.page-faq {
  --faq-gap: clamp(18px, 2.4vw, 30px);
  --faq-hair: rgba(201, 211, 222, 0.2);
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding: 22px 0 8px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: 10px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: end;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--cold-white);
  max-width: 15em;
}

.page-faq .faq-hero__title::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin-top: 18px;
  background: var(--red);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 34em;
  color: var(--silver);
  font-size: 16px;
  line-height: 1.78;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-faq .media__frame {
  border: 1px solid var(--faq-hair);
  background: var(--blue-steel);
  overflow: hidden;
}

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

.page-faq .media__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--silver);
  opacity: 0.78;
}

/* ---------- 三段标签 ---------- */
.page-faq .faq-stages {
  list-style: none;
  margin: clamp(26px, 3.5vw, 46px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

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

.page-faq .faq-stage {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num name"
    "num desc";
  gap: 4px 14px;
  padding: 18px 20px 18px 24px;
  border: 1px solid var(--faq-hair);
  background: var(--blue-steel);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-stage::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--red);
  transform: scaleY(0.28);
  transform-origin: top;
  transition: transform 0.18s steps(2, end);
}

.page-faq .faq-stage:hover,
.page-faq .faq-stage:focus-visible {
  border-color: var(--red);
  background: #1b3049;
}

.page-faq .faq-stage:hover::before,
.page-faq .faq-stage:focus-visible::before {
  transform: scaleY(1);
}

.page-faq .faq-stage__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--red);
}

.page-faq .faq-stage__name {
  grid-area: name;
  font-size: 17px;
  font-weight: 800;
  color: var(--cold-white);
  letter-spacing: -0.01em;
}

.page-faq .faq-stage__desc {
  grid-area: desc;
  font-size: 13px;
  line-height: 1.65;
  color: var(--silver);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(38px, 5vw, 68px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 56px);
}

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

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(26px, 3.2vw, 40px);
  border-top: 1px solid var(--faq-hair);
  scroll-margin-top: 92px;
}

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

.page-faq .faq-group + .faq-group {
  margin-top: clamp(32px, 4vw, 56px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  margin-bottom: 14px;
}

.page-faq .faq-group__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(226, 58, 46, 0.9);
}

.page-faq .faq-group__title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 900;
  line-height: 1.32;
  letter-spacing: -0.015em;
  color: var(--cold-white);
}

.page-faq .faq-group__text {
  grid-column: 2;
  grid-row: 2;
  margin: 10px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

/* ---------- 折叠问答 ---------- */
.page-faq .accordion {
  margin-top: 14px;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .accordion__item {
  position: relative;
  border-bottom: 1px solid var(--faq-hair);
  padding-left: 16px;
}

.page-faq .accordion__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--red);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.18s steps(2, end);
}

.page-faq .accordion__item:has([aria-expanded="true"])::before {
  transform: scaleY(1);
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  width: 100%;
  padding: 22px 0;
  margin: 0;
  background: none;
  border: 0;
  font: inherit;
  text-align: left;
  cursor: pointer;
  color: inherit;
}

.page-faq .accordion__idx {
  flex: none;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--red);
}

.page-faq .accordion__text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--cold-white);
  transition: color 0.18s ease;
}

.page-faq .accordion__trigger:hover .accordion__text {
  color: var(--red);
}

.page-faq .accordion__sign {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 7px;
}

.page-faq .accordion__sign::before,
.page-faq .accordion__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--silver);
}

.page-faq .accordion__sign::before {
  width: 16px;
  height: 1px;
  transform: translate(-50%, -50%);
}

.page-faq .accordion__sign::after {
  width: 1px;
  height: 16px;
  transform: translate(-50%, -50%);
  transition: transform 0.18s steps(2, end);
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__sign::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .accordion__panel {
  padding: 0 0 24px 0;
}

.page-faq .accordion__panel p {
  margin: 0 0 12px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

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

.page-faq .accordion__panel a {
  color: var(--std-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.page-faq .accordion__panel a:hover,
.page-faq .accordion__panel a:focus-visible {
  border-bottom-color: var(--std-blue);
}

.page-faq .faq-a__tip {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  padding: 12px 14px;
  background: var(--blue-steel);
  border-left: 2px solid var(--red);
  font-size: 14px !important;
}

.page-faq .faq-a__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass);
  padding-top: 3px;
}

/* ---------- 表格卡片 ---------- */
.page-faq .faq-table-card {
  margin: 20px 0 6px;
  padding: 4px 0 0;
  border: 1px solid var(--faq-hair);
  background: rgba(22, 41, 61, 0.62);
}

.page-faq .faq-paper {
  margin: 22px 0 6px;
  padding: 4px 0 0;
  background: var(--paper);
  border: 1px solid rgba(11, 27, 43, 0.14);
}

.page-faq .faq-table-card__cap {
  padding: 14px 16px 10px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass);
}

.page-faq .faq-paper .faq-table-card__cap {
  color: var(--copper);
}

.page-faq .faq-table-card .data-table,
.page-faq .faq-paper .data-table {
  min-width: 640px;
}

.page-faq .faq-paper .data-table {
  color: var(--ink);
}

.page-faq .faq-paper .data-table thead th {
  color: var(--ink-soft);
  border-bottom-color: rgba(11, 27, 43, 0.3);
}

.page-faq .faq-paper .data-table tbody th {
  color: var(--ink);
}

.page-faq .faq-paper .data-table td {
  color: var(--ink);
  border-bottom-color: rgba(11, 27, 43, 0.13);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 0;
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-side {
  min-width: 0;
}

.page-faq .faq-side__note {
  border-top: 2px solid var(--red);
  padding-top: 16px;
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.page-faq .faq-side__list li + li {
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-side__list a {
  position: relative;
  display: block;
  padding: 12px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--cold-white);
  text-decoration: none;
  transition: color 0.18s ease, padding-left 0.18s ease;
}

.page-faq .faq-side__list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1px;
  background: var(--red);
  transform: translateY(-50%);
  transition: width 0.2s ease;
}

.page-faq .faq-side__list a:hover,
.page-faq .faq-side__list a:focus-visible {
  color: var(--red);
  padding-left: 18px;
}

.page-faq .faq-side__list a:hover::before,
.page-faq .faq-side__list a:focus-visible::before {
  width: 12px;
}

/* ---------- 咨询卡片 ---------- */
.page-faq .faq-group--ask {
  padding-bottom: 8px;
}

.page-faq .faq-ask {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 6px;
}

.page-faq .faq-ask__card {
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid var(--faq-hair);
  border-left: 2px solid var(--red);
  background: var(--blue-steel);
}

.page-faq .faq-ask__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass);
}

.page-faq .faq-ask__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 19px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cold-white);
  word-break: break-all;
}

.page-faq .faq-ask__text {
  margin: 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .faq-ask__more {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .faq-ask__more a {
  color: var(--std-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.page-faq .faq-ask__more a:hover,
.page-faq .faq-ask__more a:focus-visible {
  border-bottom-color: var(--std-blue);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-stages {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-ask__card--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(0, 1fr) 272px;
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-stage,
  .page-faq .faq-stage::before,
  .page-faq .accordion__item::before,
  .page-faq .accordion__sign::after,
  .page-faq .accordion__text,
  .page-faq .faq-side__list a,
  .page-faq .faq-side__list a::before {
    transition: none;
  }
}