.page-faq {
  --faq-panel: var(--navy-2);
  --faq-panel-2: var(--navy-3);
  --faq-gap: 18px;
  display: block;
  background: var(--navy);
  color: var(--ice);
  overflow-x: clip;
}

.page-faq .shell {
  position: relative;
}

/* ---------- 首屏 ---------- */

.page-faq__hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(18px, 4vw, 32px) clamp(44px, 8vw, 88px);
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(118% 88% at 92% 0%, rgba(31, 224, 208, .20), transparent 62%),
    radial-gradient(80% 70% at 6% 100%, rgba(107, 77, 255, .18), transparent 70%),
    linear-gradient(180deg, var(--navy-deep), var(--navy));
  clip-path: polygon(0 0, 100% 0, 100% 74%, 0 100%);
}

.page-faq__hero-grid {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  align-items: center;
}

.page-faq .display {
  margin: 12px 0 18px;
  font-size: clamp(28px, 6.6vw, 54px);
  line-height: 1.1;
  letter-spacing: -.02em;
  max-width: 17ch;
}

.page-faq__hero-copy .lede {
  max-width: 54ch;
  color: var(--slate);
}

.page-faq__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq__hero-figure {
  margin: 0;
}

.page-faq__hero-figure .figure__frame {
  aspect-ratio: 3 / 2;
}

.page-faq__hero-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 三步上手 ---------- */

.page-faq__start {
  position: relative;
  padding-block: clamp(34px, 7vw, 72px);
  border-top: 1px solid var(--line);
}

.page-faq__head {
  max-width: 720px;
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-faq__head .eyebrow {
  color: var(--cyan);
}

.page-faq__head .h2 {
  margin: 10px 0 12px;
}

.page-faq__head .prose {
  color: var(--slate);
}

.page-faq__steps {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq__step {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--faq-panel-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  box-shadow: var(--shadow-hard);
}

.page-faq__step-num {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-faq__step-title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ice);
}

.page-faq__step-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate);
}

/* ---------- 问答区 ---------- */

.page-faq__answers {
  padding-block: clamp(38px, 7vw, 78px);
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-3) 38%, var(--navy) 100%);
}

.page-faq__search {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(26px, 4vw, 44px);
  padding: 18px 20px;
  background: var(--faq-panel);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--orange);
  box-shadow: var(--shadow-hard);
}

.page-faq__search-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq__search-input {
  width: 100%;
  min-height: 46px;
  padding: 12px 14px;
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ice);
  font-family: var(--font-body);
  font-size: 15px;
  transition: border-color var(--dur) var(--ease);
}

.page-faq__search-input::placeholder {
  color: var(--slate);
}

.page-faq__search-input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-color: var(--cyan);
}

.page-faq__grid {
  display: grid;
  gap: clamp(22px, 3.5vw, 34px);
}

.page-faq__group {
  padding: clamp(20px, 3vw, 30px);
  background: var(--faq-panel-2);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
}

.page-faq__group:nth-child(2) {
  border-top-color: var(--violet);
}

.page-faq__group:nth-child(3) {
  border-top-color: var(--orange);
}

.page-faq__group:nth-child(4) {
  border-top-color: var(--lime);
}

.page-faq__group-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px dashed var(--line-strong);
}

.page-faq__group-idx {
  flex: 0 0 auto;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--cyan);
  border: 1px solid var(--line-strong);
}

.page-faq__group-head .h3 {
  margin: 0;
}

.page-faq__cols {
  display: grid;
  gap: 18px;
}

.page-faq__col-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq__item {
  margin-bottom: 10px;
  background: var(--navy-deep);
  border: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq__item:last-child {
  margin-bottom: 0;
}

.page-faq__item[open] {
  border-left-color: var(--cyan);
  background: var(--navy-2);
}

.page-faq__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  min-height: 46px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ice);
}

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

.page-faq__q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.15;
  color: var(--cyan);
  transition: color var(--dur) var(--ease);
}

.page-faq__item[open] .page-faq__q::after {
  content: "−";
  color: var(--orange);
}

.page-faq__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq__a {
  padding: 12px 16px 16px;
  border-top: 1px dashed var(--line);
}

.page-faq__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--slate);
}

.page-faq__group-figure {
  margin: 16px 0 0;
}

.page-faq__group-figure .figure__frame {
  aspect-ratio: 5 / 6;
}

.page-faq__group-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 收尾色带 ---------- */

.page-faq__cta {
  position: relative;
  margin-top: clamp(30px, 6vw, 58px);
  padding-block: clamp(38px, 6vw, 64px);
  background: linear-gradient(112deg, var(--orange) 0%, #ff4d2a 48%, var(--red) 100%);
  color: #14060b;
  clip-path: polygon(0 7%, 100% 0, 100% 100%, 0 93%);
}

.page-faq__cta-inner {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-faq__cta .eyebrow {
  color: rgba(20, 6, 11, .66);
}

.page-faq__cta .h2 {
  margin: 8px 0 12px;
  color: #14060b;
}

.page-faq__cta-text {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.72;
  color: rgba(20, 6, 11, .82);
}

.page-faq__cta-note {
  margin: 14px 0 0;
  font-size: 13.5px;
  color: rgba(20, 6, 11, .7);
}

.page-faq__cta-note a {
  color: #14060b;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq__cta-note a:focus-visible {
  outline: 2px solid #14060b;
  outline-offset: 2px;
}

.page-faq__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq__search {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
  }
}

@media (min-width: 760px) {
  .page-faq__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }

  .page-faq__group--mobile .page-faq__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr)) minmax(0, .8fr);
    align-items: start;
  }

  .page-faq__group-figure {
    margin-top: 0;
  }
}

@media (min-width: 900px) {
  .page-faq__hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-faq__cta-inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }

  .page-faq__cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-faq__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-faq__step {
    margin-right: 18px;
  }

  .page-faq__step:last-child {
    margin-right: 0;
  }

  .page-faq__step::after {
    content: "";
    position: absolute;
    top: 46px;
    right: -18px;
    width: 18px;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--orange));
  }

  .page-faq__step:last-child::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}