/* ============================================================
   帮助中心 /faq/ · 页面专属样式
   全部选择器限定在 .page-faq 作用域内
   ============================================================ */

.page-faq {
  --faq-accent: #46F5A3;
  --faq-accent-rgb: 70, 245, 163;
  --faq-accent-ink: #05140D;
  --faq-narrow: 44rem;
  --faq-radius: 3px;
  position: relative;
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
  overflow-wrap: break-word;
}

/* ---------- 通用 ---------- */

.page-faq .faq-narrow {
  max-width: var(--faq-narrow);
  margin-inline: auto;
}

.page-faq .faq-sub {
  margin: 0.75rem 0 0;
  color: var(--mauve);
  font-size: 0.9375rem;
  line-height: 1.75;
  max-width: 36rem;
}

.page-faq .faq-inline-link {
  color: var(--faq-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(var(--faq-accent-rgb), 0.45);
  padding-bottom: 1px;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  border-color: var(--faq-accent);
}

.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--faq-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.page-faq .faq-cutline {
  border: 0;
  border-top: 1px dashed rgba(var(--faq-accent-rgb), 0.32);
  margin: 0;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: 1rem;
}

.page-faq .faq-frame {
  position: relative;
  padding: clamp(1.25rem, 4vw, 2.5rem);
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(var(--faq-accent-rgb), 0.10), transparent 62%),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
}

.page-faq .faq-frame::before {
  content: "";
  position: absolute;
  inset: 9px;
  pointer-events: none;
  background:
    linear-gradient(var(--faq-accent), var(--faq-accent)) left top / 16px 1px no-repeat,
    linear-gradient(var(--faq-accent), var(--faq-accent)) left top / 1px 16px no-repeat,
    linear-gradient(var(--faq-accent), var(--faq-accent)) right top / 16px 1px no-repeat,
    linear-gradient(var(--faq-accent), var(--faq-accent)) right top / 1px 16px no-repeat,
    linear-gradient(var(--faq-accent), var(--faq-accent)) left bottom / 16px 1px no-repeat,
    linear-gradient(var(--faq-accent), var(--faq-accent)) left bottom / 1px 16px no-repeat,
    linear-gradient(var(--faq-accent), var(--faq-accent)) right bottom / 16px 1px no-repeat,
    linear-gradient(var(--faq-accent), var(--faq-accent)) right bottom / 1px 16px no-repeat;
  opacity: 0.62;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 2rem;
}

.page-faq .faq-h1 {
  margin: 0.5rem 0 0;
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .faq-lede {
  margin: 1.25rem 0 0;
  max-width: 34rem;
  color: var(--mauve);
  font-size: 1rem;
  line-height: 1.85;
}

.page-faq .faq-hero-actions {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

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

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

.page-faq .faq-stats {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: clamp(1rem, 3vw, 1.5rem) 0 0;
  border-top: 1px dashed rgba(var(--faq-accent-rgb), 0.3);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(6.5rem, 1fr));
  gap: 1rem 1.25rem;
}

.page-faq .faq-stats li {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-faq .faq-stat-num {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  line-height: 1;
  color: var(--faq-accent);
}

.page-faq .faq-stat-label {
  font-size: 0.8125rem;
  color: var(--mauve);
  line-height: 1.5;
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 3rem;
    align-items: center;
  }
}

/* ---------- 四类问题入口 ---------- */

.page-faq .faq-cats {
  padding-top: clamp(2.5rem, 6vw, 4rem);
}

.page-faq .faq-drawers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-faq .faq-drawer {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 2rem 1.15rem 1.15rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  text-decoration: none;
  color: inherit;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-faq .faq-drawer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 1.15rem;
  width: 4rem;
  height: 3px;
  border-radius: 0 0 2px 2px;
  background: var(--faq-accent);
}

.page-faq .faq-drawer:hover,
.page-faq .faq-drawer:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(var(--faq-accent-rgb), 0.5);
  box-shadow: 0 12px 0 -6px rgba(var(--faq-accent-rgb), 0.22);
}

.page-faq .faq-drawer-no {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--faq-accent);
}

.page-faq .faq-drawer-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-drawer-desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mauve);
}

.page-faq .faq-drawer-list {
  list-style: none;
  margin: 0.4rem 0 0;
  padding: 0.75rem 0 0;
  border-top: 1px dashed rgba(var(--faq-accent-rgb), 0.22);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-drawer-list li {
  display: flex;
  gap: 0.5rem;
}

.page-faq .faq-drawer-list li::before {
  content: "";
  flex: 0 0 auto;
  width: 0.3rem;
  height: 0.3rem;
  margin-top: 0.5rem;
  border-radius: 50%;
  background: var(--faq-accent);
  opacity: 0.85;
}

.page-faq .faq-drawer-go {
  margin-top: auto;
  padding-top: 0.85rem;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--faq-accent);
}

@media (min-width: 640px) {
  .page-faq .faq-drawers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-drawers {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

/* ---------- 五步速查 ---------- */

.page-faq .faq-quick {
  padding-top: clamp(2.5rem, 6vw, 4rem);
}

.page-faq .faq-quick-grid {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  display: grid;
  gap: 2rem;
}

.page-faq .faq-quick-figure {
  margin: 0;
}

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

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.page-faq .faq-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.page-faq .faq-step-dot {
  flex: 0 0 auto;
  line-height: 0;
  color: var(--faq-accent);
}

.page-faq .faq-step-dot svg {
  display: block;
}

.page-faq .faq-step-title {
  margin: 0 0 0.3rem;
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-step-body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mauve);
  max-width: 34rem;
}

@media (min-width: 920px) {
  .page-faq .faq-quick-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 3rem;
    align-items: start;
  }
}

/* ---------- 问答手风琴 ---------- */

.page-faq .faq-answers {
  padding-top: clamp(2.5rem, 6vw, 4rem);
}

.page-faq .faq-group {
  margin-top: clamp(2rem, 5vw, 3rem);
  scroll-margin-top: 7rem;
}

.page-faq .faq-group-title {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0 0 0.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px dashed rgba(var(--faq-accent-rgb), 0.3);
  font-family: var(--font-heading);
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-group-title .mono {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--faq-accent);
}

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

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--faq-accent);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
}

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(var(--faq-accent-rgb), 0.06), transparent 42%);
}

.page-faq .faq-q {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 1.1rem 1rem 1.1rem 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-q::before {
  content: "";
  flex: 0 0 auto;
  width: 0.55rem;
  height: 0.55rem;
  margin-top: 0.5rem;
  border-right: 1.5px solid var(--faq-accent);
  border-bottom: 1.5px solid var(--faq-accent);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-q::before {
  transform: rotate(-135deg);
}

.page-faq .faq-q:hover {
  color: var(--faq-accent);
}

.page-faq .faq-a {
  padding: 0 1.25rem 1.35rem 2.4rem;
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mauve);
  max-width: 36rem;
}

/* ---------- 提交反馈 ---------- */

.page-faq .faq-send {
  padding-top: clamp(2.5rem, 6vw, 4rem);
}

.page-faq .faq-checklist {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-faq .faq-check {
  padding: 1.35rem 1.2rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  border-top: 2px solid rgba(var(--faq-accent-rgb), 0.55);
}

.page-faq .faq-check-no {
  display: block;
  margin-bottom: 0.55rem;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--faq-accent);
}

.page-faq .faq-check h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-check p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mauve);
}

.page-faq .faq-actions {
  margin-top: 1.85rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.page-faq .copy-status {
  font-size: 0.8125rem;
  color: var(--faq-accent);
  min-height: 1.2em;
}

@media (min-width: 760px) {
  .page-faq .faq-checklist {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

/* ---------- 处理节奏 ---------- */

.page-faq .faq-after {
  padding-top: clamp(2.5rem, 6vw, 4rem);
}

.page-faq .faq-beats {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0 0 0 1.6rem;
  border-left: 1px dashed rgba(var(--faq-accent-rgb), 0.35);
  max-width: 44rem;
}

.page-faq .faq-beat {
  position: relative;
  padding-bottom: 1.75rem;
}

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

.page-faq .faq-beat::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  left: calc(-1.6rem - 3.5px);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--faq-accent);
  box-shadow: 0 0 0 4px rgba(var(--faq-accent-rgb), 0.16);
}

.page-faq .faq-beat-when {
  display: inline-block;
  margin-bottom: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--faq-accent);
}

.page-faq .faq-beat p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mauve);
}

/* ---------- 页尾两张便签 ---------- */

.page-faq .faq-tail {
  padding-top: clamp(2.5rem, 6vw, 4rem);
}

.page-faq .faq-tail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-faq .faq-note {
  padding: clamp(1.35rem, 3.5vw, 1.85rem);
  background:
    linear-gradient(180deg, rgba(var(--faq-accent-rgb), 0.07), transparent 60%),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
}

.page-faq .faq-note h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-heading);
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-note p {
  margin: 0 0 0.7rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mauve);
}

.page-faq .faq-note p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-note-steps {
  list-style: none;
  margin: 0 0 0.85rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.page-faq .faq-note-steps li {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
}

.page-faq .faq-note-steps .mono {
  flex: 0 0 auto;
  padding-top: 0.3rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--faq-accent);
}

.page-faq .faq-note-steps p {
  margin: 0;
}

@media (min-width: 860px) {
  .page-faq .faq-tail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-drawer,
  .page-faq .faq-item::before,
  .page-faq .faq-q,
  .page-faq .faq-q::before,
  .page-faq .faq-inline-link {
    transition: none;
  }

  .page-faq .faq-drawer:hover,
  .page-faq .faq-drawer:focus-visible {
    transform: none;
  }
}