/* ===== 帮助中心 · page-faq ===== */

.page-faq {
  --faq-line: var(--sand);
  --faq-gap: clamp(20px, 3.6vw, 44px);
  background: var(--paper);
  color: var(--ink);
}

/* --- 面包屑 --- */
.page-faq .faq-crumbs {
  padding-top: clamp(20px, 3vw, 34px);
  padding-bottom: clamp(8px, 1.4vw, 14px);
}

/* --- 首屏 --- */
.page-faq .faq-hero {
  position: relative;
  padding-bottom: clamp(34px, 5vw, 60px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -46%;
  width: min(120vw, 1100px);
  height: min(72vw, 620px);
  transform: translateX(-58%);
  background:
    radial-gradient(58% 62% at 30% 42%, rgba(255, 122, 47, 0.16), transparent 68%),
    radial-gradient(48% 54% at 78% 18%, rgba(31, 99, 255, 0.10), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero > * {
  position: relative;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  margin-top: clamp(10px, 1.6vw, 18px);
}

.page-faq .faq-hero__title {
  max-width: 15ch;
  margin: 0;
}

.page-faq .faq-hero__aside .lead {
  margin: 0;
  max-width: 46ch;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 4vw, 56px);
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: clamp(16px, 2vw, 22px) 0 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-faq .faq-hero__stats .mono {
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  font-weight: 700;
  line-height: 1;
  color: var(--deep);
}

.page-faq .faq-hero__stats li span:last-child {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--sage);
}

/* --- 章节标题 --- */
.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-head__num {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .faq-head__title {
  margin: 0;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-faq .faq-head__note {
  grid-column: 2;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--sage);
}

/* --- 三步开始使用 --- */
.page-faq .faq-start {
  padding-top: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(24px, 4vw, 44px);
}

.page-faq .faq-shot {
  margin: 0 0 clamp(24px, 3.6vw, 38px);
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  background: var(--warm-soft);
}

.page-faq .faq-shot__cap {
  margin-top: 10px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--sage);
}

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

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: clamp(14px, 2vw, 20px);
  padding: clamp(18px, 2.6vw, 24px) 0;
  border-top: 1px solid var(--faq-line);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-step:last-child {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-step__num {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--warm-soft);
  color: var(--deep);
  font-size: 0.88rem;
  font-weight: 700;
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-size: clamp(1.02rem, 1.5vw, 1.16rem);
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-step__body p {
  margin: 0 0 8px;
  font-size: 0.95rem;
  line-height: 1.78;
  max-width: 62ch;
}

.page-faq .faq-step__time {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--coral-deep);
}

.page-faq .faq-steps__foot {
  margin-top: clamp(20px, 3vw, 28px);
}

/* --- 主体双栏 --- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  padding-top: clamp(28px, 4.4vw, 52px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* --- 粘性主题索引 --- */
.page-faq .faq-index__figure {
  margin: 0 0 18px;
}

.page-faq .faq-index__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
  background: var(--warm-soft);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  color: var(--sage);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
  line-height: 1.4;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-index__list a .mono {
  font-size: 0.72rem;
  color: var(--sage);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--mint);
  border-left-color: var(--orange);
  color: var(--deep);
}

.page-faq .faq-index__list a:hover .mono,
.page-faq .faq-index__list a:focus-visible .mono {
  color: var(--orange);
}

.page-faq .faq-index__list a:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}

.page-faq .faq-index__tip {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line);
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--sage);
}

/* --- 问答分组 --- */
.page-faq .faq-block + .faq-block {
  margin-top: clamp(40px, 6vw, 72px);
}

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

.page-faq .qa:last-of-type {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: clamp(14px, 2vw, 18px) 12px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--r-sm);
  transition: background var(--dur) var(--ease);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover {
  background: var(--mist);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .qa[open] > .qa__q {
  background: var(--mint);
}

.page-faq .qa__num {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .qa__text {
  font-size: clamp(0.98rem, 1.5vw, 1.08rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .qa__mark {
  position: relative;
  width: 14px;
  height: 14px;
  align-self: center;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--deep);
  transform: translate(-50%, -50%);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .qa__mark::before {
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::before {
  background: var(--orange);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa__a {
  padding: 2px 12px clamp(16px, 2.4vw, 22px) calc(12px + 2.6em + 12px);
  font-size: 0.95rem;
  line-height: 1.8;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: 64ch;
}

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

/* --- 正文链接 --- */
.page-faq .faq-link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-link:hover {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

.page-faq .faq-link:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* --- 联系支持 --- */
.page-faq .faq-support__panel {
  background: var(--deep);
  color: var(--paper);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3.6vw, 44px);
}

.page-faq .faq-support__panel .faq-head {
  border-bottom-color: rgba(250, 245, 239, 0.22);
}

.page-faq .faq-support__panel .faq-head__title {
  color: var(--paper);
}

.page-faq .faq-support__panel .faq-head__note {
  color: rgba(250, 245, 239, 0.68);
}

.page-faq .faq-support__lead {
  margin: 0 0 clamp(20px, 3vw, 28px);
  max-width: 58ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: rgba(250, 245, 239, 0.88);
}

.page-faq .faq-support__panel .faq-link {
  color: var(--paper);
  border-bottom-color: rgba(250, 245, 239, 0.45);
}

.page-faq .faq-support__panel .faq-link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-faq .faq-copy {
  display: grid;
  gap: 10px;
  max-width: 520px;
}

.page-faq .faq-copy__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 12px 14px;
  border: 1px solid rgba(250, 245, 239, 0.22);
  border-radius: var(--r-md);
  background: rgba(250, 245, 239, 0.05);
}

.page-faq .faq-copy__label {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--sand);
  flex: 0 0 auto;
}

.page-faq .faq-copy__value {
  flex: 1 1 180px;
  min-width: 0;
  font-size: 0.94rem;
  word-break: break-all;
  color: var(--paper);
}

.page-faq .faq-support__status {
  margin: 12px 0 0;
  min-height: 0;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-faq .faq-support__foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(250, 245, 239, 0.18);
  font-size: 0.82rem;
  color: rgba(250, 245, 239, 0.7);
}

/* --- 复制按钮 --- */
.page-faq .copybtn {
  font: inherit;
  font-size: 0.8rem;
  line-height: 1;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--faq-line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .copybtn:hover {
  background: var(--mint);
  border-color: var(--deep);
}

.page-faq .copybtn:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .copybtn.is-done {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

.page-faq .faq-support__panel .copybtn {
  border-color: rgba(250, 245, 239, 0.4);
  color: var(--paper);
  padding: 7px 14px;
}

.page-faq .faq-support__panel .copybtn:hover {
  background: rgba(250, 245, 239, 0.14);
  border-color: var(--orange);
}

.page-faq .faq-support__panel .copybtn.is-done {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

/* --- 显现 --- */
.js .page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.js .page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ===== 响应式 ===== */

@media (min-width: 720px) {
  .page-faq .faq-step:nth-child(2) {
    padding-left: clamp(18px, 5vw, 64px);
  }

  .page-faq .faq-step:nth-child(3) {
    padding-left: clamp(8px, 2.4vw, 28px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    column-gap: clamp(24px, 4vw, 64px);
  }

  .page-faq .faq-hero__aside {
    padding-bottom: 6px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    max-height: calc(100vh - 128px);
    overflow-y: auto;
    padding-right: 4px;
  }

  .page-faq .faq-body {
    max-width: 760px;
  }
}

@media (max-width: 719px) {
  .page-faq .qa__q {
    grid-template-columns: 2.4em minmax(0, 1fr) auto;
    gap: 10px;
  }

  .page-faq .qa__a {
    padding-left: 12px;
  }

  .page-faq .faq-hero::before {
    top: -30%;
    height: 420px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
  }

  .js .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
  }
}