.page-faq {
  background: var(--yb-navy);
  color: var(--yb-cream);
}

.page-faq__wrap {
  padding-top: 24px;
  padding-bottom: 64px;
}

.page-faq .yb-breadcrumb {
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

/* ===== Hero 首屏 ===== */
.faq-hero {
  position: relative;
  padding: 44px 0 48px;
  border-bottom: 1px solid var(--yb-border);
  overflow: hidden;
}

.faq-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -40px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(57, 255, 20, 0.25);
  border-radius: 12px;
  transform: rotate(28deg) skewX(8deg);
  pointer-events: none;
}

.faq-hero::after {
  content: "";
  position: absolute;
  bottom: -30px;
  left: 22%;
  width: 160px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--yb-green), transparent);
  transform: rotate(-18deg);
  pointer-events: none;
}

.faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: end;
  position: relative;
  z-index: 1;
}

@media (min-width: 900px) {
  .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 48px;
  }
}

.faq-hero__kicker {
  font-family: var(--yb-font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--yb-green);
  text-transform: uppercase;
  margin: 0 0 12px;
}

.faq-hero h1 {
  font-family: var(--yb-font-display);
  font-size: clamp(52px, 9vw, 108px);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--yb-cream);
  margin: 0 0 18px;
}

.faq-hero__lead {
  font-family: var(--yb-font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--yb-fog);
  margin: 0;
  max-width: 44em;
}

.faq-hero__quick {
  background: var(--yb-glass);
  border: 1px solid var(--yb-border);
  padding: 20px;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.faq-hero__quick-label {
  font-family: var(--yb-font-display);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--yb-fog);
  margin: 0 0 16px;
}

.faq-hero__quick-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.faq-quick-btn {
  display: inline-block;
  font-family: var(--yb-font-display);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--yb-cream);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--yb-border);
  padding: 9px 16px;
  text-decoration: none;
  transition: border-color var(--yb-speed) var(--yb-ease), color var(--yb-speed) var(--yb-ease), background var(--yb-speed) var(--yb-ease);
}

.faq-quick-btn:hover,
.faq-quick-btn:focus-visible {
  border-color: var(--yb-green);
  color: var(--yb-green);
  background: rgba(57, 255, 20, 0.08);
}

.faq-quick-btn--hot {
  border-color: var(--yb-orange);
  color: var(--yb-orange);
}

.faq-quick-btn--hot:hover,
.faq-quick-btn--hot:focus-visible {
  border-color: var(--yb-orange);
  color: var(--yb-orange);
  background: rgba(255, 77, 0, 0.14);
}

/* ===== 问答两栏布局 ===== */
.faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: 32px;
}

@media (min-width: 1024px) {
  .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 48px;
    padding-top: 48px;
    align-items: start;
  }
}

/* 左侧问题索引 */
.faq-index {
  background: var(--yb-glass);
  border: 1px solid var(--yb-border);
  border-left: 3px solid var(--yb-green);
  padding: 18px 20px;
}

@media (min-width: 1024px) {
  .faq-index {
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 120px);
    overflow: auto;
  }
}

.faq-index__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 12px;
  margin-bottom: 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.faq-index__code {
  font-family: var(--yb-font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--yb-green);
}

.faq-index__count {
  font-family: var(--yb-font-body);
  font-size: 12px;
  color: var(--yb-fog);
}

.faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.faq-index__item + .faq-index__item {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.faq-index__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 4px;
  font-family: var(--yb-font-body);
  font-size: 14px;
  line-height: 1.4;
  color: var(--yb-cream);
  text-decoration: none;
  transition: color var(--yb-speed) var(--yb-ease), padding-left var(--yb-speed) var(--yb-ease);
}

.faq-index__link:hover,
.faq-index__link:focus-visible {
  color: var(--yb-green);
  padding-left: 10px;
}

.faq-index__no {
  font-family: var(--yb-font-display);
  font-size: 12px;
  color: var(--yb-fog);
  min-width: 26px;
}

.faq-index__link:hover .faq-index__no,
.faq-index__link:focus-visible .faq-index__no {
  color: var(--yb-green);
}

/* 右侧答案区 */
.faq-answers {
  display: grid;
  gap: 44px;
  min-width: 0;
}

.faq-block {
  scroll-margin-top: 96px;
}

.faq-block__head {
  position: relative;
  padding-left: 18px;
  margin-bottom: 20px;
}

.faq-block__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 7px;
  height: calc(100% - 4px);
  background: var(--yb-orange);
  clip-path: polygon(0 0, 100% 0, 55% 100%, 0 100%);
}

.faq-block__head h2 {
  font-family: var(--yb-font-display);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--yb-cream);
  margin: 0 0 4px;
}

.faq-block__head p {
  font-family: var(--yb-font-body);
  font-size: 14px;
  color: var(--yb-fog);
  margin: 0;
}

/* 快速上手步骤 */
.faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

@media (min-width: 640px) {
  .faq-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.faq-step {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--yb-border);
  padding: 18px 16px;
  position: relative;
  transition: border-color var(--yb-speed) var(--yb-ease), background var(--yb-speed) var(--yb-ease);
}

.faq-step:hover {
  border-color: rgba(57, 255, 20, 0.5);
  background: rgba(57, 255, 20, 0.05);
}

.faq-step__no {
  display: block;
  font-family: var(--yb-font-display);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  color: var(--yb-green);
  margin-bottom: 10px;
}

.faq-step h3 {
  font-family: var(--yb-font-display);
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--yb-cream);
  margin: 0 0 6px;
}

.faq-step p {
  font-family: var(--yb-font-body);
  font-size: 13px;
  line-height: 1.65;
  color: var(--yb-fog);
  margin: 0;
}

/* 页面图片 */
.faq-guide-img {
  display: block;
  width: 100%;
  max-width: 800px;
  height: auto;
  border: 1px solid var(--yb-border);
  margin-bottom: 28px;
  filter: grayscale(1) contrast(1.06);
  transition: filter var(--yb-speed-fast) var(--yb-ease);
}

.faq-guide-img:hover {
  filter: grayscale(0) contrast(1);
}

.faq-export-img {
  display: block;
  width: 100%;
  max-width: 600px;
  height: auto;
  border: 1px solid var(--yb-border);
  margin: 16px 0 4px;
  filter: grayscale(1) contrast(1.06);
  transition: filter var(--yb-speed-fast) var(--yb-ease);
}

.faq-export-img:hover {
  filter: grayscale(0) contrast(1);
}

/* 问答卡片 */
.faq-card {
  position: relative;
  background: var(--yb-cream);
  color: var(--yb-ink);
  padding: 20px 22px;
  margin-bottom: 16px;
  border-left: 4px solid transparent;
  scroll-margin-top: 96px;
  transition: border-color var(--yb-speed) var(--yb-ease), box-shadow var(--yb-speed) var(--yb-ease);
}

@media (min-width: 640px) {
  .faq-card {
    padding: 24px 28px;
  }
}

.faq-card:target {
  border-left-color: var(--yb-green);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.2);
}

.faq-card__no {
  font-family: var(--yb-font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--yb-orange);
  margin: 0 0 8px;
}

.faq-card h3 {
  font-family: var(--yb-font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--yb-ink);
  margin: 0 0 10px;
  letter-spacing: 0.02em;
}

.faq-card__a {
  font-family: var(--yb-font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--yb-ink);
  margin: 0;
}

.faq-card__a a {
  color: var(--yb-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.faq-card__a a:hover,
.faq-card__a a:focus-visible {
  color: var(--yb-ink);
  background: rgba(255, 77, 0, 0.12);
}

.faq-path-line {
  margin: 10px 0 0;
  font-family: var(--yb-font-body);
  font-size: 13px;
  color: rgba(16, 24, 32, 0.7);
}

.faq-inline-code {
  font-family: ui-monospace, "SF Mono", "Menlo", monospace;
  font-size: 13px;
  background: rgba(16, 24, 32, 0.08);
  color: var(--yb-ink);
  padding: 2px 6px;
  border: 1px solid rgba(16, 24, 32, 0.12);
}

/* 联系支持面板 */
.faq-contact-panel {
  display: grid;
  gap: 24px;
  margin-top: 24px;
  padding: 24px;
  background: var(--yb-glass);
  border: 1px solid var(--yb-border);
}

@media (min-width: 768px) {
  .faq-contact-panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
    align-items: center;
  }
}

.faq-contact-panel__main h3 {
  font-family: var(--yb-font-display);
  font-size: 22px;
  letter-spacing: 0.05em;
  color: var(--yb-cream);
  margin: 0 0 8px;
}

.faq-contact-panel__main p {
  font-family: var(--yb-font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--yb-fog);
  margin: 0 0 16px;
}

.faq-contact-panel__list {
  margin: 0;
  padding: 0;
}

.faq-contact-panel__list > div {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--yb-border);
}

.faq-contact-panel__list > div:last-child {
  border-bottom: 0;
}

.faq-contact-panel__list dt {
  font-family: var(--yb-font-display);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--yb-green);
}

.faq-contact-panel__list dd {
  font-family: var(--yb-font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--yb-cream);
  margin: 0;
  word-break: break-word;
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}