/* ============================================================
   使用指南 /guide/ —— 页面专属样式
   作用域：.page-faq
   ============================================================ */

.page-faq {
  --faq-ink-soft: rgba(255, 255, 255, 0.76);
  --faq-hair: var(--line);
  --faq-lift: 0 10px 26px rgba(11, 27, 43, 0.12);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding: 18px 0 0;
}

/* ---------- 首屏：框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  color: var(--flag-white);
  background: linear-gradient(158deg, var(--ink) 0%, var(--night) 58%, #10334f 100%);
  box-shadow: var(--shadow-2);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(111, 211, 232, 0.22) 0%, transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
  padding: 30px 22px 34px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--glacier);
}

.page-faq h1 {
  margin: 0 0 14px;
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--flag-white);
}

.page-faq .faq-hero__lead-text {
  margin: 0;
  max-width: 56ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  background: var(--glass-line);
  overflow: hidden;
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  padding: 11px 14px;
  background: var(--glass);
  font-size: 14px;
  line-height: 1.6;
  color: var(--faq-ink-soft);
}

.page-faq .faq-hero__facts .mono {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--glacier);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-hero__media .media-frame {
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--faq-lift);
}

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

@media (min-width: 620px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
    gap: 40px;
    padding: 44px 46px 48px;
  }
}

/* ---------- 分类索引条 ---------- */
.page-faq .faq-index {
  display: grid;
  gap: 1px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: var(--faq-hair);
  overflow: hidden;
}

.page-faq .faq-index__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  background: var(--paper-2);
  color: var(--night);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-index__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--flag-blue);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.2s ease;
}

.page-faq .faq-index__item:hover {
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-index__item:hover::before,
.page-faq .faq-index__item:focus-visible::before {
  transform: scaleY(1);
}

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

.page-faq .faq-index__num {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

@media (min-width: 700px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
}

/* ---------- 筛选栏 ---------- */
.page-faq .filterbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 28px;
  padding: 14px 0;
  border-top: 1px solid var(--faq-hair);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .filterbar__label {
  margin-right: 4px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-faq .filter-status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
}

.page-faq .chip {
  font-family: var(--font-sans);
}

.page-faq .chip[aria-pressed="true"] {
  background: var(--night);
  border-color: var(--night);
  color: var(--flag-white);
}

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

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  margin-bottom: 42px;
  scroll-margin-top: 96px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--night);
}

.page-faq .faq-group__num {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--flag-blue);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--night);
}

.page-faq .faq-group__head .status {
  margin-left: auto;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 17px 4px;
  background: none;
  border: 0;
  font: inherit;
  text-align: left;
  color: var(--text-ink);
  cursor: pointer;
  transition: color 0.18s ease;
}

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

.page-faq .accordion__trigger:hover .faq-item__text {
  color: var(--flag-blue);
}

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

.page-faq .faq-item__q {
  flex: 0 0 auto;
  padding-top: 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--flag-blue);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.62;
  letter-spacing: -0.01em;
  transition: color 0.18s ease;
}

.page-faq .accordion__panel {
  padding: 2px 6px 20px 38px;
}

.page-faq .accordion__panel p {
  margin: 0 0 12px;
  font-size: 17px;
  line-height: 1.82;
  color: var(--text-soft);
}

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

.page-faq .accordion__panel ul {
  margin: 0 0 12px;
  padding-left: 20px;
  list-style: none;
}

.page-faq .accordion__panel li {
  position: relative;
  margin-bottom: 8px;
  font-size: 17px;
  line-height: 1.82;
  color: var(--text-soft);
}

.page-faq .accordion__panel li::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 12px;
  width: 6px;
  height: 6px;
  background: var(--flag-yellow);
  border-radius: 1px;
}

.page-faq .accordion__panel li:last-child {
  margin-bottom: 0;
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 4px;
}

.page-faq .faq-figure .media-frame {
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-faq .media-frame__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  padding: 12px 14px;
  background: var(--paper-2);
  border: 1px solid var(--faq-hair);
  border-left: 3px solid var(--glacier);
  border-radius: var(--radius);
}

.page-faq .faq-contact__label {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--slate);
}

.page-faq .faq-contact__value {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--night);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__value--text {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-faq .faq-contact__note {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--flag-yellow);
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 底部行动区 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 18px;
  padding: 26px 22px;
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--night) 0%, var(--ink) 100%);
  color: var(--flag-white);
  box-shadow: var(--shadow-2);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 58ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 900px) {
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 30px;
    padding: 30px 34px;
  }
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__item,
  .page-faq .faq-index__item::before,
  .page-faq .accordion__trigger,
  .page-faq .faq-item__text {
    transition: none;
  }
}
</main>