.page-faq,
.page-faq * {
  box-sizing: border-box;
}

.page-faq {
  --faq-border: #cfd8e4;
  --faq-card-bg: #ffffff;
  --faq-ink-shadow: 6px 6px 0 0 rgba(11, 27, 58, 0.16);
}

.page-faq .grid--12 {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-faq .grid--main,
.page-faq .grid--side {
  grid-column: auto;
  min-width: 0;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* 页面首屏 */
.page-faq .page-hero {
  background: var(--c-space-950);
  padding: 32px 0 40px;
  position: relative;
  overflow: hidden;
}

.page-faq .page-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  top: 30px;
  width: 340px;
  height: 340px;
  background: repeating-linear-gradient(45deg, rgba(36, 209, 229, 0.22) 0 2px, transparent 2px 14px);
  transform: rotate(12deg);
  pointer-events: none;
}

.page-faq .page-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.page-faq .page-hero h1 {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  line-height: 1.2;
  color: var(--c-offwhite);
  margin: 10px 0 16px;
}

.page-faq .page-hero__desc {
  color: rgba(244, 246, 251, 0.85);
  font-size: var(--fs-body);
  line-height: 1.8;
  max-width: 640px;
  margin: 0;
}

.page-faq .page-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* 按钮 */
.page-faq .btn {
  display: inline-block;
  padding: 12px 20px;
  font-weight: 600;
  font-family: var(--font-body);
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .btn--primary {
  background: var(--c-orange);
  color: #ffffff;
  border-color: var(--c-orange);
  box-shadow: 4px 4px 0 0 rgba(11, 27, 58, 0.22);
}

.page-faq .btn--primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 0 rgba(11, 27, 58, 0.26);
}

.page-faq .btn--ghost {
  background: transparent;
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-faq .btn--ghost:hover {
  background: rgba(36, 209, 229, 0.08);
}

.page-faq .btn--outline {
  background: transparent;
  color: var(--c-ink);
  border-color: var(--c-ink);
  box-shadow: 3px 3px 0 0 rgba(11, 27, 58, 0.16);
}

.page-faq .btn--outline:hover {
  background: var(--c-space-950);
  color: var(--c-offwhite);
}

.page-faq .btn:focus-visible,
.page-faq .faq-nav__link:focus-visible,
.page-faq .faq-item__summary:focus-visible {
  outline: 3px solid var(--c-violet);
  outline-offset: 2px;
}

/* 面包屑 */
.page-faq .breadcrumb {
  color: rgba(244, 246, 251, 0.7);
  font-size: var(--fs-small);
  margin-bottom: 28px;
  font-family: var(--font-data);
}

.page-faq .breadcrumb a {
  color: var(--c-cyan);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  text-decoration: underline;
}

.page-faq .breadcrumb__sep {
  margin: 0 8px;
  color: rgba(244, 246, 251, 0.35);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--c-gold);
}

/* 浏览器内搜索提示 */
.page-faq .browser-search {
  margin-top: 28px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  background: var(--c-space-800);
  border: 1px solid var(--c-space-600);
  border-left: 3px solid var(--c-cyan);
  padding: 12px 16px;
  max-width: 640px;
}

.page-faq .browser-search__glyph {
  font-size: 20px;
  line-height: 1;
  color: var(--c-cyan);
}

.page-faq .browser-search__text {
  color: var(--c-offwhite);
  font-size: var(--fs-small);
  flex: 1;
}

/* 章节标题 */
.page-faq .section-head {
  margin-bottom: 32px;
}

.page-faq .section-title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  color: var(--c-ink);
  margin: 8px 0 8px;
}

.page-faq .section-desc {
  color: var(--c-slate);
  max-width: 640px;
  margin: 0;
}

.page-faq .eyebrow {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-orange);
  text-transform: uppercase;
  margin: 0;
}

/* 高频问题区 */
.page-faq .faq-section {
  background: var(--c-offwhite);
  padding: 48px 0;
}

.page-faq .faq-layout {
  align-items: start;
}

.page-faq .faq-nav__card {
  background: var(--faq-card-bg);
  border: 2px solid var(--c-ink);
  box-shadow: var(--faq-ink-shadow);
  padding: 20px 16px;
}

.page-faq .faq-nav__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  margin: 0 0 12px;
  border-bottom: 2px solid var(--c-ink);
  padding-bottom: 10px;
}

.page-faq .faq-nav__label {
  font-size: var(--fs-small);
  letter-spacing: 0.06em;
  color: var(--c-slate);
  margin: 18px 0 0;
  border-left: 3px solid var(--c-orange);
  padding-left: 8px;
  font-weight: 600;
}

.page-faq .faq-nav__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
}

.page-faq .faq-nav__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0 9px 8px;
  text-decoration: none;
  color: var(--c-ink);
  border-left: 3px solid transparent;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
  font-size: 14px;
  line-height: 1.5;
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  border-left-color: var(--c-gold);
  background: #fdf7e9;
}

.page-faq .faq-nav__num {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--c-orange);
  font-weight: 700;
  flex-shrink: 0;
}

.page-faq .faq-nav__foot {
  margin-top: 20px;
  border-top: 1px solid var(--c-gray);
  padding-top: 16px;
}

.page-faq .faq-nav__foot .btn {
  width: 100%;
  text-align: center;
}

/* 问答列表 */
.page-faq .faq-list {
  display: grid;
  gap: 16px;
}

.page-faq .faq-item {
  background: var(--faq-card-bg);
  border: 1.5px solid var(--c-ink);
  box-shadow: var(--shadow-1);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-item[open] {
  border-left: 4px solid var(--c-cyan);
  box-shadow: var(--shadow-2);
}

.page-faq .faq-item:target {
  outline: 3px solid var(--c-gold);
  outline-offset: 2px;
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
}

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

.page-faq .faq-item__num {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  color: #ffffff;
  background: var(--c-orange);
  padding: 3px 7px;
  flex-shrink: 0;
}

.page-faq .faq-item__text {
  font-weight: 600;
  color: var(--c-ink);
  flex: 1;
}

.page-faq .faq-item__chevron {
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--c-slate);
  border-bottom: 2px solid var(--c-slate);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease);
  flex-shrink: 0;
}

.page-faq .faq-item[open] .faq-item__chevron {
  transform: rotate(-135deg);
  margin-top: 4px;
}

.page-faq .faq-item__body {
  padding: 0 18px 20px 42px;
  border-top: 1px solid var(--c-gray);
}

.page-faq .faq-item[open] .faq-item__body {
  animation: pageFaqFadeIn 0.28s var(--ease);
}

@keyframes pageFaqFadeIn {
  from {
    opacity: 0.5;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-item__body p {
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--c-slate);
  margin: 12px 0 0;
}

.page-faq .faq-item__body ul {
  margin: 8px 0 0;
  padding-left: 20px;
  color: var(--c-slate);
  line-height: 1.7;
}

.page-faq .mini-steps {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--c-slate);
  line-height: 1.7;
}

.page-faq .mini-steps li {
  margin-bottom: 6px;
}

.page-faq .status-ok {
  color: var(--c-green);
  font-weight: 700;
}

/* 账号同步步骤 */
.page-faq .sync-section {
  background: var(--c-space-950);
  color: var(--c-offwhite);
  padding: 48px 0;
  position: relative;
  overflow: hidden;
}

.page-faq .sync-section::before {
  content: "02";
  font-family: var(--font-data);
  font-size: 180px;
  line-height: 1;
  color: rgba(36, 209, 229, 0.09);
  position: absolute;
  right: -10px;
  top: 40px;
  font-weight: 700;
  pointer-events: none;
}

.page-faq .sync-section .section-title {
  color: #ffffff;
}

.page-faq .sync-section .section-desc {
  color: rgba(244, 246, 251, 0.75);
}

.page-faq .sync-section .eyebrow {
  color: var(--c-cyan);
}

.page-faq .steps-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-faq .steps-list__item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  background: var(--c-space-800);
  border: 1px solid var(--c-space-600);
  padding: 18px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
  user-select: all;
}

.page-faq .steps-list__item:hover {
  transform: translateX(4px);
  border-color: var(--c-cyan);
}

.page-faq .steps-list__num {
  font-family: var(--font-data);
  font-size: 18px;
  font-weight: 700;
  height: 54px;
  width: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-orange);
  color: #ffffff;
  border: 2px solid #ffffff;
  box-shadow: 3px 3px 0 0 var(--c-cyan);
}

.page-faq .steps-list__item:hover .steps-list__num {
  background: var(--c-gold);
  color: var(--c-ink);
}

.page-faq .steps-list__content h3 {
  color: var(--c-gold);
  font-size: var(--fs-h3);
  margin: 0;
  font-family: var(--font-display);
}

.page-faq .steps-list__content p {
  color: rgba(244, 246, 251, 0.8);
  margin: 6px 0 0;
  font-size: var(--fs-body);
  line-height: 1.7;
}

.page-faq .sync-aside {
  margin-top: 8px;
}

.page-faq .sync-card {
  background: var(--c-space-800);
  border: 1px solid var(--c-space-600);
  padding: 24px 20px;
  box-shadow: var(--shadow-2);
}

.page-faq .sync-card__label {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: #ffffff;
  border-bottom: 1px solid var(--c-space-600);
  padding-bottom: 10px;
  margin: 0 0 12px;
}

.page-faq .sync-card ul {
  margin: 0 0 16px;
  padding-left: 18px;
  color: rgba(244, 246, 251, 0.85);
  font-size: var(--fs-body);
  line-height: 1.7;
}

.page-faq .sync-card li {
  margin-bottom: 8px;
}

.page-faq .sync-card__stats {
  color: rgba(244, 246, 251, 0.65);
  font-size: var(--fs-small);
  border-top: 1px solid var(--c-space-600);
  padding-top: 12px;
  margin: 0 0 16px;
}

.page-faq .sync-card__stats .mono {
  color: var(--c-gold);
}

.page-faq .copy-tip {
  margin-top: 16px;
  border: 1px dashed var(--c-cyan);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .copy-tip__label {
  color: var(--c-cyan);
  font-family: var(--font-data);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.page-faq .copy-tip__text {
  color: rgba(244, 246, 251, 0.7);
  font-size: var(--fs-small);
}

/* 本地测试版 */
.page-faq .local-section {
  background: var(--c-offwhite);
  padding: 48px 0;
}

.page-faq .prose h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: var(--c-ink);
  margin: 24px 0 8px;
}

.page-faq .prose h3:first-child {
  margin-top: 0;
}

.page-faq .prose p {
  color: var(--c-slate);
  line-height: 1.75;
  margin: 0 0 12px;
}

.page-faq .prose ul {
  margin: 0 0 12px;
  padding-left: 20px;
  color: var(--c-slate);
  line-height: 1.7;
}

.page-faq .local-card {
  background: #ffffff;
  border: 2px solid var(--c-ink);
  box-shadow: var(--shadow-2);
  padding: 20px;
  margin-top: 8px;
}

.page-faq .local-card dl {
  margin: 16px 0;
}

.page-faq .local-card dt {
  font-size: var(--fs-small);
  color: var(--c-slate);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-faq .local-card dd {
  font-size: var(--fs-body);
  color: var(--c-ink);
  font-weight: 600;
  margin: 2px 0 12px;
}

.page-faq .local-card__team {
  border-top: 1px solid var(--c-gray);
  padding-top: 12px;
  color: var(--c-slate);
  font-size: var(--fs-small);
  margin: 0 0 16px;
}

.page-faq .local-card .mono {
  color: var(--c-orange);
}

/* 首页导航说明 */
.page-faq .nav-guide-section {
  background: #edf1f8;
  padding: 48px 0;
}

.page-faq .nav-steps {
  list-style: none;
  margin: 24px 0;
  padding: 0;
}

.page-faq .nav-steps li {
  position: relative;
  padding: 12px 0 12px 52px;
  border-bottom: 1px solid var(--c-gray);
  font-size: var(--fs-body);
  color: var(--c-ink);
  line-height: 1.6;
}

.page-faq .nav-step__num {
  position: absolute;
  left: 0;
  top: 12px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-space-950);
  color: var(--c-gold);
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
}

.page-faq .guide-note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: #ffffff;
  border: 1px solid var(--c-gray);
  padding: 16px;
  margin-top: 8px;
}

.page-faq .guide-note p {
  margin: 0;
  font-size: var(--fs-small);
  color: var(--c-slate);
  line-height: 1.6;
}

.page-faq .phone-frame {
  margin: 8px 0 0;
}

.page-faq .phone-frame img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 2px solid var(--c-ink);
  box-shadow: 8px 8px 0 0 rgba(36, 209, 229, 0.25);
}

.page-faq .phone-frame figcaption {
  margin-top: 12px;
  font-size: var(--fs-small);
  color: var(--c-slate);
  border-left: 3px solid var(--c-cyan);
  padding-left: 10px;
  line-height: 1.6;
}

/* 流程总览 */
.page-faq .flow-section {
  background: var(--c-offwhite);
  padding: 48px 0;
}

.page-faq .flow-figure {
  margin: 32px 0 0;
}

.page-faq .flow-figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 2px solid var(--c-ink);
  box-shadow: var(--shadow-2);
}

.page-faq .flow-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-data);
  font-size: var(--fs-small);
  color: var(--c-slate);
}

.page-faq .flow-cta {
  margin-top: 32px;
  border-top: 3px solid var(--c-ink);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.page-faq .flow-cta__lead {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: var(--c-ink);
  margin: 0;
}

.page-faq .flow-cta__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* 桌面端 */
@media (min-width: 901px) {
  .page-faq .page-hero {
    padding: 56px 0 64px;
  }

  .page-faq .faq-section,
  .page-faq .local-section,
  .page-faq .nav-guide-section,
  .page-faq .flow-section,
  .page-faq .sync-section {
    padding: 72px 0;
  }

  .page-faq .grid--12 {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: 32px;
    row-gap: 40px;
  }

  .page-faq .grid--main {
    grid-column: span 8;
  }

  .page-faq .grid--side {
    grid-column: span 3;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 24px;
  }

  .page-faq .sync-aside {
    margin-top: 88px;
  }

  .page-faq .phone-frame {
    margin-top: 24px;
  }

  .page-faq .flow-figure img {
    max-height: 560px;
    object-fit: cover;
    object-position: center;
  }
}