/* ========================================================
   Conyss 机场网 (conyss.homes) 官方落地页 原生纯净 CSS
   秒开级别极致性能 / 纯原生 CSS3 / 硬件加速渲染 / 响应式全适配
   ======================================================== */

:root {
  --bg-primary: #040813;
  --bg-secondary: #08142b;
  --bg-card: rgba(11, 23, 46, 0.72);
  --bg-card-hover: rgba(16, 36, 70, 0.88);
  --border-color: rgba(56, 189, 248, 0.22);
  --border-hover: rgba(56, 189, 248, 0.65);
  
  --primary: #06b6d4;
  --primary-glow: #22d3ee;
  --primary-hover: #38bdf8;
  --secondary: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.25);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --shadow-popular: 0 0 35px rgba(6, 182, 212, 0.35);
  
  --container-max: 1260px;
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* ================= 动态背景与氛围光环 ================= */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.dynamic-ambient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.32;
  animation: orbFloat 22s infinite alternate ease-in-out;
}

.orb-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #0284c7 0%, rgba(2, 132, 199, 0) 70%);
  top: -100px;
  left: 10%;
}

.orb-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, #6366f1 0%, rgba(99, 102, 241, 0) 70%);
  top: 35%;
  right: -100px;
  animation-duration: 28s;
  animation-delay: -5s;
}

.orb-3 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #0d9488 0%, rgba(13, 148, 136, 0) 70%);
  bottom: 5%;
  left: 15%;
  animation-duration: 24s;
  animation-delay: -10s;
}

@keyframes orbFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 35px) scale(1.08); }
  100% { transform: translate(-30px, 50px) scale(0.95); }
}

.grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image: 
    linear-gradient(rgba(56, 189, 248, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

/* ================= 通用布局与网格 ================= */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: var(--radius-full);
  color: var(--primary-glow);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 30%, #e0f2fe 70%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto;
}

/* ================= 头部导航栏 ================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(4, 8, 19, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(56, 189, 248, 0.15);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.header-brand:hover {
  transform: translateY(-1px);
}

.brand-avatar-box {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  padding: 2px;
  background: linear-gradient(135deg, #fb7185 0%, #38bdf8 100%);
  box-shadow: 0 0 16px rgba(251, 113, 133, 0.45), 0 0 8px rgba(56, 189, 248, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.brand-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 0.5px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 4px;
}

.brand-highlight {
  color: #38bdf8;
  text-shadow: 0 0 12px rgba(56, 189, 248, 0.6);
}

.brand-sub {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.4px;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
}

.brand-badge {
  display: inline-block;
  padding: 1px 5px;
  font-size: 9px;
  font-weight: 700;
  border-radius: 4px;
  background: rgba(34, 211, 238, 0.15);
  border: 1px solid rgba(34, 211, 238, 0.5);
  color: #22d3ee;
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.header-brand img.brand-full-svg {
  height: 48px;
  width: auto;
  display: block;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 32px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: var(--transition);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ================= 按钮系统 ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #06b6d4 0%, #0284c7 60%, #4f46e5 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(6, 182, 212, 0.6);
  color: #ffffff;
}

.btn-secondary {
  background: rgba(30, 41, 59, 0.7);
  color: #f1f5f9;
  border-color: rgba(56, 189, 248, 0.35);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--primary-glow);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-pbn {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.25) 0%, rgba(139, 92, 246, 0.25) 100%);
  color: #c7d2fe;
  border-color: rgba(168, 85, 247, 0.4);
}

.btn-pbn:hover {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: #ffffff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(139, 92, 246, 0.45);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* ================= HERO 英雄主视觉区 ================= */
.hero-section {
  padding: 170px 0 100px;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.38);
  border-radius: var(--radius-full);
  margin-bottom: 28px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #38bdf8;
  backdrop-filter: blur(10px);
}

.badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 12px #22d3ee;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.35); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: clamp(1.9rem, 3.2vw, 2.85rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
  max-width: 1220px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  column-gap: 8px;
  row-gap: 4px;
}

.hero-title .hero-brand-part {
  display: inline-block;
  white-space: nowrap;
}

.hero-title .hero-dot {
  display: inline-block;
  color: var(--primary);
  opacity: 0.8;
}

.hero-title .hero-kw-part {
  display: inline-block;
  white-space: nowrap;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #38bdf8 0%, #06b6d4 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 820px;
  margin: 0 auto 36px;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
  padding: 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(16px);
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: #38bdf8;
  line-height: 1.2;
}

.stat-num small {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 6px;
  font-weight: 500;
}

/* ================= 核心优势三图文卡片 ================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-8px);
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.feature-icon-wrapper {
  width: 68px;
  height: 68px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 24px;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--primary-glow);
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: #ffffff;
}

.feature-text {
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

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

.feature-pill {
  font-size: 0.78rem;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  color: #38bdf8;
  font-weight: 600;
}

/* ================= 流媒体与 AI 支持图卡 ================= */
.streaming-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

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

.stream-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-glow);
  box-shadow: var(--shadow-glow);
}

.stream-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
  display: inline-block;
}

.stream-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #ffffff;
}

.stream-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.stream-badge {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(52, 211, 153, 0.35);
}

/* ================= 价格套餐对比表 (所有价格同排) ================= */
.pricing-section {
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch; /* 保证卡片同高 */
  margin-bottom: 40px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.pricing-card.popular {
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.15) 0%, rgba(11, 23, 46, 0.9) 100%);
  border-color: #06b6d4;
  box-shadow: var(--shadow-popular);
}

.popular-badge {
  position: absolute;
  top: 16px;
  right: 18px;
  background: linear-gradient(135deg, #06b6d4, #3b82f6);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.plan-header {
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 20px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  min-height: 42px; /* 保证文字多寡时高度对齐 */
}

/* 核心价格区：所有价格同排对齐 */
.plan-price-box {
  margin-bottom: 24px;
  text-align: left;
}

.plan-price {
  font-size: 2.5rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: #38bdf8;
}

.plan-cycle {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
}

.plan-subtext {
  font-size: 0.8rem;
  color: #34d399;
  margin-top: 6px;
  font-weight: 600;
}

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

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.45;
}

.plan-features li .check-icon {
  color: #34d399;
  font-weight: 900;
  flex-shrink: 0;
  margin-top: 2px;
}

.plan-features li strong {
  color: #f1f5f9;
}

/* 不限时备用流量包特惠展示栏 */
.traffic-pack-banner {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.85) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px dashed rgba(56, 189, 248, 0.45);
  border-radius: var(--radius-xl);
  padding: 30px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 30px;
}

.traffic-pack-info {
  display: flex;
  align-items: center;
  gap: 20px;
}

.traffic-icon {
  font-size: 2.8rem;
}

.traffic-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 4px;
}

.traffic-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.traffic-pack-pricing {
  display: flex;
  align-items: center;
  gap: 24px;
}

.traffic-price-tag {
  text-align: right;
}

.traffic-price-val {
  font-size: 1.8rem;
  font-weight: 800;
  color: #38bdf8;
}

/* ================= 8篇SEO文章资讯矩阵 ================= */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}

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

.article-tag {
  display: inline-block;
  align-self: flex-start;
  padding: 4px 10px;
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.article-card-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.45;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 18px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 12px;
}

.read-more-link {
  color: #38bdf8;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ================= 用户评价板块 ================= */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  transition: var(--transition);
}

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

.review-stars {
  color: #fbbf24;
  font-size: 1.1rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.review-content {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 22px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0284c7, #6366f1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #ffffff;
  font-size: 1.1rem;
}

.author-info h4 {
  font-size: 0.98rem;
  font-weight: 700;
  color: #ffffff;
}

.author-info p {
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ================= 常见问题 FAQ 板块 ================= */
.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-question {
  padding: 22px 28px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-toggle-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.1);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #ffffff;
}

.faq-answer {
  padding: 0 28px 24px;
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.7;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ================= 底部品牌 CTA 通栏 ================= */
.cta-banner-section {
  padding: 60px 0;
}

.cta-banner-box {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.25) 0%, rgba(99, 102, 241, 0.25) 100%);
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: var(--radius-xl);
  padding: 60px 50px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.cta-banner-title {
  font-size: 2.4rem;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 16px;
}

.cta-banner-desc {
  font-size: 1.1rem;
  color: #cbd5e1;
  max-width: 680px;
  margin: 0 auto 32px;
}

/* ================= 页脚规范 ================= */
/* 用户明确指示：页脚只保留这四个标题（网站地图、关于我们、服务条款、隐私政策），内容打开新页面展示 */
.site-footer {
  background: #020617;
  border-top: 1px solid rgba(56, 189, 248, 0.15);
  padding: 60px 0 35px;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand-info {
  max-width: 420px;
}

.footer-logo {
  height: 42px;
  width: auto;
  margin-bottom: 14px;
}

.footer-tagline {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.footer-nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
}

.footer-nav-links a:hover {
  color: #38bdf8;
}

.footer-bottom {
  padding-top: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-pbn-area {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-pbn-area a {
  color: #64748b;
  text-decoration: none;
  transition: var(--transition);
}

.footer-pbn-area a:hover {
  color: #94a3b8;
}

/* ================= 移动端媒体查询 (@media) ================= */
@media (max-width: 1100px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .streaming-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }
  .site-header {
    background: rgba(4, 8, 19, 0.95);
  }
  .header-inner {
    height: 64px;
  }
  .nav-menu {
    display: none; /* 移动端精简秒开导航 */
  }
  .hero-section {
    padding: 120px 0 60px;
  }
  .hero-title {
    font-size: 1.85rem;
    line-height: 1.35;
  }
  .hero-desc {
    font-size: 1rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 20px;
  }
  .stat-num {
    font-size: 1.8rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .streaming-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .traffic-pack-banner {
    flex-direction: column;
    text-align: center;
    padding: 24px 20px;
  }
  .traffic-pack-info {
    flex-direction: column;
  }
  .traffic-pack-pricing {
    flex-direction: column;
    gap: 12px;
  }
  .traffic-price-tag {
    text-align: center;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    flex-direction: column;
    text-align: center;
  }
  .footer-nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.45rem;
    line-height: 1.35;
  }
  .hero-title .hero-dot {
    display: none;
  }
  .brand-sub {
    display: none;
  }
  .brand-name {
    font-size: 17px;
  }
  .brand-avatar-box {
    width: 38px;
    height: 38px;
  }
}