.page-faq {
  --faq-gap: clamp(18px, 3vw, 32px);
  --faq-pad: clamp(36px, 5vw, 68px);
}

/* ---------- 面包屑区 ---------- */
.page-faq .crumbs {
  padding-top: clamp(16px, 2.4vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.6vw, 56px) 0 clamp(32px, 5vw, 72px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -14%;
  width: 58%;
  height: 170%;
  background: linear-gradient(155deg, rgba(0, 229, 255, 0.13), rgba(0, 229, 255, 0) 68%);
  transform: rotate(12deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 34%;
  height: 3px;
  background: linear-gradient(90deg, var(--coral), rgba(255, 107, 53, 0));
  transform: skewX(-12deg);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-size: clamp(28px, 5vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 34em;
  color: var(--mist);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  border-top: 2px solid var(--cyan);
  padding-top: 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 3px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 9px 10px;
  border: 1px solid var(--line-600);
  border-left: 2px solid transparent;
  color: var(--fog);
  font-size: 14px;
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-index__link:hover {
  background: var(--ink-800);
  border-left-color: var(--coral);
  color: var(--cyan);
  transform: translateX(3px);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  color: var(--cyan);
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--coral);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-sec {
  padding: var(--faq-pad) 0;
}

.page-faq .faq-sec--tint {
  background: linear-gradient(180deg, rgba(18, 38, 63, 0.92), rgba(11, 26, 47, 0.35));
  border-top: 1px solid var(--line-600);
  border-bottom: 1px solid var(--line-600);
}

/* ---------- 订阅步骤条 ---------- */
.page-faq .faq-rule__figure {
  margin: 0 0 var(--faq-gap);
}

.page-faq .faq-rule__intro {
  margin: 0 0 8px;
  color: var(--mist);
}

.page-faq .faq-steps {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-step {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--line-600);
  border-left: 2px solid var(--line-600);
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-step[open] {
  border-left-color: var(--coral);
}

.page-faq .faq-step__sum {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 44px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

.page-faq .faq-step__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 16px;
  color: var(--coral);
}

.page-faq .faq-step[open] .faq-step__sum::after {
  content: "–";
}

.page-faq .faq-step__num {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-faq .faq-step__name {
  font-size: 15px;
  color: var(--fog);
}

.page-faq .faq-step__body {
  padding: 0 16px 16px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.85;
}

.page-faq .faq-step__body p {
  margin: 0;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-qa {
  display: grid;
}

.page-faq .faq-item {
  border-top: 1px solid var(--line-600);
  transition: box-shadow 0.2s var(--ease);
}

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--line-600);
}

.page-faq .faq-item[open] {
  box-shadow: inset 2px 0 0 var(--coral);
}

.page-faq .faq-item__sum {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 20px;
  align-items: start;
  gap: 10px;
  min-height: 44px;
  padding: 16px 10px;
  cursor: pointer;
  list-style: none;
}

.page-faq .faq-item__sum::after {
  content: "+";
  grid-column: 3;
  font-family: var(--mono);
  font-size: 17px;
  line-height: 1.2;
  color: var(--coral);
  text-align: right;
}

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

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

.page-faq .faq-item__sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  font-size: 12px;
  line-height: 1.9;
  color: var(--cyan);
}

.page-faq .faq-item__q {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--fog);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-item__body {
  padding: 0 10px 20px;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.45);
}

.page-faq .faq-item__body a:hover {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

.page-faq summary {
  list-style: none;
}

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

/* ---------- 通知区 ---------- */
.page-faq .faq-alert__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-alert__figure {
  margin: 0;
}

.page-faq .faq-merge {
  margin-top: clamp(22px, 3vw, 34px);
  padding: clamp(18px, 3vw, 28px);
  background: var(--ink-800);
  border: 1px solid var(--line-600);
  border-left: 3px solid var(--cyan);
}

.page-faq .faq-merge__title {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.4;
  color: var(--fog);
}

.page-faq .faq-merge p {
  margin: 0 0 18px;
  max-width: 34em;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-faq .faq-timeline {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 联系引导 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: var(--faq-gap);
  border-top: 2px solid var(--coral);
  padding-top: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-faq .faq-contact .section-head {
  margin-bottom: 14px;
}

.page-faq .faq-contact__desc {
  margin: 0 0 14px;
  max-width: 34em;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-faq .faq-contact__mail {
  color: var(--cyan);
  word-break: break-all;
}

.page-faq .faq-contact__btn {
  margin-top: 6px;
}

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

.page-faq .faq-contact__list li {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 4px;
  border-bottom: 1px dashed var(--line-600);
  color: var(--mist);
  font-size: 13.5px;
  line-height: 1.8;
}

.page-faq .faq-contact__key {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  padding-top: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-item__sum {
    grid-template-columns: 76px minmax(0, 1fr) 24px;
    gap: 14px;
    align-items: center;
    padding: 20px 14px;
  }

  .page-faq .faq-item__num {
    line-height: 1.6;
    font-size: 13px;
  }

  .page-faq .faq-item__q {
    font-size: 17px;
  }

  .page-faq .faq-item__body {
    padding: 0 14px 22px 104px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-top: 26px;
  }

  .page-faq .faq-step__sum {
    flex-wrap: wrap;
    gap: 6px;
  }

  .page-faq .faq-step__sum::after {
    margin-left: auto;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.8fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: end;
  }

  .page-faq .faq-alert__grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
    gap: clamp(24px, 3.5vw, 44px);
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
    gap: clamp(24px, 3.5vw, 48px);
  }
}
<<<END>>>