/* ==========================================================================
   XFLTD 养鸡场 (xfltd.lol) - 2026 官方落地页纯原生样式表
   零重型外部依赖 · 纯 CSS3 动态硬件加速背景 · 秒开级加载性能
   ========================================================================== */

:root {
  --bg-dark: #030712;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-card-alt: rgba(17, 24, 39, 0.6);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(245, 158, 11, 0.4);
  --border-cyan: rgba(56, 189, 248, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-gold: #f59e0b;
  --accent-gold-light: #fbbf24;
  --accent-amber: #d97706;
  --accent-cyan: #38bdf8;
  --accent-blue: #2563eb;
  --accent-green: #10b981;
  --accent-rose: #f43f5e;

  --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 50%, #d97706 100%);
  --gradient-cyan: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  --gradient-rooster: linear-gradient(135deg, #f59e0b 0%, #ea580c 50%, #dc2626 100%);
  --gradient-card: linear-gradient(180deg, rgba(30, 41, 59, 0.7) 0%, rgba(15, 23, 42, 0.85) 100%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.7);
  --shadow-gold: 0 0 25px rgba(245, 158, 11, 0.35);
  --shadow-cyan: 0 0 25px rgba(56, 189, 248, 0.3);

  --container-max: 1240px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

ul {
  list-style: none;
}

/* ==========================================================================
   纯 CSS3 极速硬件加速动态背景 (无需任何 JS，零耗能，极速秒开)
   ========================================================================== */
.dynamic-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: radial-gradient(circle at 50% 10%, #0d1527 0%, #030712 90%);
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
  will-change: transform;
}

.orb-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #f59e0b 0%, rgba(245, 158, 11, 0) 70%);
  top: -150px;
  left: 10%;
  animation: floatOrb1 22s ease-in-out infinite alternate;
}

.orb-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, #0284c7 0%, rgba(2, 132, 199, 0) 70%);
  top: 30%;
  right: -100px;
  animation: floatOrb2 26s ease-in-out infinite alternate;
}

.orb-3 {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, #ea580c 0%, rgba(234, 88, 12, 0) 70%);
  bottom: 5%;
  left: 20%;
  animation: floatOrb3 20s ease-in-out infinite alternate;
}

.cyber-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 0%, rgba(0,0,0,0.3) 70%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 0%, rgba(0,0,0,0.3) 70%, transparent 100%);
}

@keyframes floatOrb1 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(80px, 60px) scale(1.12); }
  100% { transform: translate(-60px, 100px) scale(0.95); }
}

@keyframes floatOrb2 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-100px, 80px) scale(1.15); }
  100% { transform: translate(50px, -60px) scale(0.9); }
}

@keyframes floatOrb3 {
  0% { transform: translate(0, 0) scale(0.9); }
  50% { transform: translate(120px, -70px) scale(1.1); }
  100% { transform: translate(-40px, -40px) scale(1.05); }
}

/* ==========================================================================
   XFLTD 养鸡场 · 动态小鸡巡航科技牧场系统 (Dynamic Chicken Farm System)
   纯 CSS3 硬件加速 · 8 款各具特色小鸡 · 浮空巡航 · 互动气泡
   ========================================================================== */
.chicken-pasture-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 2;
}

.floating-chick-node {
  position: absolute;
  pointer-events: auto;
  cursor: pointer;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.3s ease;
  user-select: none;
  will-change: transform;
}

.floating-chick-node:hover {
  filter: drop-shadow(0 0 20px rgba(245, 158, 11, 0.65)) brightness(1.15);
  z-index: 50;
}

.chick-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: block;
}

.floating-chick-node:hover .chick-img {
  transform: scale(1.18) rotate(6deg);
}

.chick-bubble {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px) scale(0.9);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(245, 158, 11, 0.5);
  color: #f8fafc;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.65), 0 0 14px rgba(245, 158, 11, 0.3);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.chick-bubble::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px;
  border-style: solid;
  border-color: rgba(15, 23, 42, 0.95) transparent transparent transparent;
}

.floating-chick-node:hover .chick-bubble {
  opacity: 1;
  transform: translateX(-50%) translateY(0) scale(1);
}

/* 8 种特色小鸡在屏幕各方位的浮空轨迹分布 */
/* 1. 太空宇航鸡：右上方近地轨道零重力悬浮 */
.chick-astro {
  width: 96px;
  height: 96px;
  top: 10%;
  right: 5%;
  animation: chickZeroG 13s ease-in-out infinite alternate;
}

/* 2. 赛博极速喷气机：左上方巡航飞掠 */
.chick-cyber-fly {
  width: 106px;
  height: 106px;
  top: 16%;
  left: 4%;
  animation: chickJetHover 7.5s ease-in-out infinite alternate;
}

/* 3. 呆萌小黄鸡：右下角欢快跳跃 */
.chick-cute-hop {
  width: 92px;
  height: 92px;
  bottom: 14%;
  right: 12%;
  animation: chickBounceCute 4.6s ease-in-out infinite;
}

/* 4. 墨镜潮玩酷鸡：左中侧自信摇摆 */
.chick-cool-rock {
  width: 96px;
  height: 96px;
  top: 50%;
  left: 3%;
  animation: chickSwagger 6.8s ease-in-out infinite alternate;
}

/* 5. 天使羽翼小鸡：顶部偏中轻盈滑翔 */
.chick-angel-glide {
  width: 92px;
  height: 92px;
  top: 8%;
  left: 33%;
  animation: chickGlide 11.5s ease-in-out infinite alternate;
}

/* 6. 破壳萌萌鸡：左下角探头探脑 */
.chick-eggshell-peek {
  width: 86px;
  height: 86px;
  bottom: 10%;
  left: 8%;
  animation: chickWobble 5.5s ease-in-out infinite alternate;
}

/* 7. 黄金至尊VIP鸡：右侧偏中璀璨闪烁 */
.chick-gold-sparkle {
  width: 94px;
  height: 94px;
  top: 66%;
  right: 3%;
  animation: chickSparkleFloat 8.2s ease-in-out infinite alternate;
}

/* 8. 电竞耳机极客鸡：右侧偏上律动摇摆 */
.chick-gamer-beat {
  width: 90px;
  height: 90px;
  top: 36%;
  right: 18%;
  animation: chickBeatNod 3.6s ease-in-out infinite;
}

/* 8 种小鸡专属 CSS3 动画关键帧 (硬件加速，60fps 流畅运行) */
@keyframes chickZeroG {
  0% { transform: translateY(0) rotate(0deg) scale(1); }
  50% { transform: translateY(-26px) translateX(-14px) rotate(8deg) scale(1.05); }
  100% { transform: translateY(16px) translateX(12px) rotate(-6deg) scale(0.98); }
}

@keyframes chickJetHover {
  0% { transform: translateY(0) translateX(0) rotate(0deg); }
  35% { transform: translateY(-20px) translateX(24px) rotate(4deg); }
  70% { transform: translateY(14px) translateX(-18px) rotate(-3deg); }
  100% { transform: translateY(0) translateX(0) rotate(0deg); }
}

@keyframes chickBounceCute {
  0%, 100% { transform: translateY(0) scale(1, 1); }
  45% { transform: translateY(-22px) scale(0.96, 1.05); }
  50% { transform: translateY(-24px) scale(1.04, 0.98); }
  75% { transform: translateY(0) scale(1.06, 0.92); }
  85% { transform: translateY(-5px) scale(0.98, 1.02); }
}

@keyframes chickSwagger {
  0% { transform: translateY(0) rotate(-4deg); }
  50% { transform: translateY(-16px) rotate(6deg) scale(1.04); }
  100% { transform: translateY(8px) rotate(-4deg); }
}

@keyframes chickGlide {
  0% { transform: translateY(0) translateX(0) rotate(-2deg); }
  50% { transform: translateY(-16px) translateX(40px) rotate(3deg); }
  100% { transform: translateY(6px) translateX(-18px) rotate(-2deg); }
}

@keyframes chickWobble {
  0% { transform: rotate(-5deg) translateY(0); }
  50% { transform: rotate(5deg) translateY(-14px); }
  100% { transform: rotate(-5deg) translateY(0); }
}

@keyframes chickSparkleFloat {
  0% { transform: translateY(0) scale(1); filter: drop-shadow(0 0 6px rgba(245, 158, 11, 0.3)); }
  50% { transform: translateY(-18px) scale(1.06); filter: drop-shadow(0 0 20px rgba(245, 158, 11, 0.7)); }
  100% { transform: translateY(6px) scale(0.98); filter: drop-shadow(0 0 6px rgba(245, 158, 11, 0.3)); }
}

@keyframes chickBeatNod {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-8px) rotate(-3deg); }
  50% { transform: translateY(0) rotate(0deg); }
  75% { transform: translateY(-12px) rotate(3deg); }
}

/* 响应式媒体适配：针对屏幕较小设备做自适应缩放与隐藏 */
@media (max-width: 1024px) {
  .chick-angel-glide, .chick-gamer-beat {
    display: none;
  }
  .floating-chick-node {
    transform: scale(0.85);
  }
}

@media (max-width: 768px) {
  .chick-cool-rock, .chick-gold-sparkle, .chick-eggshell-peek {
    display: none;
  }
  .chick-astro {
    width: 65px;
    height: 65px;
    top: 10%;
    right: 2%;
  }
  .chick-cyber-fly {
    width: 70px;
    height: 70px;
    top: 15%;
    left: 2%;
  }
  .chick-cute-hop {
    width: 65px;
    height: 65px;
    bottom: 6%;
    right: 4%;
  }
  .chick-bubble {
    display: none;
  }
}

/* ==========================================================================
   通用布局容器与排版
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.site-wrapper {
  position: relative;
  z-index: 1;
  pointer-events: none;
}

.site-header, .site-footer, .pricing-card, .feature-card, .client-card, .article-card, .review-card, .faq-details, .btn, a, button, table, .article-content, .hero-cta-group, .hero-stat-card, .external-links-list a, .hero-badge {
  pointer-events: auto;
}

.section {
  padding: 80px 0;
  position: relative;
}

.section-alt {
  background: rgba(15, 23, 42, 0.35);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   按钮组件 (严格遵守 SEO nofollow 与安全规范)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 26px;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  text-align: center;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-gold);
  color: #0f172a;
  box-shadow: 0 4px 18px rgba(245, 158, 11, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(245, 158, 11, 0.55);
  color: #020617;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-cyan {
  background: var(--gradient-cyan);
  color: #04121e;
  box-shadow: 0 4px 18px rgba(56, 189, 248, 0.35);
}

.btn-cyan:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(56, 189, 248, 0.55);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ==========================================================================
   顶部导航栏 (固定吸顶 + 左上方专属 Logo)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(3, 7, 18, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-brand img {
  height: 48px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-gold-light);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-gold);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ==========================================================================
   首屏视觉区 (Hero Section)
   ========================================================================== */
.hero-section {
  padding: 70px 0 60px;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--accent-gold-light);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(34px, 5.5vw, 60px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -1px;
  margin-bottom: 22px;
  color: #ffffff;
}

.hero-highlight {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-desc {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-secondary);
  max-width: 820px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1050px;
  margin: 0 auto;
}

.hero-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.hero-stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.hero-stat-val {
  font-size: 28px;
  font-weight: 900;
  color: var(--accent-gold-light);
  line-height: 1.2;
  margin-bottom: 6px;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==========================================================================
   价格套餐区 (核心要求：所有价格要同排展示！)
   ========================================================================== */
.pricing-section {
  position: relative;
}

/* 保证大屏幕下 4 个价格卡片严格同排 */
.pricing-row-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

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

/* 高亮热门推荐款 */
.pricing-card.featured {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.95) 0%, rgba(20, 25, 45, 0.95) 100%);
  border: 2px solid var(--accent-gold);
  box-shadow: 0 10px 35px rgba(245, 158, 11, 0.25);
  transform: scale(1.02);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-6px);
  box-shadow: 0 16px 45px rgba(245, 158, 11, 0.4);
}

.plan-top-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-gold);
  color: #0f172a;
  font-size: 11.5px;
  font-weight: 900;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
  white-space: nowrap;
}

.plan-tier-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.plan-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.plan-target {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
  min-height: 40px;
}

.pricing-figure {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.price-currency {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent-gold);
}

.price-num {
  font-size: 44px;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.price-cycle {
  font-size: 13.5px;
  color: var(--text-muted);
  font-weight: 600;
}

.pricing-features {
  margin-bottom: 28px;
  flex-grow: 1;
}

.pricing-features li {
  font-size: 13.5px;
  color: #cbd5e1;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.check-icon {
  color: var(--accent-green);
  font-weight: 900;
  flex-shrink: 0;
  font-size: 15px;
}

.pricing-card-footer {
  margin-top: auto;
}

.pricing-tip {
  font-size: 11.5px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 10px;
}

/* ==========================================================================
   产品核心优势与特性解析
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.feature-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   晚高峰实测数据矩阵表格
   ========================================================================== */
.speed-matrix-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 20px;
  font-size: 14px;
}

.speed-matrix-table th {
  background: rgba(30, 41, 59, 0.8);
  color: var(--text-primary);
  font-weight: 700;
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.speed-matrix-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
}

.speed-matrix-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.badge-status-green {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
}

.badge-status-green::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

/* ==========================================================================
   客户端生态网格
   ========================================================================== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
}

.client-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-cyan);
  background: var(--bg-card-hover);
}

.client-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.client-name {
  font-size: 17px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.client-platform {
  font-size: 12px;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 10px;
}

.client-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   精选 SEO 资讯文章列表 (首页展示区)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.article-tag {
  color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.12);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-weight: 700;
}

.article-card-title {
  font-size: 17.5px;
  font-weight: 800;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text-primary);
}

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

.article-excerpt {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-keywords-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.article-kw {
  font-size: 11px;
  background: rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.article-readmore {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--accent-gold-light);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-readmore:hover {
  color: #ffffff;
  gap: 8px;
}

/* ==========================================================================
   真实用户评价板块 (最下方添加用户评价)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 158, 11, 0.35);
  background: var(--bg-card-hover);
}

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

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-gold);
  color: #0f172a;
  font-size: 18px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.review-user-info {
  flex-grow: 1;
}

.review-name {
  font-size: 15px;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.review-badge-verified {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.12);
  padding: 1px 7px;
  border-radius: var(--radius-full);
}

.review-role {
  font-size: 12px;
  color: var(--text-muted);
}

.review-stars {
  color: #facc15;
  font-size: 15px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.review-text {
  font-size: 13.5px;
  color: #cbd5e1;
  line-height: 1.7;
  margin-bottom: 14px;
}

.review-date {
  font-size: 11.5px;
  color: var(--text-muted);
}

/* ==========================================================================
   常见问题解答 FAQ 板块 (原生 HTML details / summary，零外部 JS)
   ========================================================================== */
.faq-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-details {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-details[open] {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.faq-summary {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
  transition: var(--transition);
}

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

.faq-summary:hover {
  color: var(--accent-gold-light);
}

.faq-icon-arrow {
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--accent-gold);
  transition: transform 0.3s ease;
}

.faq-details[open] .faq-icon-arrow {
  transform: rotate(45deg);
}

.faq-content {
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 4px;
  padding-top: 16px;
}

/* ==========================================================================
   权威外部链接条与 PBN 友情链接
   ========================================================================== */
.external-links-bar {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  background: rgba(10, 15, 30, 0.5);
}

.external-links-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  text-align: center;
}

.external-links-list {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.external-links-list a {
  font-size: 13.5px;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
}

.external-links-list a:hover {
  color: var(--accent-gold-light);
  border-color: rgba(245, 158, 11, 0.3);
  background: rgba(255, 255, 255, 0.06);
}

/* ==========================================================================
   页脚区域 (Footer)
   ========================================================================== */
.site-footer {
  background: #020617;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 320px;
}

.footer-title {
  font-size: 15px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 13.5px;
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ==========================================================================
   响应式媒体查询 (@media 确保移动端单栏显示与极佳操作手感)
   ========================================================================== */
@media (max-width: 1100px) {
  .pricing-row-container {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }
  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid, .articles-grid, .reviews-grid, .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none; /* 移动端精简头部，确保秒开与紧凑 */
  }
  .nav-container {
    height: 64px;
  }
  .pricing-row-container {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .hero-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .features-grid, .articles-grid, .reviews-grid, .clients-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .hero-title {
    font-size: 30px;
  }
  .btn {
    width: 100%;
  }
  .hero-cta-group {
    flex-direction: column;
  }
}