/* ===== 问题排查页 · page-faq ===== */
.page-faq {
  --faq-rule: rgba(4, 16, 31, .16);
  --faq-rule-soft: rgba(4, 16, 31, .08);
  --faq-body: #22314A;
  --faq-panel: #FFFFFF;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
}

.page-faq .faq-crumbs {
  padding-top: 14px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 5vw, 52px) 0 clamp(20px, 4vw, 40px);
  background:
    radial-gradient(110% 80% at 92% -12%, rgba(37, 225, 208, .20), transparent 62%),
    linear-gradient(180deg, #FFFFFF 0%, var(--color-paper) 100%);
  border-bottom: 1px solid var(--faq-rule-soft);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -34%;
  width: 46%;
  height: 168%;
  background: linear-gradient(158deg, rgba(37, 225, 208, .14), rgba(70, 185, 122, .08) 52%, transparent 76%);
  transform: rotate(13deg);
  pointer-events: none;
}

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

.page-faq .faq-hero h1 {
  margin: 12px 0 16px;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -.022em;
  max-width: 22ch;
}

.page-faq .faq-hero .lead {
  margin: 0 0 14px;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .faq-hero__note {
  margin: 0 0 18px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-body);
  border-left: 2px solid var(--color-neon);
  padding-left: 12px;
}

.page-faq .faq-hero__strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(20px, 4vw, 34px);
}

.page-faq .faq-hero__strip .status-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  line-height: 1.4;
}

/* 快速判断折线图 */
.page-faq .faq-tri {
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--faq-rule);
}

.page-faq .faq-tri__svg {
  display: block;
  width: 100%;
  max-width: 760px;
  height: auto;
}

.page-faq .faq-tri__rail {
  stroke: var(--color-dust);
  stroke-width: 1.5;
  stroke-dasharray: 6 7;
}

.page-faq .faq-tri__node circle {
  fill: var(--color-paper);
  stroke: var(--color-neon);
  stroke-width: 3;
}

.page-faq .faq-tri__node--end circle {
  fill: var(--color-ink);
  stroke: var(--color-sunset);
}

.page-faq .faq-tri__node text {
  font-family: var(--font-sans);
  font-size: 19px;
  font-weight: 700;
  text-anchor: middle;
  fill: var(--color-ink);
}

.page-faq .faq-tri__node text:last-child {
  font-size: 16px;
  font-weight: 400;
  fill: var(--color-dust);
}

.page-faq .faq-tri figcaption {
  margin-top: 8px;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 26px;
  padding-top: clamp(24px, 4.5vw, 52px);
  padding-bottom: clamp(44px, 7vw, 96px);
}

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

.page-faq .faq-cats__title {
  margin: 0 0 10px;
  color: var(--color-dust);
}

.page-faq .faq-cats ul {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-cats a {
  display: block;
  white-space: nowrap;
  padding: 8px 13px;
  border: 1px solid var(--faq-rule);
  border-left: 2px solid transparent;
  background: var(--faq-panel);
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-cats a:hover,
.page-faq .faq-cats a:focus-visible {
  border-left-color: var(--color-neon);
  background: rgba(37, 225, 208, .13);
  outline: none;
}

.page-faq .faq-stream {
  display: grid;
  gap: clamp(38px, 5.4vw, 68px);
  min-width: 0;
}

.page-faq .faq-block {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-block__head {
  margin-bottom: 20px;
}

.page-faq .faq-block__head h2 {
  margin: 8px 0 12px;
  font-size: clamp(23px, 3.2vw, 33px);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-block__head > p:last-child {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-body);
}

/* ---------- 图片 ---------- */
.page-faq .faq-block__figure,
.page-faq .faq-compare__figure {
  margin: 18px 0 22px;
}

.page-faq .media-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-rule);
  background: var(--color-stand);
}

.page-faq .media-figure__cap {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--color-dust);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-item[open] {
  background: linear-gradient(180deg, rgba(37, 225, 208, .07), rgba(37, 225, 208, 0) 68%);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: baseline;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--color-sunset);
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--color-neon);
  outline-offset: 2px;
}

.page-faq .faq-item__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  padding: 3px 6px;
  background: var(--color-ink);
  color: var(--color-neon);
  font-size: 12px;
  letter-spacing: .05em;
}

.page-faq .faq-item__body {
  padding: 2px 4px 22px;
}

.page-faq .faq-item__body > p {
  margin: 0 0 10px;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .faq-item__body a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-neon);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq .faq-item__note {
  margin: 10px 0 0;
  max-width: 66ch;
  padding-left: 12px;
  border-left: 2px dashed var(--faq-rule);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--color-dust);
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  counter-reset: faqstep;
  display: grid;
  gap: 11px;
  margin: 0 0 4px;
  padding: 0;
  list-style: none;
  max-width: 68ch;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 46px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--faq-body);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  min-width: 32px;
  padding: 2px 4px;
  text-align: center;
  background: var(--color-ink);
  color: var(--color-neon);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
}

.page-faq .faq-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 15px;
  top: 28px;
  bottom: -12px;
  border-left: 1px dashed var(--faq-rule);
}

.page-faq .faq-steps--plain li::before {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--faq-rule);
}

/* ---------- 费用对照表 ---------- */
.page-faq .faq-compare {
  display: grid;
  gap: 20px;
  margin: 6px 0 26px;
}

.page-faq .faq-compare__scroll {
  overflow-x: auto;
  border: 1px solid var(--faq-rule);
  background: var(--faq-panel);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-compare table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .faq-compare th,
.page-faq .faq-compare td {
  padding: 13px 15px;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-compare thead th {
  background: var(--color-ink);
  color: var(--color-paper);
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: .02em;
  white-space: nowrap;
}

.page-faq .faq-compare thead th:nth-child(2) {
  color: var(--color-neon);
}

.page-faq .faq-compare thead th:nth-child(3) {
  color: var(--color-sunset);
}

.page-faq .faq-compare tbody th {
  width: 26%;
  font-weight: 600;
  color: var(--color-ink);
  background: rgba(4, 16, 31, .03);
}

.page-faq .faq-compare tbody td {
  color: var(--faq-body);
}

.page-faq .faq-compare tbody tr:hover {
  background: rgba(37, 225, 208, .12);
}

.page-faq .faq-compare .mono {
  font-family: var(--font-mono);
  font-size: 1.08em;
  font-weight: 600;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-more {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .faq-more a {
  color: var(--color-ink);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--color-neon);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ---------- 客服收尾 ---------- */
.page-faq .faq-support {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.6vw, 52px) clamp(20px, 4vw, 46px);
  background: var(--color-ink);
  color: var(--color-paper);
}

.page-faq .faq-support::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(122deg, rgba(37, 225, 208, .20), transparent 58%);
  pointer-events: none;
}

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

.page-faq .faq-support .chapter-label {
  color: var(--color-neon);
}

.page-faq .faq-support h2 {
  margin: 10px 0 14px;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.2;
  font-weight: 700;
  max-width: 24ch;
}

.page-faq .faq-support > p {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--color-mist);
}

.page-faq .faq-support__list {
  display: grid;
  gap: 14px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-support__list li {
  padding-left: 14px;
  border-left: 2px solid var(--color-neon);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--color-mist);
}

.page-faq .faq-support__k {
  display: block;
  margin-bottom: 3px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--color-paper);
}

.page-faq .faq-support .btn {
  text-decoration: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-support__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-compare {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-compare__figure {
    margin: 0;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 62px;
    align-items: start;
  }

  .page-faq .faq-cats {
    position: sticky;
    top: 88px;
  }

  .page-faq .faq-cats ul {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-cats a {
    white-space: normal;
  }

  .page-faq .faq-compare table {
    min-width: 0;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-shell {
    grid-template-columns: 228px minmax(0, 1fr);
    gap: 76px;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-item__q {
    grid-template-columns: auto minmax(0, 1fr);
    font-size: 16px;
  }

  .page-faq .faq-item__q::after {
    grid-column: 2;
    justify-self: start;
  }

  .page-faq .faq-steps li {
    padding-left: 40px;
    font-size: 15px;
  }

  .page-faq .faq-tri__node text {
    font-size: 22px;
  }

  .page-faq .faq-tri__node text:last-child {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cats a,
  .page-faq .faq-item__q::after {
    transition: none;
  }
}