.page-faq {
  --faq-gap: clamp(12px, 1.4vw, 16px);
  padding-bottom: clamp(64px, 9vw, 120px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 76px) 0 clamp(30px, 4vw, 52px);
  border-bottom: 1px solid var(--ink-700);
  background:
    radial-gradient(900px 380px at 10% -12%, rgba(47, 227, 218, 0.15), transparent 70%),
    radial-gradient(720px 320px at 94% 0%, rgba(242, 169, 59, 0.10), transparent 70%),
    linear-gradient(180deg, var(--ink-900), var(--ink-900));
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(22, 50, 77, 0.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 50, 77, 0.55) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px;
  mask-image: radial-gradient(760px 340px at 20% 0%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(760px 340px at 20% 0%, #000 0%, transparent 78%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 5px;
  background: linear-gradient(90deg, var(--sz), var(--cd), var(--gz), var(--szh));
}

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

.page-faq .faq-hero__eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq .faq-hero__title {
  margin: 0 0 20px;
  max-width: 18ch;
  font-size: clamp(30px, 5vw, 58px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--fog-300);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(24px, 3.5vw, 36px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-pill);
  background: rgba(13, 31, 51, 0.8);
  color: var(--fog-300);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.page-faq .faq-hero__pill .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  opacity: 0.85;
}

.page-faq .faq-hero__pill--select { --pill: var(--gz); }
.page-faq .faq-hero__pill--repair { --pill: var(--sz); }
.page-faq .faq-hero__pill--partner { --pill: var(--cd); }
.page-faq .faq-hero__pill--cycle { --pill: var(--szh); }

.page-faq .faq-hero__pill:hover,
.page-faq .faq-hero__pill:focus-visible {
  color: var(--pill);
  border-color: var(--pill);
  transform: translateY(-2px);
}

/* ---------- 双轴布局 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 30px;
  padding-top: clamp(32px, 5vw, 60px);
}

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

.page-faq .faq-nav__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fog-300);
  opacity: 0.75;
}

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

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

.page-faq .faq-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-pill);
  background: var(--ink-800);
  color: var(--fog-300);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-faq .faq-nav__link .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  opacity: 0.85;
}

.page-faq .faq-nav__link--select { --group: var(--gz); }
.page-faq .faq-nav__link--repair { --group: var(--sz); }
.page-faq .faq-nav__link--partner { --group: var(--cd); }
.page-faq .faq-nav__link--cycle { --group: var(--szh); }

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  color: var(--white);
  border-color: var(--group);
}

.page-faq .faq-nav__link.is-active {
  color: var(--group);
  border-color: var(--group);
  background: rgba(13, 31, 51, 0.95);
  font-weight: 600;
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  --group: var(--cyan-400);
  margin-bottom: clamp(48px, 7vw, 84px);
}

.page-faq .faq-group--select { --group: var(--gz); }
.page-faq .faq-group--repair { --group: var(--sz); }
.page-faq .faq-group--partner { --group: var(--cd); }
.page-faq .faq-group--cycle { --group: var(--szh); }

.page-faq [data-section] {
  scroll-margin-top: 128px;
}

.page-faq .faq-group__head {
  position: relative;
  padding-left: 18px;
  margin-bottom: clamp(20px, 2.6vw, 28px);
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: var(--r-pill);
  background: var(--group);
}

.page-faq .faq-group__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--group);
}

.page-faq .faq-group__title {
  margin: 0 0 14px;
  font-size: clamp(23px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-group__verdict {
  max-width: 62ch;
  margin: 0;
  padding: 14px 18px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  background: var(--ink-800);
  color: var(--cyan-200);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 2.6vw, 28px);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog-300);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  margin-bottom: var(--faq-gap);
  overflow: hidden;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.page-faq .faq-item:hover {
  border-color: var(--group);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: var(--group);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: -2px;
}

.page-faq .faq-q__code {
  flex: none;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--group);
  opacity: 0.9;
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--white);
}

.page-faq .faq-q__mark {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--ink-700);
  border-radius: 50%;
  background-image:
    linear-gradient(var(--group), var(--group)),
    linear-gradient(var(--group), var(--group));
  background-size: 9px 1.5px, 1.5px 9px;
  background-position: center center;
  background-repeat: no-repeat;
  transition: transform 220ms ease, border-color 220ms ease;
}

.page-faq .faq-item[open] .faq-q__mark {
  transform: rotate(45deg);
  border-color: var(--group);
}

.page-faq .faq-a {
  padding: 0 20px 22px;
}

.page-faq .faq-item[open] .faq-a {
  animation: faqReveal 220ms ease both;
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-a p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog-300);
}

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

.page-faq .faq-a strong.mono {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--cyan-200);
  font-weight: 500;
}

.page-faq .faq-a a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-a a:hover {
  color: var(--amber-400);
}

/* ---------- 分步说明 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 10px;
  margin: 14px 0 14px;
  padding: 0;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 40px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--fog-300);
}

.page-faq .faq-steps li::before {
    counter-increment: faqstep;
    content: counter(faqstep, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 3px;
    padding: 1px 7px;
    border: 1px solid var(--ink-700);
    border-radius: var(--r-sm);
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.6;
    letter-spacing: 0.08em;
    color: var(--group);
}

/* ---------- 报修时间轴 ---------- */
.page-faq .faq-timeline {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  counter-reset: none;
}

.page-faq .faq-timeline li {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-sm);
  background: rgba(7, 19, 32, 0.72);
}

.page-faq .faq-timeline li .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--group);
}

.page-faq .faq-timeline li strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-timeline li > span:last-child {
  font-size: 13px;
  line-height: 1.65;
  color: var(--fog-300);
}

/* ---------- 结尾对接 ---------- */
.page-faq .faq-outro {
  position: relative;
  overflow: hidden;
  margin-top: clamp(8px, 1.5vw, 20px);
  padding: clamp(26px, 4vw, 48px);
  border: 1px solid var(--ink-700);
  border-radius: var(--r-xl);
  background:
    linear-gradient(135deg, rgba(47, 227, 218, 0.13), rgba(242, 169, 59, 0.10)),
    var(--ink-800);
}

.page-faq .faq-outro::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -70px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 1px solid rgba(47, 227, 218, 0.28);
  background: radial-gradient(circle at center, rgba(47, 227, 218, 0.12), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-outro__eyebrow {
  position: relative;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber-400);
}

.page-faq .faq-outro__title {
  position: relative;
  margin: 0 0 14px;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-outro__text {
  position: relative;
  max-width: 66ch;
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog-300);
}

.page-faq .faq-outro__contact {
  position: relative;
  display: grid;
  gap: 12px;
  margin: 0 0 16px;
  padding: 0;
}

.page-faq .faq-contact__item {
  display: grid;
  gap: 4px;
  padding: 12px 16px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  background: rgba(7, 19, 32, 0.6);
}

.page-faq .faq-contact__item dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-200);
}

.page-faq .faq-contact__item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-contact__item dd a {
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 218, 0.5);
}

.page-faq .faq-contact__item dd a:hover {
  color: var(--cyan-400);
}

.page-faq .faq-outro__note {
  position: relative;
  margin: 0 0 24px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog-300);
  opacity: 0.9;
}

.page-faq .faq-outro__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-a {
    padding: 0 28px 24px 62px;
  }

  .page-faq .faq-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-faq .faq-timeline li {
    border-radius: 0;
    border-right-width: 0;
  }

  .page-faq .faq-timeline li:first-child {
    border-radius: var(--r-sm) 0 0 var(--r-sm);
  }

  .page-faq .faq-timeline li:last-child {
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
    border-right-width: 1px;
  }

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

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(40px, 4.5vw, 64px);
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 108px;
    padding-right: 24px;
    border-right: 1px solid var(--ink-700);
  }

  .page-faq .faq-nav__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-nav__link {
    border-color: transparent;
    border-left: 2px solid var(--ink-700);
    border-radius: 0 12px 12px 0;
    background: transparent;
    padding: 11px 14px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-faq .faq-nav__link:hover {
    background: rgba(13, 31, 51, 0.7);
  }

  .page-faq .faq-nav__link.is-active {
    border-left-color: var(--group);
    background: var(--ink-800);
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-hero__pill,
  .page-faq .faq-nav__link,
  .page-faq .faq-q__mark {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-a {
    animation: none;
  }

  .page-faq .faq-hero__pill:hover,
  .page-faq .faq-item:hover {
    transform: none;
  }
}