/* ==========================================================================
   一云梯 (yiyun-ti.wiki) - 核心样式表
   世界观：天空邮局 (Sky Post Office)
   画风：浮世绘新派 (Modern Shin-Hanga)
   版式原型：票根 / 车票 (Boarding Pass & Ticket Stub)
   配色系统：主色相 312° (洋红紫) + 互补色相 132° (冷翠青)
   规范：纯原生 CSS3，零中文外部字体，类名严格前缀 pw-
   ========================================================================== */

:root {
  --pw-font-system: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  
  /* 312° 主色系 (洋红紫 · 邮政封蜡) */
  --pw-primary: #c21882;
  --pw-primary-hover: #a1106a;
  --pw-primary-light: #fdf4fa;
  --pw-primary-border: #f5d0e8;
  
  /* 132° 互补色系 (冷翠青 · 航线标灯) */
  --pw-complement: #1f8a48;
  --pw-complement-hover: #166e38;
  --pw-complement-light: #f0f9f3;
  --pw-complement-border: #c6ebd2;
  
  /* 纸张与墨色 */
  --pw-bg: #fcfbfa;
  --pw-surface: #ffffff;
  --pw-surface-soft: #f8f6f3;
  --pw-surface-paper: #f4efe8;
  --pw-text-main: #18151c;
  --pw-text-muted: #564f5d;
  --pw-text-light: #8b8394;
  --pw-border: #e8e3dc;
  --pw-border-dashed: #d4cdc3;
  
  --pw-max-width: 1140px;
  --pw-radius-sm: 4px;
  --pw-radius-ticket: 8px;
  --pw-shadow-ticket: 0 4px 14px rgba(24, 21, 28, 0.05), 0 1px 3px rgba(24, 21, 28, 0.04);
  --pw-shadow-hover: 0 8px 24px rgba(194, 24, 130, 0.12), 0 2px 6px rgba(24, 21, 28, 0.06);
  --pw-transition: 0.2s 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(--pw-font-system);
  background-color: var(--pw-bg);
  color: var(--pw-text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

ul, ol {
  list-style: none;
}

/* 容器布局 */
.pw-container {
  width: 100%;
  max-width: var(--pw-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ==========================================================================
   天空邮局 Header 导航
   ========================================================================== */
.pw-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(252, 251, 250, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--pw-border);
}

.pw-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}

.pw-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--pw-text-main);
  letter-spacing: -0.01em;
}

.pw-logo svg {
  width: 32px;
  height: 32px;
}

.pw-logo__badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--pw-complement);
  background-color: var(--pw-complement-light);
  border: 1px solid var(--pw-complement-border);
  padding: 1px 6px;
  border-radius: var(--pw-radius-sm);
  margin-left: 4px;
}

.pw-nav {
  display: none;
}

.pw-nav__list {
  display: flex;
  align-items: center;
  gap: 24px;
}

.pw-nav__link {
  font-size: 0.95rem;
  color: var(--pw-text-muted);
  font-weight: 500;
  padding: 6px 0;
  position: relative;
  transition: color var(--pw-transition);
}

.pw-nav__link:hover,
.pw-nav__link--active {
  color: var(--pw-primary);
}

.pw-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 按钮体系与磁吸 CTA */
.pw-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--pw-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--pw-transition);
  white-space: nowrap;
  position: relative;
  text-decoration: none;
  min-height: 44px;
}

.pw-btn--primary {
  background-color: var(--pw-primary);
  color: #ffffff !important;
  box-shadow: 0 2px 6px rgba(194, 24, 130, 0.25);
}

.pw-btn--primary:hover {
  background-color: var(--pw-primary-hover);
  box-shadow: 0 4px 12px rgba(194, 24, 130, 0.35);
}

.pw-btn--outline {
  background-color: transparent;
  border-color: var(--pw-border-dashed);
  color: var(--pw-text-main);
}

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

.pw-btn--complement {
  background-color: var(--pw-complement);
  color: #ffffff !important;
}

.pw-btn--complement:hover {
  background-color: var(--pw-complement-hover);
}

.pw-btn--lg {
  padding: 13px 32px;
  font-size: 1.05rem;
  font-weight: 700;
}

.pw-btn--block {
  width: 100%;
}

.pw-burger,
.pw-menu-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-sm);
  color: var(--pw-text-main);
  cursor: pointer;
  padding: 0;
}

.pw-burger span,
.pw-menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--pw-text-main);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

@media (max-width: 767px) {
  .pw-nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--pw-surface);
    border-bottom: 1px solid var(--pw-border);
    padding: 16px 20px 20px;
    box-shadow: var(--pw-shadow-ticket);
    gap: 14px;
  }
}

/* 移动端菜单抽屉 */
.pw-mobile-drawer {
  display: none;
  background-color: var(--pw-surface);
  border-bottom: 1px solid var(--pw-border);
  padding: 18px 20px 24px;
}

.pw-mobile-drawer.is-open {
  display: block;
}

.pw-mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.pw-mobile-nav__link {
  font-size: 1rem;
  color: var(--pw-text-main);
  font-weight: 600;
  display: block;
  padding: 8px 0;
}

/* ==========================================================================
   Hero 首屏：浮世绘风云海与航程票根
   ========================================================================== */
.pw-hero {
  padding: 56px 0 48px;
  background: radial-gradient(circle at 85% 15%, var(--pw-primary-light) 0%, var(--pw-bg) 60%);
  border-bottom: 1px solid var(--pw-border);
  position: relative;
  overflow: hidden;
}

.pw-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.pw-hero__content {
  text-align: left;
}

.pw-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--pw-primary);
  background-color: var(--pw-primary-light);
  border: 1px solid var(--pw-primary-border);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.pw-hero__title {
  font-size: 2.1rem;
  line-height: 1.28;
  font-weight: 900;
  color: var(--pw-text-main);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.pw-hero__title-accent {
  color: var(--pw-primary);
  position: relative;
  display: inline-block;
}

.pw-hero__title-accent::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 6px;
  background-color: var(--pw-primary-border);
  z-index: -1;
  opacity: 0.6;
}

.pw-hero__subtitle {
  font-size: 1.05rem;
  color: var(--pw-text-muted);
  line-height: 1.68;
  margin-bottom: 28px;
  max-width: 620px;
}

.pw-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

/* 信任指标徽章行 */
.pw-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px dashed var(--pw-border-dashed);
}

.pw-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--pw-text-muted);
}

.pw-badge-item svg {
  width: 18px;
  height: 18px;
  color: var(--pw-complement);
  flex-shrink: 0;
}

/* Hero 右侧：天空邮局局部特写票根卡 (Vignette Ticket) */
.pw-ticket-card {
  background-color: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-ticket);
  box-shadow: var(--pw-shadow-ticket);
  position: relative;
  overflow: hidden;
}

.pw-ticket-header {
  background: linear-gradient(135deg, #2a2233 0%, #18151c 100%);
  color: #ffffff;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pw-ticket-flight {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #f5d0e8;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pw-ticket-status {
  font-size: 0.75rem;
  font-weight: 600;
  color: #6ee7b7;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 2px 8px;
  border-radius: 10px;
}

.pw-ticket-body {
  padding: 24px 20px;
}

/* 浮世绘风局部特写图框 */
.pw-vignette-frame {
  background: var(--pw-surface-paper);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-sm);
  padding: 20px;
  margin-bottom: 20px;
  position: relative;
}

.pw-vignette-art {
  display: flex;
  justify-content: center;
  align-items: center;
}

.pw-vignette-caption {
  font-size: 0.82rem;
  color: var(--pw-text-muted);
  text-align: center;
  margin-top: 10px;
  font-style: italic;
}

.pw-ticket-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-bottom: 18px;
}

.pw-meta-field__label {
  font-size: 0.75rem;
  color: var(--pw-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
}

.pw-meta-field__val {
  font-size: 1rem;
  font-weight: 700;
  color: var(--pw-text-main);
}

/* 齿孔裁切线 */
.pw-perforated {
  position: relative;
  border-top: 1px dashed var(--pw-border-dashed);
  margin: 0 -20px 18px;
}

.pw-perforated::before,
.pw-perforated::after {
  content: "";
  position: absolute;
  top: -8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--pw-bg);
  border: 1px solid var(--pw-border);
}

.pw-perforated::before {
  left: -9px;
}

.pw-perforated::after {
  right: -9px;
}

.pw-ticket-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.pw-barcode {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 30px;
}

.pw-barcode span {
  display: block;
  background-color: var(--pw-text-main);
  height: 100%;
}

/* ==========================================================================
   模块通用标准与版式
   ========================================================================== */
.pw-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--pw-border);
}

.pw-section--paper {
  background-color: var(--pw-surface-paper);
}

.pw-section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
}

.pw-section-kicker {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--pw-primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.pw-section-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--pw-text-main);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

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

/* 网格辅助 */
.pw-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.pw-grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

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

/* ==========================================================================
   模块 1：AI 支持 (#ai-support)
   ========================================================================== */
.pw-ai-card {
  background-color: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-ticket);
  padding: 24px 20px;
  transition: all var(--pw-transition);
  display: flex;
  flex-direction: column;
}

.pw-ai-card:hover {
  border-color: var(--pw-primary);
  box-shadow: var(--pw-shadow-hover);
}

.pw-ai-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.pw-ai-card__name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--pw-text-main);
}

.pw-ai-card__badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--pw-primary);
  background-color: var(--pw-primary-light);
  border: 1px solid var(--pw-primary-border);
  padding: 2px 8px;
  border-radius: 4px;
}

.pw-ai-card__scene {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--pw-complement);
  margin-bottom: 8px;
}

.pw-ai-card__desc {
  font-size: 0.9rem;
  color: var(--pw-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   模块 2：定价 (#pricing) - 3档并列票卡
   ========================================================================== */
.pw-pricing-ticket {
  background-color: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-ticket);
  box-shadow: var(--pw-shadow-ticket);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--pw-transition);
}

.pw-pricing-ticket--popular {
  border: 2px solid var(--pw-primary);
  box-shadow: var(--pw-shadow-hover);
}

.pw-pricing-ribbon {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--pw-primary);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 2px 14px;
  border-radius: 12px;
  white-space: nowrap;
}

.pw-pricing-ticket__header {
  padding: 28px 24px 20px;
  text-align: center;
}

.pw-pricing-ticket__title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.pw-pricing-ticket__target {
  font-size: 0.85rem;
  color: var(--pw-text-muted);
  margin-bottom: 16px;
}

.pw-pricing-ticket__price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.pw-price-sym {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--pw-text-main);
}

.pw-price-num {
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1;
  color: var(--pw-text-main);
}

.pw-price-per {
  font-size: 0.88rem;
  color: var(--pw-text-light);
}

.pw-pricing-ticket__features {
  padding: 0 24px;
  margin-bottom: 24px;
  flex-grow: 1;
}

.pw-pricing-ticket__features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--pw-text-muted);
  margin-bottom: 12px;
}

.pw-pricing-ticket__features svg {
  width: 18px;
  height: 18px;
  color: var(--pw-complement);
  flex-shrink: 0;
  margin-top: 2px;
}

.pw-pricing-ticket__action {
  padding: 0 24px 28px;
}

/* ==========================================================================
   模块 3：人群对照 (#audience)
   ========================================================================== */
.pw-matrix-card {
  background-color: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-ticket);
  padding: 24px;
  box-shadow: var(--pw-shadow-ticket);
}

.pw-matrix-card__persona {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--pw-text-main);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--pw-border);
}

.pw-matrix-card__pain {
  font-size: 0.92rem;
  color: var(--pw-text-muted);
  margin-bottom: 12px;
}

.pw-matrix-card__solution {
  font-size: 0.92rem;
  color: var(--pw-complement);
  font-weight: 600;
  background-color: var(--pw-complement-light);
  border: 1px solid var(--pw-complement-border);
  padding: 8px 12px;
  border-radius: var(--pw-radius-sm);
}

/* ==========================================================================
   模块 4：特性 (#features) - 编号列表形态
   ========================================================================== */
.pw-feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.pw-feature-row {
  background-color: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-ticket);
  padding: 24px 28px;
  display: flex;
  align-items: flex-start;
  gap: 24px;
  transition: all var(--pw-transition);
}

.pw-feature-row:hover {
  border-color: var(--pw-primary);
  box-shadow: var(--pw-shadow-hover);
}

.pw-feature-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--pw-primary);
  line-height: 1;
  font-family: monospace;
}

.pw-feature-body__title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--pw-text-main);
  margin-bottom: 8px;
}

.pw-feature-body__desc {
  font-size: 0.95rem;
  color: var(--pw-text-muted);
  line-height: 1.68;
}

/* ==========================================================================
   模块 5：使用场景 (#scenarios) - 横向滑动条形态
   ========================================================================== */
.pw-scroll-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 14px;
  scrollbar-width: thin;
  scrollbar-color: var(--pw-primary-border) transparent;
}

.pw-scroll-track::-webkit-scrollbar {
  height: 6px;
}

.pw-scroll-track::-webkit-scrollbar-thumb {
  background-color: var(--pw-primary-border);
  border-radius: 3px;
}

.pw-scenario-ticket {
  flex: 0 0 320px;
  background-color: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-ticket);
  padding: 24px 20px;
  box-shadow: var(--pw-shadow-ticket);
}

.pw-scenario-ticket__tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--pw-primary);
  background-color: var(--pw-primary-light);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.pw-scenario-ticket__title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.pw-scenario-ticket__device {
  font-size: 0.85rem;
  color: var(--pw-complement);
  font-weight: 600;
  margin-bottom: 10px;
}

.pw-scenario-ticket__desc {
  font-size: 0.9rem;
  color: var(--pw-text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   模块 6：FAQ (#faq) - 按分类分组手风琴
   ========================================================================== */
.pw-faq-group {
  margin-bottom: 32px;
}

.pw-faq-group__title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--pw-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pw-faq-group__title::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 18px;
  background-color: var(--pw-primary);
  border-radius: 2px;
}

.pw-faq-item {
  background-color: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}

.pw-faq-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  text-align: left;
  background: transparent;
  border: none;
  font-size: 1rem;
  font-weight: 700;
  color: var(--pw-text-main);
  cursor: pointer;
  min-height: 44px;
}

.pw-faq-btn:hover {
  background-color: var(--pw-surface-soft);
}

.pw-faq-icon {
  width: 20px;
  height: 20px;
  color: var(--pw-text-muted);
  transition: transform var(--pw-transition);
}

.pw-faq-item.is-open .pw-faq-icon {
  transform: rotate(180deg);
}

.pw-faq-answer {
  display: none;
  padding: 0 20px 18px;
  font-size: 0.92rem;
  color: var(--pw-text-muted);
  line-height: 1.7;
  border-top: 1px dashed var(--pw-border-dashed);
}

.pw-faq-item.is-open .pw-faq-answer {
  display: block;
}

/* ==========================================================================
   Final CTA 收尾区域
   ========================================================================== */
.pw-final-cta {
  background: linear-gradient(135deg, #261f2e 0%, #15131a 100%);
  color: #ffffff;
  padding: 68px 0;
  text-align: center;
}

.pw-final-cta__box {
  max-width: 680px;
  margin: 0 auto;
}

.pw-final-cta__kicker {
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: #f5d0e8;
  font-weight: 700;
  margin-bottom: 12px;
  display: block;
}

.pw-final-cta__title {
  font-size: 2rem;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.pw-final-cta__desc {
  font-size: 1.05rem;
  color: #c4bcc9;
  line-height: 1.7;
  margin-bottom: 32px;
}

/* ==========================================================================
   Footer 页脚
   ========================================================================== */
.pw-footer {
  background-color: #121016;
  color: #9c94a6;
  padding: 52px 0 36px;
  font-size: 0.88rem;
  margin-top: auto;
}

.pw-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 36px;
}

.pw-footer-brand p {
  line-height: 1.65;
  color: #9c94a6;
  margin-top: 12px;
}

.pw-footer__col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 14px;
}

.pw-footer__links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pw-footer__links a {
  color: #9c94a6;
}

.pw-footer__links a:hover {
  color: #ffffff;
}

.pw-footer__bottom {
  padding-top: 24px;
  border-top: 1px solid #282430;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 0.82rem;
  color: #726b7c;
}

/* ==========================================================================
   移动端吸底 CTA 栏
   ========================================================================== */
.pw-mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 99;
  background-color: rgba(252, 251, 250, 0.96);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--pw-border);
  padding: 10px 16px;
  box-shadow: 0 -4px 12px rgba(24, 21, 28, 0.08);
}

.pw-mobile-bottom-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.pw-mobile-bottom-bar__text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--pw-text-main);
  line-height: 1.3;
}

.pw-mobile-bottom-bar__sub {
  font-size: 0.75rem;
  color: var(--pw-text-muted);
}

/* ==========================================================================
   文章与合规页通用排版 (Prose & Tutorials)
   ========================================================================== */
.pw-article-header {
  padding: 44px 0 28px;
  background-color: var(--pw-surface);
  border-bottom: 1px solid var(--pw-border);
}

.pw-article-header__box {
  max-width: 820px;
  margin: 0 auto;
}

.pw-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--pw-text-muted);
  margin-bottom: 14px;
}

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

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

.pw-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--pw-text-muted);
  margin-top: 12px;
}

.pw-article-body {
  padding: 52px 0;
}

.pw-article-card {
  max-width: 820px;
  margin: 0 auto;
  background-color: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-ticket);
  box-shadow: var(--pw-shadow-ticket);
  padding: 36px 24px;
}

.pw-prose {
  font-size: 1rem;
  line-height: 1.82;
  color: #24202a;
}

.pw-prose h1 {
  font-size: 1.85rem;
  line-height: 1.32;
  margin-bottom: 18px;
  color: var(--pw-text-main);
}

.pw-prose h2 {
  font-size: 1.38rem;
  line-height: 1.35;
  margin-top: 36px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--pw-border);
  color: var(--pw-text-main);
}

.pw-prose h3 {
  font-size: 1.15rem;
  line-height: 1.4;
  margin-top: 24px;
  margin-bottom: 10px;
  color: var(--pw-text-main);
}

.pw-prose p {
  margin-bottom: 18px;
}

.pw-prose ul, .pw-prose ol {
  margin-bottom: 18px;
  padding-left: 24px;
}

.pw-prose ul {
  list-style: disc;
}

.pw-prose ol {
  list-style: decimal;
}

.pw-prose li {
  margin-bottom: 6px;
}

.pw-prose blockquote {
  border-left: 4px solid var(--pw-primary);
  background-color: var(--pw-surface-soft);
  padding: 14px 18px;
  border-radius: 0 var(--pw-radius-sm) var(--pw-radius-sm) 0;
  margin-bottom: 20px;
  font-size: 0.95rem;
  color: var(--pw-text-muted);
}

.pw-prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 0.92rem;
}

.pw-prose th, .pw-prose td {
  border: 1px solid var(--pw-border);
  padding: 10px 14px;
  text-align: left;
}

.pw-prose th {
  background-color: var(--pw-surface-soft);
  font-weight: 700;
}

.pw-prose code {
  background-color: var(--pw-surface-soft);
  padding: 2px 6px;
  border-radius: var(--pw-radius-sm);
  font-family: monospace;
  font-size: 0.88rem;
  border: 1px solid var(--pw-border);
}

/* 文章文末 CTA 票根盒子 */
.pw-article-cta {
  background-color: var(--pw-primary-light);
  border: 1px solid var(--pw-primary-border);
  border-radius: var(--pw-radius-ticket);
  padding: 26px;
  margin: 36px 0;
  text-align: center;
}

.pw-article-cta h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--pw-text-main);
}

.pw-article-cta p {
  font-size: 0.95rem;
  color: var(--pw-text-muted);
  margin-bottom: 18px;
}

/* 站内互链推荐 */
.pw-related {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px dashed var(--pw-border-dashed);
}

.pw-related h3 {
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.pw-related__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 指南卡片 Ticket */
.pw-guide-ticket {
  background-color: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: var(--pw-radius-ticket);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  transition: all var(--pw-transition);
  box-shadow: var(--pw-shadow-ticket);
}

.pw-guide-ticket:hover {
  border-color: var(--pw-primary);
  box-shadow: var(--pw-shadow-hover);
}

.pw-guide-ticket__thumb {
  margin-bottom: 14px;
  background-color: var(--pw-surface-paper);
  border-radius: 6px;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pw-guide-ticket__tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--pw-primary);
  background-color: var(--pw-primary-light);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
  align-self: flex-start;
}

.pw-guide-ticket__title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
  line-height: 1.4;
}

.pw-guide-ticket__desc {
  font-size: 0.9rem;
  color: var(--pw-text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
  flex-grow: 1;
}

.pw-guide-ticket__meta {
  font-size: 0.82rem;
  color: var(--pw-text-light);
  border-top: 1px dashed var(--pw-border-dashed);
  padding-top: 12px;
  margin-bottom: 14px;
}

/* ==========================================================================
   无障碍辅助与媒体查询
   ========================================================================== */
:focus-visible {
  outline: 2px solid var(--pw-primary);
  outline-offset: 2px;
}

@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;
  }
}

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

@media (min-width: 768px) {
  .pw-hero__title {
    font-size: 2.5rem;
  }

  .pw-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .pw-nav {
    display: block;
  }

  .pw-menu-toggle {
    display: none;
  }

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

  .pw-footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }

  .pw-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .pw-article-card {
    padding: 44px 36px;
  }
}

@media (min-width: 1024px) {
  .pw-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 767px) {
  .pw-mobile-bottom-bar.is-visible {
    display: block;
  }
  
  body {
    padding-bottom: 68px;
  }
}