/* ===================================================================
   巨浪云 (JuLang Cloud) 官方落地页样式表 - 纯原生 CSS (无第三方库依赖，极速秒开)
   Domain: julangyun.mom
   Author: 巨浪云技术团队
   =================================================================== */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #0f172a;
  --bg-card: rgba(18, 28, 48, 0.72);
  --bg-card-hover: rgba(28, 43, 73, 0.88);
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-purple: #7928ca;
  --accent-pink: #ff007f;
  --accent-green: #10b981;
  --accent-gold: #f59e0b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(0, 242, 254, 0.35);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --shadow-card: 0 12px 36px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 25px rgba(0, 242, 254, 0.25);
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: #060913;
  color: var(--text-main);
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.65;
  background-color: transparent !important;
}

/* ===================================================================
   1. 动态背景 (电影级超高清深海巨浪与冲浪手 - 纯原生 CSS 硬件加速呼吸潮涌)
   =================================================================== */
.dynamic-bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0 !important;
  pointer-events: none;
  overflow: hidden;
  background-color: #060913;
}

.site-header, main, .site-footer {
  position: relative;
  z-index: 2;
}

/* 超高清巨浪与冲浪者底图 - 硬件加速深海呼吸慢涌动效 */
.surf-photo-bg {
  position: absolute;
  top: -3%;
  left: -3%;
  width: 106%;
  height: 106%;
  background: 
    linear-gradient(180deg, rgba(6,9,19,0.65) 0%, rgba(6,12,24,0.20) 45%, rgba(6,9,19,0.85) 100%),
    url('../images/surf-hero-hd.jpg?v=20261109_surfer') center 45% / cover no-repeat;
  will-change: transform;
  animation: oceanBreath 22s ease-in-out infinite alternate;
}

/* 巨浪发光潮涌水粼层 */
.wave-light-sweep {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 60% 50%, rgba(0, 242, 254, 0.16) 0%, rgba(79, 172, 254, 0.06) 40%, transparent 70%);
  mix-blend-mode: screen;
  will-change: opacity, transform;
  animation: lightSweepPulse 8s ease-in-out infinite alternate;
}

/* 浪尖飞溅水雾与微光 */
.wave-spindrift {
  position: absolute;
  bottom: 25%;
  left: 20%;
  width: 60%;
  height: 35%;
  background: radial-gradient(ellipse at center, rgba(0, 242, 254, 0.14) 0%, transparent 70%);
  filter: blur(25px);
  animation: spindriftMist 6s ease-in-out infinite alternate;
}

@keyframes oceanBreath {
  0% {
    transform: scale(1) translate3d(0, 0, 0);
  }
  50% {
    transform: scale(1.05) translate3d(-1.5%, -1%, 0);
  }
  100% {
    transform: scale(1.02) translate3d(1%, -0.5%, 0);
  }
}

@keyframes lightSweepPulse {
  0% {
    opacity: 0.35;
    transform: scale(0.96) translate3d(-15px, 0, 0);
  }
  100% {
    opacity: 0.85;
    transform: scale(1.04) translate3d(15px, -10px, 0);
  }
}

@keyframes spindriftMist {
  0% {
    opacity: 0.3;
    transform: translateY(0) scale(0.95);
  }
  100% {
    opacity: 0.75;
    transform: translateY(-20px) scale(1.08);
  }
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.45;
  animation: floatOrb 22s infinite alternate ease-in-out;
}

.bg-orb-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #00f2fe 0%, #4facfe 70%, transparent 100%);
  top: -120px;
  left: -120px;
  animation-duration: 24s;
}

.bg-orb-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, #7928ca 0%, #2b0b63 70%, transparent 100%);
  bottom: -150px;
  right: -150px;
  animation-duration: 28s;
  animation-delay: -6s;
}

.bg-orb-3 {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, #0066ff 0%, #00f2fe 80%, transparent 100%);
  top: 45%;
  left: 40%;
  transform: translate(-50%, -50%);
  animation-duration: 32s;
  animation-delay: -12s;
  opacity: 0.25;
}

.bg-grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.8;
}

@keyframes floatOrb {
  0% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(70px, -90px) scale(1.12);
  }
  66% {
    transform: translate(-80px, 60px) scale(0.92);
  }
  100% {
    transform: translate(40px, 110px) scale(1.05);
  }
}

/* ===================================================================
   2. 布局与通用组件
   =================================================================== */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: #fff;
  text-shadow: 0 0 10px rgba(0, 242, 254, 0.6);
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  outline: none;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #a855f7 0%, #8b5cf6 45%, #7c3aed 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(147, 51, 234, 0.45);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #c084fc 0%, #a855f7 45%, #8b5cf6 100%);
  box-shadow: 0 8px 30px rgba(168, 85, 247, 0.75);
  color: #ffffff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: var(--accent-cyan);
  color: #fff;
  transform: translateY(-2px);
}

.btn-cta-lg {
  padding: 16px 38px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.btn-pulse {
  animation: pulseGlow 2.5s infinite;
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 16px rgba(168, 85, 247, 0.5);
  }
  50% {
    box-shadow: 0 0 35px rgba(192, 132, 252, 0.85), 0 0 15px rgba(147, 51, 234, 0.7);
  }
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: rgba(168, 85, 247, 0.14);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.35);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 52px auto;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 40%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===================================================================
   3. 顶部导航 Header
   =================================================================== */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

/* 左侧 Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-svg-box {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(121, 40, 202, 0.2) 100%);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.25);
  overflow: hidden;
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  filter: drop-shadow(0 0 6px rgba(0, 242, 254, 0.45));
  transition: var(--transition);
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.08) rotate(5deg);
  filter: drop-shadow(0 0 10px rgba(0, 242, 254, 0.8));
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #ffffff 30%, #00f2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-cyan);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 6px 2px;
  position: relative;
}

.nav-links a:hover, .nav-links a.active {
  color: #fff;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-links a:hover::after {
  width: 100%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* ===================================================================
   4. Hero 首屏展示
   =================================================================== */
.hero-section {
  padding: 90px 0 60px 0;
  text-align: center;
  position: relative;
}

.hero-pill {
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.gradient-text {
  background: linear-gradient(135deg, #e9d5ff 0%, #c084fc 35%, #a855f7 70%, #9333ea 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 20px rgba(168, 85, 247, 0.45));
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 820px;
  margin: 0 auto 38px auto;
  line-height: 1.8;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.hero-highlights {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  padding: 24px 30px;
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  max-width: 960px;
  margin: 0 auto;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.highlight-icon {
  font-size: 1.4rem;
  color: var(--accent-cyan);
}

.highlight-text strong {
  display: block;
  font-size: 1.15rem;
  color: #fff;
}

.highlight-text span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===================================================================
   5. 价格方案 (必须所有价格同排横向展示 - 严格遵从指令)
   =================================================================== */
.pricing-section {
  padding: 90px 0;
  position: relative;
}

/* 4列完全同排网格布局 */
.pricing-grid-same-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}

.pricing-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card), 0 0 25px rgba(0, 242, 254, 0.2);
  background: var(--bg-card-hover);
}

/* 热门推荐卡片突出显示 */
.pricing-card.featured {
  border-color: var(--accent-cyan);
  background: linear-gradient(180deg, rgba(0, 242, 254, 0.08) 0%, rgba(18, 28, 48, 0.85) 100%);
  box-shadow: 0 10px 40px rgba(0, 242, 254, 0.25);
  transform: scale(1.03);
  z-index: 2;
}

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

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #ff007f 0%, #7928ca 100%);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(255, 0, 127, 0.4);
}

.plan-header {
  margin-bottom: 20px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  min-height: 40px;
}

.plan-price-box {
  margin: 18px 0 24px 0;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.price-currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.price-num {
  font-size: 2.5rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -1px;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-left: 4px;
}

.plan-features {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: #cbd5e1;
  margin-bottom: 12px;
}

.feature-check {
  color: var(--accent-green);
  font-weight: bold;
}

.plan-action {
  margin-top: auto;
}

.plan-action .btn {
  width: 100%;
}

/* ===================================================================
   6. 核心优势与特点 Features
   =================================================================== */
.features-section {
  padding: 80px 0;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card);
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 242, 254, 0.1);
  color: var(--accent-cyan);
  font-size: 1.8rem;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===================================================================
   7. 节点网络与测速展示 Nodes
   =================================================================== */
.nodes-section {
  padding: 80px 0;
}

.nodes-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.nodes-table th, .nodes-table td {
  padding: 16px 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nodes-table th {
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nodes-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.node-flag {
  margin-right: 8px;
  font-size: 1.2rem;
}

.node-status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
  margin-right: 6px;
}

.node-ping-fast {
  color: var(--accent-green);
  font-weight: 600;
}

/* ===================================================================
   8. 资讯专栏 / 6篇深度文章聚合展示
   =================================================================== */
.articles-section {
  padding: 90px 0;
}

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

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: rgba(168, 85, 247, 0.45);
  box-shadow: 0 12px 30px rgba(147, 51, 234, 0.22);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: #c084fc;
  margin-bottom: 12px;
}

.article-meta span:last-child {
  color: #d8b4fe;
  font-weight: 500;
}

.article-card h3 {
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-card h3 a {
  color: #fff;
  transition: var(--transition);
}

.article-card h3 a:hover {
  color: #c084fc;
}

.article-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 14px;
}

.read-more-link {
  color: #c084fc;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.read-more-link:hover {
  color: #e9d5ff;
  text-shadow: 0 0 10px rgba(192, 132, 252, 0.6);
  transform: translateX(4px);
}

/* ===================================================================
   9. 用户真实评价 Reviews
   =================================================================== */
.reviews-section {
  padding: 80px 0;
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-rating {
  color: var(--accent-gold);
  font-size: 1.05rem;
  margin-bottom: 14px;
}

.review-card p {
  font-size: 0.92rem;
  color: #e2e8f0;
  line-height: 1.7;
  margin-bottom: 18px;
}

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

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00f2fe, #7928ca);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: #fff;
  font-size: 0.9rem;
}

.author-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
}

.author-info span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===================================================================
   10. 常见问题 FAQ
   =================================================================== */
.faq-section {
  padding: 80px 0;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--border-glow);
}

.faq-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-icon-q {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: rgba(0, 242, 254, 0.15);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.faq-item p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  padding-left: 36px;
}

/* ===================================================================
   11. 文章详情页专用排版 Article Detail Pages
   =================================================================== */
.article-header-banner {
  padding: 60px 0 35px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 45px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 20px;
}

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

.breadcrumbs a:hover {
  color: #c084fc;
}

.article-single-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
}

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

.article-container-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.article-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  font-size: 1.05rem;
  line-height: 1.9;
  color: #e2e8f0;
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin: 36px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-content h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 22px;
  background: linear-gradient(180deg, #c084fc 0%, #a855f7 100%);
  border-radius: 2px;
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #f1f5f9;
  margin: 26px 0 12px 0;
}

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

.article-content ul, .article-content ol {
  margin: 0 0 24px 24px;
}

.article-content li {
  margin-bottom: 10px;
}

.article-content blockquote {
  margin: 24px 0;
  padding: 16px 22px;
  border-left: 4px solid #a855f7;
  background: rgba(168, 85, 247, 0.08);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: #cbd5e1;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
}

.article-content th, .article-content td {
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  text-align: left;
}

.article-content th {
  background: rgba(255, 255, 255, 0.05);
  font-weight: 600;
  color: var(--accent-cyan);
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.12) 0%, rgba(121, 40, 202, 0.15) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 26px;
  text-align: center;
  margin: 40px 0;
}

.article-cta-box h3 {
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 10px;
}

.article-sidebar {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.sidebar-widget h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-widget ul {
  list-style: none;
}

.sidebar-widget li {
  margin-bottom: 12px;
}

.sidebar-widget a {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
  display: block;
}

.sidebar-widget a:hover {
  color: var(--accent-cyan);
  padding-left: 4px;
}

/* ===================================================================
   12. 底部 Footer 与 友情外链
   =================================================================== */
.site-footer {
  border-top: 1px solid var(--border-color);
  background: rgba(6, 9, 17, 0.95);
  padding: 60px 0 30px 0;
  margin-top: 90px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand-info p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 16px 0 20px 0;
  max-width: 380px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

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

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

.footer-links a {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ===================================================================
   13. 移动端与响应式适配
   =================================================================== */
@media (max-width: 1024px) {
  .pricing-grid-same-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-8px);
  }
  .features-grid, .articles-grid, .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-container-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .header-container {
    height: 68px;
  }
  .nav-links {
    display: none; /* 移动端精简突出 CTA */
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .pricing-grid-same-row {
    grid-template-columns: 1fr;
  }
  .features-grid, .articles-grid, .reviews-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .article-content {
    padding: 24px 18px;
  }
  .nodes-table th:nth-child(4), .nodes-table td:nth-child(4) {
    display: none;
  }
  .surf-scene {
    height: 40vh;
    min-height: 260px;
  }
  .surfer-wrapper {
    transform: scale(0.65);
    bottom: 60px;
  }
  @keyframes surferTrack {
    0% { transform: scale(0.65) translate3d(-150px, 15px, 0); }
    50% { transform: scale(0.65) translate3d(120px, -25px, 0); }
    100% { transform: scale(0.65) translate3d(-150px, 15px, 0); }
  }
}