/* ============================================================
   帮助中心 / page-faq
   ============================================================ */

.page-faq {
  --faq-rule: var(--line-600);
  --faq-panel: var(--ink-green-800);
  --faq-anchor-offset: 120px;
}

/* ---------- 首屏 ---------- */
.page-faq .help-hero {
  padding-block: clamp(18px, 3vw, 32px) clamp(30px, 5vw, 60px);
  border-bottom: var(--bw) solid var(--faq-rule);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(201, 242, 74, 0.10), transparent 55%),
    var(--faq-panel);
}

.page-faq .help-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(16px, 2.6vw, 28px);
}

@media (min-width: 900px) {
  .page-faq .help-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
  }
}

.page-faq .help-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(40px, 7.4vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--paper-050);
}

.page-faq .help-hero__lead {
  max-width: 58ch;
  margin-top: 18px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--paper-050);
  opacity: 0.87;
}

.page-faq .help-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .help-figures {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(24px, 3.4vw, 38px);
  border: var(--bw) solid var(--faq-rule);
  background: var(--faq-rule);
}

.page-faq .help-figure {
  background: var(--ink-green-900);
  padding: 13px 12px 15px;
}

.page-faq .help-figure__num {
  display: block;
  font-family: var(--font-data);
  font-weight: 800;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1;
  color: var(--lime-500);
}

.page-faq .help-figure__label {
  display: block;
  margin-top: 8px;
  font-size: 11.5px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--mist-400);
}

.page-faq .help-hero__media {
  margin: 0;
}

.page-faq .media-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 主体骨架 ---------- */
.page-faq .help-body {
  padding-block: clamp(30px, 5vw, 68px) clamp(48px, 7vw, 96px);
}

.page-faq .help-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 44px);
}

@media (min-width: 1000px) {
  .page-faq .help-layout {
    grid-template-columns: minmax(200px, 23%) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 76px);
  }
}

/* ---------- 左侧问题目录 ---------- */
.page-faq .help-toc {
  border-top: var(--bw-3) solid var(--lime-500);
  padding-top: 16px;
}

@media (min-width: 1000px) {
  .page-faq .help-toc {
    position: sticky;
    top: 108px;
    align-self: start;
  }
}

.page-faq .help-toc__title {
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist-400);
}

.page-faq .help-toc__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 4px;
  display: flex;
  flex-direction: row;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .help-toc__item {
  flex: 0 0 auto;
}

@media (min-width: 1000px) {
  .page-faq .help-toc__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .help-toc__item {
    flex: 1 1 auto;
  }
}

.page-faq .help-toc__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 10px;
  border-left: var(--bw-3) solid transparent;
  color: var(--paper-050);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  transition:
    border-color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease);
}

@media (min-width: 1000px) {
  .page-faq .help-toc__link {
    white-space: normal;
  }
}

.page-faq .help-toc__num {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}

.page-faq .help-toc__link:hover,
.page-faq .help-toc__link:focus-visible {
  border-left-color: var(--lime-500);
  background: rgba(201, 242, 74, 0.09);
  color: var(--lime-500);
}

.page-faq .help-toc__link:focus-visible {
  outline: var(--bw) solid var(--lime-500);
  outline-offset: 2px;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding-block: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--faq-rule);
  scroll-margin-top: var(--faq-anchor-offset);
}

.page-faq .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-section__head {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-faq .faq-section__num {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 9px 4px;
  border: var(--bw) solid var(--faq-rule);
  font-family: var(--font-data);
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.18em;
  color: var(--lime-500);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-section:target .faq-section__num {
  background: var(--lime-500);
  border-color: var(--lime-500);
  color: var(--ink-green-900);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper-050);
}

.page-faq .faq-section__lead {
  max-width: 62ch;
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist-400);
}

/* ---------- 三步路径 ---------- */
.page-faq .paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 760px) {
  .page-faq .paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 44px;
  }
}

.page-faq .path {
  position: relative;
  padding: 20px 18px 22px;
  border: var(--bw) solid var(--faq-rule);
  background: var(--faq-panel);
  transition:
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

@media (min-width: 760px) {
  .page-faq .path + .path::before {
    content: "→";
    position: absolute;
    left: -36px;
    top: 24px;
    width: 28px;
    text-align: center;
    font-family: var(--font-data);
    font-weight: 800;
    font-size: 20px;
    line-height: 1;
    color: var(--lime-500);
  }
}

.page-faq .path:hover,
.page-faq .path:focus-within {
  border-color: var(--lime-500);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .path__tag {
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ember-500);
}

.page-faq .path__title {
  margin: 9px 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.34;
  color: var(--paper-050);
}

.page-faq .path__steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-faq .path__steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.66;
  color: var(--paper-050);
  opacity: 0.88;
}

.page-faq .path__steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1.6;
  color: var(--lime-500);
}

.page-faq .path__steps a,
.page-faq .qa__a a {
  color: var(--lime-500);
  text-underline-offset: 3px;
}

/* ---------- 问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-rule);
}

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

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.46;
  color: var(--paper-050);
  transition: color var(--dur-fast) var(--ease);
}

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

.page-faq .qa__q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 18px;
  line-height: 1;
  color: var(--lime-500);
}

.page-faq .qa[open] > .qa__q::after {
  content: "–";
}

.page-faq .qa__q:hover {
  color: var(--lime-500);
}

.page-faq .qa__q:focus-visible {
  outline: var(--bw) solid var(--lime-500);
  outline-offset: 3px;
}

.page-faq .qa__a {
  max-width: 68ch;
  padding: 0 0 20px;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--paper-050);
  opacity: 0.86;
}

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

.page-faq .qa__a p + p {
  margin-top: 10px;
}

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

.page-faq .qa__a li {
  position: relative;
  padding-left: 18px;
  margin-top: 8px;
  line-height: 1.72;
}

.page-faq .qa__a li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.66em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ember-500);
}

/* ---------- 数据阅读：文字 + 配图 ---------- */
.page-faq .data-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 34px);
}

@media (min-width: 1080px) {
  .page-faq .data-split {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: clamp(28px, 3.6vw, 48px);
    align-items: start;
  }
}

.page-faq .data-split__media {
  margin: 0;
}

@media (min-width: 1080px) {
  .page-faq .data-split__media {
    position: sticky;
    top: 108px;
  }
}

/* ---------- 联系支持 ---------- */
.page-faq .support-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-bottom: clamp(20px, 3vw, 30px);
  border: var(--bw-3) solid var(--faq-rule);
  background: var(--faq-rule);
}

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

.page-faq .support-panel__cell {
  background: var(--charcoal-900);
  padding: 20px 18px 22px;
}

.page-faq .support-panel__label {
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime-500);
}

.page-faq .support-panel__value {
  margin: 11px 0 0;
  font-family: var(--font-data);
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper-050);
  word-break: break-word;
}

.page-faq .support-panel__note {
  margin: 9px 0 0;
  font-size: 13.5px;
  line-height: 1.66;
  color: var(--mist-400);
}

.page-faq .support-tips {
  padding: clamp(20px, 3vw, 32px);
  border: var(--bw) solid var(--faq-rule);
  background: var(--faq-panel);
}

.page-faq .support-tips__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.4;
  color: var(--paper-050);
}

.page-faq .support-tips__list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 68ch;
}

.page-faq .support-tips__list li {
  position: relative;
  padding-left: 18px;
  margin-top: 9px;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--paper-050);
  opacity: 0.88;
}

.page-faq .support-tips__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ember-500);
}

.page-faq .support-tips__foot {
  max-width: 68ch;
  margin: 18px 0 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--mist-400);
}

.page-faq .support-tips__foot a {
  color: var(--lime-500);
  text-underline-offset: 3px;
}

.page-faq .support-tips .btn {
  margin-top: 20px;
}

/* ---------- 窄屏收束 ---------- */
@media (max-width: 520px) {
  .page-faq .help-hero__title {
    font-size: clamp(34px, 11vw, 44px);
  }
  .page-faq .help-figure {
    padding: 11px 9px 13px;
  }
  .page-faq .help-figure__label {
    font-size: 11px;
  }
  .page-faq .path {
    padding: 17px 15px 19px;
  }
  .page-faq .support-panel__cell {
    padding: 17px 15px 19px;
  }
}

.page-faq .btn {
  text-decoration: none;
}