/* ==========================================================================
   NOW 加速 - NEO-BRUTALISM POP DESIGN SYSTEM
   高饱和、强冲击、硬阴影、粗黑边框、波普贴纸
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;700;800;900&family=Space+Grotesk:wght@600;700&family=Noto+Sans+SC:wght@500;700;900&family=Fira+Code:wght@500;700&display=swap');

:root {
  /* 标志性新野兽派大胆撞色调色板 */
  --lemon-yellow: #FFE600;
  --electric-purple: #7B2CBF;
  --purple-light: #9D4EDD;
  --purple-glow: #E0AAFF;
  --hot-pink: #FF007F;
  --pink-light: #FF70A6;
  --cyan: #00F0FF;
  --cyan-deep: #00B4D8;
  --lime-green: #25E27D;
  --pure-black: #000000;
  --pure-white: #FFFFFF;
  --bg-cream: #FFFDF0;
  --bg-dots: #EAE5D9;
  --dark-surface: #121212;
  --gray-100: #F4F4F6;
  --gray-200: #E5E7EB;
  --gray-800: #1F2937;

  /* 新野兽派结构特征 */
  --brutal-border: 3px solid #000000;
  --brutal-border-thick: 4px solid #000000;
  --brutal-border-thin: 2px solid #000000;
  --hard-shadow-sm: 3px 3px 0px #000000;
  --hard-shadow: 6px 6px 0px #000000;
  --hard-shadow-lg: 8px 8px 0px #000000;
  --hard-shadow-xl: 12px 12px 0px #000000;
  --hard-shadow-active: 2px 2px 0px #000000;

  /* 字体家族 */
  --font-heading: 'Space Grotesk', 'Plus Jakarta Sans', 'Noto Sans SC', sans-serif;
  --font-body: 'Plus Jakarta Sans', 'Noto Sans SC', sans-serif;
  --font-mono: 'Fira Code', monospace;

  /* 转角风格：新野兽派通常采用微圆角或直角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--lemon-yellow);
}

body {
  font-family: var(--font-body);
  color: var(--pure-black);
  background-color: var(--bg-cream);
  background-image: radial-gradient(var(--pure-black) 1.2px, transparent 1.2px);
  background-size: 24px 24px;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 动态背景画布 */
#dynamic-bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.65;
}

/* 页面内容包装层，保证在 Canvas 上层 */
.page-wrapper {
  position: relative;
  z-index: 1;
}

/* 文本选择高亮 */
::selection {
  background: var(--hot-pink);
  color: var(--pure-white);
}

/* 链接无下划线 */
a {
  color: inherit;
  text-decoration: none;
}

/* 容器定义 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 顶部通告滚动条 Marquee */
.top-notice-bar {
  background: var(--pure-black);
  color: var(--lemon-yellow);
  padding: 8px 0;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  border-bottom: var(--brutal-border);
  overflow: hidden;
  white-space: nowrap;
  display: flex;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marqueeScroll 25s linear infinite;
}

.marquee-content {
  display: flex;
  align-items: center;
  gap: 32px;
  padding-right: 32px;
}

.marquee-tag {
  background: var(--hot-pink);
  color: var(--pure-white);
  padding: 2px 8px;
  border: 1px solid var(--lemon-yellow);
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* 头部导航栏 */
.header-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--pure-white);
  border-bottom: var(--brutal-border-thick);
  box-shadow: 0 4px 0px rgba(0,0,0,0.15);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 12px;
  max-width: 1360px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  white-space: nowrap !important;
  word-break: keep-all !important;
  flex-shrink: 0;
}

.brand-badge {
  background: var(--lemon-yellow);
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow-sm);
  padding: 3px 8px;
  font-size: 1.15rem;
  transform: rotate(-3deg);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap !important;
  flex-shrink: 0;
}

.brand-badge span {
  color: var(--hot-pink);
}

.brand-title {
  letter-spacing: -0.5px;
  color: var(--pure-black);
  white-space: nowrap !important;
  word-break: keep-all !important;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  white-space: nowrap !important;
  flex-shrink: 1;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  transition: all 0.15s cubic-bezier(0.2, 0.9, 0.4, 1.1);
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap !important;
  word-break: keep-all !important;
  flex-shrink: 0;
}

.nav-link:hover {
  background: var(--lemon-yellow);
  border: var(--brutal-border-thin);
  box-shadow: var(--hard-shadow-sm);
  transform: translate(-2px, -2px);
}

.nav-link.active {
  background: var(--cyan);
  border: var(--brutal-border-thin);
  box-shadow: var(--hard-shadow-sm);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap !important;
  word-break: keep-all !important;
  flex-shrink: 0;
}

/* 按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow);
  transition: all 0.15s cubic-bezier(0.2, 0.9, 0.4, 1.1);
  user-select: none;
}

.btn:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--hard-shadow-lg);
}

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

/* 按钮变体 */
.btn-primary {
  background: var(--hot-pink);
  color: var(--pure-white);
  padding: 12px 26px;
  border-radius: var(--radius-md);
  font-size: 1.05rem;
}

.btn-primary:hover {
  background: #ff1a8c;
}

/* 紫色胶囊按钮（专属 1 元试用） */
.btn-purple-pill {
  background: var(--electric-purple);
  color: var(--pure-white);
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-size: 1.1rem;
  border: var(--brutal-border-thick);
  box-shadow: var(--hard-shadow);
}

.btn-purple-pill:hover {
  background: var(--purple-light);
  box-shadow: var(--hard-shadow-lg);
}

.btn-cyan {
  background: var(--cyan);
  color: var(--pure-black);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 1.05rem;
}

.btn-yellow {
  background: var(--lemon-yellow);
  color: var(--pure-black);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 1.05rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.9rem;
  border: var(--brutal-border-thin);
  box-shadow: var(--hard-shadow-sm);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.25rem;
}

/* 汉堡菜单按钮（移动端） */
.mobile-toggle {
  display: none;
  background: var(--lemon-yellow);
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow-sm);
  padding: 8px 12px;
  font-size: 1.2rem;
  font-weight: 900;
  cursor: pointer;
}

/* 倾斜贴纸徽标（Stickers） */
.sticker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-weight: 900;
  text-transform: uppercase;
  padding: 6px 14px;
  border: var(--brutal-border-thin);
  box-shadow: var(--hard-shadow-sm);
  letter-spacing: 0.5px;
  position: relative;
  z-index: 2;
  white-space: nowrap;
}

.sticker-rotate-left {
  transform: rotate(-4deg);
}

.sticker-rotate-right {
  transform: rotate(4deg);
}

.sticker-rotate-more {
  transform: rotate(-7deg);
}

.sticker-pink {
  background: var(--hot-pink);
  color: var(--pure-white);
}

.sticker-yellow {
  background: var(--lemon-yellow);
  color: var(--pure-black);
}

.sticker-cyan {
  background: var(--cyan);
  color: var(--pure-black);
}

.sticker-purple {
  background: var(--electric-purple);
  color: var(--pure-white);
}

.sticker-green {
  background: var(--lime-green);
  color: var(--pure-black);
}

/* 英雄区 (Hero Section) */
.hero-section {
  padding: 70px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-top-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.8rem;
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
  color: var(--pure-black);
}

.hero-title .highlight-yellow {
  background: var(--lemon-yellow);
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow-sm);
  padding: 2px 12px;
  display: inline-block;
  transform: rotate(-1deg);
}

.hero-title .highlight-pink {
  background: var(--hot-pink);
  color: var(--pure-white);
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow-sm);
  padding: 2px 12px;
  display: inline-block;
  transform: rotate(1.5deg);
}

.hero-subtitle {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.5;
  color: #111;
  margin-bottom: 32px;
  background: var(--pure-white);
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow);
  padding: 16px 22px;
  border-radius: var(--radius-md);
  position: relative;
}

.hero-slogan-lead {
  color: var(--hot-pink);
  font-size: 1.5rem;
  display: block;
  font-family: var(--font-heading);
  font-weight: 900;
  margin-bottom: 6px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-bottom: 30px;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.95rem;
  font-weight: 700;
}

.guarantee-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 英雄区右侧：视觉卡片集 (Visual Collage) */
.hero-visual-card {
  position: relative;
  z-index: 2;
}

.terminal-box {
  background: var(--pure-white);
  border: var(--brutal-border-thick);
  border-radius: var(--radius-lg);
  box-shadow: var(--hard-shadow-xl);
  overflow: hidden;
}

.terminal-header {
  background: var(--pure-black);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid #000;
}

.dot-red { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #27C93F; }

.terminal-title {
  color: var(--pure-white);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
}

.terminal-body {
  padding: 24px;
  background: #FAFAFA;
}

.terminal-stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.stat-pill-card {
  padding: 14px;
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow-sm);
  border-radius: var(--radius-md);
  text-align: center;
}

.stat-pill-card.bg-yellow { background: var(--lemon-yellow); }
.stat-pill-card.bg-cyan { background: var(--cyan); }
.stat-pill-card.bg-pink { background: var(--pink-light); }
.stat-pill-card.bg-green { background: var(--lime-green); }

.stat-pill-card .num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  display: block;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-pill-card .label {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
}

.terminal-live-chart {
  background: var(--pure-black);
  color: var(--lime-green);
  border: var(--brutal-border);
  padding: 16px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  color: var(--pure-white);
}

.live-bar-group {
  display: flex;
  align-items: flex-end;
  height: 60px;
  gap: 6px;
  padding-top: 10px;
  border-bottom: 1px dashed #444;
}

.live-bar {
  flex: 1;
  background: var(--cyan);
  border: 1px solid #000;
  transition: height 0.4s ease;
}

.live-bar:nth-child(even) { background: var(--lemon-yellow); }
.live-bar:nth-child(3n) { background: var(--hot-pink); }
.live-bar:last-child { background: var(--lime-green); }

/* 浮动漂浮贴纸 */
.floating-sticker-hero {
  position: absolute;
  z-index: 5;
}

.sticker-pos-1 {
  top: -24px;
  right: -15px;
  animation: floatAnim1 4s ease-in-out infinite alternate;
}

.sticker-pos-2 {
  bottom: -15px;
  left: -20px;
  animation: floatAnim2 3.5s ease-in-out infinite alternate;
}

@keyframes floatAnim1 {
  0% { transform: rotate(5deg) translateY(0); }
  100% { transform: rotate(8deg) translateY(-10px); }
}

@keyframes floatAnim2 {
  0% { transform: rotate(-6deg) translateY(0); }
  100% { transform: rotate(-3deg) translateY(8px); }
}

/* 核心板块公共标题与布局 */
.section {
  padding: 80px 0;
  position: relative;
}

.section-alt {
  background: var(--pure-white);
  border-top: var(--brutal-border-thick);
  border-bottom: var(--brutal-border-thick);
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px;
}

.section-badge {
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.section-desc {
  font-size: 1.15rem;
  font-weight: 600;
  color: #333;
}

/* ==========================================================================
   板块 3：节点延迟和状态板块 (Live Ping & Node Status)
   ========================================================================== */
.nodes-board {
  background: var(--pure-white);
  border: var(--brutal-border-thick);
  border-radius: var(--radius-lg);
  box-shadow: var(--hard-shadow-xl);
  overflow: hidden;
}

.nodes-board-top {
  background: var(--lemon-yellow);
  padding: 18px 24px;
  border-bottom: var(--brutal-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.nodes-status-summary {
  display: flex;
  align-items: center;
  gap: 20px;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--pure-black);
  color: var(--lime-green);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

.pulse-dot {
  width: 10px;
  height: 10px;
  background: var(--lime-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--lime-green);
  animation: pulseAnim 1.5s infinite;
}

@keyframes pulseAnim {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.nodes-filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tab-btn {
  background: var(--pure-white);
  border: var(--brutal-border-thin);
  box-shadow: var(--hard-shadow-sm);
  padding: 6px 14px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.9rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.tab-btn:hover, .tab-btn.active {
  background: var(--pure-black);
  color: var(--pure-white);
  transform: translate(-2px, -2px);
}

.node-grid-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
  padding: 24px;
}

.node-card {
  border: var(--brutal-border);
  border-radius: var(--radius-md);
  padding: 16px;
  background: var(--pure-white);
  box-shadow: var(--hard-shadow);
  transition: all 0.2s ease;
  position: relative;
}

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

.node-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.node-flag-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 900;
  font-family: var(--font-heading);
  font-size: 1.1rem;
}

.node-flag {
  font-size: 1.4rem;
}

.node-type-badge {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 2px 8px;
  border: 1px solid #000;
  border-radius: var(--radius-sm);
}

.badge-iplc { background: var(--lemon-yellow); }
.badge-bgp { background: var(--cyan); }
.badge-isp { background: var(--pink-light); }

.node-metrics {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--gray-100);
  border: 1.5px solid #000;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

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

.metric-label {
  font-size: 0.75rem;
  color: #666;
  font-weight: 700;
}

.metric-val {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.15rem;
  color: #000;
}

.val-green { color: #00873E; }
.val-cyan { color: #007799; }

.node-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 700;
}

.tag-stream {
  color: var(--electric-purple);
  background: #F3E8FF;
  padding: 2px 6px;
  border: 1px solid #000;
  border-radius: 4px;
}

.test-ping-btn {
  background: var(--pure-white);
  border: 1.5px solid #000;
  cursor: pointer;
  padding: 3px 8px;
  font-size: 0.75rem;
  font-weight: 800;
  border-radius: 4px;
  transition: all 0.1s ease;
}

.test-ping-btn:hover {
  background: var(--lemon-yellow);
}

/* ==========================================================================
   板块 4：套餐价格板块 (Pricing Packages)
   粉色卡片放价格，紫色胶囊放“1元试用”按钮
   ========================================================================== */
.pricing-cycle-switcher {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.switcher-box {
  background: var(--pure-white);
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow);
  padding: 6px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  gap: 8px;
}

.cycle-btn {
  border: none;
  background: transparent;
  padding: 10px 24px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.15s ease;
}

.cycle-btn.active {
  background: var(--pure-black);
  color: var(--lemon-yellow);
  box-shadow: var(--hard-shadow-sm);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
}

.pricing-card {
  border: var(--brutal-border-thick);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  box-shadow: var(--hard-shadow-lg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--hard-shadow-xl);
}

/* 粉色卡片放价格 - 突出主打与热门套餐 */
.pricing-card.card-pink {
  background: #FFE5EC;
  border-color: #000;
}

.pricing-card.card-white {
  background: var(--pure-white);
}

.pricing-card.card-yellow {
  background: #FFF9D2;
}

.pricing-card.card-featured {
  background: #FFD1DC;
  transform: scale(1.03);
  z-index: 3;
}

.pricing-card.card-featured:hover {
  transform: scale(1.03) translateY(-8px);
}

.pricing-badge-top {
  position: absolute;
  top: -18px;
  right: 20px;
}

.plan-header {
  margin-bottom: 24px;
  border-bottom: 2px dashed #000;
  padding-bottom: 20px;
}

.plan-name {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  margin-bottom: 6px;
}

.plan-subtitle {
  font-size: 0.95rem;
  font-weight: 700;
  color: #444;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-top: 14px;
}

.price-currency {
  font-size: 1.6rem;
  font-weight: 900;
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 3.6rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -1px;
}

.price-cycle {
  font-size: 1rem;
  font-weight: 700;
  color: #555;
}

.plan-features-list {
  list-style: none;
  margin-bottom: 30px;
  flex-grow: 1;
}

.plan-features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--lemon-yellow);
  border: 1.5px solid #000;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 900;
  flex-shrink: 0;
}

/* 试用条幅 Banner */
.trial-banner-box {
  margin-top: 45px;
  background: var(--lemon-yellow);
  border: var(--brutal-border-thick);
  border-radius: var(--radius-lg);
  box-shadow: var(--hard-shadow-lg);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.trial-banner-text h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 900;
  margin-bottom: 4px;
}

.trial-banner-text p {
  font-size: 1rem;
  font-weight: 700;
  color: #222;
}

/* ==========================================================================
   板块 5：核心优势板块 (Core Advantages)
   黄色卡片讲线路、倾斜排列的高饱和度徽标贴纸：“100% SLA”、“4K 极速”、“抗封锁”
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  border: var(--brutal-border-thick);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--hard-shadow);
  transition: all 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.1);
  position: relative;
}

.feature-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--hard-shadow-xl);
}

/* 黄色卡片讲线路 */
.feature-card.card-line-yellow {
  background: var(--lemon-yellow);
  grid-column: span 2;
}

.feature-card.card-purple {
  background: #E8D7FF;
}

.feature-card.card-cyan {
  background: #D5F8FF;
}

.feature-card.card-pink {
  background: #FFE0ED;
}

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  background: var(--pure-white);
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow-sm);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.feature-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: #111;
  margin-bottom: 16px;
}

.feature-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ==========================================================================
   板块 6：常见问题板块 (FAQ Accordion)
   ========================================================================== */
.faq-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border: var(--brutal-border-thick);
  border-radius: var(--radius-md);
  background: var(--pure-white);
  box-shadow: var(--hard-shadow);
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-item.active {
  box-shadow: var(--hard-shadow-lg);
  border-color: var(--pure-black);
}

.faq-question {
  padding: 22px 26px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--pure-white);
  transition: background 0.15s ease;
}

.faq-item.active .faq-question {
  background: var(--lemon-yellow);
}

.faq-icon {
  width: 32px;
  height: 32px;
  background: var(--pure-white);
  border: var(--brutal-border-thin);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--hot-pink);
  color: var(--pure-white);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  background: var(--pure-white);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  transition: max-height 0.35s ease-in-out;
}

.faq-answer-inner {
  padding: 0 26px 22px;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.7;
  color: #222;
  border-top: 1.5px dashed #000;
  padding-top: 16px;
}

/* ==========================================================================
   板块 7：用户评价板块 (User Reviews / Testimonials)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  border: var(--brutal-border);
  border-radius: var(--radius-lg);
  padding: 26px;
  background: var(--pure-white);
  box-shadow: var(--hard-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
}

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

.review-card.card-pop-1 { background: #FFFBF0; }
.review-card.card-pop-2 { background: #F3F8FF; }
.review-card.card-pop-3 { background: #FFF0F5; }

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: var(--brutal-border-thin);
  box-shadow: var(--hard-shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: var(--lemon-yellow);
}

.avatar-purple { background: var(--purple-glow); }
.avatar-pink { background: var(--pink-light); }
.avatar-cyan { background: var(--cyan); }
.avatar-yellow { background: var(--lemon-yellow); }

.review-author {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
}

.review-role {
  font-size: 0.82rem;
  color: #555;
  font-weight: 700;
}

.review-stars {
  color: #FF9900;
  font-size: 1.1rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.6;
  color: #222;
  margin-bottom: 16px;
}

.review-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid #E5E7EB;
  padding-top: 12px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #666;
}

/* ==========================================================================
   板块 8：底部行动召唤与页脚 (Bottom CTA & Footer)
   注意：严格遵循要求，网站地图和 robots.txt 不要出现在落地页里
   ========================================================================== */
.bottom-cta-section {
  padding: 80px 0;
  background: var(--electric-purple);
  color: var(--pure-white);
  border-top: var(--brutal-border-thick);
  border-bottom: var(--brutal-border-thick);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box-inner {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.bottom-cta-title {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
}

.bottom-cta-desc {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 36px;
  color: #F3E8FF;
}

/* 页脚 */
.site-footer {
  background: var(--pure-black);
  color: var(--pure-white);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h4 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  margin-bottom: 14px;
  color: var(--lemon-yellow);
}

.footer-brand p {
  font-size: 0.95rem;
  color: #AAA;
  max-width: 400px;
  line-height: 1.6;
  font-weight: 600;
}

.footer-col h5 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--cyan);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #CCC;
  font-size: 0.92rem;
  font-weight: 600;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: var(--lemon-yellow);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #888;
  font-weight: 600;
}

/* 浮动行动条 (Floating Sticky Bar) */
.floating-bar {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--lemon-yellow);
  border: var(--brutal-border-thick);
  box-shadow: var(--hard-shadow-lg);
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  gap: 20px;
  z-index: 999;
  animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
  from { transform: translate(-50%, 100px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

.floating-bar-text {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.05rem;
}

/* ==========================================================================
   知识库独立页面 & 文章页面专属样式 (Tutorial & Article System)
   ========================================================================== */
.kb-hero {
  background: var(--lemon-yellow);
  border-bottom: var(--brutal-border-thick);
  padding: 60px 0;
  text-align: center;
}

.kb-search-box {
  max-width: 600px;
  margin: 24px auto 0;
  display: flex;
  gap: 12px;
}

.kb-input {
  flex-grow: 1;
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow-sm);
  padding: 14px 20px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  outline: none;
}

.kb-input:focus {
  border-color: var(--pure-black);
  box-shadow: var(--hard-shadow);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-top: 40px;
}

.article-card {
  border: var(--brutal-border-thick);
  border-radius: var(--radius-lg);
  padding: 30px;
  background: var(--pure-white);
  box-shadow: var(--hard-shadow-lg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

.article-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--hard-shadow-xl);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.article-card-title {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 900;
  line-height: 1.35;
  margin-bottom: 12px;
  color: var(--pure-black);
}

.article-card-summary {
  font-size: 0.98rem;
  color: #444;
  line-height: 1.6;
  font-weight: 600;
  margin-bottom: 20px;
}

.article-keywords-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.keyword-tag {
  background: var(--gray-100);
  border: 1.5px solid #000;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 800;
  color: #000;
}

/* 单篇文章排版规范 (Single Article View) */
.article-detail-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  padding: 50px 0 80px;
}

.article-sidebar {
  position: sticky;
  top: 90px;
  height: fit-content;
}

.sidebar-box {
  background: var(--pure-white);
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 24px;
}

.sidebar-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 900;
  margin-bottom: 14px;
  border-bottom: 2px solid #000;
  padding-bottom: 8px;
}

.toc-list {
  list-style: none;
}

.toc-list li {
  margin-bottom: 10px;
}

.toc-link {
  font-size: 0.9rem;
  font-weight: 700;
  color: #444;
  display: block;
  transition: all 0.15s ease;
}

.toc-link:hover {
  color: var(--hot-pink);
  transform: translateX(4px);
}

.article-content-body {
  background: var(--pure-white);
  border: var(--brutal-border-thick);
  border-radius: var(--radius-lg);
  box-shadow: var(--hard-shadow-lg);
  padding: 48px;
}

.article-header {
  border-bottom: var(--brutal-border);
  padding-bottom: 28px;
  margin-bottom: 32px;
}

.article-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: #666;
}

.article-breadcrumbs a {
  color: var(--pure-black);
}

.article-breadcrumbs a:hover {
  text-decoration: underline;
  color: var(--hot-pink);
}

.article-main-title {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.article-info-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #555;
}

/* 正文排版 */
.article-content-body h2 {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 900;
  margin: 36px 0 18px;
  border-left: 6px solid var(--lemon-yellow);
  padding-left: 12px;
}

.article-content-body h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  margin: 24px 0 12px;
}

.article-content-body p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #222;
  margin-bottom: 20px;
  font-weight: 500;
}

.article-content-body ul, .article-content-body ol {
  margin: 0 0 24px 24px;
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-content-body li {
  margin-bottom: 8px;
  font-weight: 600;
}

/* 提示框 Callout */
.brutal-callout {
  border: var(--brutal-border);
  box-shadow: var(--hard-shadow-sm);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 28px 0;
}

.callout-yellow { background: #FFF9D2; }
.callout-pink { background: #FFE5EC; }
.callout-cyan { background: #E0F9FF; }

.callout-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 900;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 代码块 */
.code-box {
  background: #1E1E1E;
  color: #ECECEC;
  border: var(--brutal-border);
  border-radius: var(--radius-md);
  box-shadow: var(--hard-shadow-sm);
  margin: 24px 0;
  overflow: hidden;
}

.code-header {
  background: #2D2D2D;
  padding: 8px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
}

.code-copy-btn {
  background: var(--lemon-yellow);
  color: #000;
  border: 1px solid #000;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 800;
  cursor: pointer;
  border-radius: 4px;
}

.code-box pre {
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  overflow-x: auto;
  line-height: 1.6;
}

/* 表格规范 */
.brutal-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
}

.brutal-table {
  width: 100%;
  border-collapse: collapse;
  border: var(--brutal-border);
  background: var(--pure-white);
  font-size: 0.95rem;
}

.brutal-table th, .brutal-table td {
  border: 1.5px solid #000;
  padding: 12px 16px;
  text-align: left;
}

.brutal-table th {
  background: var(--lemon-yellow);
  font-family: var(--font-heading);
  font-weight: 900;
}

.brutal-table tr:nth-child(even) {
  background: #F9F9FB;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  .pricing-card.card-featured {
    transform: none;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .feature-card.card-line-yellow {
    grid-column: span 1;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .article-detail-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
@media (max-width: 1240px) and (min-width: 1081px) {
  .nav-menu {
    gap: 4px;
  }
  .nav-link {
    font-size: 0.88rem;
    padding: 5px 8px;
  }
  .nav-brand {
    font-size: 1.3rem;
  }
}

@media (max-width: 1080px) {
  .nav-menu {
    display: none;
  }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 74px;
    left: 0;
    width: 100%;
    background: var(--pure-white);
    border-bottom: var(--brutal-border-thick);
    padding: 20px;
    box-shadow: 0 10px 0px rgba(0,0,0,0.2);
    gap: 12px;
    z-index: 1001;
  }
  .mobile-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.6rem;
  }
  .section-title {
    font-size: 2.1rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .floating-bar {
    width: 90%;
    justify-content: space-between;
    padding: 8px 16px;
  }
  .article-content-body {
    padding: 24px;
  }
}