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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4vw, 46px) 0 clamp(44px, 7vw, 86px);
  background:
    radial-gradient(120% 140% at 88% 6%, rgba(255, 106, 26, 0.26) 0%, rgba(255, 106, 26, 0) 52%),
    linear-gradient(155deg, var(--blue-900) 0%, var(--blue-700) 62%, var(--blue-500) 100%);
  color: var(--white);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -46%;
  width: 62%;
  height: 130%;
  background: linear-gradient(120deg, rgba(78, 140, 184, 0.34), rgba(4, 24, 43, 0));
  transform: rotate(-18deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  width: var(--shell);
  margin-inline: auto;
}

.page-faq .faq-crumbs .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(22px, 3vw, 34px);
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
}

.page-faq .faq-crumbs .breadcrumb__item {
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.92);
}

.page-faq .faq-crumbs .breadcrumb__item:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: rgba(255, 255, 255, 0.34);
}

.page-faq .faq-crumbs a {
  color: rgba(255, 255, 255, 0.68);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--lime-400);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--orange-300);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 18ch;
  font-size: clamp(2.2rem, 6.4vw, 4.4rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lead {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 640px;
  font-size: clamp(1rem, 1.3vw, 1.0625rem);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  color: var(--lime-400);
}

.page-faq .faq-hero__label {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.68);
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-shell {
  width: var(--shell);
  margin-inline: auto;
  padding: clamp(30px, 5vw, 66px) 0 clamp(56px, 8vw, 104px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

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

/* ---------- 左侧分类目录 ---------- */
.page-faq .faq-rail {
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--gray-500);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--gray-100);
  color: var(--blue-700);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-rail__link::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0;
  transition: opacity 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--blue-700);
  color: var(--white);
}

.page-faq .faq-rail__link.is-active,
.page-faq .faq-rail__link[aria-current="true"] {
  background: var(--blue-700);
  color: var(--white);
}

.page-faq .faq-rail__link.is-active::before,
.page-faq .faq-rail__link[aria-current="true"]::before {
  opacity: 1;
  background: var(--lime-400);
}

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

/* ---------- 分类区块 ---------- */
.page-faq .faq-cat {
  scroll-margin-top: 104px;
}

.page-faq .faq-cat + .faq-cat {
  margin-top: clamp(40px, 5vw, 66px);
  padding-top: clamp(34px, 4.5vw, 56px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-cat__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  align-items: start;
  margin-bottom: clamp(14px, 2.2vw, 24px);
}

.page-faq .faq-cat__num {
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2vw, 1.5rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--orange-500);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-size: clamp(1.4rem, 2.6vw, 2.05rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--blue-900);
}

.page-faq .faq-cat__lead {
  margin: 8px 0 0;
  max-width: 620px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--gray-500);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  position: relative;
  border-top: 1px solid var(--line);
}

.page-faq .qa:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background: var(--orange-500);
  opacity: 0;
  transition: opacity 0.2s var(--ease);
}

.page-faq .qa:hover::before,
.page-faq .qa[open]::before {
  opacity: 1;
}

.page-faq .qa__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: clamp(10px, 1.6vw, 18px);
  padding: clamp(16px, 2.4vw, 22px) 46px clamp(16px, 2.4vw, 22px) 18px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--blue-900);
  transition: color 0.2s var(--ease);
}

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

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

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  top: clamp(14px, 2.2vw, 20px);
  right: 6px;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--orange-500);
  transition: color 0.2s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
  color: var(--blue-700);
}

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--blue-500);
}

.page-faq .qa__num {
  flex: 0 0 auto;
  min-width: 1.7em;
  padding-top: 0.28em;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--orange-500);
}

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

.page-faq .qa__a {
  max-width: 700px;
  padding: 0 clamp(18px, 2.4vw, 30px) clamp(20px, 2.6vw, 30px) 18px;
}

.page-faq .qa__a p {
  margin: 0 0 0.8em;
  max-width: 640px;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--ink);
}

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

.page-faq .qa__a a {
  color: var(--blue-500);
  text-decoration: none;
  border-bottom: 1px solid var(--orange-500);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--orange-500);
}

/* ---------- 图文 ---------- */
.page-faq .faq-figure {
  margin: clamp(18px, 2.6vw, 30px) 0 clamp(6px, 1.4vw, 12px);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 0.8125rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--gray-500);
}

.page-faq .faq-figure--inline {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding-left: 18px;
  max-width: 720px;
}

/* ---------- 流程步骤 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 16px;
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding: 0 0 0 18px;
  list-style: none;
}

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

.page-faq .faq-steps__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--orange-500);
}

.page-faq .faq-steps__label {
  display: block;
  margin-top: 2px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-900);
}

.page-faq .faq-steps__desc {
  display: block;
  margin-top: 4px;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--gray-500);
}

/* ---------- 联系入口 ---------- */
.page-faq .faq-cta {
  position: relative;
  margin-top: clamp(44px, 6vw, 78px);
  padding: clamp(28px, 4vw, 54px);
  background: linear-gradient(140deg, var(--blue-900) 0%, var(--blue-700) 100%);
  color: var(--white);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-faq .faq-cta__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--lime-400);
}

.page-faq .faq-cta__title {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.page-faq .faq-cta__text {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 640px;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.8);
}

.page-faq .faq-cta__btn {
  margin-top: clamp(20px, 2.6vw, 28px);
  text-decoration: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
  }

  .page-faq .faq-hero__fact {
    padding: 18px 20px 0 0;
    border-right: 1px solid rgba(255, 255, 255, 0.14);
  }

  .page-faq .faq-hero__fact:last-child {
    border-right: 0;
  }
}

@media (min-width: 768px) {
  .page-faq .qa__a {
    padding-left: 54px;
  }

  .page-faq .faq-figure--inline {
    padding-left: 54px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 28px;
    padding-left: 54px;
  }

  .page-faq .faq-steps__item {
    border-top: 2px solid var(--blue-300);
    padding-top: 14px;
  }

  .page-faq .faq-steps__item:first-child {
    border-top-color: var(--orange-500);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: clamp(38px, 4vw, 76px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 108px;
    border-bottom: 0;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 4px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-rail__link {
    min-height: 0;
    padding: 8px 12px;
    border-radius: 8px;
    background: transparent;
    color: var(--gray-500);
    font-weight: 500;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: var(--gray-100);
    color: var(--blue-700);
  }

  .page-faq .faq-rail__link.is-active,
  .page-faq .faq-rail__link[aria-current="true"] {
    background: var(--blue-700);
    color: var(--white);
    font-weight: 700;
  }

  .page-faq .faq-rail__card {
    display: block;
    margin-top: 26px;
    padding: 18px 20px;
    background: var(--gray-100);
    border-left: 4px solid var(--orange-500);
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  }

  .page-faq .faq-rail__cardLabel {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    color: var(--gray-500);
  }

  .page-faq .faq-rail__cardValue {
    margin: 6px 0 0;
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--blue-700);
  }

  .page-faq .faq-rail__cardValue span {
    margin-left: 4px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-500);
  }

  .page-faq .faq-rail__cardNote {
    margin: 6px 0 0;
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--gray-500);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-cat__head {
    grid-template-columns: 56px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q,
  .page-faq .qa__q::after,
  .page-faq .qa::before,
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__link::before,
  .page-faq .faq-crumbs a {
    transition: none;
  }
}