/* ==========================================================
   帮助中心页面专属样式 — 作用域 .page-faq
   ========================================================== */

.page-faq {
  position: relative;
  background:
    radial-gradient(1100px 560px at 10% -6%, rgba(200, 250, 75, 0.08), transparent 62%),
    radial-gradient(900px 520px at 98% 42%, rgba(46, 42, 94, 0.55), transparent 60%),
    var(--night);
  color: var(--paper);
  font-family: var(--font-body);
  padding-block: 84px 100px;
  overflow-x: hidden;
}

.page-faq .faq-wrap {
  width: min(100% - 36px, 1080px);
  margin-inline: auto;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 34px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--line);
}

.page-faq .faq-crumb a {
  color: var(--line);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-faq .faq-crumb [aria-current] {
  color: rgba(244, 241, 230, 0.86);
}

/* ---------- 页首 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 30px;
  align-items: end;
}

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

.page-faq .faq-hero .eyebrow {
  color: var(--lime);
}

.page-faq .faq-h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 8.2vw, 70px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(244, 241, 230, 0.8);
}

.page-faq .faq-hero__figure {
  margin: 0;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(200, 250, 75, 0.3);
  aspect-ratio: 1 / 1;
  max-width: 320px;
  width: 100%;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 查找区 ---------- */
.page-faq .faq-finder {
  margin-top: 54px;
  padding: 26px 22px 28px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(11, 58, 46, 0.95), rgba(5, 35, 28, 0.9));
  border: 1px solid rgba(200, 250, 75, 0.24);
  box-shadow: 0 22px 48px -32px rgba(0, 0, 0, 0.9);
}

.page-faq .faq-finder__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3.4vw, 26px);
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-finder__label {
  display: block;
  font-family: var(--font-label);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 8px;
}

.page-faq .search-field {
  display: block;
  width: 100%;
  padding: 15px 20px;
  border-radius: 999px;
  border: 1px solid rgba(126, 154, 140, 0.5);
  background: rgba(5, 35, 28, 0.75);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  outline: none;
  transition: border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-faq .search-field::placeholder {
  color: rgba(126, 154, 140, 0.95);
}

.page-faq .search-field:focus {
  border-color: var(--lime);
  box-shadow: 0 0 0 3px rgba(200, 250, 75, 0.18);
}

.page-faq .faq-finder__hint {
  margin: 10px 2px 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(126, 154, 140, 1);
}

.page-faq .faq-cats {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 17px;
  border-radius: 999px;
  border: 1px solid rgba(126, 154, 140, 0.45);
  background: rgba(20, 81, 62, 0.4);
  color: rgba(244, 241, 230, 0.92);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: background 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .filter-chip:hover,
.page-faq .filter-chip:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  outline: none;
}

.page-faq .faq-cats__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  opacity: 0.75;
}

/* ---------- 区块通用 ---------- */
.page-faq .faq-block {
  margin-top: 84px;
  scroll-margin-top: 96px;
}

.page-faq .faq-block__head {
  max-width: 46em;
  margin-bottom: 28px;
}

.page-faq .faq-block__head .eyebrow {
  color: var(--lime);
}

.page-faq .faq-block__head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(27px, 5vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-block__desc {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 241, 230, 0.76);
}

.page-faq .faq-block__note {
  margin: 34px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 241, 230, 0.66);
}

.page-faq .faq-block__note a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 250, 75, 0.42);
  transition: border-color 180ms var(--ease);
}

.page-faq .faq-block__note a:hover,
.page-faq .faq-block__note a:focus-visible {
  border-bottom-color: var(--lime);
}

/* ---------- 手风琴 ---------- */
.page-faq .accordion {
  display: grid;
  gap: 12px;
}

.page-faq .accordion__item {
  --acc: var(--line);
  position: relative;
  border-radius: var(--radius-md);
  background: rgba(20, 81, 62, 0.38);
  border: 1px solid rgba(126, 154, 140, 0.26);
  border-left: 4px solid var(--acc);
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
  overflow: hidden;
}

.page-faq .accordion__item:hover {
  background: rgba(20, 81, 62, 0.56);
}

.page-faq .accordion__item.is-open {
  background: rgba(20, 81, 62, 0.72);
  border-color: rgba(200, 250, 75, 0.36);
  border-left-color: var(--lime);
}

.page-faq .accordion__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}

.page-faq .accordion__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 19px 20px;
  background: none;
  border: 0;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16.5px;
  font-weight: 500;
  line-height: 1.65;
  text-align: left;
  cursor: pointer;
  transition: color 180ms var(--ease);
}

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

.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -4px;
}

.page-faq .accordion__trigger::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-right: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  transform: rotate(45deg);
  transition: transform 260ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .accordion__item.is-open .accordion__trigger::after {
  transform: rotate(-135deg);
  border-color: var(--lime);
}

.page-faq .accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 260ms var(--ease);
}

.page-faq .accordion__item.is-open .accordion__panel {
  grid-template-rows: 1fr;
}

.page-faq .accordion__panel-inner {
  overflow: hidden;
}

.page-faq .accordion__panel-inner p {
  margin: 0;
  padding: 0 20px 20px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(244, 241, 230, 0.8);
}

/* ---------- 旧版本档案区 ---------- */
.page-faq .faq-legacy {
  padding: 30px 20px 34px;
  border-radius: 30px;
  background: radial-gradient(125% 120% at 0% 0%, #2E2A5E 0%, #221F4A 52%, #161432 100%);
  border: 1px solid rgba(200, 250, 75, 0.18);
  box-shadow: 0 30px 60px -40px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-legacy .faq-block__desc {
  color: rgba(244, 241, 230, 0.78);
}

.page-faq .faq-legacy__figure {
  margin: 0 0 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(244, 241, 230, 0.16);
  aspect-ratio: 2 / 1;
}

.page-faq .faq-legacy__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-legacy__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-faq .faq-legacy__cell {
  position: relative;
  padding: 20px 18px 48px;
  border-radius: var(--radius-sm);
  background: rgba(244, 241, 230, 0.06);
  border: 1px solid rgba(244, 241, 230, 0.14);
  transition: background 180ms var(--ease), border-color 180ms var(--ease), transform 220ms var(--ease);
}

.page-faq .faq-legacy__cell:hover {
  background: rgba(244, 241, 230, 0.1);
  border-color: rgba(200, 250, 75, 0.45);
  transform: translateY(-3px);
}

.page-faq .faq-legacy__cell h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17.5px;
  line-height: 1.42;
  color: var(--paper);
}

.page-faq .faq-legacy__cell p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(244, 241, 230, 0.74);
}

.page-faq .faq-legacy__ver {
  position: absolute;
  right: 16px;
  bottom: 14px;
  padding: 3px 11px;
  border-radius: 999px;
  border: 1px solid rgba(200, 250, 75, 0.42);
  background: rgba(5, 35, 28, 0.6);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--lime);
}

/* ---------- 反馈时效刻度 ---------- */
.page-faq .faq-ruler {
  padding: 26px 20px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(11, 58, 46, 0.92), rgba(5, 35, 28, 0.86));
  border: 1px solid rgba(126, 154, 140, 0.3);
}

.page-faq .faq-ruler__track {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--lime) 0%, var(--lime-2) 46%, rgba(126, 154, 140, 0.32) 100%);
}

.page-faq .faq-ruler__marks {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-ruler__mark {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 12px;
  align-items: start;
}

.page-faq .faq-ruler__dot {
  display: block;
  width: 13px;
  height: 13px;
  margin-top: 5px;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--lime);
}

.page-faq .faq-ruler__body {
  display: block;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(244, 241, 230, 0.78);
}

.page-faq .faq-ruler__t {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--lime);
}

.page-faq .faq-ruler__d {
  display: block;
  margin-top: 2px;
}

/* ---------- 提交前置确认 ---------- */
.page-faq .faq-prepare {
  margin-top: 30px;
  padding: 24px 20px 26px;
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(112, 40, 58, 0.42), rgba(46, 42, 94, 0.32));
  border: 1px solid rgba(255, 106, 61, 0.3);
}

.page-faq .faq-prepare h3 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-checks {
  display: grid;
  gap: 10px;
}

.page-faq .faq-check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(5, 35, 28, 0.42);
  border: 1px solid rgba(126, 154, 140, 0.28);
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(244, 241, 230, 0.84);
  cursor: pointer;
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-check-item:hover {
  border-color: rgba(200, 250, 75, 0.4);
}

.page-faq .faq-check-item:has(.faq-check:checked) {
  background: rgba(200, 250, 75, 0.09);
  border-color: rgba(200, 250, 75, 0.5);
}

.page-faq .faq-check {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 4px 0 0;
  border-radius: 5px;
  border: 1.5px solid var(--line);
  background: transparent;
  cursor: pointer;
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-check:checked {
  background: var(--lime);
  border-color: var(--lime);
}

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

.page-faq .faq-cta {
  margin: 22px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  opacity: 0.6;
  transition: opacity 240ms var(--ease);
}

.page-faq .faq-checks:has(#faq-ck-version:checked):has(#faq-ck-time:checked):has(#faq-ck-detail:checked) ~ .faq-cta {
  opacity: 1;
}

.page-faq .faq-cta__btn {
  display: inline-flex;
  align-items: center;
  padding: 13px 26px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--lime);
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-cta__btn:hover,
.page-faq .faq-cta__btn:focus-visible {
  background: transparent;
  color: var(--lime);
}

.page-faq .faq-cta__alt {
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 241, 230, 0.76);
  word-break: break-all;
}

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

  .page-faq .faq-finder {
    padding: 30px 28px 32px;
  }

  .page-faq .faq-legacy {
    padding: 36px 30px 40px;
  }

  .page-faq .faq-ruler {
    padding: 30px 28px 28px;
  }

  .page-faq .faq-prepare {
    padding: 28px 26px 30px;
  }

  .page-faq .accordion__trigger {
    padding: 21px 24px;
    font-size: 17px;
  }

  .page-faq .accordion__panel-inner p {
    padding: 0 24px 22px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq {
    padding-block: 104px 130px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.72fr);
    gap: 52px;
    align-items: end;
  }

  .page-faq .faq-hero__figure {
    margin-bottom: 8px;
  }

  .page-faq .faq-block {
    margin-top: 112px;
  }

  .page-faq .faq-cats {
    gap: 11px;
  }

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

  .page-faq .faq-ruler {
    padding: 34px 34px 30px;
  }

  .page-faq .faq-ruler__marks {
    position: relative;
    display: block;
    height: 84px;
    margin-top: 22px;
  }

  .page-faq .faq-ruler__mark {
    position: absolute;
    top: 0;
    display: block;
    width: 152px;
  }

  .page-faq .faq-ruler__mark:nth-child(1) { left: 0; }
  .page-faq .faq-ruler__mark:nth-child(2) { left: 23%; }
  .page-faq .faq-ruler__mark:nth-child(3) { left: 53%; }
  .page-faq .faq-ruler__mark:nth-child(4) { left: 100%; transform: translateX(-100%); }

  .page-faq .faq-ruler__dot {
    margin: 0 0 10px;
  }

  .page-faq .faq-ruler__mark:nth-child(4) .faq-ruler__dot {
    margin-left: auto;
  }

  .page-faq .faq-ruler__mark:nth-child(4) .faq-ruler__body {
    text-align: right;
  }

  .page-faq .faq-ruler__body {
    font-size: 14px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__figure {
    max-width: 100%;
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion__panel,
  .page-faq .accordion__trigger::after,
  .page-faq .accordion__item,
  .page-faq .accordion__trigger,
  .page-faq .filter-chip,
  .page-faq .faq-cta,
  .page-faq .faq-check,
  .page-faq .faq-check-item,
  .page-faq .faq-legacy__cell,
  .page-faq .search-field {
    transition: none;
  }

  .page-faq .faq-legacy__cell:hover {
    transform: none;
  }
}