.page-faq {
  position: relative;
  overflow-x: hidden;
  background-color: var(--c-deep);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 42px 42px;
  color: var(--c-text);
  font-family: var(--font-body);
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ======== Hero 首屏 ======== */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(28px, 5vw, 64px) 0 36px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  z-index: -1;
  width: 46%;
  height: 100%;
  background: linear-gradient(135deg, transparent 20%, rgba(155, 77, 255, 0.12), rgba(255, 106, 0, 0.16));
  clip-path: polygon(24% 0, 100% 0, 82% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero__content {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 6px;
}

.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  margin: 0;
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--c-text-dim);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 6px 0 0;
  font-family: var(--font-headline);
  font-size: clamp(42px, 11vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: var(--c-text);
}

.page-faq .faq-hero__title-sep {
  margin: 0 0.08em;
  color: var(--c-orange);
}

.page-faq .faq-hero__lead {
  max-width: 640px;
  margin: 8px 0 0;
  color: var(--c-text-dim);
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.75;
}

.page-faq .faq-search {
  display: grid;
  gap: 8px;
  max-width: 560px;
  margin-top: 12px;
}

.page-faq .faq-search__label {
  color: var(--c-text-dim);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.page-faq .faq-search__input {
  width: 100%;
  padding: 16px 22px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}

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

.page-faq .faq-search__input:focus {
  border-color: var(--c-cyan);
  background: rgba(255, 255, 255, 0.08);
}

.page-faq .faq-search__tip {
  margin: 0;
  color: var(--c-text-dim);
  font-size: 13px;
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-faq .faq-stat {
  position: relative;
  padding: 18px 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
}

.page-faq .faq-stat::after {
  content: "";
  position: absolute;
  right: -18px;
  bottom: -18px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--c-orange);
  opacity: 0.18;
}

.page-faq .faq-stat:nth-child(2)::after {
  background: var(--c-purple);
}

.page-faq .faq-stat:nth-child(3)::after {
  background: var(--c-cyan);
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--font-headline);
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1;
  color: var(--c-orange-bright);
}

.page-faq .faq-stat:nth-child(2) .faq-stat__num {
  color: var(--c-purple);
}

.page-faq .faq-stat:nth-child(3) .faq-stat__num {
  color: var(--c-cyan);
}

.page-faq .faq-stat:nth-child(4) .faq-stat__num {
  color: var(--c-orange);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 8px;
  color: var(--c-text-dim);
  font-size: 12px;
  letter-spacing: 0.08em;
}

/* ======== 双栏布局 ======== */
.page-faq .faq-layout {
  display: grid;
  gap: 32px;
  padding: 20px 0 72px;
}

.page-faq .faq-sidebar {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-sidebar__heading {
  margin: 0 0 8px;
  color: var(--c-text-dim);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-faq .faq-nav {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}

.page-faq .faq-nav::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-nav__item {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--c-text);
  font-size: 14px;
  text-decoration: none;
  transition: border-color var(--dur-fast), background var(--dur-fast), color var(--dur-fast);
}

.page-faq .faq-nav__item:hover {
  border-color: var(--c-purple);
  background: rgba(155, 77, 255, 0.1);
}

.page-faq .faq-nav__index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-orange);
}

.page-faq .faq-sidebar__art {
  display: none;
}

.page-faq .faq-sidebar__note {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 14px;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--c-text-dim);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-faq .faq-content {
  display: grid;
  gap: 42px;
  min-width: 0;
}

/* ======== 手风琴区块 ======== */
.page-faq .faq-section {
  display: grid;
  gap: 14px;
  scroll-margin-top: 130px;
}

.page-faq .faq-section__head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-faq .faq-section__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-orange), var(--c-purple));
  color: #fff;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transform: skewX(-8deg);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--font-headline);
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.2;
}

.page-faq .faq-section__bar {
  width: 32px;
  height: 4px;
  margin-left: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--c-orange), var(--c-purple));
}

/* ======== 折叠项 ======== */
.page-faq .faq-item {
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-left: 3px solid transparent;
  border-radius: var(--radius-panel);
  background: var(--c-card);
  transition: border-color var(--dur-fast), background var(--dur-fast);
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-orange);
  background: linear-gradient(180deg, #1b2340, #1e2744);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 18px;
  list-style: none;
  cursor: pointer;
  user-select: none;
}

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

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: -2px;
  border-radius: var(--radius-panel);
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  color: var(--c-text);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
}

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 2px;
  background: var(--c-text);
  transform: translate(-50%, -50%);
  transition: transform var(--dur-slow) var(--ease-out);
}

.page-faq .faq-item__icon::before {
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-item__body {
  padding: 0 18px 20px 44px;
  color: var(--c-text-dim);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-item[open] .faq-item__body {
  animation: faq-item-in var(--dur-slow) var(--ease-out);
}

@keyframes faq-item-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ======== 教学图块 ======== */
.page-faq .faq-teach {
  display: grid;
  gap: 18px;
  margin-top: 8px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(155, 77, 255, 0.14), rgba(255, 106, 0, 0.1));
}

.page-faq .faq-teach__img {
  width: 100%;
  border-radius: 14px;
  object-fit: cover;
}

.page-faq .faq-teach__title {
  margin: 0 0 14px;
  font-family: var(--font-headline);
  font-size: 19px;
}

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

.page-faq .faq-teach__step {
  position: relative;
  min-height: 28px;
  padding-left: 38px;
  color: var(--c-text-dim);
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .faq-teach__step::before {
  content: attr(data-step);
  position: absolute;
  top: 0;
  left: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--c-orange);
  color: #0b1026;
  font-size: 12px;
  font-weight: 800;
}

/* ======== 版本对照卡 ======== */
.page-faq .faq-compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 8px;
  align-items: stretch;
  margin-top: 8px;
}

.page-faq .faq-compare__col {
  display: grid;
  gap: 6px;
  justify-items: center;
  padding: 16px 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
}

.page-faq .faq-compare__col--web {
  border-top: 3px solid var(--c-purple);
}

.page-faq .faq-compare__col--app {
  border-top: 3px solid var(--c-orange);
}

.page-faq .faq-compare__name {
  color: var(--c-text);
  font-size: 15px;
  font-weight: 700;
}

.page-faq .faq-compare__desc {
  color: var(--c-text-dim);
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
}

.page-faq .faq-compare__arrow {
  align-self: center;
  color: var(--c-cyan);
  font-family: var(--font-mono);
  font-size: 18px;
}

/* ======== 引导性说明与相关推荐 ======== */
.page-faq .faq-more {
  padding: 14px 18px;
  border-left: 3px solid var(--c-purple);
  border-radius: 0 14px 14px 0;
  background: rgba(155, 77, 255, 0.08);
  color: var(--c-text-dim);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-more a {
  color: var(--c-purple);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .faq-related {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: 6px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.page-faq .faq-related__label {
  color: var(--c-text-dim);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.page-faq .faq-related__link {
  color: var(--c-text-dim);
  font-size: 13px;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  padding-bottom: 2px;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}

.page-faq .faq-related__link:hover {
  color: var(--c-purple);
  border-color: var(--c-purple);
}

/* ======== 联系支持卡 ======== */
.page-faq .faq-contact-card {
  position: relative;
  display: grid;
  gap: 22px;
  margin-top: 10px;
  padding: 24px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  background: linear-gradient(135deg, #1b2340, #1e2744 52%, #2a1b45);
}

.page-faq .faq-contact-card::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -30px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(155, 77, 255, 0.3), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-contact-card__intro {
  display: grid;
  gap: 14px;
  align-content: start;
  position: relative;
  z-index: 1;
}

.page-faq .faq-contact-card__title {
  margin: 0;
  font-family: var(--font-headline);
  font-size: 24px;
}

.page-faq .faq-contact-card__desc {
  margin: 0;
  color: var(--c-text-dim);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-contact__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
}

.page-faq .faq-contact__label {
  color: var(--c-text-dim);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .faq-contact__value {
  color: var(--c-text);
  font-size: 15px;
  font-weight: 600;
  word-break: break-all;
}

/* ======== 平板断点 ======== */
@media (min-width: 720px) {
  .page-faq .faq-teach {
    grid-template-columns: 300px 1fr;
    align-items: center;
  }

  .page-faq .faq-teach__img {
    width: 300px;
    height: 300px;
    object-fit: cover;
  }

  .page-faq .faq-contact-card {
    grid-template-columns: 1fr 1.1fr;
    align-items: center;
  }
}

/* ======== 桌面断点 ======== */
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 52px 0 48px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: end;
  }

  .page-faq .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
    padding-top: 32px;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: 130px;
    display: grid;
    gap: 22px;
  }

  .page-faq .faq-nav {
    display: grid;
    gap: 10px;
    overflow: visible;
  }

  .page-faq .faq-nav__item {
    display: flex;
    width: 100%;
    border-radius: 14px;
  }

  .page-faq .faq-sidebar__art {
    display: block;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    transform: rotate(1.2deg);
    transition: transform var(--dur-slow) var(--ease-out);
  }

  .page-faq .faq-sidebar__art:hover {
    transform: rotate(0);
  }

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

  .page-faq .faq-sidebar__note {
    display: inline-flex;
  }

  .page-faq .faq-item__summary {
    padding: 22px 22px;
  }

  .page-faq .faq-item__body {
    padding: 0 22px 22px 52px;
  }

  .page-faq .faq-contact-card {
    padding: 30px;
  }
}