.page-faq {
  --faq-line: rgba(11, 30, 58, 0.1);
  padding-bottom: 72px;
  font-family: var(--font-body);
  color: var(--ink);
}

/* 面包屑 */
.page-faq .site-breadcrumbs {
  margin: 28px 0 20px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: rgba(11, 30, 58, 0.55);
}

.page-faq .site-breadcrumbs a {
  color: var(--orange);
  text-decoration: none;
}

.page-faq .site-breadcrumbs a:hover {
  text-decoration: underline;
}

.page-faq .site-breadcrumbs__sep {
  padding: 0 6px;
  color: rgba(11, 30, 58, 0.3);
}

/* ===== 首屏海报 ===== */
.page-faq .faq-hero {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  padding: 34px 24px 40px;
  overflow: hidden;
  margin-bottom: 48px;
}

.page-faq .faq-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245, 247, 250, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 247, 250, 0.04) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: '';
  position: absolute;
  right: -90px;
  bottom: -160px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(255, 106, 0, 0.28) 0%, transparent 60%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero__content {
  display: flex;
  flex-direction: column;
}

.page-faq .faq-hero__kicker {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--pulse);
  background: rgba(57, 255, 136, 0.1);
  border: 1px solid rgba(57, 255, 136, 0.35);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.page-faq .faq-hero__kicker::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--pulse);
  border-radius: 50%;
  margin-right: 8px;
  box-shadow: 0 0 10px rgba(57, 255, 136, 0.6);
}

.page-faq .faq-hero__title {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: 0.01em;
  transform: skewX(-4deg);
  margin: 0 0 16px;
}

.page-faq .faq-hero__lead {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.78);
  max-width: 480px;
  margin: 0 0 22px;
}

.page-faq .faq-search {
  position: relative;
  max-width: 460px;
  margin-bottom: 18px;
}

.page-faq .faq-search__input {
  width: 100%;
  background: rgba(245, 247, 250, 0.08);
  border: 1px solid rgba(245, 247, 250, 0.18);
  border-radius: 12px;
  padding: 12px 16px 12px 42px;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(245, 247, 250, 0.48);
}

.page-faq .faq-search__input:focus {
  border-color: var(--orange);
  background: rgba(11, 30, 58, 0.4);
}

.page-faq .faq-search__icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--orange);
  pointer-events: none;
  display: flex;
}

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

.page-faq .faq-hero__tag {
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(245, 247, 250, 0.08);
  border: 1px solid rgba(245, 247, 250, 0.14);
  color: var(--paper);
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-hero__tag:hover {
  border-color: var(--orange);
  background: rgba(255, 106, 0, 0.14);
}

.page-faq .faq-hero__media {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.36);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 400;
  object-fit: cover;
}

.page-faq .faq-hero__media-label {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--pulse);
  background: rgba(11, 30, 58, 0.82);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(57, 255, 136, 0.4);
}

/* ===== 索引背景 ===== */
.page-faq .faq-index {
  position: relative;
  background-image:
    linear-gradient(rgba(11, 30, 58, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 30, 58, 0.045) 1px, transparent 1px);
  background-size: 26px 26px;
  padding: 8px 0 0;
}

/* ===== 问答分区 ===== */
.page-faq .faq-section {
  scroll-margin-top: 110px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: 52px 0 28px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-section__head {
  align-self: start;
}

.page-faq .faq-section__no {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--orange);
  background: var(--ink);
  padding: 6px 12px;
  border-radius: 6px;
  margin-bottom: 14px;
}

.page-faq .faq-section__title {
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 900;
  line-height: 1.15;
  margin: 0 0 12px;
  transform: skewX(-4deg);
}

.page-faq .faq-section__desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(11, 30, 58, 0.66);
}

.page-faq .faq-section__list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ===== 手风琴卡片 ===== */
.page-faq .faq-card {
  background: var(--paper);
  border: 1px solid rgba(11, 30, 58, 0.1);
  border-radius: 16px;
  padding: 18px 20px;
  transition: border-color 0.24s ease, box-shadow 0.24s ease, transform 0.24s ease;
}

.page-faq .faq-card:hover {
  border-color: rgba(255, 106, 0, 0.42);
  box-shadow: 0 10px 30px rgba(3, 10, 22, 0.08);
  transform: translateY(-2px);
}

.page-faq .faq-card[open] {
  border-color: rgba(11, 30, 58, 0.18);
  box-shadow: 0 14px 40px rgba(3, 10, 22, 0.1);
}

.page-faq .faq-card__head {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  list-style: none;
}

.page-faq .faq-card__head::-webkit-details-marker,
.page-faq .faq-card__head::marker {
  display: none;
  content: '';
}

.page-faq .faq-card__num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--orange);
  min-width: 34px;
}

.page-faq .faq-card__tag {
  writing-mode: vertical-rl;
  background: var(--ink);
  color: var(--pulse);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  padding: 10px 6px;
  border-radius: 5px;
  line-height: 1;
  text-transform: uppercase;
}

.page-faq .faq-card__question {
  flex: 1;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-card__toggle {
  position: relative;
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

.page-faq .faq-card__toggle::before {
  content: '';
  position: absolute;
  top: 5px;
  left: 4px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--orange);
  border-bottom: 2px solid var(--orange);
  transform: rotate(-45deg);
  transition: transform 0.28s ease;
}

.page-faq .faq-card[open] .faq-card__toggle::before {
  transform: rotate(45deg);
}

.page-faq .faq-card__body {
  padding: 18px 0 4px 48px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(11, 30, 58, 0.78);
}

.page-faq .faq-card__body p {
  margin: 0 0 12px;
}

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

.page-faq .faq-card__foot {
  text-align: right;
  border-top: 1px dashed rgba(11, 30, 58, 0.1);
  padding-top: 12px;
  margin: 14px 0 0 48px;
}

.page-faq .faq-card__more {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 0, 0.35);
  padding-bottom: 2px;
  transition: border-color 0.2s ease;
}

.page-faq .faq-card__more:hover {
  border-color: var(--orange);
}

/* ===== 跨设备同步视觉 ===== */
.page-faq .faq-sync {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  background: var(--slate);
  color: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
  padding: 24px;
  margin: 56px 0 8px;
}

.page-faq .faq-sync__media {
  overflow: hidden;
  border-radius: 14px;
}

.page-faq .faq-sync__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 700 / 500;
  object-fit: cover;
}

.page-faq .faq-sync__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--pulse);
  margin-bottom: 12px;
}

.page-faq .faq-sync__content h2 {
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 14px;
  transform: skewX(-4deg);
}

.page-faq .faq-sync__content p {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.78);
  max-width: 460px;
}

.page-faq .faq-sync__content .site-btn {
  margin-top: 18px;
}

/* ===== 底部联系 ===== */
.page-faq .faq-contact {
  margin-top: 64px;
  padding: 36px 28px;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-contact::after {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(123, 97, 255, 0.32) 0%, transparent 62%);
  pointer-events: none;
}

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

.page-faq .faq-contact__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--violet);
  margin-bottom: 8px;
}

.page-faq .faq-contact__content h2 {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 900;
  margin-bottom: 10px;
}

.page-faq .faq-contact__content p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 247, 250, 0.72);
  max-width: 520px;
  margin: 0;
}

.page-faq .faq-contact .site-btn {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
}

/* ===== ≥720px ===== */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 44px 36px 52px;
  }

  .page-faq .faq-hero__title {
    font-size: 38px;
  }

  .page-faq .faq-section__title {
    font-size: 32px;
  }

  .page-faq .faq-card__question {
    font-size: 17px;
  }

  .page-faq .faq-card:nth-child(even) {
    transform: rotate(0.5deg);
  }

  .page-faq .faq-card:nth-child(even):hover {
    transform: rotate(0deg) translateY(-2px);
  }

  .page-faq .faq-contact {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 40px 36px;
  }
}

/* ===== ≥900px ===== */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 40px;
  }

  .page-faq .faq-hero__title {
    font-size: 42px;
    line-height: 1.18;
  }

  .page-faq .faq-section {
    grid-template-columns: 280px 1fr;
    gap: 48px;
    padding: 60px 0 32px;
  }

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

  .page-faq .faq-sync {
    grid-template-columns: 5fr 6fr;
    align-items: center;
    padding: 36px;
    margin: 64px 0 12px;
  }

  .page-faq .faq-sync__content h2 {
    font-size: 30px;
  }
}