/* ===== 帮助中心 · 手册式页面 ===== */

.page-faq {
  font-family: var(--yb-font);
  color: var(--yb-ink);
  background: var(--yb-surface);
  --faq-dash: 13px;
}

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

.page-faq ul,
.page-faq ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ---------- 首屏：深蓝渐变 + 网格纹理 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 52px;
  background:
    radial-gradient(circle at 84% 14%, rgba(14, 158, 143, 0.30), transparent 44%),
    radial-gradient(circle at 10% 92%, rgba(108, 76, 241, 0.22), transparent 48%),
    linear-gradient(155deg, var(--yb-deep) 0%, var(--yb-blue) 62%, #1d5bab 100%);
  color: var(--yb-white);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
}

.page-faq .faq-hero .yb-shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__crumb {
  margin-bottom: var(--yb-gap-2);
  color: rgba(255, 255, 255, 0.66);
  font-size: 13px;
}

.page-faq .faq-hero__crumb a {
  color: var(--yb-white);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.42);
}

.page-faq .faq-hero__crumb a:hover {
  border-bottom-color: var(--yb-white);
}

.page-faq .faq-hero__crumb > span {
  margin: 0 8px;
}

.page-faq .faq-hero__eyebrow {
  display: inline-block;
  margin: 0 0 16px;
  padding: 6px 14px;
  border-radius: var(--yb-r-pill);
  background: rgba(14, 158, 143, 0.22);
  border: 1px solid rgba(14, 158, 143, 0.52);
  color: #a9efe5;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-faq .faq-hero__title {
  margin: 0 0 var(--yb-gap-1);
  max-width: 17em;
  font-size: clamp(30px, 5.4vw, 56px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--yb-white);
}

.page-faq .faq-hero__lead {
  margin: 0 0 var(--yb-gap-3);
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.86);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border-radius: var(--yb-r-sm);
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
}

.page-faq .faq-stat__num {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--yb-white);
}

.page-faq .faq-stat__label {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.74);
}

/* ---------- 通用区块间距 ---------- */

.page-faq .faq-identity,
.page-faq .faq-restore,
.page-faq .faq-lookup,
.page-faq .faq-ask {
  padding: 48px 0;
}

.page-faq .faq-identity h2,
.page-faq .faq-restore h2,
.page-faq .faq-lookup h2,
.page-faq .faq-ask h2,
.page-faq .faq-support h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--yb-deep);
}

/* ---------- 身份分流 ---------- */

.page-faq .faq-identity {
  background: var(--yb-white);
  border-bottom: 1px solid var(--yb-line);
}

.page-faq .faq-identity__head {
  max-width: 46em;
}

.page-faq .faq-identity__filter,
.page-faq .faq-ask__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: var(--yb-gap-1) 0 var(--yb-gap-2);
}

.page-faq .yb-filter__btn[aria-pressed="true"],
.page-faq .yb-filter__btn.is-active {
  background: var(--yb-blue);
  border-color: var(--yb-blue);
  color: var(--yb-white);
}

.page-faq .faq-paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--yb-gap-1);
}

.page-faq .faq-path {
  position: relative;
  overflow: hidden;
  padding: 26px 24px 22px 28px;
  border: 1px solid var(--yb-line);
  border-radius: var(--yb-r-lg);
  background: var(--yb-white);
  box-shadow: var(--yb-shadow-line);
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-path::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
}

.page-faq .faq-path--new::before {
  background: var(--yb-orange);
}

.page-faq .faq-path--return::before {
  background: var(--yb-teal);
}

.page-faq .faq-path--return {
  background: var(--yb-teal-soft);
  border-color: rgba(14, 158, 143, 0.28);
}

.page-faq .faq-path h3 {
  margin: 14px 0 4px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--yb-deep);
}

.page-faq .faq-path__list {
  display: grid;
  gap: 12px;
  margin: 16px 0 18px;
  counter-reset: faqpath;
}

.page-faq .faq-path__list li {
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--yb-muted);
}

.page-faq .faq-path__list li::before {
  counter-increment: faqpath;
  content: counter(faqpath);
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--yb-blue);
  color: var(--yb-white);
  font-size: 11px;
  font-weight: 700;
}

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

/* ---------- 三步找回 ---------- */

.page-faq .faq-restore {
  background: var(--yb-ice);
}

.page-faq .faq-restore__head {
  max-width: 46em;
}

.page-faq .faq-restore__figure {
  position: relative;
  margin: var(--yb-gap-2) 0 var(--yb-gap-3);
  border-radius: var(--yb-r-lg);
  overflow: hidden;
  box-shadow: var(--yb-shadow-soft);
  background: var(--yb-white);
}

.page-faq .faq-restore__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-restore__figure figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  max-width: calc(100% - 32px);
  padding: 8px 14px;
  border-radius: var(--yb-r-pill);
  background: rgba(16, 24, 40, 0.72);
  color: var(--yb-white);
  font-size: 13px;
  line-height: 1.5;
  backdrop-filter: blur(6px);
}

.page-faq .faq-steps {
  display: grid;
  gap: 0;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding-bottom: var(--yb-gap-2);
}

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

.page-faq .faq-step__marker {
  position: relative;
  line-height: 1;
}

.page-faq .faq-step__num {
  display: block;
  font-size: clamp(56px, 12vw, 104px);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.05em;
  font-variant-numeric: tabular-nums;
  color: var(--yb-blue);
}

.page-faq .faq-step__body h3 {
  margin: 0 0 8px;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--yb-deep);
}

.page-faq .faq-step__body p {
  margin: 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--yb-muted);
}

/* ---------- 栏目查询 ---------- */

.page-faq .faq-lookup {
  background: var(--yb-white);
}

.page-faq .faq-lookup__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--yb-gap-2);
}

.page-faq .faq-lookup__main {
  max-width: 46em;
}

.page-faq .faq-lookup__ways {
  display: grid;
  gap: var(--yb-gap-1);
  margin: var(--yb-gap-2) 0 var(--yb-gap-1);
}

.page-faq .faq-way {
  padding: 22px;
  border-radius: var(--yb-r-sm);
  background: var(--yb-ice);
  border: 1px solid rgba(27, 75, 143, 0.12);
  border-top: 3px solid var(--yb-blue);
}

.page-faq .faq-way:nth-child(2) {
  background: var(--yb-teal-soft);
  border-color: rgba(14, 158, 143, 0.2);
  border-top-color: var(--yb-teal);
}

.page-faq .faq-way h3 {
  margin: 12px 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--yb-deep);
}

.page-faq .faq-way p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--yb-muted);
}

.page-faq .faq-lookup__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--yb-muted);
  padding-left: 14px;
  border-left: 3px solid var(--yb-teal);
}

.page-faq .faq-quicklook {
  padding: 24px;
  border-radius: var(--yb-r-lg);
  background: rgba(234, 242, 253, 0.72);
  border: 1px solid rgba(27, 75, 143, 0.16);
  box-shadow: var(--yb-shadow-soft);
  backdrop-filter: blur(14px) saturate(140%);
}

.page-faq .faq-quicklook__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--yb-blue);
}

.page-faq .faq-quicklook__list li {
  border-bottom: 1px dashed rgba(27, 75, 143, 0.18);
}

.page-faq .faq-quicklook__list li:last-child {
  border-bottom: 0;
}

.page-faq .faq-quicklook__list a {
  display: block;
  padding: 14px 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--yb-blue);
  text-decoration: none;
}

.page-faq .faq-quicklook__list a:hover {
  color: var(--yb-bright);
  text-decoration: underline;
}

.page-faq .faq-quicklook__list span {
  display: block;
  padding-bottom: 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--yb-muted);
}

/* ---------- 分组问答 ---------- */

.page-faq .faq-ask {
  background: var(--yb-surface);
}

.page-faq .faq-ask__head {
  display: grid;
  gap: var(--yb-gap-2);
  align-items: center;
  margin-bottom: var(--yb-gap-1);
}

.page-faq .faq-ask__figure {
  margin: 0;
  border-radius: var(--yb-r-lg);
  overflow: hidden;
  box-shadow: var(--yb-shadow-soft);
  background: var(--yb-white);
}

.page-faq .faq-ask__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--yb-gap-1);
}

.page-faq .faq-group {
  padding: 8px 22px 14px;
  border-radius: var(--yb-r-lg);
  background: var(--yb-white);
  border: 1px solid var(--yb-line);
  box-shadow: var(--yb-shadow-line);
}

.page-faq .faq-group__title {
  margin: 16px 0 4px;
  padding-left: 12px;
  border-left: 4px solid var(--yb-teal);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--yb-deep);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--yb-line);
}

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

.page-faq .faq-item > summary {
  position: relative;
  padding: 16px 34px 16px 0;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--yb-ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 22px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--yb-teal);
  border-bottom: 2px solid var(--yb-teal);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.page-faq .faq-item[open] > summary {
  color: var(--yb-blue);
}

.page-faq .faq-item[open] > summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-item__body {
  padding: 0 8px 18px 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--yb-muted);
}

.page-faq .faq-item__body p {
  margin: 0;
}

/* ---------- 人工支持 ---------- */

.page-faq .faq-support {
  padding: 48px 0;
  background: linear-gradient(140deg, var(--yb-deep) 0%, var(--yb-blue) 100%);
  color: var(--yb-white);
}

.page-faq .faq-support .yb-eyebrow {
  color: #7fd8cd;
}

.page-faq .faq-support h2 {
  color: var(--yb-white);
}

.page-faq .faq-support .yb-copy {
  color: rgba(255, 255, 255, 0.78);
}

.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--yb-gap-2);
}

.page-faq .faq-prepare {
  display: grid;
  gap: 10px;
  margin: var(--yb-gap-1) 0 var(--yb-gap-2);
}

.page-faq .faq-prepare li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.84);
}

.page-faq .faq-prepare li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--yb-orange);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.page-faq .faq-support__actions .yb-btn--primary {
  background: var(--yb-orange);
  border-color: var(--yb-orange);
  color: var(--yb-white);
}

.page-faq .faq-support__actions .yb-btn--ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: var(--yb-white);
}

.page-faq .faq-support__actions .yb-btn--ghost:hover {
  border-color: var(--yb-white);
  background: rgba(255, 255, 255, 0.08);
}

.page-faq .faq-contact {
  padding: 24px;
  border-radius: var(--yb-r-lg);
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(12px);
  color: var(--yb-white);
}

.page-faq .faq-contact h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--yb-white);
}

.page-faq .faq-contact__list {
  margin: 18px 0;
}

.page-faq .faq-contact__list dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.6);
}

.page-faq .faq-contact__list dd {
  margin: 4px 0 14px;
  font-size: 17px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  word-break: break-all;
  color: var(--yb-white);
}

.page-faq .faq-contact__list div:last-child dd {
  margin-bottom: 0;
}

.page-faq .faq-contact__note {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.66);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--yb-gap-1);
  }

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

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 56px 0 72px;
  }

  .page-faq .faq-identity,
  .page-faq .faq-restore,
  .page-faq .faq-lookup,
  .page-faq .faq-ask {
    padding: 64px 0;
  }

  .page-faq .faq-support {
    padding: 72px 0;
  }

  .page-faq .faq-step {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: var(--yb-gap-2);
    align-items: start;
    padding-bottom: var(--yb-gap-3);
  }

  .page-faq .faq-step__marker::after {
    content: "";
    position: absolute;
    left: 26px;
    top: calc(100% + 8px);
    height: calc(var(--yb-gap-3) - 16px);
    width: 2px;
    background-image: linear-gradient(to bottom, var(--yb-teal) 0 6px, transparent 6px 13px);
    background-size: 2px 13px;
    background-repeat: repeat-y;
  }

  .page-faq .faq-step:last-child .faq-step__marker::after {
    display: none;
  }

  .page-faq .faq-steps {
    padding-left: 8px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-paths {
    grid-template-columns: 1.15fr 1fr;
    gap: var(--yb-gap-2);
  }

  .page-faq .faq-ask__head {
    grid-template-columns: 1.45fr 1fr;
    gap: var(--yb-gap-3);
  }

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

  .page-faq .faq-support__grid {
    grid-template-columns: 1.5fr 1fr;
    gap: var(--yb-gap-3);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-lookup__grid {
    grid-template-columns: 1.55fr 1fr;
    gap: var(--yb-gap-3);
    align-items: start;
  }

  .page-faq .faq-quicklook {
    position: sticky;
    top: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-path,
  .page-faq .faq-item > summary::after {
    transition: none;
  }
}