/* ============================================================
   问答中心 · 页面专属样式
   作用域：.page-faq
   ============================================================ */

.page-faq {
  padding-bottom: 72px;
}

.page-faq .crumbs {
  margin: 26px 0 0;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding: 24px 0 34px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--brick);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  max-width: 20ch;
  font-family: var(--serif);
  font-size: clamp(27px, 7.2vw, 46px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.95;
  color: var(--graphite);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--note);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__meta .mono {
  font-size: 14px;
  color: var(--ink-2);
}

/* ---------- 先看这三条 ---------- */

.page-faq .faq-quick {
  padding: 42px 0 6px;
}

.page-faq .faq-quick__title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-faq .faq-quick__lede {
  margin: 0 0 24px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--note);
}

.page-faq .faq-quick__grid {
  display: grid;
  gap: 14px;
}

.page-faq .quick-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brick);
  border-radius: 2px;
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .quick-card:hover,
.page-faq .quick-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 1px 0 rgba(18, 60, 51, 0.05), 0 22px 38px -26px rgba(18, 60, 51, 0.7);
}

.page-faq .quick-card__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--brick);
}

.page-faq .quick-card__title {
  margin: 0;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .quick-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .quick-card__go {
  margin-top: auto;
  padding-top: 12px;
  font-size: 13px;
  color: var(--ink-2);
}

/* ---------- 两栏布局 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: 32px;
  margin-top: 46px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* ---------- 左栏问题索引 ---------- */

.page-faq .faq-index {
  border-top: 2px solid var(--ink);
  padding-top: 14px;
}

.page-faq .faq-index__head {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--brick);
}

.page-faq .faq-index__group + .faq-index__group {
  margin-top: 18px;
}

.page-faq .faq-index__label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--note);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--line);
}

.page-faq .faq-index__list a {
  display: block;
  margin-left: -1px;
  padding: 7px 8px 7px 13px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-2);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-left-color: var(--brick);
  background: rgba(214, 160, 62, 0.12);
  color: var(--brick);
}

/* ---------- 答案区块 ---------- */

.page-faq .faq-answer {
  padding-bottom: 44px;
  margin-bottom: 44px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--topbar) + 28px);
}

.page-faq .faq-answer__code {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--brick);
}

.page-faq .faq-answer__title {
  margin: 0 0 12px;
  max-width: 26ch;
  font-family: var(--serif);
  font-size: clamp(21px, 4.6vw, 28px);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-faq .faq-answer__lede {
  margin: 0 0 24px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.95;
  color: var(--graphite);
}

.page-faq .faq-answer .figure {
  margin: 0 0 26px;
}

/* ---------- 步骤 ---------- */

.page-faq .steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .steps__item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brick);
  color: #FDFAF2;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1;
  box-shadow: 0 8px 16px -10px rgba(192, 68, 43, 0.95);
}

.page-faq .steps__title {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--ink);
}

.page-faq .steps__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--graphite);
}

.page-faq .steps__text code {
  padding: 1px 5px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(18, 60, 51, 0.05);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-2);
}

.page-faq .steps__text a {
  color: var(--brick);
}

/* ---------- 复制工具条 ---------- */

.page-faq .answer-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 20px;
}

/* ---------- 折叠面板 ---------- */

.page-faq .fold {
  margin: 0 0 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

.page-faq .fold[open] {
  border-color: var(--line-strong);
}

.page-faq .fold__summary {
  position: relative;
  display: block;
  padding: 16px 46px 16px 18px;
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  list-style: none;
}

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

.page-faq .fold__summary::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 20px;
  width: 8px;
  height: 8px;
  margin-top: -6px;
  border-right: 1.5px solid var(--brick);
  border-bottom: 1.5px solid var(--brick);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease), margin-top var(--dur) var(--ease);
}

.page-faq .fold[open] .fold__summary::after {
  margin-top: -2px;
  transform: rotate(-135deg);
}

.page-faq .fold__body {
  padding: 0 18px 18px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--graphite);
}

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

.page-faq .fold__body p + p {
  margin-top: 10px;
}

.page-faq .fold__body a {
  color: var(--brick);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 旁注 ---------- */

.page-faq .answer-note {
  margin: 0;
  padding: 15px 17px;
  border-left: 2px solid var(--gold);
  background: rgba(240, 223, 184, 0.34);
  border-radius: 0 2px 2px 0;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

.page-faq .answer-note a {
  color: var(--brick);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 预约规则栅格 ---------- */

.page-faq .rule-grid {
  display: grid;
  gap: 1px;
  margin: 0 0 24px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

.page-faq .rule {
  padding: 18px;
  background: var(--card);
}

.page-faq .rule__k {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--note);
}

.page-faq .rule__v {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}

.page-faq .rule__d {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .rule__d a {
  color: var(--brick);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 资质档位 ---------- */

.page-faq .tier-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-faq .tier {
  padding: 18px 18px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ink-2);
  border-radius: 2px;
}

.page-faq .tier--pro {
  border-left-color: var(--ok);
}

.page-faq .tier--gold {
  border-left-color: var(--gold);
}

.page-faq .tier__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-faq .tier__name {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .tier__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

/* ---------- 费用明细 ---------- */

.page-faq .price-rows {
  margin: 0 0 24px;
  border-top: 1px solid var(--line);
}

.page-faq .price-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .price-row__k {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink);
}

.page-faq .price-row__v {
  font-size: 14px;
  color: var(--brick);
}

.page-faq .price-row__d {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--note);
}

/* ---------- 人工咨询区 ---------- */

.page-faq .faq-answer--help {
  padding: 28px 22px 30px;
  margin-bottom: 0;
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--ink);
  background: var(--card);
  border-radius: 2px;
}

.page-faq .help-grid {
  display: grid;
  gap: 12px;
  margin: 0 0 26px;
}

.page-faq .help-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.page-faq .help-card__k {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--note);
}

.page-faq .help-card__v {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .help-card__d {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--note);
}

.page-faq .help-card .copy {
  align-self: flex-start;
  margin-top: auto;
}

.page-faq .help-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .rule-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .price-row {
    grid-template-columns: 132px minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-faq .price-row__d {
    grid-column: 3;
  }
}

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

  .page-faq .help-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--topbar) + 28px);
  }

  .page-faq .faq-hero {
    padding-top: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-card,
  .page-faq .faq-index__list a,
  .page-faq .fold__summary::after {
    transition: none;
  }

  .page-faq .quick-card:hover,
  .page-faq .quick-card:focus-visible {
    transform: none;
  }
}