.page-faq {
  --faq-rail-w: 220px;
  --faq-gap: clamp(22px, 3.4vw, 48px);
  --faq-panel-indent: 30px;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--blue);
  color: var(--white);
  padding: clamp(88px, 13vw, 150px) 0 clamp(44px, 6vw, 76px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -26%;
  right: -16%;
  width: min(600px, 62%);
  height: 140%;
  background: linear-gradient(165deg, var(--blue-light), rgba(127, 196, 232, 0) 70%);
  opacity: 0.34;
  transform: rotate(7deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--orange) 0 22%,
    var(--sand) 22% 44%,
    var(--green) 44% 70%,
    var(--blue-light) 70% 100%
  );
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--faq-gap);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.page-faq .faq-hero .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.7);
}

.page-faq .faq-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb a:hover,
.page-faq .faq-hero .breadcrumb a:focus-visible {
  color: var(--white);
  text-decoration: underline;
}

.page-faq .faq-hero__eyebrow {
  display: block;
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--sand);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 14em;
}

.page-faq .faq-hero__intro {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.86);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: var(--blue-deep);
  box-shadow: 0 1px 0 rgba(10, 46, 77, 0.4);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

/* 首屏三条高频问答 */
.page-faq .faq-quick {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 14px;
  margin-top: clamp(34px, 5vw, 54px);
}

.page-faq .faq-quick__item {
  background: var(--white);
  color: var(--ink);
  border: 1px solid var(--line);
  border-top: 3px solid var(--orange);
  padding: 20px 20px 22px;
  box-shadow: 0 1px 0 rgba(10, 46, 77, 0.06);
}

.page-faq .faq-quick__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .faq-quick__q {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.42;
  letter-spacing: -0.01em;
}

.page-faq .faq-quick__a {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--gray-blue);
}

/* ============ 主体布局 ============ */
.page-faq .faq-body {
  background: var(--white);
  padding: clamp(40px, 6vw, 84px) 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(26px, 3.6vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

/* 左侧主题导航 */
.page-faq .faq-rail {
  border-left: 2px solid var(--line);
  padding-left: 16px;
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gray-blue);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
}

.page-faq .faq-rail__link {
  display: block;
  padding: 8px 0;
  font-size: 14.5px;
  color: var(--gray-blue);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--blue);
  border-bottom-color: var(--blue-light);
}

.page-faq .faq-rail__no {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue-light);
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-blue);
}

.page-faq .faq-rail__note a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============ 章节头 ============ */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(44px, 6vw, 80px);
  padding-top: clamp(32px, 4vw, 52px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group .sec-head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-group .sec-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .faq-group .sec-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-group .sec-sub {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray-blue);
}

/* ============ 三步流程 ============ */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 clamp(26px, 3.4vw, 40px);
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-steps__item {
  position: relative;
  background: var(--blue-mist);
  padding: 22px 20px 24px;
}

.page-faq .faq-steps__no {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--blue);
}

.page-faq .faq-steps__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 16.5px;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .faq-steps__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--gray-blue);
}

.page-faq .faq-start-media {
  margin: 0;
  max-width: 640px;
  border: 1px solid var(--line);
  background: var(--blue-mist);
}

.page-faq .faq-start-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 7;
  object-fit: cover;
}

.page-faq .faq-start-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray-blue);
}

/* ============ 折叠问答 ============ */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

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

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

.page-faq .faq-item__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 0;
  margin: 0;
  background: none;
  border: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(15.5px, 1.7vw, 17.5px);
  line-height: 1.52;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: color 0.2s var(--ease);
}

.page-faq .faq-item__trigger:hover {
  color: var(--blue);
}

.page-faq .faq-item__trigger:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--blue-light);
}

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

.page-faq .disclosure__icon {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 4px;
}

.page-faq .disclosure__icon::before,
.page-faq .disclosure__icon::after {
  content: "";
  position: absolute;
  background: var(--blue);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.page-faq .disclosure__icon::before {
  left: 3px;
  top: 9px;
  width: 14px;
  height: 2px;
}

.page-faq .disclosure__icon::after {
  left: 9px;
  top: 3px;
  width: 2px;
  height: 14px;
}

.page-faq .disclosure[data-open] .disclosure__icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__panel {
  padding: 0 0 22px var(--faq-panel-indent);
}

.page-faq .faq-item__panel p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--gray-blue);
}

.page-faq .faq-item__panel p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__panel a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__panel a:hover,
.page-faq .faq-item__panel a:focus-visible {
  color: var(--orange);
}

/* 无脚本时保证内容可读 */
.page-faq .disclosure__panel {
  display: block;
}

.page-faq .disclosure:not([data-open]) > .faq-item__panel {
  display: none;
}

/* ============ 联系区块 ============ */
.page-faq .faq-contact {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(6px, 1.5vw, 14px);
  padding: clamp(26px, 3.6vw, 42px);
  background: var(--blue-deep);
  color: var(--white);
  border-left: 4px solid var(--orange);
}

.page-faq .faq-contact__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--blue-light);
}

.page-faq .faq-contact__line {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.35;
}

.page-faq .faq-contact__line a {
  color: var(--white);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
}

.page-faq .faq-contact__line a:hover,
.page-faq .faq-contact__line a:focus-visible {
  color: var(--sand);
  border-bottom-color: var(--sand);
}

.page-faq .faq-contact__line--num {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-faq .faq-contact__note {
  margin: 16px 0 0;
  max-width: 38em;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.74);
}

.page-faq .faq-contact__aside {
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  padding-top: 20px;
}

.page-faq .faq-contact__aside-title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--sand);
}

.page-faq .faq-contact__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact__links a {
  color: var(--white);
  font-size: 14.5px;
  line-height: 1.6;
  text-decoration: none;
}

.page-faq .faq-contact__links a:hover,
.page-faq .faq-contact__links a:focus-visible {
  color: var(--sand);
}

/* ============ 响应式 ============ */
@media (min-width: 700px) {
  .page-faq {
    --faq-panel-indent: 40px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-faq .faq-quick > :nth-child(2) {
    margin-top: 20px;
  }

  .page-faq .faq-quick > :nth-child(3) {
    margin-top: 40px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    padding-left: 18px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-contact__aside {
    border-top: 0;
    border-left: 1px solid rgba(255, 255, 255, 0.22);
    padding-top: 0;
    padding-left: clamp(22px, 3vw, 36px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__trigger,
  .page-faq .disclosure__icon::before,
  .page-faq .disclosure__icon::after {
    transition: none;
  }
}