/* ===== 帮助中心 · 页面专属样式（作用域 .page-faq） ===== */

.page-faq {
  padding-bottom: clamp(36px, 6vw, 82px);
  background: var(--cream);
  color: var(--ink);
}

.page-faq .breadcrumb {
  padding-top: clamp(14px, 2.2vw, 24px);
  font-size: 13px;
  line-height: 1.6;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-head {
  display: grid;
  gap: 14px;
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(30px, 5vw, 58px);
}

.page-faq .faq-head > .page-head__title {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--ink);
}

.page-faq .faq-head__aside {
  display: grid;
  gap: 0;
}

.page-faq .faq-head .page-head__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-head__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 章节骨架 ---------- */

.page-faq .faq-section {
  padding: clamp(34px, 6vw, 72px) 0;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-section__head {
  display: grid;
  gap: 12px;
  max-width: 74ch;
  margin: 0 0 clamp(22px, 4vw, 40px);
}

.page-faq .faq-section__no {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--line-red);
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--ink);
}

.page-faq .faq-section__head p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

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

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 clamp(24px, 4vw, 40px);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--sand);
  overflow: hidden;
}

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

.page-faq .faq-figure .media__caption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--stand);
  background: var(--cream);
  border-top: 1px solid var(--grid);
}

/* ---------- 四步步骤卡 ---------- */

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-step__no {
  grid-column: 1;
  grid-row: 1;
  margin: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: start;
  min-width: 46px;
  padding: 7px 6px;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
  background: var(--sand);
  border-left: 3px solid var(--signal);
  border-radius: var(--radius);
}

.page-faq .faq-step__body {
  grid-column: 2;
  grid-row: 1;
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

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

.page-faq .faq-step__fields {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  padding: 12px 0 0;
  border-top: 2px solid var(--signal);
  font-family: var(--font-data);
  font-size: 13px;
  line-height: 1.7;
}

.page-faq .faq-step__fields dt {
  margin: 0 0 4px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--line-red);
}

.page-faq .faq-step__fields dd {
  margin: 0;
  color: var(--ink);
}

/* ---------- 材料准备区 ---------- */

.page-faq .faq-prepare {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

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

.page-faq .faq-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-checklist li {
  position: relative;
  padding: 15px 0 15px 26px;
  border-bottom: 1px solid var(--grid);
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 12px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-checklist strong {
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-line-key {
  margin: 16px 0 0;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--signal);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-figure--offset {
  margin-bottom: 0;
}

/* ---------- 问答折叠组 ---------- */

.page-faq .faq-qalist {
  border-top: 1px solid var(--grid);
}

.page-faq .faq-qa {
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-qa .fold__trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: clamp(16px, 2vw, 18px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .faq-qa .fold__trigger:hover .faq-qa__q {
  color: var(--crimson);
}

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

.page-faq .faq-qa .fold__sign {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  font-family: var(--font-data);
  font-size: 15px;
  line-height: 1;
  color: var(--ink);
  background: var(--sand);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  transition: transform 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-qa[open] .fold__sign {
  transform: rotate(45deg);
  background: var(--signal);
}

.page-faq .faq-qa .fold__panel {
  margin: 0 0 22px;
  padding: 18px 20px 20px;
  background: var(--night);
  color: var(--cream);
  border-left: 3px solid var(--signal);
  border-radius: var(--radius);
}

.page-faq .faq-qa .fold__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--cream);
}

.page-faq .faq-qa .fold__panel p + p {
  margin-top: 12px;
}

.page-faq .faq-qa .fold__panel a {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-qa .fold__panel .faq-line-key {
  margin: 12px 0 0;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--signal);
  font-weight: 700;
  color: var(--cream);
}

/* ---------- 人工通道 ---------- */

.page-faq .faq-section--night {
  background: var(--night);
  color: var(--cream);
  border-top-color: var(--night);
}

.page-faq .faq-section--night .faq-section__no {
  color: var(--signal);
}

.page-faq .faq-section--night .faq-section__head h2 {
  color: var(--cream);
}

.page-faq .faq-section--night .faq-section__head p {
  color: var(--sand);
}

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

.page-faq .faq-section--night .btn--ghost {
  color: var(--cream);
  border-color: rgba(246, 239, 228, 0.55);
}

.page-faq .faq-section--night .btn--ghost:hover {
  color: var(--ink);
}

/* ---------- 中屏 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-prepare {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-faq .faq-figure--offset {
    margin-top: clamp(0px, 3vw, 40px);
  }
}

/* ---------- 桌面端 ---------- */

@media (min-width: 900px) {
  .page-faq .faq-head {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: clamp(30px, 5vw, 72px);
    row-gap: 18px;
    align-items: end;
    padding-bottom: clamp(42px, 6.5vw, 78px);
  }

  .page-faq .faq-head > .page-head__label {
    grid-column: 1 / -1;
    grid-row: 1;
    align-self: start;
  }

  .page-faq .faq-head > .page-head__title {
    grid-column: 1;
    grid-row: 2;
    align-self: end;
  }

  .page-faq .faq-head > .faq-head__aside {
    grid-column: 2;
    grid-row: 2;
    align-self: end;
  }

  .page-faq .faq-step {
    grid-template-columns: 88px minmax(0, 1.45fr) minmax(0, 0.8fr);
    column-gap: clamp(22px, 3.5vw, 46px);
    row-gap: 0;
    padding: 32px 0;
  }

  .page-faq .faq-step__no {
    grid-column: 1;
    grid-row: 1;
    min-width: 58px;
    padding: 9px 8px;
    font-size: 26px;
  }

  .page-faq .faq-step__body {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-step__fields {
    grid-column: 3;
    grid-row: 1;
  }

  .page-faq .faq-step__title {
    font-size: 20px;
  }

  .page-faq .faq-qa .fold__trigger {
    padding: 22px 0;
  }

  .page-faq .faq-qa .fold__panel {
    padding: 22px 26px 24px;
  }
}
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