.page-faq {
  --faq-cut: 47px;
  --faq-rise: 10px;
  --faq-line-soft: rgba(34, 224, 214, .45);
  padding-bottom: 72px;
}

.page-faq .breadcrumb {
  padding-top: 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 16px 0 34px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 132px;
  height: 3px;
  background: var(--cyan);
  transform: skewX(-12deg);
}

.page-faq .faq-hero .label {
  color: var(--cyan);
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 6.4vw, 52px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--paper-dim);
}

/* ---------- 前置三条 ---------- */
.page-faq .faq-precheck {
  display: grid;
  gap: 1px;
  margin-top: 30px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-rise), 100% 100%, 0 100%);
}

.page-faq .faq-precheck__item {
  background: var(--ink-800);
  padding: 18px 18px 20px;
}

.page-faq .faq-precheck__num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 12px 3px 8px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-numeric);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 100%, 0 100%);
}

.page-faq .faq-precheck__t {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.005em;
  color: var(--paper);
}

.page-faq .faq-precheck__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--paper-dim);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 26px;
  padding-top: 34px;
}

.page-faq .faq-rail {
  border: 1px solid var(--line);
  background: var(--ink-900);
  padding: 14px 12px 12px;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 5px, 100% 100%, 0 100%);
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-numeric);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list li {
  flex: none;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-bottom: 2px solid transparent;
  border-radius: 2px;
  color: var(--paper-dim);
  font-size: 15px;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur), border-color var(--dur), background var(--dur);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  background: var(--panel);
}

.page-faq .faq-rail__list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-rail__list svg {
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  scroll-margin-top: 108px;
}

.page-faq .faq-sec + .faq-sec {
  margin-top: 40px;
  padding-top: 38px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-sec .section-head {
  margin-bottom: 18px;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list .faq-item {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
  transition: color var(--dur);
}

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

.page-faq .faq-item summary:hover {
  color: var(--cyan);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-item__idx {
  flex: none;
  padding-top: 2px;
  font-family: var(--font-numeric);
  font-size: 12px;
  color: var(--cyan);
}

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

.page-faq .faq-item__icon {
  position: relative;
  flex: none;
  align-self: center;
  width: 14px;
  height: 14px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--dur), opacity var(--dur);
}

.page-faq .faq-item__icon::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item[open] summary {
  color: var(--cyan);
}

.page-faq .faq-item__body {
  margin: 0 0 18px 16px;
  padding: 2px 0 6px 20px;
  border-left: 1px solid var(--faq-line-soft);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--paper-dim);
}

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

.page-faq .faq-item__body a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-item__act {
  display: inline-block;
  margin-top: 6px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--cyan-soft);
}

.page-faq .faq-item__act::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 9px;
  background: var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  transform: translateY(-1px);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  background: var(--ink-900);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-rise), 100% 100%, 0 100%);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 差异表 ---------- */
.page-faq .faq-table-wrap {
  margin-top: 24px;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--ink-900);
}

.page-faq .faq-diff {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .faq-diff caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--slate);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-diff th,
.page-faq .faq-diff td {
  padding: 11px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-diff thead th {
  font-family: var(--font-numeric);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-diff tbody th {
  color: var(--paper);
  font-weight: 600;
  white-space: nowrap;
}

.page-faq .faq-diff tbody td {
  color: var(--paper-dim);
}

.page-faq .faq-diff td.is-diff {
  color: var(--amber);
}

.page-faq .faq-diff tbody tr:last-child th,
.page-faq .faq-diff tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-diff tbody tr:hover {
  background: var(--panel);
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 22px 18px 24px;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-rise), 100% 100%, 0 100%);
}

.page-faq .faq-contact__lead {
  margin: 0 0 14px;
  font-size: 15.5px;
  color: var(--paper);
  font-weight: 600;
}

.page-faq .faq-need {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-need li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.page-faq .faq-need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-contact__tip {
  margin: 18px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-contact__tip a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-contact__box {
  margin-top: 22px;
  padding-left: 16px;
  border-left: 2px solid var(--orange);
}

.page-faq .faq-contact__k {
  margin: 0 0 4px;
  font-family: var(--font-numeric);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-contact__mail {
  margin: 0 0 16px;
  font-family: var(--font-numeric);
  font-size: 15.5px;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-contact__phone {
  margin: 0 0 12px;
  font-family: var(--font-numeric);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-faq .faq-contact__time {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-contact .btn {
  min-height: 46px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-precheck {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-precheck__item {
    padding: 22px 22px 24px;
  }

  .page-faq .faq-contact {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 32px;
    padding: 28px 30px 30px;
  }

  .page-faq .faq-contact__box {
    margin-top: 0;
  }
}

/* ---------- 桌面：左侧分类轨道常驻 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 108px;
    padding: 18px 14px 16px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow-x: visible;
  }

  .page-faq .faq-rail__list a {
    border-bottom: 0;
    border-left: 2px solid transparent;
    white-space: normal;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    border-bottom: 0;
    border-left-color: var(--cyan);
  }
}

/* ---------- 宽屏：图文并排 ---------- */
@media (min-width: 880px) {
  .page-faq .faq-access-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: 36px;
    align-items: start;
  }

  .page-faq .faq-access-layout .faq-figure {
    margin-bottom: 0;
    position: sticky;
    top: 108px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-rail__list a,
  .page-faq .faq-item summary {
    transition: none;
  }
}