.page-faq {
  --faq-line: 1px solid rgba(18, 56, 74, 0.9);
  --faq-grid: rgba(18, 56, 74, 0.55);
  color: var(--white);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  overflow-x: hidden;
}

.page-faq * {
  overflow-wrap: break-word;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.2rem, 6vw, 4.2rem) 0 clamp(1.8rem, 4vw, 2.8rem);
  border-bottom: var(--faq-line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(57, 242, 192, 0.13), transparent 62%),
    linear-gradient(180deg, var(--ink-2), var(--ink));
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, var(--faq-grid) 1px, transparent 1px),
    linear-gradient(0deg, var(--faq-grid) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: linear-gradient(160deg, rgba(0, 0, 0, 0.85), transparent 72%);
  mask-image: linear-gradient(160deg, rgba(0, 0, 0, 0.85), transparent 72%);
  pointer-events: none;
}

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

.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--mint);
  border: 1px solid rgba(57, 242, 192, 0.32);
  padding: 0.35rem 0.7rem;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6.6vw, 4.1rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0.85rem 0 1rem;
  max-width: 20ch;
}

.page-faq .faq-hero h1 .hl {
  color: var(--mint);
  box-shadow: inset 0 -0.16em 0 rgba(57, 242, 192, 0.22);
}

.page-faq .faq-hero__lead {
  max-width: 46ch;
  margin: 0;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.8;
}

/* 入口叠卡 */
.page-faq .faq-gates {
  display: grid;
  gap: 0.9rem;
  margin-top: clamp(1.5rem, 4vw, 2.4rem);
}

.page-faq .faq-gate {
  position: relative;
  display: block;
  padding: 1.1rem 1.15rem 1.25rem;
  background: linear-gradient(160deg, var(--ink-2), rgba(11, 30, 48, 0.65));
  border: 1px solid rgba(57, 242, 192, 0.22);
  border-left: 2px solid var(--mint);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-gate:hover,
.page-faq .faq-gate:focus-visible {
  transform: translateY(-4px);
  border-color: var(--orange);
  background: linear-gradient(160deg, var(--tactical), rgba(11, 30, 48, 0.85));
}

.page-faq .faq-gate__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-faq .faq-gate__title {
  display: block;
  margin: 0.35rem 0 0.3rem;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-gate__desc {
  display: block;
  color: var(--mist);
  font-size: 0.875rem;
  line-height: 1.65;
}

/* 仪表带 */
.page-faq .faq-meter {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(1.7rem, 4vw, 2.6rem) 0 0;
  padding: 0;
  background: rgba(18, 56, 74, 0.9);
  border: 1px solid rgba(18, 56, 74, 0.9);
}

.page-faq .faq-meter__item {
  background: var(--ink);
  padding: 0.8rem 0.9rem;
}

.page-faq .faq-meter__label {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--mist);
  line-height: 1.5;
}

.page-faq .faq-meter__num {
  margin: 0.25rem 0 0;
  font-family: var(--font-mono);
  font-size: 1.375rem;
  color: var(--mint);
  line-height: 1.2;
}

/* ---------- 任务线标签 ---------- */
.page-faq .faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1.1rem 0;
  border-bottom: var(--faq-line);
}

.page-faq .faq-tab {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--tactical);
  color: var(--mist);
  text-decoration: none;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.4rem);
  padding-top: clamp(1.7rem, 4vw, 2.6rem);
}

.page-faq .faq-index {
  border-top: 1px solid var(--mint);
  padding-top: 0.9rem;
}

.page-faq .faq-index__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
}

.page-faq .faq-index__link {
  display: flex;
  gap: 0.6rem;
  padding: 0.55rem 0.15rem;
  font-size: 0.9375rem;
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid rgba(18, 56, 74, 0.6);
  transition: color 0.18s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--mint);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--mint);
  padding-top: 0.15rem;
}

.page-faq .faq-index__card {
  margin-top: 1.3rem;
  padding: 0.9rem 1rem;
  background: var(--ink-2);
  border-left: 2px solid var(--orange);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-index__card a {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(2.2rem, 5vw, 3.4rem);
  scroll-margin-top: 6.5rem;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding-bottom: 0.7rem;
  border-bottom: var(--faq-line);
  margin-bottom: 1rem;
}

.page-faq .faq-group__kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--mint);
  flex: none;
}

.page-faq .faq-group h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-faq .faq-group__lead {
  margin: 0 0 1.2rem;
  max-width: 60ch;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 1.3rem;
}

.page-faq .faq-figure .media-frame {
  width: 100%;
  aspect-ratio: 1000 / 700;
  background: var(--ink-2);
  border: 1px solid rgba(18, 56, 74, 0.9);
  overflow: hidden;
}

.page-faq .faq-figure--wide .media-frame {
  aspect-ratio: 900 / 600;
}

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

.page-faq .faq-figure .media-caption {
  margin-top: 0.55rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 0.65rem;
}

.page-faq .qa {
  position: relative;
  background: var(--ink-2);
  border: 1px solid rgba(18, 56, 74, 0.9);
  border-left: 2px solid var(--tactical);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .qa[open] {
  border-left-color: var(--mint);
  background: linear-gradient(180deg, rgba(18, 56, 74, 0.92), var(--ink-2));
}

.page-faq .qa:target {
  border-left-color: var(--orange);
}

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.9rem 3.2rem 0.9rem 0.9rem;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
}

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

.page-faq .qa__summary::marker {
  content: "";
}

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

.page-faq .qa__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--mint);
  padding-top: 0.3rem;
}

.page-faq .qa__sign {
  position: absolute;
  right: 0.95rem;
  top: 1.05rem;
  width: 14px;
  height: 14px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--mist);
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-faq .qa__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
}

.page-faq .qa[open] .qa__sign::before {
  background: var(--orange);
}

.page-faq .qa__anchor {
  position: absolute;
  right: 2.35rem;
  top: 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--mute);
  text-decoration: none;
  padding: 0 0.2rem;
}

.page-faq .qa__anchor:hover,
.page-faq .qa__anchor:focus-visible {
  color: var(--orange);
}

.page-faq .qa__body {
  padding: 0 1rem 1.05rem 1.9rem;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .qa__body p {
  margin: 0 0 0.6rem;
}

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

.page-faq .qa__body strong {
  color: var(--white);
  font-weight: 600;
}

/* ---------- 联系准备 ---------- */
.page-faq .faq-prep {
  border-top: 1px solid var(--mint);
  padding-top: 1.1rem;
}

.page-faq .faq-prep__list {
  list-style: none;
  margin: 0 0 1.3rem;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-prep__item {
  display: grid;
  grid-template-columns: 1.7rem minmax(0, 1fr);
  gap: 0.7rem;
  padding: 0.85rem 0.95rem;
  background: var(--ink-2);
  border-left: 1px solid var(--tactical);
}

.page-faq .faq-prep__idx {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--lime);
  padding-top: 0.1rem;
}

.page-faq .faq-prep__text {
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-faq .faq-prep__text b {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--white);
  font-size: 0.9688rem;
  font-weight: 700;
}

/* CTA */
.page-faq .faq-cta {
  padding: clamp(1.15rem, 3.5vw, 1.75rem);
  background: linear-gradient(140deg, rgba(255, 138, 61, 0.16), rgba(11, 30, 48, 0.92) 58%);
  border: 1px solid rgba(255, 138, 61, 0.42);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .faq-cta__title {
  margin: 0 0 0.45rem;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-cta__text {
  margin: 0 0 1rem;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .faq-cta__text a {
  color: var(--white);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-underline-offset: 3px;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-faq .faq-more {
  margin: 1.2rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-more a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-gates {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-faq .faq-meter {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero h1 {
    max-width: 24ch;
  }

  .page-faq .faq-figure .media-frame {
    aspect-ratio: 1000 / 560;
  }

  .page-faq .faq-figure--wide .media-frame {
    aspect-ratio: 900 / 480;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-faq .faq-index__wrap {
    position: sticky;
    top: 6.2rem;
  }

  .page-faq .faq-gates {
    grid-template-columns: repeat(2, minmax(0, 320px));
  }

  .page-faq .faq-gate--offset {
    margin-top: 1.6rem;
  }

  .page-faq .faq-group__lead {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-gate,
  .page-faq .faq-tab,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after {
    transition: none;
  }

  .page-faq .faq-gate:hover,
  .page-faq .faq-gate:focus-visible {
    transform: none;
  }
}