/* ========================================================
   寿司云机场官网 (Sushi Cloud) - Vaporwave 赛博朋克极光美学样式表
   官方域名: shousiyunjc.homes
   外部跳转: https://jichangbaike.speedworldaff.cc/#/?code=I2HIRA2q
======================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;700;900&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --bg-deep: #0a0416;
  --bg-dark: #120726;
  --bg-card: rgba(26, 12, 52, 0.72);
  --bg-card-hover: rgba(38, 17, 75, 0.88);
  --bg-glass: rgba(255, 255, 255, 0.04);
  
  --neon-pink: #f72585;
  --neon-pink-glow: rgba(247, 37, 133, 0.45);
  --neon-magenta: #e01a76;
  --neon-purple: #7209b7;
  --neon-violet: #9d4edd;
  --neon-violet-glow: rgba(157, 78, 221, 0.4);
  --neon-cyan: #4cc9f0;
  --neon-cyan-glow: rgba(76, 201, 240, 0.35);
  --neon-green: #06d6a0;

  --text-main: #f8f9fa;
  --text-muted: #c4b5fd;
  --text-dim: #948aa9;
  
  --border-neon: rgba(247, 37, 133, 0.28);
  --border-purple: rgba(157, 78, 221, 0.32);
  --border-cyan: rgba(76, 201, 240, 0.28);

  --gradient-vapor: linear-gradient(135deg, #f72585 0%, #7209b7 50%, #4cc9f0 100%);
  --gradient-btn: linear-gradient(90deg, #f72585, #9d4edd);
  --gradient-btn-hover: linear-gradient(90deg, #ff3b9a, #b366ff);
  --gradient-card: linear-gradient(165deg, rgba(45, 17, 90, 0.55) 0%, rgba(18, 7, 38, 0.75) 100%);
  
  --font-sans: 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --shadow-neon-pink: 0 0 25px rgba(247, 37, 133, 0.38);
  --shadow-neon-purple: 0 0 30px rgba(114, 9, 183, 0.42);
  --shadow-neon-cyan: 0 0 20px rgba(76, 201, 240, 0.32);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 9999px;
  
  --transition-smooth: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 蒸汽波 赛博网格背景 (Inspired by Image 1) */
.vapor-grid-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -2;
  background: 
    linear-gradient(to bottom, rgba(10, 4, 22, 0.85) 0%, rgba(20, 7, 45, 0.65) 60%, rgba(10, 4, 22, 0.95) 100%),
    repeating-linear-gradient(0deg, rgba(157, 78, 221, 0.08) 0px, rgba(157, 78, 221, 0.08) 1px, transparent 1px, transparent 40px),
    repeating-linear-gradient(90deg, rgba(157, 78, 221, 0.08) 0px, rgba(157, 78, 221, 0.08) 1px, transparent 1px, transparent 40px),
    radial-gradient(ellipse at 50% 20%, rgba(114, 9, 183, 0.35) 0%, rgba(247, 37, 133, 0.2) 45%, transparent 75%);
}

/* 动态光斑与透视氛围 */
.vapor-glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: -1;
  opacity: 0.45;
  animation: floatOrb 12s ease-in-out infinite alternate;
}

.orb-pink {
  width: 500px;
  height: 500px;
  background: #f72585;
  top: 5%;
  left: 10%;
}

.orb-purple {
  width: 600px;
  height: 600px;
  background: #7209b7;
  top: 40%;
  right: 5%;
  animation-duration: 16s;
}

.orb-cyan {
  width: 450px;
  height: 450px;
  background: #4cc9f0;
  bottom: 10%;
  left: 20%;
  animation-duration: 14s;
}

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

/* 顶部霓虹通知彩条 */
.top-notice-bar {
  background: linear-gradient(90deg, #f72585, #7209b7, #4cc9f0, #f72585);
  background-size: 300% 100%;
  animation: vaporGrad 8s linear infinite;
  color: #fff;
  text-align: center;
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  box-shadow: 0 2px 12px rgba(247, 37, 133, 0.3);
}

.top-notice-bar a {
  color: #fff;
  text-decoration: underline;
  margin-left: 8px;
  transition: opacity 0.2s;
}
.top-notice-bar a:hover {
  opacity: 0.85;
}

@keyframes vaporGrad {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

/* 容器与通用排版 */
.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: var(--transition-smooth);
}
a:hover {
  color: var(--neon-pink);
}

/* 导航栏 */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 5, 29, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-purple);
  padding: 14px 0;
  transition: var(--transition-smooth);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.5px;
}

.brand-icon {
  font-size: 1.6rem;
  filter: drop-shadow(0 0 8px rgba(247, 37, 133, 0.6));
}

.brand-text {
  background: linear-gradient(135deg, #ffffff 30%, #f72585 80%, #4cc9f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.brand-badge {
  font-size: 0.65rem;
  padding: 2px 8px;
  background: rgba(247, 37, 133, 0.2);
  border: 1px solid var(--neon-pink);
  border-radius: var(--radius-pill);
  color: #ff70a6;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
  transition: var(--transition-smooth);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-btn);
  transition: width 0.25s ease;
  border-radius: 2px;
}

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

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

/* 按钮风格 (Inspired by Figure 1 Vaporwave Enter Button) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: none;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-btn);
  color: #ffffff !important;
  box-shadow: 0 0 20px rgba(247, 37, 133, 0.45);
}

.btn-primary:hover {
  background: var(--gradient-btn-hover);
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(247, 37, 133, 0.7);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-cyan);
  color: #ffffff !important;
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(76, 201, 240, 0.15);
  border-color: var(--neon-cyan);
  transform: translateY(-2px);
  box-shadow: 0 0 22px rgba(76, 201, 240, 0.35);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.88rem;
}

.btn-lg {
  padding: 15px 36px;
  font-size: 1.12rem;
  border-radius: var(--radius-lg);
}

.btn-block {
  width: 100%;
}

/* 呼吸微光与高亮微动画 */
.glow-pulse {
  animation: neonPulse 2.8s infinite alternate;
}

@keyframes neonPulse {
  0% { box-shadow: 0 0 15px rgba(247, 37, 133, 0.35); }
  100% { box-shadow: 0 0 35px rgba(247, 37, 133, 0.75), 0 0 50px rgba(157, 78, 221, 0.4); }
}

/* Hero Section (Vaporwave Card Aesthetic) */
.hero-section {
  padding: 65px 0 60px;
  position: relative;
}

.hero-wrapper {
  text-align: center;
  max-width: 960px;
  margin: 0 auto;
}

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(36, 15, 66, 0.75);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  box-shadow: 0 0 16px rgba(247, 37, 133, 0.2);
}

.status-dot {
  width: 10px;
  height: 10px;
  background: var(--neon-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--neon-green);
  animation: pulseDot 1.8s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.25); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.hero-title {
  font-size: clamp(2.3rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 10%, #f72585 55%, #4cc9f0 95%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 45px;
}

/* 核心 Vaporwave 卡片 (Figure 1 风格) */
.vapor-hero-card {
  background: linear-gradient(160deg, rgba(62, 23, 115, 0.7) 0%, rgba(26, 10, 52, 0.9) 100%);
  border: 1px solid rgba(247, 37, 133, 0.45);
  box-shadow: 0 0 40px rgba(114, 9, 183, 0.5), inset 0 0 20px rgba(247, 37, 133, 0.15);
  border-radius: 24px;
  padding: 36px 30px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
  margin-bottom: 40px;
}

.vapor-hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #f72585, #4cc9f0, transparent);
}

.vapor-card-badge {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 3px;
  color: #ff5da0;
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 700;
}

.vapor-card-sub {
  font-size: 0.95rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-bottom: 22px;
}

.vapor-card-btn {
  display: inline-block;
  padding: 16px 52px;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: var(--gradient-btn);
  color: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: 0 0 35px rgba(247, 37, 133, 0.65);
  transition: var(--transition-smooth);
}

.vapor-card-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 50px rgba(247, 37, 133, 0.9), 0 0 80px rgba(157, 78, 221, 0.6);
  color: #fff;
}

/* 核心卖点标签条 */
.hero-pills-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.feature-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(157, 78, 221, 0.28);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  color: #e2e8f0;
  backdrop-filter: blur(8px);
  transition: var(--transition-smooth);
}

.feature-pill:hover {
  border-color: var(--neon-pink);
  transform: translateY(-2px);
  background: rgba(247, 37, 133, 0.12);
}

/* 通用章节容器 */
.section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--neon-pink);
  background: rgba(247, 37, 133, 0.14);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
  border: 1px solid rgba(247, 37, 133, 0.3);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 14px;
  color: #ffffff;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.68;
}

/* 核心优势网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--neon-pink);
  box-shadow: 0 12px 30px rgba(114, 9, 183, 0.35);
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(247, 37, 133, 0.15);
  border: 1px solid var(--border-neon);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  margin-bottom: 20px;
  box-shadow: 0 0 15px rgba(247, 37, 133, 0.2);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #ffffff;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========================================================
   套餐价格模块 (100% 还原 图2 数据与结构，支持明亮与暗色优雅切换)
======================================================== */
.pricing-section {
  position: relative;
}

.pricing-tabs-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  margin-bottom: 35px;
}

.pricing-badge-save {
  font-size: 0.78rem;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(247, 37, 133, 0.2);
  color: var(--neon-pink);
  border: 1px solid var(--neon-pink);
  font-weight: 700;
}

/* 主套餐三栏网格 */
.pricing-grid-main {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 28px;
}

/* 不限时套餐二栏网格 */
.pricing-grid-onetime {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.pricing-card {
  background: rgba(255, 255, 255, 0.96); /* 图2 还原：白色圆角卡片，文字清晰利落 */
  color: #1a1a2e;
  border-radius: 20px;
  padding: 28px 26px;
  position: relative;
  transition: var(--transition-smooth);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(247, 37, 133, 0.35);
}

.pricing-card.featured {
  border: 2px solid var(--neon-pink);
  box-shadow: 0 12px 36px rgba(247, 37, 133, 0.4);
}

.card-ribbon {
  position: absolute;
  top: 20px;
  right: 22px;
  background: #ff4071;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(255, 64, 113, 0.4);
}

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

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: #1f1b2d;
  margin-bottom: 4px;
}

.plan-traffic {
  font-size: 0.92rem;
  color: #6b7280;
  font-weight: 600;
}

.pricing-price-box {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 16px 0;
  border-top: 1px dashed #e5e7eb;
  border-bottom: 1px dashed #e5e7eb;
  margin-bottom: 18px;
}

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

.price-label {
  font-size: 0.82rem;
  color: #6b7280;
  margin-bottom: 2px;
}

.price-value-pink {
  font-size: 1.85rem;
  font-weight: 900;
  color: #e01a4f;
  font-family: var(--font-mono);
}

.price-value-dark {
  font-size: 1.85rem;
  font-weight: 900;
  color: #1f1b2d;
  font-family: var(--font-mono);
}

.plan-desc {
  font-size: 0.88rem;
  color: #4b5563;
  line-height: 1.55;
  margin-bottom: 20px;
  min-height: 42px;
}

/* 虚线边框的不限时流量包 (图2 下方卡片还原) */
.pricing-card.dashed-style {
  background: rgba(255, 255, 255, 0.98);
  border: 1.5px dashed #f472b6;
}

.onetime-price-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 客户端支持专区 */
.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-lg);
  padding: 26px 20px;
  text-align: center;
  transition: var(--transition-smooth);
}

.client-card:hover {
  transform: translateY(-4px);
  border-color: var(--neon-cyan);
  box-shadow: 0 10px 25px rgba(76, 201, 240, 0.25);
}

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

.client-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: #ffffff;
}

.client-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.client-tags {
  display: flex;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
}

.client-tag {
  font-size: 0.72rem;
  background: rgba(157, 78, 221, 0.2);
  color: #e2e8f0;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid rgba(157, 78, 221, 0.3);
}

/* AI工具与流媒体解锁展示 */
.ai-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.ai-tool-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition-smooth);
}

.ai-tool-card:hover {
  border-color: var(--neon-pink);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(114, 9, 183, 0.35);
}

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

.ai-tool-logo {
  font-size: 2.2rem;
}

.ai-tool-header h3 {
  font-size: 1.25rem;
  color: #ffffff;
}

.ai-tool-badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  background: rgba(6, 214, 160, 0.2);
  color: #06d6a0;
  border: 1px solid rgba(6, 214, 160, 0.4);
  border-radius: var(--radius-pill);
}

.ai-tool-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 实时测速与节点延迟展示器 */
.speed-test-box {
  background: var(--bg-card);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.4);
  margin-bottom: 30px;
}

.node-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.node-table th {
  text-align: left;
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 1px solid rgba(157, 78, 221, 0.3);
}

.node-table td {
  padding: 14px 16px;
  font-size: 0.92rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.node-ping-good {
  color: var(--neon-green);
  font-weight: 700;
  font-family: var(--font-mono);
}

/* FAQ 常见问题手风琴 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
}

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

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

.faq-item.active {
  border-color: var(--neon-pink);
  box-shadow: 0 4px 20px rgba(247, 37, 133, 0.2);
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  user-select: none;
}

.faq-icon {
  font-size: 1.2rem;
  color: var(--neon-pink);
  transition: transform 0.25s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  background: rgba(15, 6, 32, 0.6);
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 16px 24px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* 知识库与9篇文章卡片网格 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.article-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--neon-cyan);
  box-shadow: 0 10px 30px rgba(76, 201, 240, 0.3);
}

.article-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--neon-cyan);
  background: rgba(76, 201, 240, 0.15);
  border: 1px solid rgba(76, 201, 240, 0.3);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
  width: fit-content;
}

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

.article-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 14px;
}

/* 文章详情页专用排版 */
.article-header {
  padding: 60px 0 35px;
  border-bottom: 1px solid var(--border-purple);
  margin-bottom: 40px;
}

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

.breadcrumb a {
  color: var(--text-muted);
}
.breadcrumb a:hover {
  color: var(--neon-pink);
}

.article-title-main {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 800;
  line-height: 1.25;
  color: #ffffff;
  margin-bottom: 20px;
}

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

.article-body {
  max-width: 860px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.85;
  color: #e2e8f0;
}

.article-body h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: #ffffff;
  margin: 45px 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid rgba(247, 37, 133, 0.4);
  position: relative;
}

.article-body h2::before {
  content: '🍣 ';
  font-size: 1.3rem;
}

.article-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--neon-cyan);
  margin: 30px 0 14px;
}

.article-body p {
  margin-bottom: 20px;
  color: #cbd5e1;
}

.article-body ul, .article-body ol {
  margin: 0 0 25px 26px;
  color: #cbd5e1;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body strong {
  color: #ffffff;
  font-weight: 700;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(62, 23, 115, 0.85) 0%, rgba(26, 10, 52, 0.95) 100%);
  border: 2px solid var(--neon-pink);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  text-align: center;
  margin: 45px 0;
  box-shadow: 0 10px 35px rgba(247, 37, 133, 0.35);
}

.article-cta-box h3 {
  font-size: 1.5rem;
  color: #ffffff;
  margin-bottom: 10px;
}

.article-cta-box p {
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 24px;
}

.article-faq-wrap {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 2px solid var(--border-purple);
}

/* 内部文章互相推荐区块 */
.internal-links-box {
  background: var(--bg-card);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 45px 0;
}

.internal-links-box h4 {
  font-size: 1.2rem;
  color: #ffffff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.internal-links-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  list-style: none;
  padding-left: 0 !important;
  margin: 0 !important;
}

.internal-links-list li a {
  display: block;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.internal-links-list li a:hover {
  background: rgba(247, 37, 133, 0.15);
  color: #ffffff;
  transform: translateX(4px);
}

/* 页脚 */
.site-footer {
  background: #090314;
  border-top: 1px solid rgba(157, 78, 221, 0.25);
  padding: 60px 0 30px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.65;
  margin-top: 14px;
  max-width: 360px;
}

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

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 25px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* 浮动进入按钮 (Mobile/Desktop 快捷吸底) */
.floating-cta-bar {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 99;
  display: flex;
  align-items: center;
  gap: 10px;
}

.float-enter-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--gradient-btn);
  color: #fff !important;
  font-weight: 800;
  border-radius: var(--radius-pill);
  box-shadow: 0 0 25px rgba(247, 37, 133, 0.6);
  animation: floatBounce 3s ease-in-out infinite;
}

@keyframes floatBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .pricing-grid-main {
    grid-template-columns: 1fr;
  }
  .pricing-grid-onetime {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero-section {
    padding: 40px 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .floating-cta-bar {
    bottom: 12px;
    right: 12px;
    left: 12px;
  }
  .float-enter-btn {
    width: 100%;
    justify-content: center;
  }
}