.page-faq {
  padding-bottom: clamp(48px, 7vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero__head {
  max-width: 68ch;
  padding-top: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero__title {
  margin: .35em 0 0;
  font-size: clamp(34px, 8.4vw, 74px);
  line-height: .96;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__lead {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

.page-faq .faq-hero__banner {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: var(--bw) solid var(--line);
  background: var(--p1);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-faq .faq-hero__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
  filter: saturate(.82) contrast(1.06);
}

/* ---------- 分组索引 ---------- */
.page-faq .faq-index {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--bw) solid var(--line);
  border-bottom: var(--bw) solid var(--line);
  background: var(--p1);
}

.page-faq .faq-index__list li + li {
  border-left: 1px solid var(--line-soft);
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px clamp(14px, 2.2vw, 26px);
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: .08em;
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--p2);
  color: var(--accent);
}

.page-faq .faq-index__list .num {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: .04em;
}

/* ---------- 通用小节标题 ---------- */
.page-faq .faq-head {
  max-width: 64ch;
  margin-top: clamp(8px, 1.6vw, 14px);
}

.page-faq .faq-head h2 {
  margin: .3em 0 0;
}

.page-faq .faq-head__note {
  margin: clamp(12px, 1.8vw, 18px) 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-faq .faq-group {
  padding: clamp(18px, 2.4vw, 26px);
  scroll-margin-top: 132px;
  transition: border-color var(--t) var(--ease);
}

.page-faq .faq-group:target {
  border-color: var(--accent);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: var(--bw) solid var(--line);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 23px);
  letter-spacing: -.01em;
}

.page-faq .faq-group__meta {
  flex: none;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  white-space: nowrap;
}

.page-faq .qa {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .qa:last-of-type {
  border-bottom: 0;
}

.page-faq .qa > summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  transition: color var(--t) var(--ease);
}

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

.page-faq .qa > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--accent);
}

.page-faq .qa[open] > summary::after {
  content: "–";
}

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--accent);
}

.page-faq .qa__a {
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 3px solid var(--accent2);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .qa__a a {
  color: var(--accent);
}

/* ---------- 旧版本路径 ---------- */
.page-faq .legacy {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  padding: clamp(20px, 3vw, 36px);
  scroll-margin-top: 132px;
}

.page-faq .legacy__lead {
  margin: clamp(16px, 2.2vw, 22px) 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .legacy__steps {
  position: relative;
  margin: clamp(22px, 2.8vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-faq .legacy__steps::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 44px;
  bottom: 44px;
  width: 1px;
  background: var(--line);
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .step__num {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: var(--bw) solid var(--accent);
  background: var(--p2);
  color: var(--accent);
  font-size: 15px;
  letter-spacing: .04em;
}

.page-faq .step__body h3 {
  margin: 0 0 4px;
  font-size: 15px;
  letter-spacing: 0;
}

.page-faq .step__body p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .step__body a {
  color: var(--accent);
}

.page-faq .legacy__shortcuts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: clamp(22px, 2.8vw, 30px);
}

.page-faq .shortcut {
  padding: 8px 16px;
  border: var(--bw) solid var(--line);
  background: var(--p2);
  color: var(--num);
  font-size: 14px;
  letter-spacing: .1em;
}

.page-faq .shortcut__note {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-faq .legacy__figure {
  margin: 0;
}

.page-faq .legacy__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: var(--bw) solid var(--line);
  background: var(--p1);
  box-shadow: var(--shadow);
  object-fit: cover;
}

.page-faq .legacy__figure figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 更新节奏 ---------- */
.page-faq .rhythm {
  margin-top: clamp(22px, 3vw, 34px);
  border: var(--bw) solid var(--line);
  background: var(--p1);
  box-shadow: var(--shadow);
}

.page-faq .rhythm__row {
  display: grid;
  gap: 6px 18px;
  padding: clamp(16px, 2.2vw, 22px) clamp(16px, 2.4vw, 26px);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .rhythm__row:last-child {
  border-bottom: 0;
}

.page-faq .rhythm__name {
  margin: 0;
  font-size: 16px;
  letter-spacing: 0;
}

.page-faq .rhythm__rate {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--accent);
}

.page-faq .rhythm__rate--hot {
  color: var(--focus);
}

.page-faq .rhythm__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 订阅设置 ---------- */
.page-faq .alerts {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .alerts__title {
  margin: 0 0 clamp(14px, 2vw, 18px);
  font-size: clamp(17px, 2vw, 20px);
  letter-spacing: -.01em;
}

.page-faq .alerts__main {
  padding: clamp(20px, 2.8vw, 30px);
}

.page-faq .alerts__list {
  display: grid;
  gap: 13px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .alerts__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-faq .alerts__list li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: .62em;
  background: var(--accent);
}

.page-faq .alerts__aside {
  padding: clamp(20px, 2.8vw, 30px);
}

.page-faq .alerts__text {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.76;
  color: var(--muted);
}

.page-faq .alerts__link {
  margin: 0;
}

.page-faq .alerts__link a {
  color: var(--accent);
  font-size: 14px;
  letter-spacing: .04em;
}

/* ---------- 联系 ---------- */
.page-faq .touch {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
  padding: clamp(22px, 3.2vw, 40px);
  background: var(--p2);
  scroll-margin-top: 132px;
}

.page-faq .touch__lead {
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .touch__facts {
  display: grid;
  gap: 12px;
  margin: clamp(20px, 2.6vw, 26px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .touch__facts li {
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .touch__label {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-faq .touch__value {
  font-size: 15px;
  color: var(--num);
  word-break: break-word;
}

.page-faq .touch__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

.page-faq .touch__aside-title {
  margin: 0 0 clamp(14px, 2vw, 18px);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--muted);
  font-weight: 500;
}

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

.page-faq .touch__links li {
  padding: 14px 16px;
  border: var(--bw) solid var(--line);
  background: var(--p1);
  transition: border-color var(--t) var(--ease);
}

.page-faq .touch__links li:hover,
.page-faq .touch__links li:focus-within {
  border-color: var(--accent);
}

.page-faq .touch__links a {
  display: block;
  color: var(--accent);
  font-size: 14.5px;
  text-decoration: none;
  letter-spacing: .02em;
}

.page-faq .touch__links span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.68;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .rhythm__row {
    grid-template-columns: minmax(0, 150px) minmax(0, 120px) minmax(0, 1fr);
    align-items: baseline;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .alerts {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-faq .touch {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-faq .legacy {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (max-width: 520px) {
  .page-faq .faq-index__list li {
    flex: 1 1 50%;
    border-left: 0;
  }

  .page-faq .faq-index__list li + li {
    border-top: 1px solid var(--line-soft);
  }

  .page-faq .faq-index__list li:nth-child(even) {
    border-left: 1px solid var(--line-soft);
  }

  .page-faq .step {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
  }

  .page-faq .step__num {
    width: 38px;
    height: 38px;
    font-size: 13px;
  }

  .page-faq .legacy__steps::before {
    left: 18px;
    top: 38px;
    bottom: 38px;
  }
}