/* ==========================================================================
   YIFENJC.WORLD - Nocturne Glassmorphism Design System
   Inspired by Dark Emerald / Mint Aurora Glassmorphic Aesthetic
   ========================================================================== */

:root {
  --bg-primary: #051310;
  --bg-secondary: #081d19;
  --bg-card: rgba(13, 39, 34, 0.65);
  --bg-card-hover: rgba(18, 54, 47, 0.75);
  --bg-card-active: rgba(22, 65, 57, 0.85);
  
  --glass-border: rgba(46, 229, 157, 0.18);
  --glass-border-highlight: rgba(46, 229, 157, 0.45);
  --glass-inner-glow: inset 0 1px 1px 0 rgba(255, 255, 255, 0.12);
  
  --accent-mint: #2ee59d;
  --accent-mint-glow: rgba(46, 229, 157, 0.4);
  --accent-cyan: #38bdf8;
  --accent-cyan-glow: rgba(56, 189, 248, 0.35);
  --accent-purple: #818cf8;
  --accent-purple-glow: rgba(129, 140, 248, 0.35);
  --accent-danger: #f87171;
  --accent-warning: #fbbf24;
  
  --text-primary: #f0fdf4;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-mint: #34d399;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-serif: "Playfair Display", "Songti SC", Georgia, serif;
  --font-mono: "Fira Code", monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-glass: 0 20px 50px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 35px rgba(46, 229, 157, 0.25);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background: radial-gradient(circle at 15% 15%, #0b342c 0%, transparent 45%),
              radial-gradient(circle at 85% 35%, #062822 0%, transparent 50%),
              radial-gradient(circle at 50% 85%, #041a15 0%, transparent 60%),
              var(--bg-primary);
  background-attachment: fixed;
}

/* Background Animated Glows */
.aurora-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.aurora-circle-1 {
  position: absolute;
  top: -100px;
  left: 10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(46, 229, 157, 0.12) 0%, transparent 70%);
  filter: blur(80px);
  animation: floatOrb 18s ease-in-out infinite alternate;
}

.aurora-circle-2 {
  position: absolute;
  top: 40%;
  right: -5%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.08) 0%, transparent 70%);
  filter: blur(90px);
  animation: floatOrb 22s ease-in-out infinite alternate-reverse;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 60px) scale(1.1); }
  100% { transform: translate(-30px, 30px) scale(0.95); }
}

/* Container */
.container {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Glassmorphism Generic Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass), var(--glass-inner-glow);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.glass-card:hover {
  border-color: var(--glass-border-highlight);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glass), 0 0 30px rgba(46, 229, 157, 0.15);
}

/* Header & Navigation Bar */
.navbar-wrapper {
  position: sticky;
  top: 18px;
  z-index: 100;
  width: 100%;
  padding: 0 24px;
  margin-bottom: 24px;
}

.navbar {
  max-width: 1260px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  background: rgba(11, 33, 28, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(46, 229, 157, 0.3) 0%, rgba(56, 189, 248, 0.2) 100%);
  border: 1px solid var(--accent-mint);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-mint);
  box-shadow: 0 0 15px var(--accent-mint-glow);
}

.brand-badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  background: rgba(46, 229, 157, 0.15);
  border: 1px solid rgba(46, 229, 157, 0.4);
  color: var(--accent-mint);
  border-radius: var(--radius-full);
  font-weight: 600;
}

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

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
  padding: 4px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-mint);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-mint);
  border-radius: 2px;
  transition: width var(--transition-fast);
}

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

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

.btn-ghost {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-mint);
  color: #03211a;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  text-decoration: none;
  box-shadow: 0 4px 18px var(--accent-mint-glow);
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(46, 229, 157, 0.55);
  background: #39ecaa;
}

.btn-cyan-gradient {
  background: linear-gradient(135deg, #2ee59d 0%, #38bdf8 100%);
  color: #041d17;
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4);
}

.btn-cyan-gradient:hover {
  box-shadow: 0 8px 30px rgba(46, 229, 157, 0.6);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  backdrop-filter: blur(10px);
  transition: all var(--transition-fast);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-mint);
  color: var(--accent-mint);
  transform: translateY(-2px);
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  padding: 50px 0 90px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(46, 229, 157, 0.08);
  border: 1px solid rgba(46, 229, 157, 0.25);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--accent-mint);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-pill .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-mint);
  box-shadow: 0 0 8px var(--accent-mint);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.4); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.hero-title {
  font-size: 3.4rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-title span.italic-serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent-mint);
  background: linear-gradient(135deg, #2ee59d 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: 34px;
}

.hero-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 34px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
  text-transform: uppercase;
}

.hero-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Radar & Audio Floating Console (图1 style) */
.radar-console {
  position: relative;
  padding: 30px;
  border-radius: 28px;
  background: rgba(10, 31, 26, 0.75);
  border: 1px solid rgba(46, 229, 157, 0.28);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6), inset 0 0 30px rgba(46, 229, 157, 0.05);
}

.radar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(46, 229, 157, 0.12);
  border: 1px solid rgba(46, 229, 157, 0.3);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--accent-mint);
}

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

.codec-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.05);
  padding: 3px 8px;
  border-radius: 6px;
}

/* Radar Visual Area */
.radar-scope-wrapper {
  position: relative;
  width: 100%;
  height: 250px;
  border-radius: 20px;
  background: radial-gradient(circle, rgba(16, 50, 42, 0.8) 0%, rgba(6, 21, 18, 0.95) 100%);
  border: 1px solid rgba(46, 229, 157, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 24px;
}

.radar-grid-rings {
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px solid rgba(46, 229, 157, 0.12);
  box-shadow: 0 0 0 35px rgba(46, 229, 157, 0.06),
              0 0 0 70px rgba(46, 229, 157, 0.04);
}

.radar-sweep-line {
  position: absolute;
  width: 110px;
  height: 110px;
  top: 50%;
  left: 50%;
  transform-origin: 0 0;
  background: conic-gradient(from 0deg, transparent 70%, rgba(46, 229, 157, 0.45) 100%);
  animation: radarSweep 4s linear infinite;
  border-radius: 100% 0 0 0;
  pointer-events: none;
}

@keyframes radarSweep {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.radar-center-blip {
  position: relative;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-mint);
  box-shadow: 0 0 15px var(--accent-mint), 0 0 30px var(--accent-mint);
  z-index: 2;
}

.node-ping-blip {
  position: absolute;
  border-radius: 50%;
  background: var(--accent-mint);
  box-shadow: 0 0 10px var(--accent-mint);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.node-ping-blip:hover {
  transform: scale(1.6);
  background: #fff;
}

.blip-1 { top: 28%; left: 34%; width: 6px; height: 6px; animation: blipGlow 3s infinite; }
.blip-2 { top: 65%; left: 68%; width: 7px; height: 7px; animation: blipGlow 2.5s infinite 1s; }
.blip-3 { top: 72%; left: 25%; width: 5px; height: 5px; animation: blipGlow 3.5s infinite 0.5s; }
.blip-4 { top: 35%; left: 75%; width: 6px; height: 6px; animation: blipGlow 2.8s infinite 1.5s; }

@keyframes blipGlow {
  0%, 100% { opacity: 0.3; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.3); }
}

.radar-node-info {
  margin-bottom: 20px;
}

.radar-node-title {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.45rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.radar-node-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* Soundwave / Ping latency bars */
.waveform-container {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 28px;
  margin-bottom: 20px;
  padding: 0 5px;
}

.wave-bar {
  flex: 1;
  background: rgba(46, 229, 157, 0.25);
  border-radius: 4px;
  height: 6px;
  animation: waveMotion 1.6s ease-in-out infinite alternate;
}

.wave-bar:nth-child(even) { animation-duration: 1.2s; }
.wave-bar:nth-child(3n) { animation-duration: 2s; background: rgba(56, 189, 248, 0.4); }
.wave-bar:nth-child(5n) { animation-duration: 1.4s; }

@keyframes waveMotion {
  0% { height: 4px; }
  50% { height: 26px; background: var(--accent-mint); box-shadow: 0 0 8px var(--accent-mint-glow); }
  100% { height: 8px; }
}

.radar-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.ctrl-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.ctrl-btn:hover {
  color: var(--accent-mint);
}

.ctrl-play-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent-mint);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #042119;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: 0 0 16px var(--accent-mint-glow);
  transition: all var(--transition-fast);
}

.ctrl-play-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 0 25px rgba(46, 229, 157, 0.6);
}

.radar-specs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-top: 18px;
}

/* Live Node Section */
.section {
  padding: 85px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(46, 229, 157, 0.1);
  border: 1px solid rgba(46, 229, 157, 0.25);
  color: var(--accent-mint);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Node Ping Live Grid */
.node-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.node-item {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: var(--radius-md);
  background: rgba(13, 39, 34, 0.5);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-fast);
}

.node-item:hover {
  border-color: var(--accent-mint);
  transform: translateY(-3px);
  background: rgba(18, 54, 47, 0.7);
}

.node-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.node-flag {
  font-size: 1.6rem;
}

.node-name {
  font-weight: 600;
  font-size: 0.98rem;
  margin-bottom: 3px;
}

.node-type {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.node-right {
  text-align: right;
}

.node-latency {
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent-mint);
}

.node-status-text {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Core Advantages Grid */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 26px;
}

.adv-card {
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
}

.adv-icon-box {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: rgba(46, 229, 157, 0.12);
  border: 1px solid rgba(46, 229, 157, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-mint);
  font-size: 1.45rem;
  margin-bottom: 22px;
}

.adv-title {
  font-size: 1.28rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.adv-desc {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   PRICING SECTION (Faithfully matching 图2)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  border-radius: var(--radius-lg);
  background: rgba(9, 28, 24, 0.7);
  border: 1px solid rgba(46, 229, 157, 0.18);
  transition: all var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(46, 229, 157, 0.45);
}

/* Featured 1000G Plan */
.pricing-card.featured {
  background: rgba(12, 38, 32, 0.85);
  border: 2px solid #38bdf8;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 35px rgba(56, 189, 248, 0.3);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-4px);
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.7), 0 0 45px rgba(56, 189, 248, 0.45);
}

.featured-top-badge {
  position: absolute;
  top: -14px;
  right: 28px;
  background: linear-gradient(135deg, #38bdf8 0%, #6366f1 100%);
  color: #fff;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.5);
  letter-spacing: 0.02em;
}

.plan-category {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 14px;
  width: fit-content;
}

.cat-starter {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.cat-recommended {
  background: rgba(129, 140, 248, 0.2);
  color: #a5b4fc;
  border: 1px solid rgba(129, 140, 248, 0.35);
}

.cat-enterprise {
  background: rgba(46, 229, 157, 0.15);
  color: #34d399;
  border: 1px solid rgba(46, 229, 157, 0.3);
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.plan-quota {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.plan-price-wrapper {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 26px;
}

.currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-mint);
}

.price-num {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--accent-mint);
  line-height: 1;
}

.price-cycle {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Pricing Grid of Periods (半年付 / 年付 / 一次性) */
.sub-period-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}

.period-cell {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 10px 12px;
  text-align: center;
}

.period-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.period-val {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
}

.period-cell.full-width {
  grid-column: span 2;
  margin-bottom: 24px;
}

/* Plan Features List */
.plan-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: #cbd5e1;
  margin-bottom: 12px;
  line-height: 1.45;
}

.plan-features li svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: #38bdf8;
  margin-top: 3px;
}

.pricing-card.featured .plan-features li svg {
  color: var(--accent-mint);
}

.plan-btn {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  text-decoration: none;
  transition: all var(--transition-fast);
  display: block;
}

.plan-btn-default {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

.plan-btn-default:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-mint);
  color: var(--accent-mint);
}

.plan-btn-featured {
  background: linear-gradient(135deg, #38bdf8 0%, #6366f1 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.45);
}

.plan-btn-featured:hover {
  box-shadow: 0 6px 28px rgba(56, 189, 248, 0.65);
  transform: translateY(-2px);
}

/* Tutorials / Platform Tabs */
.tutorial-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 22px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-btn:hover,
.tab-btn.active {
  background: var(--accent-mint);
  color: #03211a;
  border-color: var(--accent-mint);
  font-weight: 600;
  box-shadow: 0 0 16px var(--accent-mint-glow);
}

.tutorial-content-card {
  padding: 40px;
  border-radius: var(--radius-lg);
}

.tutorial-step-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 24px;
}

.tutorial-step {
  background: rgba(0, 0, 0, 0.25);
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(46, 229, 157, 0.15);
  color: var(--accent-mint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 14px;
  border: 1px solid var(--accent-mint);
}

.step-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Scam / Runaway Early Warning Section (跑路预警) */
.warning-box {
  border-left: 4px solid var(--accent-warning);
  background: rgba(251, 191, 36, 0.05);
  padding: 24px 28px;
  border-radius: var(--radius-md);
  margin-bottom: 30px;
}

.warning-box h4 {
  color: var(--accent-warning);
  font-size: 1.15rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.warning-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.warning-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: rgba(13, 39, 34, 0.5);
  border: 1px solid rgba(251, 191, 36, 0.2);
}

.warning-card h5 {
  color: var(--accent-warning);
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.warning-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.trust-badge-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 30px;
}

.trust-badge {
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(46, 229, 157, 0.05);
  border: 1px solid rgba(46, 229, 157, 0.2);
  text-align: center;
}

.trust-badge strong {
  display: block;
  color: var(--accent-mint);
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.trust-badge span {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Articles Section Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 26px;
}

.article-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
}

.article-card:hover {
  border-color: var(--accent-mint);
  transform: translateY(-4px);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.tag-badge {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(46, 229, 157, 0.1);
  color: var(--accent-mint);
  border: 1px solid rgba(46, 229, 157, 0.25);
  font-family: var(--font-mono);
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

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

.article-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 14px;
}

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

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

.faq-item {
  border-radius: var(--radius-md);
  background: rgba(13, 39, 34, 0.55);
  border: 1px solid var(--glass-border);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item.active {
  border-color: var(--accent-mint);
  background: rgba(18, 54, 47, 0.7);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  user-select: none;
}

.faq-icon {
  font-size: 1.2rem;
  color: var(--accent-mint);
  transition: transform var(--transition-fast);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease;
  padding: 0 24px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 24px 22px;
}

/* Footer */
.footer {
  background: #020b09;
  border-top: 1px solid rgba(46, 229, 157, 0.15);
  padding: 70px 0 30px;
  position: relative;
  z-index: 10;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-top: 16px;
  max-width: 360px;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

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

.footer-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Article Detail Page Specific Styles */
.article-header {
  padding: 60px 0 30px;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.article-breadcrumbs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.article-breadcrumbs a {
  color: var(--accent-mint);
  text-decoration: none;
}

.article-main-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.article-post-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
}

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

.article-content-body h2 {
  font-size: 1.7rem;
  margin: 45px 0 18px;
  color: var(--text-primary);
  border-bottom: 1px solid rgba(46, 229, 157, 0.2);
  padding-bottom: 10px;
}

.article-content-body h3 {
  font-size: 1.3rem;
  margin: 30px 0 14px;
  color: var(--accent-mint);
}

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

.article-content-body ul,
.article-content-body ol {
  margin-bottom: 22px;
  padding-left: 24px;
}

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

.article-content-body blockquote {
  background: rgba(46, 229, 157, 0.06);
  border-left: 4px solid var(--accent-mint);
  padding: 16px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
  font-style: italic;
  color: #a7f3d0;
}

.article-content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
}

.article-content-body th,
.article-content-body td {
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.92rem;
  text-align: left;
}

.article-content-body th {
  background: rgba(46, 229, 157, 0.12);
  color: var(--accent-mint);
  font-weight: 600;
}

.article-cta-box {
  background: radial-gradient(circle at 50% 50%, rgba(46, 229, 157, 0.15) 0%, rgba(13, 39, 34, 0.8) 100%);
  border: 1px solid var(--accent-mint);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
  margin: 50px 0;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(46, 229, 157, 0.2);
}

.article-cta-box h3 {
  font-size: 1.55rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.article-cta-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto 24px;
}

/* Responsive adjustments */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }
  .tutorial-step-list {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .warning-grid {
    grid-template-columns: 1fr;
  }
  .trust-badge-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.4rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}