.page-faq {
  --faq-paper-line: rgba(29, 42, 51, 0.14);
  --faq-paper-text: #33454F;
  --faq-teal-deep: #0B6E66;
  background: var(--ink-900);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3vw, 38px) 0 clamp(36px, 5vw, 72px);
  background:
    radial-gradient(900px 420px at 88% -12%, rgba(25, 195, 177, 0.22), transparent 64%),
    radial-gradient(620px 360px at 6% 112%, rgba(255, 90, 54, 0.14), transparent 68%),
    linear-gradient(166deg, #0A2237 0%, var(--ink-900) 64%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--teal), var(--ember), transparent);
  opacity: 0.55;
}

.page-faq .faq-hero__grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(112deg, rgba(127, 227, 214, 0.06) 0 1px, transparent 1px 34px);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 80%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 80%);
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero .display {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(36px, 7.4vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.015em;
  color: #EAF7F5;
  margin: 12px 0 0;
}

.page-faq .faq-hero .lede {
  max-width: 46ch;
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(216, 230, 228, 0.8);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

.page-faq .faq-hero__quick .btn {
  font-size: 14px;
  padding: 12px 20px;
}

.page-faq .faq-hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__fact-num {
  font-size: 22px;
  font-weight: 600;
  color: var(--glow);
  line-height: 1;
}

.page-faq .faq-hero__fact-key {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .faq-hero__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line-strong);
  background: var(--ink-800);
}

.page-faq .faq-hero__figure::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 44px;
  height: 44px;
  border-top: 2px solid var(--ember);
  border-left: 2px solid var(--ember);
  pointer-events: none;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 8;
  object-fit: cover;
}

.page-faq .faq-hero__figure figcaption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-path {
  position: relative;
  padding: clamp(38px, 5vw, 74px) 0 clamp(44px, 6vw, 88px);
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
}

.page-faq .faq-path .section-head__index {
  color: var(--teal);
}

.page-faq .faq-path .section-head__lead {
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(216, 230, 228, 0.72);
}

.page-faq .faq-path__track {
  position: relative;
  margin-top: clamp(26px, 4vw, 46px);
}

.page-faq .faq-path__line {
  display: none;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  position: relative;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 8px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(180deg, var(--teal), var(--ember));
  opacity: 0.55;
}

.page-faq .faq-step {
  position: relative;
  padding: 0 0 30px 44px;
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--ink-900);
  border: 2px solid var(--teal);
  transform: rotate(45deg);
}

.page-faq .faq-step:last-child::before {
  border-color: var(--ember);
}

.page-faq .faq-step__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--teal-soft);
}

.page-faq .faq-step__title {
  margin: 8px 0 8px;
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #EAF7F5;
}

.page-faq .faq-step__text {
  margin: 0;
  max-width: 38ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(216, 230, 228, 0.7);
}

.page-faq .faq-step__more {
  display: inline-block;
  margin-top: 12px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--glow);
  text-decoration: none;
  border-bottom: 1px solid rgba(92, 242, 230, 0.4);
  padding-bottom: 2px;
}

.page-faq .faq-step__more:hover,
.page-faq .faq-step__more:focus-visible {
  color: #ffffff;
  border-bottom-color: var(--ember);
}

/* ---------- 问答区 ---------- */
.page-faq .faq-qa {
  background: var(--paper);
  color: var(--faq-paper-text);
  padding: clamp(42px, 6vw, 84px) 0 clamp(46px, 7vw, 96px);
}

.page-faq .faq-qa__inner {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  align-items: start;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: #7B909B;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__list a {
  display: block;
  white-space: nowrap;
  font-size: 12.5px;
  line-height: 1.5;
  padding: 8px 12px;
  border: 1px solid rgba(29, 42, 51, 0.18);
  color: #33454F;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-color: var(--teal);
  color: var(--faq-teal-deep);
  background: rgba(25, 195, 177, 0.08);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 4vw, 50px);
}

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

.page-faq .faq-group__num {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: #0F9C8F;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--graphite);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-paper-line);
  transition: background-color 0.2s ease;
}

.page-faq .faq-item[open] {
  background: rgba(25, 195, 177, 0.055);
}

.page-faq .faq-item__q {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 4px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: #23343D;
  transition: color 0.2s ease;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--f-mono);
  font-size: 18px;
  line-height: 1;
  color: #0F9C8F;
  transform: translateY(3px);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--faq-teal-deep);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
}

.page-faq .faq-item__q:hover {
  color: var(--faq-teal-deep);
}

.page-faq .faq-item__a {
  padding: 0 4px 18px;
  max-width: 74ch;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  font-size: 14.8px;
  line-height: 1.85;
  color: #3B4E58;
}

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

.page-faq .faq-item__a a {
  color: var(--faq-teal-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-figure {
  margin: 20px 0 0;
  border: 1px solid var(--faq-paper-line);
  background: #ffffff;
}

.page-faq .faq-figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: #5C7079;
  border-top: 1px solid var(--faq-paper-line);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-help {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 6vw, 88px) 0 clamp(48px, 7vw, 92px);
  background: linear-gradient(155deg, #0D2B41 0%, var(--ink-900) 76%);
}

.page-faq .faq-help__glow {
  position: absolute;
  right: -12%;
  top: -32%;
  width: 62%;
  height: 160%;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, rgba(255, 90, 54, 0.18), transparent 66%);
}

.page-faq .faq-help__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-help__title {
  margin: 12px 0 0;
  font-size: clamp(24px, 3.6vw, 42px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: #EAF7F5;
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 44ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(216, 230, 228, 0.76);
}

.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 3vw, 30px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  background: var(--ink-800);
}

.page-faq .faq-contact__key {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-faq .faq-contact__val {
  font-family: var(--f-mono);
  font-size: 14.5px;
  line-height: 1.6;
  color: #EAF7F5;
  word-break: break-word;
}

.page-faq .faq-help__btn {
  margin-top: 22px;
  font-size: 14px;
  padding: 12px 22px;
}

.page-faq .faq-help__list {
  border: 1px solid var(--line-strong);
  padding: clamp(18px, 2.6vw, 26px);
  background: rgba(7, 26, 43, 0.5);
}

.page-faq .faq-help__list-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--teal-soft);
}

.page-faq .faq-check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}

.page-faq .faq-check:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-check__box {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  position: relative;
  width: 16px;
  height: 16px;
  margin: 2px 0 0;
  border: 1px solid var(--line-strong);
  background: transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-check__box:checked {
  background: var(--teal);
  border-color: var(--teal);
}

.page-faq .faq-check__box:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border-right: 2px solid #062A2A;
  border-bottom: 2px solid #062A2A;
  transform: rotate(40deg);
}

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

.page-faq .faq-check__text {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(216, 230, 228, 0.86);
}

.page-faq .faq-check__box:checked + .faq-check__text {
  color: rgba(216, 230, 228, 0.55);
}

.page-faq .faq-help__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 平板起适配 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__facts {
    gap: 16px 36px;
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: end;
  }

  .page-faq .faq-hero__figure {
    transform: skewX(-4deg);
  }

  .page-faq .faq-hero__figure img,
  .page-faq .faq-hero__figure figcaption {
    transform: skewX(4deg);
  }

  .page-faq .faq-path__track {
    padding-top: 34px;
  }

  .page-faq .faq-path__line {
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    width: 100%;
    height: 14px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(18px, 2.6vw, 40px);
  }

  .page-faq .faq-steps::before {
    display: none;
  }

  .page-faq .faq-step {
    padding: 0;
  }

  .page-faq .faq-step::before {
    left: 0;
    top: 0;
  }

  .page-faq .faq-step__num {
    padding-left: 24px;
  }

  .page-faq .faq-step__title {
    margin-top: 14px;
  }

  .page-faq .faq-step__text {
    max-width: none;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-qa__inner {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(32px, 4.6vw, 60px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__list a {
    white-space: normal;
    border: 0;
    border-left: 2px solid rgba(29, 42, 51, 0.16);
    padding: 10px 0 10px 14px;
    font-size: 14px;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    border-left-color: var(--teal);
  }

  .page-faq .faq-item__q {
    padding: 18px 8px;
  }

  .page-faq .faq-item__a {
    padding: 0 8px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step__more,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-index__list a,
  .page-faq .faq-check__box {
    transition: none;
  }
}