.page-faq {
  --faq-ease: cubic-bezier(.22, .68, .3, 1);
  background: var(--paper-cold);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 46px) 0 clamp(30px, 5vw, 54px);
  background:
    linear-gradient(180deg, rgba(30, 127, 184, .12), rgba(30, 127, 184, 0) 72%),
    var(--paper-cold);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(22, 34, 46, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22, 34, 46, .055) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 16px;
  padding-left: 11px;
  border-left: 3px solid var(--cat-repair);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cat-repair);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  max-width: 20ch;
  font-size: clamp(28px, 6.2vw, 56px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: 0 0 26px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__quick li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 16px 10px 13px;
  background: var(--paper-warm);
  border: 1px solid var(--line-paper);
  border-radius: 4px;
  box-shadow: 3px 3px 0 rgba(22, 34, 46, .07);
  font-size: 13.5px;
  color: var(--ink-soft);
}

.page-faq .faq-hero__quick .mono {
  font-size: 21px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink);
}

/* ---------- 页面骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding-top: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(40px, 7vw, 78px);
}

/* ---------- 分组索引 ---------- */
.page-faq .faq-index {
  padding: 18px 16px;
  background: var(--paper-warm);
  border: 1px solid var(--line-paper);
  border-radius: 6px;
  box-shadow: 4px 4px 0 rgba(22, 34, 46, .05);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--mist);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 8px;
  border-left: 3px solid transparent;
  border-radius: 3px;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--ink-soft);
  text-decoration: none;
  transition: background .2s var(--faq-ease), border-color .2s var(--faq-ease), color .2s var(--faq-ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--paper-cold);
  border-left-color: var(--cat-clean);
  color: var(--ink);
}

.page-faq .faq-index__no {
  flex: none;
  font-size: 12px;
  color: var(--mist);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-main {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  min-width: 0;
}

.page-faq .faq-group {
  position: relative;
  scroll-margin-top: 104px;
  padding: clamp(18px, 3vw, 28px);
  background: var(--paper-warm);
  border: 1px solid var(--line-paper);
  border-radius: 8px;
  box-shadow: var(--shadow-panel);
  --group-accent: var(--cat-clean);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 22px;
  right: 22px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--group-accent);
}

.page-faq .faq-group--tenure { --group-accent: var(--cat-repair); }
.page-faq .faq-group--visit  { --group-accent: var(--cat-pipe); }
.page-faq .faq-group--money  { --group-accent: var(--cat-house); }
.page-faq .faq-group--after  { --group-accent: var(--warn-3); }

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__no {
  font-size: clamp(26px, 5vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--group-accent);
}

.page-faq .faq-group__title {
  flex: 1 1 auto;
  margin: 0;
  font-size: clamp(19px, 3vw, 25px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-group__count {
  padding: 3px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: 11.5px;
  color: var(--mist);
  white-space: nowrap;
}

.page-faq .faq-list {
  display: grid;
}

/* ---------- 单条问答 ---------- */
.page-faq .qa {
  border-bottom: 1px dashed var(--line);
}

.page-faq .qa:last-child {
  border-bottom: 0;
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 16px 6px 16px 12px;
  border-left: 3px solid transparent;
  cursor: pointer;
  list-style: none;
  transition: background .2s var(--faq-ease), border-color .2s var(--faq-ease);
}

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

.page-faq .qa__q:hover {
  background: rgba(220, 233, 242, .55);
  border-left-color: var(--group-accent);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cat-clean);
  outline-offset: -2px;
}

.page-faq .qa[open] > .qa__q {
  background: rgba(220, 233, 242, .45);
  border-left-color: var(--group-accent);
}

.page-faq .qa__mark {
  padding-top: 3px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--group-accent);
}

.page-faq .qa__text {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

.page-faq .qa__icon {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: border-color .2s var(--faq-ease);
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
  color: var(--group-accent);
  transform: translate(-50%, -50%);
}

.page-faq .qa__icon::before {
  width: 8px;
  height: 1.5px;
}

.page-faq .qa__icon::after {
  width: 1.5px;
  height: 8px;
  transition: transform .25s var(--faq-ease);
}

.page-faq .qa[open] .qa__icon {
  border-color: var(--group-accent);
}

.page-faq .qa[open] .qa__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa__a {
  padding: 2px 12px 20px 42px;
}

.page-faq .qa[open] > .qa__a {
  animation: faq-reveal .26s var(--faq-ease) both;
}

@keyframes faq-reveal {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

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

.page-faq .qa__a a {
  color: var(--cat-clean);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

/* ---------- 插图 ---------- */
.page-faq .faq-shot {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 16px 0 4px;
  padding: 14px 16px;
  background: var(--paper-cold);
  border: 1px solid var(--line-paper);
  border-radius: 6px;
}

.page-faq .faq-shot img {
  flex: none;
  display: block;
  height: auto;
  max-width: 100%;
  border-radius: 4px;
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-shot--tall img { width: 146px; }
.page-faq .faq-shot--wide img { width: 216px; }

.page-faq .faq-shot figcaption {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 右侧常驻栏 ---------- */
.page-faq .faq-help {
  position: relative;
  overflow: hidden;
  padding: 24px 20px 22px;
  background: var(--ink);
  border-radius: 8px;
  box-shadow: var(--shadow-float);
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--warn-1), var(--warn-2), var(--warn-3));
}

.page-faq .faq-help__no {
  display: block;
  margin: 4px 0 8px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--warn-2);
}

.page-faq .faq-help__title {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 800;
  color: #FFFFFF;
}

.page-faq .faq-help__lead {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(220, 233, 242, .82);
}

.page-faq .faq-help__contact {
  margin: 0 0 16px;
}

.page-faq .faq-help__contact dt {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: rgba(220, 233, 242, .55);
}

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

.page-faq .faq-help__contact dd {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: #FFFFFF;
}

.page-faq .faq-help__mail {
  font-size: 11.5px;
  letter-spacing: -.01em;
  word-break: break-all;
}

.page-faq .faq-help__note,
.page-faq .faq-help__coop {
  margin: 0 0 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(220, 233, 242, .16);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(220, 233, 242, .75);
}

.page-faq .faq-help__coop {
  margin-bottom: 0;
}

.page-faq .faq-help__coop a {
  color: var(--warn-1);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 中屏 ---------- */
@media (max-width: 1023px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-help {
    max-width: 520px;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-help {
    max-width: none;
  }
  .page-faq .faq-shot {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .page-faq .faq-shot--tall img,
  .page-faq .faq-shot--wide img {
    width: 100%;
    max-width: 260px;
  }
  .page-faq .qa__q {
    gap: 10px;
    padding-left: 9px;
  }
  .page-faq .qa__a {
    padding: 2px 4px 18px 30px;
  }
}

/* ---------- 大屏三栏 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: 190px minmax(0, 1fr) 220px;
    gap: 28px;
    align-items: start;
  }

  .page-faq .faq-index,
  .page-faq .faq-help {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-group:nth-child(even) {
    margin-left: 22px;
  }

  .page-faq .faq-hero__title {
    max-width: 16ch;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q,
  .page-faq .qa__icon,
  .page-faq .qa__icon::after,
  .page-faq .faq-index__list a {
    transition: none;
  }
  .page-faq .qa[open] > .qa__a {
    animation: none;
  }
}