/* ========== 支持帮助页（/support/）专属样式 ========== */
.page-faq {
  --faq-deco: linear-gradient(135deg, rgba(212, 175, 55, 0.18) 25%, transparent 25%, transparent 50%, rgba(212, 175, 55, 0.18) 50%, rgba(212, 175, 55, 0.18) 75%, transparent 75%, transparent);
}

/* ---------- 顶部 Hero ---------- */
.page-faq .faq-hero {
  padding: 44px 0 40px;
  background-color: var(--c-white);
  background-image: var(--faq-deco);
  background-size: 26px 26px;
  border-bottom: var(--border-w) solid var(--c-black);
}

.page-faq .breadcrumb {
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--c-gray);
}

.page-faq .breadcrumb a {
  color: var(--c-navy);
  font-weight: 700;
  text-decoration: none;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--c-black);
  text-decoration: underline;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-faq .faq-eyebrow {
  display: inline-block;
  margin: 0 0 10px;
  padding: 4px 10px;
  background: var(--c-lightgray);
  border: 2px solid var(--c-black);
  color: var(--c-navy);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.page-faq .faq-hero__eyebrow {
  background: var(--c-black);
  border-color: var(--c-black);
  color: var(--c-white);
}

.page-faq .faq-hero__text h1 {
  position: relative;
  z-index: 0;
  display: inline-block;
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-size: clamp(38px, 7vw, 68px);
  line-height: 0.95;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--c-black);
}

.page-faq .faq-hero__text h1::after {
  content: "";
  position: absolute;
  left: -6px;
  right: -6px;
  bottom: 6px;
  height: 14px;
  background: var(--c-gold);
  z-index: -1;
}

.page-faq .faq-hero__text > p:not(.faq-eyebrow) {
  max-width: 32em;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-dark);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-faq .faq-hero__stats li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 2px solid var(--c-black);
  background: var(--c-white);
  box-shadow: var(--shadow-sm);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-navy);
}

.page-faq .faq-hero__stats li::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--c-gold);
  flex-shrink: 0;
}

.page-faq .image-frame {
  border: var(--border-w) solid var(--c-black);
  box-shadow: var(--shadow);
  background: var(--c-lightgray);
}

.page-faq .image-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ---------- FAQ 主体 ---------- */
.page-faq .faq-main {
  padding: 52px 0 64px;
  background: var(--c-lightgray);
  scroll-margin-top: 96px;
}

.page-faq .faq-main__heading {
  margin: 0 0 28px;
  font-family: var(--font-heading);
  font-size: clamp(30px, 4.5vw, 42px);
  text-transform: uppercase;
  color: var(--c-black);
}

.page-faq .faq-layout {
  display: grid;
  gap: 32px;
  align-items: start;
}

/* 分类目录 */
.page-faq .faq-catalog__box {
  padding: 24px 20px;
  background: var(--c-white);
  border: var(--border-w) solid var(--c-black);
  box-shadow: var(--shadow);
}

.page-faq .faq-catalog__box h3 {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--c-gold);
  font-family: var(--font-heading);
  font-size: 20px;
  text-transform: uppercase;
  color: var(--c-black);
}

.page-faq .faq-catalog__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}

.page-faq .faq-catalog__list li + li {
  margin-top: 6px;
}

.page-faq .faq-catalog__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--c-lightgray);
  color: var(--c-navy);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-left: 4px solid transparent;
  transition: border-color var(--transition-time), background var(--transition-time), color var(--transition-time);
}

.page-faq .faq-catalog__list a span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 4px;
  background: var(--c-black);
  color: var(--c-white);
  font-size: 12px;
  font-weight: 700;
}

.page-faq .faq-catalog__list a:hover,
.page-faq .faq-catalog__list a:focus-visible {
  border-left-color: var(--c-gold);
  background: var(--c-white);
  color: var(--c-black);
}

.page-faq .faq-catalog__list a:hover span,
.page-faq .faq-catalog__list a:focus-visible span {
  background: var(--c-gold);
  color: var(--c-black);
}

.page-faq .faq-catalog__cta {
  display: block;
  text-align: center;
}

/* 手风琴 */
.page-faq .faq-accordions {
  display: grid;
  gap: 28px;
}

.page-faq .faq-group {
  padding: 20px 18px;
  background: var(--c-white);
  border: var(--border-w) solid var(--c-black);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 96px;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: 22px;
  color: var(--c-black);
}

.page-faq .faq-group__title span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 2px solid var(--c-black);
  background: var(--c-gold);
  color: var(--c-black);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
}

.page-faq .faq-item {
  margin-top: 10px;
  border: 2px solid var(--c-gray);
  background: var(--c-white);
}

.page-faq .faq-item[open] {
  border-color: var(--c-gold);
  box-shadow: 3px 3px 0 rgba(212, 175, 55, 0.5);
}

.page-faq .faq-item summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-black);
  transition: background var(--transition-time);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--c-navy);
  color: var(--c-white);
  font-size: 20px;
  line-height: 1;
  font-weight: 400;
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  background: var(--c-gold);
  color: var(--c-black);
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  background: var(--c-lightgray);
  outline-offset: -1px;
}

.page-faq .faq-item summary:focus-visible {
  outline: 3px solid var(--c-gold);
}

.page-faq .faq-item__body {
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-dark);
}

.page-faq .faq-item__body a {
  color: var(--c-navy);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--c-gold);
  text-decoration-color: var(--c-gold);
}

/* ---------- 使用指南 ---------- */
.page-faq .faq-guide {
  padding: 64px 0;
  background: var(--c-white);
  scroll-margin-top: 96px;
}

.page-faq .faq-guide__head {
  margin-bottom: 36px;
}

.page-faq .faq-guide__head h2,
.page-faq .faq-trouble__head h2,
.page-faq .faq-contact__intro h2 {
  margin: 6px 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(30px, 4.5vw, 44px);
  line-height: 1;
  text-transform: uppercase;
}

.page-faq .faq-guide__head > p:last-child,
.page-faq .faq-trouble__head > p:last-child,
.page-faq .faq-contact__intro > p:not(.faq-eyebrow) {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-dark);
}

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

.page-faq .guide-steps {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .guide-steps::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 16px;
  bottom: 16px;
  width: 3px;
  background: var(--c-gold);
}

.page-faq .guide-step {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  padding-bottom: 28px;
}

.page-faq .guide-step:last-child {
  padding-bottom: 0;
}

.page-faq .guide-step__num {
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--c-white);
  border: var(--border-w) solid var(--c-black);
  box-shadow: var(--shadow-sm);
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--c-navy);
}

.page-faq .guide-step__body h3 {
  margin: 4px 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--c-black);
}

.page-faq .guide-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-dark);
}

.page-faq .faq-guide__media {
  margin: 0;
  align-self: start;
}

.page-faq .faq-guide__media figcaption {
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-gray);
}

/* ---------- 故障排查 ---------- */
.page-faq .faq-trouble {
  padding: 64px 0;
  background: var(--c-navy);
  color: var(--c-white);
  border-top: var(--border-w) solid var(--c-black);
  border-bottom: var(--border-w) solid var(--c-black);
  scroll-margin-top: 96px;
}

.page-faq .faq-trouble__head h2 {
  color: var(--c-white);
}

.page-faq .faq-trouble__head .faq-eyebrow,
.page-faq .faq-contact__intro .faq-eyebrow {
  background: var(--c-gold);
  border-color: var(--c-black);
  color: var(--c-black);
}

.page-faq .faq-trouble__head > p:last-child,
.page-faq .faq-contact__intro > p:not(.faq-eyebrow) {
  color: rgba(255, 255, 255, 0.85);
}

.page-faq .faq-trouble__grid {
  display: grid;
  gap: 24px;
}

.page-faq .trouble-card {
  background: var(--c-white);
  border: var(--border-w) solid var(--c-black);
  box-shadow: 6px 6px 0 var(--c-gold);
  color: var(--c-dark);
}

.page-faq .trouble-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--c-lightgray);
  border-bottom: 3px solid var(--c-black);
}

.page-faq .trouble-card__tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 8px;
  background: var(--c-red);
  color: var(--c-white);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.page-faq .trouble-card__head h3 {
  margin: 0;
  font-size: 17px;
  color: var(--c-black);
}

.page-faq .trouble-card__list {
  margin: 0;
  padding: 16px 18px 20px 36px;
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .trouble-card__list li + li {
  margin-top: 6px;
}

.page-faq .trouble-card__list a {
  color: var(--c-navy);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-faq .trouble-card__list a:hover,
.page-faq .trouble-card__list a:focus-visible {
  color: var(--c-gold);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact {
  padding: 64px 0;
  background: var(--c-black);
  color: var(--c-white);
  scroll-margin-top: 96px;
}

.page-faq .faq-contact__intro h2 {
  color: var(--c-white);
}

.page-faq .faq-contact__note {
  margin-top: 16px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.06);
  border-left: 4px solid var(--c-gold);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.9);
}

.page-faq .faq-contact__intro .btn {
  margin-top: 20px;
}

.page-faq .faq-btn-gold {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-black);
}

.page-faq .faq-btn-gold:hover,
.page-faq .faq-btn-gold:focus-visible {
  background: var(--c-white);
  border-color: var(--c-white);
  color: var(--c-black);
  box-shadow: 4px 4px 0 var(--c-gold);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
}

.page-faq .contact-item {
  padding: 18px 20px;
  background: var(--c-white);
  border: var(--border-w) solid var(--c-black);
  box-shadow: 5px 5px 0 var(--c-gold);
}

.page-faq .contact-item dt {
  margin: 0 0 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--c-navy);
}

.page-faq .contact-item dd {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-black);
  word-break: break-all;
}

/* ---------- 桌面端布局 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .page-faq .faq-layout {
    grid-template-columns: 270px 1fr;
  }

  .page-faq .faq-catalog__box {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-guide__grid {
    grid-template-columns: 1fr 0.85fr;
    align-items: start;
  }

  .page-faq .faq-trouble__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: 1fr 0.9fr;
    align-items: center;
    gap: 48px;
  }
}