/* ============================================================
   帮助中心 /help/  ——  页面专属样式（作用域 .page-faq）
   ============================================================ */

.page-faq {
  display: block;
  background: var(--paper);
}

/* ---------- 顶部 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 3px solid var(--accent);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    112deg,
    rgba(244, 239, 228, 0.055) 0 2px,
    transparent 2px 54px
  );
  pointer-events: none;
}

.page-faq .faq-hero .content-wrap {
  position: relative;
  z-index: 1;
  padding-top: clamp(26px, 4.5vw, 52px);
  padding-bottom: clamp(30px, 5vw, 58px);
}

.page-faq .faq-hero .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 8px;
  margin: 0 0 clamp(18px, 3vw, 30px);
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-faq .faq-hero .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(244, 239, 228, 0.55);
}

.page-faq .faq-hero .breadcrumb li + li::before {
  content: "/";
  color: rgba(244, 239, 228, 0.3);
}

.page-faq .faq-hero .breadcrumb a {
  color: rgba(244, 239, 228, 0.72);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--paper);
  border-bottom-color: var(--accent);
}

.page-faq .faq-hero__copy {
  max-width: 54rem;
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 clamp(12px, 1.6vw, 18px);
  color: var(--accent);
}

.page-faq .faq-hero h1 {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 6vw, 62px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 40em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(244, 239, 228, 0.76);
}

.page-faq .faq-hero__band {
  position: relative;
  margin: 0;
  height: clamp(108px, 19vw, 210px);
  overflow: hidden;
}

.page-faq .faq-hero__band img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.62;
}

/* ---------- 数据条 ---------- */

.page-faq .faq-facts {
  background: var(--paper-2);
  border-bottom: 1px solid var(--rule-soft);
}

.page-faq .faq-facts .content-wrap {
  padding-top: clamp(16px, 2.6vw, 24px);
  padding-bottom: clamp(16px, 2.6vw, 24px);
}

.page-faq .faq-facts__list {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px clamp(20px, 4vw, 54px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-facts__list li {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.page-faq .faq-facts__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(19px, 2.4vw, 27px);
  line-height: 1;
  color: var(--ink);
}

.page-faq .faq-facts__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-main {
  padding-top: clamp(32px, 5vw, 64px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-faq .faq-body {
  min-width: 0;
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--rail) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }
}

/* ---------- 主题索引 ---------- */

.page-faq .faq-index {
  padding-left: clamp(12px, 2vw, 18px);
  border-left: 3px solid var(--accent);
}

.page-faq .faq-index__head {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--gray);
}

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

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 7px 10px;
  border: 1px solid var(--rule-soft);
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 12px;
  color: var(--accent-ink);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover .faq-index__num,
.page-faq .faq-index__list a:focus-visible .faq-index__num {
  color: var(--signal);
}

@media (min-width: 1024px) {
  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-index__list {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }
}

/* ---------- 分组与分组头 ---------- */

.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 5vw, 68px);
}

.page-faq .faq-group--c1 { --g-accent: var(--spring); --g-accent-ink: #1B7A5C; }
.page-faq .faq-group--c2 { --g-accent: var(--summer); --g-accent-ink: var(--summer-deep); }
.page-faq .faq-group--c3 { --g-accent: var(--autumn); --g-accent-ink: #95690F; }
.page-faq .faq-group--c4 { --g-accent: var(--winter); --g-accent-ink: #1E6E93; }

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-group__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 72px;
  height: 2px;
  background: var(--g-accent);
}

.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(17px, 1.9vw, 21px);
  line-height: 1;
  color: var(--g-accent-ink);
}

.page-faq .faq-group__head h2 {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(20px, 2.4vw, 29px);
  line-height: 1.32;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-faq .faq-group__meta {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
  opacity: 0.45;
  transition: opacity var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-group__head:hover .faq-group__meta,
.page-faq .faq-group__head:focus-within .faq-group__meta {
  opacity: 1;
  color: var(--g-accent-ink);
}

.page-faq .faq-group__note {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gray);
}

.page-faq .faq-group__items {
  margin-top: clamp(6px, 1vw, 10px);
}

/* ---------- 折叠问答 ---------- */

.page-faq .qa {
  border-bottom: 1px solid var(--rule-soft);
  border-left: 3px solid var(--rule-soft);
  padding-left: clamp(12px, 1.8vw, 18px);
  transition: border-left-color var(--dur) var(--ease);
}

.page-faq .qa[open],
.page-faq .qa:hover {
  border-left-color: var(--g-accent);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: clamp(15px, 1.9vw, 20px) 0;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: clamp(15px, 1.45vw, 17px);
  line-height: 1.6;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover {
  color: var(--g-accent-ink);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--g-accent);
  outline-offset: 3px;
}

.page-faq .qa__badge {
  flex: none;
  margin-top: 3px;
  padding: 2px 6px;
  background: var(--ink);
  color: var(--g-accent);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.page-faq .qa__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__chev {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 2px solid var(--gray);
  border-bottom: 2px solid var(--gray);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__chev {
  transform: rotate(-135deg);
  border-color: var(--g-accent);
}

.page-faq .qa__a {
  max-width: 44em;
  padding: 0 0 clamp(16px, 2vw, 22px);
}

.page-faq .qa__a p {
  margin: 0;
  font-size: 16px;
  line-height: 1.88;
  color: var(--black);
}

.page-faq .qa__a a {
  color: var(--accent-ink);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color var(--dur) var(--ease);
}

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

/* ---------- 章节配图 ---------- */

.page-faq .faq-figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 8px;
  background: var(--paper);
  border: 1px solid var(--rule);
}

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

/* ---------- 底部行动区 ---------- */

.page-faq .faq-cta {
  margin-top: clamp(44px, 6vw, 80px);
  padding: clamp(22px, 3.4vw, 38px);
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
  background: var(--ink);
  color: var(--paper);
  border-left: 4px solid var(--accent);
}

.page-faq .faq-cta .eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
}

.page-faq .faq-cta h2 {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.76);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 780px) {
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq a,
  .page-faq summary,
  .page-faq .qa,
  .page-faq .qa__chev,
  .page-faq .qa__badge,
  .page-faq .faq-index__num,
  .page-faq .faq-group__meta {
    transition: none;
  }
}
<<<END>>>