/* ===== 使用指南 /guide/ 页面专属样式 ===== */

.page-faq .faq-hero {
  padding-top: 28px;
  padding-bottom: 44px;
}

/* 面包屑 */
.page-faq .breadcrumbs {
  font-size: 13px;
  color: var(--muted);
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
}

.page-faq .breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  color: var(--grid);
}

.page-faq .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan);
}

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

/* 首屏 */
.page-faq .faq-hero-grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 18px;
  font-size: clamp(28px, 6.4vw, 50px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero .lead a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
  transition: border-color 180ms var(--ease);
}

.page-faq .faq-hero .lead a:hover,
.page-faq .faq-hero .lead a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* 首屏数据条 */
.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-faq .hero-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 12px;
  background: var(--ink);
}

.page-faq .hero-stat-num {
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--yellow);
}

.page-faq .hero-stat-label {
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* 分类胶囊 */
.page-faq .faq-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--grid);
  border-radius: 2px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.04em;
  line-height: 1.4;
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .faq-pill::before {
  content: "";
  flex: 0 0 auto;
  width: 4px;
  height: 4px;
  background: var(--cyan);
}

.page-faq .faq-pill:hover,
.page-faq .faq-pill:focus-visible,
.page-faq .faq-pill[aria-current="true"] {
  color: var(--cyan-soft);
  border-color: var(--cyan);
  background: rgba(20, 184, 196, 0.08);
}

/* 主体两栏 */
.page-faq .faq-layout {
  padding-bottom: 68px;
}

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

.page-faq .faq-aside {
  margin-top: 48px;
}

/* 区块 */
.page-faq .faq-section {
  padding-bottom: 42px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-section + .faq-section {
  padding-top: 42px;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  margin-bottom: 22px;
}

.page-faq .faq-index {
  padding-top: 6px;
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-section-head h2 {
  margin: 0 0 8px;
  font-size: 22px;
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-section-sub {
  margin: 0;
  max-width: 660px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-section-sub a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
}

/* 三步开通 */
.page-faq .faq-steps {
  display: grid;
  gap: 30px;
}

.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--grid);
}

.page-faq .step {
  position: relative;
  padding-bottom: 26px;
}

.page-faq .step:last-child {
  padding-bottom: 0;
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: -25.5px;
  top: 7px;
  width: 7px;
  height: 7px;
  background: var(--ink);
  border: 1px solid var(--cyan);
}

.page-faq .step-num {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--yellow);
}

.page-faq .step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.5;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* 图片 */
.page-faq .faq-step-figure,
.page-faq .faq-device-figure {
  margin: 0;
}

.page-faq .faq-step-figure img,
.page-faq .faq-device-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-faq .faq-step-figure figcaption,
.page-faq .faq-device-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-device-figure {
  margin-bottom: 26px;
}

/* 问答手风琴 */
.page-faq .qa-list {
  border-top: 1px solid var(--grid);
}

.page-faq .qa {
  border-bottom: 1px solid var(--grid);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  list-style: none;
  cursor: pointer;
}

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

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

.page-faq .qa summary:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .qa-question {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 16px;
  line-height: 1.65;
  font-weight: 700;
  color: var(--paper);
  transition: color 180ms var(--ease);
}

.page-faq .qa summary:hover .qa-question,
.page-faq .qa summary:focus-visible .qa-question {
  color: var(--cyan-soft);
}

.page-faq .qa[open] .qa-question {
  color: var(--cyan);
}

.page-faq .qa-icon {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 4px;
}

.page-faq .qa-icon::before,
.page-faq .qa-icon::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

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

.page-faq .qa-icon::after {
  top: 0;
  left: 8px;
  width: 2px;
  height: 18px;
}

.page-faq .qa[open] .qa-icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa-body {
  max-width: 760px;
  padding: 0 30px 22px 0;
}

.page-faq .qa-body .qa-lead {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .qa-body .qa-lead a,
.page-faq .qa-body li a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
}

.page-faq .qa-body .qa-lead a:hover,
.page-faq .qa-body li a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .qa-body ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .qa-body li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .qa-body li + li {
  margin-top: 8px;
}

.page-faq .qa-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 8px;
  height: 1px;
  background: var(--grid);
}

.page-faq .qa-body p:not(.qa-lead) {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* 费用摘要带 */
.page-faq .faq-aside {
  border: 1px solid var(--grid);
  background: var(--ink-2);
}

.page-faq .faq-aside-head {
  padding: 18px 20px 16px;
  border-bottom: 1px solid var(--grid);
  background: linear-gradient(100deg, rgba(20, 184, 196, 0.16), rgba(11, 26, 51, 0) 72%);
}

.page-faq .faq-aside-head h2 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-aside-head p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .cost-list {
  margin: 0;
  padding: 0;
}

.page-faq .cost-row {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--grid);
}

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

.page-faq .cost-row dt {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .cost-row dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .cost-num {
  margin-right: 2px;
  font-size: 20px;
  font-weight: 600;
  color: var(--yellow);
}

.page-faq .faq-aside-foot {
  padding: 16px 20px 20px;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-aside-note {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-aside-note a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-aside-note a:hover {
  border-bottom-color: var(--cyan);
}

/* 平板与桌面 */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding-top: 40px;
    padding-bottom: 56px;
  }

  .page-faq .faq-section-head h2 {
    font-size: 26px;
  }

  .page-faq .qa summary {
    padding: 22px 0;
  }

  .page-faq .qa-question {
    font-size: 17px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    align-items: end;
    gap: 56px;
  }

  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-step-figure {
    margin-top: 6px;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    column-gap: 56px;
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    margin-top: 0;
  }
}

@media (max-width: 420px) {
  .page-faq .hero-stat {
    padding: 13px 9px;
  }

  .page-faq .hero-stat-num {
    font-size: 21px;
  }

  .page-faq .hero-stat-label {
    font-size: 10.5px;
  }

  .page-faq .qa-body {
    padding-right: 12px;
  }

  .page-faq .cost-row {
    grid-template-columns: 66px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-icon::before,
  .page-faq .qa-icon::after,
  .page-faq .qa-question,
  .page-faq .faq-pill,
  .page-faq .breadcrumbs a,
  .page-faq .faq-hero .lead a {
    transition: none;
  }
}