/* ============================================================
   答疑中心 /answers/ —— 页面专属样式，全部限定在 .page-faq 内
   ============================================================ */

.page-faq {
  --faq-gap: clamp(42px, 6vw, 78px);
  --faq-orange-ink: #C0561A;
  --faq-cyan-soft: rgba(22, 224, 196, 0.1);

  background: var(--mist);
  color: var(--navy);
  font-family: var(--font-body);
  padding-top: clamp(18px, 3.5vw, 34px);
  padding-bottom: clamp(58px, 9vw, 112px);
}

.page-faq .faq-main,
.page-faq .faq-body > * {
  min-width: 0;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding: clamp(6px, 2vw, 18px) 0 clamp(30px, 5vw, 52px);
  border-bottom: var(--edge) solid var(--navy);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan-deep);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(44px, 9.5vw, 100px);
  line-height: 0.96;
  letter-spacing: 0.03em;
  color: var(--navy);
}

.page-faq .faq-hero__lead {
  max-width: 64ch;
  margin: 0 0 26px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-faq .faq-hero__value {
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--faq-orange-ink);
  cursor: pointer;
  border-bottom: 1px dashed rgba(192, 86, 26, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-hero__value:hover,
.page-faq .faq-hero__value:focus-visible {
  color: var(--cyan-deep);
  border-bottom-color: var(--cyan-deep);
  outline: none;
}

/* ---------- 主体栅格：正文 + 锚点目录 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 38px);
  margin-top: clamp(30px, 5vw, 54px);
}

@media (min-width: 1080px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 212px;
    gap: 58px;
    align-items: start;
  }
}

/* ---------- 右侧锚点目录 ---------- */

.page-faq .faq-toc {
  order: -1;
  padding: 12px 14px 14px;
  background: var(--white);
  border: 1px solid var(--line-steel-strong);
}

.page-faq .faq-toc__title {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 8px;
  margin: 10px 0 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-toc__list a {
  display: block;
  padding: 6px 10px;
  font-size: 12.5px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--navy);
  text-decoration: none;
  background: var(--mist);
  border: 1px solid var(--line-steel);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--cyan-deep);
  background: var(--white);
  border-color: var(--cyan-deep);
  outline: none;
}

@media (min-width: 1080px) {
  .page-faq .faq-toc {
    order: 0;
    position: sticky;
    top: 22px;
    padding: 16px 16px 18px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
  }

  .page-faq .faq-toc__list a {
    white-space: normal;
  }
}

/* ---------- 章节节奏 ---------- */

.page-faq .faq-block {
  margin-bottom: var(--faq-gap);
}

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

.page-faq .faq-block::after {
  content: "";
  display: block;
  height: 7px;
  margin-top: clamp(28px, 4.5vw, 50px);
  background-image: repeating-linear-gradient(
    90deg,
    var(--line-steel-strong) 0 1px,
    transparent 1px 14px
  );
  opacity: 0.7;
}

.page-faq .faq-block:last-child::after {
  display: none;
}

/* ---------- 章节标题（浅底） ---------- */

.page-faq .faq-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  column-gap: 16px;
  row-gap: 6px;
  padding-bottom: 15px;
  margin-bottom: 26px;
  border-bottom: var(--edge) solid var(--navy);
}

.page-faq .faq-head__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--faq-orange-ink);
}

.page-faq .faq-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.15;
  letter-spacing: 0.03em;
  color: var(--navy);
}

.page-faq .faq-head__note {
  flex: 1 0 100%;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 渠道色块压头（深底） ---------- */

.page-faq .faq-band {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  padding: 16px 20px;
  color: var(--white);
  background: var(--navy);
  border-left: 8px solid var(--cyan);
}

.page-faq .faq-band__num {
  flex: 0 0 auto;
  font-size: 18px;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-band__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.15;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-faq .faq-band__note {
  flex: 1 1 auto;
  margin: 0;
  text-align: right;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.64);
}

.page-faq .faq-band--teal {
  background: var(--teal);
  border-left-color: var(--cyan);
}

.page-faq .faq-band--teal .faq-band__num {
  color: var(--cyan);
}

.page-faq .faq-band--violet {
  background: var(--violet);
  border-left-color: var(--cyan);
}

.page-faq .faq-band--violet .faq-band__num {
  color: var(--cyan);
}

.page-faq .faq-band--wine {
  background: var(--wine);
  border-left-color: var(--orange);
}

.page-faq .faq-band--wine .faq-band__num {
  color: var(--orange);
}

.page-faq .faq-band--navy {
  background: var(--navy);
  border-left-color: var(--orange);
}

.page-faq .faq-band--navy .faq-band__num {
  color: var(--orange);
}

@media (max-width: 640px) {
  .page-faq .faq-band__note {
    flex: 1 0 100%;
    text-align: left;
  }
}

/* ---------- 配图 ---------- */

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

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

/* ---------- 三步自查 ---------- */

.page-faq .check-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--white);
  border: var(--edge) solid var(--navy);
  box-shadow: var(--shadow-hard);
}

.page-faq .check-step {
  position: relative;
  padding: 24px 20px 26px;
}

.page-faq .check-step + .check-step {
  border-top: 1px solid var(--line-steel-strong);
}

.page-faq .check-step__idx {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan-deep);
}

.page-faq .check-step__idx::before {
  content: "";
  width: 9px;
  height: 9px;
  border: 2px solid var(--cyan-deep);
  border-radius: 50%;
  background: var(--white);
}

.page-faq .check-step__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--navy);
}

.page-faq .check-step__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .check-step__rule {
  margin: 0;
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--navy);
  background: var(--faq-cyan-soft);
  border-left: 3px solid var(--cyan);
  transition: background-color var(--dur) var(--ease),
    border-left-color var(--dur) var(--ease);
}

.page-faq .check-step:hover .check-step__rule,
.page-faq .check-step:focus-within .check-step__rule {
  background: rgba(22, 224, 196, 0.18);
  border-left-color: var(--cyan-deep);
}

@media (min-width: 860px) {
  .page-faq .check-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .check-step {
    padding: 30px 24px 32px;
  }

  .page-faq .check-step + .check-step {
    border-top: 0;
    border-left: 1px solid var(--line-steel-strong);
  }
}

/* ---------- 问答列表 ---------- */

.page-faq .faq-list {
  padding: 2px 16px 6px;
  background: var(--white);
  border: 1px solid var(--line-steel-strong);
  border-top: 0;
}

@media (min-width: 760px) {
  .page-faq .faq-list {
    padding: 4px 30px 10px;
  }
}

.page-faq .qa {
  border-bottom: 1px solid var(--line-steel);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .qa:last-child {
  border-bottom: 0;
}

.page-faq .qa[open] {
  background: rgba(10, 31, 51, 0.028);
}

.page-faq .qa__q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 17px 34px 17px 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--navy);
  cursor: pointer;
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  top: 13px;
  right: 2px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan-deep);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa[open] > .qa__q::after {
  content: "\2212";
  color: var(--faq-orange-ink);
}

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--cyan-deep);
  outline: none;
}

.page-faq .qa__idx {
  flex: 0 0 auto;
  min-width: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa[open] > .qa__q .qa__idx {
  color: var(--faq-orange-ink);
}

.page-faq .qa__a {
  padding: 0 34px 20px 40px;
}

.page-faq .qa__a p {
  margin: 0 0 0.85em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

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

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

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--faq-orange-ink);
}

@media (max-width: 620px) {
  .page-faq .qa__q {
    gap: 10px;
    font-size: 15.5px;
  }

  .page-faq .qa__a {
    padding: 0 8px 18px 36px;
  }
}

/* ---------- 术语速查 ---------- */

.page-faq .glossary {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 0;
  border-top: 1px solid var(--line-steel-strong);
}

.page-faq .glossary__row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-steel);
}

.page-faq .glossary__term {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--navy);
  transition: color var(--dur) var(--ease);
}

.page-faq .glossary__row:hover .glossary__term,
.page-faq .glossary__row:focus-within .glossary__term {
  color: var(--cyan-deep);
}

.page-faq .glossary__def {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

@media (min-width: 720px) {
  .page-faq .glossary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 46px;
  }

  .page-faq .glossary__row {
    display: grid;
    grid-template-columns: 148px minmax(0, 1fr);
    align-items: baseline;
    gap: 0 18px;
  }
}

/* ---------- 联系引导 ---------- */

.page-faq .faq-help {
  padding: clamp(22px, 4vw, 40px);
  color: var(--white);
  background: var(--navy);
  border-left: 8px solid var(--cyan);
}

.page-faq .faq-help__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 15px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

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

.page-faq .faq-help__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-help__list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

.page-faq .faq-help__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 26px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.page-faq .faq-help__privacy {
  flex: 1 1 240px;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.62);
}

.page-faq .faq-help__privacy a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-help__privacy a:hover,
.page-faq .faq-help__privacy a:focus-visible {
  color: var(--white);
}

@media (min-width: 560px) {
  .page-faq .faq-help__list li {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 16px;
  }
}

@media (min-width: 780px) {
  .page-faq .faq-help__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 44px;
  }

  .page-faq .faq-help__list li:nth-child(2) {
    border-top: 0;
    padding-top: 0;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__list a,
  .page-faq .qa,
  .page-faq .qa__q,
  .page-faq .qa__q::after,
  .page-faq .qa__idx,
  .page-faq .glossary__term,
  .page-faq .check-step__rule,
  .page-faq .faq-hero__value,
  .page-faq .faq-help__privacy a,
  .page-faq .qa__a a {
    transition: none;
  }
}