.page-faq {
  background: var(--haiou-white);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.6vw, 54px) 0 clamp(38px, 6vw, 80px);
  background:
    radial-gradient(112% 82% at 92% -8%, rgba(31, 182, 193, .22), rgba(31, 182, 193, 0) 62%),
    linear-gradient(166deg, var(--mist-white) 0%, var(--haiou-white) 48%, var(--pale-teal) 100%);
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -46%;
  width: min(600px, 74vw);
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, rgba(6, 42, 74, .07), rgba(255, 122, 47, .06));
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  align-items: center;
}

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

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(1.86rem, 6.4vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.012em;
  color: var(--deep-sea);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 54ch;
  color: var(--voyage-blue);
  font-size: clamp(1rem, 1.6vw, 1.16rem);
  line-height: 1.8;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  font-size: .86rem;
  color: var(--tide-gray);
}

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

.page-faq .faq-hero__meta .mono {
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 500;
  color: var(--deep-sea);
}

.page-faq .faq-hero__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--hairline-teal);
  background: linear-gradient(140deg, var(--pale-teal), var(--mist-white));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 620;
  object-fit: cover;
  mix-blend-mode: multiply;
}

/* ---------- 分组导航 ---------- */
.page-faq .faq-index__title {
  margin-top: 10px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num name"
    "desc desc";
  gap: 5px 14px;
  align-items: baseline;
  padding: 16px 18px;
  text-decoration: none;
  color: var(--deep-sea);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--wave-teal);
  background: var(--mist-white);
  transition: border-color .25s var(--ease), background-color .25s var(--ease), transform .25s var(--ease);
}

.page-faq .faq-index__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 500;
  color: var(--wave-teal);
}

.page-faq .faq-index__name {
  grid-area: name;
  font-size: 1.04rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-index__desc {
  grid-area: desc;
  font-size: .87rem;
  line-height: 1.65;
  color: var(--tide-gray);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-left-color: var(--wing-orange);
  background: var(--pale-teal);
  transform: translateX(4px);
}

/* ---------- 热门问题 ---------- */
.page-faq .faq-hot {
  margin-top: clamp(32px, 4.4vw, 54px);
  padding-top: 22px;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-hot__title {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--deep-sea);
}

.page-faq .faq-hot__list {
  counter-reset: faqhot;
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 0 28px;
}

.page-faq .faq-hot__list li {
  counter-increment: faqhot;
  min-width: 0;
}

.page-faq .faq-hot__list a {
  display: block;
  position: relative;
  padding: 11px 0 11px 36px;
  color: var(--voyage-blue);
  text-decoration: none;
  line-height: 1.6;
  border-bottom: 1px solid var(--hairline);
  transition: color .22s var(--ease), padding-left .22s var(--ease);
}

.page-faq .faq-hot__list a::before {
  content: counter(faqhot, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 500;
  color: var(--wave-teal);
  transition: color .22s var(--ease);
}

.page-faq .faq-hot__list a:hover,
.page-faq .faq-hot__list a:focus-visible {
  color: var(--wing-orange);
  padding-left: 42px;
}

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

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-faq .faq-aside {
  display: none;
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-top: clamp(46px, 7vw, 86px);
  scroll-margin-top: calc(var(--bar-h-min) + 24px);
}

.page-faq .faq-group:first-child {
  margin-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--deep-sea);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 6vw, 3.1rem);
  font-weight: 700;
  line-height: .88;
  letter-spacing: -.03em;
  color: rgba(31, 182, 193, .5);
}

.page-faq .faq-group__head > div {
  min-width: 0;
}

.page-faq .faq-group__head .sec-title {
  margin: 0;
}

.page-faq .faq-group__sub {
  margin: 7px 0 0;
  font-size: .9rem;
  line-height: 1.6;
  color: var(--tide-gray);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-group__items {
  margin-top: 2px;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--hairline);
  transition: background-color .25s var(--ease);
}

.page-faq .faq-item:first-of-type {
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-item > summary {
  color: var(--deep-sea);
  font-weight: 600;
  line-height: 1.65;
  transition: color .22s var(--ease);
}

.page-faq .faq-item > summary:hover {
  color: var(--wing-orange);
}

.page-faq .faq-answer {
  background: transparent;
  color: var(--ink);
  font-size: .96rem;
  line-height: 1.85;
  max-width: 64ch;
  border-left: 3px solid transparent;
  transition: background-color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-item[open] .faq-answer {
  background: var(--pale-teal);
  border-left-color: var(--wave-teal);
  padding: 14px 16px 12px;
  margin: 2px 0 14px;
  animation: faqReveal .26s var(--ease) both;
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-mark {
  margin-top: 12px !important;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--tide-gray);
}

.page-faq .faq-mark::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 1px;
  vertical-align: middle;
  margin-right: 8px;
  background: var(--tide-gray);
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-group__back {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .05em;
  color: var(--tide-gray);
  text-decoration: none;
  transition: color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .faq-group__back:hover,
.page-faq .faq-group__back:focus-visible {
  color: var(--wing-orange);
  transform: translateX(4px);
}

/* ---------- 分组内配图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 4px;
  padding-left: 16px;
  border-left: 3px solid var(--wing-orange);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 960 / 580;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-faq .faq-figure__caption {
  margin-top: 10px;
  font-size: .82rem;
  line-height: 1.6;
  color: var(--tide-gray);
}

/* ---------- 收束带 ---------- */
.page-faq .faq-cta {
  color: var(--haiou-white);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 22px;
}

.page-faq .faq-cta .sec-title {
  color: var(--mist-white);
}

.page-faq .faq-cta p {
  margin: 14px 0 0;
  max-width: 58ch;
  color: rgba(247, 250, 252, .82);
  line-height: 1.8;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-cta .btn--ghost {
  color: var(--haiou-white);
  border-color: rgba(247, 250, 252, .42);
}

.page-faq .faq-cta .btn--ghost:hover,
.page-faq .faq-cta .btn--ghost:focus-visible {
  color: var(--wing-orange);
  border-color: var(--wing-orange);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hot__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hero__meta {
    gap: 8px 34px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1.45fr) auto;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 224px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-aside {
    display: block;
  }

  .page-faq .side-index {
    position: sticky;
    top: calc(var(--bar-h-min) + 28px);
    display: grid;
    gap: 2px;
  }

  .page-faq .side-index__link {
    font-size: .88rem;
    line-height: 1.5;
    text-decoration: none;
    transition: color .22s var(--ease), transform .22s var(--ease);
  }

  .page-faq .side-index__link:hover {
    color: var(--wing-orange);
    transform: translateX(4px);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}