.page-faq {
  --faq-line: rgba(53, 224, 208, 0.26);
  --faq-line-soft: rgba(167, 182, 194, 0.16);
  --faq-panel: #102337;
  --faq-panel-deep: #0d1f30;
  --faq-body-text: #c3d1db;
  display: block;
  color: var(--paper);
  background:
    radial-gradient(880px 520px at 92% -6%, rgba(53, 224, 208, 0.13), transparent 62%),
    radial-gradient(760px 460px at -8% 18%, rgba(245, 165, 36, 0.07), transparent 60%),
    var(--ink);
  padding-bottom: clamp(56px, 9vw, 104px);
  overflow-x: clip;
}

.page-faq .faq-frame {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.page-faq .breadcrumb {
  margin: clamp(16px, 2.6vw, 28px) 0 clamp(18px, 3vw, 34px);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  border-top: 2px solid var(--cyan);
  padding-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero-copy {
  min-width: 0;
  animation: faqRise 0.46s var(--ease) both;
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--amber);
}

.page-faq h1 {
  margin: 16px 0 0;
  font-size: clamp(32px, 6.4vw, 62px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 900;
}

.page-faq .faq-hero-lead {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.85;
  color: var(--faq-body-text);
}

/* 检索框 */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
  padding: 10px 14px;
  border: 2px solid var(--cyan);
  background: rgba(18, 42, 63, 0.86);
  box-shadow: var(--shadow-hard);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--mint);
  background: #143049;
  box-shadow: 6px 6px 0 rgba(53, 224, 208, 0.3);
}

.page-faq .faq-search-icon {
  flex: none;
  display: inline-flex;
  color: var(--cyan);
}

.page-faq .faq-search input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--paper);
  font-family: var(--sans);
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.5;
  padding: 8px 0;
  outline: none;
  appearance: none;
}

.page-faq .faq-search input::placeholder {
  color: var(--haze);
  opacity: 1;
}

.page-faq .faq-search input::-webkit-search-cancel-button {
  filter: invert(0.7);
}

.page-faq .faq-search-hint {
  flex: none;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--amber);
  padding: 3px 7px;
}

/* 数据条 */
.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stat {
  border-left: 2px solid var(--cyan);
  padding-left: 12px;
}

.page-faq .faq-stat-num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(20px, 3vw, 27px);
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-stat-label {
  display: block;
  margin-top: 2px;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--haze);
}

/* 快速跳转 */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px dashed var(--faq-line-soft);
}

.page-faq .faq-jump-label {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--haze);
}

.page-faq .faq-jump a {
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 2px solid rgba(245, 165, 36, 0.5);
  padding-bottom: 1px;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--mint);
  border-bottom-color: var(--cyan);
}

/* 图片 */
.page-faq .media-frame {
  border: 2px solid var(--faq-line);
  box-shadow: var(--shadow-hard-lg);
  background: var(--faq-panel-deep);
  overflow: hidden;
}

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

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

.page-faq .faq-figcap {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--haze);
  padding: 9px 12px;
  border-top: 1px solid var(--faq-line-soft);
  background: rgba(11, 27, 43, 0.7);
}

/* ============ 章节通用 ============ */
.page-faq .faq-section {
  margin-top: clamp(44px, 7vw, 84px);
  border-top: 1px solid var(--faq-line-soft);
  padding-top: clamp(22px, 3.4vw, 36px);
}

.page-faq .faq-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 20px;
  margin-bottom: clamp(14px, 2.2vw, 22px);
}

.page-faq .faq-head h2 {
  margin: 0;
  max-width: 24em;
  font-size: clamp(21px, 3.4vw, 32px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  font-weight: 800;
}

.page-faq .faq-head-note {
  margin: 0;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--haze);
}

.page-faq .faq-section-lead {
  margin: 0 0 clamp(16px, 2.4vw, 22px);
  max-width: 36em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .faq-reset {
  appearance: none;
  border: 1px solid var(--faq-line);
  background: transparent;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  padding: 8px 13px;
  cursor: pointer;
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease), color 0.16s var(--ease);
}

.page-faq .faq-reset:hover {
  background: rgba(53, 224, 208, 0.12);
  border-color: var(--cyan);
}

.page-faq .faq-reset[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

/* ============ 分类磁贴 ============ */
.page-faq .faq-tiles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  padding: 16px 16px 14px;
  background: var(--ink-2);
  border: 1px solid var(--faq-line);
  color: var(--paper);
  font: inherit;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background 0.18s var(--ease),
    border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-tile:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: var(--shadow-hard);
}

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

.page-faq .faq-tile[aria-pressed="true"] {
  background: linear-gradient(180deg, rgba(53, 224, 208, 0.18), rgba(53, 224, 208, 0.04));
  border-color: var(--cyan);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-faq .faq-tile-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-faq .faq-tile-qs {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--haze);
}

.page-faq .faq-tile-qs li {
  position: relative;
  padding-left: 12px;
}

.page-faq .faq-tile-qs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .faq-tile-foot {
  display: flex;
  justify-content: flex-end;
  margin-top: auto;
  padding-top: 8px;
}

.page-faq .faq-tile-count {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-aside {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--haze);
}

.page-faq .faq-aside a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.45);
  padding-bottom: 1px;
}

.page-faq .faq-aside a:hover,
.page-faq .faq-aside a:focus-visible {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

/* ============ 折叠问答 ============ */
.page-faq .faq-qa-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .faq-qa {
  border: 1px solid var(--faq-line-soft);
  background: var(--faq-panel);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-qa[open] {
  border-color: var(--cyan);
  background: var(--ink-2);
  box-shadow: inset 3px 0 0 var(--amber);
}

.page-faq .faq-qa summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
}

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

.page-faq .faq-qa summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-qa[open] summary::after {
  content: "–";
  color: var(--amber);
}

.page-faq .faq-qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-qa-tag {
  flex: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid rgba(53, 224, 208, 0.42);
  padding: 2px 6px;
  line-height: 1.4;
}

.page-faq .faq-qa-q {
  flex: 1 1 200px;
  min-width: 0;
}

.page-faq .faq-qa-body {
  padding: 14px 16px 18px;
  border-top: 1px solid var(--faq-line-soft);
  background: rgba(11, 27, 43, 0.5);
  color: var(--faq-body-text);
  font-size: 14.8px;
  line-height: 1.85;
  animation: faqBodyIn 0.22s var(--ease) both;
}

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

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

.page-faq .faq-qa-body ol,
.page-faq .faq-qa-body ul {
  margin: 0 0 10px;
  padding-left: 1.2em;
  display: grid;
  gap: 6px;
}

.page-faq .faq-qa-body ol:last-child,
.page-faq .faq-qa-body ul:last-child {
  margin-bottom: 0;
}

.page-faq .faq-qa-body strong {
  color: var(--paper);
  font-weight: 700;
}

.page-faq .faq-qa-body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.45);
}

.page-faq .faq-qa-body a:hover,
.page-faq .faq-qa-body a:focus-visible {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

.page-faq .faq-mark {
  background: rgba(143, 242, 232, 0.16);
  color: var(--mint);
  padding: 1px 4px;
  font-weight: 600;
}

/* ============ 使用指南导读 ============ */
.page-faq .faq-guide {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.5vw, 36px);
}

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

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--faq-line-soft);
  scroll-margin-top: 90px;
}

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

.page-faq .faq-step-num {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--amber);
  border: 1px solid rgba(245, 165, 36, 0.5);
  text-align: center;
  padding: 3px 0;
  height: fit-content;
}

.page-faq .faq-step h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  line-height: 1.4;
  letter-spacing: -0.005em;
  font-weight: 700;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.85;
  color: var(--faq-body-text);
}

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

/* ============ 联系面板 ============ */
.page-faq .faq-help {
  margin-top: clamp(48px, 8vw, 90px);
  border-top: 2px solid var(--cyan);
  padding-top: clamp(24px, 4vw, 40px);
}

.page-faq .faq-help-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(20px, 4vw, 40px);
  background: linear-gradient(135deg, #122a3f 0%, #0e2133 54%, rgba(245, 165, 36, 0.1) 100%);
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--amber);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-help-copy {
  min-width: 0;
}

.page-faq .faq-help-copy h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  font-weight: 800;
}

.page-faq .faq-help-copy p {
  margin: 0 0 12px;
  max-width: 34em;
  font-size: 14.8px;
  line-height: 1.85;
  color: var(--faq-body-text);
}

.page-faq .faq-help-tip {
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
  color: var(--paper) !important;
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

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

.page-faq .faq-contact-list li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--faq-line-soft);
}

.page-faq .faq-contact-list li:first-child {
  border-top: 1px dashed var(--faq-line-soft);
}

.page-faq .faq-contact-key {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--haze);
}

.page-faq .faq-contact-val {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

/* ============ 动画 ============ */
@keyframes faqRise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes faqBodyIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============ 断点 ============ */
@media (min-width: 560px) {
  .page-faq .faq-tiles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-guide {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: start;
  }

  .page-faq .faq-step {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 18px;
    padding: 20px 0;
  }

  .page-faq .faq-qa summary {
    padding: 16px 20px;
  }

  .page-faq .faq-qa-body {
    padding: 16px 20px 20px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-faq .faq-hero-media {
    margin-top: 42px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-tiles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .faq-help-panel {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }
}

/* 大屏补充错层节奏 */
@media (min-width: 1180px) {
  .page-faq .faq-tiles {
    gap: 18px;
  }

  .page-faq .faq-tile {
    padding: 20px 20px 16px;
  }

  .page-faq .faq-tile-name {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero-copy,
  .page-faq .faq-qa-body {
    animation: none;
  }

  .page-faq .faq-tile,
  .page-faq .faq-reset,
  .page-faq .faq-jump a,
  .page-faq .faq-search,
  .page-faq .faq-qa {
    transition: none;
  }

  .page-faq .faq-tile:hover {
    transform: none;
  }
}