/* ===== 答疑中心 page-faq ===== */

.page-faq {
  --faq-index-w: 272px;
  --faq-gap: clamp(24px, 3.6vw, 56px);
  --faq-cut: 16px;
  background: var(--cold);
  color: var(--ink);
  font-family: var(--font-sans);
}

/* ---- 首屏 ---- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(26px, 3.6vw, 46px) 0 clamp(26px, 3.6vw, 42px);
  background:
    radial-gradient(120% 100% at 84% -14%, rgba(255, 201, 60, .22), transparent 56%),
    linear-gradient(158deg, var(--pitch-deep) 0%, #0d4b39 62%, var(--pitch-mid) 118%);
  color: var(--cold);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--flood) 20%, var(--neon) 54%, transparent 100%);
  opacity: .9;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: 6%;
  width: 48%;
  height: 160%;
  z-index: 0;
  pointer-events: none;
  background: repeating-linear-gradient(112deg, rgba(124, 255, 155, .10) 0 1px, transparent 1px 26px);
}

.page-faq .faq-hero .container,
.page-faq .faq-hero__fig {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb__list {
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

.page-faq .faq-hero .breadcrumb__item,
.page-faq .faq-hero .breadcrumb__link {
  color: rgba(244, 247, 245, .76);
}

.page-faq .faq-hero .breadcrumb__link:hover,
.page-faq .faq-hero .breadcrumb__link:focus-visible {
  color: var(--flood);
}

.page-faq .faq-hero__inner {
  max-width: 780px;
}

.page-faq .faq-hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--flood);
}

.page-faq .faq-hero .eyebrow::before {
  content: "";
  display: block;
  width: 26px;
  height: 2px;
  background: var(--flood);
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(29px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.012em;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(244, 247, 245, .82);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-hero__jump a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--cold);
  text-decoration: none;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(124, 255, 155, .34);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  background: rgba(255, 201, 60, .16);
  border-color: var(--flood);
  color: var(--flood);
}

.page-faq .faq-hero__fig {
  margin: clamp(26px, 3.6vw, 42px) auto 0;
  max-width: 1480px;
  padding: 0 clamp(16px, 4vw, 40px);
}

.page-faq .faq-hero__fig img {
  display: block;
  width: 100%;
  height: clamp(190px, 29vw, 420px);
  object-fit: cover;
  clip-path: polygon(0 var(--faq-cut), var(--faq-cut) 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

/* ---- 主体：左索引 + 右答案 ---- */

.page-faq .faq-body {
  padding: clamp(34px, 4.6vw, 72px) 0 clamp(44px, 6vw, 92px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 48px);
}

.page-faq .faq-index {
  background: var(--mist);
  padding: 20px 16px;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 44px;
  padding: 10px 12px;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  background: rgba(244, 247, 245, .62);
  border-left: 3px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: #fff;
  border-left-color: var(--flood);
  color: var(--pitch-deep);
  transform: translateX(2px);
}

.page-faq .faq-index__no {
  flex: none;
  padding: 2px 6px;
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--flood);
  background: var(--pitch-deep);
}

.page-faq .faq-answers {
  display: grid;
  gap: clamp(30px, 4vw, 54px);
  min-width: 0;
}

.page-faq .faq-entry {
  scroll-margin-top: calc(var(--header-h-small) + 26px);
}

.page-faq .faq-entry__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px clamp(16px, 2vw, 22px);
  color: var(--cold);
  background: linear-gradient(100deg, var(--pitch-deep) 0%, var(--pitch-mid) 100%);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  transition: box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-entry:target .faq-entry__head {
  background: linear-gradient(100deg, var(--pitch-mid) 0%, #1d7d5c 100%);
  box-shadow: inset 0 0 0 2px var(--flood);
}

.page-faq .faq-entry__no {
  flex: none;
  padding: 4px 8px;
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--pitch-deep);
  background: var(--flood);
}

.page-faq .faq-entry__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.005em;
}

.page-faq .faq-lead {
  margin: 18px 0 0;
  padding: 16px 18px;
  font-size: clamp(15.5px, 1.5vw, 17px);
  font-weight: 700;
  line-height: 1.72;
  color: var(--pitch-deep);
  background: linear-gradient(90deg, rgba(20, 98, 74, .16) 0%, rgba(124, 255, 155, .10) 56%, rgba(124, 255, 155, 0) 100%);
  border-left: 4px solid var(--pitch-mid);
}

.page-faq .faq-text {
  margin: 16px 0 0;
  max-width: 70ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-text a {
  color: var(--pitch-mid);
  text-decoration: underline;
  text-decoration-color: rgba(20, 98, 74, .38);
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease), text-decoration-color var(--dur) var(--ease);
}

.page-faq .faq-text a:hover,
.page-faq .faq-text a:focus-visible {
  color: var(--pitch-deep);
  text-decoration-color: var(--flood);
}

.page-faq .faq-note {
  margin: 16px 0 0;
  max-width: 70ch;
  padding: 12px 0 12px 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
  border-left: 2px dashed rgba(110, 132, 120, .45);
}

/* ---- 字段说明表 ---- */

.page-faq .field-list {
  margin: 20px 0 0;
  max-width: 74ch;
  display: grid;
  gap: 2px;
}

.page-faq .field-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 14px;
  background: #fff;
  border-left: 3px solid var(--pitch-mid);
}

.page-faq .field-row:nth-child(even) {
  background: var(--mist);
}

.page-faq .field-row__key {
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--pitch-deep);
}

.page-faq .field-row__val {
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

/* ---- 插图 ---- */

.page-faq .faq-fig {
  margin: clamp(22px, 3vw, 30px) 0 0;
  max-width: 74ch;
}

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 560;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-faq .faq-fig__cap {
  margin-top: 10px;
  padding-left: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  border-left: 2px solid var(--flood);
}

/* ---- 折叠细节 ---- */

.page-faq .faq-detail {
  margin: 20px 0 0;
  max-width: 74ch;
  background: #fff;
  border: 1px solid rgba(20, 98, 74, .22);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.page-faq .faq-detail__toggle {
  display: flex;
  width: 100%;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  text-align: left;
  color: var(--pitch-deep);
  background: var(--mist);
  border: 0;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-detail__toggle:hover {
  background: #cfe3d7;
}

.page-faq .faq-detail__toggle[aria-expanded="true"] {
  color: var(--cold);
  background: var(--pitch-deep);
}

.page-faq .faq-detail__sign {
  flex: none;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  font-family: var(--font-num);
  font-size: 16px;
  line-height: 1;
  color: var(--pitch-deep);
  background: var(--flood);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-detail__toggle[aria-expanded="true"] .faq-detail__sign {
  transform: rotate(45deg);
}

.page-faq .faq-detail__panel {
  padding: 14px 16px 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .faq-detail__panel[hidden] {
  display: none;
}

.page-faq .faq-detail__panel p {
  margin: 0;
}

/* ---- 收束区 ---- */

.page-faq .faq-cta {
  padding: clamp(38px, 5vw, 68px) 0;
  color: var(--cold);
  background:
    radial-gradient(90% 130% at 12% 0%, rgba(255, 201, 60, .16), transparent 58%),
    linear-gradient(150deg, var(--stand) 0%, var(--pitch-deep) 100%);
}

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

.page-faq .faq-cta h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -.01em;
}

.page-faq .faq-cta p {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 247, 245, .8);
}

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

.page-faq .faq-cta .btn--ghost {
  color: var(--cold);
  border-color: rgba(244, 247, 245, .42);
}

.page-faq .faq-cta .btn--ghost:hover,
.page-faq .faq-cta .btn--ghost:focus-visible {
  color: var(--flood);
  border-color: var(--flood);
}

/* ---- 响应式 ---- */

@media (min-width: 620px) {
  .page-faq .field-row {
    grid-template-columns: minmax(104px, 140px) minmax(0, 1fr);
    gap: 0 18px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h-small) + 22px);
    max-height: calc(100vh - var(--header-h-small) - 48px);
    overflow-y: auto;
  }
}

@media (min-width: 800px) {
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) auto;
    align-items: center;
    gap: 40px;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero__jump {
    gap: 8px;
  }

  .page-faq .faq-hero__jump a {
    padding: 7px 12px;
    font-size: 13px;
  }

  .page-faq .faq-entry__title {
    font-size: 17.5px;
  }

  .page-faq .faq-cta__actions .btn {
    flex: 1 1 auto;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq a,
  .page-faq button {
    transition-duration: .01ms !important;
  }
}