/* ====================================================================
   扬帆云 (yfyun.help) - 全局动漫幻想风格样式表 (Anime Nautical Fantasy)
   Design Language: Anime Nautical / Celestial Astrolabe / ACG Adventure
   Cursor: 专属内联 SVG 二次元星芒导航光标
   Performance: 纯系统字体栈，零外部 CDN 请求，轻量极速
   ==================================================================== */

:root {
  /* 动漫晴空与海航幻想调色盘 */
  --color-bg: #f4f9ff;
  --color-surface: #ffffff;
  --color-surface-subtle: #edf5ff;
  --color-surface-muted: #e0e7ff;
  
  --color-text-main: #0b1e36;
  --color-text-body: #2c3e55;
  --color-text-muted: #627d98;
  --color-text-light: #9fb3c8;
  
  /* 动漫主色调：活力蔚蓝 + 荧光天蓝 + 航海琥珀星芒 + 幻想紫 */
  --color-primary: #0284c7;
  --color-primary-hover: #0369a1;
  --color-primary-glow: rgba(14, 165, 233, 0.4);
  --color-primary-subtle: #e0f2fe;
  --color-cyan-glow: #38bdf8;
  
  --color-navy: #0b1e36;
  --color-navy-card: #0f2747;
  --color-accent-gold: #f59e0b;
  --color-accent-gold-glow: rgba(245, 158, 11, 0.35);
  --color-accent-purple: #8b5cf6;
  --color-emerald: #10b981;
  
  --color-border: #dbeafe;
  --color-border-card: #e2e8f0;
  --color-border-hover: #38bdf8;
  
  --font-system: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
  
  --shadow-anime: 0 4px 14px rgba(2, 132, 199, 0.08), 0 1px 3px rgba(11, 30, 54, 0.05);
  --shadow-anime-hover: 0 14px 28px -4px rgba(2, 132, 199, 0.2), 0 0 18px rgba(56, 189, 248, 0.25);
  --shadow-glow-gold: 0 0 16px rgba(245, 158, 11, 0.3);
  
  --max-width: 1160px;
  --max-width-narrow: 840px;

  /* 动漫光标：二次元星芒导航指针 */
  --cursor-default: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28' viewBox='0 0 28 28'%3E%3Cpolygon points='3,3 23,10 14,14 10,23' fill='%230284c7' stroke='%23ffffff' stroke-width='2'/%3E%3Cpolygon points='19,19 22,17 25,19 22,21' fill='%23f59e0b'/%3E%3Cpolygon points='22,16 23,19 22,22 21,19' fill='%23fbbf24'/%3E%3Ccircle cx='12' cy='12' r='1.5' fill='%23ffffff'/%3E%3C/svg%3E") 0 0, auto;
  
  /* 动漫手势光标：四角星芒魔法晶体 */
  --cursor-pointer: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28' viewBox='0 0 28 28'%3E%3Cpath d='M14 2 L16 10 L24 12 L16 14 L14 22 L12 14 L4 12 L12 10 Z' fill='%230ea5e9' stroke='%23ffffff' stroke-width='1.8'/%3E%3Ccircle cx='14' cy='12' r='2.5' fill='%23fef08a'/%3E%3Ccircle cx='23' cy='21' r='1.5' fill='%2338bdf8'/%3E%3Ccircle cx='5' cy='22' r='1' fill='%23f59e0b'/%3E%3C/svg%3E") 14 12, pointer;
}

*, *::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-system);
  color: var(--color-text-body);
  background-color: var(--color-bg);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(56, 189, 248, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 85% 20%, rgba(245, 158, 11, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 50% 75%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
    linear-gradient(180deg, #f0f7ff 0%, #fbfdfe 100%);
  background-attachment: fixed;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  cursor: var(--cursor-default);
}

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

a, button, [role="button"] {
  cursor: var(--cursor-pointer);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.18s ease;
}

a:hover {
  color: #0ea5e9;
  text-shadow: 0 0 8px rgba(14, 165, 233, 0.35);
}

:focus-visible {
  outline: 2px solid var(--color-cyan-glow);
  outline-offset: 3px;
}

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

.container-narrow {
  width: 100%;
  max-width: var(--max-width-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 顶部导航 Header (动漫半透明星轨悬浮栏) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--color-border);
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.05);
  transition: all 0.2s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: -0.01em;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%);
  border: 2px solid #bae6fd;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 3px 8px rgba(2, 132, 199, 0.35);
  transition: transform 0.2s ease;
}

.brand-logo:hover .logo-icon {
  transform: rotate(-10deg) scale(1.08);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--color-text-body);
  position: relative;
  padding: 6px 2px;
  transition: color 0.18s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, #38bdf8, #f59e0b);
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
  transform: translateX(-50%);
}

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

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-toggle {
  display: none;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  cursor: var(--cursor-pointer);
  color: var(--color-navy);
  font-size: 1.25rem;
  line-height: 1;
  transition: all 0.18s ease;
}

.mobile-toggle:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-subtle);
}

/* 动漫活力交互按钮 (Anime Pill Buttons with Glow) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 700;
  padding: 11px 24px;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  cursor: var(--cursor-pointer);
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
  white-space: nowrap;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%);
  color: #ffffff;
  border-color: #bae6fd;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  text-shadow: 0 1px 2px rgba(11, 30, 54, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1 0%, #0284c7 100%);
  color: #ffffff;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.btn-primary:active {
  transform: translateY(1px) scale(0.98);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--color-navy);
  border-color: #cbd5e1;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
}

.btn-secondary:hover {
  background-color: var(--color-surface-subtle);
  color: var(--color-primary);
  border-color: #38bdf8;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 6px 18px rgba(56, 189, 248, 0.2);
}

.btn-secondary:active {
  transform: translateY(1px) scale(0.98);
}

.btn-large {
  padding: 14px 32px;
  font-size: 1.08rem;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* 动漫徽章与星芒标签 */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: linear-gradient(135deg, #e0f2fe 0%, #f0fdf4 100%);
  color: #0369a1;
  font-size: 0.85rem;
  font-weight: 700;
  border: 1.5px solid #7dd3fc;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.1);
  letter-spacing: 0.02em;
}

/* Hero 模块 */
.hero-section {
  padding: 76px 0 68px;
  background: radial-gradient(circle at 60% 30%, rgba(224, 242, 254, 0.6) 0%, transparent 65%), linear-gradient(180deg, #ffffff 0%, var(--color-bg) 100%);
  border-bottom: 2px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  max-width: 620px;
}

.hero-title {
  font-size: 2.9rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-navy);
  margin-top: 18px;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.8);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-body);
  line-height: 1.75;
  margin-bottom: 30px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.hero-indicators {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-top: 26px;
  border-top: 2px dashed #cbd5e1;
}

.indicator-item {
  display: flex;
  flex-direction: column;
}

.indicator-value {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-navy);
  display: flex;
  align-items: center;
  gap: 4px;
}

.indicator-value::before {
  content: "✦";
  color: var(--color-accent-gold);
  font-size: 0.85rem;
}

.indicator-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

/* 动漫 Hero 魔法罗盘视效容器 */
.hero-graphic {
  background: linear-gradient(145deg, #091a33 0%, #102d54 100%);
  border: 2px solid #38bdf8;
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: 0 16px 36px -6px rgba(2, 132, 199, 0.3), 0 0 25px rgba(56, 189, 248, 0.2);
  position: relative;
}

/* 模块通用标题 */
.section {
  padding: 76px 0;
  position: relative;
}

.section-alt {
  background-color: #ffffff;
  border-top: 2px solid var(--color-border);
  border-bottom: 2px solid var(--color-border);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 52px;
}

.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 800;
  color: #0284c7;
  padding: 4px 14px;
  background: var(--color-primary-subtle);
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* 网格系统 */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

/* 使用场景卡片 (4张 - 漫画分镜风格) */
.scenario-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-anime);
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
}

.scenario-card:hover {
  transform: translateY(-5px) scale(1.01);
  border-color: var(--color-cyan-glow);
  box-shadow: var(--shadow-anime-hover);
}

.scenario-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.scenario-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #e0f2fe 0%, #dbeafe 100%);
  border: 1.5px solid #bae6fd;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.15);
}

.scenario-device {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
  background: #f1f5f9;
  color: var(--color-text-muted);
  border-radius: var(--radius-pill);
  border: 1.5px solid #e2e8f0;
}

.scenario-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.scenario-desc {
  font-size: 0.94rem;
  color: var(--color-text-body);
  line-height: 1.65;
}

/* 核心优势卡片 */
.benefit-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-anime);
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.benefit-card:hover {
  transform: translateY(-5px);
  border-color: #38bdf8;
  box-shadow: var(--shadow-anime-hover);
}

.benefit-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
  border: 2px solid #7dd3fc;
  color: var(--color-primary-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.18);
}

.benefit-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.benefit-text {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* 流媒体与 AI 支持模块 */
.unlock-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.unlock-box {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-anime);
  transition: all 0.22s ease;
}

.unlock-box:hover {
  border-color: #38bdf8;
  box-shadow: var(--shadow-anime-hover);
}

.unlock-box-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 14px;
}

.unlock-box-desc {
  font-size: 0.96rem;
  color: var(--color-text-muted);
  margin-bottom: 22px;
  line-height: 1.65;
}

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

.unlock-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: #f8fafc;
  border: 1.5px solid #cbd5e1;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-main);
  transition: all 0.15s ease;
}

.unlock-tag:hover {
  background: var(--color-primary-subtle);
  border-color: #38bdf8;
  color: var(--color-primary);
  transform: scale(1.04);
}

/* 功能特性卡片 (4张) */
.feature-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-anime);
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: #38bdf8;
  box-shadow: var(--shadow-anime-hover);
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 10px;
}

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

/* 定价卡片模块 (3档 - 推荐档高亮) */
.pricing-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  align-items: stretch;
}

.pricing-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-anime);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-anime-hover);
}

.pricing-card.featured {
  border: 2.5px solid #0284c7;
  box-shadow: 0 16px 36px -4px rgba(2, 132, 199, 0.25), 0 0 16px rgba(56, 189, 248, 0.3);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.04) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.04em;
  border: 2px solid #ffffff;
  box-shadow: 0 3px 10px rgba(2, 132, 199, 0.35);
}

.pricing-tier {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.pricing-target {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 22px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 2px dashed var(--color-border);
}

.price-currency {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-right: 4px;
}

.price-amount {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--color-navy);
  line-height: 1;
}

.price-period {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-left: 6px;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 34px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--color-text-body);
}

.pricing-feature-icon {
  flex-shrink: 0;
  color: var(--color-emerald);
  font-weight: 800;
  margin-top: 1px;
}

/* FAQ 常见问答模块 (抽6条) */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-anime);
  transition: all 0.2s ease;
}

.faq-item:hover {
  border-color: #38bdf8;
}

.faq-question {
  width: 100%;
  padding: 20px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  text-align: left;
  font-family: inherit;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--color-navy);
  cursor: var(--cursor-pointer);
}

.faq-toggle-icon {
  flex-shrink: 0;
  color: var(--color-primary);
  transition: transform 0.25s ease;
}

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

.faq-answer {
  display: none;
  padding: 0 26px 22px;
  font-size: 0.98rem;
  color: var(--color-text-body);
  line-height: 1.75;
}

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

/* Final CTA 区块 (动漫深海星轨背景) */
.final-cta-section {
  padding: 86px 0;
  background: radial-gradient(circle at 50% 20%, #163866 0%, #08162b 100%);
  color: #ffffff;
  text-align: center;
  border-top: 3px solid #38bdf8;
  position: relative;
}

.final-cta-box {
  max-width: 700px;
  margin: 0 auto;
}

.final-cta-title {
  font-size: 2.35rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

.final-cta-subtitle {
  font-size: 1.15rem;
  color: #cbd5e1;
  margin-bottom: 34px;
  line-height: 1.7;
}

.final-cta-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.final-cta-notice {
  margin-top: 24px;
  font-size: 0.88rem;
  color: #94a3b8;
}

/* 页脚 Footer (仅导航与版权，含联盟披露，无文章列表) */
.site-footer {
  background: #061120;
  color: #94a3b8;
  padding: 64px 0 32px;
  border-top: 1px solid #132b4b;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand h4 {
  font-size: 1.2rem;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-brand p {
  line-height: 1.65;
  margin-bottom: 16px;
  max-width: 340px;
}

.footer-col h5 {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: #94a3b8;
}

.footer-links a:hover {
  color: #38bdf8;
}

.footer-bottom {
  padding-top: 26px;
  border-top: 1px solid #132b4b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.88rem;
}

/* 移动端吸底 CTA 条 (滚过首屏出现，接近 Footer 隐藏) */
.sticky-mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 2px solid #bae6fd;
  padding: 12px 18px;
  box-shadow: 0 -4px 16px rgba(15, 23, 42, 0.12);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  transform: translateY(100%);
}

.sticky-mobile-cta.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.sticky-mobile-cta .btn {
  width: 100%;
}

/* 文章正文排版（Prose） */
.page-header {
  background: #ffffff;
  border-bottom: 2px solid var(--color-border);
  padding: 44px 0;
  margin-bottom: 44px;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.04);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

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

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

.page-title {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1.35;
  margin-bottom: 14px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.prose {
  font-size: 1.06rem;
  line-height: 1.85;
  color: var(--color-text-body);
}

.prose h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-top: 42px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
}

.prose h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-top: 30px;
  margin-bottom: 14px;
}

.prose p {
  margin-bottom: 22px;
}

.prose ul, .prose ol {
  margin-bottom: 26px;
  padding-left: 26px;
}

.prose li {
  margin-bottom: 10px;
}

.prose strong {
  color: var(--color-navy);
  font-weight: 700;
}

.prose blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 16px 22px;
  background: var(--color-surface-subtle);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 26px;
  color: var(--color-text-body);
  font-style: normal;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  font-size: 0.96rem;
}

.prose th, .prose td {
  border: 1.5px solid var(--color-border);
  padding: 14px 18px;
  text-align: left;
}

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

.prose tr:nth-child(even) td {
  background: #fbfdfe;
}

.article-cta-box {
  margin-top: 52px;
  padding: 36px;
  background: linear-gradient(135deg, #f0f9ff 0%, #edf5ff 100%);
  border: 2px solid #bae6fd;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.08);
}

.article-cta-box h3 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.article-cta-box p {
  color: var(--color-text-body);
  max-width: 600px;
  margin: 0 auto 22px;
}

.related-articles {
  margin-top: 52px;
  padding-top: 34px;
  border-top: 2px dashed var(--color-border);
}

.related-articles h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 20px;
}

.related-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.related-links li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.related-links a {
  font-weight: 600;
}

/* 指南卡片网格 */
.guide-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-anime);
  display: flex;
  flex-direction: column;
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.guide-card:hover {
  transform: translateY(-5px) scale(1.01);
  border-color: #38bdf8;
  box-shadow: var(--shadow-anime-hover);
}

.guide-card-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  border: 1px solid #bae6fd;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
  align-self: flex-start;
}

.guide-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 12px;
  line-height: 1.45;
}

.guide-card h3 a {
  color: var(--color-navy);
}

.guide-card h3 a:hover {
  color: var(--color-primary);
}

.guide-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.guide-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-light);
  padding-top: 16px;
  border-top: 1.5px dashed var(--color-border);
}

/* 法律合规卡片 */
.legal-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 44px;
  box-shadow: var(--shadow-anime);
  margin-bottom: 60px;
}

/* 点击星芒粒子微动效 (Pure CSS/JS) */
.anime-sparkle {
  position: fixed;
  pointer-events: none;
  z-index: 99999;
  width: 16px;
  height: 16px;
  transform: translate(-50%, -50%);
  animation: sparkleAnim 0.45s ease-out forwards;
}

@keyframes sparkleAnim {
  0% {
    transform: translate(-50%, -50%) scale(0) rotate(0deg);
    opacity: 1;
  }
  50% {
    opacity: 0.9;
  }
  100% {
    transform: translate(var(--tx), var(--ty)) scale(1.3) rotate(180deg);
    opacity: 0;
  }
}

/* 响应式断点 */
@media (max-width: 992px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-wrapper {
    grid-template-columns: 1fr;
    max-width: 440px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .unlock-showcase {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(14px);
    border-bottom: 2px solid var(--color-border);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    box-shadow: 0 10px 25px rgba(2, 132, 199, 0.1);
  }
  .nav-menu.active {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .header-cta {
    display: none;
  }
  .sticky-mobile-cta {
    display: block;
  }
  body {
    padding-bottom: 68px;
  }
  .hero-indicators {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .legal-card {
    padding: 26px 20px;
  }
}