.page-faq {
  --faq-pad: clamp(16px, 2.6vw, 30px);
  --faq-narrow: 720px;
  padding-top: 20px;
  padding-bottom: 72px;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding-top: 6px;
  padding-bottom: 2px;
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .crumb {
  color: var(--muted);
  text-decoration: none;
}

.page-faq .crumb + .crumb::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-600);
}

.page-faq .crumb[aria-current="page"] {
  color: var(--cyan);
}

.page-faq a.crumb:hover {
  color: var(--signal);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 26px 0 6px;
}

.page-faq .faq-hero-main {
  position: relative;
}

.page-faq .faq-hero-main::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -14px;
  width: 64px;
  height: 4px;
  background: var(--signal);
}

.page-faq .faq-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 7.2vw, 3.9rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 14px 0 20px;
  color: var(--paper);
}

.page-faq .faq-title-accent {
  display: block;
  color: var(--signal);
}

.page-faq .faq-hero-lede {
  max-width: 44ch;
  font-size: 1rem;
  line-height: 1.82;
  margin: 0 0 18px;
}

.page-faq .faq-hero-aside {
  margin-top: 30px;
}

.page-faq .faq-snapshot {
  position: relative;
  border: var(--border);
  background: linear-gradient(158deg, var(--ink-700) 0%, var(--ink-800) 72%);
  box-shadow: var(--shadow-hard);
  padding: var(--faq-pad);
}

.page-faq .faq-snapshot::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 46px;
  height: 6px;
  background: var(--signal);
}

.page-faq .faq-snapshot-num {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 8vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-faq .faq-snapshot-num span {
  display: inline-block;
  margin-left: 8px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted);
}

.page-faq .faq-snapshot-text {
  margin: 0 0 18px;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-snapshot-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-snapshot-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line-600);
  font-size: 0.84rem;
  color: var(--muted);
}

.page-faq .faq-snapshot-list b {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--paper);
  letter-spacing: 0.02em;
}

/* ---------- 首屏图 ---------- */
.page-faq .faq-media-wrap {
  margin-top: 34px;
}

.page-faq .faq-hero-media {
  margin: 0;
}

/* ---------- 主体流 ---------- */
.page-faq .faq-flow {
  display: block;
}

.page-faq .faq-group {
  padding: 40px 0 8px;
  margin-bottom: 26px;
}

.page-faq .faq-group + .faq-group {
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}

.page-faq .faq-group-no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--signal);
  background: var(--ink-800);
  border: var(--border);
  padding: 5px 8px;
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.32rem, 4.4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group-lede {
  max-width: 46ch;
  margin: 0 0 22px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 上手三步：标签切换 ---------- */
.page-faq .faq-steps {
  margin-top: 4px;
}

.page-faq .faq-step-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-faq .faq-step-tab {
  flex: none;
  border: var(--border);
  background: var(--ink-800);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 11px 15px;
  cursor: pointer;
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-step-tab:hover {
  color: var(--paper);
  border-color: var(--cyan);
}

.page-faq .faq-step-tab[aria-selected="true"] {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink-900);
}

.page-faq .faq-step-panel {
  border: var(--border);
  background: var(--ink-700);
  box-shadow: var(--shadow-hard);
  padding: var(--faq-pad);
}

.page-faq .faq-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 8vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--line-600);
  margin-bottom: 12px;
}

.page-faq .faq-step-panel[aria-selected="true"] .faq-step-num,
.page-faq .faq-step-panel:not([hidden]) .faq-step-num {
  color: var(--amber);
}

.page-faq .faq-step-lead {
  margin: 0 0 16px;
  font-size: 0.98rem;
  line-height: 1.82;
  color: var(--paper);
  max-width: 44ch;
}

.page-faq .faq-step-list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 11px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-step-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-step-done {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-600);
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-done-tag {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-900);
  background: var(--cyan);
}

/* ---------- 问答折叠组 ---------- */
.page-faq .faq-acc {
  display: grid;
  gap: 10px;
}

.page-faq .faq-acc-item {
  border: var(--border);
  background: var(--ink-800);
}

.page-faq .faq-acc-item .accordion-trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  background: none;
  border: 0;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.96rem;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: background 200ms var(--ease);
}

.page-faq .faq-acc-item .accordion-trigger:hover {
  background: var(--ink-700);
}

.page-faq .faq-q {
  display: block;
  flex: 1 1 auto;
}

.page-faq .faq-chev {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
}

.page-faq .faq-chev::before,
.page-faq .faq-chev::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}

.page-faq .faq-chev::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .faq-chev::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
  transition: transform 200ms var(--ease);
}

.page-faq .accordion-trigger[aria-expanded="true"] .faq-chev::after {
  transform: scaleY(0);
}

.page-faq .accordion-trigger[aria-expanded="true"] .faq-q {
  color: var(--cyan);
}

.page-faq .faq-acc-item .accordion-panel {
  padding: 0 16px 18px;
}

.page-faq .faq-acc-item .accordion-panel p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--muted);
  max-width: 46ch;
}

.page-faq .faq-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-600);
}

.page-faq .faq-inline-link:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ---------- 侧图 ---------- */
.page-faq .faq-side-media {
  margin: 24px 0 0;
}

/* ---------- 排查清单 ---------- */
.page-faq .faq-trouble {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-faq .faq-trouble-item {
  display: flex;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-600);
}

.page-faq .faq-trouble-item:first-child {
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-trouble-no {
  flex: none;
  width: 34px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  padding-top: 2px;
}

.page-faq .faq-trouble-body {
  flex: 1 1 auto;
}

.page-faq .faq-trouble-title {
  margin: 0 0 7px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .faq-trouble-body p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--muted);
  max-width: 48ch;
}

/* ---------- 结尾引导 ---------- */
.page-faq .faq-cta {
  padding-top: 44px;
}

.page-faq .faq-cta-inner {
  border: var(--border);
  background: linear-gradient(152deg, var(--ink-700) 0%, var(--ink-800) 66%, var(--ink-900) 100%);
  box-shadow: var(--shadow-hard);
  padding: var(--faq-pad);
}

.page-faq .faq-cta-title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-cta-inner > .faq-cta-copy > p {
  margin: 0 0 20px;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--muted);
  max-width: 46ch;
}

.page-faq .faq-cta-meta {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-cta-meta li {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-600);
  font-size: 0.85rem;
}

.page-faq .faq-meta-key {
  flex: none;
  width: 52px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding-top: 2px;
}

.page-faq .faq-meta-val {
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.02em;
  word-break: break-word;
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-trouble-item {
    padding: 20px 0;
  }

  .page-faq .faq-trouble-no {
    width: 48px;
    font-size: 1rem;
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding-bottom: 96px;
  }

  .page-faq .faq-hero {
    padding: 40px 0 12px;
  }

  .page-faq .faq-hero-aside {
    margin-top: 66px;
  }

  .page-faq .faq-media-wrap {
    margin-top: 42px;
  }

  .page-faq .faq-group {
    padding: 54px 0 14px;
    margin-bottom: 34px;
  }

  .page-faq .faq-group-head {
    gap: 16px;
    margin-bottom: 26px;
  }

  .page-faq .faq-step-tabs {
    gap: 10px;
    margin-bottom: 22px;
  }

  .page-faq .faq-step-panel {
    padding: 34px;
  }

  .page-faq .faq-acc-item .accordion-trigger {
    padding: 19px 22px;
    font-size: 1rem;
  }

  .page-faq .faq-acc-item .accordion-panel {
    padding: 0 22px 22px;
  }

  .page-faq .faq-cta-inner {
    padding: 40px;
  }

  .page-faq .faq-cta-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 40px;
  }

  .page-faq .faq-cta-copy {
    flex: 1 1 auto;
    max-width: 620px;
  }

  .page-faq .faq-cta-actions {
    flex: none;
    flex-direction: column;
    align-items: stretch;
    padding-top: 42px;
  }

  .page-faq .faq-cta-actions .btn {
    text-align: center;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-group--narrow {
    max-width: var(--faq-narrow);
  }

  .page-faq .faq-group--push {
    max-width: var(--faq-narrow);
    margin-left: auto;
    margin-right: 0;
  }
}