.page-faq {
  background: var(--deep);
  color: var(--paper);
  padding-block: clamp(20px, 3vw, 36px) clamp(48px, 8vw, 110px);
}

.page-faq .breadcrumb {
  padding-bottom: clamp(16px, 2.4vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 54px) 0 clamp(28px, 5vw, 58px);
  border-bottom: var(--border);
  background-image:
    radial-gradient(120% 140% at 88% 0%, rgba(53, 240, 208, 0.13), transparent 58%),
    radial-gradient(80% 120% at 100% 100%, rgba(192, 112, 75, 0.12), transparent 62%);
}

.page-faq .faq-hero__spark {
  display: none;
  position: absolute;
  right: 0;
  bottom: 22px;
  width: min(42%, 280px);
  height: 64px;
  color: rgba(53, 240, 208, 0.42);
  pointer-events: none;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(28px, 5.2vw, 60px);
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lead {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--rock);
  border: var(--border);
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 20px;
  background: var(--panel);
}

.page-faq .faq-hero__num {
  font-family: var(--font-num);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-hero__facts li:last-child .faq-hero__num {
  color: var(--orange);
}

.page-faq .faq-hero__label {
  font-size: 13.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 主体分屏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(30px, 5vw, 62px);
}

.page-faq .faq-index {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-right: clamp(0px, 2vw, 26px);
}

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 16px;
  border: var(--border);
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--paper);
  text-decoration: none;
  transition: border-color 0.22s var(--ease), background-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-faq .faq-index__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--moss);
  transition: background-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan);
  background: rgba(53, 240, 208, 0.06);
}

.page-faq .faq-index__link:hover .faq-index__dot,
.page-faq .faq-index__link:focus-visible .faq-index__dot {
  background: var(--orange);
  transform: scale(1.25);
}

.page-faq .faq-index__tip {
  margin: 4px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-index__tip a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 43, 0.4);
}

.page-faq .faq-index__tip a:hover {
  border-bottom-color: var(--orange);
}

/* ---------- 问答分区 ---------- */
.page-faq .faq-sec {
  padding: clamp(26px, 4vw, 48px) 0;
  border-top: var(--border);
}

.page-faq .faq-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}

.page-faq .faq-sec__num {
  margin: 0;
  flex: none;
  font-family: var(--font-num);
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1;
  color: var(--clay);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(21px, 3vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.005em;
}

.page-faq .faq-sec__intro {
  margin: 0 0 clamp(18px, 2.6vw, 28px);
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border: var(--border);
  background: linear-gradient(180deg, rgba(14, 33, 54, 0.9), rgba(8, 19, 31, 0.62));
  margin-bottom: 10px;
  transition: border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-faq .qa:last-of-type {
  margin-bottom: 0;
}

.page-faq .qa[open] {
  border-color: var(--cyan);
  box-shadow: inset 3px 0 0 var(--clay);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-height: 44px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-num);
  font-size: 20px;
  line-height: 1;
  color: var(--mist);
  transition: color 0.22s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
  color: var(--cyan);
}

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

.page-faq .qa__num {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .qa__text {
  font-size: clamp(15px, 1.55vw, 17px);
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .qa__a {
  max-width: 74ch;
  padding: 0 20px 20px;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

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

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 208, 0.35);
}

.page-faq .qa__a a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 三步流程 ---------- */
.page-faq .faq-steps {
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  counter-reset: none;
}

.page-faq .faq-steps__item {
  position: relative;
  padding-left: 0;
}

.page-faq .faq-steps__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 12px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  background: var(--deep);
  font-family: var(--font-num);
  font-size: 16px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-steps__t {
  margin: 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 对照表 ---------- */
.page-faq .faq-pairs {
  border: var(--border);
  background: var(--panel);
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-pairs__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 15px 18px;
  border-top: var(--border);
}

.page-faq .faq-pairs__row:first-child {
  border-top: 0;
}

.page-faq .faq-pairs__k {
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .faq-pairs__v {
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 指标带 ---------- */
.page-faq .faq-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin: 0 0 clamp(20px, 3vw, 32px);
  padding: 0;
  list-style: none;
  background: var(--rock);
  border: var(--border);
}

.page-faq .faq-metrics__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 20px;
  background: var(--panel);
}

.page-faq .faq-metrics__n {
  font-family: var(--font-num);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1;
  color: var(--paper);
}

.page-faq .faq-metrics__item:nth-child(1) .faq-metrics__n,
.page-faq .faq-metrics__item:nth-child(3) .faq-metrics__n {
  color: var(--cyan);
}

.page-faq .faq-metrics__item:nth-child(2) .faq-metrics__n {
  color: var(--orange);
}

.page-faq .faq-metrics__l {
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 图组 ---------- */
.page-faq .faq-figure {
  margin: clamp(22px, 3.5vw, 38px) 0 0;
  border: var(--border);
  background: var(--panel);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 13px 18px;
  border-top: var(--border);
  font-size: 13px;
  line-height: 1.75;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 合作区 ---------- */
.page-faq .faq-coop {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--rock);
  border: var(--border);
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-coop__col {
  background: var(--panel);
  padding: 20px 20px 22px;
}

.page-faq .faq-coop__h {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-faq .faq-coop__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-coop__list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

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

.page-faq .faq-coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--moss);
}

.page-faq .faq-coop__note {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-coop__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 208, 0.35);
}

.page-faq .faq-coop__note a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 22px;
  border: 1px solid rgba(255, 138, 43, 0.4);
  background:
    linear-gradient(120deg, rgba(255, 138, 43, 0.1), rgba(53, 240, 208, 0.06) 70%, transparent);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
  }

  .page-faq .faq-steps__item {
    padding-right: 26px;
  }

  .page-faq .faq-steps__item::after {
    content: "";
    position: absolute;
    top: 17px;
    left: 42px;
    right: 6px;
    height: 1px;
    background: var(--rock);
  }

  .page-faq .faq-steps__item:last-child {
    padding-right: 0;
  }

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

  .page-faq .faq-pairs__row {
    grid-template-columns: 150px 1fr;
    gap: 22px;
    align-items: baseline;
    padding: 16px 22px;
  }

  .page-faq .faq-coop {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .qa__a {
    padding-left: 50px;
    padding-right: 26px;
  }
}

@media (min-width: 901px) {
  .page-faq .faq-hero__spark {
    display: block;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 6px;
  }

  .page-faq .faq-index__link {
    justify-content: flex-start;
    border-color: transparent;
    border-left: 1px solid var(--rock);
    border-radius: 999px;
    padding-left: 14px;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-color: var(--cyan);
    border-left-color: var(--orange);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q::after,
  .page-faq .faq-index__link,
  .page-faq .faq-index__dot {
    transition: none;
  }
}