.page-faq {
  background: var(--paper);
  color: var(--graphite);
  overflow-x: hidden;
  padding-bottom: clamp(36px, 6vw, 72px);
}

.page-faq .faq-crumb {
  padding: 14px 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  border-top: 2px solid var(--ink-deep);
  border-bottom: 2px solid var(--graphite);
  padding: clamp(26px, 5vw, 56px) 0 clamp(30px, 5vw, 60px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(25, 211, 255, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 211, 255, 0.13) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  pointer-events: none;
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(28px, 5.2vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lede {
  margin: 0 0 20px;
  max-width: 48ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: rgba(247, 249, 252, 0.86);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__panel {
  background: var(--slate);
  border: 2px solid var(--hair-strong);
  box-shadow: 6px 6px 0 var(--orange);
  padding: 16px 18px 8px;
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-hero__panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.page-faq .faq-hero__panel a {
  display: block;
  padding: 11px 0;
  color: var(--paper);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.page-faq .faq-hero__panel a:hover,
.page-faq .faq-hero__panel a:focus-visible {
  color: var(--mint);
}

/* 分类索引 */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: clamp(18px, 3vw, 28px) 0;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border: 2px solid var(--graphite);
  background: var(--paper);
  color: var(--graphite);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 3px 3px 0 rgba(15, 23, 42, 0.14);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--orange);
}

.page-faq .faq-jump__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

/* 面板 */
.page-faq .faq-block {
  background: var(--paper);
  border: 2px solid var(--graphite);
  box-shadow: 5px 5px 0 rgba(15, 23, 42, 0.16);
  padding: clamp(18px, 3vw, 30px);
  margin-bottom: clamp(20px, 3vw, 32px);
  scroll-margin-top: 88px;
}

.page-faq .faq-block__head .num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
}

.page-faq .faq-block__head h2 {
  margin: 10px 0 8px;
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 900;
  line-height: 1.32;
}

.page-faq .faq-block__note {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

/* 三步卡 */
.page-faq .faq-steps {
  display: grid;
  gap: 12px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  border: 2px solid var(--graphite);
  background: var(--paper);
  box-shadow: 4px 4px 0 rgba(15, 23, 42, 0.12);
  padding: 14px 15px 16px;
}

.page-faq .faq-step__no {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-step h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 0;
  border: 2px solid var(--graphite);
  background: var(--ink);
  box-shadow: 5px 5px 0 rgba(15, 23, 42, 0.18);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 12px;
  border-top: 2px solid var(--graphite);
  background: var(--slate);
  color: var(--paper);
  font-size: 13px;
  line-height: 1.6;
}

/* 折叠问答 */
.page-faq .qa-list {
  border-bottom: 2px solid var(--hair-dark);
  margin: 0 0 16px;
}

.page-faq .qa {
  border-top: 2px solid var(--hair-dark);
}

.page-faq .qa__sum {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--graphite);
}

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

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

.page-faq .qa__mark {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  margin-top: 1px;
  display: grid;
  place-items: center;
  border: 2px solid var(--graphite);
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--graphite);
}

.page-faq .qa__mark::before {
  content: "+";
}

.page-faq .qa[open] .qa__mark {
  background: var(--orange);
  color: var(--paper);
}

.page-faq .qa[open] .qa__mark::before {
  content: "−";
}

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

.page-faq .qa__a {
  padding: 0 0 16px 36px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--slate);
}

.page-faq .qa__a p {
  margin: 0 0 8px;
}

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

.page-faq .qa__a ol,
.page-faq .qa__a ul {
  margin: 6px 0 10px;
  padding-left: 20px;
}

.page-faq .qa__a li {
  margin-bottom: 4px;
}

.page-faq .qa__a a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-decoration-thickness: 2px;
}

/* 变更查看步骤 */
.page-faq .faq-flow {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  counter-reset: flow;
  display: grid;
  gap: 8px;
}

.page-faq .faq-flow li {
  position: relative;
  padding: 10px 12px 10px 44px;
  border: 2px solid var(--hair-dark);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-flow li::before {
  counter-increment: flow;
  content: counter(flow, decimal-leading-zero);
  position: absolute;
  left: 12px;
  top: 11px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-note {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-left: 4px solid var(--amber);
  background: rgba(255, 197, 61, 0.16);
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-faq .faq-more {
  margin: 0;
  font-size: 14px;
}

.page-faq .faq-more a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
}

/* 回应时间（深色面板） */
.page-faq .faq-block--dark {
  background: var(--ink);
  border-color: var(--ink-deep);
  color: var(--paper);
  box-shadow: 6px 6px 0 rgba(255, 90, 31, 0.72);
}

.page-faq .faq-block--dark .faq-block__head h2 {
  color: var(--paper);
}

.page-faq .faq-block--dark .faq-block__note {
  color: rgba(247, 249, 252, 0.72);
}

.page-faq .faq-figure--dark {
  border-color: var(--hair-strong);
  box-shadow: none;
  margin-bottom: 18px;
}

.page-faq .faq-channels {
  display: grid;
  gap: 10px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-channel {
  border: 2px solid var(--hair-strong);
  background: rgba(247, 249, 252, 0.05);
  padding: 12px 14px;
}

.page-faq .faq-channel__k {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-channel__v {
  display: block;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .faq-dark-text {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(247, 249, 252, 0.82);
}

/* 联系准备 */
.page-faq .faq-checklist {
  display: grid;
  gap: 2px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-checklist li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  padding: 11px 0;
  border-top: 2px solid var(--hair-dark);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .faq-checklist strong {
  color: var(--graphite);
}

.page-faq .faq-check {
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 2px solid var(--mint);
  background: rgba(46, 230, 168, 0.18);
}

/* 联系条 */
.page-faq .faq-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  border-top: 2px solid var(--graphite);
  padding-top: 16px;
}

.page-faq .faq-contact--dark {
  border-top-color: var(--hair-strong);
}

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

.page-faq .faq-contact--dark .faq-contact__lines {
  color: rgba(247, 249, 252, 0.82);
}

.page-faq .faq-contact__lines strong {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-contact--dark .faq-contact__lines strong {
  color: var(--paper);
}

/* 回到顶部 */
.page-faq .faq-top-wrap {
  padding: 6px 0 4px;
  text-align: center;
}

.page-faq .faq-top {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  color: var(--ink);
}

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

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

  .page-faq .faq-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .qa__a {
    padding-left: 36px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-block {
    display: grid;
    grid-template-columns: minmax(180px, 3fr) minmax(0, 7fr);
    gap: clamp(20px, 3vw, 40px);
    align-items: start;
  }

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

@media (max-width: 420px) {
  .page-faq .qa__a {
    padding-left: 0;
  }

  .page-faq .qa__sum {
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .qa__mark {
    transition: none;
  }
}