.page-faq {
  padding-top: clamp(84px, 12vh, 126px);
  padding-bottom: clamp(72px, 10vw, 140px);
  overflow-x: clip;
}

.page-faq [id] {
  scroll-margin-top: calc(var(--rail-h) + 28px);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(28px, 4vw, 48px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -48px -24px 0;
  background-image:
    linear-gradient(to right, rgba(42, 52, 65, 0.4) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 52, 65, 0.4) 1px, transparent 1px);
  background-size: 120px 120px;
  -webkit-mask-image: radial-gradient(ellipse at 18% 0%, #000 0%, transparent 68%);
  mask-image: radial-gradient(ellipse at 18% 0%, #000 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero__copy,
.page-faq .faq-hero__media {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__title {
  margin: 0 0 20px;
  max-width: 20ch;
  font-size: clamp(30px, 5.2vw, 66px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero__lead {
  max-width: 58ch;
  margin: 0;
}

.page-faq .faq-hero__media {
  margin: 0;
  align-self: stretch;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(24px, 3.5vw, 36px);
}

.page-faq .faq-jump__item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--white);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.24s, background 0.24s, color 0.24s;
}

.page-faq .faq-jump__item:hover,
.page-faq .faq-jump__item:focus-visible {
  border-color: var(--neon);
  background: var(--neon-soft);
  color: var(--neon);
}

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

/* ---------- 问题分组 ---------- */

.page-faq .faq-group {
  margin-top: clamp(56px, 8vw, 112px);
}

.page-faq .faq-group__head {
  position: relative;
  display: grid;
  gap: 10px;
  padding-top: 20px;
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 76px;
  height: 3px;
  background: linear-gradient(90deg, var(--neon), rgba(200, 255, 61, 0));
  transform: skewX(-24deg);
}

.page-faq .faq-group__head .section-title {
  margin: 0;
  max-width: 24ch;
}

.page-faq .faq-group__lede {
  max-width: 62ch;
  margin: 14px 0 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-group__body {
  display: grid;
  gap: 28px;
  margin-top: clamp(24px, 3.5vw, 40px);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  display: grid;
  min-width: 0;
}

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

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

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, var(--neon-soft), transparent 72%);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 14px 20px 12px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(16px, 1.6vw, 19px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
  transition: color 0.24s;
}

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

.page-faq .faq-item__q:hover {
  color: var(--neon);
}

.page-faq .faq-item__no {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blue);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__q::after {
  content: "";
  flex: none;
  align-self: center;
  width: 9px;
  height: 9px;
  margin-left: auto;
  border-right: 2px solid var(--mist);
  border-bottom: 2px solid var(--mist);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.28s ease, border-color 0.24s;
}

.page-faq .faq-item[open] .faq-item__q::after {
  border-color: var(--neon);
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 2px 18px 26px 12px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-item__a > p {
  margin: 0 0 12px;
}

.page-faq .faq-item__note {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--neon);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-inline-link {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 169, 255, 0.45);
  transition: color 0.24s, border-color 0.24s;
}

.page-faq .faq-inline-link:hover {
  color: var(--neon);
  border-color: var(--neon);
}

/* ---------- 步骤清单 ---------- */

.page-faq .step-list {
  counter-reset: step;
  display: grid;
  gap: 11px;
  margin: 0 0 6px;
  padding: 0;
  list-style: none;
}

.page-faq .step-list > li {
  position: relative;
  padding-left: 42px;
  color: var(--white);
  font-size: 15px;
  line-height: 1.72;
}

.page-faq .step-list > li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 3px;
  left: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--neon);
}

/* ---------- 刻度侧栏 ---------- */

.page-faq .faq-gauge {
  display: none;
}

/* ---------- 规则入口 ---------- */

.page-faq .faq-rules {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(64px, 9vw, 120px);
  padding-top: clamp(32px, 4vw, 48px);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-rules__copy .section-title {
  margin: 12px 0 16px;
  max-width: 22ch;
}

.page-faq .faq-rules__copy > p {
  max-width: 60ch;
  margin: 0 0 18px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

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

.page-faq .faq-rules__paths li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  border-left: 2px solid var(--line);
  background: var(--panel);
  color: var(--white);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-rules__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--neon);
}

.page-faq .faq-rules__note {
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.75;
  margin-bottom: 0;
}

/* ---------- 未解决帮助区 ---------- */

.page-faq .faq-help {
  position: relative;
  overflow: hidden;
  margin-top: clamp(64px, 9vw, 128px);
  padding: clamp(28px, 5vw, 56px);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(200, 255, 61, 0.18), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-help .section-title {
  margin: 12px 0 16px;
  max-width: 22ch;
}

.page-faq .faq-help__lede {
  max-width: 62ch;
  margin: 0 0 clamp(24px, 3vw, 36px);
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

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

.page-faq .faq-help__card {
  padding: 16px 18px;
  border-left: 2px solid var(--neon);
  background: var(--panel-2);
  min-width: 0;
}

.page-faq .faq-help__label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-help__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.5vw, 16px);
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__checklist-wrap {
  margin-top: clamp(24px, 3vw, 36px);
}

.page-faq .faq-help__sub {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--white);
}

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

.page-faq .faq-help__checklist li {
  position: relative;
  padding-left: 24px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-help__checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 6px;
  border-left: 2px solid var(--neon);
  border-bottom: 2px solid var(--neon);
  transform: rotate(-45deg);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 3.5vw, 40px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  .page-faq .faq-group__body {
    grid-template-columns: minmax(0, 1fr) 128px;
    gap: 40px;
  }

  .page-faq .faq-gauge {
    display: block;
    align-self: start;
    padding-left: 20px;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-gauge__num {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 40px;
    line-height: 1;
    color: var(--neon);
  }

  .page-faq .faq-gauge__label {
    margin: 8px 0 18px;
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--mist);
  }

  .page-faq .faq-gauge__ticks {
    display: grid;
    gap: 9px;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .page-faq .faq-gauge__ticks li {
    height: 2px;
    background: var(--line);
  }

  .page-faq .faq-gauge__ticks li:first-child {
    background: var(--neon);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-rules {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: center;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__q::after,
  .page-faq .faq-jump__item,
  .page-faq .faq-inline-link {
    transition: none;
  }
}