.page-faq {
  --faq-rule: rgba(27, 84, 96, .75);
  --faq-rule-soft: rgba(27, 84, 96, .42);
  --faq-panel: rgba(15, 58, 66, .72);
  --faq-cut: 12px;
  display: block;
  color: var(--c-foam);
}

.page-faq .page-faq__inner {
  width: var(--shell);
  margin-inline: auto;
}

/* ---------- 首屏 ---------- */

.page-faq__hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 5vw, 52px) 0 clamp(20px, 3vw, 34px);
}

.page-faq__hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .5;
  background-image:
    linear-gradient(rgba(27, 84, 96, .42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 84, 96, .42) 1px, transparent 1px);
  background-size: 62px 62px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 88%);
}

.page-faq__hero::after {
  content: "";
  position: absolute;
  left: -6%;
  right: -6%;
  bottom: 12%;
  height: 2px;
  background: linear-gradient(96deg, transparent 0 22%, rgba(255, 106, 44, .55) 22% 55%, transparent 55%);
  transform: rotate(-6deg);
  pointer-events: none;
}

.page-faq__hero-inner {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: end;
}

.page-faq__hero-main {
  display: grid;
  gap: 16px;
}

.page-faq .breadcrumb {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--c-mist);
}

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

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

.page-faq__title {
  max-width: 13ch;
  margin: 0;
}

.page-faq__lede {
  max-width: 42ch;
}

.page-faq__hero-facts {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq__fact {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  padding: 12px 2px;
  border-bottom: 1px dashed var(--faq-rule-soft);
}

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

.page-faq__fact-key {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-mist);
}

.page-faq__fact-val {
  margin-left: auto;
  font-size: 24px;
  font-weight: 700;
  color: var(--c-orange);
}

.page-faq__fact-unit {
  font-size: 12px;
  color: var(--c-mist);
}

.page-faq__jump {
  position: relative;
  width: var(--shell);
  margin: clamp(20px, 3vw, 30px) auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.page-faq__jump a {
  display: inline-block;
  padding: 7px 13px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-mist);
  text-decoration: none;
  border: 1px solid var(--line-soft);
  background: rgba(15, 58, 66, .5);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: color .14s var(--ease), border-color .14s var(--ease), background-color .14s var(--ease);
}

.page-faq__jump a:hover,
.page-faq__jump a:focus-visible {
  color: var(--c-abyss);
  background: var(--c-orange);
  border-color: var(--c-orange);
}

/* ---------- 通用章节 ---------- */

.page-faq__section {
  padding: clamp(40px, 6vw, 76px) 0;
}

.page-faq__section--alt {
  background: linear-gradient(180deg, rgba(15, 58, 66, .5), rgba(8, 37, 43, .1) 70%);
  border-top: 1px solid var(--faq-rule-soft);
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq__section-title {
  margin: 8px 0 0;
  max-width: 22ch;
}

.page-faq__intro {
  max-width: 40ch;
  margin-top: 16px;
}

.page-faq__note {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-faq__note a {
  color: var(--c-gold);
}

/* ---------- 三步路径 ---------- */

.page-faq__steps-figure {
  margin: clamp(24px, 4vw, 38px) 0 0;
}

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

.page-faq__steps {
  position: relative;
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  gap: clamp(24px, 4vw, 34px);
}

.page-faq__step {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq__pin {
  position: relative;
  z-index: 1;
  width: 14px;
  height: 14px;
  margin-left: 20px;
  background: var(--c-abyss);
  border: 2px solid var(--c-orange);
  transform: rotate(45deg);
}

.page-faq__card {
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(158deg, rgba(27, 84, 96, .38), rgba(8, 37, 43, .58));
  clip-path: polygon(var(--faq-cut) 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%, 0 var(--faq-cut));
  transition: transform .12s var(--ease), border-color .12s var(--ease);
}

.page-faq__card:hover {
  transform: translateY(-2px);
  border-color: var(--c-orange);
}

.page-faq__step-num {
  margin: 0;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--c-orange);
}

.page-faq__card-title {
  margin: 8px 0 0;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 700;
  line-height: 1.25;
}

.page-faq__card-text {
  margin: 12px 0 0;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--c-mist);
}

.page-faq__card-text a {
  color: var(--c-gold);
}

.page-faq__check {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--faq-rule-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-foam);
}

.page-faq__check .tag {
  margin-right: 8px;
}

/* ---------- 栏目结构 ---------- */

.page-faq__split {
  display: grid;
  gap: clamp(16px, 3vw, 30px);
}

.page-faq__split-body .prose:first-child {
  margin-top: 0;
}

.page-faq__modules {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq__module {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 6px 14px;
  padding: 16px 2px;
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq__module-num {
  grid-row: 1 / span 2;
  font-size: 15px;
  color: var(--c-slate);
}

.page-faq__module-name {
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq__module-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-mist);
}

.page-faq__module-count {
  grid-column: 2;
  justify-self: start;
  align-self: start;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-gold);
}

/* ---------- 问答 ---------- */

.page-faq__filters {
  margin-top: clamp(20px, 3vw, 30px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .filter-btn {
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-mist);
  background: rgba(15, 58, 66, .6);
  border: 1px solid var(--line-soft);
  cursor: pointer;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: color .14s var(--ease), background-color .14s var(--ease), border-color .14s var(--ease);
}

.page-faq .filter-btn:hover,
.page-faq .filter-btn:focus-visible {
  color: var(--c-foam);
  border-color: var(--c-orange-soft);
}

.page-faq .filter-btn[aria-pressed="true"],
.page-faq .filter-btn.is-active {
  color: var(--c-foam);
  background: var(--c-tide);
  border-color: var(--c-orange);
}

.page-faq__groups {
  margin-top: clamp(28px, 4vw, 44px);
  display: grid;
  gap: clamp(30px, 5vw, 52px);
}

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

.page-faq__group-tag {
  color: var(--c-gold);
  letter-spacing: .14em;
}

.page-faq__group-title {
  margin: 0 0 12px;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 700;
  line-height: 1.2;
}

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

.page-faq__q-head {
  margin: 0;
}

.page-faq .accordion__trigger {
  width: 100%;
  display: block;
  padding: 15px 0;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-foam);
  background: none;
  border: 0;
  cursor: pointer;
  transition: color .14s var(--ease);
}

.page-faq .accordion__trigger:hover,
.page-faq .accordion__trigger:focus-visible {
  color: var(--c-orange-soft);
}

.page-faq .accordion__item {
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq .accordion__panel {
  padding: 0 0 16px;
}

.page-faq .accordion__panel p {
  margin: 0 0 10px;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--c-mist);
}

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

.page-faq .accordion__panel a {
  color: var(--c-gold);
}

.page-faq__next {
  padding-left: 12px;
  border-left: 2px solid var(--c-orange);
  color: var(--c-foam) !important;
}

/* ---------- 术语速查 ---------- */

.page-faq__glossary {
  margin-top: clamp(24px, 4vw, 38px);
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-faq__term-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(201, 216, 217, .22);
}

.page-faq__term {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px 16px;
  align-items: baseline;
  padding: 12px 2px;
  border-bottom: 1px solid rgba(201, 216, 217, .22);
}

.page-faq__term-word {
  position: relative;
  display: inline-block;
  justify-self: start;
  font-size: .98rem;
  font-weight: 600;
  color: var(--c-foam);
  border-bottom: 1px dashed var(--c-slate);
  cursor: help;
}

.page-faq__term-word:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 3px;
}

.page-faq__term-hint {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  z-index: 6;
  width: max-content;
  max-width: min(250px, 62vw);
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--c-foam);
  background: var(--c-abyss);
  border: 1px solid var(--c-orange);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity .16s var(--ease), transform .16s var(--ease), visibility .16s;
}

.page-faq__term-word:hover .page-faq__term-hint,
.page-faq__term-word:focus .page-faq__term-hint,
.page-faq__term-word:focus-within .page-faq__term-hint {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.page-faq__term-where {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-mist);
}

.page-faq__glossary-figure {
  margin: 0;
}

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

/* ---------- 兜底联系 ---------- */

.page-faq__stuck {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-faq__stuck-main .prose {
  max-width: 42ch;
}

.page-faq__stuck-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq__stuck-aside {
  align-self: start;
}

.page-faq__aside-title {
  margin: 0 0 12px;
  font-size: 14px;
  letter-spacing: .12em;
  color: var(--c-gold);
}

.page-faq__aside-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-mist);
}

.page-faq__aside-list li::marker {
  color: var(--c-orange);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq__split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-faq__module {
    grid-template-columns: 56px minmax(0, 1.1fr) minmax(0, 1.5fr) 72px;
    align-items: baseline;
    gap: 4px 20px;
    padding: 18px 2px;
  }

  .page-faq__module-num {
    grid-row: auto;
    font-size: 16px;
  }

  .page-faq__module-count {
    grid-column: 4;
    justify-self: end;
  }

  .page-faq__glossary {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .6fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq__hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-faq__hero-facts {
    align-self: end;
  }

  .page-faq__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

  .page-faq__steps::before {
    content: "";
    position: absolute;
    top: 7px;
    left: 24px;
    right: 24px;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--c-orange) 0 14px, transparent 14px 30px);
    opacity: .7;
    pointer-events: none;
  }

  .page-faq__group {
    grid-template-columns: 66px minmax(0, 1fr);
    gap: 22px;
  }

  .page-faq__group-tag {
    padding-top: 4px;
  }

  .page-faq__stuck {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-faq {
    --faq-cut: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq__card,
  .page-faq__jump a,
  .page-faq .filter-btn,
  .page-faq .accordion__trigger,
  .page-faq__term-hint {
    transition: none !important;
  }

  .page-faq__card:hover {
    transform: none;
  }

  .page-faq__term-hint {
    transform: none;
  }
}