.page-faq {
  --faq-shadow: 8px 8px 0 rgba(4, 16, 28, 0.55);
  --faq-line: rgba(53, 214, 196, 0.18);
  --faq-line-soft: rgba(199, 214, 222, 0.14);
  background: var(--deep);
  color: var(--mist);
  padding-bottom: clamp(36px, 6vw, 84px);
  overflow-x: hidden;
}

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

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

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(20px, 4vw, 40px) clamp(30px, 5vw, 64px);
  border-bottom: 1px solid var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: min(560px, 82vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(53, 214, 196, 0.2), rgba(53, 214, 196, 0) 62%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  bottom: -12%;
  left: 34%;
  width: min(320px, 60vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(255, 139, 61, 0.16), rgba(255, 139, 61, 0) 66%);
  pointer-events: none;
}

.page-faq .breadcrumb {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb__link {
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .breadcrumb__link:hover {
  color: var(--orange);
}

.page-faq .breadcrumb__sep {
  color: rgba(199, 214, 222, 0.45);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(2.1rem, 7.2vw, 4.3rem);
  font-weight: 200;
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 54ch;
  font-size: 17px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-jumps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .faq-jump {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--hair-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--mono-ls);
  color: var(--mist);
  text-decoration: none;
  transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease;
}

.page-faq .faq-jump:hover {
  border-color: var(--orange);
  color: var(--paper);
  background: rgba(255, 139, 61, 0.1);
}

.page-faq .faq-hero__badge {
  display: grid;
  gap: 10px;
  align-self: end;
  padding: 20px 22px 22px;
  border: 2px solid var(--orange);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(255, 139, 61, 0.18), rgba(11, 37, 64, 0.92) 62%);
  box-shadow: var(--faq-shadow);
  text-decoration: none;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.page-faq .faq-hero__badge:hover {
  transform: translateY(-4px);
  box-shadow: 12px 12px 0 rgba(4, 16, 28, 0.6);
}

.page-faq .faq-hero__badge-step {
  font-size: 12px;
  color: var(--orange);
}

.page-faq .faq-hero__badge-title {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__badge-note {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 章节头统一 ---------- */

.page-faq .chapter__head {
  max-width: 62ch;
}

.page-faq .chapter__index {
  margin: 0;
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .chapter__title {
  margin: 12px 0 0;
  font-size: clamp(1.5rem, 4vw, 2.15rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .chapter__lede {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

/* ---------- 三步上手 ---------- */

.page-faq .faq-steps {
  padding-block: clamp(34px, 5vw, 68px);
}

.page-faq .faq-steps__grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-faq .step-card {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--panel);
  border: 2px solid var(--steel);
  border-radius: var(--radius);
  box-shadow: var(--faq-shadow);
  transition: transform 200ms ease, border-color 200ms ease;
}

.page-faq .step-card:hover {
  transform: translateY(-4px);
  border-color: var(--hair-strong);
}

.page-faq .step-card__index {
  margin: 0;
  font-size: 12px;
  color: var(--orange);
}

.page-faq .step-card__title {
  margin: 12px 0 10px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .step-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .step-card__foot {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-line);
  font-size: 11.5px;
  color: var(--cyan-soft);
}

/* ---------- 问答组 ---------- */

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

.page-faq .faq-groups__head {
  padding-block: clamp(30px, 4.4vw, 56px) clamp(10px, 2vw, 20px);
}

.page-faq .faq-group {
  padding-block: clamp(28px, 4.4vw, 54px);
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-group--a {
  background: linear-gradient(180deg, rgba(53, 214, 196, 0.08), rgba(6, 24, 38, 0) 68%);
}

.page-faq .faq-group--b {
  background: linear-gradient(180deg, rgba(23, 63, 99, 0.55), rgba(6, 24, 38, 0) 72%);
}

.page-faq .faq-group--c {
  background: linear-gradient(180deg, rgba(255, 139, 61, 0.09), rgba(6, 24, 38, 0) 70%);
}

.page-faq .faq-group--d {
  background: linear-gradient(180deg, rgba(155, 239, 230, 0.07), rgba(6, 24, 38, 0) 70%);
}

.page-faq .faq-group__index {
  margin: 0;
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 10px 0 0;
  font-size: clamp(1.3rem, 3.4vw, 1.8rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-group__lede {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-group__split {
  display: grid;
  gap: 26px;
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-faq .faq-group__figure {
  margin: 0;
}

/* ---------- 手风琴 ---------- */

.page-faq .accordion {
  margin-top: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-group__split .accordion {
  margin-top: 0;
}

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

.page-faq .faq-q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 2px;
  background: transparent;
  border: 0;
  color: var(--paper);
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: 0.01em;
  text-align: left;
  cursor: pointer;
  transition: color 180ms ease;
}

.page-faq .accordion__trigger:hover {
  color: var(--cyan-soft);
}

.page-faq .accordion__trigger[aria-expanded="true"] {
  color: var(--cyan);
}

.page-faq .accordion__state {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--cyan-soft);
  box-shadow: 0 0 0 4px rgba(155, 239, 230, 0.12);
  transition: background-color 200ms ease, box-shadow 200ms ease;
}

.page-faq .accordion__item.is-open .accordion__state,
.page-faq .accordion__trigger[aria-expanded="true"] .accordion__state {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 139, 61, 0.2);
}

.page-faq .accordion__panel {
  padding: 0 2px 20px;
  max-width: 66ch;
}

.page-faq .accordion__panel[hidden] {
  display: none;
}

.page-faq .accordion__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

/* ---------- 步骤 2 图解 ---------- */

.page-faq .faq-map {
  padding-block: clamp(34px, 5vw, 72px);
  border-top: 1px solid var(--faq-line);
  background: linear-gradient(180deg, rgba(11, 37, 64, 0.55), rgba(6, 24, 38, 0) 78%);
}

.page-faq .faq-map__grid {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-faq .faq-map__figure {
  margin: 0;
  border: 2px solid var(--steel);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-map__notes {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
}

.page-faq .faq-map__note {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-map__note:first-child {
  padding-top: 0;
}

.page-faq .faq-map__num {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--orange);
  border-radius: 50%;
  font-size: 12px;
  color: var(--orange);
}

.page-faq .faq-map__note-title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-faq .faq-map__note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 排障清单 ---------- */

.page-faq .faq-fix {
  padding-block: clamp(34px, 5vw, 72px);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-fix__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-faq .faq-check {
  padding: 20px 20px 22px;
  background: rgba(11, 37, 64, 0.72);
  border: 2px solid var(--steel);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius);
}

.page-faq .faq-check__num {
  margin: 0;
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-check__title {
  margin: 10px 0 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-faq .faq-check__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqfix;
  display: grid;
  gap: 10px;
}

.page-faq .faq-check__list li {
  position: relative;
  counter-increment: faqfix;
  padding-left: 28px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-check__list li::before {
  content: counter(faqfix);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan-soft);
  border: 1px solid var(--faq-line-soft);
  border-radius: 4px;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
}

/* ---------- 仍未解决 ---------- */

.page-faq .faq-help {
  padding-block: clamp(34px, 5vw, 64px) 0;
}

.page-faq .faq-help__panel {
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--radius);
}

.page-faq .faq-help__head {
  max-width: 62ch;
}

.page-faq .faq-help .chapter__index {
  color: var(--steel);
}

.page-faq .faq-help__title {
  margin: 12px 0 0;
  font-size: clamp(1.45rem, 4vw, 2.05rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.35;
  color: var(--ink);
}

.page-faq .faq-help__lede {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(4, 16, 28, 0.78);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-help__card {
  padding: 18px 18px 20px;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.42);
}

.page-faq .faq-help__label {
  margin: 0;
  font-size: 11.5px;
  color: rgba(4, 16, 28, 0.6);
}

.page-faq .faq-help__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--ink);
  word-break: break-all;
}

.page-faq .faq-help__sub {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(4, 16, 28, 0.7);
}

.page-faq .faq-help__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(4, 16, 28, 0.28);
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(4, 16, 28, 0.72);
}

.page-faq .faq-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-help__links .btn {
  flex: 1 1 auto;
  min-width: 160px;
  text-align: center;
  text-decoration: none;
}

.page-faq .faq-help__links .btn--ghost {
  border-color: rgba(4, 16, 28, 0.45);
  color: var(--ink);
}

.page-faq .faq-help__links .btn--ghost:hover {
  border-color: var(--ink);
  background: rgba(4, 16, 28, 0.08);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-steps__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-faq .faq-steps__grid > .step-card:nth-child(2) {
    transform: translateY(22px);
  }

  .page-faq .faq-fix__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
    align-items: end;
  }

  .page-faq .faq-map__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-map__notes {
    padding-top: 4px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-group__figure {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-card,
  .page-faq .faq-hero__badge,
  .page-faq .accordion__state,
  .page-faq .faq-jump {
    transition: none;
  }

  .page-faq .step-card:hover,
  .page-faq .faq-hero__badge:hover {
    transform: none;
  }
}