.page-faq {
  --faq-gap: clamp(16px, 2.4vw, 28px);
  --faq-idx: 248px;
  background: var(--ink-900);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(88px, 11vw, 128px) 0 clamp(36px, 5vw, 56px);
  background:
    radial-gradient(1100px 420px at 78% -20%, rgba(61, 255, 158, .13), transparent 68%),
    radial-gradient(720px 320px at 6% 0%, rgba(53, 215, 255, .10), transparent 70%),
    var(--ink-800);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(36, 51, 79, .6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 51, 79, .6) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: .55;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 88%);
}

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

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 22px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5.4vw, 52px);
  line-height: 1.12;
  letter-spacing: -.01em;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-fact {
  background: var(--ink-700);
  padding: 16px 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-fact__value {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--green);
  letter-spacing: -.01em;
}

.page-faq .faq-fact__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--green-dim);
}

.page-faq .faq-fact__label {
  flex-basis: 100%;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- 通用分节 ---------- */
.page-faq .faq-band {
  padding: clamp(44px, 6.5vw, 88px) 0;
}

.page-faq .faq-band--paths {
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-qa {
  background: linear-gradient(180deg, var(--ink-900), var(--ink-800) 18%, var(--ink-800) 82%, var(--ink-900));
}

.page-faq .faq-head {
  max-width: 70ch;
}

.page-faq .faq-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.2;
}

.page-faq .faq-head p {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 图片区 ---------- */
.page-faq .faq-figure {
  margin: 30px 0 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-faq .faq-figure--price img {
  aspect-ratio: 10 / 7;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

/* ---------- 三步路径卡 ---------- */
.page-faq .path-cards {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .path-card {
  position: relative;
  padding: 24px 20px 20px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
  transition: border-color .18s ease;
}

.page-faq .path-card:hover {
  border-color: rgba(61, 255, 158, .55);
}

.page-faq .path-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  color: var(--green);
  letter-spacing: -.02em;
}

.page-faq .path-card h3 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .path-card p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .path-card p.path-card__meta {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

/* ---------- 问答两栏 ---------- */
.page-faq .qa-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 40px);
}

.page-faq .qa-index {
  padding: 20px 18px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .qa-index__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-faq .qa-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
  transition: background .16s ease, color .16s ease, border-color .16s ease;
}

.page-faq .qa-index__link:hover,
.page-faq .qa-index__link:focus-visible {
  border-left-color: var(--green);
  background: rgba(61, 255, 158, .08);
  color: var(--green);
  outline: none;
}

.page-faq .qa-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-faq .qa-index__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-group {
  scroll-margin-top: 96px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.page-faq .qa-group + .qa-group {
  margin-top: clamp(36px, 5vw, 64px);
}

.page-faq .qa-group:target {
  border-top-color: var(--green);
}

.page-faq .qa-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 22px;
}

.page-faq .qa-group__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  background: var(--green);
  color: var(--ink-900);
  padding: 3px 7px;
  line-height: 1.5;
}

.page-faq .qa-group:target .qa-group__no {
  background: var(--cyan);
}

.page-faq .qa-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 800;
  line-height: 1.25;
}

.page-faq .qa-group__head p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 价格卡 ---------- */
.page-faq .price-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .price-card {
  display: flex;
  flex-direction: column;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--orange-dim);
  background: var(--ink-700);
  transition: border-color .18s ease;
}

.page-faq .price-card:hover {
  border-color: rgba(255, 138, 61, .5);
  border-top-color: var(--orange);
}

.page-faq .price-card--version {
  border-top-color: var(--cyan);
}

.page-faq .price-card--version:hover {
  border-color: rgba(53, 215, 255, .5);
  border-top-color: var(--cyan);
}

.page-faq .price-card .field-label {
  margin: 0 0 12px;
}

.page-faq .price-card__amount {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 600;
  line-height: 1.15;
  color: var(--orange);
}

.page-faq .price-card--version .price-card__amount {
  color: var(--cyan);
}

.page-faq .price-card__unit {
  margin-left: 5px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}

.page-faq .price-card__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 手风琴条目 ---------- */
.page-faq .qa-list {
  margin-top: 22px;
}

.page-faq .qa-item {
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .qa-item + .qa-item {
  margin-top: 10px;
}

.page-faq .qa-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  transition: background .16s ease, color .16s ease;
}

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

.page-faq .qa-item > summary::marker {
  content: "";
}

.page-faq .qa-item > summary::before {
  content: "+";
  flex: none;
  width: 18px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.4;
  color: var(--green);
  text-align: center;
}

.page-faq .qa-item[open] > summary::before {
  content: "−";
  color: var(--green-dim);
}

.page-faq .qa-item > summary:hover {
  background: rgba(61, 255, 158, .06);
  color: var(--green);
}

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

.page-faq .qa-item[open] > summary {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa-item__body {
  padding: 15px 18px 20px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .qa-item__body p {
  margin: 0;
}

.page-faq .qa-item__body .num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--green);
}

/* ---------- 球门分区图 ---------- */
.page-faq .goal-diagram {
  margin: 0 0 24px;
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--ink-900);
}

.page-faq .goal-diagram__svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-faq .goal-diagram__caption {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 客服准备 ---------- */
.page-faq .prep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-faq .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .prep-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  background: var(--ink-800);
}

.page-faq .prep-list__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--green);
}

.page-faq .prep-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .prep-contact {
  padding: 20px 18px;
  border: 1px solid var(--line);
  background: var(--ink-700);
}

.page-faq .prep-contact__line {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  margin: 14px 0 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.page-faq .prep-contact__k {
  letter-spacing: .14em;
  font-size: 12px;
  color: var(--muted);
}

.page-faq .prep-contact__v {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text);
  word-break: break-all;
}

.page-faq .prep-contact .btn {
  margin-top: 18px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .price-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .path-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .path-card:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 52px;
    right: calc(var(--faq-gap) * -1);
    width: var(--faq-gap);
    height: 1px;
    background: var(--line);
  }
}

@media (min-width: 980px) {
  .page-faq .qa-layout {
    grid-template-columns: var(--faq-idx) minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 3.4vw, 44px);
  }

  .page-faq .qa-index {
    position: sticky;
    top: 92px;
  }

  .page-faq .price-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-faq .price-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .prep-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 28px;
  }

  .page-faq .qa-item > summary {
    padding: 18px 22px;
    font-size: 17px;
  }

  .page-faq .qa-item__body {
    padding: 16px 22px 22px 52px;
  }
}