/* ==========================================================================
   狗狗加速 DoggyGo - Manga Scroll 漫画卷轴设计系统
   严格遵循色彩系统、点阵印刷纹理、漫画分镜、粗黑边框与速度线
   ========================================================================== */

:root {
  --bg-main: #FAFAF7;
  --bg-card: #FFFFFF;
  --text-main: #111111;
  --text-muted: #555555;
  --manga-dark: #232323;
  --manga-border: #161616;
  --accent-red: #FF365E;
  --accent-yellow: #FFD43B;
  --tech-blue: #3478F6;
  --soft-purple: #9B5CFF;
  
  --border-thick: 3.5px solid var(--manga-border);
  --border-medium: 2.5px solid var(--manga-border);
  --border-thin: 1.5px solid var(--manga-border);
  
  --shadow-comic: 5px 5px 0px var(--manga-border);
  --shadow-comic-lg: 8px 8px 0px var(--manga-border);
  --shadow-comic-hover: 2px 2px 0px var(--manga-border);

  --font-manga-head: 'Impact', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(var(--manga-border) 1px, transparent 1px),
    radial-gradient(var(--manga-border) 1px, var(--bg-main) 1px);
  background-size: 24px 24px;
  background-position: 0 0, 12px 12px;
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
}

/* 漫画点阵背景纹理辅助类 */
.manga-screentone-bg {
  background-image: radial-gradient(var(--manga-dark) 1.2px, transparent 1.2px);
  background-size: 10px 10px;
}

.manga-screentone-dense {
  background-image: radial-gradient(var(--manga-dark) 1.5px, transparent 1.5px);
  background-size: 6px 6px;
}

/* 链接基础样式 */
a {
  color: var(--tech-blue);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--accent-red);
}

/* 漫画拟声词与角标 SFX */
.manga-sfx {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--font-manga-head);
  font-weight: 900;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  border: var(--border-medium);
  box-shadow: 3px 3px 0 var(--manga-border);
  transform: rotate(-2deg);
  text-transform: uppercase;
  user-select: none;
}

.sfx-speed {
  background: var(--tech-blue);
  color: #FFFFFF;
}

.sfx-boom {
  background: var(--accent-yellow);
  color: var(--manga-border);
  transform: rotate(2deg);
}

.sfx-spark {
  background: var(--accent-red);
  color: #FFFFFF;
}

.sfx-bark {
  background: var(--soft-purple);
  color: #FFFFFF;
}

/* 漫画容器 */
.manga-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 漫画对话气泡 */
.manga-speech-bubble {
  position: relative;
  background: #FFFFFF;
  border: var(--border-thick);
  border-radius: 12px;
  padding: 14px 18px;
  box-shadow: var(--shadow-comic);
  color: var(--text-main);
  font-weight: 600;
}

.manga-speech-bubble::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 30px;
  width: 0;
  height: 0;
  border-left: 12px solid transparent;
  border-right: 12px solid transparent;
  border-top: 15px solid var(--manga-border);
}

.manga-speech-bubble::before {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 32px;
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 12px solid #FFFFFF;
  z-index: 2;
}

/* 漫画分镜框通用卡片 */
.manga-panel-card {
  background: var(--bg-card);
  border: var(--border-thick);
  box-shadow: var(--shadow-comic);
  border-radius: 8px;
  padding: 24px;
  position: relative;
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.25s ease;
}

.manga-panel-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-comic-lg);
}

/* 漫画标题通用样式 */
.manga-section-title-wrap {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
}

.manga-section-sub {
  font-family: var(--font-manga-head);
  font-size: 0.95rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}

.manga-section-title {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-main);
  position: relative;
  display: inline-block;
  padding-bottom: 12px;
}

.manga-section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 6px;
  background: var(--accent-yellow);
  border: 2px solid var(--manga-border);
  box-shadow: 2px 2px 0 var(--manga-border);
}

/* CTA 统一按钮系统 */
.manga-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1.05rem;
  padding: 14px 28px;
  border: var(--border-thick);
  border-radius: 8px;
  box-shadow: var(--shadow-comic);
  cursor: pointer;
  text-align: center;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  text-decoration: none;
}

.manga-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-comic-lg);
}

.manga-btn:active {
  transform: translate(2px, 2px);
  box-shadow: var(--shadow-comic-hover);
}

.btn-primary {
  background: var(--accent-red);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: #ff1c48;
  color: #FFFFFF;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: #F0F0EB;
  color: var(--text-main);
}

.btn-yellow {
  background: var(--accent-yellow);
  color: var(--manga-border);
}

.btn-yellow:hover {
  background: #ffcd1b;
}

/* 按钮外部跳转提示小标签 */
.btn-external-note {
  display: block;
  font-size: 0.72rem;
  font-weight: normal;
  opacity: 0.85;
  margin-top: 2px;
}

/* ==========================================================================
   00 开场动画 (Five Acts Manga Intro)
   ========================================================================== */
#mangaOpeningOverlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-main);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform 0.6s cubic-bezier(0.77, 0, 0.175, 1), opacity 0.4s ease;
}

#mangaOpeningOverlay.manga-peeling-up {
  transform: translateY(-100%);
  pointer-events: none;
}

/* 跳过按钮 */
.manga-skip-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  background: #FFFFFF;
  border: var(--border-medium);
  box-shadow: var(--shadow-comic);
  padding: 8px 18px;
  font-weight: 800;
  font-size: 0.85rem;
  cursor: pointer;
  z-index: 10000;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.manga-skip-btn:hover {
  background: var(--accent-yellow);
  transform: translate(-2px, -2px);
}

.opening-stage {
  position: relative;
  width: 90%;
  max-width: 650px;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* 第一幕：狗爪印与震动波 */
.act-paw {
  width: 90px;
  height: 90px;
  margin-bottom: 20px;
  animation: pawShockwave 1s ease-out forwards;
}

@keyframes pawShockwave {
  0% { transform: scale(0.2); opacity: 0; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* 第二幕：速度线与奔跑狗狗 */
.act-speedlines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 40px,
    rgba(22, 22, 22, 0.08) 40px,
    rgba(22, 22, 22, 0.08) 42px
  );
  opacity: 0;
  animation: speedlinesIn 0.5s 0.6s forwards;
}

@keyframes speedlinesIn {
  from { opacity: 0; transform: scaleX(0.8); }
  to { opacity: 1; transform: scaleX(1); }
}

/* 第三幕：对话框 */
.act-dialogue {
  background: #FFFFFF;
  border: var(--border-thick);
  box-shadow: var(--shadow-comic);
  padding: 12px 24px;
  border-radius: 20px;
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--accent-red);
  margin-top: 15px;
  opacity: 0;
  animation: bubblePop 0.4s 1.2s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes bubblePop {
  0% { transform: scale(0.4); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* 第四幕：真实 HTML 品牌大字与地球插画 */
.act-brand-wrap {
  margin-top: 20px;
  opacity: 0;
  animation: brandReveal 0.6s 1.6s forwards;
  position: relative;
}

.opening-brand-cn {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--manga-border);
  letter-spacing: 2px;
  text-shadow: 3px 3px 0 var(--accent-yellow);
}

.opening-brand-en {
  font-family: var(--font-manga-head);
  font-size: 1.5rem;
  color: var(--tech-blue);
  letter-spacing: 4px;
}

@keyframes brandReveal {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 尊重减少动画的系统偏好 */
@media (prefers-reduced-motion: reduce) {
  #mangaOpeningOverlay {
    display: none !important;
  }
}

/* ==========================================================================
   01 Header 导航栏
   ========================================================================== */
.manga-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(250, 250, 247, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: var(--border-thick);
  z-index: 1000;
  transition: all 0.3s ease;
}

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

.brand-logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-svg {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: var(--border-medium);
  background: #FFFFFF;
}

.brand-title-group {
  display: flex;
  flex-direction: column;
}

.brand-name-cn {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--manga-border);
  line-height: 1.1;
}

.brand-name-en {
  font-family: var(--font-manga-head);
  font-size: 0.8rem;
  color: var(--tech-blue);
  letter-spacing: 1.5px;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-item {
  font-weight: 700;
  color: var(--text-main);
  padding: 6px 10px;
  border-radius: 4px;
  transition: all 0.2s ease;
  position: relative;
}

.nav-item:hover {
  color: var(--accent-red);
  background: rgba(255, 212, 59, 0.25);
}

.header-cta-btn {
  padding: 8px 18px;
  font-size: 0.9rem;
  background: var(--accent-red);
  color: #FFFFFF !important;
  border: var(--border-medium);
  box-shadow: 3px 3px 0 var(--manga-border);
  border-radius: 6px;
}

.header-cta-btn:hover {
  background: #ff1c48;
  transform: translate(-1px, -1px);
}

/* 汉堡菜单按钮 (移动端) */
.mobile-menu-toggle {
  display: none;
  background: #FFFFFF;
  border: var(--border-medium);
  box-shadow: 2px 2px 0 var(--manga-border);
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 900;
  font-size: 1.2rem;
}

/* 移动端菜单抽屉 */
.mobile-nav-drawer {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  width: 100%;
  background: #FFFFFF;
  border-bottom: var(--border-thick);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  padding: 20px;
  flex-direction: column;
  gap: 16px;
}

.mobile-nav-drawer.open {
  display: flex;
}

/* ==========================================================================
   02 Hero 首页首屏
   ========================================================================== */
.hero-section {
  padding: 60px 0 80px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  position: relative;
}

.hero-badge-row {
  margin-bottom: 16px;
  display: flex;
  gap: 10px;
  align-items: center;
}

.hero-h1 {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.15;
  color: var(--manga-border);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.hero-headline {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-red);
  margin-bottom: 12px;
  display: block;
}

.hero-subtitle {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--manga-dark);
  margin-bottom: 20px;
  padding-left: 12px;
  border-left: 4px solid var(--accent-yellow);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

/* 官方授权与外部跳转提示条 */
.auth-redirect-notice-banner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  border: var(--border-thin);
  border-radius: 6px;
  padding: 6px 12px;
  margin-top: 18px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.auth-redirect-notice-banner .icon {
  color: var(--tech-blue);
  font-weight: bold;
}

/* Hero 右侧五格连续滚动漫画分镜 */
.manga-hero-scroll-strip {
  background: var(--bg-card);
  border: var(--border-thick);
  box-shadow: var(--shadow-comic-lg);
  border-radius: 10px;
  padding: 20px;
  position: relative;
  max-height: 540px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--manga-border) var(--bg-main);
}

.manga-panel-badge {
  text-align: center;
  margin-bottom: 14px;
}

.manga-frame {
  background: #FAFAF7;
  border: var(--border-medium);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 18px;
  transition: all 0.3s ease;
  position: relative;
}

.manga-frame:last-child {
  margin-bottom: 0;
}

.manga-frame.active {
  border-color: var(--accent-red);
  background: #FFFFFF;
  box-shadow: var(--shadow-comic);
}

.frame-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.frame-tag {
  font-family: var(--font-manga-head);
  font-size: 0.75rem;
  font-weight: 900;
  background: var(--manga-dark);
  color: #FFFFFF;
  padding: 2px 8px;
  border-radius: 3px;
}

.frame-caption {
  font-size: 0.82rem;
  font-weight: bold;
  color: var(--text-muted);
}

.frame-art {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px 0;
}

.panel-art-svg {
  width: 100%;
  max-height: 140px;
}

.frame-bubble {
  background: #FFFFFF;
  border: var(--border-thin);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  box-shadow: 2px 2px 0 var(--manga-border);
  margin-top: 6px;
}

/* ==========================================================================
   03 服务优势 (Features)
   ========================================================================== */
.features-section {
  padding: 80px 0;
  background: #FFFFFF;
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.feature-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.feature-art-wrap {
  background: #FAFAF7;
  border: var(--border-medium);
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 18px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.feature-card-svg {
  width: 100%;
  max-height: 120px;
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--manga-border);
}

.feature-subtitle {
  font-size: 0.9rem;
  font-weight: bold;
  color: var(--tech-blue);
  margin-bottom: 12px;
}

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

/* ==========================================================================
   04 全球网络展示 (Global Network)
   ========================================================================== */
.network-section {
  padding: 80px 0;
}

.network-dashboard {
  background: var(--bg-card);
  border: var(--border-thick);
  box-shadow: var(--shadow-comic-lg);
  border-radius: 10px;
  padding: 32px;
  position: relative;
}

.network-stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: var(--border-medium);
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-family: var(--font-manga-head);
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--accent-red);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--manga-dark);
}

.regions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.region-chip {
  background: #FAFAF7;
  border: var(--border-medium);
  box-shadow: 3px 3px 0 var(--manga-border);
  border-radius: 6px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.region-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.region-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--manga-border);
}

.region-tag {
  font-size: 0.72rem;
  font-weight: bold;
  padding: 2px 6px;
  background: var(--accent-yellow);
  border: 1.5px solid var(--manga-border);
  border-radius: 3px;
}

.region-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.region-footer {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: bold;
  border-top: 1px dashed var(--manga-border);
  padding-top: 8px;
}

.latency-val {
  color: var(--tech-blue);
  font-family: var(--font-mono);
}

/* ==========================================================================
   05 套餐价格 (Pricing)
   ========================================================================== */
.pricing-section {
  padding: 80px 0;
  background: #FFFFFF;
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.pricing-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: var(--border-thick);
  box-shadow: var(--shadow-comic);
  border-radius: 10px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

/* 年付最受欢迎爆炸卡片 */
.pricing-card.popular {
  border-color: var(--manga-border);
  background: #FFFDF5;
  transform: scale(1.03);
  box-shadow: var(--shadow-comic-lg);
  z-index: 2;
}

.manga-explosion-badge {
  position: absolute;
  top: -18px;
  right: -10px;
  background: var(--accent-yellow);
  color: var(--manga-border);
  border: var(--border-medium);
  box-shadow: 3px 3px 0 var(--manga-border);
  padding: 6px 14px;
  font-family: var(--font-manga-head);
  font-size: 0.82rem;
  font-weight: 900;
  transform: rotate(6deg);
}

.plan-header {
  margin-bottom: 24px;
  border-bottom: var(--border-thin);
  padding-bottom: 16px;
}

.plan-name {
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--manga-border);
}

.plan-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.plan-price-wrap {
  margin: 16px 0;
}

.plan-price-val {
  font-family: var(--font-manga-head);
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--manga-border);
  line-height: 1;
}

.plan-currency {
  font-size: 1.8rem;
  vertical-align: top;
  margin-right: 2px;
}

.plan-unit {
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--text-muted);
}

.plan-equivalent {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--accent-red);
  background: #FFF0F2;
  padding: 3px 8px;
  border-radius: 4px;
  margin-top: 6px;
}

.plan-features-list {
  list-style: none;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan-feature-item {
  font-size: 0.92rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--text-main);
}

.feature-check {
  font-weight: 900;
  color: var(--tech-blue);
  flex-shrink: 0;
}

.plan-feature-item.highlight {
  font-weight: 800;
  color: var(--manga-border);
}

.pricing-clarification-note {
  margin-top: 36px;
  padding: 18px 24px;
  background: #FAFAF7;
  border: var(--border-medium);
  box-shadow: 4px 4px 0 var(--manga-border);
  border-radius: 8px;
  text-align: center;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--manga-dark);
}

/* GEO/SEO 语义化 HTML 价格对比表 */
.pricing-seo-table-wrap {
  margin-top: 40px;
  overflow-x: auto;
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  background: #FFFFFF;
  border: var(--border-thick);
  box-shadow: var(--shadow-comic);
  border-radius: 8px;
  text-align: center;
}

.pricing-table th, .pricing-table td {
  padding: 14px 16px;
  border: 1px solid #161616;
  font-size: 0.9rem;
}

.pricing-table th {
  background: #232323;
  color: #FFFFFF;
  font-weight: 800;
}

.pricing-table tr:nth-child(even) {
  background: #FAFAF7;
}

/* ==========================================================================
   06 使用场景 (Scenarios)
   ========================================================================== */
.scenarios-section {
  padding: 80px 0;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.scenario-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.scenario-art-box {
  background: #FAFAF7;
  border: var(--border-medium);
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
}

.scenario-tag {
  align-self: flex-start;
  margin-bottom: 10px;
}

.scenario-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--manga-border);
}

.scenario-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   07 客户端下载与使用指引 (Guide)
   ========================================================================== */
.guide-section {
  padding: 80px 0;
  background: #FFFFFF;
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.devices-supported-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
}

.device-chip {
  background: #FAFAF7;
  border: var(--border-medium);
  box-shadow: 3px 3px 0 var(--manga-border);
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--manga-border);
}

.steps-manga-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.step-comic-card {
  background: #FAFAF7;
  border: var(--border-medium);
  box-shadow: var(--shadow-comic);
  border-radius: 8px;
  padding: 20px;
  position: relative;
}

.step-num-badge {
  font-family: var(--font-manga-head);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--accent-red);
  line-height: 1;
  margin-bottom: 12px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--manga-border);
}

.step-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ==========================================================================
   08 原创文章中心 (Articles)
   ========================================================================== */
.articles-section {
  padding: 80px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.article-card {
  background: var(--bg-card);
  border: var(--border-thick);
  box-shadow: var(--shadow-comic);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.article-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-comic-lg);
}

.article-card-cover {
  height: 160px;
  background: #FAFAF7;
  border-bottom: var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.article-card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  justify-content: space-between;
}

.article-date-row {
  font-size: 0.78rem;
  font-weight: bold;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.article-card-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--manga-border);
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-card-title a {
  color: inherit;
}

.article-card-title a:hover {
  color: var(--accent-red);
}

.article-card-summary {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.article-read-btn {
  font-weight: 800;
  font-size: 0.88rem;
  color: var(--tech-blue);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-read-btn:hover {
  color: var(--accent-red);
  transform: translateX(4px);
}

/* ==========================================================================
   09 常见问题 FAQ (Speech Bubble Accordion)
   ========================================================================== */
.faq-section {
  padding: 80px 0;
  background: #FFFFFF;
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.faq-item {
  background: #FAFAF7;
  border: var(--border-medium);
  box-shadow: var(--shadow-comic);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-question-btn {
  width: 100%;
  padding: 18px 22px;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--manga-border);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-icon {
  font-family: var(--font-manga-head);
  font-size: 1.3rem;
  transition: transform 0.25s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--accent-red);
}

.faq-answer-pane {
  display: none;
  padding: 0 22px 20px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px dashed var(--manga-border);
}

.faq-item.active .faq-answer-pane {
  display: block;
}

/* ==========================================================================
   10 Footer 页脚
   ========================================================================== */
.manga-footer {
  background: #161616;
  color: #FFFFFF;
  padding: 60px 0 30px;
  border-top: 5px solid var(--accent-yellow);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand-title {
  font-size: 1.4rem;
  font-weight: 900;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.footer-brand-desc {
  font-size: 0.88rem;
  color: #AAAAAA;
  line-height: 1.65;
  max-width: 320px;
  margin-bottom: 20px;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent-yellow);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: #CCCCCC;
  font-size: 0.88rem;
}

.footer-link:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.footer-bottom-row {
  border-top: 1px solid #333333;
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: #888888;
}

/* ==========================================================================
   文章详情页样式 (Semantic Article Details)
   ========================================================================== */
.article-page-wrap {
  padding: 40px 0 80px;
}

.article-breadcrumbs {
  margin-bottom: 24px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.article-breadcrumbs a {
  color: var(--manga-dark);
}

.article-breadcrumbs a:hover {
  color: var(--accent-red);
}

.article-main-card {
  background: #FFFFFF;
  border: var(--border-thick);
  box-shadow: var(--shadow-comic-lg);
  border-radius: 12px;
  padding: 48px;
  margin-bottom: 40px;
}

.article-h1 {
  font-size: 2.3rem;
  font-weight: 900;
  color: var(--manga-border);
  line-height: 1.35;
  margin-bottom: 16px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  padding-bottom: 20px;
  margin-bottom: 28px;
  border-bottom: var(--border-medium);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* GEO 直接回答摘要框 */
.geo-direct-answer-box {
  background: #FFFDF0;
  border: var(--border-medium);
  border-left: 8px solid var(--accent-yellow);
  box-shadow: 3px 3px 0 var(--manga-border);
  border-radius: 6px;
  padding: 20px 24px;
  margin-bottom: 36px;
}

.geo-answer-header {
  font-family: var(--font-manga-head);
  font-size: 0.95rem;
  font-weight: 900;
  color: var(--manga-border);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.geo-answer-text {
  font-size: 1rem;
  font-weight: 700;
  color: var(--manga-dark);
  line-height: 1.6;
}

.article-prose {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-main);
}

.article-prose h2 {
  font-size: 1.55rem;
  font-weight: 900;
  color: var(--manga-border);
  margin-top: 40px;
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 5px solid var(--accent-red);
}

.article-prose h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--manga-dark);
  margin-top: 24px;
  margin-bottom: 12px;
}

.article-prose p {
  margin-bottom: 20px;
}

.article-prose ul, .article-prose ol {
  margin-left: 24px;
  margin-bottom: 20px;
}

.article-prose li {
  margin-bottom: 8px;
}

.article-faq-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: var(--border-medium);
}

.article-related-box {
  margin-top: 48px;
  background: #FAFAF7;
  border: var(--border-medium);
  border-radius: 8px;
  padding: 24px;
}

/* 响应式断点 */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .pricing-cards-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .pricing-card.popular {
    transform: none;
  }

  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }

  .hero-h1 {
    font-size: 2.2rem;
  }

  .hero-headline {
    font-size: 1.35rem;
  }

  .article-main-card {
    padding: 24px 18px;
  }

  .article-h1 {
    font-size: 1.7rem;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
  }
}