
  border: var(--hairline);
  background: transparent;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--text-dim);
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  color: var(--text);
  border-color: rgba(45, 212, 191, .5);
}

.page-faq .copy-btn[data-copied] {
  color: var(--pitch);
  border-color: var(--pitch);
}

.page-faq .faq-contact-note {
  margin: 0 0 1.5rem;
  padding-left: .85rem;
  border-left: 2px solid var(--gold);
  font-size: .84rem;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 底部指引 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 1.1rem;
  padding-top: clamp(1.9rem, 5vw, 3rem);
  border-top: var(--hairline);
}

.page-faq .faq-cta-title {
  margin: 0 0 .5rem;
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
}

.page-faq .faq-cta-text {
  margin: 0;
  max-width: 62ch;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }

  .page-faq .faq-cta-actions {
    justify-content: flex-end;
  }

  .page-faq .faq-contact-row {
    flex-wrap: nowrap;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .85fr);
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: start;
  }

  .page-faq .faq-section {
    display: grid;
    grid-template-columns: minmax(210px, 260px) minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 3rem);
  }

  .page-faq .faq-section-head {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tab,
  .page-faq .copy-btn {
    transition: none;
  }
}