.page-faq {
  background: var(--foam);
  color: var(--ink);
}

/* ---------- 面包屑（深底反白） ---------- */
.page-faq .faq-hero__crumbs {
  margin: 0 0 36px;
}
.page-faq .faq-hero__crumbs .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: rgba(245, 250, 255, 0.6);
}
.page-faq .faq-hero__crumbs .crumbs__item {
  display: inline-flex;
  align-items: center;
}
.page-faq .faq-hero__crumbs .crumbs__item + .crumbs__item::before {
  content: "/";
  margin: 0 10px;
  color: rgba(245, 250, 255, 0.32);
}
.page-faq .faq-hero__crumbs .crumbs__link {
  color: rgba(245, 250, 255, 0.88);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 250, 255, 0.3);
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.page-faq .faq-hero__crumbs .crumbs__link:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

/* ---------- 首屏海报层 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 128px;
  background:
    radial-gradient(880px 420px at 84% -14%, rgba(23, 224, 200, 0.16), transparent 62%),
    linear-gradient(178deg, var(--deep-900) 0%, var(--deep-700) 62%, var(--deep-900) 100%);
  color: var(--foam);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 74px;
  background: var(--foam);
  clip-path: polygon(0 100%, 100% 20%, 100% 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 36px;
}

.page-faq .faq-hero__kicker {
  display: inline-block;
  margin: 0 0 20px;
  padding: 6px 14px;
  border: 1px solid rgba(23, 224, 200, 0.42);
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--neon);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.9rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--foam);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(245, 250, 255, 0.78);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: rgba(245, 250, 255, 0.64);
}
.page-faq .faq-hero__facts b {
  font-family: var(--font-numeric);
  font-variant-numeric: tabular-nums;
  font-size: 1.125rem;
  letter-spacing: 0.12em;
  color: var(--neon);
  margin-right: 6px;
}

/* 首屏图片 */
.page-faq .faq-hero__frame {
  margin: 0;
  border: 1px solid rgba(207, 228, 245, 0.18);
  border-radius: var(--radius);
  box-shadow: 0 6px 18px rgba(6, 26, 46, 0.38);
  overflow: hidden;
}
.page-faq .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: inherit;
}

/* ---------- 三步自查 ---------- */
.page-faq .faq-steps {
  position: relative;
  padding-bottom: 44px;
}
.page-faq .faq-steps__head {
  margin: 0 0 14px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: rgba(245, 250, 255, 0.58);
}
.page-faq .faq-steps__list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-steps__item {
  min-width: 0;
}
.page-faq .faq-steps__link {
  display: block;
  height: 100%;
  padding: 16px 18px;
  border: 1px solid rgba(207, 228, 245, 0.2);
  background: rgba(6, 26, 46, 0.42);
  color: var(--foam);
  text-decoration: none;
  transition: transform 0.24s ease, border-color 0.24s ease, background-color 0.24s ease;
}
.page-faq .faq-steps__link:hover,
.page-faq .faq-steps__link:focus-visible {
  border-color: var(--neon);
  background: rgba(12, 53, 87, 0.72);
  transform: translateY(-3px);
}
.page-faq .faq-steps__no {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-numeric);
  font-variant-numeric: tabular-nums;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--neon);
}
.page-faq .faq-steps__title {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.page-faq .faq-steps__desc {
  display: block;
  margin-top: 6px;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: rgba(245, 250, 255, 0.66);
}
.page-faq .faq-steps__wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 40px;
  color: var(--neon);
  opacity: 0.42;
  pointer-events: none;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding: 52px 0;
}
.page-faq .faq-group + .faq-group {
  border-top: 1px solid var(--shallow);
}
.page-faq .faq-group__inner {
  display: grid;
  gap: 24px;
}
.page-faq .faq-group__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.2vw, 2.125rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--deep-900);
}
.page-faq .faq-group__lede {
  margin: 12px 0 0;
  max-width: 30em;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--gull);
}
.page-faq .faq-group__lede a {
  color: var(--tide-500);
  text-decoration: none;
  border-bottom: 1px solid var(--shallow);
  transition: border-color 0.2s ease;
}
.page-faq .faq-group__lede a:hover {
  border-bottom-color: var(--tide-500);
}

.page-faq .faq-group__list {
  border-top: 1px solid var(--shallow);
  min-width: 0;
}

/* 可展开问答 */
.page-faq .qa {
  border-bottom: 1px solid var(--shallow);
  border-left: 2px solid transparent;
  transition: border-color 0.24s ease, background-color 0.24s ease;
}
.page-faq .qa[open] {
  border-left-color: var(--neon);
  background: linear-gradient(90deg, rgba(23, 224, 200, 0.07), rgba(23, 224, 200, 0) 46%);
}
.page-faq .qa__q {
  position: relative;
  display: block;
  cursor: pointer;
  list-style: none;
  padding: 18px 48px 18px 18px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: -0.005em;
  color: var(--deep-900);
  transition: color 0.2s ease;
}
.page-faq .qa__q::-webkit-details-marker {
  display: none;
}
.page-faq .qa__q:hover {
  color: var(--tide-500);
}
.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--tide-500);
  outline-offset: -2px;
}
.page-faq .qa__q::before,
.page-faq .qa__q::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 13px;
  height: 1.5px;
  background: var(--tide-500);
  transition: transform 0.24s ease, opacity 0.24s ease;
}
.page-faq .qa__q::after {
  transform: translateY(-50%);
}
.page-faq .qa__q::before {
  transform: translateY(-50%) rotate(90deg);
}
.page-faq .qa[open] .qa__q::before {
  transform: translateY(-50%) rotate(90deg) scaleX(0);
  opacity: 0;
}

.page-faq .qa__a {
  max-width: 44em;
  padding: 0 48px 22px 18px;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--ink);
  animation: faq-qa-in 0.3s ease both;
}
.page-faq .qa__a p {
  margin: 0;
}
.page-faq .qa__a p + p,
.page-faq .qa__a p + .qa__steps {
  margin-top: 10px;
}
.page-faq .qa__steps {
  display: grid;
  gap: 6px;
  margin: 10px 0 0;
  padding-left: 20px;
  font-size: 0.9375rem;
  line-height: 1.8;
}
.page-faq .qa__steps li::marker {
  color: var(--tide-500);
  font-weight: 700;
}

@keyframes faq-qa-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 中段纹理带 ---------- */
.page-faq .faq-midband {
  padding: 44px 0;
  background: var(--paper);
}
.page-faq .faq-midband__frame {
  margin: 0;
  border: 1px solid var(--shallow);
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---------- 人工通道 ---------- */
.page-faq .faq-help {
  padding: 48px 0 72px;
}
.page-faq .faq-help__card {
  position: relative;
  overflow: hidden;
  padding: 32px 22px;
  border-radius: var(--radius);
  background: linear-gradient(140deg, var(--deep-900) 0%, var(--deep-700) 100%);
  color: var(--foam);
}
.page-faq .faq-help__card::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(23, 224, 200, 0.22), transparent 70%);
  pointer-events: none;
}
.page-faq .faq-help__card .exhibit-label {
  color: rgba(245, 250, 255, 0.7);
}
.page-faq .faq-help__title {
  position: relative;
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 2.8vw, 1.875rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--foam);
}
.page-faq .faq-help__lede {
  position: relative;
  margin: 12px 0 0;
  max-width: 32em;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(245, 250, 255, 0.74);
}
.page-faq .faq-help__list {
  position: relative;
  display: grid;
  gap: 10px;
  margin: 20px 0 28px;
  padding: 0;
  list-style: none;
}
.page-faq .faq-help__list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(245, 250, 255, 0.82);
}
.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 7px;
  height: 7px;
  border: 1px solid var(--neon);
  transform: rotate(45deg);
}
.page-faq .faq-help .btn {
  position: relative;
}

/* ---------- 视口进入 ---------- */
.js-ready .page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.js-ready .page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 34px 0 150px;
  }
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
  .page-faq .faq-group {
    padding: 66px 0;
  }
  .page-faq .faq-help__card {
    padding: 46px 48px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 40px 0 168px;
  }
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    grid-template-areas:
      "copy media"
      "steps steps";
    align-items: center;
    gap: 46px 56px;
  }
  .page-faq .faq-hero__copy {
    grid-area: copy;
  }
  .page-faq .faq-hero__media {
    grid-area: media;
  }
  .page-faq .faq-hero__steps {
    grid-area: steps;
  }
  .page-faq .faq-group {
    padding: 78px 0;
  }
  .page-faq .faq-group__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 64px;
    align-items: start;
  }
  .page-faq .faq-group__head {
    padding-right: 12px;
  }
  .page-faq .qa__q {
    padding: 20px 56px 20px 22px;
  }
  .page-faq .qa__q::before,
  .page-faq .qa__q::after {
    right: 24px;
  }
  .page-faq .qa__a {
    padding: 0 64px 24px 22px;
  }
  .page-faq .faq-help {
    padding: 56px 0 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a {
    animation: none;
  }
  .page-faq .faq-steps__link,
  .page-faq .qa,
  .page-faq .qa__q::before,
  .page-faq .qa__q::after {
    transition: none;
  }
  .js-ready .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}