/* ==========================================================================
   飞鸟机场 (feiniao-jichang.ink) 核心样式表
   世界观：樱花车站 (Sakura Station)
   画风：绘本蜡笔 (Crayon Sketch / Hand-drawn warm paper)
   版式原型：游戏 HUD (Status gauges, bracket corners, retro station console)
   主色相：285° (紫罗兰 / 紫藤花 #7c3aed) + 互补色相 105° (嫩茶绿 #65a30d)
   规范：纯原生 CSS3，零中文外部字体，类名严格使用语义化单词
   ========================================================================== */

:root {
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* 主色系 285° (紫藤花 / 车站列车紫) */
  --color-primary: #7c3aed;
  --color-primary-hover: #6d28d9;
  --color-primary-light: #f5f3ff;
  --color-primary-border: #ddd6fe;

  /* 互补色系 105° (嫩茶草绿 / 车站出站绿灯) */
  --color-complement: #65a30d;
  --color-complement-hover: #4d7c0f;
  --color-complement-light: #f7fee7;
  --color-complement-border: #d9f99d;

  /* 蜡笔绘本纸张质感与文字 */
  --color-bg: #faf8f5;
  --color-surface: #ffffff;
  --color-surface-soft: #f4efe9;
  --color-text-main: #1e1b2e;
  --color-text-muted: #55506b;
  --color-text-light: #807b96;
  --color-border: #e6dfd5;
  --color-border-hud: #7c3aed;

  /* HUD 界面圆角与边框 */
  --radius-hud-sm: 4px;
  --radius-hud-md: 8px;
  --radius-hud-lg: 14px;
  --shadow-hud: 0 4px 16px rgba(124, 58, 237, 0.08), 0 1px 3px rgba(30, 27, 46, 0.05);
  --shadow-hover: 0 8px 24px rgba(124, 58, 237, 0.16), 0 2px 6px rgba(30, 27, 46, 0.08);
  --transition-normal: 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-stack);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-normal);
}

a:hover {
  color: var(--color-primary-hover);
}

ul, ol {
  list-style: none;
}

.layout-container {
  width: 100%;
  max-width: 1140px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 按钮规范与 CTA 光泽扫过动效 */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-hud-sm);
  border: 1px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--transition-normal);
  text-align: center;
  line-height: 1.4;
  white-space: nowrap;
}

.button-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 2px 6px rgba(124, 58, 237, 0.3);
}

.button-primary:hover {
  background-color: var(--color-primary-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
}

/* 辅助动效：CTA 光泽扫过 */
.button-primary::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -60%;
  width: 40%;
  height: 200%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: rotate(25deg);
  pointer-events: none;
}

.button-primary:hover::after {
  animation: shineSweep 0.75s ease;
}

@keyframes shineSweep {
  0% { left: -60%; }
  100% { left: 140%; }
}

.button-outline {
  background-color: #ffffff;
  color: var(--color-text-main);
  border-color: var(--color-border);
}

.button-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.button-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.button-lg {
  padding: 12px 28px;
  font-size: 1.05rem;
  border-radius: var(--radius-hud-md);
}

.button-block {
  width: 100%;
}

/* ==========================================================================
   Header 导航栏 (樱花车站检票口 HUD)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 248, 245, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.brand-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 4px;
  border: 1px solid var(--color-primary-border);
  margin-left: 2px;
}

.main-navigation {
  display: none;
}

@media (min-width: 860px) {
  .main-navigation {
    display: block;
  }
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
}

.header-action-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-action-group .button {
  display: none;
}

@media (min-width: 640px) {
  .header-action-group .button {
    display: inline-flex;
  }
}

.burger-menu-button {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 32px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 2px;
}

@media (min-width: 860px) {
  .burger-menu-button {
    display: none;
  }
}

.burger-menu-button span {
  display: block;
  width: 100%;
  height: 2.5px;
  background-color: var(--color-text-main);
  border-radius: 2px;
}

.mobile-drawer-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background-color: #ffffff;
  border-bottom: 2px solid var(--color-border);
  padding: 20px;
  box-shadow: var(--shadow-hud);
  z-index: 99;
}

.mobile-drawer-menu.open {
  display: block;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 20px;
}

.mobile-nav-link {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-text-main);
  display: block;
  padding: 6px 0;
}

/* ==========================================================================
   Hero 首屏 (樱花车站发车台 + 招牌动效：光束扫射)
   ========================================================================== */
.hero-station-section {
  padding: 56px 0 64px;
  background: linear-gradient(180deg, #ffffff 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

/* 招牌动效：光束扫射 */
.hero-station-section::before {
  content: "";
  position: absolute;
  top: -60%;
  left: -20%;
  width: 60%;
  height: 220%;
  background: linear-gradient(120deg, transparent, rgba(221, 214, 254, 0.3), transparent);
  transform: rotate(20deg);
  pointer-events: none;
  animation: raySweep 7s infinite ease-in-out;
}

@keyframes raySweep {
  0% { transform: translateX(-100%) rotate(20deg); opacity: 0; }
  20% { opacity: 0.8; }
  50% { transform: translateX(200%) rotate(20deg); opacity: 0.8; }
  100% { transform: translateX(350%) rotate(20deg); opacity: 0; }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
  }
}

.hud-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  border: 1px solid var(--color-primary-border);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 18px;
}

.hero-title {
  font-size: 2.15rem;
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-main);
  margin-bottom: 16px;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: 2.7rem;
  }
}

.hero-title-accent {
  color: var(--color-primary);
  display: inline-block;
  border-bottom: 3px dashed var(--color-complement);
}

.hero-subtitle {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: 28px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.hero-trust-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--color-border);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.trust-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-complement);
  flex-shrink: 0;
}

/* 樱花车站 HUD 仪表盘与 Q 版列车长卡片 */
.hud-console-card {
  background-color: var(--color-surface);
  border: 2px solid var(--color-border-hud);
  border-radius: var(--radius-hud-md);
  box-shadow: var(--shadow-hud);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal);
}

/* 辅助动效：卡片微距悬停倾斜 */
.hud-console-card:hover {
  transform: perspective(600px) rotateX(2deg) rotateY(-2deg) translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.hud-card-header {
  background-color: var(--color-primary-light);
  padding: 12px 18px;
  border-bottom: 2px solid var(--color-primary-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hud-station-indicator {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
}

.hud-signal-status {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-complement);
}

.hud-card-body {
  padding: 24px;
}

.chibi-mascot-box {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px;
  background-color: #faf5ff;
  border: 1px dashed var(--color-primary-border);
  border-radius: var(--radius-hud-sm);
  margin-bottom: 18px;
}

.chibi-avatar {
  width: 60px;
  height: 60px;
  flex-shrink: 0;
}

.chibi-speech {
  font-size: 0.85rem;
  color: var(--color-text-main);
  line-height: 1.45;
}

.hud-status-meters {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.meter-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meter-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

.meter-track {
  height: 8px;
  background-color: var(--color-surface-soft);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.meter-fill {
  height: 100%;
  border-radius: 4px;
}

.meter-fill-purple {
  width: 96%;
  background-color: var(--color-primary);
}

.meter-fill-green {
  width: 94%;
  background-color: var(--color-complement);
}

/* ==========================================================================
   中间模块通用骨架
   ========================================================================== */
.content-section {
  padding: 72px 0;
}

.content-section-alt {
  background-color: var(--color-surface-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-heading-box {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 12px;
}

@media (min-width: 640px) {
  .section-title {
    font-size: 2.15rem;
  }
}

.section-desc {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   中间模块 1: 流媒体支持 (streaming-section)
   ========================================================================== */
.streaming-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (min-width: 640px) {
  .streaming-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 960px) {
  .streaming-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.streaming-item-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-hud-sm);
  padding: 18px 12px;
  text-align: center;
  box-shadow: var(--shadow-hud);
  transition: transform var(--transition-normal);
}

.streaming-item-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-border);
}

.streaming-icon {
  width: 32px;
  height: 32px;
  margin: 0 auto 10px;
  color: var(--color-primary);
}

.streaming-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 4px;
}

.streaming-status {
  font-size: 0.75rem;
  color: var(--color-complement);
  font-weight: 600;
}

/* ==========================================================================
   中间模块 2: FAQ (按分类分组形态)
   ========================================================================== */
.faq-groups-wrapper {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.faq-group-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-border);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.faq-accordion-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-hud-sm);
  overflow: hidden;
  transition: var(--transition-normal);
}

.faq-accordion-item:hover {
  border-color: var(--color-primary-border);
}

.faq-trigger-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: transparent;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-main);
  text-align: left;
  cursor: pointer;
  gap: 16px;
}

.faq-chevron {
  width: 18px;
  height: 18px;
  color: var(--color-text-light);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-accordion-item.is-open .faq-chevron {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-content-box {
  display: none;
  padding: 0 20px 18px;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.faq-accordion-item.is-open .faq-content-box {
  display: block;
}

/* ==========================================================================
   中间模块 3: 人群对照 (学生 / 上班族 / 商务 三列)
   ========================================================================== */
.audience-matrix-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .audience-matrix-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.audience-card {
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-hud-md);
  padding: 28px 22px;
  box-shadow: var(--shadow-hud);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal);
}

.audience-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary-border);
}

.audience-header {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--color-border);
}

.audience-role {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-main);
}

.audience-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  background-color: var(--color-complement-light);
  color: var(--color-complement);
  border-radius: 4px;
  margin-top: 6px;
}

.audience-care-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
  flex-grow: 1;
}

.care-item {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.care-item strong {
  color: var(--color-text-main);
}

.audience-recommend-box {
  background-color: var(--color-primary-light);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-hud-sm);
  padding: 12px 14px;
  text-align: center;
}

.audience-recommend-label {
  font-size: 0.78rem;
  color: var(--color-primary);
  font-weight: 600;
}

.audience-recommend-plan {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary-hover);
}

/* ==========================================================================
   中间模块 4: 定价 (4档，月付年付切换标签，推荐中档)
   ========================================================================== */
.pricing-tabs-control {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
}

.pricing-tab-btn {
  padding: 8px 20px;
  font-size: 0.92rem;
  font-weight: 600;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-hud-sm);
  cursor: pointer;
  transition: var(--transition-normal);
}

.pricing-tab-btn.active {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.pricing-grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .pricing-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1020px) {
  .pricing-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pricing-card {
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-hud-md);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-hud);
  transition: transform var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-3px);
}

.pricing-card-recommended {
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.15);
}

.pricing-badge-popular {
  position: absolute;
  top: -12px;
  right: 18px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 4px;
}

.pricing-plan-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 6px;
}

.pricing-plan-target {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.45;
  margin-bottom: 18px;
  min-height: 38px;
}

.pricing-official-box {
  background-color: var(--color-surface-soft);
  padding: 14px 10px;
  border-radius: var(--radius-hud-sm);
  text-align: center;
  margin-bottom: 20px;
}

.pricing-official-hint {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.pricing-official-price {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 4px;
}

.pricing-feature-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-main);
  line-height: 1.4;
}

.pricing-feature-item svg {
  width: 15px;
  height: 15px;
  color: var(--color-complement);
  margin-top: 3px;
  flex-shrink: 0;
}

/* ==========================================================================
   中间模块 5: 特性 (3项，编号列表形态)
   ========================================================================== */
.feature-numbered-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.numbered-feature-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-hud-md);
  padding: 24px 28px;
  display: flex;
  align-items: flex-start;
  gap: 24px;
  box-shadow: var(--shadow-hud);
  transition: transform var(--transition-normal);
}

.numbered-feature-item:hover {
  transform: translateX(4px);
  border-color: var(--color-primary-border);
}

.feature-large-number {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  padding: 8px 14px;
  background-color: var(--color-primary-light);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-hud-sm);
  flex-shrink: 0;
}

.feature-text-group h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 8px;
}

.feature-text-group p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Final CTA
   ========================================================================== */
.final-cta-section {
  padding: 72px 0;
  background: linear-gradient(135deg, #4c1d95 0%, #7c3aed 100%);
  color: #ffffff;
  text-align: center;
}

.final-cta-box {
  max-width: 660px;
  margin: 0 auto;
}

.final-cta-title {
  font-size: 2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.final-cta-desc {
  font-size: 1.02rem;
  color: #ede9fe;
  margin-bottom: 28px;
  line-height: 1.6;
}

.final-cta-section .button-primary {
  background-color: #ffffff;
  color: var(--color-primary);
  border-color: #ffffff;
}

.final-cta-section .button-primary:hover {
  background-color: #faf5ff;
  color: var(--color-primary-hover);
}

/* ==========================================================================
   移动端吸底浮条
   ========================================================================== */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 2px solid var(--color-border);
  padding: 10px 16px;
  box-shadow: 0 -4px 16px rgba(30, 27, 46, 0.08);
  transform: translateY(100%);
  transition: transform 0.25s ease;
}

.mobile-sticky-bar.visible {
  display: block;
  transform: translateY(0);
}

@media (min-width: 769px) {
  .mobile-sticky-bar {
    display: none !important;
  }
}

.mobile-sticky-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mobile-sticky-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.mobile-sticky-desc {
  font-size: 0.76rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Footer 页脚
   ========================================================================== */
.site-footer {
  background-color: #1a1626;
  color: #9b95ab;
  padding: 56px 0 32px;
  margin-top: auto;
  border-top: 2px solid #2e2842;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.6;
  margin-top: 12px;
  max-width: 380px;
}

.footer-column-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-list a {
  font-size: 0.86rem;
  color: #9b95ab;
}

.footer-nav-list a:hover {
  color: #ffffff;
}

.footer-bottom-bar {
  padding-top: 24px;
  border-top: 1px solid #2e2842;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.8rem;
  color: #726b85;
}

@media (min-width: 640px) {
  .footer-bottom-bar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ==========================================================================
   文章与合规内页布局
   ========================================================================== */
.breadcrumb-trail {
  padding: 16px 0;
  font-size: 0.82rem;
  color: var(--color-text-light);
}

.breadcrumb-trail a {
  color: var(--color-text-muted);
}

.breadcrumb-trail a:hover {
  color: var(--color-primary);
}

.breadcrumb-trail span {
  margin: 0 6px;
}

.article-header-box {
  padding: 32px 0 24px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 36px;
}

.article-meta-info {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 14px;
}

.article-main-title {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--color-text-main);
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-intro-box {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  background-color: var(--color-surface-soft);
  padding: 16px 20px;
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-hud-sm) var(--radius-hud-sm) 0;
}

.article-body-wrapper {
  max-width: 820px;
  margin: 0 auto;
}

.article-body-wrapper h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.article-body-wrapper h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text-main);
  margin: 24px 0 10px;
}

.article-body-wrapper p {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-text-main);
  margin-bottom: 18px;
}

.article-body-wrapper ul, .article-body-wrapper ol {
  margin: 0 0 20px 24px;
}

.article-body-wrapper ul {
  list-style-type: disc;
}

.article-body-wrapper ol {
  list-style-type: decimal;
}

.article-body-wrapper li {
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--color-text-main);
  margin-bottom: 8px;
}

.step-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-hud-md);
  padding: 20px;
  margin-bottom: 20px;
}

.step-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.step-badge-num {
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}

.step-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.comparison-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-hud-md);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}

.comparison-table th, .comparison-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background-color: var(--color-surface-soft);
  font-weight: 700;
  color: var(--color-text-main);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.article-end-cta {
  background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
  border: 2px solid var(--color-primary-border);
  border-radius: var(--radius-hud-lg);
  padding: 32px 24px;
  text-align: center;
  margin: 40px 0;
}

.article-end-cta h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 10px;
}

.article-end-cta p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto 20px;
}

.related-reading-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-hud-md);
  padding: 24px;
  margin: 36px 0;
}

.related-reading-box h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 14px;
}

.related-links-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-links-list a {
  font-size: 0.92rem;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.related-links-list a:hover {
  text-decoration: underline;
}

/* Reduced Motion 适配 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}