.page-faq {
  --faq-rail: 248px;
  --faq-gap: clamp(32px, 5vw, 56px);
  --faq-soft: #3D4F5C;
  display: block;
  padding-block: clamp(20px, 3.5vw, 44px) clamp(48px, 7vw, 96px);
}

.page-faq .stack {
  display: grid;
  gap: var(--faq-gap);
}

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

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

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.6vw, 3.5rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--deep);
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 88px;
  height: 6px;
  margin-top: 18px;
  background: var(--flame);
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 38em;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__jump a {
  display: inline-block;
  padding: 8px 15px;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--deep);
  text-decoration: none;
  background: var(--cloud);
  border: 1px solid var(--line);
  clip-path: polygon(7px 0, 100% 0, calc(100% - 7px) 100%, 0 100%);
  transition: background 0.16s ease, color 0.16s ease;
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  background: var(--deep);
  color: var(--snow);
}

.page-faq .faq-hero__media {
  margin: 0;
  background: var(--cloud);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-panel);
  transform: rotate(-1.2deg);
  overflow: hidden;
}

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

/* ---------- 高频五问 ---------- */

.page-faq .faq-quick__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-quick__item {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num q"
    "num a";
  column-gap: 14px;
  align-items: start;
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--snow);
}

.page-faq .faq-quick__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--sky);
}

.page-faq .faq-quick__q {
  grid-area: q;
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--deep);
}

.page-faq .faq-quick__a {
  grid-area: a;
  margin: 8px 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .faq-quick__item:first-child {
  background: var(--deep);
}

.page-faq .faq-quick__item:first-child .faq-quick__num {
  font-size: 2.25rem;
  color: var(--gold);
}

.page-faq .faq-quick__item:first-child .faq-quick__q {
  font-size: clamp(1.25rem, 2.6vw, 1.6rem);
  color: var(--snow);
}

.page-faq .faq-quick__item:first-child .faq-quick__a {
  color: rgba(248, 250, 251, 0.78);
}

.page-faq .faq-quick__item:first-child a {
  color: var(--sky-light);
}

.page-faq .faq-quick__item:first-child a:hover,
.page-faq .faq-quick__item:first-child a:focus-visible {
  color: var(--gold);
}

/* ---------- 分类轨道 + 问答 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-rail__label {
  margin: 0 0 10px;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 15px;
  font-size: 0.9375rem;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
  color: var(--deep);
  background: var(--snow);
  border: 1px solid var(--line);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--sky);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--flame);
  border-color: var(--flame);
}

.page-faq .faq-rail__link:hover .faq-rail__num,
.page-faq .faq-rail__link:focus-visible .faq-rail__num {
  color: var(--flame);
}

.page-faq .faq-groups {
  display: grid;
  gap: clamp(30px, 4.5vw, 48px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num title"
    "num lead";
  column-gap: 14px;
  align-items: baseline;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--cloud);
}

.page-faq .faq-group__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--sky-light);
}

.page-faq .faq-group__title {
  grid-area: title;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.8vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--deep);
}

.page-faq .faq-group__lead {
  grid-area: lead;
  margin: 6px 0 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .qa {
  position: relative;
  margin-bottom: 10px;
  background: var(--snow);
  border: 1px solid var(--line);
  transition: box-shadow 0.18s ease;
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: var(--flame);
  opacity: 0;
  transition: opacity 0.18s ease;
}

.page-faq .qa[open] {
  box-shadow: 10px 10px 0 rgba(12, 34, 51, 0.06);
}

.page-faq .qa[open]::before {
  opacity: 1;
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--deep);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--sky);
  transition: color 0.18s ease;
}

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

.page-faq .qa__q:hover {
  color: var(--flame);
}

.page-faq .qa__a {
  padding: 0 18px 18px;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-group__media {
  margin: 20px 0 0;
  background: var(--cloud);
  border: 1px solid var(--line);
  overflow: hidden;
}

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

.page-faq .faq-group__caption {
  padding: 10px 14px;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--slate);
  background: var(--snow);
  border-top: 1px solid var(--line);
}

/* ---------- 反馈提交 ---------- */

.page-faq .flow {
  margin-top: 20px;
}

.page-faq .flow__svg {
  display: none;
  width: 100%;
  height: auto;
}

.page-faq .flow__link {
  stroke: var(--sky-light);
  stroke-width: 2;
  stroke-dasharray: 6 8;
}

.page-faq .flow__node {
  fill: var(--snow);
  stroke: var(--sky);
  stroke-width: 3;
}

.page-faq .flow__node--end {
  fill: var(--flame);
  stroke: var(--flame-dark);
}

.page-faq .flow__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .flow__step {
  position: relative;
  padding: 18px 18px 18px 22px;
  background: var(--snow);
  border: 1px solid var(--line);
  border-left: 4px solid var(--sky);
}

.page-faq .flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--sky);
}

.page-faq .flow__title {
  margin: 10px 0 6px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--deep);
}

.page-faq .flow__step p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .faq-feedback__hint {
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--cloud);
  border: 1px dashed var(--line);
}

.page-faq .faq-feedback__hint-title {
  margin: 0 0 12px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--deep);
}

.page-faq .faq-feedback__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ---------- 工单后续 ---------- */

.page-faq .faq-progress__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-progress__item {
  padding: 20px;
  background: var(--snow);
}

.page-faq .faq-progress__title {
  margin: 12px 0 6px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--deep);
}

.page-faq .faq-progress__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--faq-soft);
}

/* ---------- 人工协助 ---------- */

.page-faq .faq-help {
  background: var(--deep);
  border: 1px solid var(--deep);
  box-shadow: 12px 12px 0 rgba(15, 122, 153, 0.22);
}

.page-faq .faq-help__inner {
  padding: clamp(26px, 4.5vw, 48px);
}

.page-faq .faq-help__inner .eyebrow {
  color: var(--sky-light);
}

.page-faq .faq-help__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-faq .faq-help__lead {
  margin: 14px 0 0;
  max-width: 38em;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(248, 250, 251, 0.76);
}

.page-faq .faq-help__contacts {
  display: grid;
  gap: 12px;
  margin: 22px 0 26px;
}

.page-faq .faq-help__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-invert);
}

.page-faq .faq-help__row dt {
  min-width: 5em;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--sky-light);
}

.page-faq .faq-help__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.9375rem, 2.2vw, 1.125rem);
  font-weight: 700;
  color: var(--snow);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-quick__list {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-quick__item:first-child {
    grid-column: 1 / -1;
  }

  .page-faq .flow__svg {
    display: block;
    margin-bottom: 8px;
  }

  .page-faq .flow__steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-faq .faq-progress__list {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-help__contacts {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

  .page-faq .faq-help__row dd {
    margin-top: 8px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: 7fr 5fr;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) 1fr;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list > li {
    flex: 1 1 auto;
  }

  .page-faq .faq-rail__link {
    padding: 12px 0 12px 16px;
    white-space: normal;
    color: var(--slate);
    background: transparent;
    border: 0;
    border-left: 3px solid transparent;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    color: var(--flame);
    border-left-color: var(--flame);
    background: linear-gradient(90deg, rgba(244, 68, 30, 0.07), transparent 70%);
  }

  .page-faq .qa__q {
    padding: 18px 22px;
    font-size: 1.125rem;
  }

  .page-faq .qa__a {
    padding: 0 22px 20px;
  }

  .page-faq .faq-quick__item:first-child {
    padding: clamp(26px, 3vw, 38px);
  }

  .page-faq .faq-groups {
    padding-left: clamp(4px, 1.5vw, 20px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa::before,
  .page-faq .qa__q::after,
  .page-faq .faq-hero__jump a {
    transition: none;
  }

  .page-faq .faq-hero__media {
    transform: none;
  }
}