/* ==========================================================================
   BIU BIU 加速器 - 新潮漫画风格 (POP COMIC / NEO-BRUTALISM) 原生样式表
   极简无依赖 · 秒开级加载 · 纯原生 CSS
   ========================================================================== */

:root {
  --bg-main: #FFFDF5;
  --bg-pattern: #FFEFA6;
  --ink-black: #121212;
  --comic-yellow: #FFE500;
  --comic-cyan: #00F0FF;
  --comic-pink: #FF2A6D;
  --comic-green: #05FFA1;
  --comic-purple: #8B5CF6;
  --comic-orange: #FF6B00;
  --card-white: #FFFFFF;
  --border-width: 3px;
  --border-thick: 4px;
  --shadow-sm: 3px 3px 0px var(--ink-black);
  --shadow-md: 5px 5px 0px var(--ink-black);
  --shadow-lg: 8px 8px 0px var(--ink-black);
  --shadow-xl: 12px 12px 0px var(--ink-black);
  --font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
}

/* 全局重置与基础样式 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--ink-black);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
  /* 经典漫画网点微纹理 */
  background-image: radial-gradient(var(--ink-black) 8%, transparent 9%);
  background-size: 24px 24px;
  background-color: #FFFDF0;
}

/* 漫画风装饰容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   通用组件：漫画按钮、徽章与卡片
   ========================================================================== */

/* 漫画大按钮 */
.comic-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: var(--border-thick) solid var(--ink-black);
  color: var(--ink-black);
  background: var(--comic-yellow);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease;
  user-select: none;
  text-align: center;
  line-height: 1.2;
}

.comic-btn:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-lg);
  background: #FFF04D;
}

.comic-btn:active {
  transform: translate(3px, 3px);
  box-shadow: 1px 1px 0px var(--ink-black);
}

.comic-btn-pink {
  background: var(--comic-pink);
  color: #FFFFFF;
}
.comic-btn-pink:hover {
  background: #FF4782;
}

.comic-btn-cyan {
  background: var(--comic-cyan);
  color: var(--ink-black);
}
.comic-btn-cyan:hover {
  background: #3DF4FF;
}

.comic-btn-green {
  background: var(--comic-green);
  color: var(--ink-black);
}
.comic-btn-green:hover {
  background: #39FFB3;
}

.comic-btn-outline {
  background: #FFFFFF;
  color: var(--ink-black);
}
.comic-btn-outline:hover {
  background: #F3F4F6;
}

.comic-btn-lg {
  padding: 18px 38px;
  font-size: 1.35rem;
  border-radius: var(--radius-lg);
}

/* 立刻体验 Biu Biu 专线 - 醒目突出大字高亮样式 */
.comic-btn-experience {
  font-size: 1.35rem !important;
  font-weight: 900 !important;
  letter-spacing: 1px !important;
  color: #FFFFFF !important;
  text-shadow: 2px 2px 0px rgba(0, 0, 0, 0.75), -1px -1px 0px rgba(0, 0, 0, 0.25) !important;
  padding: 16px 36px !important;
  border: 3.5px solid var(--ink-black) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: 5px 5px 0px var(--ink-black) !important;
  background-color: var(--comic-pink) !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 10px !important;
}

.comic-btn-experience:hover {
  background-color: #FF2E73 !important;
  transform: translate(-3px, -3px) scale(1.02) !important;
  box-shadow: 7px 7px 0px var(--ink-black) !important;
}

.comic-btn-experience:active {
  transform: translate(2px, 2px) !important;
  box-shadow: 2px 2px 0px var(--ink-black) !important;
}

/* 漫画徽章 Tag */
.comic-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 900;
  padding: 4px 12px;
  border-radius: 999px;
  border: var(--border-width) solid var(--ink-black);
  box-shadow: var(--shadow-sm);
  background: var(--comic-yellow);
  color: var(--ink-black);
  text-transform: uppercase;
}

.comic-tag.rotate-left {
  transform: rotate(-3deg);
}

.comic-tag.rotate-right {
  transform: rotate(3deg);
}

.comic-tag.tag-pink {
  background: var(--comic-pink);
  color: #fff;
}
.comic-tag.tag-cyan {
  background: var(--comic-cyan);
  color: var(--ink-black);
}
.comic-tag.tag-green {
  background: var(--comic-green);
  color: var(--ink-black);
}

/* 漫画卡片 */
.comic-card {
  background: var(--card-white);
  border: var(--border-thick) solid var(--ink-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 30px;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

/* 漫画标题区域 */
.section-header {
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section-title {
  display: inline-block;
  font-size: 2.6rem;
  font-weight: 950;
  text-shadow: 2px 2px 0px #FFE500;
  letter-spacing: -0.5px;
  margin-top: 10px;
  margin-bottom: 12px;
  position: relative;
}

.section-subtitle {
  font-size: 1.15rem;
  font-weight: 600;
  color: #4B5563;
  max-width: 680px;
  margin: 0 auto;
}

/* ==========================================================================
   1. 顶部导航 (Navbar)
   ========================================================================== */
.comic-nav {
  position: sticky;
  top: 16px;
  z-index: 100;
  padding: 0 24px;
  margin-bottom: 30px;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  background: var(--card-white);
  border: var(--border-thick) solid var(--ink-black);
  border-radius: 999px;
  box-shadow: var(--shadow-md);
  padding: 12px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 950;
  color: var(--ink-black);
}

.logo-badge {
  background: var(--comic-pink);
  color: #FFFFFF;
  padding: 4px 10px;
  font-size: 1rem;
  border-radius: 8px;
  border: 2px solid var(--ink-black);
  box-shadow: 2px 2px 0 var(--ink-black);
  transform: rotate(-6deg);
  display: inline-block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  font-weight: 800;
  color: var(--ink-black);
  font-size: 0.98rem;
  padding: 6px 12px;
  border-radius: 8px;
  transition: all 0.15s ease;
}

.nav-links a:hover {
  background: var(--comic-yellow);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.nav-cta {
  padding: 10px 22px;
  font-size: 0.95rem;
  border-radius: 999px;
}

/* ==========================================================================
   2. 主视觉区 (Hero Section)
   ========================================================================== */
.hero-section {
  padding: 40px 0 70px;
}

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

.hero-content {
  position: relative;
}

.hero-headline {
  font-size: 3.6rem;
  font-weight: 950;
  line-height: 1.12;
  margin: 18px 0;
  letter-spacing: -1px;
}

.hero-headline .highlight-yellow {
  background: var(--comic-yellow);
  padding: 0 10px;
  border-radius: 8px;
  display: inline-block;
  border: 3px solid var(--ink-black);
  box-shadow: 4px 4px 0 var(--ink-black);
  transform: rotate(-1.5deg);
}

.hero-headline .highlight-pink {
  color: var(--comic-pink);
  text-decoration: underline wavy var(--comic-cyan);
  text-underline-offset: 6px;
}

.hero-desc {
  font-size: 1.25rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 36px;
}

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

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  font-size: 0.92rem;
  background: #FFF;
  border: 2px solid var(--ink-black);
  padding: 6px 14px;
  border-radius: 999px;
  box-shadow: 2px 2px 0 var(--ink-black);
}

/* Hero 右侧漫画控制台看板 */
.hero-visual-card {
  background: #FFFFFF;
  border: var(--border-thick) solid var(--ink-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 26px;
  position: relative;
  background-image: linear-gradient(#F3F4F6 1.5px, transparent 1.5px), linear-gradient(to right, #F3F4F6 1.5px, #FFFFFF 1.5px);
  background-size: 20px 20px;
}

.hero-badge-float {
  position: absolute;
  top: -18px;
  right: -16px;
  background: var(--comic-pink);
  color: #FFF;
  font-weight: 900;
  font-size: 1.1rem;
  padding: 8px 18px;
  border: 3px solid var(--ink-black);
  border-radius: 12px;
  box-shadow: 4px 4px 0 var(--ink-black);
  transform: rotate(6deg);
  animation: floatBounce 3s ease-in-out infinite alternate;
}

@keyframes floatBounce {
  0% { transform: rotate(6deg) translateY(0px); }
  100% { transform: rotate(8deg) translateY(-8px); }
}

.speed-meter-box {
  background: var(--comic-yellow);
  border: 3px solid var(--ink-black);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-md);
}

.meter-header {
  display: flex;
  justify-content: space-between;
  font-weight: 900;
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.meter-val-large {
  font-size: 3rem;
  font-weight: 950;
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.meter-unit {
  font-size: 1.2rem;
  font-weight: 800;
}

.meter-bar-track {
  width: 100%;
  height: 16px;
  background: #FFF;
  border: 2px solid var(--ink-black);
  border-radius: 999px;
  margin-top: 12px;
  overflow: hidden;
  position: relative;
}

.meter-bar-fill {
  width: 98.6%;
  height: 100%;
  background: repeating-linear-gradient(
    45deg,
    var(--comic-pink),
    var(--comic-pink) 10px,
    #FF548E 10px,
    #FF548E 20px
  );
}

.node-status-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.node-status-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #FFFFFF;
  border: 2px solid var(--ink-black);
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 800;
  font-size: 0.9rem;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #059669;
  background: #D1FAE5;
  padding: 3px 8px;
  border: 1.5px solid var(--ink-black);
  border-radius: 6px;
}

/* ==========================================================================
   3. 核心优势 (Core Advantages)
   ========================================================================== */
.features-section {
  padding: 70px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.feature-icon-wrapper {
  width: 64px;
  height: 64px;
  border: 3px solid var(--ink-black);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.icon-yellow { background: var(--comic-yellow); }
.icon-cyan   { background: var(--comic-cyan); }
.icon-pink   { background: var(--comic-pink); color: #FFF; }
.icon-green  { background: var(--comic-green); }
.icon-purple { background: var(--comic-purple); color: #FFF; }
.icon-orange { background: var(--comic-orange); color: #FFF; }

.feature-card h3 {
  font-size: 1.45rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.feature-card p {
  color: #4B5563;
  font-weight: 600;
  font-size: 0.98rem;
  line-height: 1.55;
  margin-bottom: 16px;
}

.feature-footer-tag {
  align-self: flex-start;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 10px;
  border: 2px solid var(--ink-black);
  border-radius: 6px;
  background: #F3F4F6;
}

/* ==========================================================================
   4. 流媒体与 AI 支持 (Streaming & AI)
   ========================================================================== */
.streaming-ai-section {
  padding: 70px 0;
  background: #F4F0FF;
  border-top: var(--border-thick) solid var(--ink-black);
  border-bottom: var(--border-thick) solid var(--ink-black);
  position: relative;
}

.streaming-ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.category-card {
  background: #FFFFFF;
  border: var(--border-thick) solid var(--ink-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px;
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 3px dashed var(--ink-black);
}

.category-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.6rem;
  font-weight: 950;
}

.badge-pill {
  font-size: 0.85rem;
  font-weight: 900;
  padding: 4px 12px;
  border: 2px solid var(--ink-black);
  border-radius: 999px;
  background: var(--comic-cyan);
}

.service-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.service-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #FFF;
  border: 2.5px solid var(--ink-black);
  padding: 8px 14px;
  border-radius: 12px;
  font-weight: 900;
  font-size: 0.95rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease;
}

.service-chip:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: var(--comic-yellow);
}

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

.category-bullets li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.96rem;
  color: #374151;
}

.category-bullets li span.check-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--comic-green);
  border: 2px solid var(--ink-black);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 950;
}

/* ==========================================================================
   5. 套餐价格对比表 (Pricing Comparison)
   ========================================================================== */
.pricing-section {
  padding: 80px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.price-card {
  background: #FFFFFF;
  border: var(--border-thick) solid var(--ink-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 30px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

/* 热门爆款卡片突出显示 */
.price-card.popular {
  background: #FFFDF0;
  border: 4px solid var(--ink-black);
  box-shadow: 10px 10px 0px var(--ink-black);
  transform: scale(1.03);
  z-index: 2;
}

.price-card.popular:hover {
  transform: scale(1.03) translateY(-6px);
}

.popular-ribbon {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--comic-pink);
  color: #FFFFFF;
  font-weight: 950;
  font-size: 0.9rem;
  padding: 6px 18px;
  border: 2.5px solid var(--ink-black);
  border-radius: 999px;
  box-shadow: 3px 3px 0px var(--ink-black);
  white-space: nowrap;
}

.plan-name {
  font-size: 1.4rem;
  font-weight: 950;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.plan-desc {
  font-size: 0.88rem;
  color: #6B7280;
  font-weight: 600;
  margin-bottom: 18px;
}

.plan-price-box {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 2px dashed var(--ink-black);
}

.price-num {
  font-size: 2.8rem;
  font-weight: 950;
  line-height: 1;
  color: var(--ink-black);
}

.price-num span.currency {
  font-size: 1.5rem;
  margin-right: 2px;
}

.price-period {
  font-size: 0.9rem;
  font-weight: 800;
  color: #6B7280;
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  flex-grow: 1;
}

.plan-features-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.4;
}

.plan-features-list li .bullet-dot {
  width: 18px;
  height: 18px;
  min-width: 18px;
  background: var(--comic-yellow);
  border: 2px solid var(--ink-black);
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 900;
  margin-top: 2px;
}

.plan-features-list li.highlight-feature {
  color: var(--comic-pink);
  font-weight: 900;
}

.price-cta-btn {
  width: 100%;
}

/* ==========================================================================
   6. 用户评价 (Testimonials / Reviews)
   ========================================================================== */
.reviews-section {
  padding: 70px 0;
  background: #E8F8FF;
  border-top: var(--border-thick) solid var(--ink-black);
  border-bottom: var(--border-thick) solid var(--ink-black);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-bubble {
  background: #FFFFFF;
  border: var(--border-thick) solid var(--ink-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 26px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* 漫画对话气泡小角 */
.review-bubble::after {
  content: "";
  position: absolute;
  bottom: -18px;
  left: 45px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 18px 14px 0 0;
  border-color: #FFFFFF transparent transparent transparent;
  z-index: 2;
}

.review-bubble::before {
  content: "";
  position: absolute;
  bottom: -23px;
  left: 43px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 22px 18px 0 0;
  border-color: var(--ink-black) transparent transparent transparent;
  z-index: 1;
}

.review-stars {
  color: #FFB800;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.review-text {
  font-weight: 700;
  font-size: 0.98rem;
  line-height: 1.6;
  color: #1F2937;
  margin-bottom: 16px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

.author-avatar {
  width: 46px;
  height: 46px;
  border: 2.5px solid var(--ink-black);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.2rem;
  background: var(--comic-yellow);
}

.author-info h4 {
  font-size: 1rem;
  font-weight: 900;
}

.author-info p {
  font-size: 0.8rem;
  color: #6B7280;
  font-weight: 700;
}

/* ==========================================================================
   7. 常见问题解答 (FAQ)
   ========================================================================== */
.faq-section {
  padding: 80px 0;
}

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

.faq-item {
  background: #FFFFFF;
  border: var(--border-thick) solid var(--ink-black);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: box-shadow 0.15s ease;
}

.faq-item:hover {
  box-shadow: var(--shadow-lg);
}

.faq-item summary {
  padding: 20px 24px;
  font-size: 1.15rem;
  font-weight: 900;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  background: #FFFFFF;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 30px;
  height: 30px;
  border: 2px solid var(--ink-black);
  border-radius: 50%;
  background: var(--comic-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 900;
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
  background: var(--comic-pink);
  color: #FFF;
}

.faq-answer {
  padding: 0 24px 22px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.65;
  color: #374151;
  border-top: 2px dashed #E5E7EB;
  margin-top: 8px;
  padding-top: 16px;
}

/* ==========================================================================
   8. 底部召唤横幅 (Bottom Banner)
   ========================================================================== */
.bottom-cta-banner {
  margin: 40px auto 70px;
  background: var(--comic-yellow);
  border: var(--border-thick) solid var(--ink-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 50px 30px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner-title {
  font-size: 2.8rem;
  font-weight: 950;
  margin-bottom: 14px;
}

.cta-banner-desc {
  font-size: 1.2rem;
  font-weight: 700;
  max-width: 600px;
  margin: 0 auto 28px;
}

/* ==========================================================================
   9. 页脚规范 (Footer) - 严谨保留四个特定标题，均新标签页打开
   ========================================================================== */
.comic-footer {
  background: var(--ink-black);
  color: #FFFFFF;
  border-top: var(--border-thick) solid var(--ink-black);
  padding: 40px 0 30px;
  text-align: center;
}

.footer-nav-list {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
  list-style: none;
  margin-bottom: 24px;
}

.footer-link {
  font-size: 1.15rem;
  font-weight: 900;
  color: #FFFFFF;
  text-decoration: none;
  padding: 8px 18px;
  border: 2px solid transparent;
  border-radius: 8px;
  transition: all 0.15s ease;
  position: relative;
}

.footer-link:hover {
  color: var(--comic-yellow);
  border-color: var(--comic-yellow);
  background: rgba(255, 230, 0, 0.1);
  transform: translateY(-2px);
}

.footer-copyright {
  font-size: 0.9rem;
  color: #9CA3AF;
  font-weight: 600;
}

/* ==========================================================================
   10. 内页专用布局样式 (About / Terms / Privacy / Sitemap)
   ========================================================================== */
.inner-page-header {
  padding: 40px 0 20px;
  text-align: center;
}

.inner-page-card {
  background: #FFFFFF;
  border: var(--border-thick) solid var(--ink-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  margin-bottom: 60px;
}

.inner-section {
  margin-bottom: 36px;
}

.inner-section:last-child {
  margin-bottom: 0;
}

.inner-section h2 {
  font-size: 1.7rem;
  font-weight: 900;
  margin-bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--comic-yellow);
  padding: 4px 14px;
  border: 2.5px solid var(--ink-black);
  border-radius: 8px;
  box-shadow: 2px 2px 0 var(--ink-black);
}

.inner-section p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #374151;
  font-weight: 600;
  margin-bottom: 12px;
}

.inner-section ul {
  padding-left: 24px;
  margin-bottom: 14px;
}

.inner-section ul li {
  font-size: 1rem;
  line-height: 1.7;
  font-weight: 700;
  color: #374151;
  margin-bottom: 6px;
}

/* ==========================================================================
   11. 响应式适配 (Mobile Responsive @media)
   ========================================================================== */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-headline {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  /* 导航栏简化 */
  .comic-nav {
    top: 10px;
    padding: 0 12px;
  }
  .nav-inner {
    border-radius: var(--radius-md);
    padding: 10px 16px;
    flex-wrap: wrap;
    gap: 10px;
  }
  .nav-links {
    display: none; /* 移动端隐藏冗长链接，聚焦核心转化 */
  }
  .nav-cta {
    width: 100%;
    margin-top: 6px;
    padding: 12px 18px;
    font-size: 1rem;
  }

  /* 主视觉区单栏全宽 */
  .hero-section {
    padding: 20px 0 40px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-headline {
    font-size: 2.4rem;
  }
  .hero-desc {
    font-size: 1.08rem;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .comic-btn-lg {
    width: 100%;
    padding: 16px 20px;
    font-size: 1.15rem;
  }

  /* 卡片单栏 */
  .features-grid,
  .streaming-ai-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .price-card.popular {
    transform: none;
  }
  .price-card.popular:hover {
    transform: translateY(-4px);
  }

  .section-title {
    font-size: 2rem;
  }
  .cta-banner-title {
    font-size: 2rem;
  }

  /* 页脚单栏 */
  .footer-nav-list {
    flex-direction: column;
    gap: 16px;
  }
  .footer-link {
    display: inline-block;
    width: 100%;
    max-width: 260px;
    background: #1F2937;
  }

  .inner-page-card {
    padding: 20px 16px;
  }
  .inner-section h2 {
    font-size: 1.35rem;
  }

  .comic-btn-experience {
    font-size: 1.2rem !important;
    padding: 14px 20px !important;
    width: 100% !important;
    letter-spacing: 0.8px !important;
  }
}