.page-faq {
  --faq-edge: 2px;
  --faq-gap: clamp(22px, 3.4vw, 40px);
  --faq-ghost: rgba(199, 208, 228, 0.08);
  position: relative;
  padding-bottom: clamp(96px, 13vw, 128px);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: var(--faq-edge) solid var(--c-ink);
  background: var(--c-base);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -12%;
  right: -14%;
  width: 62%;
  height: 132%;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(28, 38, 96, 0.96) 0%, rgba(14, 142, 156, 0.24) 62%, rgba(10, 16, 48, 0) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: 39%;
  width: 6px;
  height: 132%;
  pointer-events: none;
  background: linear-gradient(180deg, var(--c-cyan), rgba(43, 224, 232, 0) 82%);
  transform: skewX(-11deg);
  opacity: 0.75;
}

.page-faq .faq-hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(199, 208, 228, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(199, 208, 228, 0.07) 1px, transparent 1px);
  background-size: 96px 96px;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  padding-block: clamp(38px, 6.5vw, 86px) clamp(44px, 7vw, 92px);
}

.page-faq .faq-hero__copy .crumb {
  margin-bottom: 20px;
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 82px;
  height: 6px;
  margin-top: 22px;
  background: var(--c-orange);
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.85;
  color: var(--c-silver);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* 首屏概况块 */
.page-faq .faq-quick {
  position: relative;
  border: var(--faq-edge) solid var(--c-ink);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
  padding: clamp(18px, 3vw, 26px);
}

.page-faq .faq-quick::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--c-cyan);
}

.page-faq .faq-quick__label {
  margin: 0 0 16px;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

.page-faq .faq-quick__list {
  margin: 0;
  padding-left: 12px;
  display: grid;
  gap: 12px;
}

.page-faq .faq-quick__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-quick__row dt {
  font-size: 14px;
  color: var(--c-silver);
}

.page-faq .faq-quick__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-white);
}

.page-faq .faq-quick__num {
  font-size: 26px;
  font-weight: 900;
  color: var(--c-cyan);
  margin-right: 3px;
}

/* ============ 六步速览 ============ */
.page-faq .faq-overview {
  padding-block: clamp(38px, 5.5vw, 68px);
  background: var(--c-base);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 86px;
}

.page-faq .faq-overview__note {
  margin: 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-silver);
}

.page-faq .faq-figure {
  margin: clamp(22px, 3vw, 32px) 0 0;
  border: var(--faq-edge) solid var(--c-ink);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-silver);
}

.page-faq .faq-roster {
  list-style: none;
  margin: clamp(24px, 3.2vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.page-faq .faq-roster__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 16px 16px 18px;
  border: var(--faq-edge) solid var(--c-ink);
  border-left: 5px solid var(--c-orange);
  background: var(--c-panel);
  box-shadow: 4px 4px 0 rgba(5, 7, 15, 0.8);
  text-decoration: none;
  transition: transform 200ms ease, box-shadow 200ms ease, border-left-color 200ms ease;
}

.page-faq .faq-roster__item:hover,
.page-faq .faq-roster__item:focus-visible {
  transform: translateY(-3px);
  box-shadow: 6px 8px 0 rgba(5, 7, 15, 0.88);
  border-left-color: var(--c-cyan);
}

.page-faq .faq-roster__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
}

.page-faq .faq-roster__title {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--c-white);
}

.page-faq .faq-roster__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-silver);
}

/* ============ 文档双栏 ============ */
.page-faq .faq-doc {
  display: grid;
  gap: var(--faq-gap);
  padding-block: clamp(40px, 5.5vw, 72px) 0;
}

.page-faq .faq-doc__main {
  min-width: 0;
}

.page-faq .faq-part {
  padding-bottom: clamp(30px, 4vw, 52px);
  scroll-margin-top: 86px;
}

.page-faq .faq-part + .faq-part {
  padding-top: clamp(30px, 4vw, 52px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-part .section__head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-part .section__head p {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-silver);
}

/* ============ 步骤卡 ============ */
.page-faq .faq-step {
  position: relative;
  margin-bottom: 22px;
  padding: clamp(18px, 3vw, 28px);
  border: var(--faq-edge) solid var(--c-ink);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
  scroll-margin-top: 104px;
  transition: border-color 200ms ease;
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 4px;
  background: var(--c-cyan-deep);
}

.page-faq .faq-step:target {
  border-color: var(--c-cyan);
  box-shadow: var(--shadow-hard-lg);
}

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

.page-faq .faq-step__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 900;
  line-height: 1;
  color: var(--c-orange);
}

.page-faq .faq-step__head h3 {
  flex: 1 1 220px;
  margin: 0;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  color: var(--c-white);
}

.page-faq .faq-step .prose p {
  max-width: 68ch;
  margin: 0 0 1.1em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-silver);
}

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

.page-faq .faq-step__check {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 4px solid var(--c-orange);
  background: rgba(255, 138, 61, 0.09);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-white);
}

.page-faq .faq-step__checklabel {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-orange);
}

.page-faq .faq-step__copyrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 14px 0 0;
}

.page-faq .faq-step__copynote {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--c-silver);
}

/* 五条自查顺序 */
.page-faq .faq-rules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-rules li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: var(--c-panel-hi);
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-silver);
}

.page-faq .faq-rules__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

/* ============ 主题问答 ============ */
.page-faq .faq-topics {
  padding-block: clamp(34px, 4.6vw, 58px);
  scroll-margin-top: 86px;
}

.page-faq .faq-topics .section__head p {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-silver);
}

.page-faq .faq-topic {
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-topic__title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 800;
  color: var(--c-white);
}

.page-faq .faq-topic__label {
  flex: 0 0 auto;
  padding: 3px 9px;
  border: 1px solid var(--c-silver);
  background: rgba(199, 208, 228, 0.12);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-silver);
}

.page-faq .qa {
  border-left: var(--faq-edge) solid var(--line);
  padding-left: clamp(12px, 2vw, 20px);
}

.page-faq .qa__item {
  border-bottom: 1px solid var(--line);
}

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

.page-faq .qa__trigger {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  padding: 14px 0;
  border: 0;
  background: none;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-white);
  cursor: pointer;
}

.page-faq .qa__trigger::before {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.5;
  color: var(--c-cyan);
}

.page-faq .qa__trigger[aria-expanded="true"]::before {
  content: "−";
  color: var(--c-orange);
}

.page-faq .qa__trigger:hover {
  color: var(--c-cyan);
}

.page-faq .qa__trigger:focus-visible {
  outline: 2px solid var(--c-violet);
  outline-offset: 3px;
}

.page-faq .qa__panel {
  padding: 0 0 16px 26px;
}

.page-faq .qa__panel p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-silver);
}

/* ============ 自查清单 ============ */
.page-faq .faq-checklist {
  padding-block: clamp(34px, 4.6vw, 58px);
  border-top: 1px solid var(--line);
  scroll-margin-top: 86px;
}

.page-faq .faq-checklist .section__head p {
  margin: 10px 0 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-silver);
}

.page-faq .faq-checklist__grid {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-check {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-check li {
  position: relative;
  padding: 12px 14px 12px 46px;
  border: 1px solid var(--line);
  background: var(--c-panel);
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-silver);
}

.page-faq .faq-check li::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 15px;
  width: 16px;
  height: 16px;
  border: 2px solid var(--c-silver);
  background: transparent;
}

.page-faq .faq-check li::after {
  content: "";
  position: absolute;
  left: 19px;
  top: 20px;
  width: 7px;
  height: 3px;
  border-left: 2px solid var(--c-orange);
  border-bottom: 2px solid var(--c-orange);
  transform: rotate(-45deg);
  opacity: 0;
  transition: opacity 180ms ease;
}

.page-faq .faq-check li:hover::after {
  opacity: 1;
}

.page-faq .faq-checklist .faq-figure {
  margin-top: 0;
}

/* ============ 转人工 ============ */
.page-faq .faq-escalate {
  padding-block: clamp(34px, 4.6vw, 58px) clamp(40px, 5vw, 66px);
  scroll-margin-top: 86px;
}

.page-faq .faq-escalate__panel {
  position: relative;
  padding: clamp(22px, 3.4vw, 38px);
  border: var(--faq-edge) solid var(--c-ink);
  background: linear-gradient(150deg, var(--c-panel-hi) 0%, var(--c-panel) 62%);
  box-shadow: var(--shadow-hard-lg);
  overflow: hidden;
}

.page-faq .faq-escalate__panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(200deg, rgba(255, 138, 61, 0.16), rgba(255, 138, 61, 0));
}

.page-faq .faq-escalate h2 {
  position: relative;
  margin: 0 0 16px;
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 900;
  color: var(--c-white);
}

.page-faq .faq-escalate .prose {
  position: relative;
}

.page-faq .faq-escalate .prose p {
  max-width: 66ch;
  margin: 0 0 1.1em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--c-silver);
}

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

.page-faq .faq-escalate__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ============ 右侧固定索引 ============ */
.page-faq .faq-toc {
  display: none;
}

/* ============ 底部六步进度条 ============ */
.page-faq .faq-stepsbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  padding: 8px var(--pad-inline) calc(8px + env(safe-area-inset-bottom, 0px));
  background: rgba(10, 16, 48, 0.94);
  border-top: var(--faq-edge) solid var(--c-ink);
  border-bottom: 1px solid var(--line-warm);
}

.page-faq .faq-stepsbar__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-stepsbar__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-stepsbar__item {
  flex: 0 0 auto;
}

.page-faq .faq-stepsbar__item a {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-bottom: 3px solid transparent;
  background: rgba(18, 26, 68, 0.7);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-silver);
  text-decoration: none;
  white-space: nowrap;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.page-faq .faq-stepsbar__item a:hover,
.page-faq .faq-stepsbar__item a:focus-visible {
  color: var(--c-white);
  border-color: var(--line-strong);
}

.page-faq .faq-stepsbar__item a[data-active] {
  color: var(--c-ink);
  background: var(--c-orange);
  border-color: var(--c-orange);
  border-bottom-color: var(--c-ink);
}

.page-faq .faq-stepsbar__num {
  font-weight: 700;
}

/* ============ 窄屏 ============ */
@media (max-width: 559px) {
  .page-faq .faq-hero::after {
    width: 78%;
    opacity: 0.55;
  }

  .page-faq .faq-hero__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-faq .faq-step__num {
    font-size: 24px;
  }

  .page-faq .faq-stepsbar__item a {
    padding: 7px 9px;
    font-size: 11px;
  }

  .page-faq .faq-quick__list,
  .page-faq .faq-quick__label {
    padding-left: 8px;
  }
}

/* ============ 中屏 ============ */
@media (min-width: 760px) {
  .page-faq .faq-checklist__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.72fr);
    align-items: end;
  }

  .page-faq .faq-quick {
    align-self: end;
  }
}

/* ============ 桌面长文布局 ============ */
@media (min-width: 1080px) {
  .page-faq .faq-doc {
    grid-template-columns: minmax(0, 1fr) 236px;
    align-items: start;
  }

  .page-faq .faq-toc {
    display: block;
    position: sticky;
    top: 92px;
    padding: 4px 0 0;
  }

  .page-faq .faq-toc__label {
    margin: 0 0 12px;
    padding-left: 12px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    color: var(--c-cyan);
  }

  .page-faq .faq-toc__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 8px 0 8px 12px;
    border-left: 2px solid var(--line);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.03em;
    line-height: 1.5;
    color: var(--c-silver);
    text-decoration: none;
    transition: color 180ms ease, border-color 180ms ease;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    color: var(--c-white);
    border-left-color: var(--c-cyan-deep);
  }

  .page-faq .faq-toc__link[aria-current="true"] {
    color: var(--c-cyan);
    border-left-color: var(--c-cyan);
  }

  .page-faq .faq-toc__num {
    font-weight: 700;
  }
}

/* ============ 交互降级 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-roster__item,
  .page-faq .faq-step,
  .page-faq .faq-check li::after,
  .page-faq .faq-stepsbar__item a,
  .page-faq .faq-toc__link {
    transition: none;
  }

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