/* ===== 常见问答 / page-faq ===== */
.page-faq {
  --faq-ink-soft: #3d4b43;
  --faq-hairline: rgba(242, 231, 211, 0.14);
  --faq-paper-line: rgba(14, 20, 23, 0.13);
  --faq-shadow: 0 24px 48px rgba(0, 0, 0, 0.42);
  padding: clamp(24px, 4vw, 56px) clamp(16px, 3vw, 48px) clamp(64px, 9vw, 128px);
  background:
    radial-gradient(110% 70% at 88% -10%, rgba(28, 122, 80, 0.34), transparent 62%),
    radial-gradient(90% 60% at 4% 108%, rgba(56, 198, 255, 0.12), transparent 60%),
    var(--night);
  color: var(--paper);
  font-family: var(--font-body);
}

.page-faq .faq-wrap {
  max-width: 1160px;
  margin: 0 auto;
}

/* --- 面包屑 --- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin: 0 10px;
  color: rgba(143, 167, 155, 0.55);
}

.page-faq .breadcrumb a {
  color: var(--volt);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.page-faq .breadcrumb a:hover {
  border-bottom-color: var(--volt);
}

/* --- 首屏 --- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 48px);
  align-items: center;
  padding-bottom: clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--faq-hairline);
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  padding: 6px 14px;
  border: 1px solid rgba(217, 255, 60, 0.35);
  border-radius: var(--radius-pill);
  background: rgba(217, 255, 60, 0.08);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 7.2vw, 88px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: #ffffff;
}

.page-faq .faq-lede {
  max-width: 48ch;
  margin: 0 0 24px;
  font-size: clamp(16px, 1.7vw, 18.5px);
  line-height: 1.85;
  color: rgba(242, 231, 211, 0.9);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13.5px;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-faq .faq-hero__meta b {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__art {
  position: relative;
  margin: 0;
}

.page-faq .faq-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(28, 122, 80, 0.5);
  filter: saturate(0.55) brightness(0.86);
}

.page-faq .faq-hero__art::after {
  content: "";
  position: absolute;
  left: 14%;
  right: 14%;
  bottom: -12px;
  height: 22px;
  background: radial-gradient(closest-side, rgba(217, 255, 60, 0.34), transparent 70%);
  filter: blur(12px);
  pointer-events: none;
}

/* --- 主题筛选 --- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin: clamp(26px, 3.6vw, 44px) 0 clamp(20px, 3vw, 32px);
}

.page-faq .faq-filter__label {
  margin: 0 4px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

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

.page-faq .faq-chip {
  font: inherit;
  font-size: 14px;
  line-height: 1;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(28, 122, 80, 0.6);
  background: rgba(12, 46, 34, 0.8);
  color: var(--paper);
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease,
    transform 0.25s ease;
}

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

.page-faq .faq-chip[aria-pressed="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

/* --- 问答分组 --- */
.page-faq .faq-group {
  position: relative;
  overflow: hidden;
  margin: 0 0 clamp(22px, 3vw, 34px);
  padding: clamp(26px, 3.4vw, 40px) clamp(18px, 2.8vw, 36px) clamp(22px, 3vw, 32px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--paper-edge);
  background: var(--paper);
  color: var(--ink);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(90deg, var(--lime) 0%, var(--turf) 55%, var(--volt) 100%);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: clamp(14px, 2vw, 22px);
  row-gap: 2px;
  align-items: center;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--faq-paper-line);
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(42px, 5.4vw, 64px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--turf);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--faq-ink-soft);
}

.page-faq .faq-group__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 2.6vw, 30px);
  align-items: start;
}

/* --- 折叠问答 --- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-list .accordion__item {
  border-radius: var(--radius-md);
  border: 1px solid rgba(14, 20, 23, 0.14);
  background: rgba(255, 255, 255, 0.55);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.page-faq .faq-list .accordion__item[open] {
  border-color: var(--turf);
  background: #ffffff;
  box-shadow: 0 12px 26px rgba(14, 20, 23, 0.1);
}

.page-faq .faq-list .accordion__trigger {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 16px 54px 16px 20px;
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: background 0.2s ease;
}

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

.page-faq .faq-list .accordion__trigger:hover {
  background: rgba(28, 122, 80, 0.07);
}

.page-faq .faq-list .accordion__trigger::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--turf);
  transition: color 0.25s ease;
}

.page-faq .faq-list .accordion__item[open] .accordion__trigger::after {
  content: "−";
  color: var(--lime);
  background: var(--ink);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  text-align: center;
  line-height: 20px;
  font-size: 16px;
  right: 17px;
}

.page-faq .faq-list .accordion__panel {
  padding: 0 20px 18px;
  margin: 0;
  border-top: 1px dashed rgba(14, 20, 23, 0.16);
  font-size: 15.5px;
  line-height: 1.85;
  color: #26332c;
}

.page-faq .faq-list .accordion__panel > p {
  margin: 14px 0 0;
}

.page-faq .faq-points {
  list-style: none;
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
}

.page-faq .faq-points li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.78;
  color: #26332c;
}

.page-faq .faq-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 4px;
  height: 14px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--turf), var(--lime));
}

/* --- 分组配图 --- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--paper-edge);
  filter: saturate(0.62) brightness(0.94);
}

/* --- 回到组首 --- */
.page-faq .faq-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--turf);
  text-decoration: none;
  border-bottom: 1px dashed rgba(28, 122, 80, 0.55);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-back:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* --- 还没找到答案 --- */
.page-faq .faq-help {
  margin-top: clamp(12px, 2vw, 24px);
  padding: clamp(26px, 3.6vw, 46px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(217, 255, 60, 0.3);
  background:
    linear-gradient(135deg, rgba(28, 122, 80, 0.34), rgba(6, 23, 15, 0.92) 62%),
    var(--stand);
}

.page-faq .faq-help h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.2vw, 36px);
  letter-spacing: -0.01em;
  color: #ffffff;
}

.page-faq .faq-help p {
  max-width: 56ch;
  margin: 0 0 24px;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(242, 231, 211, 0.86);
}

.page-faq .faq-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}

/* --- 页尾一句 --- */
.page-faq .faq-footnote {
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-footnote a {
  color: var(--volt);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 198, 255, 0.45);
}

.page-faq .faq-footnote a:hover {
  border-bottom-color: var(--volt);
}

/* --- 响应式 --- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-group--media .faq-group__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
  }
}

@media (max-width: 640px) {
  .page-faq .faq-group__head {
    grid-template-columns: minmax(0, 1fr);
    row-gap: 8px;
  }

  .page-faq .faq-group__num {
    grid-row: auto;
    font-size: 38px;
  }

  .page-faq .faq-list .accordion__trigger {
    padding-right: 46px;
  }

  .page-faq .faq-filter__label {
    width: 100%;
  }

  .page-faq .faq-help__links .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

@media (min-width: 641px) and (max-width: 899px) {
  .page-faq .faq-hero__art {
    max-width: 560px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-back,
  .page-faq .faq-list .accordion__item {
    transition: none;
  }

  .page-faq .faq-chip:hover {
    transform: none;
  }
}
</main>