/* ================= 问题排查页 ================= */
.page-faq {
  --faq-line: rgba(11, 42, 69, 0.14);
  --faq-line-soft: rgba(11, 42, 69, 0.08);
  --faq-card: #ffffff;
  --faq-ink-soft: rgba(245, 241, 232, 0.76);
  --faq-shell-max: 1180px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(115% 130% at 88% -12%, rgba(23, 224, 200, 0.24) 0%, rgba(23, 224, 200, 0) 58%),
    linear-gradient(158deg, var(--abyss) 0%, var(--deep) 58%, var(--ink) 100%);
  color: var(--paper);
  border-bottom: 3px solid var(--coral);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -110px;
  bottom: -170px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(23, 224, 200, 0.24);
  border-radius: 50%;
  box-shadow:
    0 0 0 48px rgba(23, 224, 200, 0.06),
    0 0 0 96px rgba(23, 224, 200, 0.035);
  pointer-events: none;
}

.page-faq .faq-hero .wrap {
  position: relative;
  z-index: 1;
  padding-top: 30px;
  padding-bottom: 52px;
}

.page-faq .faq-hero .breadcrumb-link {
  color: var(--shallow);
}

.page-faq .faq-hero .breadcrumb-item {
  color: rgba(245, 241, 232, 0.62);
}

.page-faq .faq-hero .eyebrow {
  margin: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-size: clamp(28px, 5.4vw, 52px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--faq-ink-soft);
}

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

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  margin: 24px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(169, 232, 224, 0.76);
}

/* ---------- 页面骨架 ---------- */
.page-faq .page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: 34px;
  padding-bottom: 72px;
}

@media (min-width: 900px) {
  .page-faq .page-shell {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 52px;
    padding-top: 52px;
    padding-bottom: 96px;
  }
}

/* ---------- 左侧章节栏 ---------- */
.page-faq .faq-rail {
  display: none;
}

@media (min-width: 900px) {
  .page-faq .faq-rail {
    display: block;
    align-self: start;
    position: sticky;
    top: 28px;
    border-left: 3px solid var(--cyan);
    padding-left: 16px;
  }
}

.page-faq .rail-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-faq .rail-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .rail-link {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--stone);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.page-faq .rail-link:hover,
.page-faq .rail-link:focus-visible {
  color: var(--abyss);
  background: rgba(23, 224, 200, 0.12);
  border-left-color: var(--cyan);
  outline: none;
}

.page-faq .faq-rail-anchor {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 22px;
  padding: 11px 13px;
  border: 1px solid var(--cyan);
  background: rgba(23, 224, 200, 0.1);
  color: var(--abyss);
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-rail-anchor::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--coral);
}

.page-faq .faq-rail-anchor:hover,
.page-faq .faq-rail-anchor:focus-visible {
  background: rgba(23, 224, 200, 0.24);
  transform: translateX(2px);
  outline: none;
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-section {
  margin-bottom: 52px;
  scroll-margin-top: 96px;
}

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

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

.page-faq .faq-section__head .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-faq .faq-section h2 {
  margin: 0;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: 0.015em;
  color: var(--abyss);
}

.page-faq .faq-section__lede {
  margin: 13px 0 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--stone);
}

.page-faq .faq-section__lede a {
  color: var(--deep);
  text-decoration: underline;
  text-decoration-color: rgba(23, 224, 200, 0.7);
  text-underline-offset: 3px;
}

.page-faq .faq-section__lede a:hover {
  color: var(--abyss);
  text-decoration-color: var(--coral);
}

/* ---------- 编号步骤 ---------- */
.page-faq .steps {
  counter-reset: faqstep;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step {
  position: relative;
  padding: 16px 18px 16px 70px;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
}

.page-faq .step::before {
  counter-increment: faqstep;
  content: "0" counter(faqstep);
  position: absolute;
  left: 18px;
  top: 16px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--cyan);
  color: var(--abyss);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-faq .step strong {
  display: block;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--abyss);
  line-height: 1.55;
}

.page-faq .step p {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 图片 ---------- */
.page-faq .figure-frame {
  margin: 22px 0 0;
}

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

.page-faq .figure-caption {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--stone);
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .qa {
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-left: 3px solid rgba(11, 42, 69, 0.14);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  box-shadow: var(--shadow-stack);
}

.page-faq .qa > summary {
  position: relative;
  padding: 16px 46px 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--abyss);
}

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

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--coral);
}

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

.page-faq .qa > summary:hover {
  background: rgba(23, 224, 200, 0.07);
}

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

.page-faq .qa__a {
  margin: 0 18px 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--faq-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--stone);
}

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

.page-faq .qa__a p + p {
  margin-top: 10px;
}

/* ---------- 版本对照 ---------- */
.page-faq .version-pair {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

@media (min-width: 720px) {
  .page-faq .version-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .version-card {
  padding: 18px 18px 20px;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
}

.page-faq .version-card--new {
  background: linear-gradient(160deg, var(--deep) 0%, var(--abyss) 100%);
  border-color: var(--deep);
}

.page-faq .version-card__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  border: 1px solid var(--faq-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-faq .version-card--new .version-card__tag {
  border-color: rgba(23, 224, 200, 0.5);
  background: rgba(23, 224, 200, 0.1);
  color: var(--cyan);
}

.page-faq .version-card h3 {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--abyss);
}

.page-faq .version-card--new h3 {
  color: var(--paper);
}

.page-faq .version-card ul {
  margin: 0;
  padding-left: 18px;
}

.page-faq .version-card li {
  margin-bottom: 6px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--stone);
}

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

.page-faq .version-card--new li {
  color: var(--faq-ink-soft);
}

/* ---------- 规格条 ---------- */
.page-faq .spec-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin-top: 20px;
  padding: 16px 18px;
  background: var(--abyss);
  border-left: 3px solid var(--coral);
}

.page-faq .spec-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .spec-key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--shallow);
}

.page-faq .spec-val {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--paper);
}

/* ---------- 权益分层 ---------- */
.page-faq .tier-list {
  display: grid;
  margin-top: 20px;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
}

.page-faq .tier {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .tier:last-child {
  border-bottom: 0;
}

@media (min-width: 760px) {
  .page-faq .tier {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
    padding: 18px 20px;
  }
}

.page-faq .tier__name {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--abyss);
}

.page-faq .tier__name::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-faq .tier:nth-child(2) .tier__name::before {
  background: var(--coral);
}

.page-faq .tier:nth-child(3) .tier__name::before {
  background: var(--moss);
}

.page-faq .tier__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 模板卡片 ---------- */
.page-faq .tpl-grid {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

@media (min-width: 720px) {
  .page-faq .tpl-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .tpl-card {
  padding: 18px;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--moss);
}

.page-faq .tpl-card:nth-child(2) {
  border-top-color: var(--clay);
}

.page-faq .tpl-card:nth-child(3) {
  border-top-color: var(--cyan);
}

.page-faq .tpl-card:nth-child(4) {
  border-top-color: var(--coral);
}

.page-faq .tpl-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--abyss);
}

.page-faq .tpl-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 速查表 ---------- */
.page-faq .table-scroll {
  margin-top: 20px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--deep);
}

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

.page-faq .lookup th,
.page-faq .lookup td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .lookup thead th {
  background: var(--deep);
  color: var(--shallow);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.page-faq .lookup tbody tr:nth-child(even) {
  background: rgba(169, 232, 224, 0.12);
}

.page-faq .lookup tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .lookup td {
  color: var(--stone);
  line-height: 1.7;
}

.page-faq .lookup td:first-child {
  color: var(--abyss);
  font-weight: 600;
}

.page-faq .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 支持面板 ---------- */
.page-faq .support {
  margin-top: 26px;
  padding: 26px 22px 28px;
  background: linear-gradient(150deg, var(--abyss) 0%, var(--ink) 100%);
  border-top: 3px solid var(--coral);
  color: var(--paper);
}

.page-faq .support h3 {
  margin: 0;
  font-size: clamp(19px, 2.6vw, 23px);
  font-weight: 800;
  letter-spacing: 0.015em;
  color: var(--paper);
}

.page-faq .support > p {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .support-list {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .page-faq .support-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 28px;
  }
}

.page-faq .support-list li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-left: 12px;
  border-left: 2px solid rgba(23, 224, 200, 0.5);
}

.page-faq .support-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--shallow);
}

.page-faq .support-value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .rail-link,
  .page-faq .faq-rail-anchor,
  .page-faq .qa {
    transition: none;
  }

  .page-faq .faq-rail-anchor:hover,
  .page-faq .faq-rail-anchor:focus-visible {
    transform: none;
  }
}