.page-faq {
  background: var(--ink-900);
  color: var(--text-1);
  overflow-x: hidden;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  padding: 22px 0 0;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: .6;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 80%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 80%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -150px;
  right: -130px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 106, 26, .16), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 4px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 34px;
  padding: 18px 0 40px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 7.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -.02em;
  margin: 14px 0 18px;
  max-width: 16em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-2);
  max-width: 38em;
}

.page-faq .faq-hero__note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-3);
  max-width: 34em;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__panel {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--line);
  padding: 24px 22px 26px;
}

.page-faq .faq-hero__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--orange-soft) 55%, transparent);
}

.page-faq .faq-hero__panel .t-label {
  color: var(--text-3);
}

.page-faq .faq-panel__num {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(38px, 9vw, 56px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--orange);
  margin: 12px 0 4px;
}

.page-faq .faq-panel__cap {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-3);
}

.page-faq .faq-panel__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 12px;
}

.page-faq .faq-panel__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-2);
}

.page-faq .faq-panel__list .dot {
  margin-top: 8px;
}

/* ============ 现象分类 ============ */
.page-faq .faq-finder {
  padding: clamp(44px, 6vw, 78px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-finder__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-3);
  max-width: 22em;
}

.page-faq .faq-finder__grid {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.page-faq .faq-finder__card {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 22px 20px 24px 26px;
  background: var(--ink-850);
  border: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  transition: background-color .2s var(--ease-out);
}

.page-faq .faq-finder__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--orange);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform .2s var(--ease-out);
}

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

.page-faq .faq-finder__card:focus-visible::before {
  transform: scaleY(1);
}

.page-faq .faq-finder__num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-faq .faq-finder__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--text-1);
}

.page-faq .faq-finder__text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
}

.page-faq .faq-finder__go {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange-soft);
}

@media (hover: hover) {
  .page-faq .faq-finder__card:hover {
    background: var(--ink-800);
  }
  .page-faq .faq-finder__card:hover::before {
    transform: scaleY(1);
  }
}

/* ============ 三步路径 ============ */
.page-faq .faq-path {
  padding: clamp(44px, 6vw, 78px) 0;
  background: var(--ink-850);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-path__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-3);
}

.page-faq .faq-track {
  display: block;
  width: 100%;
  height: auto;
  margin: 26px 0 34px;
}

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

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  bottom: 34px;
  width: 1px;
  background: linear-gradient(180deg, var(--orange), var(--line) 85%);
}

.page-faq .faq-steps li {
  position: relative;
  padding: 0 0 30px 30px;
}

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

.page-faq .faq-steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 9px;
  height: 9px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--ink-850);
  border: 2px solid var(--orange);
}

.page-faq .faq-steps__num {
  display: block;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-steps__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--text-1);
  margin: 6px 0 8px;
}

.page-faq .faq-steps__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-2);
  max-width: 34em;
}

.page-faq .faq-path__figure {
  margin: 38px 0 0;
}

/* ============ 解答区块 ============ */
.page-faq .faq-answer {
  padding: clamp(44px, 6vw, 78px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-answer--alt {
  background: var(--ink-850);
}

.page-faq .faq-answer__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-answer__side h2 {
  margin: 12px 0 0;
  max-width: 14em;
}

.page-faq .faq-answer__note {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-2);
  max-width: 30em;
}

.page-faq .faq-answer__body {
  min-width: 0;
}

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

.page-faq .faq-checks li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 18px 18px 16px;
  background: var(--ink-850);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  transition: border-left-color .2s var(--ease-out), background-color .2s var(--ease-out);
}

.page-faq .faq-answer--alt .faq-checks li {
  background: var(--ink-800);
}

.page-faq .faq-checks__i {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  line-height: 1.8;
  color: var(--orange);
}

.page-faq .faq-checks--timeline .faq-checks__i {
  font-size: 12px;
  letter-spacing: .06em;
}

.page-faq .faq-checks__h {
  display: block;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-1);
  margin-bottom: 5px;
}

.page-faq .faq-checks__p {
  display: block;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-2);
}

@media (hover: hover) {
  .page-faq .faq-checks li:hover {
    border-left-color: var(--orange);
  }
}

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

.page-faq .faq-points li {
  padding: 18px 20px;
  background: var(--ink-850);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  transition: border-left-color .2s var(--ease-out);
}

.page-faq .faq-points__h {
  display: block;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-1);
  margin-bottom: 5px;
}

.page-faq .faq-points__p {
  display: block;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-2);
}

@media (hover: hover) {
  .page-faq .faq-points li:hover {
    border-left-color: var(--orange);
  }
}

.page-faq .faq-device__figure {
  margin: 26px 0 0;
}

/* ============ 延伸链接 ============ */
.page-faq .faq-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 28px 0 0;
}

.page-faq .faq-links a {
  font-size: 14px;
  color: var(--orange-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 160, 92, .4);
  padding-bottom: 2px;
  transition: color .18s var(--ease-out), border-color .18s var(--ease-out);
}

.page-faq .faq-links a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

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

/* ============ 提交材料（纸白区） ============ */
.page-faq .faq-submit {
  position: relative;
  background: var(--paper);
  color: var(--ink-text);
  padding: clamp(46px, 7vw, 88px) 0;
  overflow: hidden;
}

.page-faq .faq-submit::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(16, 19, 26, .07) 1px, transparent 1px);
  background-size: 100% 34px;
  pointer-events: none;
}

.page-faq .faq-submit > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-submit .eyebrow {
  color: var(--orange);
}

.page-faq .faq-submit .t-h2 {
  color: var(--ink-text);
}

.page-faq .faq-submit__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(16, 19, 26, .62);
  max-width: 20em;
}

.page-faq .faq-submit__grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-faq .faq-submit__card {
  position: relative;
  padding: 22px 20px 24px;
  background: rgba(255, 255, 255, .62);
  border: 1px solid rgba(16, 19, 26, .16);
  box-shadow: 5px 5px 0 rgba(16, 19, 26, .07);
}

.page-faq .faq-submit__tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange);
  border: 1px solid rgba(255, 106, 26, .55);
  padding: 3px 8px;
  margin-bottom: 14px;
}

.page-faq .faq-submit__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--ink-text);
}

.page-faq .faq-submit__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(16, 19, 26, .74);
}

.page-faq .faq-contact {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid rgba(16, 19, 26, .18);
  display: grid;
  gap: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(16, 19, 26, .78);
}

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

.page-faq .faq-contact a {
  color: var(--ink-text);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
}

.page-faq .faq-contact a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

/* ============ 问答列表 ============ */
.page-faq .faq-list-section {
  padding: clamp(44px, 6vw, 78px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink-900);
}

.page-faq .faq-list {
  margin-top: 28px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding: 19px 34px 19px 0;
  position: relative;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  line-height: 1.55;
  color: var(--text-1);
  transition: color .18s var(--ease-out);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -6px;
  border-right: 2px solid var(--orange);
  border-bottom: 2px solid var(--orange);
  transform: rotate(45deg);
  transition: transform .2s var(--ease-out), margin-top .2s var(--ease-out);
}

.page-faq .faq-item[open] > summary::after {
  transform: rotate(-135deg);
  margin-top: -2px;
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__tag {
  flex: 0 0 auto;
}

.page-faq .faq-item__body {
  padding: 0 34px 22px 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-2);
  max-width: 62ch;
}

@media (hover: hover) {
  .page-faq .faq-item > summary:hover {
    color: var(--orange-soft);
  }
}

.page-faq .faq-item[open] > summary {
  color: var(--orange-soft);
}

/* ============ 结尾行动区 ============ */
.page-faq .faq-cta {
  padding: clamp(44px, 6vw, 74px) 0;
  background:
    linear-gradient(120deg, rgba(255, 106, 26, .16), rgba(255, 106, 26, 0) 62%),
    var(--ink-850);
}

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

.page-faq .faq-cta h2 {
  margin: 0 0 10px;
}

.page-faq .faq-cta__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-2);
  max-width: 44em;
}

.page-faq .faq-cta .btn {
  justify-self: start;
}

/* ============ 媒体查询 ============ */
@media (min-width: 560px) {
  .page-faq .faq-submit__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 800px) {
  .page-faq .faq-finder__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border: 1px solid var(--line);
    background: var(--ink-850);
  }

  .page-faq .faq-finder__card {
    border: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-finder__card:first-child {
    border-left: 0;
  }

  .page-faq .faq-submit__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 44px;
  }

  .page-faq .faq-cta .btn {
    justify-self: end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
  }

  .page-faq .faq-steps::before {
    left: 10px;
    right: 10px;
    top: 4px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--orange), var(--orange-soft) 55%, var(--line));
  }

  .page-faq .faq-steps li {
    padding: 26px 0 0;
  }

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

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

@media (min-width: 940px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    gap: 56px;
    align-items: center;
    padding: 40px 0 66px;
  }

  .page-faq .faq-answer__grid {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-finder__card,
  .page-faq .faq-finder__card::before,
  .page-faq .faq-checks li,
  .page-faq .faq-points li,
  .page-faq .faq-item > summary::after {
    transition: none;
  }
}