/* ==========================================================================
   大字排版风（极致性价比 / 促销导向型）
   色彩系统：鲜艳柠檬黄 (#FFE600)、哑光纯黑 (#0a0a0a / #000000)、红色警示强调 (#EF4444)
   ========================================================================== */

:root {
  --primary: #FFE600;       /* 鲜艳柠檬黄 */
  --primary-hover: #FFF04D;
  --bg-black: #050505;      /* 哑光纯黑 */
  --bg-card: #121212;       /* 深层卡片黑 */
  --bg-card-hover: #1c1c1c;
  --text-white: #FFFFFF;
  --text-muted: #A1A1AA;
  --alert-red: #EF4444;      /* 红色警示强调 */
  --alert-red-dark: #B91C1C;
  --border-color: #27272A;
  --font-impact: 'Impact', 'Arial Black', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-base);
  background-color: var(--bg-black);
  color: var(--text-white);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  padding-bottom: 70px; /* 给吸底秒杀栏留位置 */
}

/* 动态背景画布 */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.75;
}

/* 顶部跑马灯横幅 */
.top-ticker {
  background: var(--alert-red);
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  padding: 8px 0;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  z-index: 50;
  letter-spacing: 0.5px;
}
.ticker-content {
  display: inline-block;
  animation: tickerSlide 25s linear infinite;
}
.ticker-content span {
  margin-right: 48px;
}
@keyframes tickerSlide {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* 导航栏 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-impact);
  font-size: 26px;
  font-weight: 900;
  color: #fff;
  text-decoration: none;
  letter-spacing: 1px;
}
.brand-badge {
  background: var(--primary);
  color: #000;
  font-size: 13px;
  font-family: var(--font-base);
  font-weight: 900;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}
.nav-menu {
  display: flex;
  gap: 22px;
  list-style: none;
}
.nav-menu a {
  color: #e4e4e7;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  transition: color 0.2s ease;
  position: relative;
}
.nav-menu a:hover {
  color: var(--primary);
}
.nav-cta {
  background: var(--primary);
  color: #000;
  padding: 9px 20px;
  font-weight: 900;
  border-radius: 6px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  box-shadow: 0 0 15px rgba(255, 230, 0, 0.35);
}
.nav-cta:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 0 20px rgba(255, 230, 0, 0.6);
}
.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  color: var(--primary);
  font-size: 24px;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
}

/* 黑黄斑马警示条纹分隔线 */
.caution-stripe {
  height: 18px;
  width: 100%;
  background: repeating-linear-gradient(
    -45deg,
    var(--primary),
    var(--primary) 18px,
    #000000 18px,
    #000000 36px
  );
  border-top: 1px solid #ffe600;
  border-bottom: 1px solid #ffe600;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.section {
  padding: 70px 0;
  position: relative;
}

/* 大字排版首屏 HERO */
.hero-section {
  padding: 75px 20px 60px;
  text-align: center;
  position: relative;
  background: radial-gradient(circle at 50% 20%, rgba(255, 230, 0, 0.12) 0%, transparent 65%);
}
.hero-promo-tag {
  display: inline-block;
  background: var(--alert-red);
  color: #fff;
  font-weight: 900;
  font-size: 15px;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
  letter-spacing: 1px;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.45);
  animation: pulseBadge 1.8s infinite;
}
@keyframes pulseBadge {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.hero-giant-title {
  font-family: var(--font-impact);
  font-size: clamp(48px, 9vw, 108px);
  line-height: 1.02;
  letter-spacing: -1.5px;
  color: #ffffff;
  text-transform: uppercase;
  margin-bottom: 16px;
  text-shadow: 0 5px 20px rgba(0,0,0,0.8);
}
.hero-giant-title .highlight-yellow {
  color: var(--primary);
  text-shadow: 0 0 30px rgba(255, 230, 0, 0.5);
  display: inline-block;
}
.hero-giant-title .highlight-red {
  color: var(--alert-red);
}

.hero-subtitle {
  font-size: clamp(18px, 3vw, 26px);
  font-weight: 800;
  color: #E4E4E7;
  max-width: 860px;
  margin: 0 auto 36px;
  letter-spacing: 0.5px;
}
.hero-subtitle span {
  color: var(--primary);
  background: rgba(255, 230, 0, 0.12);
  padding: 2px 8px;
  border-radius: 4px;
}

/* 首屏下方并排三个主打购买按钮 */
.hero-cta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1060px;
  margin: 0 auto 30px;
}
.hero-cta-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 22px 18px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 900;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  border: 2px solid transparent;
}
.hero-cta-btn .cta-label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.hero-cta-btn .cta-price {
  font-family: var(--font-impact);
  font-size: 32px;
  line-height: 1.1;
  margin-bottom: 4px;
}
.hero-cta-btn .cta-sub {
  font-size: 13px;
  font-weight: 700;
}

.btn-yellow {
  background: var(--primary);
  color: #000;
  border-color: var(--primary);
  box-shadow: 0 10px 30px rgba(255, 230, 0, 0.3);
}
.btn-yellow:hover {
  background: #ffffff;
  color: #000;
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(255, 230, 0, 0.5);
}

.btn-red {
  background: var(--alert-red);
  color: #ffffff;
  border-color: #f87171;
  box-shadow: 0 10px 30px rgba(239, 68, 68, 0.35);
}
.btn-red:hover {
  background: #dc2626;
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(239, 68, 68, 0.55);
}

.btn-dark {
  background: #18181b;
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
}
.btn-dark:hover {
  background: #27272a;
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(255, 230, 0, 0.25);
}

.hero-guarantee {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
}
.hero-guarantee span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #fff;
}
.hero-guarantee i {
  color: var(--primary);
}

/* 标题通用样式 */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  background: rgba(255, 230, 0, 0.15);
  border: 1px solid var(--primary);
  color: var(--primary);
  font-weight: 800;
  font-size: 13px;
  padding: 4px 14px;
  border-radius: 4px;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.section-title {
  font-family: var(--font-impact);
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: -0.5px;
  color: #ffffff;
}
.section-title span {
  color: var(--primary);
}
.section-desc {
  color: var(--text-muted);
  font-size: 16px;
  margin-top: 8px;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}

/* 板块 3：节点延迟与状态 */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.status-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.2s ease;
}
.status-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}
.node-info {
  display: flex;
  align-items: center;
  gap: 12px;
}
.node-flag {
  font-size: 28px;
}
.node-name {
  font-weight: 800;
  font-size: 16px;
  color: #fff;
}
.node-protocol {
  font-size: 12px;
  color: var(--text-muted);
}
.node-ping-box {
  text-align: right;
}
.node-ping {
  font-family: var(--font-impact);
  font-size: 24px;
  color: #22c55e;
}
.node-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 700;
  color: #22c55e;
}
.status-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 8px #22c55e;
  display: inline-block;
  animation: pulseDot 1.5s infinite;
}
@keyframes pulseDot {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.status-footer-bar {
  margin-top: 24px;
  background: #18181b;
  border-radius: 8px;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.status-stat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}
.status-stat-item strong {
  color: var(--primary);
  font-size: 18px;
  font-family: var(--font-impact);
}

/* 板块 4：套餐价格板块 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.pricing-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: 16px;
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
}
.pricing-card:hover {
  border-color: var(--primary);
  transform: translateY(-6px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.7);
}
.pricing-card.featured {
  border-color: var(--primary);
  background: linear-gradient(180deg, rgba(255, 230, 0, 0.08) 0%, #121212 100%);
  transform: scale(1.03);
  box-shadow: 0 0 35px rgba(255, 230, 0, 0.2);
}
.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #000;
  font-weight: 900;
  font-size: 13px;
  padding: 4px 18px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(255, 230, 0, 0.4);
}
.card-header {
  text-align: center;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 24px;
  margin-bottom: 24px;
}
.plan-name {
  font-size: 22px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 8px;
}
.plan-desc {
  font-size: 13px;
  color: var(--text-muted);
}
.plan-price-box {
  margin: 18px 0 8px;
  display: flex;
  justify-content: center;
  align-items: baseline;
}
.plan-currency {
  font-size: 24px;
  font-weight: 900;
  color: var(--primary);
  margin-right: 2px;
}
.plan-price {
  font-family: var(--font-impact);
  font-size: 64px;
  line-height: 1;
  color: #fff;
  letter-spacing: -1px;
}
.pricing-card.featured .plan-price {
  color: var(--primary);
}
.plan-period {
  font-size: 16px;
  color: var(--text-muted);
  font-weight: 700;
  margin-left: 4px;
}
.plan-features {
  list-style: none;
  flex-grow: 1;
  margin-bottom: 30px;
}
.plan-features li {
  padding: 10px 0;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.plan-features li i {
  color: var(--primary);
  font-weight: bold;
}
.plan-btn {
  display: block;
  text-align: center;
  padding: 16px;
  border-radius: 8px;
  font-weight: 900;
  font-size: 16px;
  text-decoration: none;
  transition: all 0.2s ease;
}
.plan-btn.primary {
  background: var(--primary);
  color: #000;
  box-shadow: 0 6px 20px rgba(255, 230, 0, 0.3);
}
.plan-btn.primary:hover {
  background: #fff;
  transform: translateY(-2px);
}
.plan-btn.outline {
  background: transparent;
  color: #fff;
  border: 2px solid var(--border-color);
}
.plan-btn.outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(255, 230, 0, 0.05);
}

/* 核心优势板块 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 28px 24px;
  border-radius: 12px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.feature-box:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  background: #18181b;
}
.feature-icon {
  font-size: 36px;
  margin-bottom: 16px;
  display: inline-block;
}
.feature-title {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}
.feature-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 横向对比表格 */
.compare-table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
  border: 2px solid var(--border-color);
  background: var(--bg-card);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.compare-table th, .compare-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-color);
}
.compare-table th {
  background: #18181b;
  font-size: 16px;
  font-weight: 900;
  color: #e4e4e7;
}
.compare-table th.highlight-col {
  background: rgba(255, 230, 0, 0.15);
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  font-size: 18px;
}
.compare-table td.highlight-col {
  background: rgba(255, 230, 0, 0.04);
  font-weight: 800;
  color: #ffffff;
}
.compare-table tr:hover {
  background: rgba(255, 255, 255, 0.02);
}
.table-badge-good {
  color: #22c55e;
  font-weight: 800;
}
.table-badge-bad {
  color: var(--alert-red);
  font-weight: 600;
}

/* 常见问题板块 FAQ */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.faq-item.active {
  border-color: var(--primary);
}
.faq-question {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 800;
  font-size: 17px;
  cursor: pointer;
  user-select: none;
  background: #161618;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  font-size: 20px;
  font-family: var(--font-impact);
  transition: transform 0.3s ease;
  color: var(--primary);
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--alert-red);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  padding: 0 24px;
  color: #d4d4d8;
  font-size: 15px;
  line-height: 1.7;
  background: var(--bg-card);
}
.faq-item.active .faq-answer {
  padding: 16px 24px 22px;
  max-height: 350px;
}

/* 知识库与教程板块 */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 22px;
}
.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  text-decoration: none;
  color: inherit;
}
.guide-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}
.guide-keyword-badge {
  display: inline-block;
  align-self: flex-start;
  background: var(--primary);
  color: #000;
  font-size: 12px;
  font-weight: 900;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.guide-title {
  font-size: 18px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 10px;
  line-height: 1.4;
}
.guide-card:hover .guide-title {
  color: var(--primary);
}
.guide-summary {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}
.guide-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #71717a;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 12px;
}
.guide-link-arrow {
  color: var(--primary);
  font-weight: 800;
}

/* 用户评价板块 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  position: relative;
}
.review-stars {
  color: var(--primary);
  font-size: 16px;
  margin-bottom: 12px;
}
.review-text {
  font-size: 14px;
  color: #d4d4d8;
  line-height: 1.6;
  margin-bottom: 18px;
}
.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #27272a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.author-info h4 {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
}
.author-info p {
  font-size: 12px;
  color: var(--text-muted);
}

/* 浮动吸底倒计时秒杀横幅 */
.sticky-bottom-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #000000;
  border-top: 3px solid var(--primary);
  padding: 12px 24px;
  z-index: 999;
  box-shadow: 0 -5px 25px rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.banner-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.banner-alert-tag {
  background: var(--alert-red);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  padding: 4px 10px;
  border-radius: 4px;
  animation: pulseBadge 1.5s infinite;
}
.banner-title {
  font-size: 16px;
  font-weight: 800;
  color: #fff;
}
.banner-title strong {
  color: var(--primary);
}
.banner-timer-box {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}
.countdown-unit {
  background: #18181b;
  border: 1px solid var(--border-color);
  color: var(--primary);
  font-family: var(--font-impact);
  font-size: 18px;
  padding: 2px 7px;
  border-radius: 4px;
  min-width: 32px;
  text-align: center;
}
.banner-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.banner-cta {
  background: var(--primary);
  color: #000;
  font-weight: 900;
  font-size: 15px;
  padding: 10px 24px;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 0 15px rgba(255, 230, 0, 0.4);
}
.banner-cta:hover {
  background: #ffffff;
  transform: scale(1.03);
}

/* 页脚 */
.footer {
  background: #09090b;
  border-top: 1px solid var(--border-color);
  padding: 48px 0 30px;
  color: var(--text-muted);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 36px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.footer-col ul li a:hover {
  color: var(--primary);
}
.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 13px;
}

/* 详情文章页 (Guides Article) 专用样式 */
.article-container {
  max-width: 860px;
  margin: 40px auto 60px;
  padding: 0 20px;
}
.article-breadcrumb {
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--text-muted);
}
.article-breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}
.article-header {
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 24px;
  margin-bottom: 32px;
}
.article-tag {
  display: inline-block;
  background: var(--primary);
  color: #000;
  font-size: 13px;
  font-weight: 900;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 14px;
}
.article-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 900;
  line-height: 1.3;
  color: #fff;
  margin-bottom: 16px;
}
.article-meta-info {
  display: flex;
  gap: 16px;
  font-size: 14px;
  color: var(--text-muted);
}
.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: #d4d4d8;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin: 36px 0 16px;
  border-left: 4px solid var(--primary);
  padding-left: 12px;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin: 24px 0 12px;
}
.article-content p {
  margin-bottom: 18px;
}
.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-cta-box {
  background: #18181b;
  border: 2px solid var(--primary);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  margin: 40px 0;
}
.article-cta-box h3 {
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 10px;
}
.article-cta-box p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 20px;
}

/* 响应式适配 */
@media (max-width: 992px) {
  .hero-cta-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #0a0a0a;
    padding: 20px;
    border-bottom: 2px solid var(--primary);
  }
  .nav-menu.active {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .sticky-bottom-banner {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
  .banner-left, .banner-right {
    justify-content: center;
  }
}