.page-faq {
  position: relative;
  padding: clamp(22px, 3.6vw, 52px) 0 clamp(64px, 9vw, 118px);
}

.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 208, .45);
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-link:hover {
  color: var(--gold);
  border-bottom-color: rgba(255, 196, 107, .7);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 3.2vw, 34px) 0 clamp(28px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: clamp(70px, 16vw, 190px);
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  box-shadow: 0 0 18px rgba(53, 230, 208, .55);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 18px;
  font-size: 11px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 20px;
  max-width: 22em;
  font-size: clamp(27px, 4.6vw, 50px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--paper);
  text-shadow: 0 0 30px rgba(123, 77, 255, .38);
}

.page-faq .faq-hero__lede {
  margin: 0 0 clamp(24px, 3.4vw, 36px);
  max-width: 64ch;
  color: var(--muted);
  font-size: clamp(14.5px, 1.5vw, 16.5px);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 15px 16px;
  background: linear-gradient(158deg, rgba(20, 26, 69, .92), rgba(11, 16, 48, .92));
}

.page-faq .faq-stat__num {
  display: flex;
  align-items: baseline;
  gap: 3px;
  font-size: clamp(23px, 2.9vw, 33px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  letter-spacing: .02em;
}

.page-faq .faq-stat__unit {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0;
}

.page-faq .faq-stat__label {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .02em;
}

/* ---------- 主体栅格 ---------- */

.page-faq .page-faq__layout {
  display: grid;
  gap: 26px;
  padding-top: clamp(30px, 4.6vw, 58px);
}

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

/* ---------- 分类目录 ---------- */

.page-faq .faq-axis {
  padding: 16px 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(20, 26, 69, .88), rgba(6, 10, 30, .9));
}

.page-faq .faq-axis__title {
  margin: 0 0 13px;
  font-size: 10.5px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--violet-soft);
}

.page-faq .faq-axis__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-axis__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-axis__link .mono {
  font-size: 11px;
  color: var(--violet-soft);
  letter-spacing: .08em;
}

.page-faq .faq-axis__link:hover {
  color: var(--paper);
  background: rgba(123, 77, 255, .13);
  border-left-color: var(--violet);
}

.page-faq .faq-axis__link.is-active {
  color: var(--cyan);
  background: rgba(53, 230, 208, .1);
  border-left-color: var(--cyan);
  box-shadow: inset 0 0 18px -8px rgba(53, 230, 208, .8);
}

.page-faq .faq-axis__note {
  margin: 0;
  padding-top: 13px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 章节 ---------- */

.page-faq .faq-section {
  padding: clamp(26px, 3.6vw, 42px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--head-h) + 22px);
}

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

.page-faq .faq-section__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .faq-section__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 29px);
  line-height: 1.32;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-section__lede {
  margin: 0 0 24px;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 步骤条 ---------- */

.page-faq .step-list {
  position: relative;
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-faq .step-list::before {
  content: "";
  position: absolute;
  left: 34px;
  top: 34px;
  bottom: 34px;
  width: 1px;
  background: linear-gradient(180deg, var(--violet), rgba(123, 77, 255, .06));
  pointer-events: none;
}

.page-faq .step-list__item {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(152deg, rgba(20, 26, 69, .9), rgba(11, 16, 48, .88));
  transition: border-color .26s var(--ease), box-shadow .26s var(--ease), transform .26s var(--ease);
}

.page-faq .step-list__item:hover {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 1px rgba(53, 230, 208, .22), 0 14px 34px -22px rgba(123, 77, 255, .9);
  transform: translateY(-2px);
}

.page-faq .step-list__num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-0);
  background: var(--cyan);
  box-shadow: 0 0 16px rgba(53, 230, 208, .42);
  transition: background .26s var(--ease), box-shadow .26s var(--ease);
}

.page-faq .step-list__item:hover .step-list__num {
  background: var(--gold);
  box-shadow: 0 0 22px rgba(255, 196, 107, .7);
}

.page-faq .step-list__body {
  min-width: 0;
}

.page-faq .step-list__title {
  margin: 0 0 7px;
  font-size: 15.5px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--paper);
}

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

/* ---------- 问答条目 ---------- */

.page-faq .faq-item {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(152deg, rgba(20, 26, 69, .74), rgba(11, 16, 48, .74));
  transition: border-color .26s var(--ease), box-shadow .26s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-item[open] {
  border-color: var(--line-strong);
  box-shadow: inset 2px 0 0 var(--cyan), 0 12px 30px -24px rgba(53, 230, 208, .9);
}

.page-faq .faq-item__q {
  position: relative;
  padding: 15px 42px 15px 46px;
  font-size: 15px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::before {
  content: "Q";
  position: absolute;
  left: 16px;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--violet-soft);
}

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 14px;
  width: 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.4;
  color: var(--cyan);
  transition: color .22s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--gold);
}

.page-faq .faq-item__q:hover {
  color: var(--cyan);
}

.page-faq .faq-item__a {
  padding: 0 18px 18px 46px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

/* ---------- 联系与复制 ---------- */

.page-faq .faq-contact {
  display: grid;
  gap: 12px;
  margin-bottom: 8px;
}

.page-faq .faq-contact__card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(152deg, rgba(20, 26, 69, .9), rgba(6, 10, 30, .9));
}

.page-faq .faq-contact__label {
  margin: 0 0 8px;
  font-size: 10.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--violet-soft);
}

.page-faq .faq-contact__value {
  margin: 0;
  font-size: clamp(15px, 1.7vw, 18px);
  font-weight: 600;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .copy-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0 0;
  padding: 13px 15px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  background: rgba(53, 230, 208, .06);
}

.page-faq .copy-row__label {
  font-size: 10.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--violet-soft);
}

.page-faq .copy-row__val {
  flex: 1 1 200px;
  min-width: 0;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: .02em;
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */

@media (max-width: 1023px) {
  .page-faq .faq-axis__list {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  .page-faq .faq-axis__note {
    border-top-style: solid;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 1024px) {
  .page-faq .page-faq__layout {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: clamp(30px, 3.6vw, 58px);
    align-items: start;
  }

  .page-faq .faq-axis {
    position: sticky;
    top: calc(var(--head-h) + 26px);
    max-height: calc(100vh - var(--head-h) - 52px);
    overflow-y: auto;
  }

  .page-faq .step-list__item {
    padding: 18px 22px;
  }
}

@media (min-width: 1280px) {
  .page-faq .page-faq__layout {
    grid-template-columns: 252px minmax(0, 1fr);
  }

  .page-faq .faq-axis__link {
    font-size: 14.5px;
  }
}