.page-faq {
  --faq-measure: 38em;
  --faq-rule: var(--paper);
  --faq-num-col: 34px;
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--green-deep);
  color: var(--mist);
  padding: clamp(104px, 15vh, 176px) 0 clamp(36px, 5vw, 60px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(112deg, var(--mist-14) 0 1px, transparent 1px 36px);
  opacity: 0.6;
  pointer-events: none;
}

.page-faq .faq-hero .wh-container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .wh-crumb {
  color: var(--mist-45);
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero .wh-crumb a {
  color: var(--mist-62);
  text-decoration: none;
}

.page-faq .faq-hero .wh-crumb a:hover,
.page-faq .faq-hero .wh-crumb a:focus-visible {
  color: var(--sand);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.3rem, 6.2vw, 5.2rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  max-width: 16ch;
}

.page-faq .faq-hero__lead {
  margin: clamp(20px, 3vw, 34px) 0 0;
  max-width: 34em;
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  line-height: 1.85;
  color: var(--mist-82);
}

.page-faq .faq-hero__mediabox {
  margin-top: clamp(36px, 6vw, 76px);
}

.page-faq .faq-hero__media {
  margin: 0;
  aspect-ratio: 1600 / 520;
  overflow: hidden;
}

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

.page-faq .faq-body {
  padding-top: clamp(48px, 7vw, 96px);
  padding-bottom: clamp(52px, 7vw, 104px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 48px);
}

.page-faq .faq-toc__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--faq-rule);
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 6px 10px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.45;
  text-decoration: none;
  transition: border-color 200ms var(--ease), color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-left-color: var(--blue-bright);
  color: var(--blue-deep);
  background: rgba(44, 134, 176, 0.07);
  outline: none;
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
  white-space: nowrap;
}

.page-faq .faq-toc__num::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--paper);
  vertical-align: middle;
  transition: background-color 200ms var(--ease);
}

.page-faq .faq-toc__link:hover .faq-toc__num::before,
.page-faq .faq-toc__link:focus-visible .faq-toc__num::before {
  background: var(--sand);
}

.page-faq .faq-toc__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .faq-toc__note a {
  color: var(--blue-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-faq .faq-group {
  padding-top: clamp(24px, 4vw, 40px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(28px, 5vw, 56px);
  border-top: 1px solid var(--faq-rule);
}

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

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(10px, 2vw, 18px);
}

.page-faq .faq-group__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sand);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink);
}

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

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule);
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  padding: 20px 0;
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gray);
  padding-top: 4px;
}

.page-faq .faq-item__q {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: color 180ms var(--ease);
}

.page-faq .faq-item > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.4;
  color: var(--blue-bright);
  padding-top: 1px;
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
}

.page-faq .faq-item > summary:hover .faq-item__q,
.page-faq .faq-item > summary:focus-visible .faq-item__q {
  color: var(--blue-deep);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--blue-bright);
  outline-offset: 4px;
}

.page-faq .faq-item[open] > summary {
  padding-bottom: 10px;
}

.page-faq .faq-item:target > summary .faq-item__q {
  color: var(--blue-deep);
}

.page-faq .faq-item__body {
  padding: 0 0 clamp(20px, 3vw, 28px);
}

.page-faq .faq-answer {
  max-width: var(--faq-measure);
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-answer p {
  margin: 0 0 0.85em;
}

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

.page-faq .faq-answer a {
  color: var(--blue-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-field {
  font-family: var(--font-mono);
  font-size: 0.86em;
  letter-spacing: 0.02em;
  background: rgba(12, 46, 74, 0.08);
  color: var(--blue-deep);
  padding: 1px 6px;
  border-radius: 2px;
  white-space: nowrap;
}

.page-faq .faq-steps {
  display: block;
  width: 100%;
  max-width: 660px;
  height: auto;
  margin: clamp(18px, 3vw, 28px) 0 clamp(6px, 2vw, 12px);
}

.page-faq .faq-figure {
  margin: clamp(14px, 2.5vw, 24px) 0 0;
  max-width: 820px;
}

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

.page-faq .faq-figure__cap {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

/* 深色强调分组 */
.page-faq .faq-group--feature {
  margin-top: clamp(36px, 6vw, 68px);
  padding: clamp(24px, 4vw, 44px) clamp(20px, 4vw, 44px);
  border-top: 0;
  background: var(--green-deep);
  color: var(--mist);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.page-faq .faq-group--feature .faq-group__index {
  color: var(--sand);
}

.page-faq .faq-group--feature .faq-group__title {
  color: var(--mist);
}

.page-faq .faq-group--feature .faq-group__intro {
  color: var(--mist-62);
}

.page-faq .faq-group--feature .faq-item {
  border-bottom-color: var(--mist-14);
}

.page-faq .faq-group--feature .faq-item__num {
  color: var(--mist-45);
}

.page-faq .faq-group--feature .faq-item__q {
  color: var(--mist);
}

.page-faq .faq-group--feature .faq-item > summary::after {
  color: var(--sand);
}

.page-faq .faq-group--feature .faq-item > summary:hover .faq-item__q,
.page-faq .faq-group--feature .faq-item > summary:focus-visible .faq-item__q,
.page-faq .faq-group--feature .faq-item:target > summary .faq-item__q {
  color: var(--sand);
}

.page-faq .faq-group--feature .faq-answer {
  color: var(--mist-82);
}

.page-faq .faq-group--feature .faq-answer a {
  color: var(--sand);
}

.page-faq .faq-group--feature .faq-field {
  background: var(--mist-14);
  color: var(--mist);
}

/* 收尾通道 */
.page-faq .faq-handoff {
  background: var(--blue-deep);
  color: var(--mist);
  padding: clamp(34px, 5vw, 62px) 0;
}

.page-faq .faq-handoff__inner {
  display: grid;
  gap: clamp(16px, 3vw, 28px);
  align-items: center;
}

.page-faq .faq-handoff__text {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-82);
}

.page-faq .faq-handoff__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 600px) {
  .page-faq .faq-item__body {
    padding-left: var(--faq-num-col);
  }
}

@media (min-width: 760px) {
  .page-faq .faq-handoff__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(200px, 236px) minmax(0, 1fr);
    gap: clamp(40px, 6vw, 88px);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }
}

@media (max-width: 899px) {
  .page-faq .faq-toc__list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    border-left: 0;
  }

  .page-faq .faq-toc__link {
    margin-left: 0;
    padding: 8px 12px;
    border: 1px solid var(--faq-rule);
    border-left-width: 1px;
    font-size: 14px;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    border-color: var(--blue-bright);
  }
}

@media (max-width: 700px) {
  .page-faq .faq-hero__media {
    aspect-ratio: 4 / 3;
  }

  .page-faq .faq-group--feature {
    clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  }
}

@media (max-width: 520px) {
  .page-faq .faq-item > summary {
    gap: 10px;
  }

  .page-faq .faq-item__q {
    font-size: 1rem;
  }

  .page-faq .faq-steps {
    margin-top: 14px;
  }
}