.page-faq {
  --faq-cut: 18px;
  --faq-num-col: clamp(56px, 9vw, 108px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(28px, 4vw, 56px));
  padding-bottom: clamp(52px, 7vw, 96px);
  overflow: hidden;
  background:
    radial-gradient(120% 70% at 8% 0%, rgba(212, 160, 23, .14), transparent 58%),
    radial-gradient(90% 80% at 100% 110%, rgba(232, 106, 51, .12), transparent 62%);
}

.page-faq .faq-hero__frame {
  position: absolute;
  inset: clamp(14px, 1.8vw, 26px);
  border: 1px solid var(--line);
  pointer-events: none;
}

.page-faq .faq-hero__frame::before {
  content: "GUIDE / 01";
  position: absolute;
  top: -8px;
  left: clamp(18px, 3vw, 40px);
  padding: 0 10px;
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: 0;
  width: clamp(48px, 8vw, 96px);
  height: 4px;
  background: linear-gradient(90deg, var(--amber), var(--coral));
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  max-width: calc(var(--maxw) - 2 * clamp(14px, 1.8vw, 26px));
  margin: 0 auto;
  padding: 0 calc(var(--gutter) + clamp(10px, 1.5vw, 24px));
  display: grid;
  gap: clamp(18px, 2.4vw, 30px);
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray-green);
}

.page-faq .breadcrumbs a {
  color: var(--gray-green);
  text-decoration: none;
  transition: color .22s var(--ease);
}

.page-faq .breadcrumbs a:hover {
  color: var(--amber-soft);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--line);
}

.page-faq .breadcrumbs [aria-current="page"] {
  color: var(--amber);
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber-soft);
}

.page-faq h1 {
  margin: 0;
  max-width: 13em;
  font-size: clamp(36px, 6.6vw, 84px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 36em;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.75;
  color: var(--on-dark);
}

.page-faq .faq-hero__quick {
  list-style: none;
  margin: 0;
  padding: clamp(16px, 2vw, 22px) 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
  max-width: 660px;
}

.page-faq .faq-hero__quick li {
  display: flex;
  gap: 16px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.6;
  color: var(--on-dark);
}

.page-faq .faq-hero__quick .mono {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber);
}

/* ---------- 通用区块头 ---------- */
.page-faq .section-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-faq h2 {
  margin: 0;
  max-width: 20em;
  font-size: clamp(24px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .lede {
  margin: 0;
  max-width: 42em;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.78;
  color: var(--on-dark);
}

.page-faq .index-label {
  color: var(--amber);
}

/* ---------- 首次访问四步 ---------- */
.page-faq .faq-steps {
  border-top: 1px solid var(--line-soft);
}

.page-faq .media--wide {
  margin: 0 0 clamp(34px, 4.5vw, 60px);
  border: 1px solid var(--line);
}

.page-faq .step-rail {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .step-item {
  position: relative;
  display: grid;
  grid-template-columns: var(--faq-num-col) 1fr;
  gap: clamp(16px, 2.6vw, 40px);
  padding: clamp(24px, 3.4vw, 40px) 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .step-item__num {
  font-size: clamp(26px, 4.2vw, 52px);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--amber);
}

.page-faq .step-item__num::after {
  content: "";
  display: block;
  width: 34px;
  height: 2px;
  margin-top: 14px;
  background: linear-gradient(90deg, var(--amber), transparent);
}

.page-faq .step-item__body h3 {
  margin: 0 0 10px;
  font-size: clamp(17px, 1.9vw, 23px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .step-item__body p {
  margin: 0 0 10px;
  max-width: 36em;
  font-size: clamp(14px, 1.35vw, 16px);
  line-height: 1.78;
  color: var(--on-dark);
}

.page-faq .step-item__time {
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-green);
  letter-spacing: .02em;
}

.page-faq .step-item__time .mono {
  color: var(--amber-soft);
}

/* ---------- 账户中心 ---------- */
.page-faq .faq-acct {
  border-top: 1px solid var(--line-soft);
  background:
    linear-gradient(180deg, rgba(18, 76, 60, .55), rgba(11, 59, 46, 0) 62%);
}

.page-faq .acct-split {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
  grid-template-columns: 1fr;
}

.page-faq .acct-tile {
  position: relative;
  display: grid;
  gap: 10px;
  padding: clamp(22px, 2.6vw, 34px);
  background: var(--ink-lift);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  transition: transform .3s var(--ease);
}

.page-faq .acct-tile--alt {
  background: linear-gradient(150deg, var(--ink-lift), rgba(212, 160, 23, .14));
}

.page-faq .acct-tile__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--amber);
  color: var(--amber);
  font-size: 13px;
  letter-spacing: .06em;
}

.page-faq .acct-tile h3 {
  margin: 0;
  font-size: clamp(17px, 1.9vw, 22px);
  font-weight: 700;
  color: var(--paper);
}

.page-faq .acct-tile p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--on-dark);
}

/* ---------- 检索技巧 ---------- */
.page-faq .faq-search {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-search__intro {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-search__intro .media {
  margin: clamp(18px, 2.5vw, 30px) 0 0;
  border: 1px solid var(--line-soft);
}

.page-faq .search-tips {
  display: grid;
  gap: clamp(12px, 1.6vw, 18px);
  align-content: start;
}

.page-faq .tip-card {
  position: relative;
  padding: clamp(18px, 2.2vw, 26px);
  padding-left: clamp(20px, 2.4vw, 30px);
  background: rgba(18, 76, 60, .52);
  border-left: 3px solid var(--amber);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: background .28s var(--ease), border-color .28s var(--ease);
}

.page-faq .tip-card:hover {
  background: rgba(18, 76, 60, .82);
  border-left-color: var(--coral);
}

.page-faq .tip-card__key {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--amber-soft);
}

.page-faq .tip-card h3 {
  margin: 0 0 8px;
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .tip-card p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.74;
  color: var(--on-dark);
}

.page-faq .tip-card__sample {
  display: inline-block;
  padding: 7px 14px;
  background: var(--ink-deep);
  border: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan);
}

/* ---------- 版本对照（浅色区） ---------- */
.page-faq .section--paper {
  background: var(--paper);
}

.page-faq .section--paper h2 {
  color: var(--char);
}

.page-faq .section--paper .lede {
  color: rgba(26, 26, 26, .74);
}

.page-faq .section--paper .index-label {
  color: #8a6a12;
}

.page-faq .version-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(26, 26, 26, .14);
  border: 1px solid rgba(26, 26, 26, .14);
}

.page-faq .version-panel {
  background: var(--paper);
  padding: clamp(22px, 2.8vw, 36px);
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .version-panel--alt {
  background: #e6ebec;
}

.page-faq .version-panel h3 {
  margin: 0;
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--char);
}

.page-faq .version-panel p {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(26, 26, 26, .78);
}

.page-faq .version-list {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .version-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(26, 26, 26, .8);
}

.page-faq .version-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 10px;
  height: 2px;
  background: var(--coral);
}

.page-faq .faq-version__link {
  margin: clamp(24px, 3vw, 36px) 0 0;
  max-width: 48em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(26, 26, 26, .78);
}

.page-faq .faq-version__link a {
  color: #8a6a12;
  text-decoration: none;
  border-bottom: 1px solid rgba(138, 106, 18, .5);
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

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

/* ---------- 分类导航 ---------- */
.page-faq .faq-cats {
  border-top: 1px solid var(--line-soft);
}

.page-faq .cat-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  background: rgba(18, 76, 60, .28);
  color: var(--on-dark);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color .24s var(--ease), color .24s var(--ease), background .24s var(--ease);
}

.page-faq .cat-chip .mono {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-faq .cat-chip:hover {
  border-color: var(--amber);
  background: rgba(212, 160, 23, .12);
  color: var(--amber-soft);
}

/* ---------- 两步联系客服 ---------- */
.page-faq .faq-contact {
  border-top: 1px solid var(--line-soft);
}

.page-faq .contact-line {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  grid-template-columns: 1fr;
}

.page-faq .contact-step {
  position: relative;
  padding: clamp(22px, 2.6vw, 34px);
  background: var(--ink-deep);
  border-top: 3px solid var(--coral);
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .contact-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 2px solid var(--coral);
  border-radius: 50%;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--coral);
  background: rgba(232, 106, 51, .08);
}

.page-faq .contact-step h3 {
  margin: 0;
  font-size: clamp(17px, 1.9vw, 22px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .contact-step p {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--on-dark);
}

.page-faq .contact-step a {
  color: var(--amber-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .contact-step a:hover {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

/* ---------- 常见问题 ---------- */
.page-faq .faq-q {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-list {
  display: grid;
  gap: clamp(30px, 4vw, 48px);
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group__title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-details {
  background: rgba(18, 76, 60, .42);
  border-left: 2px solid transparent;
  transition: border-color .26s var(--ease), background .26s var(--ease);
}

.page-faq .faq-details + .faq-details {
  margin-top: 2px;
}

.page-faq .faq-details[open] {
  border-left-color: var(--amber);
  background: rgba(18, 76, 60, .74);
}

.page-faq .faq-details__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: clamp(15px, 1.9vw, 22px) clamp(18px, 2.2vw, 28px);
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 500;
  line-height: 1.55;
  color: var(--paper);
  transition: color .22s var(--ease);
}

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

.page-faq .faq-details__summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--amber);
  transition: color .22s var(--ease);
}

.page-faq .faq-details[open] .faq-details__summary::after {
  content: "−";
  color: var(--coral);
}

.page-faq .faq-details__summary:hover {
  color: var(--amber-soft);
}

.page-faq .faq-details__body {
  padding: 0 clamp(18px, 2.2vw, 28px) clamp(18px, 2.2vw, 26px);
}

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

.page-faq .faq-details__body a {
  color: var(--amber-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

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

/* ---------- 收束 ---------- */
.page-faq .faq-cta-band {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-cta {
  display: grid;
  gap: 16px;
  padding: clamp(26px, 3.4vw, 48px);
  background: linear-gradient(118deg, var(--ink-lift), var(--ink-deep) 70%);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-faq .faq-cta h2 {
  font-size: clamp(22px, 2.8vw, 34px);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--on-dark);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .contact-line {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .version-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 880px) {
  .page-faq .acct-split {
    grid-template-columns: repeat(6, 1fr);
  }

  .page-faq .acct-tile {
    grid-column: span 3;
  }

  .page-faq .acct-tile--wide {
    grid-column: span 6;
  }

  .page-faq .acct-tile:hover {
    transform: translateY(-3px);
  }
}

@media (max-width: 719px) {
  .page-faq .faq-hero__frame::before {
    font-size: 10px;
    left: 14px;
  }

  .page-faq .step-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .page-faq .step-item__num {
    font-size: 26px;
  }

  .page-faq .step-item__num::after {
    width: 22px;
    margin-top: 10px;
  }

  .page-faq .faq-hero__inner {
    padding: 0 calc(var(--gutter) + 6px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .acct-tile,
  .page-faq .tip-card,
  .page-faq .cat-chip,
  .page-faq .faq-details,
  .page-faq .breadcrumbs a {
    transition: none;
  }

  .page-faq .acct-tile:hover {
    transform: none;
  }
}
</main>