.page-faq {
  --faq-space: clamp(32px, 4.5vw, 56px);
}

/* ---------- 面包屑与首屏 ---------- */
.page-faq .faq-crumbs {
  padding-top: 20px;
}

.page-faq .faq-hero {
  padding-top: 14px;
  padding-bottom: clamp(28px, 4vw, 48px);
}

.page-faq .faq-hero__title {
  margin: 12px 0 20px;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
}

.page-faq .faq-meta {
  margin: clamp(24px, 3.5vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-meta__item {
  background: var(--cream);
  padding: 14px 14px 16px;
  min-width: 0;
}

.page-faq .faq-meta dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-faq .faq-meta dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--deep);
}

/* ---------- 画板节奏 ---------- */
.page-faq .board.faq-section {
  padding-top: var(--faq-space);
  padding-bottom: var(--faq-space);
  border-top: 1px solid var(--line);
}

.page-faq .board--ink.faq-section {
  border-top: 1px solid var(--line-strong);
}

.page-faq .board-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .prose {
  max-width: 68ch;
}

/* ---------- 01 排查前准备 ---------- */
.page-faq .faq-prep {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

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

.page-faq .faq-prep__text li {
  position: relative;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--deep);
}

.page-faq .faq-prep__text li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  background: var(--deep-teal);
}

.page-faq .faq-prep__text strong {
  color: var(--ink);
}

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

/* ---------- 02 五步排查 ---------- */
.page-faq .faq-steps__intro {
  margin-bottom: clamp(20px, 3vw, 28px);
}

.page-faq .faq-steps__fig {
  margin: 0 0 clamp(26px, 3.5vw, 40px);
}

.page-faq .faq-steps {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: var(--deep-teal);
  opacity: 0.45;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-top: 4px;
}

.page-faq .faq-step__num {
  position: relative;
  z-index: 1;
  display: block;
  padding: 8px 0;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
  background: var(--cream);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-step__num:hover {
  color: var(--ink);
}

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

.page-faq .faq-step__body {
  border-bottom: 1px solid var(--line);
  padding-bottom: 6px;
  min-width: 0;
}

.page-faq .faq-step__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 10px 0;
  cursor: pointer;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--deep);
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-step__summary::marker {
  content: "";
}

.page-faq .faq-step__summary::after {
  content: "＋";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--slate);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-step__body[open] .faq-step__summary::after {
  content: "－";
  color: var(--orange);
}

.page-faq .faq-step__summary:hover {
  color: var(--ink);
}

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

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

.page-faq .faq-step__summary .tag {
  flex: 0 0 auto;
}

.page-faq .faq-step__inner {
  padding: 2px 0 14px;
}

.page-faq .faq-pair {
  margin: 0;
  padding: 0;
}

.page-faq .faq-pair dt {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--deep-teal);
}

.page-faq .faq-pair dt:first-child {
  margin-top: 0;
}

.page-faq .faq-pair dd {
  margin: 4px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--deep);
}

/* ---------- 03 常见成因 ---------- */
.page-faq .faq-causes {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-cause {
  break-inside: avoid;
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .faq-cause:hover {
  background: var(--paper);
}

.page-faq .faq-cause__layer {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 6px;
  border: 1px solid var(--deep-teal);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--deep-teal);
}

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

.page-faq .faq-cause__next {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--slate);
}

.page-faq .faq-cause__next span {
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
}

/* ---------- 04 版本兼容 ---------- */
.page-faq .faq-compat-table {
  margin-top: clamp(20px, 3vw, 28px);
  width: 100%;
}

.page-faq .faq-compat-note {
  margin: 18px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .faq-compat-note a {
  color: var(--deep-teal);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-compat-note a:hover,
.page-faq .faq-compat-note a:focus-visible {
  border-bottom-color: currentColor;
}

/* ---------- 05 反馈 ---------- */
.page-faq .faq-need {
  list-style: none;
  margin: clamp(18px, 2.5vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-need li {
  position: relative;
  background: var(--cream);
  padding: 12px 14px 12px 34px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--deep);
}

.page-faq .faq-need li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 19px;
  width: 6px;
  height: 6px;
  background: var(--orange);
}

.page-faq .faq-contact {
  margin-top: clamp(20px, 3vw, 28px);
  display: grid;
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-faq .faq-contact__item {
  background: var(--cream);
  padding: 16px;
  display: grid;
  gap: 8px;
  min-width: 0;
}

.page-faq .faq-contact__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-faq .faq-contact__val {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__note {
  margin: 16px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .faq-contact__note a {
  color: var(--deep-teal);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-contact__note a:hover,
.page-faq .faq-contact__note a:focus-visible {
  border-bottom-color: currentColor;
}

/* ---------- 06 模板 ---------- */
.page-faq .faq-template-block__lede {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cream-inv);
  opacity: 0.88;
}

.page-faq .faq-template-block__tools {
  margin: clamp(18px, 2.5vw, 24px) 0 14px;
}

.page-faq .faq-template {
  margin: 0;
  padding: 18px 16px;
  border: 1px solid var(--line-inv);
  background: var(--panel-blue);
  color: var(--cream-inv);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.95;
  letter-spacing: 0.02em;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow-x: auto;
}

.page-faq .faq-more {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line-inv);
}

.page-faq .faq-more__summary {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--celadon);
}

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

.page-faq .faq-more__summary::marker {
  content: "";
}

.page-faq .faq-more__summary::after {
  content: "＋";
  margin-left: auto;
  color: var(--cream-inv);
  opacity: 0.6;
}

.page-faq .faq-more[open] .faq-more__summary::after {
  content: "－";
}

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

.page-faq .faq-links {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-links a {
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream-inv);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-links a:hover,
.page-faq .faq-links a:focus-visible {
  color: var(--celadon);
  border-bottom-color: currentColor;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-meta dd {
    font-size: 22px;
  }

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

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

@media (min-width: 900px) {
  .page-faq .faq-prep {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-faq .faq-causes {
    column-count: 2;
    column-gap: 44px;
  }

  .page-faq .faq-step {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 26px;
  }

  .page-faq .faq-step__num {
    font-size: 52px;
  }

  .page-faq .faq-steps::before {
    left: 47px;
  }

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

  .page-faq .faq-step__inner {
    padding-bottom: 18px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-step__summary {
    font-size: 17px;
  }

  .page-faq .faq-template {
    font-size: 12px;
    padding: 14px 12px;
  }
}
<<<END>>>