.page-faq {
  --faq-line: var(--g700);
  --faq-cut-lg: 26px;
  --faq-cut-sm: 17px;
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding: 18px 0 6px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--t400);
}
.page-faq .faq-crumb a {
  color: var(--t400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--fg400);
  border-bottom-color: var(--fg400);
}
.page-faq .faq-crumb [aria-current="page"] {
  color: var(--t100);
}

/* ---------- 区块节奏 ---------- */
.page-faq .faq-band {
  padding: clamp(26px, 5vw, 54px) 0;
}
.page-faq .faq-band + .faq-band {
  border-top: 1px solid var(--faq-line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  padding-top: clamp(18px, 3.4vw, 38px);
}
.page-faq .faq-intro__title {
  margin: 14px 0 0;
  max-width: 22ch;
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.01em;
}
.page-faq .faq-intro__lede {
  margin: 20px 0 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.95;
  color: var(--t100);
}

.page-faq .faq-stats {
  margin: clamp(24px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--faq-line);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-stats > li {
  background: var(--g900);
  padding: 16px 18px;
}
.page-faq .faq-stats .num {
  display: block;
  font-family: var(--f-mono);
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fg400);
}
.page-faq .faq-stats small {
  display: block;
  margin-top: 9px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--t400);
}

/* ---------- 三环节流程带 ---------- */
.page-faq .faq-flow__hint {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--t400);
}
.page-faq .faq-flow__track {
  margin-top: clamp(18px, 3vw, 30px);
  padding: clamp(18px, 3vw, 30px) clamp(16px, 3vw, 34px);
  background: linear-gradient(180deg, var(--g800) 0%, var(--g900) 82%);
  border: 1px solid var(--faq-line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-lg)) 0, 100% var(--faq-cut-lg), 100% 100%, 0 100%);
}
.page-faq .faq-flow__svg {
  display: block;
  width: 100%;
  height: auto;
}
.page-faq .ff-line {
  stroke: var(--g700);
  stroke-width: 2;
}
.page-faq .ff-tick {
  stroke: var(--g700);
  stroke-width: 1;
}
.page-faq .ff-node {
  fill: var(--g900);
  stroke-width: 3;
}
.page-faq .ff-node--in { stroke: var(--fg400); }
.page-faq .ff-node--check { stroke: var(--cb600); }
.page-faq .ff-node--audit { stroke: var(--ag500); }

.page-faq .faq-flow__legend {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-faq .faq-flow__step {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--faq-line);
}
.page-faq .faq-flow__step--in { border-left-color: var(--fg400); }
.page-faq .faq-flow__step--check { border-left-color: var(--cb600); }
.page-faq .faq-flow__step--audit { border-left-color: var(--ag500); }
.page-faq .faq-flow__step .num {
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--t400);
}
.page-faq .faq-flow__step b {
  font-family: var(--f-head);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--t100);
}
.page-faq .faq-flow__step-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--t400);
}

/* ---------- 问答列表头 ---------- */
.page-faq .faq-list__lede {
  margin: 12px 0 0;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--t400);
}

/* ---------- 配图 ---------- */
.page-faq .faq-fig {
  margin: clamp(22px, 3.4vw, 34px) 0 0;
}
.page-faq .faq-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--g800);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-lg)) 0, 100% var(--faq-cut-lg), 100% 100%, 0 100%);
}
.page-faq .faq-fig figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--t400);
}
.page-faq .faq-fig--flow {
  margin-top: 0;
}

/* ---------- 筛选 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(18px, 3vw, 28px);
}
.page-faq .faq-filter .filter-btn {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  padding: 8px 14px;
  color: var(--t400);
  background: var(--g800);
  border: 1px solid var(--faq-line);
  cursor: pointer;
  transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease;
}
.page-faq .faq-filter .filter-btn:hover {
  color: var(--t100);
  border-color: var(--cb600);
}
.page-faq .faq-filter .filter-btn:focus-visible {
  outline: 2px solid var(--fg400);
  outline-offset: -3px;
}
.page-faq .faq-filter .filter-btn[aria-pressed="true"],
.page-faq .faq-filter .filter-btn.is-active {
  color: var(--g900);
  background: var(--fg400);
  border-color: var(--fg400);
}

.page-faq .faq-count {
  margin: 14px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--t400);
}
.page-faq .faq-count .num {
  font-family: var(--f-mono);
  font-size: 14px;
  color: var(--fg400);
}

/* ---------- 折叠列表 ---------- */
.page-faq .faq-items {
  margin-top: 16px;
  display: grid;
  gap: 1px;
  background: var(--faq-line);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-item {
  background: var(--g900);
  transition: background-color 0.18s ease;
}
.page-faq .faq-item:hover {
  background: var(--g800);
}
.page-faq .faq-item__title {
  margin: 0;
  font-size: 1em;
  font-weight: inherit;
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 18px;
  align-items: start;
  gap: 12px;
  width: 100%;
  padding: 16px clamp(14px, 2.4vw, 26px);
  background: none;
  border: 0;
  color: inherit;
  text-align: left;
  cursor: pointer;
  appearance: none;
}
.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--fg400);
  outline-offset: -3px;
}
.page-faq .faq-q__idx {
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  line-height: 1.75;
  color: var(--cb600);
}
.page-faq .faq-q__text {
  font-family: var(--f-head);
  font-size: clamp(15.5px, 2.1vw, 19px);
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--t100);
}
.page-faq .faq-q:hover .faq-q__text {
  color: var(--fg400);
}

.page-faq .faq-q .fold__icon {
  position: relative;
  display: block;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  justify-self: end;
}
.page-faq .faq-q .fold__icon::before,
.page-faq .faq-q .fold__icon::after {
  content: "";
  position: absolute;
  background: var(--t400);
  transition: transform 0.22s ease, opacity 0.22s ease, background-color 0.22s ease;
}
.page-faq .faq-q .fold__icon::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}
.page-faq .faq-q .fold__icon::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}
.page-faq .faq-q[aria-expanded="true"] .fold__icon::after {
  transform: scaleY(0);
  opacity: 0;
}
.page-faq .faq-q[aria-expanded="true"] .fold__icon::before {
  background: var(--fg400);
}

/* ---------- 展开内容 ---------- */
.page-faq .faq-a {
  display: grid;
  gap: 12px;
  padding: 0 clamp(14px, 2.4vw, 26px) 22px;
}
.page-faq .faq-a__meta .tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  padding: 4px 9px;
  border: 1px solid currentColor;
}
.page-faq .faq-a__body p {
  margin: 0;
  max-width: 70ch;
  font-size: 15px;
  line-height: 1.95;
  color: var(--t100);
}
.page-faq .faq-a__body p + p,
.page-faq .faq-a__body ul + p {
  margin-top: 12px;
}
.page-faq .faq-a__body a {
  color: var(--fg400);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 242, 78, 0.4);
}
.page-faq .faq-a__body a:hover,
.page-faq .faq-a__body a:focus-visible {
  border-bottom-color: var(--fg400);
}
.page-faq .faq-a__body ul {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.page-faq .faq-a__body li {
  position: relative;
  padding-left: 16px;
  max-width: 70ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--t400);
}
.page-faq .faq-a__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 7px;
  height: 2px;
  background: var(--cb600);
}
.page-faq .faq-a__body .aside-note {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--t400);
}

.page-faq .faq-empty {
  margin: 18px 0 0;
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: var(--ro450);
  border-left: 2px solid var(--ro450);
  padding-left: 12px;
}

/* ---------- 字段与单位速查 ---------- */
.page-faq .faq-gloss__hint {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--t400);
}
.page-faq .faq-gloss__list {
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-line);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-gloss__row {
  background: var(--g900);
  padding: 14px clamp(14px, 2.2vw, 22px);
  display: grid;
  gap: 6px;
  border-left: 2px solid transparent;
  transition: border-color 0.18s ease, background-color 0.18s ease;
  outline: none;
}
.page-faq .faq-gloss__row:hover,
.page-faq .faq-gloss__row:focus-visible {
  background: var(--g800);
  border-left-color: var(--ag500);
}
.page-faq .faq-gloss__term {
  font-family: var(--f-head);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--t100);
}
.page-faq .faq-gloss__term .num {
  display: inline-block;
  margin-right: 10px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--t400);
}
.page-faq .faq-gloss__def {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cb600);
}
.page-faq .faq-gloss__more {
  display: block;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-family: var(--f-body);
  font-size: 13.5px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  color: var(--t400);
  transition: max-height 0.22s ease, opacity 0.22s ease, margin-top 0.22s ease;
}
.page-faq .faq-gloss__row:hover .faq-gloss__more,
.page-faq .faq-gloss__row:focus-visible .faq-gloss__more,
.page-faq .faq-gloss__row:focus-within .faq-gloss__more {
  max-height: 6em;
  opacity: 1;
  margin-top: 6px;
}

/* ---------- 核对提交路径 ---------- */
.page-faq .faq-submit__grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(18px, 3vw, 28px);
}
.page-faq .faq-submit__col p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.95;
  color: var(--t100);
}
.page-faq .faq-submit__col a {
  color: var(--fg400);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 242, 78, 0.4);
}
.page-faq .faq-submit__col a:hover,
.page-faq .faq-submit__col a:focus-visible {
  border-bottom-color: var(--fg400);
}
.page-faq .faq-submit__steps {
  list-style: none;
  margin: 20px 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-submit__steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--t400);
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--g700);
}
.page-faq .faq-submit__steps .num {
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--fg400);
}
.page-faq .faq-submit__col .aside-note {
  margin-top: 0;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--t400);
}
.page-faq .faq-submit__links {
  margin-top: 18px !important;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--t400);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .faq-flow__legend {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-a {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 26px;
    padding-left: calc(clamp(14px, 2.4vw, 26px) + 56px);
  }
  .page-faq .faq-a__meta {
    padding-top: 2px;
  }
  .page-faq .faq-gloss__row {
    grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-submit__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .page-faq .faq-intro__title {
    max-width: 20ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q .fold__icon::before,
  .page-faq .faq-q .fold__icon::after,
  .page-faq .faq-gloss__more,
  .page-faq .faq-gloss__row,
  .page-faq .faq-filter .filter-btn {
    transition: none;
  }
}