/* =========================================================================
   zszzz.css —— 基于 yangben02.html 的 Minecraft 像素风深色主题
   主色：草绿 #7ed957 / 金 #ffd23d / 钻石蓝 #4dd0e1 / 红石红 #ff5252
   字体：Press Start 2P (display) / Space Grotesk (body)
   兼容旧页面（聊天室/公告/赞助）所需类
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root {
  --bg-deep: #060a07;
  --bg-primary: #0a0f0a;
  --bg-secondary: #11181a;
  --bg-tertiary: #1a2421;
  --bg-card: rgba(20, 30, 25, 0.6);
  --bg-card-2: rgba(20, 30, 25, 0.85);

  --mc-grass: #7ed957;
  --mc-grass-dark: #5fb84e;
  --mc-grass-light: #9aec7a;
  --mc-dirt: #8b6f47;
  --mc-dirt-dark: #6b4f2a;
  --mc-diamond: #4dd0e1;
  --mc-diamond-dark: #00acc1;
  --mc-diamond-light: #80deea;
  --mc-gold: #ffd23f;
  --mc-gold-dark: #d49500;
  --mc-gold-light: #ffe066;
  --mc-redstone: #ff5252;
  --mc-redstone-dark: #c62828;
  --mc-emerald: #50c878;
  --mc-lapis: #3a5ec0;

  --text-primary: #e8f5e0;
  --text-secondary: #9bb39b;
  --text-muted: #5a6e5a;

  --accent: #7ed957;
  --accent-glow: rgba(126, 217, 87, 0.5);
  --accent-2: #ffd23f;
  --accent-2-glow: rgba(255, 210, 63, 0.5);
  --accent-3: #4dd0e1;
  --accent-3-glow: rgba(77, 208, 225, 0.5);

  --gold: #ffd23f;
  --gold-glow: rgba(255, 210, 63, 0.5);
  --danger: #ff5252;
  --success: #7ed957;
  --warning: #ffd23f;

  --border: rgba(126, 217, 87, 0.15);
  --border-bright: rgba(126, 217, 87, 0.4);
  --border-strong: rgba(126, 217, 87, 0.4);

  /* 旧代码别名（请勿删除，向后兼容聊天室/公告页用的 var(--bg) 等） */
  --bg: var(--bg-primary);
  --bg-2: var(--bg-secondary);
  --bg-3: var(--bg-tertiary);
  --fg: var(--text-primary);
  --muted: var(--text-secondary);
  --card: var(--bg-card);
  --card-hover: rgba(30, 45, 38, 0.7);
  --shadow-3d: 0 4px 0 #1a1a1a, 0 8px 20px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Space Grotesk', 'Microsoft YaHei', system-ui, sans-serif;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-shadow: 0 0 8px var(--accent-glow); }
.pixel { font-family: 'Press Start 2P', monospace; letter-spacing: 0.05em; line-height: 1.4; }
.font-display { font-family: 'Press Start 2P', 'Chakra Petch', monospace; letter-spacing: 0.04em; }

/* ===== 背景层 ===== */
.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(126, 217, 87, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 217, 87, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  pointer-events: none; z-index: 0;
}
.bg-noise {
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.85' numOctaves='4'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.05; pointer-events: none; z-index: 100; mix-blend-mode: overlay;
}
.bg-glow {
  position: fixed; border-radius: 50%;
  filter: blur(140px); pointer-events: none; z-index: 0;
}
.bg-glow-1 { width: 700px; height: 700px; background: var(--mc-grass); opacity: 0.13; top: -250px; left: -200px; animation: float 22s ease-in-out infinite; }
.bg-glow-2 { width: 600px; height: 600px; background: var(--mc-gold); opacity: 0.10; top: 30%; right: -200px; animation: float 18s ease-in-out -10s infinite; }
.bg-glow-3 { width: 500px; height: 500px; background: var(--mc-diamond); opacity: 0.08; bottom: -150px; left: 30%; animation: float 25s ease-in-out -5s infinite; }
@keyframes float {
  0%, 100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(80px, -50px) scale(1.1); }
  66% { transform: translate(-50px, 80px) scale(0.9); }
}

.particles { position: fixed; inset: 0; pointer-events: none; z-index: 1; overflow: hidden; }
.particle { position: absolute; width: 4px; height: 4px; border-radius: 50%; animation: rise linear infinite; }
@keyframes rise {
  0% { transform: translateY(110vh) translateX(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-10vh) translateX(60px); opacity: 0; }
}

.content { position: relative; z-index: 5; max-width: 1300px; margin: 0 auto; padding: 0 5%; }

/* ===== 导航 ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  padding: 18px 5%;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(10, 15, 10, 0.7);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}
.nav.scrolled { padding: 12px 5%; background: rgba(10, 15, 10, 0.92); }
.nav-inner { width: 100%; max-width: 1300px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

.logo-3d {
  display: inline-flex; align-items: center; gap: 14px;
  text-decoration: none; color: var(--text-primary);
}
.logo-mark {
  width: 38px; height: 38px; position: relative;
  background: var(--mc-grass);
  border: 2px solid #000;
  box-shadow:
    inset 0 4px 0 rgba(255,255,255,0.25),
    inset 0 -4px 0 rgba(0,0,0,0.3),
    0 3px 0 #1a1a1a,
    0 5px 8px rgba(0,0,0,0.4);
  display: flex; align-items: center; justify-content: center;
  color: #0a0f0a; font-size: 18px;
}
.logo-mark::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,0,0,0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.2) 1px, transparent 1px);
  background-size: 8px 8px;
}
.logo-text {
  font-family: 'Press Start 2P', monospace;
  font-size: 13px; letter-spacing: 0.05em;
}
.logo-text span { color: var(--mc-grass); }
.logo-3d:hover { text-shadow: none; }

.nav-links { display: flex; gap: 8px; list-style: none; flex-wrap: wrap; }
.nav-link {
  color: var(--text-secondary); text-decoration: none;
  font-size: 14px; font-weight: 500; position: relative;
  padding: 8px 14px; cursor: pointer; transition: color 0.2s;
  display: inline-flex; align-items: center; gap: 6px;
}
.nav-link:hover { color: var(--accent); }
.nav-link::after {
  content: ''; position: absolute; bottom: 2px; left: 14px; right: 14px;
  height: 2px; background: var(--accent); width: auto;
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s; box-shadow: 0 0 8px var(--accent-glow);
}
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-link.active { color: var(--accent); }

.nav-right { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.nav-status { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-secondary); }
.nav-status strong { color: var(--accent); font-weight: 700; }
.status-dot {
  width: 10px; height: 10px; border-radius: 50%; display: inline-block;
}
.status-dot.online, .status-dot { background: var(--mc-grass); box-shadow: 0 0 12px var(--mc-grass); animation: pulse 2s ease-in-out infinite; }
.status-dot.offline { background: var(--mc-redstone); box-shadow: 0 0 12px var(--mc-redstone); animation: none; }
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}
.icon-btn {
  background: transparent; border: 1px solid var(--border); color: var(--text-secondary);
  width: 38px; height: 38px; cursor: pointer; font-size: 16px;
  display: flex; align-items: center; justify-content: center; transition: all 0.2s;
}
.icon-btn:hover { color: var(--accent); border-color: var(--border-bright); }

/* ===== 像素 3D 按钮 ===== */
.btn-3d, .btn-pixel {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--mc-grass); color: #0a0f0a;
  border: 2px solid #000;
  padding: 12px 22px;
  font-family: 'Press Start 2P', 'Chakra Petch', monospace;
  font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase;
  cursor: pointer; text-decoration: none; user-select: none;
  box-shadow:
    inset 0 3px 0 rgba(255,255,255,0.3),
    inset 0 -3px 0 rgba(0,0,0,0.2),
    0 4px 0 #1a1a1a,
    0 6px 12px rgba(0,0,0,0.4);
  transition: all 0.15s;
}
.btn-3d:hover, .btn-pixel:hover {
  transform: translateY(2px);
  box-shadow:
    inset 0 3px 0 rgba(255,255,255,0.3),
    inset 0 -3px 0 rgba(0,0,0,0.2),
    0 2px 0 #1a1a1a,
    0 4px 8px rgba(0,0,0,0.4);
}
.btn-3d:active, .btn-pixel:active {
  transform: translateY(4px);
  box-shadow:
    inset 0 3px 0 rgba(255,255,255,0.3),
    inset 0 -3px 0 rgba(0,0,0,0.2),
    0 0 0 #1a1a1a;
}
.btn-3d:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-3d.btn-warning { background: var(--mc-gold); }
.btn-3d.btn-warning:hover { background: var(--mc-gold-light); }
.btn-3d.btn-danger { background: var(--mc-redstone); }
.btn-3d.btn-ghost {
  background: rgba(126, 217, 87, 0.1); color: var(--accent);
  box-shadow: 0 0 0 1px var(--border-bright) inset;
}
.btn-3d.btn-ghost:hover {
  background: rgba(126, 217, 87, 0.18);
  transform: translateY(0);
  box-shadow: 0 0 0 1px var(--accent) inset, 0 0 12px var(--accent-glow);
}
.btn-block { width: 100%; }

/* ===== 卡片 ===== */
.card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  padding: 28px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  position: relative; overflow: hidden;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s, background 0.3s;
  animation: cardIn 0.5s cubic-bezier(0.2,0.9,0.4,1.1) both;
}
.card:hover {
  border-color: var(--border-bright);
  background: var(--bg-card-2);
  box-shadow: 0 12px 30px rgba(0,0,0,0.4);
}
@keyframes cardIn { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.card-title {
  font-family: 'Press Start 2P', 'Chakra Petch', monospace;
  font-size: 14px; color: var(--text-primary);
  display: flex; align-items: center; gap: 10px; margin-bottom: 16px;
  letter-spacing: 0.04em;
}
.card-title::before {
  content: ''; width: 6px; height: 18px;
  background: var(--accent); border: 1px solid #000;
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ===== Hero 标题 ===== */
.hero-title {
  font-family: 'Press Start 2P', monospace;
  font-size: clamp(36px, 8vw, 96px);
  line-height: 1.1; letter-spacing: 0.02em;
  text-shadow: 0 4px 0 rgba(0,0,0,0.4), 0 8px 30px rgba(126, 217, 87, 0.4);
}
.hero-title .accent,
.title-accent {
  color: var(--mc-grass);
  text-shadow: 0 4px 0 rgba(0,0,0,0.4), 0 0 30px var(--accent-glow), 0 0 60px var(--accent-glow);
}
.hero-sub {
  font-size: clamp(15px, 1.5vw, 19px);
  color: var(--text-secondary);
  max-width: 680px; margin: 16px auto 0; line-height: 1.7;
}

/* ===== 浮动 3D 方块（修复错位） ===== */
.floating-cubes {
  position: absolute; inset: 0;
  perspective: 1500px; z-index: 1; pointer-events: none;
}
.cube-wrap {
  position: absolute; top: 50%; left: 50%;
  width: 0; height: 0;             /* 让 cube 自身做位移的中心 */
  transition: transform 0.2s ease-out;
  will-change: transform;
}
.cube {
  position: relative; width: 100px; height: 100px;
  transform-style: preserve-3d;
  animation: floatCube 8s ease-in-out infinite;
  animation-delay: var(--d, 0s);
  /* 关键修复：cube 以自身中心做位移，避免与 face 的 translateZ 叠加产生错位 */
  transform-origin: 50% 50% 0;
}
@keyframes floatCube {
  0%, 100% { transform: translate(-50%, -50%) rotateX(-20deg) rotateY(-30deg) translateY(0); }
  50%      { transform: translate(-50%, -50%) rotateX(-15deg) rotateY(-25deg) translateY(-30px); }
}
.face {
  position: absolute;
  width: 100px; height: 100px;
  top: 0; left: 0;
  border: 2px solid rgba(0,0,0,0.4);
  box-sizing: border-box; overflow: hidden;
  backface-visibility: hidden;
}
.face-front  { transform: translateZ(50px); }
.face-back   { transform: translateZ(-50px) rotateY(180deg); }
.face-right  { transform: rotateY(90deg) translateZ(50px); }
.face-left   { transform: rotateY(-90deg) translateZ(50px); }
.face-top    { transform: rotateX(90deg) translateZ(50px); }
.face-bottom { transform: rotateX(-90deg) translateZ(50px); }

/* 顶部统计方块阵列（修复同样错位） */
.cube-array {
  position: relative; height: 500px;
  perspective: 1200px;
  display: flex; align-items: center; justify-content: center;
}
.cube-stack {
  position: relative; width: 100px; height: 100px;
  transform-style: preserve-3d;
  animation: stackRotate 25s linear infinite;
  transform-origin: 50% 50% 0;
}
@keyframes stackRotate {
  from { transform: rotateX(-25deg) rotateY(0deg); }
  to   { transform: rotateX(-25deg) rotateY(360deg); }
}
.stack-cube {
  position: absolute; width: 100px; height: 100px; top: 0; left: 0;
  transform-style: preserve-3d; transform-origin: 50% 50% 0;
}
.stack-cube .face { width: 100px; height: 100px; }

/* ===== 像素纹理贴图（沿用自 yangben02 修正版） ===== */
.pixel-grass-top {
  background:
    radial-gradient(circle at 25% 25%, rgba(255,255,255,0.18) 1.5px, transparent 2px),
    radial-gradient(circle at 75% 30%, rgba(0,0,0,0.18) 1.5px, transparent 2px),
    radial-gradient(circle at 40% 70%, rgba(255,255,255,0.15) 1.5px, transparent 2px),
    radial-gradient(circle at 80% 80%, rgba(0,0,0,0.2) 1.5px, transparent 2px),
    radial-gradient(circle at 15% 80%, rgba(255,255,255,0.12) 1px, transparent 1.5px),
    linear-gradient(135deg, var(--mc-grass-light) 0%, var(--mc-grass) 50%, var(--mc-grass-dark) 100%);
  background-size: 25px 25px, 25px 25px, 25px 25px, 25px 25px, 25px 25px, 100% 100%;
}
.pixel-grass-side {
  background:
    linear-gradient(180deg,
      var(--mc-grass) 0%,
      var(--mc-grass) 22%,
      var(--mc-grass-dark) 22%,
      var(--mc-grass-dark) 30%,
      var(--mc-dirt) 30%,
      var(--mc-dirt) 100%),
    radial-gradient(circle at 30% 45%, rgba(0,0,0,0.2) 1px, transparent 2px),
    radial-gradient(circle at 70% 70%, rgba(0,0,0,0.15) 1px, transparent 2px),
    radial-gradient(circle at 50% 85%, rgba(255,255,255,0.1) 1px, transparent 2px);
  background-size: 100% 100%, 20px 20px, 20px 20px, 20px 20px;
}
.pixel-dirt {
  background:
    radial-gradient(circle at 25% 25%, rgba(0,0,0,0.25) 1.5px, transparent 2px),
    radial-gradient(circle at 70% 30%, rgba(255,255,255,0.1) 1px, transparent 2px),
    radial-gradient(circle at 50% 60%, rgba(0,0,0,0.2) 1.5px, transparent 2px),
    radial-gradient(circle at 80% 80%, rgba(255,255,255,0.08) 1px, transparent 2px),
    linear-gradient(135deg, var(--mc-dirt) 0%, var(--mc-dirt-dark) 100%);
  background-size: 20px 20px;
}
.pixel-diamond {
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.45) 2px, transparent 4px),
    radial-gradient(circle at 70% 70%, rgba(255,255,255,0.3) 1.5px, transparent 3px),
    radial-gradient(circle at 50% 20%, rgba(255,255,255,0.25) 1.5px, transparent 3px),
    radial-gradient(circle at 20% 70%, rgba(0,0,0,0.15) 1px, transparent 2px),
    radial-gradient(circle at 80% 30%, rgba(0,0,0,0.2) 1px, transparent 2px),
    linear-gradient(135deg, var(--mc-diamond-light) 0%, var(--mc-diamond) 50%, var(--mc-diamond-dark) 100%);
  background-size: 25px 25px, 25px 25px, 25px 25px, 20px 20px, 20px 20px, 100% 100%;
}
.pixel-gold {
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4) 2px, transparent 4px),
    radial-gradient(circle at 70% 70%, rgba(255,255,255,0.28) 1.5px, transparent 3px),
    radial-gradient(circle at 50% 20%, rgba(255,200,50,0.3) 1.5px, transparent 3px),
    radial-gradient(circle at 20% 70%, rgba(0,0,0,0.2) 1px, transparent 2px),
    radial-gradient(circle at 80% 30%, rgba(0,0,0,0.25) 1px, transparent 2px),
    linear-gradient(135deg, var(--mc-gold-light) 0%, var(--mc-gold) 50%, var(--mc-gold-dark) 100%);
  background-size: 25px 25px, 25px 25px, 25px 25px, 20px 20px, 20px 20px, 100% 100%;
}
.pixel-emerald {
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4) 2px, transparent 4px),
    radial-gradient(circle at 70% 70%, rgba(0,0,0,0.2) 1.5px, transparent 3px),
    linear-gradient(135deg, #80e8b3 0%, var(--mc-emerald) 50%, #2e7d52 100%);
  background-size: 25px 25px, 20px 20px, 100% 100%;
}
.pixel-lapis {
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.3) 2px, transparent 4px),
    radial-gradient(circle at 70% 70%, rgba(0,0,0,0.25) 1.5px, transparent 3px),
    linear-gradient(135deg, #6788d6 0%, var(--mc-lapis) 50%, #1f3878 100%);
  background-size: 25px 25px, 20px 20px, 100% 100%;
}

/* ===== IP 卡片 ===== */
.ip-card {
  display: inline-flex; align-items: stretch;
  background: var(--bg-card-2);
  border: 2px solid var(--border-bright);
  padding: 6px 6px 6px 24px;
  margin: 0 auto;
  backdrop-filter: blur(10px);
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.5),
    0 8px 30px rgba(0,0,0,0.4),
    0 0 40px var(--accent-glow);
}
.ip-info { text-align: left; padding-right: 24px; min-width: 240px; }
.ip-label {
  font-size: 11px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.15em; margin-bottom: 4px;
}
.ip-address {
  font-family: 'Press Start 2P', monospace;
  font-size: 16px; color: var(--accent); letter-spacing: 0.05em;
}
.ip-copy {
  background: var(--mc-grass); color: #0a0f0a;
  border: 2px solid #000; padding: 12px 24px;
  font-family: 'Press Start 2P', monospace;
  font-size: 11px; letter-spacing: 0.05em; cursor: pointer;
  display: flex; align-items: center; gap: 8px;
  box-shadow:
    inset 0 3px 0 rgba(255,255,255,0.3),
    inset 0 -3px 0 rgba(0,0,0,0.2),
    0 4px 0 #1a1a1a;
  transition: all 0.15s;
}
.ip-copy:hover { transform: translateY(2px); box-shadow: inset 0 3px 0 rgba(255,255,255,0.3), inset 0 -3px 0 rgba(0,0,0,0.2), 0 2px 0 #1a1a1a; }
.ip-copy.copied { background: var(--mc-gold); }

/* ===== Hero 统计 ===== */
.hero-stats { display: flex; justify-content: center; gap: 60px; flex-wrap: wrap; }
.hero-stat-num {
  font-family: 'Press Start 2P', monospace;
  font-size: 28px; color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow); margin-bottom: 8px;
}
.hero-stat-label {
  font-size: 13px; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.1em;
}

/* ===== Section 通用 ===== */
.section-header { text-align: center; max-width: 700px; margin: 0 auto 60px; }
.section-tag {
  display: inline-block; font-family: 'Press Start 2P', monospace;
  font-size: 11px; color: var(--accent); letter-spacing: 0.15em;
  margin-bottom: 16px; padding: 6px 14px;
  background: rgba(126, 217, 87, 0.1); border: 1px solid var(--border-strong);
}
.section-title {
  font-family: 'Press Start 2P', monospace;
  font-size: clamp(24px, 4vw, 42px); margin-bottom: 18px; line-height: 1.3;
}
.section-subtitle { font-size: 16px; color: var(--text-secondary); line-height: 1.7; }

/* ===== 统计卡片网格 ===== */
.stats-section { padding: 0 5%; position: relative; z-index: 5; margin-top: -50px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1300px; margin: 0 auto; }
.stat-card {
  background: var(--bg-card); border: 2px solid var(--border);
  padding: 28px 24px; position: relative; overflow: hidden;
  backdrop-filter: blur(10px); transition: all 0.3s;
}
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
}
.stat-card:hover { border-color: var(--border-strong); transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,0.4); }
.stat-icon { font-size: 24px; color: var(--accent); margin-bottom: 12px; }
.stat-value { font-family: 'Press Start 2P', monospace; font-size: 22px; color: var(--text-primary); margin-bottom: 6px; }
.stat-name { font-size: 13px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.1em; }

/* ===== 关于区 ===== */
.about { padding: 120px 5%; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; max-width: 1300px; margin: 0 auto; }
.about-text h2 {
  font-family: 'Press Start 2P', monospace;
  font-size: clamp(20px, 3vw, 36px); margin: 16px 0 24px; line-height: 1.3;
}
.about-text h2 span { color: var(--accent); }
.about-text p { color: var(--text-secondary); margin-bottom: 16px; font-size: 16px; line-height: 1.8; }
.feature-list { list-style: none; margin-top: 32px; }
.feature-list li { display: flex; align-items: flex-start; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.feature-list li:last-child { border-bottom: none; }
.feature-icon {
  width: 36px; height: 36px; background: var(--mc-grass);
  display: flex; align-items: center; justify-content: center;
  color: #0a0f0a; border: 2px solid #000;
  box-shadow: inset 0 3px 0 rgba(255,255,255,0.3), 0 3px 0 #1a1a1a;
  font-size: 14px; flex-shrink: 0;
}
.feature-text strong { display: block; color: var(--text-primary); margin-bottom: 4px; font-size: 15px; }
.feature-text span { font-size: 13px; color: var(--text-muted); }

/* ===== 游戏模式卡片（首页快速导航） ===== */
.modes-grid, .quick-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px; max-width: 1300px; margin: 0 auto;
}
.mode-card, .quick-card {
  background: var(--bg-card); border: 2px solid var(--border);
  padding: 32px 28px; position: relative; overflow: hidden;
  text-decoration: none; color: var(--text-primary);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.3s, border-color 0.3s, background 0.3s;
  cursor: pointer; display: block;
}
.mode-card::before, .quick-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--mode-color, var(--accent));
  transform: scaleX(0); transform-origin: left; transition: transform 0.4s;
}
.mode-card:hover, .quick-card:hover {
  border-color: var(--mode-color, var(--accent));
  background: var(--bg-card-2);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  transform: translateY(-4px);
}
.mode-card:hover::before, .quick-card:hover::before { transform: scaleX(1); }
.mode-icon {
  width: 56px; height: 56px; background: var(--mode-color, var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: #0a0f0a; margin-bottom: 18px;
  border: 2px solid #000;
  box-shadow: inset 0 4px 0 rgba(255,255,255,0.25), inset 0 -4px 0 rgba(0,0,0,0.2), 0 4px 0 #1a1a1a;
}
.mode-card h3, .quick-card h3 {
  font-family: 'Press Start 2P', monospace; font-size: 14px;
  margin-bottom: 12px; color: var(--text-primary); letter-spacing: 0.04em;
}
.mode-card p, .quick-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 16px; }
.mode-stats { display: flex; gap: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.mode-stat { font-size: 12px; color: var(--text-muted); }
.mode-stat strong { display: block; color: var(--mode-color, var(--accent)); font-size: 16px; font-family: 'Press Start 2P', monospace; margin-bottom: 4px; }

/* ===== 加入步骤区 ===== */
.join-card {
  background: var(--bg-card-2); border: 2px solid var(--border-bright);
  padding: 60px; position: relative; overflow: hidden; max-width: 1100px; margin: 0 auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 40px var(--accent-glow);
}
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-bottom: 40px; }
.step { text-align: center; position: relative; }
.step-num {
  width: 60px; height: 60px; background: var(--mc-grass);
  color: #0a0f0a; font-family: 'Press Start 2P', monospace; font-size: 20px;
  display: flex; align-items: center; justify-content: center; margin: 0 auto 20px;
  border: 3px solid #000;
  box-shadow: inset 0 4px 0 rgba(255,255,255,0.3), 0 6px 0 #1a1a1a, 0 8px 20px rgba(0,0,0,0.4);
}
.step h4 { font-family: 'Press Start 2P', monospace; font-size: 13px; margin-bottom: 12px; }
.step p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }
.join-ip {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 24px 28px; background: rgba(10, 15, 10, 0.6); border: 2px dashed var(--border-strong);
  flex-wrap: wrap;
}
.join-ip-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.15em; margin-bottom: 4px; }
.join-ip-value { font-family: 'Press Start 2P', monospace; font-size: 18px; color: var(--accent); text-shadow: 0 0 15px var(--accent-glow); }

/* ===== FAQ ===== */
.faq-container { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--bg-card); border: 2px solid var(--border); margin-bottom: 12px; overflow: hidden; transition: all 0.3s; }
.faq-item.active { border-color: var(--border-strong); background: var(--bg-card-2); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.faq-question {
  padding: 22px 28px; display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; font-family: 'Press Start 2P', monospace; font-size: 12px;
  transition: color 0.2s; gap: 20px;
}
.faq-question:hover { color: var(--accent); }
.faq-item.active .faq-question { color: var(--accent); }
.faq-icon { width: 24px; height: 24px; position: relative; flex-shrink: 0; }
.faq-icon::before, .faq-icon::after { content: ''; position: absolute; background: currentColor; transition: transform 0.3s; }
.faq-icon::before { width: 100%; height: 3px; top: 50%; transform: translateY(-50%); }
.faq-icon::after { width: 3px; height: 100%; left: 50%; transform: translateX(-50%); }
.faq-item.active .faq-icon::after { transform: translateX(-50%) rotate(90deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-item.active .faq-answer { max-height: 400px; }
.faq-answer-content { padding: 0 28px 24px; color: var(--text-secondary); font-size: 14px; line-height: 1.7; }

/* ===== 整合包下载卡（首页专用） ===== */
.download-card { background: var(--bg-card); border: 2px solid var(--border-gold, rgba(255,210,63,0.3)); padding: 28px; border-left: 4px solid var(--mc-gold); }

/* ===== 输入框 ===== */
.input, input[type=text], input[type=password], input[type=email], textarea {
  width: 100%;
  background: rgba(10, 20, 16, 0.6);
  border: 2px solid var(--border); padding: 14px 16px;
  color: var(--fg); font-family: inherit; font-size: 14px;
  transition: all 0.2s; outline: none;
}
.input:focus, input:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(126, 217, 87, 0.15), 0 0 20px var(--accent-glow);
  background: rgba(10, 20, 16, 0.9);
}
.input::placeholder, input::placeholder { color: var(--text-muted); }
label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
.form-row { margin-bottom: 16px; }

/* ===== Grid ===== */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* ===== 聊天消息 ===== */
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.chat-list { max-height: 480px; overflow-y: auto; padding: 4px; background: rgba(10,20,16,0.4); border: 2px solid var(--border); }
.chat-list::-webkit-scrollbar { width: 8px; }
.chat-list::-webkit-scrollbar-track { background: transparent; }
.chat-list::-webkit-scrollbar-thumb { background: var(--border-bright); }
.chat-msg { padding: 12px 14px; margin-bottom: 8px; background: rgba(126,217,87,0.04); border-left: 3px solid var(--accent); transition: background 0.2s, transform 0.2s; word-break: break-word; animation: msgIn 0.3s cubic-bezier(0.2,0.9,0.4,1.1); }
.chat-msg:hover { background: rgba(126,217,87,0.08); transform: translateX(4px); }
@keyframes msgIn { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: translateX(0); } }
.chat-msg .chat-user { font-weight: 700; color: var(--accent); margin-right: 8px; font-family: 'Press Start 2P', 'Chakra Petch', monospace; font-size: 12px; }
.chat-msg .chat-date { font-size: 0.7rem; color: var(--text-muted); margin-left: 8px; }
.chat-msg.system { color: var(--accent); font-style: italic; background: rgba(126,217,87,0.06); border-left-color: var(--mc-gold); text-align: center; padding: 8px 12px; }

/* ===== 公告 ===== */
.announce-item { background: var(--bg-card); border: 2px solid var(--border); border-left: 4px solid var(--accent); padding: 18px 22px; margin-bottom: 14px; transition: all 0.3s cubic-bezier(0.2,0.9,0.4,1.1); }
.announce-item:hover { transform: translateX(6px); border-left-color: var(--accent-2); background: var(--card-hover); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.announce-date { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 8px; font-family: 'Press Start 2P', 'Chakra Petch', monospace; letter-spacing: 0.05em; }
.announce-title { font-weight: 700; font-size: 1.05rem; color: var(--accent); margin-bottom: 8px; }
.announce-content { font-size: 0.9rem; line-height: 1.6; color: var(--text-primary); }

/* ===== 赞助/友链 ===== */
.sponsor-item { background: var(--bg-card); border: 2px solid var(--border); border-left: 4px solid var(--accent-2); padding: 14px 18px; margin-bottom: 12px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; transition: all 0.3s; }
.sponsor-item:hover { transform: translateX(6px); background: var(--card-hover); }
.sponsor-amount { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #0a0f0a; padding: 4px 14px; font-size: 0.8rem; font-weight: 700; font-family: 'Press Start 2P', 'Chakra Petch', monospace; }
.friendlink-card { background: var(--bg-card); border: 2px solid var(--border); border-left: 4px solid var(--accent); padding: 16px 20px; margin-bottom: 12px; transition: all 0.3s; }
.friendlink-card:hover { transform: translateX(6px); background: var(--card-hover); }
.friendlink-name { font-weight: 700; color: var(--accent); margin-bottom: 4px; }
.friendlink-desc { font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 10px; }
.friendlink-link { display: inline-block; padding: 4px 14px; background: rgba(126,217,87,0.08); border: 1px solid var(--border-bright); color: var(--accent); font-size: 0.78rem; transition: all 0.2s; }
.friendlink-link:hover { background: rgba(126,217,87,0.16); box-shadow: 0 0 12px var(--accent-glow); }

/* ===== 徽章 / 标签 ===== */
.tag { display: inline-block; padding: 4px 12px; font-size: 0.75rem; font-family: 'Press Start 2P', 'Chakra Petch', monospace; letter-spacing: 0.05em; background: rgba(126,217,87,0.08); color: var(--accent); border: 1px solid var(--border); }
.tag.warn { background: rgba(255,210,61,0.1); color: var(--mc-gold); border-color: rgba(255,210,61,0.3); }
.tag.danger { background: rgba(255,82,82,0.1); color: var(--danger); border-color: rgba(255,82,82,0.3); }

/* ===== 地址复制条 ===== */
.addr-row { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; background: rgba(10,20,16,0.5); border: 2px solid var(--border); margin-bottom: 10px; gap: 12px; flex-wrap: wrap; transition: all 0.2s; }
.addr-row:hover { border-color: var(--border-bright); background: rgba(10,20,16,0.7); }
.addr-label { font-size: 0.72rem; color: var(--text-muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.1em; font-family: 'Press Start 2P', 'Chakra Petch', monospace; }
.addr-value { font-family: 'Press Start 2P', 'Chakra Petch', monospace; font-weight: 600; color: var(--accent); word-break: break-all; }

/* ===== Toast ===== */
.toast { position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(100px); background: var(--mc-grass); color: #0a0f0a; padding: 14px 28px; font-family: 'Press Start 2P', monospace; font-size: 12px; border: 2px solid #000; box-shadow: inset 0 3px 0 rgba(255,255,255,0.3), 0 4px 0 #1a1a1a, 0 8px 20px rgba(0,0,0,0.4); z-index: 1000; opacity: 0; transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); display: flex; align-items: center; gap: 10px; pointer-events: none; }
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ===== 滚动指示 ===== */
.scroll-indicator {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--text-muted); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.15em; animation: bounceDown 2s ease-in-out infinite;
}
.mouse { width: 24px; height: 38px; border: 2px solid var(--text-muted); border-radius: 12px; position: relative; }
.wheel { width: 4px; height: 8px; background: var(--accent); position: absolute; top: 6px; left: 50%; transform: translateX(-50%); animation: wheel 2s ease-in-out infinite; }
@keyframes wheel { 0% { opacity: 1; top: 6px; } 100% { opacity: 0; top: 18px; } }
@keyframes bounceDown { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* ===== 滚动显现 ===== */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.active { opacity: 1; transform: translateY(0); }

/* ===== Hero 区域 ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 120px 5% 80px; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at top, rgba(126, 217, 87, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(255, 210, 63, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at bottom left, rgba(77, 208, 225, 0.08) 0%, transparent 50%);
}
.hero-content { position: relative; z-index: 10; text-align: center; max-width: 1000px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 16px; background: rgba(126, 217, 87, 0.1);
  border: 1px solid var(--border-strong); border-radius: 100px;
  font-size: 13px; color: var(--accent); margin-bottom: 32px;
  backdrop-filter: blur(10px);
}
.tag-dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 10px var(--accent); animation: pulse 1.5s ease-in-out infinite; }
section.block { padding: 100px 5%; position: relative; z-index: 5; }

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-deep); padding: 60px 5% 30px;
  border-top: 2px solid var(--border); position: relative; z-index: 5;
}
.footer-inner { max-width: 1300px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 50px; margin-bottom: 40px; }
.footer-brand p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin: 16px 0 20px; max-width: 360px; }
.social-links { display: flex; gap: 12px; }
.social-link {
  width: 40px; height: 40px; background: rgba(126,217,87,0.1);
  border: 2px solid var(--border); display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); text-decoration: none; transition: all 0.2s;
}
.social-link:hover { background: var(--mc-grass); color: #0a0f0a; border-color: #000; transform: translateY(-3px); box-shadow: 0 4px 0 #1a1a1a; }
.footer-col h5 { font-family: 'Press Start 2P', monospace; font-size: 12px; color: var(--accent); margin-bottom: 18px; letter-spacing: 0.04em; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--text-secondary); text-decoration: none; font-size: 14px; transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 13px; }
.footer .row { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; margin: 8px 0; }
.footer a { color: var(--accent-2); }
.footer .qq { display: inline-block; padding: 6px 14px; background: rgba(126,217,87,0.06); border: 1px solid var(--border); }
/* 旧 footer 样式兼容（render_page 直接 echo footer.php 用） */
.footer > .footer-row { display:flex; justify-content:center; gap:24px; flex-wrap:wrap; margin: 8px 0; }

/* ===== Modal ===== */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(8px); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 20px; opacity: 0; visibility: hidden; transition: all 0.3s; }
.modal.open { opacity: 1; visibility: visible; }
.modal-card { background: var(--bg-secondary); border: 2px solid var(--border-bright); max-width: 460px; width: 100%; padding: 32px; text-align: center; box-shadow: 0 12px 50px var(--accent-glow); transform: translateY(20px); transition: transform 0.3s; }
.modal.open .modal-card { transform: translateY(0); }
.modal-card h3 { font-family: 'Press Start 2P', monospace; color: var(--accent); margin-bottom: 14px; font-size: 18px; }
.modal-card p { color: var(--text-primary); margin-bottom: 22px; line-height: 1.6; }
.modal-actions { display: flex; gap: 12px; justify-content: center; }

/* ===== 工具类 ===== */
.mt-12 { margin-top: 12px; } .mt-24 { margin-top: 24px; } .mt-32 { margin-top: 32px; }
.mb-12 { margin-bottom: 12px; } .mb-24 { margin-bottom: 24px; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-ok { color: var(--accent); }
.text-warn { color: var(--mc-gold); }
.text-danger { color: var(--danger); }
.flex { display: flex; } .flex-col { flex-direction: column; } .items-center { align-items: center; } .justify-between { justify-content: space-between; } .gap-12 { gap: 12px; } .gap-24 { gap: 24px; }
.hidden { display: none !important; }

/* ===== 响应式 ===== */
@media (max-width: 968px) {
  .nav-links { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; gap: 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .join-card { padding: 40px 24px; }
  .nav-status { display: none; }
  .cube, .face, .stack-cube .face { width: 70px; height: 70px; }
  .face-front  { transform: translateZ(35px); }
  .face-back   { transform: translateZ(-35px) rotateY(180deg); }
  .face-right  { transform: rotateY(90deg) translateZ(35px); }
  .face-left   { transform: rotateY(-90deg) translateZ(35px); }
  .face-top    { transform: rotateX(90deg) translateZ(35px); }
  .face-bottom { transform: rotateX(-90deg) translateZ(35px); }
  .stack-cube { width: 70px; height: 70px; }
  .cube-stack { width: 70px; height: 70px; }
  .ip-address { font-size: 13px; }
}
@media (max-width: 640px) {
  .nav { padding: 14px 4%; }
  .hero-stats { gap: 30px; }
  .hero-stat-num { font-size: 22px; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .ip-card { flex-direction: column; gap: 12px; padding: 16px; }
  .ip-info { padding-right: 0; text-align: center; min-width: 0; }
  .join-ip { flex-direction: column; text-align: center; }
  .logo-text { font-size: 11px; }
  .nav-inner { padding: 0; }
}