/* ==========================================================
   帮助中心 · 页面专属样式（作用域：.page-faq）
   ========================================================== */

.page-faq {
  --faq-gap: clamp(20px, 3vw, 40px);
  background:
    radial-gradient(140% 90% at 85% -10%, rgba(198, 255, 61, 0.07), transparent 62%),
    var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------------- 首屏 ---------------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(88px, 13vw, 150px) 0 clamp(38px, 6vw, 66px);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15, 36, 28, 0.92), rgba(7, 19, 15, 0));
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: clamp(80px, 22vw, 260px);
  height: 1px;
  background: var(--lime);
}

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

@media (min-width: 960px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }
}

.page-faq .faq-crumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-faq .faq-crumb-list li:not(:first-child)::before {
  content: "／";
  color: var(--line);
}

.page-faq .crumb-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-faq .crumb-link:hover,
.page-faq .crumb-link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-faq .crumb-current {
  color: var(--steel);
}

.page-faq h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 17ch;
  color: var(--paper);
}

.page-faq .faq-lede {
  max-width: 58ch;
  margin: 0 0 22px;
}

.page-faq .faq-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero-aside {
  border: 1px solid var(--line);
  background: var(--field);
  padding: 20px 22px;
  box-shadow: 8px 8px 0 0 var(--layer);
}

.page-faq .faq-aside-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--steel);
  margin: 0 0 8px;
}

.page-faq .faq-aside-main {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: -0.01em;
  color: var(--lime);
  margin: 0 0 10px;
}

.page-faq .faq-aside-sub {
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
  margin: 0 0 18px;
}

.page-faq .faq-aside-btn {
  display: block;
  width: 100%;
  text-align: center;
}

/* ---------------- 主体骨架 ---------------- */

.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 60px);
  padding-top: clamp(34px, 5vw, 64px);
  padding-bottom: clamp(60px, 9vw, 130px);
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: 230px minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------------- 左侧问题目录 ---------------- */

.page-faq .faq-toc {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

@media (min-width: 1024px) {
  .page-faq .faq-toc {
    position: sticky;
    top: 92px;
  }
}

.page-faq .faq-toc-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--steel);
  margin: 0 0 12px;
}

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

.page-faq .faq-toc-link {
  display: block;
  padding: 9px 12px 9px 14px;
  border-left: 2px solid var(--line);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--fast) var(--ease),
              border-color var(--fast) var(--ease),
              background-color var(--fast) var(--ease);
}

.page-faq .faq-toc-link:hover,
.page-faq .faq-toc-link:focus-visible {
  color: var(--lime);
  border-left-color: var(--lime);
  background: rgba(198, 255, 61, 0.06);
}

/* ---------------- 章节通用 ---------------- */

.page-faq .faq-section + .faq-section {
  margin-top: clamp(44px, 7vw, 88px);
  padding-top: clamp(34px, 5vw, 60px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-head {
  display: block;
  margin: 0 0 14px;
}

.page-faq .faq-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--paper);
}

.page-faq .faq-section-lede {
  max-width: 62ch;
  margin: 0;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .faq-inline-link {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-inline-link a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.4);
}

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

/* ---------------- 首次访问时间轴 ---------------- */

.page-faq .faq-intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  margin-top: 26px;
}

@media (min-width: 900px) {
  .page-faq .faq-intro-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
    align-items: start;
  }
}

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

.page-faq .timeline-item {
  position: relative;
  padding-left: clamp(38px, 5vw, 58px);
  padding-bottom: clamp(26px, 4vw, 40px);
}

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

.page-faq .timeline-item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-faq .timeline-item:last-child::before {
  display: none;
}

.page-faq .timeline-node {
  position: absolute;
  left: 0;
  top: 6px;
  width: 15px;
  height: 15px;
  border: 1px solid var(--line);
  background: var(--ink);
  transform: rotate(45deg);
}

.page-faq .timeline-item:first-child .timeline-node {
  border-color: var(--lime);
  background: var(--lime);
  box-shadow: 0 0 0 5px rgba(198, 255, 61, 0.14);
}

.page-faq .timeline-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  margin-bottom: 6px;
}

.page-faq .timeline h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
  color: var(--paper);
}

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

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

/* ---------------- 提问卡片 ---------------- */

.page-faq .qa-group {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .qa {
  border: 1px solid var(--line);
  background: var(--field);
  transition: border-color var(--fast) var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(198, 255, 61, 0.42);
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 16px;
  line-height: 1.55;
  color: var(--paper);
  transition: color var(--fast) var(--ease);
}

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

.page-faq .qa-q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.4;
  color: var(--lime);
}

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

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

.page-faq .qa-num {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .qa-text {
  flex: 1 1 auto;
}

.page-faq .qa-a {
  margin: 0 18px 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .qa-a p {
  margin: 0 0 10px;
}

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

.page-faq .qa[open] .qa-a {
  animation: faq-panel-in 240ms var(--ease);
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .qa-steps {
  list-style: none;
  counter-reset: qastep;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .qa-steps li {
  counter-increment: qastep;
  position: relative;
  padding-left: 32px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .qa-steps li::before {
  content: counter(qastep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--lime);
}

/* ---------------- 宽幅氛围图 ---------------- */

.page-faq .faq-wide-figure {
  margin: 26px 0 4px;
}

/* ---------------- 联系区 ---------------- */

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 26px;
}

@media (min-width: 720px) {
  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .faq-contact-card {
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: var(--field);
  padding: 18px 20px;
}

.page-faq .faq-contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--steel);
  margin: 0 0 8px;
}

.page-faq .faq-contact-value {
  font-family: var(--font-mono);
  font-size: clamp(17px, 2vw, 21px);
  letter-spacing: 0.01em;
  color: var(--lime);
  margin: 0 0 8px;
  word-break: break-word;
}

.page-faq .faq-contact-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------------- 窄屏与动效收敛 ---------------- */

@media (max-width: 560px) {
  .page-faq .faq-hero-aside {
    box-shadow: 5px 5px 0 0 var(--layer);
  }

  .page-faq .qa-q {
    font-size: 15px;
    padding: 14px 15px;
  }

  .page-faq .qa-a {
    margin: 0 15px 15px;
  }

  .page-faq .qa-steps li {
    padding-left: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa[open] .qa-a {
    animation: none;
  }

  .page-faq .qa-q,
  .page-faq .qa,
  .page-faq .faq-toc-link,
  .page-faq .crumb-link {
    transition: none;
  }
}
<<<END>>>