.page-faq {
  background: var(--arena);
  color: var(--ink);
  padding-bottom: clamp(64px, 9vw, 132px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 56px) 0 clamp(28px, 5vw, 58px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(620px, 78vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 55% 45%, rgba(43, 227, 210, .17), rgba(43, 227, 210, 0) 62%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(220px, 42vw);
  height: 4px;
  background: var(--orange);
  opacity: .85;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(12px, 1.8vw, 20px);
  max-width: 920px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 10vw, 104px);
  line-height: .94;
  letter-spacing: -.04em;
  color: var(--ink);
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--orange);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 64ch;
  color: var(--ink-soft);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 32px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__meta-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__meta-value {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.3vw, 26px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-faq .faq-hero__meta-label {
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

/* ---------- 问题目录 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: var(--header-h);
  z-index: 4;
  margin-inline: calc(var(--pad-x) * -1);
  padding: 10px var(--pad-x) 12px;
  background: linear-gradient(180deg, var(--arena) 0%, var(--arena) 74%, rgba(6, 11, 22, 0) 100%);
}

.page-faq .faq-index__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index__item {
  flex: none;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(15, 26, 46, .82);
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(43, 227, 210, .1);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: 0;
}

.page-faq .faq-block {
  padding-top: clamp(38px, 5vw, 68px);
  scroll-margin-top: calc(var(--header-h) + 76px);
}

.page-faq .faq-flow > .faq-block:first-child {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-block__head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-block__idx {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: rgba(43, 227, 210, .3);
}

.page-faq .faq-block__band {
  display: flex;
  gap: 6px;
}

.page-faq .faq-block__band i {
  display: block;
  height: 4px;
  border-radius: var(--r-pill);
}

.page-faq .faq-block__band i:nth-child(1) {
  width: 54px;
  background: var(--orange);
}

.page-faq .faq-block__band i:nth-child(2) {
  width: 20px;
  background: var(--cyan);
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 3.4vw, 40px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-faq .faq-block__note {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .acc {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--board);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-faq .acc[open] {
  border-color: rgba(43, 227, 210, .42);
  box-shadow: inset 3px 0 0 var(--cyan), var(--shadow-card);
}

.page-faq .acc__trigger {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .acc__trigger::after {
  content: "";
  margin-left: auto;
  margin-top: 8px;
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .24s ease;
}

.page-faq .acc[open] .acc__trigger::after {
  transform: rotate(-135deg);
}

.page-faq .acc__trigger:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: -4px;
}

.page-faq .acc__num {
  flex: none;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--orange);
}

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

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

.page-faq .acc__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .acc__panel p + p {
  margin-top: 10px;
}

.page-faq .faq-inline-link {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--cyan-soft);
}

/* ---------- 四步路径 ---------- */
.page-faq .steps {
  margin: 0 0 14px;
  padding: clamp(16px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--board-2);
}

.page-faq .steps__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .steps__item {
  position: relative;
  padding-left: 46px;
}

.page-faq .steps__item::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 36px;
  bottom: -18px;
  width: 2px;
  background: linear-gradient(180deg, var(--line), rgba(28, 39, 64, 0));
}

.page-faq .steps__item:last-child::before {
  content: none;
}

.page-faq .steps__num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--arena);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.page-faq .steps__item--final .steps__num {
  border-color: var(--orange);
  background: var(--orange);
  color: #131018;
}

.page-faq .steps__label {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .steps__desc {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 对比表 ---------- */
.page-faq .cmp-wrap {
  margin: 0 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow-x: auto;
}

.page-faq .cmp {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .cmp__caption {
  padding: 12px 14px 0;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-faq .cmp th,
.page-faq .cmp td {
  padding: 11px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
  border-bottom: 1px solid var(--line);
}

.page-faq .cmp thead th {
  background: var(--board-2);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--muted);
  white-space: nowrap;
}

.page-faq .cmp tbody th {
  color: var(--cyan);
  font-weight: 600;
}

.page-faq .cmp tbody td {
  color: var(--ink-soft);
}

.page-faq .cmp tbody tr:nth-child(even) {
  background: rgba(15, 26, 46, .55);
}

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

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: clamp(16px, 2.4vw, 24px) 0 4px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-md);
}

/* ---------- 联系通道 ---------- */
.page-faq .chan-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0 0 14px;
}

.page-faq .chan {
  position: relative;
  overflow: hidden;
  padding: 17px 18px 19px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--board);
}

.page-faq .chan::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cyan);
}

.page-faq .chan--hot::before {
  background: var(--orange);
}

.page-faq .chan__title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .chan__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--cyan);
  word-break: break-word;
}

.page-faq .chan--hot .chan__value {
  color: var(--orange-soft);
}

.page-faq .chan__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-foot {
  margin: 14px 0 0;
  padding: 14px 16px;
  border: 1px solid rgba(43, 227, 210, .24);
  border-radius: var(--r-md);
  background: rgba(43, 227, 210, .08);
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 28px);
  padding-top: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-cta__text {
  flex: 1 1 220px;
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-faq .steps__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .steps__item {
    padding-left: 0;
    padding-top: 48px;
  }

  .page-faq .steps__item::before {
    left: 40px;
    right: 0;
    top: 15px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--line), rgba(28, 39, 64, .12));
  }

  .page-faq .steps__item:last-child::before {
    left: 40px;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--line), rgba(28, 39, 64, .12));
  }

  .page-faq .chan-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: clamp(36px, 4vw, 64px);
  }

  .page-faq .faq-index {
    top: 96px;
    margin-inline: 0;
    padding: 4px 0 0 20px;
    background: none;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    padding: 7px 0;
    border: 0;
    border-radius: 0;
    background: none;
    font-size: 14px;
    line-height: 1.5;
    color: var(--muted);
    white-space: normal;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: none;
    color: var(--cyan);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .acc__trigger::after,
  .page-faq .acc,
  .page-faq .faq-index__link {
    transition: none;
  }
}