/*
 * 瞄准大师 - PUBG Battle Royale 主题样式
 * 绝地求生大逃杀风格：暗黑军事美学 + 战术HUD
 */

/* ====== CSS Variables / Design Tokens ====== */
:root {
  --pubg-bg: #0d0d0d;
  --pubg-bg-light: #161a1e;
  --pubg-surface: #1a1d24;
  --pubg-surface-hover: #22262e;
  --pubg-border: #2a2e38;
  --pubg-border-glow: #3a3f4a;

  --pubg-gold: #f0a500;
  --pubg-gold-dark: #c68600;
  --pubg-amber: #e8a828;
  --pubg-orange: #e67e22;
  --pubg-red: #d63031;
  --pubg-red-dark: #b71c1c;
  --pubg-green: #4caf50;
  --pubg-green-dark: #388e3c;
  --pubg-military: #4a6741;
  --pubg-military-dark: #324b2d;
  --pubg-blue-zone: #2c5aa0;
  --pubg-blue-light: #4a90d9;

  --pubg-text: #d4d6da;
  --pubg-text-muted: #8b8f96;
  --pubg-text-heading: #f0a500;
  --pubg-text-white: #ffffff;

  --pubg-font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --pubg-font-mono: 'Consolas', 'Cascadia Code', monospace;
  --pubg-radius: 4px;
  --pubg-radius-lg: 6px;
  --pubg-shadow: 0 4px 20px rgba(0,0,0,0.5);
  --pubg-glow-gold: 0 0 15px rgba(240,165,0,0.3);
  --pubg-glow-red: 0 0 15px rgba(214,48,49,0.3);
  --pubg-glow-blue: 0 0 15px rgba(44,90,160,0.4);
}

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

body {
  font-family: var(--pubg-font);
  background: var(--pubg-bg);
  color: var(--pubg-text);
  min-height: 100vh;
  line-height: 1.6;
  /* subtle grid pattern overlay */
  background-image:
    linear-gradient(rgba(42,46,56,0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42,46,56,0.15) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* top-edge blue zone glow */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pubg-blue-zone), var(--pubg-blue-light), var(--pubg-blue-zone));
  box-shadow: 0 0 20px rgba(44,90,160,0.5), 0 4px 20px rgba(44,90,160,0.2);
  z-index: 9999;
  animation: bluePulse 3s ease-in-out infinite;
}

@keyframes bluePulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ====== Scrollbar ====== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--pubg-bg); }
::-webkit-scrollbar-thumb { background: var(--pubg-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--pubg-border-glow); }

/* ====== Top Line (Electric Circle Pulse) ====== */
.top-line {
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--pubg-blue), transparent);
  position: relative;
  overflow: hidden;
}

.top-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,0.8), transparent);
  animation: pulseLine 3s ease-in-out infinite;
}

@keyframes pulseLine {
  0% { left: -100%; }
  50% { left: 100%; }
  100% { left: 100%; }
}

/* ====== Navbar ====== */
.navbar {
  background: rgba(13,13,13,0.95);
  backdrop-filter: blur(10px);
  padding: 0.75rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--pubg-border);
  box-shadow: 0 2px 15px rgba(0,0,0,0.5);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-size: 1.4rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--pubg-gold);
  text-shadow: 0 0 10px rgba(240,165,0,0.4);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-name {
  font-weight: 600;
  color: var(--pubg-text);
}

/* ====== Container ====== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* ====== Landing (首页未登录) ====== */
.landing {
  background: var(--pubg-bg);
  background-image:
    linear-gradient(180deg, rgba(44,90,160,0.1) 0%, transparent 50%),
    linear-gradient(rgba(42,46,56,0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42,46,56,0.15) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px, 40px 40px;
}

.hero {
  padding: 80px 20px;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pubg-gold), transparent);
}

.hero h1 {
  font-size: 4.5rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 6px;
  color: var(--pubg-gold);
  text-shadow: 0 0 30px rgba(240,165,0,0.3), 3px 3px 0 rgba(0,0,0,0.5);
  margin-bottom: 20px;
}

.hero h1 span {
  display: block;
  font-size: 1.2rem;
  letter-spacing: 8px;
  color: var(--pubg-text-muted);
  margin-top: 8px;
  text-shadow: none;
}

.hero-tagline {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--pubg-gold);
  text-transform: uppercase;
  letter-spacing: 3px;
  border: 1px solid rgba(240, 165, 0, 0.5);
  border-radius: 4px;
  padding: 6px 18px;
  margin-bottom: 16px;
  background: rgba(240, 165, 0, 0.06);
}

.hero p {
  font-size: 1.3rem;
  color: var(--pubg-text);
  opacity: 0.85;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 40px;
}

.btn-cta {
  padding: 14px 40px;
  font-size: 1.1rem;
  border-radius: var(--pubg-radius);
  text-decoration: none;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  transition: all 0.3s ease;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  position: relative;
}

.btn-cta-primary {
  background: linear-gradient(135deg, var(--pubg-gold) 0%, var(--pubg-orange) 100%);
  color: #1a1a1a;
}

.btn-cta-primary:hover {
  box-shadow: var(--pubg-glow-gold);
  transform: translateY(-3px);
}

.btn-cta-secondary {
  background: transparent;
  color: var(--pubg-gold);
  border: 2px solid var(--pubg-gold);
}

.btn-cta-secondary:hover {
  background: rgba(240,165,0,0.1);
  box-shadow: var(--pubg-glow-gold);
  transform: translateY(-3px);
}

/* ====== Hero Stats Row ====== */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 50px;
  margin-top: 50px;
  padding: 25px 0;
  border-top: 1px solid var(--pubg-border);
}

.hero-stat {
  text-align: center;
  color: var(--pubg-text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-stat span {
  display: block;
  font-size: 2rem;
  font-weight: 900;
  color: var(--pubg-gold);
  text-shadow: 0 0 15px rgba(240,165,0,0.3);
  margin-bottom: 4px;
}

.hero-stat:last-child span {
  font-size: 2.2rem;
}

@media (max-width: 768px) {
  .hero-stats {
    gap: 20px;
    flex-wrap: wrap;
  }
  .hero-stat {
    flex: 1 1 40%;
  }
}

/* ====== Features Section ====== */
.features {
  padding: 80px 20px;
  background: var(--pubg-surface);
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pubg-gold), transparent);
}

.features h2 {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--pubg-text-heading);
  margin-bottom: 50px;
  text-shadow: 0 0 15px rgba(240,165,0,0.2);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  padding: 35px 25px;
  background: var(--pubg-bg-light);
  border: 1px solid var(--pubg-border);
  text-align: center;
  transition: all 0.3s ease;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  position: relative;
}

.feature-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border: 1px solid var(--pubg-gold);
  opacity: 0;
  transition: opacity 0.3s ease;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

.feature-card:hover {
  transform: translateY(-8px);
  background: var(--pubg-surface-hover);
  box-shadow: var(--pubg-glow-gold);
}

.feature-card:hover::after {
  opacity: 0.3;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 18px;
  filter: drop-shadow(0 0 8px rgba(240,165,0,0.3));
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--pubg-gold);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.feature-card p {
  color: var(--pubg-text-muted);
  font-size: 0.95rem;
}

/* ====== Supported Games Section ====== */
.supported-games {
  padding: 80px 20px;
  background: var(--pubg-bg);
  position: relative;
}

.supported-games::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pubg-gold), transparent);
  opacity: 0.3;
}

.supported-games h2 {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--pubg-gold);
  margin-bottom: 50px;
  text-transform: uppercase;
  letter-spacing: 3px;
  text-shadow: 0 0 20px rgba(240, 165, 0, 0.3);
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
  max-width: 1000px;
  margin: 0 auto;
}

.game-card {
  background: var(--pubg-panel);
  border: 1px solid var(--pubg-border);
  border-radius: 12px;
  padding: 30px 20px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.game-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pubg-gold), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.game-card:hover {
  transform: translateY(-5px);
  border-color: var(--pubg-gold);
  box-shadow: 0 10px 30px rgba(240, 165, 0, 0.15);
}

.game-card:hover::before {
  opacity: 1;
}

.game-icon {
  font-size: 3.5rem;
  margin-bottom: 15px;
  filter: drop-shadow(0 0 10px rgba(240, 165, 0, 0.3));
}

.game-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--pubg-text);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.game-status {
  display: inline-block;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.game-status.supported {
  background: rgba(0, 255, 136, 0.15);
  color: var(--pubg-good);
  border: 1px solid rgba(0, 255, 136, 0.3);
}

.game-status.developing {
  background: rgba(251, 191, 36, 0.15);
  color: var(--pubg-mid);
  border: 1px solid rgba(251, 191, 36, 0.3);
}

/* ====== How It Works Section ====== */
.how-it-works {
  padding: 80px 20px;
  background: var(--pubg-bg);
  position: relative;
}

.how-it-works::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pubg-gold), transparent);
  opacity: 0.3;
}

.how-it-works h2 {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--pubg-gold);
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 3px;
  text-shadow: 0 0 20px rgba(240, 165, 0, 0.3);
}

.section-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: var(--pubg-text-muted);
  margin-bottom: 60px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.steps-timeline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.step-card {
  background: var(--pubg-panel);
  border: 1px solid var(--pubg-border);
  border-radius: 16px;
  padding: 35px 25px;
  text-align: center;
  flex: 1;
  min-width: 280px;
  max-width: 350px;
  position: relative;
  transition: all 0.3s ease;
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--pubg-gold), var(--pubg-gold-dark, #d4940a));
  opacity: 0.8;
}

.step-card:hover {
  transform: translateY(-8px);
  border-color: var(--pubg-gold);
  box-shadow: 0 15px 40px rgba(240, 165, 0, 0.2);
}

.step-number {
  position: absolute;
  top: 15px;
  right: 15px;
  width: 32px;
  height: 32px;
  background: var(--pubg-gold);
  color: var(--pubg-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.9rem;
  box-shadow: 0 0 10px rgba(240, 165, 0, 0.4);
}

.step-icon {
  font-size: 3.5rem;
  margin-bottom: 18px;
  filter: drop-shadow(0 0 10px rgba(240, 165, 0, 0.3));
}

.step-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--pubg-gold);
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.step-card p {
  color: var(--pubg-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.step-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  min-width: 60px;
}

.connector-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(180deg, var(--pubg-gold), transparent);
  opacity: 0.5;
}

.connector-arrow {
  color: var(--pubg-gold);
  font-size: 1.2rem;
  opacity: 0.7;
  animation: arrowPulse 2s ease-in-out infinite;
}

@keyframes arrowPulse {
  0%, 100% { opacity: 0.7; transform: translateX(0); }
  50% { opacity: 1; transform: translateX(3px); }
}

/* ====== Pricing Section ====== */
.pricing {
  padding: 80px 20px;
  background: var(--pubg-bg);
  position: relative;
}

.pricing h2 {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--pubg-text-heading);
  margin-bottom: 50px;
  text-shadow: 0 0 15px rgba(240,165,0,0.2);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-card {
  padding: 45px 35px;
  background: var(--pubg-surface);
  border: 1px solid var(--pubg-border);
  text-align: center;
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: -1px; left: -1px; right: -1px; bottom: -1px;
  background: linear-gradient(135deg, var(--pubg-gold), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.pricing-card.featured::before {
  opacity: 0.15;
}

.pricing-card.featured {
  border-color: var(--pubg-gold);
  box-shadow: var(--pubg-glow-gold);
}

.pricing-card.featured::after {
  content: 'HOT';
  position: absolute;
  top: 18px;
  right: -45px;
  background: var(--pubg-gold);
  color: #1a1a1a;
  padding: 6px 55px;
  transform: rotate(45deg);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 2px;
  z-index: 1;
}

.pricing-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--pubg-glow-gold);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-10px);
}

.pricing-card > * { position: relative; z-index: 1; }

.pricing-card h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--pubg-text);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 20px;
}

.price {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--pubg-gold);
  margin: 20px 0;
  text-shadow: 0 0 15px rgba(240,165,0,0.3);
}

.price-period {
  font-size: 1rem;
  color: var(--pubg-text-muted);
  font-weight: 400;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 30px 0;
  text-align: left;
}

.pricing-features li {
  padding: 12px 0;
  border-bottom: 1px solid var(--pubg-border);
  color: var(--pubg-text-muted);
  font-size: 0.95rem;
}

.pricing-features li::before {
  content: '✦ ';
  color: var(--pubg-gold);
  font-weight: bold;
}

.pricing-card .btn {
  margin-top: 15px;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  width: 100%;
  padding: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* ====== Footer ====== */
.footer {
  padding: 40px 20px;
  background: var(--pubg-bg-light);
  border-top: 1px solid var(--pubg-border);
  text-align: center;
  color: var(--pubg-text-muted);
  font-size: 0.9rem;
}

/* ====== Form Box (login, register, redeem, change password) ====== */
.form-box {
  background: var(--pubg-surface);
  border: 1px solid var(--pubg-border);
  padding: 2.5rem;
  max-width: 500px;
  margin: 5rem auto;
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
  box-shadow: var(--pubg-shadow);
  position: relative;
}

.form-box::before {
  content: '';
  position: absolute;
  top: -1px; left: -1px; right: -1px; bottom: -1px;
  background: linear-gradient(135deg, var(--pubg-gold), transparent 50%);
  opacity: 0.08;
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
  z-index: 0;
}

.form-box > * {
  position: relative;
  z-index: 1;
}

.form-box h1 {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--pubg-gold);
  font-size: 1.6rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 3px;
  text-shadow: 0 0 10px rgba(240,165,0,0.2);
}

/* Form Group */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--pubg-text);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.85rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--pubg-bg-light);
  border: 1px solid var(--pubg-border);
  color: var(--pubg-text-white);
  font-size: 1rem;
  font-family: var(--pubg-font);
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--pubg-gold);
  box-shadow: 0 0 10px rgba(240,165,0,0.15);
  background: var(--pubg-bg);
}

.form-group small {
  display: block;
  margin-top: 0.35rem;
  color: var(--pubg-text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ====== Buttons ====== */
.btn {
  padding: 0.8rem 1.5rem;
  border: none;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  font-family: var(--pubg-font);
  font-weight: 700;
  letter-spacing: 1px;
  transition: all 0.3s ease;
  color: #1a1a1a;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  text-transform: uppercase;
}

.btn-primary {
  background: linear-gradient(135deg, var(--pubg-gold) 0%, var(--pubg-orange) 100%);
  width: 100%;
}

.btn-primary:hover {
  box-shadow: var(--pubg-glow-gold);
  transform: translateY(-2px);
}

.btn-vip {
  background: linear-gradient(135deg, var(--pubg-gold) 0%, var(--pubg-orange) 100%);
  color: #1a1a1a;
}

.btn-vip:hover {
  box-shadow: var(--pubg-glow-gold);
  transform: translateY(-2px);
}

/* ====== Buy Button ====== */
.btn-buy {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  border: none;
}
.btn-buy:hover {
  box-shadow: 0 0 12px rgba(102,126,234,0.5);
  transform: translateY(-2px);
}

/* ====== Navbar Buttons ====== */
.nav-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-user .btn {
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: 6px;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 登录按钮 - 金色边框轮廓 */
.nav-user .btn-login {
  background: transparent;
  color: var(--pubg-gold);
  border: 1px solid rgba(240, 165, 0, 0.5);
}

.nav-user .btn-login:hover {
  background: rgba(240, 165, 0, 0.1);
  border-color: var(--pubg-gold);
  box-shadow: 0 0 15px rgba(240, 165, 0, 0.2);
  transform: translateY(-2px);
}

/* 注册按钮 - 金色实心 */
.nav-user .btn-register {
  background: linear-gradient(135deg, var(--pubg-gold) 0%, var(--pubg-orange) 100%);
  color: #1a1a1a;
  border: 1px solid transparent;
  font-weight: 700;
}

.nav-user .btn-register:hover {
  box-shadow: 0 0 20px rgba(240, 165, 0, 0.4);
  transform: translateY(-2px);
}

/* 退出按钮 */
.nav-user .btn-logout {
  background: rgba(255, 68, 102, 0.1);
  color: var(--pubg-red);
  border: 1px solid rgba(255, 68, 102, 0.3);
}

.nav-user .btn-logout:hover {
  background: rgba(255, 68, 102, 0.2);
  box-shadow: 0 0 15px rgba(255, 68, 102, 0.2);
}

/* 管理后台按钮 */
.nav-user .btn-admin {
  background: rgba(0, 212, 255, 0.1);
  color: var(--pubg-blue);
  border: 1px solid rgba(0, 212, 255, 0.3);
}

.nav-user .btn-admin:hover {
  background: rgba(0, 212, 255, 0.2);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

/* 返回首页按钮 */
.nav-user .btn-blog {
  background: transparent;
  color: var(--pubg-blue-light, #4a90d9);
  border: 1px solid rgba(74, 144, 217, 0.3);
  font-weight: 700;
  font-size: 0.85rem;
}

.nav-user .btn-blog:hover {
  background: rgba(74, 144, 217, 0.1);
  border-color: var(--pubg-blue-light, #4a90d9);
}

.nav-user .btn-back {
  background: transparent;
  color: var(--pubg-text-muted);
  border: 1px solid var(--pubg-border);
}

.nav-user .btn-back:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--pubg-text);
  border-color: var(--pubg-text-muted);
}

/* ====== General Buttons ====== */
.btn-secondary {
  background: var(--pubg-border);
  color: var(--pubg-text);
}

.btn-secondary:hover {
  background: var(--pubg-border-glow);
  transform: translateY(-2px);
}

.btn-logout {
  background: var(--pubg-red);
  color: white;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-logout:hover {
  background: var(--pubg-red-dark);
  box-shadow: var(--pubg-glow-red);
}

.btn-back {
  background: var(--pubg-border);
  color: var(--pubg-text);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-admin {
  background: var(--pubg-blue-zone);
  color: white;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-admin:hover {
  box-shadow: var(--pubg-glow-blue);
}

.btn-small {
  padding: 0.3rem 0.8rem;
  font-size: 0.8rem;
  background: var(--pubg-gold);
  color: #1a1a1a;
  margin-left: 0.5rem;
  border-radius: 3px;
}

.btn-large {
  width: 100%;
  margin-top: 1rem;
}

/* ====== Alerts ====== */
.alert {
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
  border-left: 4px solid;
  position: relative;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.alert-error {
  background: rgba(214,48,49,0.12);
  color: #f4877f;
  border-left-color: var(--pubg-red);
}

.alert-success {
  background: rgba(76,175,80,0.12);
  color: #81c784;
  border-left-color: var(--pubg-green);
}

.alert-info {
  background: rgba(44,90,160,0.12);
  color: #64b5f6;
  border-left-color: var(--pubg-blue-zone);
}

/* ====== Dashboard ====== */
.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: var(--pubg-surface);
  border: 1px solid var(--pubg-border);
  padding: 1.8rem;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  box-shadow: var(--pubg-shadow);
  transition: border-color 0.3s ease;
}

.card:hover {
  border-color: var(--pubg-border-glow);
}

.card-full {
  grid-column: 1 / -1;
}

.card h2 {
  color: var(--pubg-gold);
  font-size: 1.1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1.3rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--pubg-border);
  position: relative;
}

.card h2::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 50px;
  height: 2px;
  background: var(--pubg-gold);
}

/* ====== Info Table ====== */
.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table td {
  padding: 0.8rem 0.5rem;
  border-bottom: 1px solid var(--pubg-border);
}

.info-table td:first-child {
  font-weight: 600;
  color: var(--pubg-text-muted);
  width: 110px;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.info-table th {
  padding: 0.6rem 0.5rem;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--pubg-text-muted);
  border-bottom: 1px solid var(--pubg-border);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* 设备表格覆盖：非 key-value 结构的表格不要固定首列宽度 */
.info-table.device-table td:first-child {
  width: auto;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
}
.info-table.device-table td {
  word-break: break-all;
  max-width: 200px;
}

/* ====== Badges ====== */
.badge {
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
}

.badge-vip {
  background: linear-gradient(135deg, var(--pubg-gold) 0%, var(--pubg-orange) 100%);
  color: #1a1a1a;
}

.badge-normal {
  background: var(--pubg-border);
  color: var(--pubg-text-muted);
}

.badge-admin {
  background: var(--pubg-blue-zone);
  color: white;
}

.badge-used {
  background: var(--pubg-red);
  color: white;
}

.badge-unused {
  background: var(--pubg-green-dark);
  color: white;
}

.badge-success {
  background: #1b5e20;
  color: #a5d6a7;
}

.badge-warning {
  background: #4a3800;
  color: #ffd54f;
}

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

.btn-danger {
  background: var(--pubg-red);
  color: white;
  border: none;
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
}
.btn-danger:hover {
  background: #c0392b;
}

.btn-small {
  padding: 0.3rem 0.8rem;
  font-size: 0.8rem;
}

/* ====== Stat Box ====== */
.stat-box {
  background: var(--pubg-bg-light);
  border: 1px solid var(--pubg-border);
  padding: 1.3rem;
  margin-bottom: 1rem;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}

.stat-box.vip {
  background: linear-gradient(135deg, rgba(240,165,0,0.15), rgba(230,126,34,0.08));
  border-color: var(--pubg-gold);
}

.stat-box h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--pubg-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.stat-box p {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--pubg-text-white);
}

.stat-box .remaining {
  font-size: 1rem;
  color: var(--pubg-gold);
  font-weight: 600;
}

.stat-box .big-number {
  font-size: 3rem;
  text-align: center;
  color: var(--pubg-gold);
  text-shadow: 0 0 15px rgba(240,165,0,0.3);
}

/* ====== Progress Bar ====== */
.progress-bar {
  width: 100%;
  height: 18px;
  background: var(--pubg-bg);
  border: 1px solid var(--pubg-border);
  overflow: hidden;
  margin: 0.5rem 0;
  clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
}

.progress-bar .progress {
  height: 100%;
  background: linear-gradient(90deg, var(--pubg-gold-dark), var(--pubg-gold), var(--pubg-amber));
  transition: width 0.5s ease;
  position: relative;
}

.progress-bar .progress::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  animation: progressShine 2s ease-in-out infinite;
}

@keyframes progressShine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ====== VIP Info Box ====== */
.vip-info {
  background: var(--pubg-bg-light);
  border: 1px solid var(--pubg-border);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.vip-info h2 {
  color: var(--pubg-gold);
  font-size: 1.2rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1rem;
}

.vip-info ul {
  list-style: none;
  padding-left: 0;
}

.vip-info li {
  padding: 0.5rem 0;
  font-size: 1rem;
  color: var(--pubg-text);
}

/* ====== Action Buttons ====== */
.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.action-buttons .btn {
  text-align: center;
}

.download-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.download-actions .btn {
  width: 100%;
}

/* ====== Form Footer ====== */
.form-footer {
  text-align: center;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--pubg-border);
}

.form-footer p {
  color: var(--pubg-text-muted);
}

.form-footer a {
  color: var(--pubg-gold);
  text-decoration: none;
  font-weight: 600;
  transition: text-shadow 0.3s;
}

.form-footer a:hover {
  text-shadow: 0 0 10px rgba(240,165,0,0.5);
}

/* ====== Data Table ====== */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  background: var(--pubg-bg-light);
  padding: 12px;
  text-align: left;
  font-weight: 700;
  color: var(--pubg-gold);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.85rem;
  border-bottom: 2px solid var(--pubg-border);
}

.data-table td {
  padding: 12px;
  border-bottom: 1px solid var(--pubg-border);
  color: var(--pubg-text);
}

.data-table tr:hover td {
  background: rgba(240,165,0,0.04);
}

/* ====== Modal ====== */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
}

.modal-content {
  background: var(--pubg-surface);
  border: 1px solid var(--pubg-border);
  padding: 2rem;
  max-width: 500px;
  margin: 100px auto;
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
  box-shadow: var(--pubg-shadow), 0 0 30px rgba(0,0,0,0.5);
}

.modal-content h2 {
  color: var(--pubg-gold);
  font-size: 1.3rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1.5rem;
}

/* ====== Code Text ====== */
.code-text {
  font-family: var(--pubg-font-mono);
  background: var(--pubg-bg);
  padding: 4px 10px;
  border: 1px solid var(--pubg-border);
  color: var(--pubg-gold);
  letter-spacing: 1px;
}

/* ====== Pagination ====== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

.pagination a {
  padding: 8px 14px;
  background: var(--pubg-bg-light);
  border: 1px solid var(--pubg-border);
  color: var(--pubg-text);
  text-decoration: none;
  font-weight: 600;
  clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
  transition: all 0.3s;
}

.pagination a:hover {
  border-color: var(--pubg-gold);
  color: var(--pubg-gold);
}

.pagination a.active {
  background: var(--pubg-gold);
  color: #1a1a1a;
  border-color: var(--pubg-gold);
}

/* ====== Responsive ====== */
@media (max-width: 768px) {
  .navbar {
    padding: 1rem;
    flex-direction: column;
    gap: 0.8rem;
  }

  .hero h1 {
    font-size: 2.5rem;
    letter-spacing: 3px;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .container {
    padding: 1rem;
  }

  .form-box {
    margin: 2rem 1rem;
    padding: 1.5rem;
  }

  .dashboard {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: none;
  }

  .supported-games h2 {
    font-size: 1.8rem;
  }

  .games-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .game-card {
    padding: 20px 15px;
  }

  .game-icon {
    font-size: 2.5rem;
  }

  .how-it-works h2 {
    font-size: 1.8rem;
  }

  .section-subtitle {
    font-size: 1rem;
    margin-bottom: 40px;
    padding: 0 15px;
  }

  .steps-timeline {
    flex-direction: column;
    align-items: center;
    gap: 15px;
  }

  .step-card {
    max-width: 100%;
    min-width: auto;
    padding: 25px 20px;
  }

  .step-connector {
    flex-direction: row;
    min-width: auto;
    gap: 5px;
    transform: rotate(90deg);
    margin: 5px 0;
  }

  .connector-line {
    width: 40px;
    height: 2px;
  }

  .step-number {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
    top: 12px;
    right: 12px;
  }
}