/* ============================================
   帮助中心 /help-center/  ——  page-faq 作用域
   ============================================ */

.page-faq {
  --faq-path: var(--c-lime);
  --faq-nav: var(--c-azure);
  --faq-mobile: var(--c-mint);
  --faq-feedback: var(--c-amber);
  --faq-radius: 22px;

  display: block;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 面包屑 ---------- */

.page-faq .breadcrumbs {
  padding-top: clamp(16px, 3vw, 26px);
  padding-bottom: clamp(10px, 2vw, 16px);
  font-size: 13px;
  color: var(--ink-mute);
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-silver);
}

.page-faq .breadcrumbs a {
  color: var(--ink-mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.page-faq .breadcrumbs a:hover {
  color: var(--c-azure);
  border-bottom-color: currentColor;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 6vw, 78px) 0 clamp(42px, 7vw, 92px);
  background:
    radial-gradient(125% 105% at 82% 0%, rgba(47, 123, 181, 0.36) 0%, rgba(11, 33, 54, 0) 62%),
    radial-gradient(90% 90% at 6% 100%, rgba(94, 211, 192, 0.14) 0%, rgba(11, 33, 54, 0) 58%),
    linear-gradient(158deg, var(--c-deep) 0%, var(--c-midnight) 100%);
  color: var(--c-mist);
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(198, 210, 221, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(198, 210, 221, 0.07) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 86%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 86%);
}

.page-faq .hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-faq .hero-kicker {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-mint);
}

.page-faq .hero-copy h1 {
  margin: 0 0 20px;
  font-size: clamp(32px, 6vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: #fff;
  max-width: 16em;
}

.page-faq .hero-lead {
  margin: 0;
  max-width: 52ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.78;
  color: rgba(234, 241, 246, 0.82);
}

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

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

.page-faq .cat-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 30px;
  max-width: 480px;
}

.page-faq .cat-chip {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--r-md);
  border: 1px solid rgba(198, 210, 221, 0.2);
  background: rgba(234, 241, 246, 0.05);
  color: var(--c-mist);
  text-decoration: none;
  font-size: 14px;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .cat-chip .mono {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-deep);
  flex: none;
}

.page-faq .cat-chip--path .mono { background: var(--faq-path); }
.page-faq .cat-chip--nav .mono { background: var(--c-silver); }
.page-faq .cat-chip--mobile .mono { background: var(--faq-mobile); }
.page-faq .cat-chip--feedback .mono { background: var(--faq-feedback); }

.page-faq .cat-chip:hover {
  background: rgba(234, 241, 246, 0.12);
  border-color: rgba(163, 230, 53, 0.5);
  transform: translateY(-2px);
}

.page-faq .hero-figure {
  position: relative;
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid rgba(198, 210, 221, 0.22);
  background: rgba(8, 23, 38, 0.6);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.7);
}

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

.page-faq .hero-figure__cap {
  position: absolute;
  left: 16px;
  bottom: 14px;
  padding: 6px 12px;
  border-radius: var(--r-pill);
  font-size: 11px;
  letter-spacing: 0.13em;
  color: var(--c-deep);
  background: var(--c-lime);
}

@media (min-width: 960px) {
  .page-faq .hero-inner {
    grid-template-columns: 1.06fr 0.94fr;
    gap: clamp(36px, 5vw, 72px);
  }
}

/* ---------- 分屏骨架 ---------- */

.page-faq .shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 48px);
  padding-top: clamp(38px, 6vw, 74px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 轨道 ---------- */

.page-faq .rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 0 10px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-faq .rail::-webkit-scrollbar {
  display: none;
}

.page-faq .rail-title {
  display: none;
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-slate);
}

.page-faq .rail-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: none;
  padding: 9px 15px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--c-ivory);
  color: var(--ink-soft);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .rail-index {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-slate);
  transition: color var(--dur) var(--ease);
}

.page-faq .rail-link:hover {
  border-color: var(--c-azure);
  color: var(--ink);
}

.page-faq .rail-link[aria-current="true"] {
  background: var(--c-deep);
  border-color: var(--c-deep);
  color: #fff;
}

.page-faq .rail-link[aria-current="true"] .rail-index {
  color: var(--c-lime);
}

@media (min-width: 1080px) {
  .page-faq .shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .rail {
    display: block;
    overflow: visible;
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 0;
    border-right: 1px solid var(--line);
    padding-right: 22px;
  }

  .page-faq .rail-title {
    display: block;
  }

  .page-faq .rail-link {
    display: flex;
    width: 100%;
    margin-bottom: 6px;
    border-radius: var(--r-md);
    border-color: transparent;
    background: transparent;
    white-space: normal;
  }

  .page-faq .rail-link:hover {
    background: var(--paper-alt);
  }

  .page-faq .rail-link[aria-current="true"] {
    background: var(--c-deep);
  }
}

/* ---------- 章节通用 ---------- */

.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-section {
  padding-bottom: clamp(44px, 6vw, 78px);
}

.page-faq .faq-section + .faq-section {
  padding-top: clamp(38px, 5.5vw, 68px);
  border-top: 1px solid var(--line);
}

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

.page-faq .sec-head {
  margin-bottom: clamp(24px, 3.6vw, 40px);
  max-width: 62ch;
}

.page-faq .sec-no {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--c-slate);
}

.page-faq .sec-head h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .sec-lead {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--ink-mute);
}

/* ---------- 四类说明卡片 ---------- */

.page-faq .cat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .cat-card {
  position: relative;
  padding: 22px 22px 20px;
  border-radius: var(--faq-radius);
  background: var(--c-ivory);
  border: 1px solid var(--line);
  border-left: 4px solid var(--c-silver);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .cat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px -26px rgba(11, 33, 54, 0.45);
}

.page-faq .cat-card--path { border-left-color: var(--faq-path); }
.page-faq .cat-card--nav { border-left-color: var(--faq-nav); }
.page-faq .cat-card--mobile { border-left-color: var(--faq-mobile); }
.page-faq .cat-card--feedback { border-left-color: var(--faq-feedback); }

.page-faq .cat-card__no {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: 0.13em;
  color: var(--c-slate);
}

.page-faq .cat-card h3 {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-faq .cat-card p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-mute);
}

.page-faq .cat-card__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-azure);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 123, 181, 0.35);
  padding-bottom: 2px;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.page-faq .cat-card__link:hover {
  color: var(--c-deep);
  border-bottom-color: var(--c-deep);
}

@media (min-width: 700px) {
  .page-faq .cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-faq .index-figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-alt);
}

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

.page-faq .index-figure figcaption {
  padding: 14px 18px;
  font-size: 13.5px;
  line-height: 1.66;
  color: var(--ink-mute);
  border-top: 1px solid var(--line);
}

/* ---------- 三步路径 ---------- */

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

.page-faq .step {
  position: relative;
  padding-left: 68px;
  padding-bottom: 34px;
}

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

.page-faq .step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 23px;
  top: 58px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-silver) 0%, rgba(198, 210, 221, 0.25) 100%);
}

.page-faq .step-no {
  position: absolute;
  left: 0;
  top: 0;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--c-deep);
  color: var(--c-lime);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.page-faq .step h3 {
  margin: 6px 0 10px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-faq .step p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-soft);
  max-width: 68ch;
}

.page-faq .step-tip {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: var(--paper-alt);
  font-size: 13.5px !important;
  line-height: 1.6 !important;
  color: var(--ink-mute) !important;
}

/* ---------- 栏目清单 ---------- */

.page-faq .column-list {
  list-style: none;
  margin: 0 0 clamp(26px, 4vw, 42px);
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .column-list li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 2px 14px;
  padding: 14px 10px;
  border-bottom: 1px solid var(--line);
  transition: background var(--dur-fast) var(--ease);
}

.page-faq .column-list li:hover {
  background: var(--paper-alt);
}

.page-faq .col-no {
  grid-row: span 2;
  align-self: start;
  padding-top: 2px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--c-azure);
  font-weight: 700;
}

.page-faq .col-name {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .col-desc {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.66;
  color: var(--ink-mute);
}

@media (min-width: 780px) {
  .page-faq .column-list li {
    grid-template-columns: 64px 190px minmax(0, 1fr);
    align-items: baseline;
    gap: 0 18px;
    padding: 15px 12px;
  }

  .page-faq .col-no {
    grid-row: auto;
    align-self: baseline;
  }

  .page-faq .col-desc {
    grid-column: auto;
  }
}

/* ---------- 问答折叠 ---------- */

.page-faq .qa-group {
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .qa {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--c-ivory);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--qa-accent, var(--c-azure));
}

.page-faq .qa--path { --qa-accent: var(--faq-path); }
.page-faq .qa--nav { --qa-accent: var(--faq-nav); }
.page-faq .qa--mobile { --qa-accent: var(--faq-mobile); }
.page-faq .qa--feedback { --qa-accent: var(--faq-feedback); }

.page-faq .qa[open] {
  border-color: rgba(47, 123, 181, 0.4);
  background: var(--paper);
}

.page-faq .qa summary {
  position: relative;
  display: block;
  padding: 17px 54px 17px 22px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: color var(--dur-fast) var(--ease);
}

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

.page-faq .qa summary:hover {
  color: var(--c-azure);
}

.page-faq .qa summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--c-azure);
}

.page-faq .qa[open] summary::after {
  content: "−";
}

.page-faq .qa-body {
  padding: 0 54px 20px 22px;
}

.page-faq .qa-body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-soft);
  max-width: 66ch;
}

.page-faq .qa-body a {
  color: var(--c-azure);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 123, 181, 0.35);
}

.page-faq .qa-body a:hover {
  border-bottom-color: var(--c-azure);
}

/* ---------- 下一步入口 ---------- */

.page-faq .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .next-card {
  position: relative;
  display: block;
  padding: 24px 24px 22px;
  border-radius: var(--faq-radius);
  background: linear-gradient(150deg, var(--c-midnight) 0%, var(--c-deep) 100%);
  color: var(--c-mist);
  text-decoration: none;
  border: 1px solid rgba(198, 210, 221, 0.16);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .next-card::after {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(163, 230, 53, 0.24) 0%, rgba(163, 230, 53, 0) 70%);
  pointer-events: none;
}

.page-faq .next-card:hover {
  transform: translateY(-3px);
  border-color: rgba(163, 230, 53, 0.55);
}

.page-faq .next-card__no {
  display: block;
  margin-bottom: 12px;
  font-size: 11.5px;
  letter-spacing: 0.13em;
  color: var(--c-lime);
}

.page-faq .next-card__title {
  display: block;
  margin-bottom: 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: #fff;
}

.page-faq .next-card__desc {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(234, 241, 246, 0.74);
}

@media (min-width: 700px) {
  .page-faq .next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

/* ---------- 减少动态 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .cat-card,
  .page-faq .cat-chip,
  .page-faq .next-card,
  .page-faq .rail-link {
    transition: none;
  }

  .page-faq .cat-card:hover,
  .page-faq .cat-chip:hover,
  .page-faq .next-card:hover {
    transform: none;
  }
}
<<<END>>>