/* ===== 支持帮助页 /support/ ===== */
.page-faq {
  --faq-sidebar-w: 240px;
  background: var(--color-primary-bg);
  color: var(--color-text-light);
}

.page-faq__container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

/* ===== Hero 首屏 ===== */
.page-faq__hero {
  background:
    linear-gradient(120deg, transparent 0 70%, rgba(200, 255, 0, 0.07) 70% 100%),
    var(--color-dark-gradient);
  border-bottom: 4px solid var(--color-accent);
  padding: var(--space-4) 0 var(--space-5);
  position: relative;
  overflow: hidden;
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, rgba(200, 255, 0, 0.03) 0 2px, transparent 2px 12px);
  pointer-events: none;
}

.page-faq__hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 220px;
  height: 28px;
  background: var(--color-accent);
  opacity: 0.16;
  transform: skewX(-18deg);
  transform-origin: right bottom;
}

.page-faq__hero-inner {
  position: relative;
  display: grid;
  gap: var(--space-4);
}

.page-faq__hero-copy {
  display: grid;
  gap: var(--space-2);
}

.page-faq__kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin: 0;
}

.page-faq__hero h1 {
  font-family: var(--font-head);
  font-size: 44px;
  line-height: 1.1;
  margin: 0;
  letter-spacing: -0.02em;
}

.page-faq__lead {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(245, 247, 242, 0.85);
  max-width: 56ch;
  margin: 0;
}

/* 搜索框 */
.page-faq__search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(11, 31, 23, 0.7);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 6px 10px 6px 14px;
  max-width: 480px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq__search:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(200, 255, 0, 0.2);
}

.page-faq__search svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

.page-faq__search input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  color: var(--color-text-light);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 8px 0;
  outline: 0;
}

.page-faq__search input::placeholder {
  color: rgba(245, 247, 242, 0.45);
}

.page-faq__search input::-webkit-search-cancel-button {
  -webkit-appearance: none;
}

.page-faq__search-key {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-light);
  background: rgba(245, 247, 242, 0.08);
  border: 1px solid rgba(245, 247, 242, 0.15);
  border-radius: 3px;
  padding: 2px 6px;
  white-space: nowrap;
}

/* 热门检索 */
.page-faq__hot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-size: 13px;
  color: rgba(245, 247, 242, 0.6);
}

.page-faq__hot > span {
  margin-right: 4px;
}

.page-faq__hot a {
  color: var(--color-data);
  text-decoration: none;
  border: 1px solid rgba(0, 194, 255, 0.3);
  border-radius: 999px;
  padding: 3px 10px;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq__hot a:hover {
  background: var(--color-data);
  color: var(--color-text-dark);
}

/* Hero 图片 */
.page-faq__hero-figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-hard);
  aspect-ratio: 2 / 1;
  background: var(--color-alt-bg);
}

.page-faq__hero-figure::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 6px;
  background: var(--color-accent);
  z-index: 1;
}

.page-faq__hero-figure::after {
  content: "";
  position: absolute;
  top: -1px;
  right: 24px;
  width: 48px;
  height: 4px;
  background: var(--color-accent);
  transform: skewX(-24deg);
}

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

/* ===== 状态条 ===== */
.page-faq__statusbar {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-alt-bg);
}

.page-faq__statusbar .page-faq__container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding-block: var(--space-2);
}

.page-faq__statusmeta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(245, 247, 242, 0.7);
}

.page-faq__statusmeta span::before {
  content: "●";
  color: var(--color-accent);
  margin-right: 6px;
  font-size: 10px;
}

/* ===== 快速索引 ===== */
.page-faq__index {
  padding-block: var(--space-4);
}

.page-faq__index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-faq__index-card {
  position: relative;
  background: var(--color-alt-bg);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  padding: var(--space-3);
  text-decoration: none;
  color: var(--color-text-light);
  display: grid;
  gap: 4px;
  overflow: hidden;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq__index-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-top: 22px solid var(--color-dark-gradient);
  border-left: 22px solid transparent;
}

.page-faq__index-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
}

.page-faq__index-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.page-faq__index-title {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
}

.page-faq__index-desc {
  font-size: 13px;
  color: rgba(245, 247, 242, 0.6);
}

/* ===== 主体布局 ===== */
.page-faq__body {
  padding-block: var(--space-5) var(--space-3);
}

.page-faq__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

/* ===== 侧边栏 ===== */
.page-faq__sidebar {
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.page-faq__sidebar-title {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0;
}

.page-faq__sidebar-nav {
  display: grid;
  gap: 6px;
}

.page-faq__sidebar-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(245, 247, 242, 0.75);
  text-decoration: none;
  font-size: 15px;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq__sidebar-nav a span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-data);
}

.page-faq__sidebar-nav a:hover {
  background: rgba(200, 255, 0, 0.06);
  border-color: var(--color-border);
  color: var(--color-text-light);
}

.page-faq__sidebar-card {
  background: var(--color-dark-gradient);
  border: 1px dashed var(--color-border);
  padding: var(--space-3);
  display: grid;
  gap: var(--space-2);
}

.page-faq__sidebar-card p {
  margin: 0;
  font-size: 14px;
  color: rgba(245, 247, 242, 0.8);
}

/* ===== 内容区 ===== */
.page-faq__content {
  display: grid;
  gap: var(--space-5);
}

.page-faq__section {
  display: grid;
  gap: var(--space-3);
}

.page-faq__section-head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--space-2);
}

.page-faq__section-index {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-accent);
}

.page-faq__section-head h2 {
  font-family: var(--font-head);
  font-size: 26px;
  margin: 0;
  letter-spacing: -0.01em;
}

.page-faq__section-head h2::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 22px;
  background: var(--color-accent);
  transform: skewX(-20deg);
  margin-right: var(--space-2);
}

.page-faq__section-head .tag {
  margin-left: auto;
}

.page-faq__section-lead {
  margin: 0;
  color: rgba(245, 247, 242, 0.7);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq__section--mobile .page-faq__section-lead {
  margin-bottom: var(--space-1);
}

/* ===== FAQ 条目 ===== */
.page-faq__item {
  background: var(--color-alt-bg);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-border);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq__item[open] {
  border-left-color: var(--color-accent);
  background: rgba(18, 53, 36, 0.7);
}

.page-faq__item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-light);
}

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

.page-faq__item summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

.page-faq__item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--color-accent);
  transition: transform 0.25s var(--ease);
}

.page-faq__item[open] summary::after {
  transform: rotate(45deg);
}

.page-faq__q {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-data);
  background: rgba(0, 194, 255, 0.12);
  border: 1px solid rgba(0, 194, 255, 0.3);
  border-radius: 2px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.page-faq__item[open] .page-faq__q {
  color: var(--color-text-dark);
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.page-faq__answer {
  padding: 0 var(--space-3) var(--space-3);
  color: rgba(245, 247, 242, 0.8);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq__answer p {
  margin: 0 0 10px;
}

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

.page-faq__answer a {
  color: var(--color-data);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq__answer strong {
  color: var(--color-text-light);
}

/* ===== 移动端图文块 ===== */
.page-faq__mobile-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  align-items: start;
}

.page-faq__mobile-figure {
  margin: 0;
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-hard);
  aspect-ratio: 3 / 4;
  overflow: hidden;
  position: relative;
  background: var(--color-alt-bg);
}

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

.page-faq__mobile-figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--space-2);
  font-size: 13px;
  color: var(--color-text-light);
  background: linear-gradient(to top, rgba(11, 31, 23, 0.92), transparent);
}

.page-faq__mobile-list {
  display: grid;
  gap: var(--space-2);
}

/* ===== 信任数据条 ===== */
.page-faq__trust {
  padding-block: var(--space-4);
  border-block: 1px solid var(--color-border);
  background: linear-gradient(120deg, var(--color-dark-gradient) 0%, var(--color-alt-bg) 100%);
}

.page-faq__trust .page-faq__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.page-faq__trust-item {
  display: grid;
  gap: 2px;
  text-align: center;
}

.page-faq__trust-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-accent);
}

.page-faq__trust-item span:last-child {
  font-size: 13px;
  color: rgba(245, 247, 242, 0.6);
}

/* ===== CTA ===== */
.page-faq__cta {
  padding-block: var(--space-5) var(--space-6);
}

.page-faq__cta-inner {
  background: var(--color-dark-gradient);
  border: 2px solid var(--color-border);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-3);
  position: relative;
  overflow: hidden;
}

.page-faq__cta-inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: var(--color-accent);
}

.page-faq__cta-inner::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 90px;
  height: 100%;
  background: repeating-linear-gradient(-45deg, rgba(200, 255, 0, 0.08) 0 2px, transparent 2px 8px);
  pointer-events: none;
}

.page-faq__cta-copy {
  position: relative;
  z-index: 1;
}

.page-faq__cta-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  margin: 0 0 6px;
  color: var(--color-accent);
}

.page-faq__cta h2 {
  margin: 0 0 6px;
  font-size: 30px;
  font-family: var(--font-head);
}

.page-faq__cta p {
  margin: 0;
  font-size: 15px;
  color: rgba(245, 247, 242, 0.75);
}

.page-faq__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  position: relative;
  z-index: 1;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 768px) {
  .page-faq__hero-inner {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-faq__hero h1 {
    font-size: 54px;
  }

  .page-faq__index-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq__layout {
    grid-template-columns: var(--faq-sidebar-w) 1fr;
    align-items: start;
    gap: var(--space-5);
  }

  .page-faq__sidebar {
    position: sticky;
    top: calc(var(--header-h) + var(--space-3));
  }

  .page-faq__mobile-grid {
    grid-template-columns: 260px 1fr;
  }

  .page-faq__trust .page-faq__container {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq__cta-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: var(--space-5);
  }

  .page-faq__cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .page-faq__mobile-grid {
    grid-template-columns: 320px 1fr;
  }
}