.page-faq {
  --faq-gap: clamp(16px, 2.6vw, 30px);
  --faq-pad: clamp(14px, 2vw, 22px);
  display: block;
  overflow-x: hidden;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .crumb-sep {
  margin: 0 0.55em;
  color: var(--line);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(24px, 4.5vw, 56px) 0 clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.26;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: var(--pad);
  top: 0;
  width: min(42%, 440px);
  height: 4px;
  background: var(--mint);
}

.page-faq .faq-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero-copy h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(29px, 6vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--paper);
  margin: 0.28em 0 0.48em;
  text-wrap: balance;
}

.page-faq .faq-hero-copy .lede {
  max-width: 34em;
  color: var(--paper);
  opacity: 0.9;
}

.page-faq .faq-hero-stats {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: clamp(14px, 2vw, 22px) 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: clamp(16px, 2.6vw, 34px);
}

.page-faq .faq-hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 84px;
}

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(30px, 4.6vw, 46px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--mint);
}

.page-faq .faq-stat-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mute);
}

.page-faq .faq-hero-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  max-width: 100%;
}

.page-faq .faq-hero-badge {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
  background: var(--orange-bg);
  border-top: 1px solid var(--orange);
  border-right: 1px solid var(--orange);
}

/* ---------- 问题目录 ---------- */

.page-faq .faq-index {
  padding: clamp(40px, 6vw, 76px) 0 clamp(6px, 1.6vw, 16px);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-index-list > li {
  background: var(--ink);
}

.page-faq .faq-index-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 146px;
  height: 100%;
  padding: 18px 16px 20px;
  background: var(--ink);
  color: inherit;
  text-decoration: none;
  transition: background 0.18s ease;
}

.page-faq .faq-index-item::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 0;
  background: var(--mint);
  transition: height 0.18s ease;
}

.page-faq .faq-index-item:hover,
.page-faq .faq-index-item:focus-visible {
  background: var(--ink-2);
}

.page-faq .faq-index-item:hover::after,
.page-faq .faq-index-item:focus-visible::after {
  height: 3px;
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--mint);
}

.page-faq .faq-index-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.34;
  color: var(--paper);
}

.page-faq .faq-index-hint {
  margin-top: auto;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mute);
}

/* ---------- 主体布局 ---------- */

.page-faq .faq-main {
  padding: clamp(36px, 5vw, 64px) 0 0;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.6vw, 46px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .faq-groups {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
  min-width: 0;
}

/* ---------- 折叠问答组 ---------- */

.page-faq .faq-group {
  position: relative;
  border-bottom: 1px solid var(--line);
  transition: background 0.22s ease;
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--mint);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.22s ease;
  pointer-events: none;
}

.page-faq .faq-group[open] {
  background: var(--ink-2);
}

.page-faq .faq-group[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: clamp(18px, 2.4vw, 26px) var(--faq-pad);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-group-head:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: -2px;
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--mint);
  border: 1px solid var(--line);
  padding: 4px 7px;
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.3;
  color: var(--paper);
  transition: color 0.18s ease;
}

.page-faq .faq-group-head:hover .faq-group-title {
  color: var(--mint);
}

.page-faq .faq-group-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mute);
  white-space: nowrap;
}

.page-faq .faq-group-mark {
  position: relative;
  width: 16px;
  height: 16px;
  flex: none;
}

.page-faq .faq-group-mark::before,
.page-faq .faq-group-mark::after {
  content: "";
  position: absolute;
  background: var(--mint);
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.page-faq .faq-group-mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-group-mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-group[open] .faq-group-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-group-body {
  padding: 0 var(--faq-pad) clamp(22px, 2.8vw, 32px);
}

.page-faq .faq-qa {
  border-top: 1px solid var(--line);
  padding: 18px 0 4px;
}

.page-faq .faq-qa h4 {
  display: flex;
  gap: 9px;
  margin: 0 0 0.55em;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .faq-qa h4::before {
  content: "Q";
  flex: none;
  margin-top: 3px;
  padding: 1px 6px 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  color: var(--orange);
  background: var(--orange-bg);
  border: 1px solid var(--orange);
}

.page-faq .faq-qa p {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mute);
}

.page-faq .faq-qa a {
  color: var(--mint);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* ---------- iOS 组内的图文排布 ---------- */

.page-faq .faq-ios-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 18px 0 6px;
  align-items: start;
}

.page-faq .faq-ios-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink);
}

.page-faq .faq-ios-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  max-width: 100%;
}

.page-faq .faq-ios-lead p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper);
  max-width: 42em;
}

.page-faq .faq-ios-meta {
  display: inline-block;
  margin-bottom: 10px !important;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--lime);
  background: var(--ink);
  border: 1px solid var(--line);
}

/* ---------- 右侧窄栏 ---------- */

.page-faq .faq-side {
  display: grid;
  gap: clamp(16px, 2vw, 22px);
  align-content: start;
  min-width: 0;
}

.page-faq .faq-side-card {
  border: 1px solid var(--line);
  background: var(--ink-2);
  padding: 18px 18px 20px;
}

.page-faq .faq-side-card--warm {
  background: var(--orange-bg);
  border-color: var(--orange);
}

.page-faq .faq-side-card--warm .kicker {
  color: var(--orange);
}

.page-faq .faq-side-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-side-list li {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-side-list a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  transition: color 0.16s ease, padding-left 0.16s ease;
}

.page-faq .faq-side-list a:hover,
.page-faq .faq-side-list a:focus-visible {
  color: var(--mint);
  padding-left: 7px;
}

.page-faq .faq-side-list a i {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  line-height: 1.55;
  color: var(--mute);
}

.page-faq .faq-contact-note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

.page-faq .faq-contact-line {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-side-card--warm .btn {
  display: flex;
  justify-content: center;
  width: 100%;
  margin-top: 16px;
}

/* ---------- 断点 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-ios-intro {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (min-width: 640px) {
  .page-faq .faq-index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-index-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) minmax(252px, 296px);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 116px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-group-head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 10px;
  }

  .page-faq .faq-group-meta {
    display: none;
  }

  .page-faq .faq-index-item {
    min-height: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-group::before,
  .page-faq .faq-group-mark::before,
  .page-faq .faq-group-mark::after,
  .page-faq .faq-index-item,
  .page-faq .faq-index-item::after,
  .page-faq .faq-side-list a {
    transition: none;
  }
}
<<<END>>>