/* 欧易 OKX 下载落地页 · 百变模板前缀 zb541f · 分层高级配色 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #0f172a;
  background: #e8edf3;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
  display: block;
}

/* 页面壳：中性冷灰底，与下方各区块形成层次 */
.zb541fpage {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background:
    radial-gradient(ellipse 90% 55% at 50% 0%, rgba(37, 99, 235, 0.06), transparent 58%),
    linear-gradient(180deg, #f1f4f8 0%, #e8edf3 45%, #e2e8f0 100%);
}

/* 锚点跳转时避开 sticky 顶栏；刘海屏由 safe-area 补偿 */
[id^="zb541f"] {
  scroll-margin-top: calc(80px + env(safe-area-inset-top, 0px));
}

.zb541fcontainer {
  width: 100%;
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.zb541fcontainer_narrow {
  max-width: 800px;
}

/* 顶栏：净白 + 轻阴影，与内容区明确区分 */
.zb541fheader {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-top: env(safe-area-inset-top, 0px);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.04);
}

.zb541fnav {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.zb541fnav_brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.02em;
}

.zb541flogo_img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex-shrink: 0;
}

.zb541fnav_brand_text {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #0891b2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.zb541fnav_list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.zb541fnav_item {
  margin: 0;
}

.zb541fnav_link {
  color: #475569;
  text-decoration: none;
  font-size: 0.9375rem;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.zb541fnav_link:hover,
.zb541fnav_link:focus-visible {
  color: #1d4ed8;
  border-bottom-color: rgba(29, 78, 216, 0.35);
  outline: none;
}

.zb541fnav_toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.zb541fnav_burger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  user-select: none;
}

.zb541fnav_burger_line {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #1e3a8a, #2563eb, #0891b2);
}

.zb541fnav_menu {
  display: block;
}

.zb541fmain {
  flex: 1;
}

/* 主横幅：深蓝夜渐变 + 青蓝高光，独立成「品牌首屏」 */
.zb541fhero {
  position: relative;
  overflow: hidden;
  padding: 48px 0 64px;
  background: linear-gradient(
    135deg,
    #070d18 0%,
    #0f172a 26%,
    #172554 52%,
    #1e3a5f 78%,
    #1d4ed8 100%
  );
}

.zb541fhero_bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 85% 65% at 88% 8%, rgba(59, 130, 246, 0.45), transparent 52%),
    radial-gradient(ellipse 55% 45% at 12% 92%, rgba(34, 211, 238, 0.14), transparent 48%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.06) 0%, transparent 42%);
  pointer-events: none;
}

.zb541fhero_shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.zb541fshape {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
}

.zb541fshape_1 {
  width: 340px;
  height: 340px;
  background: #2563eb;
  top: -100px;
  right: -40px;
}

.zb541fshape_2 {
  width: 260px;
  height: 260px;
  background: #0891b2;
  bottom: 5%;
  left: -100px;
  opacity: 0.35;
}

.zb541fshape_3 {
  width: 200px;
  height: 200px;
  background: #6366f1;
  top: 35%;
  right: 20%;
  opacity: 0.28;
}

.zb541fhero_inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
  min-width: 0;
}

.zb541fhero_copy {
  min-width: 0;
}

.zb541fhero_kicker,
.zb541fhero_title,
.zb541fhero_desc,
.zb541fhero_sub {
  overflow-wrap: anywhere;
}

.zb541fhero_kicker {
  margin: 0 0 12px;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #d4c08a;
}

.zb541fhero_title {
  margin: 0 0 16px;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  line-height: 1.25;
  color: #f8fafc;
  letter-spacing: -0.02em;
}

.zb541fhero_desc {
  margin: 0 0 12px;
  color: #cbd5e1;
  font-size: 1rem;
  max-width: 36em;
}

.zb541fhero_sub {
  margin: 0 0 28px;
  color: #94a3b8;
  font-size: 0.9375rem;
  line-height: 1.65;
  max-width: 40em;
}

.zb541fhero_sub strong {
  color: #e2e8f0;
  font-weight: 600;
}

.zb541fhero_actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.zb541fhero_stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  padding: 0;
  list-style: none;
}

.zb541fhero_stat {
  margin: 0;
  padding: 8px 14px;
  font-size: 0.8125rem;
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  letter-spacing: 0.02em;
}

.zb541fbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 10px;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}

.zb541fbtn_app {
  min-width: 170px;
  height: 46px;
  padding: 0 18px;
}

.zb541fbtn_apple {
  color: #0b3a67;
  background: linear-gradient(135deg, #e0f2fe 0%, #eff6ff 45%, #ffffff 100%);
  border: 1px solid rgba(37, 99, 235, 0.22);
  box-shadow: 0 10px 28px rgba(37, 99, 235, 0.10);
}

.zb541fbtn_apple:hover,
.zb541fbtn_apple:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.18);
  outline: none;
}

.zb541fbtn_android {
  color: #ffffff;
  background: linear-gradient(135deg, #22c55e 0%, #0ea5e9 100%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 10px 28px rgba(34, 197, 94, 0.22);
}

.zb541fbtn_android:hover,
.zb541fbtn_android:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(34, 197, 94, 0.28);
  outline: none;
}

.zb541fbtn_primary {
  color: #0f172a;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
}

.zb541fbtn_primary:hover,
.zb541fbtn_primary:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.3);
  outline: none;
}

.zb541fbtn_ghost {
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.06);
}

.zb541fbtn_ghost:hover,
.zb541fbtn_ghost:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.5);
  outline: none;
}

.zb541fhero_media {
  position: relative;
  min-width: 0;
}

.zb541ffigure {
  margin: 0;
}

.zb541ffigure_hero .zb541fimg {
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow:
    0 24px 48px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.06) inset;
}

.zb541fhero .zb541fcaption {
  color: #94a3b8;
}

.zb541fcaption {
  margin-top: 12px;
  font-size: 0.8125rem;
  color: #64748b;
}

.zb541fsection {
  padding: 56px 0;
}

/* 下载区：浅灰蓝底，与纯白/深带形成对比 */
.zb541fsection_alt {
  background: linear-gradient(180deg, #eef2f6 0%, #e8edf3 100%);
  border-top: 1px solid rgba(15, 23, 42, 0.05);
  border-bottom: 1px solid rgba(15, 23, 42, 0.05);
}

/* 欧易官网下载 × 欧易交易所下载：板块框架与双栏布局 */
.zb541fsection_head_download {
  margin-bottom: 36px;
}

.zb541fsection_head_download .zb541fsection_title {
  position: relative;
  padding-bottom: 4px;
}

.zb541fsection_head_download .zb541fsection_title::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  margin: 14px auto 0;
  border-radius: 2px;
  background: linear-gradient(90deg, #2563eb, #0d9488);
}

.zb541fdownload_label {
  margin: 0 0 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #64748b;
}

.zb541fdownload_framework {
  width: 100%;
  min-width: 0;
}

/* 下载区：主横卡 + 侧栏补充，打破双卡雷同 */
.zb541fdownload_split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: stretch;
  min-width: 0;
}

.zb541fdownload_main {
  overflow: hidden;
}

.zb541fdownload_main_inner {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-height: 0;
  flex: 1;
}

.zb541fdownload_main_media {
  flex-shrink: 0;
  background: linear-gradient(180deg, #f1f5f9 0%, #e8eef5 100%);
  padding: 10px 10px 0;
}

.zb541fdownload_main_media .zb541fimg {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 14px 14px 0 0;
  display: block;
}

.zb541fdownload_main_body {
  padding: 18px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.zb541fdownload_main_body .zb541fcard_title {
  margin: 0;
  font-size: clamp(1.15rem, 2.5vw, 1.35rem);
}

.zb541fdownload_main_body .zb541fcard_text {
  margin: 0;
}

.zb541fdownload_chip {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #1d4ed8;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.zb541fdownload_chip_teal {
  color: #0f766e;
  background: rgba(13, 148, 136, 0.1);
  border-color: rgba(13, 148, 136, 0.22);
}

.zb541fdownload_side {
  min-width: 0;
}

.zb541fdownload_sidecard {
  height: 100%;
}

.zb541fdownload_sidecard .zb541fcard_download_body .zb541fcard_title {
  margin-top: 4px;
}

.zb541fdownload_sidecard .zb541fcard_download_body {
  padding-top: 16px;
}

.zb541fcard.zb541fcard_download {
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-left: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.zb541fcard.zb541fcard_download:hover {
  border-left-color: transparent;
}

.zb541fcard.zb541fcard_download_site {
  border-top: 3px solid #2563eb;
}

.zb541fcard.zb541fcard_download_exch {
  border-top: 3px solid #0d9488;
}

.zb541fcard_download_tag {
  flex-shrink: 0;
  padding: 10px 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #475569;
  background: #f1f5f9;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.zb541fcard_download_site .zb541fcard_download_tag {
  color: #1d4ed8;
  background: rgba(37, 99, 235, 0.08);
}

.zb541fcard_download_exch .zb541fcard_download_tag {
  color: #0f766e;
  background: rgba(13, 148, 136, 0.08);
}

.zb541fcard_download_media {
  flex-shrink: 0;
  background: #f8fafc;
  padding: 6px;
}

.zb541ffigure_download {
  margin: 0;
  line-height: 0;
}

.zb541fcard_download_media .zb541fimg {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 14px;
  display: block;
}

.zb541fcard_download_body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 20px 22px 22px;
  min-height: 0;
}

.zb541fcard_download_body .zb541fcard_title {
  margin: 0 0 10px;
}

.zb541fcard_download_body .zb541fcard_text {
  margin: 0;
  flex: 1;
}

.zb541fsection_head {
  text-align: center;
  margin-bottom: 40px;
}

.zb541fsection_title {
  margin: 0 0 12px;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  color: #0f172a;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.zb541fsection_title_light {
  color: #0f172a;
}

.zb541fsection_lead {
  margin: 0 auto;
  max-width: 640px;
  color: #64748b;
  font-size: 1rem;
}

.zb541fprose {
  max-width: 720px;
  margin: 0 auto 32px;
  color: #475569;
  font-size: 0.9375rem;
  line-height: 1.75;
  text-align: center;
}

.zb541fprose p {
  margin: 0 0 14px;
}

.zb541fprose p:last-child {
  margin-bottom: 0;
}

.zb541fgrid {
  display: grid;
  gap: 28px;
}

.zb541fgrid_2 {
  grid-template-columns: 1fr;
}

.zb541fgrid_3 {
  grid-template-columns: 1fr;
}

.zb541fgrid_4 {
  grid-template-columns: 1fr;
}

/* 卡片：白底 + 左侧品牌色条 + 柔和投影 */
.zb541fcard {
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 18px;
  padding: 22px 22px 22px 24px;
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.06);
  border-left: 3px solid #2563eb;
  transition: border-color 0.2s, box-shadow 0.25s, transform 0.2s;
}

.zb541fcard:hover {
  border-left-color: #1d4ed8;
  box-shadow: 0 16px 48px rgba(15, 23, 42, 0.1);
  transform: translateY(-2px);
}

.zb541fcard .zb541fimg {
  border-radius: 14px;
  width: 100%;
}

.zb541fcard_title {
  margin: 20px 0 10px;
  font-size: 1.2rem;
  color: #0f172a;
}

.zb541fcard_text {
  margin: 0;
  color: #475569;
  font-size: 0.9375rem;
}

.zb541fcard_text + .zb541fcard_text {
  margin-top: 12px;
}

/* 欧易下载多端版本：框架外壳 + 分组条 + 系统卡 */
.zb541fsection_head_platform {
  margin-bottom: 32px;
}

.zb541fsection_head_platform .zb541fsection_title {
  padding-bottom: 4px;
}

.zb541fsection_head_platform .zb541fsection_title::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  margin: 14px auto 0;
  border-radius: 2px;
  background: linear-gradient(90deg, #2563eb, #7c3aed);
}

.zb541fplatform_label {
  margin: 0 0 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #64748b;
}

.zb541fplatform_framework {
  width: 100%;
  min-width: 0;
}

.zb541fplatform_board {
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 28%);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.05);
  overflow: hidden;
}

.zb541fplatform_intro {
  margin: 0 auto 16px;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(37, 99, 235, 0.06);
  border: 1px solid rgba(15, 23, 42, 0.08);
  color: #475569;
  font-size: 0.9375rem;
  line-height: 1.6;
  text-align: center;
  max-width: 52rem;
}

.zb541fplatform_rows {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.zb541fplatform_panel {
  position: relative;
  overflow: hidden;
}

.zb541fplatform_panel_desk {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: center;
  padding: 18px 16px;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.05);
}

.zb541fplatform_panel_desk::before {
  content: "桌面端";
  position: absolute;
  top: 14px;
  right: 16px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #1d4ed8;
  text-transform: uppercase;
  opacity: 0.85;
}

.zb541fplatform_panel_mob {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 0;
  border-radius: 14px;
  background: #ecfdf5;
  border: 1px solid rgba(16, 185, 129, 0.28);
}

.zb541fplatform_panel_mob .zb541fplatform_media {
  padding: 14px 14px 0;
  margin: 0;
}

.zb541fplatform_panel_mob .zb541fplatform_media .zb541fimg {
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: none;
}

.zb541fplatform_panel_mob .zb541fplatform_copy {
  padding: 0 16px 18px;
  background: #ffffff;
  margin: 0 10px 10px;
  border-radius: 12px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.05);
}

.zb541fplatform_panel_mob::before {
  content: "移动端";
  display: block;
  padding: 12px 18px 0;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #047857;
  text-transform: uppercase;
}

.zb541fplatform_row {
  margin: 0;
}

.zb541fplatform_row_desktop {
  border-left: none;
}

.zb541fplatform_row_mobile {
  border-left: none;
}

.zb541fplatform_panel_desk .zb541fplatform_copy {
  padding-right: 4.5rem;
}

@media (max-width: 767px) {
  .zb541fplatform_panel_desk .zb541fplatform_copy {
    padding-right: 0;
    padding-top: 2.25rem;
  }

  .zb541fplatform_panel_desk::before {
    top: 10px;
    right: 12px;
  }
}

.zb541fplatform_copy {
  min-width: 0;
}

.zb541fplatform_copy .zb541fhero_actions {
  margin-top: 16px;
}

.zb541fplatform_kicker {
  margin: 0 0 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #64748b;
}

.zb541fplatform_title {
  margin: 0 0 10px;
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  line-height: 1.3;
  color: #0f172a;
}

.zb541fplatform_text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: #475569;
}

.zb541fplatform_media {
  width: 100%;
}

.zb541fplatform_media .zb541fimg {
  width: 100%;
  height: auto;
  aspect-ratio: auto;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  display: block;
}

.zb541ffeatures_layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

.zb541ffeatures_framework {
  width: 100%;
  min-width: 0;
}

.zb541ffeatures_shell {
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 16px;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.06);
  padding: 18px;
}

.zb541ffeatures_top {
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  margin-bottom: 20px;
  padding-bottom: 18px;
}

.zb541ffeatures_layout_frame {
  gap: 24px;
  align-items: center;
}

.zb541fsubhead {
  margin: 40px 0 20px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #0f172a;
  text-align: center;
}

.zb541fsubhead:first-child {
  margin-top: 0;
}

.zb541fmini_cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 8px;
}

.zb541fmini_card {
  padding: 18px 20px;
  background: #f8fafc;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.zb541fmini_index {
  display: block;
  width: fit-content;
  margin: 0 0 10px;
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: #94a3b8;
}

.zb541fmini_card_lead .zb541fmini_index {
  color: #1d4ed8;
}

.zb541fmini_card:hover {
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.zb541fmini_title {
  margin: 0 0 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #1d4ed8;
}

.zb541fmini_text {
  margin: 0;
  font-size: 0.875rem;
  color: #64748b;
  line-height: 1.6;
}

.zb541fflow {
  counter-reset: zb541fflow;
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.zb541fflow > li {
  list-style: none;
}

.zb541fflow_item {
  position: relative;
  counter-increment: zb541fflow;
  padding: 0 0 24px 52px;
  border-left: 2px solid rgba(37, 99, 235, 0.2);
  margin-left: 16px;
}

.zb541fflow_item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.zb541fflow_item::before {
  content: counter(zb541fflow);
  position: absolute;
  left: -17px;
  top: 0;
  width: 32px;
  height: 32px;
  line-height: 32px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.zb541fflow_title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #0f172a;
}

.zb541fflow_text {
  margin: 0;
  font-size: 0.9375rem;
  color: #64748b;
  line-height: 1.65;
}

/* 获取流程：框架结构 */
.zb541fflow_framework {
  width: 100%;
  min-width: 0;
}

.zb541fflow_shell {
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 16px;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.06);
  padding: 20px;
  overflow: hidden;
}

.zb541fflow_shell::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 26px;
  bottom: 26px;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0), rgba(37, 99, 235, 0.35), rgba(13, 148, 136, 0.35), rgba(13, 148, 136, 0));
  pointer-events: none;
}

.zb541fflow_grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.zb541fflow_card {
  position: relative;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 14px;
  padding: 18px 18px 16px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
}

.zb541fflow_card::after {
  content: "";
  position: absolute;
  right: -11px;
  top: 26px;
  width: 22px;
  height: 2px;
  background: rgba(37, 99, 235, 0.28);
}

.zb541fflow_num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #ffffff;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  margin-bottom: 10px;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.zb541fflow_icon {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  margin: 0 0 10px 8px;
  color: #1d4ed8;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.2);
  vertical-align: middle;
}

.zb541fflow_icon svg {
  display: block;
}

/* 首页流程：纵向时间轴式步骤 */
#zb541fflow .zb541fflow_shell {
  background: #f8fafc;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: none;
  padding: 0;
  border-radius: 16px;
  overflow: hidden;
}

#zb541fflow .zb541fflow_shell::before {
  display: none;
}

#zb541fflow .zb541fflow_grid {
  gap: 0;
  max-width: 720px;
  margin: 0 auto;
}

#zb541fflow .zb541fflow_card {
  display: grid;
  grid-template-columns: 56px 1fr;
  grid-template-rows: auto auto;
  column-gap: 16px;
  row-gap: 6px;
  align-items: start;
  padding: 18px 20px 20px 18px;
  border-radius: 0;
  border: none;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: none;
}

#zb541fflow .zb541fflow_card:last-child {
  border-bottom: none;
}

#zb541fflow .zb541fflow_card::after {
  display: none;
}

#zb541fflow .zb541fflow_num {
  grid-column: 1;
  grid-row: 1;
  margin: 0;
  align-self: center;
  justify-self: center;
}

#zb541fflow .zb541fflow_icon {
  grid-column: 1;
  grid-row: 2;
  margin: 4px 0 0;
  justify-self: center;
  align-self: start;
}

#zb541fflow .zb541fflow_title {
  grid-column: 2;
  grid-row: 1;
  margin: 0 0 4px;
}

#zb541fflow .zb541fflow_text {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
}

#zb541fflow .zb541fflow_card:nth-child(even) .zb541fflow_num {
  background: linear-gradient(135deg, #0d9488, #0f766e);
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
}

#zb541fflow .zb541fflow_card:nth-child(even) .zb541fflow_icon {
  color: #0f766e;
  background: rgba(13, 148, 136, 0.1);
  border-color: rgba(13, 148, 136, 0.24);
}

.zb541fsecurity_grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.zb541fsecurity_item {
  padding: 22px 24px;
  background: #ffffff;
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.04);
}

.zb541fsecurity_title {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 600;
  color: #0f172a;
}

.zb541fsecurity_text {
  margin: 0;
  font-size: 0.9375rem;
  color: #64748b;
  line-height: 1.65;
}

.zb541fbullets {
  margin: 0;
  padding: 0;
  list-style: none;
}

.zb541fbullet {
  position: relative;
  padding-left: 22px;
  margin-bottom: 18px;
  color: #334155;
  font-size: 0.9375rem;
}

.zb541fbullet::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #0891b2);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.zb541fstrong {
  color: #1d4ed8;
  font-weight: 600;
}

.zb541ffigure_tall {
  max-width: min(400px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.zb541ffigure_tall .zb541fimg {
  border-radius: 20px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

.zb541ffigure_features {
  margin-left: 0;
  margin-right: auto;
  max-width: min(260px, 100%);
  width: 100%;
  transform: translateX(-60px);
}

@media (max-width: 767px) {
  .zb541ffigure_features {
    max-width: min(240px, 100%);
    transform: none;
    margin-left: auto;
    margin-right: auto;
  }
}

/* 功能亮点：净白区块 */
section#zb541ffeatures {
  background: #ffffff;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

/* 带状区：深色「品质带」+ 顶部金线点缀 */
.zb541fsection_band {
  position: relative;
  background: linear-gradient(145deg, #0c1524 0%, #111c2e 45%, #152447 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
  box-shadow: inset 0 1px 0 rgba(212, 192, 138, 0.35);
}

.zb541fsection_band::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, #c9a96e, #d4c08a, #c9a96e, transparent);
  opacity: 0.85;
  pointer-events: none;
}

.zb541fband_inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.zb541fsection_band .zb541fsection_title,
.zb541fsection_band .zb541fsection_title_light {
  color: #f8fafc;
}

.zb541fband_lead {
  margin: 0 0 20px;
  font-size: 0.9375rem;
  color: #94a3b8;
  line-height: 1.65;
  max-width: 36em;
}

.zb541fsteps {
  margin: 20px 0 0;
  padding-left: 1.25em;
  color: #334155;
}

.zb541fsection_band .zb541fsteps,
.zb541fsection_band .zb541fstep {
  color: #cbd5e1;
}

.zb541fstep {
  margin-bottom: 10px;
  padding-left: 4px;
}

.zb541fsection_band .zb541fstep::marker {
  color: #d4c08a;
}

.zb541ffigure_band .zb541fimg {
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.zb541fsection_band .zb541fcaption_light {
  color: #94a3b8;
}

.zb541fcaption_light {
  color: #475569;
}

.zb541ffaq_list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* FAQ：浅石板底，与上下白/灰区区分 */
section#zb541ffaq {
  background: #f1f5f9;
  border-top: 1px solid rgba(15, 23, 42, 0.05);
}

section#zb541farticles {
  border-top: 1px solid rgba(15, 23, 42, 0.05);
}

section#zb541fplatform {
  background: #ffffff;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

section#zb541fflow {
  background: linear-gradient(180deg, #eef2f6 0%, #e8edf3 100%);
  border-top: 1px solid rgba(15, 23, 42, 0.05);
  border-bottom: 1px solid rgba(15, 23, 42, 0.05);
}

section#zb541fsecurity {
  background: #ffffff;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
}

.zb541ffaq_item {
  padding: 22px 24px;
  background: #ffffff;
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.04);
}

.zb541ffaq_q {
  margin: 0 0 10px;
  font-size: 1.05rem;
  color: #0f172a;
  font-weight: 600;
}

.zb541ffaq_q {
  cursor: pointer;
  display: block;
  position: relative;
  padding-right: 36px;
}

.zb541ffaq_q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  font-weight: 800;
  color: #1d4ed8;
  transition: transform 0.2s ease;
}

.zb541ffaq_toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.zb541ffaq_a_wrap {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.zb541ffaq_toggle:checked ~ .zb541ffaq_a_wrap {
  max-height: min(72vh, 520px);
}

.zb541ffaq_toggle:checked + .zb541ffaq_q::after {
  transform: translateY(-50%) rotate(45deg);
}

.zb541ffaq_a {
  margin: 0;
  color: #64748b;
  font-size: 0.9375rem;
}

/* 页脚：近黑底收束，与上方浅色形成收边 */
.zb541ffooter {
  padding: 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: linear-gradient(180deg, #0a0f1a 0%, #06090f 100%);
}

.zb541ffooter_text {
  margin: 0;
  text-align: center;
  font-size: 0.8125rem;
  color: #64748b;
  letter-spacing: 0.02em;
}

.zb541ffooter_link {
  color: #e2e8f0;
  text-decoration: none;
  border-bottom: 1px solid rgba(226, 232, 240, 0.25);
}

.zb541ffooter_link:hover,
.zb541ffooter_link:focus-visible {
  color: #ffffff;
  border-bottom-color: rgba(255, 255, 255, 0.45);
  outline: none;
}

.zb541flinks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.zb541flinks_item {
  margin: 0;
}

.zb541flinks_a {
  display: block;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(15, 23, 42, 0.06);
  color: #0f172a;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
  transition: transform 0.15s, box-shadow 0.2s, border-color 0.2s;
}

.zb541flinks_a:hover,
.zb541flinks_a:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(37, 99, 235, 0.22);
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
  outline: none;
}

.zb541fad {
  width: 100%;
  padding: 0;
}

@media (max-width: 767px) {
  .zb541flinks {
    grid-template-columns: 1fr;
  }
}

/* 底部收口 CTA */
.zb541ffinal_section {
  padding: 44px 0;
  background:
    radial-gradient(ellipse 120% 80% at 50% 0%, rgba(37, 99, 235, 0.42), transparent 55%),
    linear-gradient(135deg, #070d18 0%, #0f172a 42%, #0b2a5b 100%);
  border-top: 1px solid rgba(37, 99, 235, 0.22);
}

.zb541ffinal_inner {
  max-width: 980px;
  margin: 0 auto;
  text-align: center;
}

.zb541ffinal_title {
  margin: 0 0 10px;
  color: #ffffff;
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.zb541ffinal_text {
  margin: 0 auto 22px;
  max-width: 720px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1rem;
  line-height: 1.7;
}

.zb541ffinal_buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.zb541ffinal_btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 170px;
  height: 46px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.15);
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
}

.zb541ffinal_btn:hover,
.zb541ffinal_btn:focus-visible {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  outline: none;
}

.zb541ffinal_btn_icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.92);
}

.zb541ffinal_btn_pc {
  border-color: rgba(148, 163, 184, 0.35);
  background: rgba(148, 163, 184, 0.14);
}

.zb541ffinal_btn_apple {
  border-color: rgba(56, 189, 248, 0.55);
  background: rgba(56, 189, 248, 0.18);
}

.zb541ffinal_btn_android {
  border-color: rgba(34, 197, 94, 0.55);
  background: rgba(34, 197, 94, 0.16);
}

@media (max-width: 767px) {
  .zb541ffinal_section {
    padding: 34px 0;
  }

  .zb541ffinal_text {
    margin-bottom: 18px;
    font-size: 0.95rem;
  }

  .zb541ffinal_buttons {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .zb541ffinal_btn {
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .zb541fsection {
    padding: 40px 0;
  }

  .zb541fhero {
    padding: 36px 0 48px;
  }

  .zb541fsection_head {
    margin-bottom: 28px;
  }

  .zb541finner_main {
    padding: 20px 0 36px;
  }

  .zb541fcontainer,
  .zb541fcontainer_narrow {
    padding-left: 16px;
    padding-right: 16px;
  }

  .zb541fnav_brand {
    max-width: calc(100% - 56px);
    min-width: 0;
  }

  .zb541fnav_brand_text {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .zb541fnav_burger {
    display: inline-flex;
    flex-shrink: 0;
  }

  .zb541fnav_menu {
    visibility: hidden;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    pointer-events: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    z-index: 101;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 16px;
    box-shadow: 0 18px 60px rgba(15, 23, 42, 0.14);
    padding: 0;
    transition: opacity 0.2s ease, max-height 0.25s ease, visibility 0.2s ease;
  }

  .zb541fnav_toggle:checked ~ .zb541fnav_menu {
    visibility: visible;
    opacity: 1;
    max-height: min(78vh, 720px);
    pointer-events: auto;
    padding: 12px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .zb541fnav_list {
    width: 100%;
    flex-direction: column;
    gap: 4px;
  }

  .zb541fnav_link {
    display: block;
    width: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
    padding: 12px 10px;
    border-bottom: 0;
    border-radius: 12px;
  }

  .zb541fnav_link:hover,
  .zb541fnav_link:focus-visible {
    background: rgba(37, 99, 235, 0.08);
    border-bottom-color: transparent;
  }

  .zb541fplatform_copy .zb541fhero_actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .zb541fplatform_copy .zb541fhero_actions .zb541fbtn_app {
    width: 100%;
    min-width: 0;
  }

  .zb541ffaq_item {
    padding: 16px 18px;
  }

  .zb541fsecurity_item {
    padding: 18px 16px;
  }

  .zb541fpagebar {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .zb541farticle_h1 {
    overflow-wrap: anywhere;
  }

  .zb541fhero_actions {
    flex-direction: column;
    align-items: stretch;
  }

  .zb541fbtn_app {
    min-width: 0;
    width: 100%;
  }
}

@media (max-width: 479px) {
  .zb541fhome_articles {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .zb541fhome_article_title {
    font-size: 0.875rem;
  }

  .zb541fdownload_main_body {
    padding: 16px 16px 18px;
  }

  .zb541fcard_download_body {
    padding: 16px 16px 18px;
  }

  .zb541fsection_title {
    font-size: clamp(1.15rem, 5.5vw, 1.45rem);
  }

  .zb541fhero_title {
    font-size: clamp(1.35rem, 6.5vw, 1.9rem);
  }

  .zb541ffeatures_shell {
    padding: 14px;
  }

  .zb541fmini_card {
    padding: 14px 16px;
  }
}

@media (min-width: 768px) {
  .zb541fnav_burger {
    display: none;
  }

  .zb541fnav_menu {
    display: block;
    position: static;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }
}

@media (min-width: 768px) {
  .zb541fhero_inner {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .zb541fdownload_split {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 300px);
    gap: 24px;
    align-items: stretch;
  }

  .zb541fdownload_side {
    position: sticky;
    top: 88px;
    align-self: start;
  }

  .zb541fdownload_main_inner {
    flex-direction: row;
    align-items: stretch;
    min-height: 260px;
  }

  .zb541fdownload_main_media {
    flex: 0 0 42%;
    max-width: 42%;
    padding: 16px 0 16px 16px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.06), transparent);
    display: flex;
    align-items: center;
  }

  .zb541fdownload_main_media .zb541fimg {
    border-radius: 14px;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    min-height: 200px;
  }

  .zb541fdownload_main_body {
    flex: 1;
    padding: 22px 22px 22px 8px;
    justify-content: center;
  }

  .zb541fplatform_panel_desk {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    padding: 24px 22px 24px 22px;
    align-items: center;
  }

  .zb541fplatform_rows {
    gap: 20px;
  }

  .zb541fplatform_panel_mob {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 20px;
    align-items: center;
    padding: 20px 22px;
  }

  .zb541fplatform_panel_mob::before {
    grid-column: 1 / -1;
    grid-row: 1;
    padding: 0 0 8px;
  }

  .zb541fplatform_panel_mob .zb541fplatform_media {
    grid-column: 1;
    grid-row: 2;
    padding: 0;
  }

  .zb541fplatform_panel_mob .zb541fplatform_copy {
    grid-column: 2;
    grid-row: 2;
    margin: 0;
    padding: 18px 20px;
  }

  .zb541fgrid_2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .zb541fgrid_3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .zb541fgrid_4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .zb541fmini_cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .zb541fsecurity_grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 18px;
  }

  .zb541fsecurity_item:nth-child(1) {
    grid-column: 1 / -1;
    padding: 24px 26px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid rgba(15, 23, 42, 0.08);
  }

  .zb541fsecurity_item:nth-child(2) {
    grid-column: 1 / span 3;
  }

  .zb541fsecurity_item:nth-child(3) {
    grid-column: 4 / span 3;
  }

  .zb541fsecurity_item:nth-child(4) {
    grid-column: 2 / span 4;
    justify-self: center;
    width: 100%;
    max-width: 720px;
    margin: 0;
  }

  .zb541ffeatures_layout {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }

  .zb541ffeatures_shell {
    padding: 22px;
  }

  .zb541fflow_shell {
    padding: 24px;
  }

  #zb541fflow .zb541fflow_shell {
    padding: 0;
  }

  .zb541fflow_grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 26px;
  }

  #zb541fflow .zb541fflow_grid {
    grid-template-columns: 1fr;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
  }

  .zb541fflow_card:nth-child(2n) {
    transform: translateY(20px);
    border-color: rgba(13, 148, 136, 0.18);
  }

  #zb541fflow .zb541fflow_card:nth-child(2n) {
    transform: none;
    border-color: transparent;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  }

  .zb541fflow_card:nth-child(2n) .zb541fflow_num {
    background: linear-gradient(135deg, #0d9488, #0f766e);
    box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
  }

  .zb541fflow_card:nth-child(2n) .zb541fflow_icon {
    color: #0f766e;
    background: rgba(13, 148, 136, 0.1);
    border-color: rgba(13, 148, 136, 0.24);
  }

  .zb541fflow_card:nth-child(2n)::after {
    left: -11px;
    right: auto;
    background: rgba(13, 148, 136, 0.28);
  }

  #zb541fflow .zb541fflow_card:nth-child(2n)::after {
    display: none;
  }

  .zb541ffigure_tall {
    margin-left: 0;
    margin-right: 0;
    justify-self: end;
  }

  .zb541fband_inner {
    grid-template-columns: 1fr 1fr;
  }

  .zb541fhome_articles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 当前导航高亮（首页 {jz:show} 与栏目 currentcss） */
.zb541fnav_item.zb541fthis .zb541fnav_link {
  color: #1d4ed8;
  font-weight: 600;
  border-bottom-color: rgba(29, 78, 216, 0.45);
}

/* 首页文章资讯：两行 × 五条（大屏） */
.zb541fhome_articles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
}

.zb541fhome_article_card {
  margin: 0;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 14px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}

.zb541fhome_article_card:hover {
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
  transform: translateY(-2px);
}

.zb541fhome_article_link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

.zb541fhome_article_thumb {
  position: relative;
  background: #f1f5f9;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.zb541fhome_article_imgwrap {
  display: block;
  width: 100%;
  height: 100%;
}

.zb541fhome_article_imgwrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.zb541fhome_article_thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.zb541fhome_article_body {
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 0;
}

.zb541fhome_article_title {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #0f172a;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 内页：主栏 + 侧栏 */
.zb541finner_main {
  padding: 28px 0 48px;
}

.zb541finner_layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.zb541finner_primary {
  min-width: 0;
}

.zb541finner_aside {
  min-width: 0;
}

.zb541farticle_head {
  margin-bottom: 20px;
}

.zb541farticle_kicker {
  margin: 0 0 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #64748b;
}

.zb541farticle_catlink {
  color: #1d4ed8;
  text-decoration: none;
}

.zb541farticle_catlink:hover,
.zb541farticle_catlink:focus-visible {
  text-decoration: underline;
  outline: none;
}

.zb541farticle_h1 {
  margin: 0 0 12px;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  line-height: 1.3;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.zb541farticle_meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: 0.875rem;
  color: #64748b;
}

.zb541farticle_meta_item small {
  color: #94a3b8;
  font-weight: 500;
}

.zb541farticle_banner_slot {
  margin-bottom: 18px;
}

.zb541farticle_litpic {
  margin: 0 0 22px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.zb541farticle_litpic img[src=""],
.zb541farticle_litpic img:not([src]) {
  display: none;
}

/* 非正文图片：统一按缩略图展示（标签 litpic / imgwidth+image；正文 .zb541farticle_content 内不受影响） */
.zb541fthumb_img,
.zb541farticle_litpic .zb541fthumb_img,
.zb541fhome_article_imgwrap img,
.zb541flist_thumb img,
.zb541fside_thumb_link img,
.zb541flike_thumb img,
.zb541farticle_banner_slot img {
  object-fit: cover;
}

.zb541farticle_litpic .zb541fthumb_img {
  width: 100%;
  max-height: min(56vw, 420px);
}

.zb541farticle_banner_slot img {
  max-width: 100%;
  max-height: 380px;
}

.zb541farticle_content img {
  object-fit: initial;
  max-height: none;
}

.zb541fimages_gallery .zb541fthumb_img {
  width: 100%;
  max-height: min(48vw, 360px);
}

.zb541fprose_inner {
  max-width: none;
  margin: 0 0 28px;
  text-align: left;
  color: #334155;
  font-size: 1rem;
  line-height: 1.85;
}

.zb541fprose_inner p {
  margin: 0 0 14px;
}

.zb541fprose_inner table,
.zb541farticle_content table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.zb541fprose_inner pre,
.zb541farticle_content pre {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.zb541fprose_inner img,
.zb541farticle_content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.zb541fimages_gallery {
  display: grid;
  gap: 16px;
  margin-bottom: 24px;
}

.zb541fimages_item {
  margin: 0;
  padding: 14px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 14px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
}

.zb541fdiyfield {
  margin-bottom: 20px;
  padding: 16px;
  border-radius: 14px;
  background: #f8fafc;
  border: 1px dashed rgba(37, 99, 235, 0.22);
  font-size: 0.9375rem;
  color: #475569;
}

.zb541fmeta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.zb541fmeta-tags_compact {
  margin-bottom: 0;
}

.zb541ftagitem a {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.08);
  color: #1d4ed8;
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 600;
  border: 1px solid rgba(37, 99, 235, 0.12);
}

.zb541ftagitem a:hover,
.zb541ftagitem a:focus-visible {
  background: rgba(37, 99, 235, 0.14);
  outline: none;
}

.zb541fside_tags a {
  margin-right: 8px;
}

.zb541fprenext {
  display: block;
  margin: 8px 0 28px;
  padding: 16px;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 6px 22px rgba(15, 23, 42, 0.05);
}

.zb541fprenext_inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9375rem;
  color: #475569;
}

.zb541fprenext_inner a {
  color: #1d4ed8;
  text-decoration: none;
  font-weight: 600;
}

.zb541fprenext_inner a:hover,
.zb541fprenext_inner a:focus-visible {
  text-decoration: underline;
  outline: none;
}

.zb541fprenext_inner p,
.zb541fprenext_inner li {
  margin: 0;
}

.zb541flike_section {
  margin-top: 8px;
}

.zb541flike_list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.zb541flike_item {
  margin: 0;
  padding: 14px 16px;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
}

.zb541flike_item_media {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: start;
}

.zb541flike_thumb {
  display: block;
  border-radius: 12px;
  overflow: hidden;
  background: #f1f5f9;
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.zb541flike_thumb img {
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

.zb541flike_body {
  min-width: 0;
}

.zb541flike_link {
  font-weight: 600;
  color: #0f172a;
  text-decoration: none;
}

.zb541flike_link:hover,
.zb541flike_link:focus-visible {
  color: #1d4ed8;
  outline: none;
}

.zb541flike_desc {
  margin: 8px 0 0;
  font-size: 0.875rem;
  color: #64748b;
  line-height: 1.6;
}

.zb541fside_block {
  margin-bottom: 20px;
  padding: 16px 16px 14px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 8px 26px rgba(15, 23, 42, 0.06);
}

.zb541fside_title {
  margin: 0 0 12px;
  font-size: 1rem;
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.01em;
}

.zb541fside_list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.zb541fside_list_thumb {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.zb541fside_li {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 10px;
  align-items: start;
}

@media (max-width: 420px) {
  .zb541fside_li {
    grid-template-columns: 72px 1fr;
    gap: 8px;
  }
}

.zb541fside_thumb_link {
  display: block;
  border-radius: 10px;
  overflow: hidden;
  background: #f1f5f9;
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.zb541fside_thumb_link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 5 / 3;
}

.zb541fside_title_a {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #0f172a;
  text-decoration: none;
  line-height: 1.45;
}

.zb541fside_title_a:hover,
.zb541fside_title_a:focus-visible {
  color: #1d4ed8;
  outline: none;
}

.zb541fside_desc {
  margin: 4px 0 0;
  font-size: 0.75rem;
  color: #64748b;
  line-height: 1.5;
}

.zb541fchannelart_card {
  padding: 10px 12px;
  border-radius: 12px;
  background: #f8fafc;
  border: 1px solid rgba(15, 23, 42, 0.05);
  margin-bottom: 10px;
}

.zb541fchannelart_parent {
  display: inline-block;
  margin-bottom: 8px;
  font-weight: 700;
  color: #1d4ed8;
  text-decoration: none;
}

.zb541fchannelart_sub {
  list-style: none;
  margin: 0;
  padding: 0;
}

.zb541fchannelart_li {
  margin: 0 0 6px;
  font-size: 0.875rem;
}

.zb541fchannelart_li a {
  color: #475569;
  text-decoration: none;
}

.zb541fchannelart_li a:hover,
.zb541fchannelart_li a:focus-visible {
  color: #1d4ed8;
  outline: none;
}

.zb541fside_type_line {
  margin: 0;
  font-size: 0.9375rem;
}

.zb541fside_type_a {
  color: #1d4ed8;
  font-weight: 600;
  text-decoration: none;
}

/* 列表页 */
.zb541flist_head {
  margin-bottom: 18px;
}

.zb541flist_lead {
  margin: 0;
  max-width: 52em;
  color: #64748b;
  font-size: 0.9375rem;
  line-height: 1.65;
}

.zb541flistbox {
  margin-bottom: 24px;
}

.zb541flist_items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.zb541flist_item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 16px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.06);
}

.zb541flist_media {
  min-width: 0;
}

.zb541flist_thumb {
  display: block;
  border-radius: 14px;
  overflow: hidden;
  background: #f1f5f9;
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.zb541flist_thumb img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.zb541flist_body {
  min-width: 0;
}

.zb541flist_typeline {
  margin: 0 0 6px;
  font-size: 0.8125rem;
}

.zb541flist_typelink {
  color: #1d4ed8;
  text-decoration: none;
  font-weight: 600;
}

.zb541flist_title {
  margin: 0 0 8px;
  font-size: 1.125rem;
  line-height: 1.35;
}

.zb541flist_title_a {
  color: #0f172a;
  text-decoration: none;
}

.zb541flist_title_a:hover,
.zb541flist_title_a:focus-visible {
  color: #1d4ed8;
  outline: none;
}

.zb541flist_intro {
  margin: 0 0 10px;
  font-size: 0.9375rem;
  color: #64748b;
  line-height: 1.65;
}

.zb541flist_info {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-size: 0.8125rem;
  color: #64748b;
}

.zb541flist_info_item small {
  color: #94a3b8;
}

/* 分页：左 / 中 / 右 三列 */
.zb541fpagebar {
  margin-top: 8px;
  padding: 14px 12px;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 6px 22px rgba(15, 23, 42, 0.05);
}

.zb541fpagebar_lr {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: center;
}

.zb541fpagebar_side .pagelist,
.zb541fpagebar_center .pagelist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.zb541fpagebar_side_left .pagelist {
  justify-content: flex-start;
}

.zb541fpagebar_center .pagelist {
  justify-content: center;
}

.zb541fpagebar_side_right .pagelist {
  justify-content: flex-end;
}

.zb541fpagebar .pagelist li,
.zb541fpagebar .pagelist span,
.zb541fpagebar .pagelist a {
  font-size: 0.875rem;
}

.zb541fpagebar .pagelist a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: #f8fafc;
  color: #0f172a;
  text-decoration: none;
  font-weight: 600;
}

.zb541fpagebar .pagelist a:hover,
.zb541fpagebar .pagelist a:focus-visible {
  border-color: rgba(37, 99, 235, 0.35);
  color: #1d4ed8;
  outline: none;
}

@media (min-width: 768px) {
  .zb541finner_layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
  }

  .zb541finner_aside {
    position: sticky;
    top: 84px;
  }

  .zb541flist_item {
    grid-template-columns: minmax(200px, 280px) 1fr;
    align-items: start;
  }

  .zb541fprenext {
    display: block;
  }

  .zb541flike_item_media {
    grid-template-columns: 140px 1fr;
  }

  .zb541flike_thumb img {
    aspect-ratio: 1;
    max-height: 120px;
  }

  .zb541fpagebar_lr {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 10px 16px;
  }

  .zb541fpagebar_center {
    justify-self: center;
  }

  .zb541fpagebar_side_left {
    justify-self: start;
  }

  .zb541fpagebar_side_right {
    justify-self: end;
  }
}

@media (min-width: 1024px) {
  .zb541fhome_articles {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .zb541finner_layout {
    grid-template-columns: minmax(0, 1fr) 320px;
  }

  .zb541fgrid_4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .zb541fplatform_rows {
    gap: 34px;
  }

  .zb541fplatform_panel_desk {
    padding: 28px 30px;
  }

  .zb541fplatform_panel_mob {
    padding: 24px 26px;
  }

  .zb541fmini_cards {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    grid-template-rows: auto auto;
    gap: 14px 16px;
    align-items: stretch;
  }

  .zb541fmini_card_lead {
    grid-row: 1 / span 2;
    grid-column: 1;
    padding: 22px 22px;
    background: linear-gradient(165deg, #ffffff 0%, #f1f5f9 100%);
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  }

  .zb541fmini_card:not(.zb541fmini_card_lead) {
    grid-column: 2;
  }

  .zb541fmini_card:nth-child(2) {
    grid-row: 1;
  }

  .zb541fmini_card:nth-child(3) {
    grid-row: 2;
  }

  .zb541fhero {
    padding: 64px 0 80px;
  }

  .zb541fsection {
    padding: 72px 0;
  }
}