.page-faq {
  --faq-panel: rgba(21, 29, 43, 0.72);
  --faq-notch: rgba(7, 10, 15, 0.72);
  display: block;
  padding-bottom: clamp(64px, 9vw, 120px);
  background:
    radial-gradient(900px 520px at 88% -8%, rgba(255, 106, 26, 0.12), transparent 62%),
    radial-gradient(760px 480px at -12% 22%, rgba(24, 224, 200, 0.08), transparent 60%),
    var(--c-void);
  color: var(--c-white);
  font-family: var(--font-body);
}

.page-faq .faq-shell {
  width: 100%;
  max-width: var(--shell-w);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.page-faq .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-block: clamp(18px, 3vw, 34px) clamp(10px, 2vw, 18px);
  font-size: 13px;
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--c-mute);
}

.page-faq .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 6px;
  color: rgba(154, 167, 184, 0.45);
}

.page-faq .breadcrumb-link {
  color: var(--c-mute);
  text-decoration: none;
  transition: color 0.16s var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
  padding-block: clamp(6px, 2vw, 16px) clamp(28px, 4vw, 44px);
}

.page-faq .faq-hero__intro > * + * {
  margin-top: 16px;
}

.page-faq .faq-hero .display-title {
  margin: 0;
  font-size: clamp(30px, 6.2vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 62ch;
  color: var(--c-mute);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-hero .eyebrow {
  color: var(--c-orange);
}

.page-faq .faq-hero__signals {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--c-mute);
}

.page-faq .faq-hero__signals li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__signals .mono {
  color: var(--c-cyan);
  font-size: 13px;
}

/* ---------- 三分支入口 ---------- */
.page-faq .faq-branches {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .branch {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--c-orange);
  background: linear-gradient(100deg, rgba(21, 29, 43, 0.92), rgba(14, 20, 32, 0.68));
  color: var(--c-white);
  text-decoration: none;
  transition: transform 0.16s var(--ease), border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-faq .branch:nth-child(2) {
  border-left-color: var(--c-blue);
}

.page-faq .branch:nth-child(3) {
  border-left-color: var(--c-cyan);
}

.page-faq .branch:hover,
.page-faq .branch:focus-visible {
  transform: translateX(4px);
  border-color: var(--line-strong);
  border-left-color: var(--c-orange);
  background: rgba(30, 40, 58, 0.95);
}

.page-faq .branch:nth-child(2):hover,
.page-faq .branch:nth-child(2):focus-visible {
  border-left-color: var(--c-blue);
}

.page-faq .branch:nth-child(3):hover,
.page-faq .branch:nth-child(3):focus-visible {
  border-left-color: var(--c-cyan);
}

.page-faq .branch__no {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-mute);
}

.page-faq .branch__text {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-faq .branch__text strong {
  font-size: 16px;
  letter-spacing: -0.01em;
}

.page-faq .branch__text small {
  color: var(--c-mute);
  font-size: 12.5px;
  line-height: 1.55;
}

.page-faq .branch__arrow {
  font-size: 15px;
  color: var(--c-orange);
}

.page-faq .branch:nth-child(2) .branch__arrow {
  color: var(--c-blue);
}

.page-faq .branch:nth-child(3) .branch__arrow {
  color: var(--c-cyan);
}

/* ---------- 路径总览 ---------- */
.page-faq .faq-atlas {
  display: grid;
  gap: 18px;
  padding-block: clamp(20px, 3vw, 30px) clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-atlas__figure {
  margin: 0;
  aspect-ratio: 5 / 4;
  background: var(--c-deep);
  border: 1px solid var(--line);
}

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

.page-faq .faq-atlas__note p {
  margin: 10px 0 0;
  color: var(--c-mute);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .faq-atlas__note .eyebrow {
  margin: 0;
  color: var(--c-blue);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(24px, 3vw, 36px);
  padding-top: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-orange);
}

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

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  color: var(--c-mute);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .faq-index__list .mono {
  color: var(--c-amber);
  font-size: 11px;
}

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

.page-faq .faq-index__foot {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--c-mute);
}

.page-faq .faq-index__foot a {
  color: var(--c-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 217, 255, 0.35);
}

/* ---------- 章节 ---------- */
.page-faq .phase {
  scroll-margin-top: 96px;
}

.page-faq .phase + .phase {
  margin-top: clamp(42px, 6vw, 72px);
}

.page-faq .phase__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .phase__no {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-orange);
}

.page-faq .phase__title {
  flex: 1 1 220px;
  margin: 0;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.22;
  letter-spacing: -0.03em;
}

.page-faq .phase__lead {
  margin: 16px 0 0;
  color: var(--c-mute);
  font-size: 14.5px;
  line-height: 1.85;
  max-width: 68ch;
}

.page-faq .phase__lead + .phase__lead {
  margin-top: 10px;
}

.page-faq .phase__lead a {
  color: var(--c-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 217, 255, 0.35);
}

.page-faq .phase__lead strong {
  color: var(--c-white);
  font-weight: 600;
}

/* ---------- 步骤 ---------- */
.page-faq .steps {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .step {
  padding: 15px 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .step__head {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.page-faq .step__check {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  width: 18px;
  height: 18px;
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xs);
  background: transparent;
  position: relative;
  cursor: pointer;
  transition: border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-faq .step__check:focus-visible {
  outline: 1px solid var(--c-blue);
  outline-offset: 2px;
}

.page-faq .step__check:checked {
  border-color: var(--c-cyan);
  background: rgba(24, 224, 200, 0.14);
}

.page-faq .step__check:checked::after {
  content: "";
  position: absolute;
  inset: 3px 4px 5px;
  border-left: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
  transform: rotate(-45deg);
}

.page-faq .step__num {
  min-width: 18px;
  font-size: 12px;
  color: var(--c-amber);
}

.page-faq .step__title {
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: color 0.16s var(--ease);
}

.page-faq .step:has(.step__check:checked) .step__title {
  color: var(--c-mute);
  text-decoration: line-through;
  text-decoration-color: rgba(24, 224, 200, 0.55);
}

.page-faq .step__body {
  margin: 9px 0 0 50px;
  color: var(--c-mute);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-faq .step__body p {
  margin: 0;
}

.page-faq .step__body strong {
  color: var(--c-white);
  font-weight: 600;
}

.page-faq .step__body a {
  color: var(--c-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 217, 255, 0.35);
}

.page-faq .step__body .mono {
  color: var(--c-amber);
  font-size: 13px;
}

/* ---------- 界面示意 ---------- */
.page-faq .faq-shot {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  background: var(--c-deep);
}

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

.page-faq .faq-shot figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  color: var(--c-mute);
  font-size: 12.5px;
  line-height: 1.7;
}

/* ---------- 反馈清单面板 ---------- */
.page-faq .phase--panel {
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-left: 2px solid var(--c-orange);
  background: linear-gradient(155deg, rgba(21, 29, 43, 0.88), rgba(14, 20, 32, 0.55));
}

.page-faq .phase--panel .phase__head {
  padding-bottom: 12px;
}

.page-faq .checklist {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  color: var(--c-mute);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .checklist li::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: 9px;
  border-radius: 1px;
  background: var(--c-orange);
}

.page-faq .checklist strong {
  color: var(--c-white);
  font-weight: 600;
}

.page-faq .checklist .mono {
  color: var(--c-amber);
  font-size: 13px;
}

.page-faq .tpl {
  margin: 18px 0 0;
  padding: 16px 18px;
  border: 1px solid var(--line-strong);
  background: var(--faq-notch);
  color: var(--c-amber);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.95;
  white-space: pre-wrap;
  overflow-x: auto;
}

.page-faq .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

/* ---------- 时效 ---------- */
.page-faq .sla {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .sla__card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-top: 1px solid var(--line-cyan);
  background: var(--faq-panel);
}

.page-faq .sla__lv {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
}

.page-faq .sla__time {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-faq .sla__desc {
  margin: 8px 0 0;
  color: var(--c-mute);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-tail {
  display: grid;
  gap: 18px;
  margin-top: clamp(36px, 5vw, 60px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line-orange);
  background: linear-gradient(120deg, rgba(255, 106, 26, 0.12), rgba(7, 10, 15, 0.35) 62%);
}

.page-faq .faq-tail .eyebrow {
  color: var(--c-amber);
}

.page-faq .faq-tail__text {
  margin: 10px 0 0;
  color: var(--c-mute);
  font-size: 14.5px;
  line-height: 1.8;
  max-width: 60ch;
}

.page-faq .faq-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .sla {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-tail {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
    gap: 48px;
  }

  .page-faq .faq-hero .lead {
    font-size: 16px;
  }

  .page-faq .faq-atlas {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: center;
    gap: 34px;
  }

  .page-faq .faq-atlas__figure {
    aspect-ratio: 5 / 3.4;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-body {
    grid-template-columns: 210px minmax(0, 1fr);
    align-items: start;
    gap: 50px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    padding-right: 18px;
    border-right: 1px solid var(--line);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-faq .faq-index__list a {
    padding: 9px 0 9px 14px;
    border: 0;
    border-left: 1px solid var(--line);
    white-space: normal;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    border-left-color: var(--c-orange);
    color: var(--c-white);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .branch,
  .page-faq .step__check,
  .page-faq .step__title,
  .page-faq .breadcrumb-link,
  .page-faq .faq-index__list a {
    transition: none;
  }

  .page-faq .branch:hover,
  .page-faq .branch:focus-visible {
    transform: none;
  }
}
<<<END>>>