.page-faq {
  --faq-side-w: 234px;
  background: var(--c-bg);
  color: var(--c-text);
}

/* ---------- 顶部帮助中心导读 ---------- */

.faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
  background:
    linear-gradient(125deg, rgba(228, 0, 43, 0.16) 0%, rgba(228, 0, 43, 0) 46%),
    var(--c-bg);
}

.faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: 26px;
  padding-bottom: 40px;
}

.faq-hero__stamp {
  display: none;
  position: absolute;
  right: clamp(16px, 4vw, 48px);
  top: 50%;
  transform: translateY(-50%) rotate(5deg) skew(-8deg);
  z-index: 1;
  padding: 14px 20px;
  background: var(--c-primary);
  box-shadow: 0 10px 28px rgba(228, 0, 43, 0.35);
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  font-family: var(--f-headline);
  font-size: 30px;
  line-height: 1;
  color: var(--c-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.faq-hero__stamp small {
  display: block;
  margin-top: 6px;
  font-family: var(--f-data);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.78);
}

.faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--f-headline);
  font-size: clamp(38px, 7vw, 58px);
  line-height: 1.04;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--c-text);
  transform: skew(var(--skew));
}

.faq-hero__desc {
  margin: 14px 0 0;
  font-family: var(--f-editorial);
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text-dim);
  max-width: 640px;
}

/* ---------- 静态搜索框 ---------- */

.faq-search {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 22px;
  max-width: 500px;
  padding: 4px 8px 4px 12px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  transition: border-color 0.25s;
}

.faq-search:focus-within {
  border-color: var(--c-cyan);
}

.faq-search__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--c-text-dim);
  flex: 0 0 auto;
}

.faq-search__input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  outline: none;
  padding: 10px 0;
  font-family: var(--f-body);
  font-size: 14px;
  color: var(--c-text);
}

.faq-search__input::placeholder {
  color: var(--c-text-dim);
  opacity: 0.72;
}

.faq-search__hint {
  display: none;
  font-family: var(--f-data);
  font-size: 11px;
  color: var(--c-text-dim);
  white-space: nowrap;
  padding-right: 6px;
}

/* ---------- 公告板整体布局 ---------- */

.faq-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: 28px;
  padding-bottom: 56px;
}

/* ---------- 侧边栏问题索引 ---------- */

.faq-side__inner {
  display: grid;
  gap: 18px;
}

.faq-side__label {
  margin: 0;
  font-family: var(--f-data);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--c-text-dim);
}

.faq-anchor {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.faq-anchor__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--c-text-dim);
  background: var(--c-bg-alt);
  border-left: 2px solid var(--c-line);
  text-decoration: none;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.faq-anchor__link::before {
  content: attr(data-index);
  font-family: var(--f-data);
  font-size: 11px;
  color: var(--c-primary);
  opacity: 0.85;
}

.faq-anchor__link:hover {
  color: var(--c-text);
  background: var(--c-bg-card);
}

.faq-anchor__link[data-active] {
  color: var(--c-gold-bright);
  background: rgba(255, 184, 0, 0.07);
  border-left-color: var(--c-gold);
}

.faq-side__note {
  padding: 14px 16px;
  background: rgba(255, 184, 0, 0.05);
  border-left: 3px solid var(--c-gold);
}

.faq-side__note p {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-text-dim);
}

.faq-side__note .btn {
  width: 100%;
  text-align: center;
}

.faq-side__decor {
  display: none;
  margin-top: 6px;
  border-top: 1px solid var(--c-line);
  padding-top: 14px;
}

.faq-side__img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center;
  opacity: 0.9;
}

/* ---------- 主内容区 ---------- */

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

.faq-section + .faq-section {
  margin-top: 42px;
}

.faq-section__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--c-line);
}

.faq-section__no {
  flex: 0 0 auto;
  padding: 5px 9px;
  font-family: var(--f-headline);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  font-style: italic;
  color: var(--c-primary);
  background: rgba(228, 0, 43, 0.09);
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  transform: skew(-6deg);
}

.faq-section__title {
  margin: 0;
  font-family: var(--f-headline);
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--c-text);
}

.faq-section__desc {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--c-text-dim);
  line-height: 1.5;
}

/* ---------- FAQ 折叠列表 ---------- */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  border-left: 3px solid transparent;
  transition: border-color 0.25s, background 0.25s;
}

.faq-item[open] {
  border-left-color: var(--c-primary);
  background: var(--c-bg-card);
}

.faq-item__q {
  position: relative;
  cursor: pointer;
  display: block;
  list-style: none;
  padding: 16px 18px 16px 46px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--c-text);
  user-select: none;
}

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

.faq-item__q::before,
.faq-item__q::after {
  content: "";
  position: absolute;
  left: 18px;
  top: 50%;
  background: var(--c-gold);
  transition: transform 0.25s var(--ease), background 0.25s;
}

.faq-item__q::before {
  width: 10px;
  height: 2px;
  transform: translateY(-50%);
}

.faq-item__q::after {
  width: 2px;
  height: 10px;
  left: 22px;
  transform: translateY(-50%);
}

.faq-item__q:hover {
  color: var(--c-gold-bright);
}

.faq-item__q:hover::before,
.faq-item__q:hover::after {
  background: var(--c-primary);
}

.faq-item[open] .faq-item__q::after {
  transform: translateY(-50%) scaleY(0);
}

.faq-item[open] .faq-item__q::before,
.faq-item[open] .faq-item__q::after {
  background: var(--c-primary);
}

.faq-item__a {
  padding: 2px 18px 20px 46px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-dim);
}

.faq-item__a p {
  margin: 0 0 8px;
}

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

.faq-item__a a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.32);
  transition: border-color 0.2s;
}

.faq-item__a a:hover {
  border-bottom-color: var(--c-cyan);
}

.faq-mark {
  background: linear-gradient(transparent 58%, rgba(255, 184, 0, 0.22) 58%);
  color: var(--c-gold-bright);
  font-weight: 600;
  padding: 0 2px;
}

/* ---------- 联系支持卡片 ---------- */

.faq-contact {
  margin-top: 52px;
}

.faq-contact__card {
  position: relative;
  display: grid;
  gap: 28px;
  padding: 30px 22px;
  background-color: var(--c-bg-alt);
  background-image: radial-gradient(ellipse at 92% 4%, rgba(255, 184, 0, 0.1), transparent 48%);
  border: 1px solid var(--c-line);
  overflow: hidden;
}

.faq-contact__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-gold) 55%, transparent 92%);
}

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

.faq-contact__title {
  margin: 8px 0 0;
  font-family: var(--f-headline);
  font-size: clamp(26px, 4.5vw, 38px);
  line-height: 1.1;
  font-weight: 700;
  transform: skew(-2deg);
  color: var(--c-text);
}

.faq-contact__desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-dim);
  max-width: 560px;
}

.faq-contact__rows {
  margin-top: 18px;
  display: grid;
  gap: 8px;
}

.faq-contact__row {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  background: var(--c-bg);
  border-left: 2px solid var(--c-line);
}

.faq-contact__row:nth-child(1) {
  border-left-color: var(--c-gold);
}

.faq-contact__row:nth-child(2) {
  border-left-color: var(--c-primary);
}

.faq-contact__row:nth-child(3) {
  border-left-color: var(--c-cyan);
}

.faq-contact__label {
  font-family: var(--f-data);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-text-dim);
}

.faq-contact__value {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--c-text);
  word-break: break-all;
}

.faq-contact__note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-text-dim);
  opacity: 0.9;
}

.faq-contact .btn {
  margin-top: 18px;
}

.faq-contact__visual {
  display: block;
  border: 1px solid var(--c-line);
  overflow: hidden;
  position: relative;
}

.faq-contact__img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 适度动效 ---------- */

.faq-item[open] .faq-item__a {
  animation: faq-fade 0.3s var(--ease) both;
}

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

/* =====================================================
   响应式增强
   ===================================================== */

@media (min-width: 600px) {
  .faq-search__hint {
    display: inline;
  }
}

@media (min-width: 768px) {
  .faq-hero__stamp {
    display: block;
  }

  .faq-anchor {
    grid-template-columns: repeat(3, 1fr);
  }

  .faq-contact__card {
    padding: 34px 30px;
  }
}

@media (min-width: 960px) {
  .faq-board {
    grid-template-columns: var(--faq-side-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
    padding-top: 36px;
    padding-bottom: 72px;
  }

  .faq-side__inner {
    position: sticky;
    top: 20px;
    align-self: start;
  }

  .faq-anchor {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .faq-anchor__link {
    padding: 10px 12px;
    background: transparent;
    border-left: 3px solid var(--c-line);
  }

  .faq-anchor__link[data-active] {
    background: rgba(255, 184, 0, 0.06);
  }

  .faq-side__decor {
    display: block;
  }

  .faq-contact__card {
    grid-template-columns: minmax(0, 1fr) 260px;
    align-items: stretch;
    gap: 24px;
    padding: 40px;
  }

  .faq-contact__visual {
    min-height: 220px;
  }

  .faq-contact__img {
    height: 100%;
    object-fit: cover;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}