.page-faq {
  --faq-line: rgba(91, 102, 112, 0.28);
  --faq-line-soft: rgba(91, 102, 112, 0.16);
  background: var(--cream);
  color: var(--deep);
  font-family: var(--font-body);
}

.page-faq .faq-wrap {
  padding: 20px 20px 56px;
}

.page-faq .breadcrumb {
  font-size: 13px;
  color: var(--slate);
  padding: 4px 0 0;
}

.page-faq .breadcrumb a {
  color: var(--deep);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  text-decoration: underline;
  text-decoration-color: var(--sun);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 18px;
  padding: 40px 20px 30px;
  background: var(--cream);
  border: 2px solid var(--ink);
  border-radius: 0 44px 0 0;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid var(--faq-line);
  border-radius: 0 38px 0 0;
  pointer-events: none;
}

.page-faq .faq-hero__stamp {
  position: absolute;
  top: -2px;
  right: -2px;
  padding: 6px 13px;
  background: var(--sun);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  border-bottom-left-radius: 14px;
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--slate);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 5.2vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 18ch;
}

.page-faq .faq-hero .lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--deep);
  max-width: 44ch;
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 22px 0 24px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 13px;
  color: var(--slate);
}

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

.page-faq .faq-hero__meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sun);
  flex: none;
}

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

/* ---------- 主题速览 ---------- */
.page-faq .faq-index {
  margin-top: var(--section-gap);
}

.page-faq .section-head h2 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.4vw, 40px);
  line-height: 1.22;
  color: var(--ink);
}

.page-faq .section-head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 52ch;
}

.page-faq .topic-grid {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-faq .topic-card {
  display: block;
  height: 100%;
  padding: 16px 16px 18px;
  background: var(--cream-2);
  border: 1px solid var(--faq-line);
  color: inherit;
  text-decoration: none;
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease),
    background var(--t) var(--ease);
}

.page-faq .topic-card:hover,
.page-faq .topic-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--ink);
  background: #fff;
}

.page-faq .topic-card__top {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-faq .topic-card__no {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.4;
  padding: 1px 7px;
  background: var(--sun);
  color: var(--ink);
}

.page-faq .topic-card__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}

.page-faq .topic-card__meta {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-faq .topic-card__desc {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--deep);
}

/* ---------- 主体：问答流 + 主题目录 ---------- */
.page-faq .faq-body {
  margin-top: var(--section-gap);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: "toc" "stream";
  gap: 26px;
}

.page-faq .faq-toc {
  grid-area: toc;
  padding: 14px 16px;
  background: var(--mist);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--slate);
}

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

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid transparent;
  color: var(--deep);
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-color: var(--ink);
  background: #fff;
}

.page-faq .faq-toc__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--slate);
  flex: none;
}

.page-faq .faq-toc__link:hover .faq-toc__dot {
  background: var(--sun);
}

.page-faq .qa-stream {
  grid-area: stream;
  min-width: 0;
}

.page-faq .qa-stream__intro {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
  border-left: 3px solid var(--faq-line-soft);
  padding-left: 12px;
}

.page-faq .topic {
  margin-top: 30px;
  padding-top: 26px;
  border-top: 2px solid var(--ink);
}

.page-faq .topic__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.page-faq .topic__no {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 2px 8px;
  background: var(--sun);
  color: var(--ink);
  flex: none;
}

.page-faq .topic h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 28px);
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-faq .topic__note {
  margin: 8px 0 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .topic__list {
  display: block;
}

.page-faq .qa {
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa:first-child {
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .qa__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--slate);
  transition: color var(--t) var(--ease);
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--sun);
  outline-offset: 3px;
}

.page-faq .qa__body {
  padding: 12px 0 4px;
}

.page-faq .qa__take {
  margin: 0 0 10px;
  padding-left: 12px;
  border-left: 3px solid var(--sun);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .qa__steps {
  margin: 0;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--deep);
}

.page-faq .qa__steps li {
  margin-bottom: 4px;
}

.page-faq .qa__more {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate);
}

.page-faq .faq-link {
  color: var(--deep);
  text-decoration: underline;
  text-decoration-color: var(--sun);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq .faq-link:hover {
  color: var(--ink);
}

.page-faq .faq-figure {
  margin: 30px 0 0;
  padding: 10px;
  background: var(--cream-2);
  border: 1px solid var(--faq-line);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 收束：人工支持 ---------- */
.page-faq .faq-help {
  margin-top: var(--section-gap);
  padding: 28px 20px 30px;
  background: var(--ink);
  color: var(--cream);
  border-radius: 0 36px 0 0;
}

.page-faq .faq-help__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--sun);
}

.page-faq .faq-help h2 {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.25;
  color: var(--cream);
}

.page-faq .faq-help__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 247, 234, 0.82);
  max-width: 56ch;
}

.page-faq .faq-help__contact {
  list-style: none;
  margin: 22px 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-help__label {
  display: inline-block;
  min-width: 44px;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sun);
}

.page-faq .faq-help .btn--sun {
  display: inline-block;
  text-decoration: none;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-wrap {
    padding: 36px 40px 96px;
  }

  .page-faq .faq-hero {
    padding: 60px 52px 52px;
    border-radius: 0 60px 0 0;
  }

  .page-faq .faq-hero::before {
    inset: 10px;
    border-radius: 0 52px 0 0;
  }

  .page-faq .faq-hero .lead {
    font-size: 18px;
  }

  .page-faq .topic-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .topic-grid > li:nth-child(1) {
    grid-column: span 3;
  }

  .page-faq .topic-grid > li:nth-child(2) {
    grid-column: span 3;
  }

  .page-faq .topic-grid > li:nth-child(3) {
    grid-column: span 2;
  }

  .page-faq .topic-grid > li:nth-child(4) {
    grid-column: span 2;
  }

  .page-faq .topic-grid > li:nth-child(5) {
    grid-column: span 2;
  }

  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 228px;
    grid-template-areas: "stream toc";
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 24px;
    padding: 18px 18px 20px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-faq .faq-toc__link {
    width: 100%;
    padding: 9px 0;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--faq-line);
    font-size: 14px;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    background: transparent;
    border-bottom-color: var(--ink);
  }

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

  .page-faq .topic__list {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 40px;
    align-items: start;
    margin-top: 6px;
  }

  .page-faq .qa:first-child {
    border-top: 1px solid var(--faq-line);
  }

  .page-faq .faq-figure {
    margin-top: 36px;
    padding: 12px;
  }

  .page-faq .faq-help {
    padding: 48px 52px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    grid-template-areas:
      "kicker cta"
      "title cta"
      "text contact";
    column-gap: 48px;
    align-items: start;
  }

  .page-faq .faq-help__kicker {
    grid-area: kicker;
  }

  .page-faq .faq-help h2 {
    grid-area: title;
    max-width: 22ch;
  }

  .page-faq .faq-help__text {
    grid-area: text;
  }

  .page-faq .faq-help__contact {
    grid-area: contact;
    margin: 20px 0 0;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 247, 234, 0.24);
  }

  .page-faq .faq-help .btn--sun {
    grid-area: cta;
    justify-self: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .topic-card,
  .page-faq .topic-card:hover,
  .page-faq .topic-card:focus-visible {
    transform: none;
  }
}