.page-faq {
  padding-bottom: clamp(56px, 9vw, 120px);
  background: var(--paper);
}

.page-faq .breadcrumb {
  margin: clamp(20px, 3vw, 36px) 0 0;
}

/* ---------- 首屏声明 ---------- */
.page-faq .faq-masthead {
  position: relative;
  padding: clamp(24px, 4vw, 52px) 0 clamp(22px, 3.6vw, 44px);
}

.page-faq .faq-masthead::after {
  content: "";
  display: block;
  height: 9px;
  margin-top: clamp(26px, 4vw, 44px);
  background-image: repeating-linear-gradient(to right, var(--grid) 0 1px, transparent 1px 14px);
  opacity: 0.9;
}

.page-faq .faq-masthead__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 5.6vw, 56px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--ink);
  max-width: 24ch;
  margin: 14px 0 0;
  font-weight: 700;
}

.page-faq .faq-masthead__lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.7vw, 17.5px);
  line-height: 1.9;
  color: var(--ink-80);
}

.page-faq .faq-facts {
  list-style: none;
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-faq .faq-facts__item {
  background: var(--paper);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-facts__num {
  font-family: var(--font-data);
  font-size: clamp(18px, 2.4vw, 24px);
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.page-faq .faq-facts__label {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--concrete);
}

/* ---------- 筛选与目录 ---------- */
.page-faq .faq-toolbar {
  position: sticky;
  top: 0;
  z-index: 6;
  background: var(--paper);
  padding: clamp(14px, 2vw, 20px) 0 12px;
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-toolbar .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-faq .filter-bar__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--concrete);
  margin-right: 4px;
}

.page-faq .filter-chip {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.03em;
  padding: 7px 14px;
  border: 1px solid var(--grid);
  border-radius: 0;
  background: transparent;
  color: var(--ink-80);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .filter-chip:hover {
  border-color: var(--copper);
  color: var(--copper);
}

.page-faq .filter-chip.is-on,
.page-faq .filter-chip[aria-pressed="true"] {
  background: var(--copper);
  border-color: var(--copper);
  color: var(--paper);
}

.page-faq .faq-toc {
  margin-top: 14px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-toc ol {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  min-width: max-content;
}

.page-faq .faq-toc a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--ink-80);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-toc a:hover {
  color: var(--copper);
  border-bottom-color: var(--copper);
}

.page-faq .faq-toc__num {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--copper);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-sec {
  scroll-margin-top: 160px;
  padding-top: clamp(32px, 4.6vw, 60px);
  border-top: 1px solid var(--grid);
  margin-top: clamp(32px, 4.6vw, 60px);
}

.page-faq .faq-body > .faq-sec:first-child {
  border-top: 0;
  margin-top: 0;
}

.page-faq .faq-sec__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 18px;
  align-items: baseline;
  margin-bottom: clamp(14px, 2.6vw, 26px);
}

.page-faq .faq-sec__num {
  font-family: var(--font-data);
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1;
  color: var(--copper);
  letter-spacing: -0.02em;
}

.page-faq .faq-sec__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 33px);
  line-height: 1.25;
  color: var(--ink);
  margin: 0;
  font-weight: 700;
}

.page-faq .faq-sec__note {
  grid-column: 2;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--concrete);
}

.page-faq .faq-sec__figure {
  margin: clamp(20px, 3vw, 28px) 0 0;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-item__q {
  list-style: none;
  cursor: pointer;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  align-items: flex-start;
  padding: clamp(15px, 2vw, 20px) 0;
  font-size: clamp(15.5px, 1.9vw, 18px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 20px;
  line-height: 1.35;
  color: var(--copper);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--hibiscus);
}

.page-faq .faq-item__q:hover {
  color: var(--copper-lit);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

.page-faq .faq-item__a {
  padding: 0 0 clamp(16px, 2.2vw, 24px);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 68ch;
  font-size: 14.8px;
  line-height: 1.9;
  color: var(--ink-80);
}

.page-faq .faq-item__a a {
  color: var(--copper);
  text-decoration: none;
  border-bottom: 1px solid var(--data-cyan);
}

.page-faq .faq-item__a a:hover {
  color: var(--copper-lit);
}

.page-faq .faq-item.is-filtered-out {
  display: none;
}

.page-faq .faq-sec:not(:has(.faq-item:not(.is-filtered-out))) {
  display: none;
}

.page-faq .filter-empty {
  margin: clamp(24px, 3vw, 40px) 0 0;
  font-size: 14.5px;
  color: var(--concrete);
}

/* ---------- 更新节奏时间轴 ---------- */
.page-faq .faq-clock {
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding-left: 18px;
  border-left: 2px solid var(--pickle);
  display: grid;
  gap: 14px;
}

.page-faq .faq-clock__row {
  display: grid;
  gap: 3px;
}

.page-faq .faq-clock__t {
  justify-self: start;
  font-family: var(--font-data);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--ink);
  background: var(--pickle);
  padding: 3px 9px;
}

.page-faq .faq-clock__d {
  font-size: 14px;
  line-height: 1.7;
  color: var(--concrete);
}

/* ---------- 客服与反馈 ---------- */
.page-faq .faq-sec--support {
  padding-top: clamp(32px, 4.6vw, 60px);
}

.page-faq .faq-help {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  align-items: center;
  padding: clamp(26px, 3.6vw, 46px);
  background: var(--ink);
  color: var(--paper);
}

.page-faq .faq-help__num {
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--pickle);
}

.page-faq .faq-help__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.25;
  margin: 10px 0 0;
  color: var(--white);
  font-weight: 700;
}

.page-faq .faq-help__lede {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 14.6px;
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.8);
}

.page-faq .faq-help__contact {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  padding: 18px 0 0;
  display: grid;
  gap: 11px;
  border-top: 1px solid rgba(244, 239, 230, 0.2);
}

.page-faq .faq-help__contact > div {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 12px;
  align-items: baseline;
}

.page-faq .faq-help__contact dt {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(244, 239, 230, 0.58);
}

.page-faq .faq-help__contact dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 14px;
  line-height: 1.6;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 239, 230, 0.62);
}

.page-faq .faq-help .btn {
  margin-top: clamp(18px, 2.4vw, 26px);
}

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

.page-faq .faq-help__media .media__caption {
  margin-top: 10px;
  color: rgba(244, 239, 230, 0.6);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.page-faq .faq-sec__list--ink {
  background: var(--ink);
  padding: 0 clamp(26px, 3.6vw, 46px) clamp(18px, 2.6vw, 30px);
}

.page-faq .faq-sec__list--ink .faq-item {
  border-bottom-color: rgba(244, 239, 230, 0.2);
}

.page-faq .faq-sec__list--ink .faq-item:last-child {
  border-bottom: 0;
}

.page-faq .faq-sec__list--ink .faq-item__q {
  color: var(--paper);
}

.page-faq .faq-sec__list--ink .faq-item__q::after {
  color: var(--pickle);
}

.page-faq .faq-sec__list--ink .faq-item[open] .faq-item__q::after {
  color: var(--hibiscus);
}

.page-faq .faq-sec__list--ink .faq-item__a p {
  color: rgba(244, 239, 230, 0.76);
}

.page-faq .faq-sec__list--ink .faq-item__a a {
  color: var(--pickle);
  border-bottom-color: rgba(227, 178, 60, 0.5);
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 899px) {
  .page-faq .faq-toolbar {
    top: var(--rail-bar-h);
  }

  .page-faq .faq-help__contact > div {
    grid-template-columns: 78px 1fr;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-sec__split {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-sec__figure {
    margin-top: 6px;
  }

  .page-faq .faq-clock {
    grid-template-columns: minmax(0, 2fr);
    gap: 16px;
  }

  .page-faq .faq-clock__row {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }

  .page-faq .faq-clock__d {
    padding-top: 1px;
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-masthead__title {
    max-width: 22ch;
  }
}