/* ===== 闪电研究院 - 全局样式 v3.0 毛玻璃风格 ===== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #0f1219;
  --bg-card: rgba(17, 20, 34, 0.6);
  --bg-card-hover: rgba(23, 27, 42, 0.8);
  --bg-glass: rgba(10, 13, 20, 0.7);
  --bg-glass-light: rgba(255, 255, 255, 0.05);
  --text-primary: #f0f2f5;
  --text-secondary: #8b95a9;
  --text-muted: #5a6178;
  --accent: #00d4ff;
  --accent-dim: rgba(0, 212, 255, 0.12);
  --accent-glow: rgba(0, 212, 255, 0.2);
  --accent-purple: #7c5cfc;
  --accent-purple-dim: rgba(124, 92, 252, 0.12);
  --success: #00e5a0;
  --warning: #ffb020;
  --danger: #ff4757;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --radius: 20px;
  --radius-sm: 16px;
  --radius-lg: 32px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 0 40px rgba(0, 212, 255, 0.15);
  --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --max-width: 1280px;
}

[data-theme="light"] {
  --bg-primary: #f0f2f5;
  --bg-secondary: #e4e7eb;
  --bg-card: rgba(255, 255, 255, 0.7);
  --bg-card-hover: rgba(255, 255, 255, 0.9);
  --bg-glass: rgba(240, 242, 245, 0.8);
  --bg-glass-light: rgba(255, 255, 255, 0.5);
  --text-primary: #0f1219;
  --text-secondary: #4a5568;
  --text-muted: #8896a6;
  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.12);
  --shadow-accent: 0 0 40px rgba(0, 212, 255, 0.1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--text-primary); }
img { max-width: 100%; display: block; }

/* ===== 炫酷科技背景系统 v4.0 ===== */
.tech-bg {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
  background: var(--bg-primary);
  overflow: hidden;
}

/* 动态科技网格 */
.tech-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 200%;
  height: 200%;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  animation: gridMove 60s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-50%, -50%); }
}

/* 主光晕层 */
.tech-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    /* 左上角青色主光晕 */
    radial-gradient(ellipse 1200px 800px at 10% 5%, rgba(0, 212, 255, 0.12) 0%, transparent 60%),
    /* 右上角紫色辅助光晕 */
    radial-gradient(ellipse 1000px 700px at 90% 15%, rgba(124, 92, 252, 0.1) 0%, transparent 60%),
    /* 右下角青色光晕 */
    radial-gradient(ellipse 900px 600px at 85% 85%, rgba(0, 212, 255, 0.08) 0%, transparent 60%),
    /* 底部中心光晕 */
    radial-gradient(ellipse 800px 500px at 50% 100%, rgba(0, 212, 255, 0.06) 0%, transparent 60%),
    /* 左侧边缘光 */
    radial-gradient(ellipse 400px 800px at 0% 50%, rgba(124, 92, 252, 0.05) 0%, transparent 60%),
    /* 右上角微光 */
    radial-gradient(ellipse 600px 400px at 95% 5%, rgba(0, 212, 255, 0.05) 0%, transparent 60%);
  animation: mainGlow 25s ease-in-out infinite alternate;
}

@keyframes mainGlow {
  0% { opacity: 0.7; transform: scale(1); }
  33% { opacity: 0.85; transform: scale(1.02) translate(1%, 0.5%); }
  66% { opacity: 0.75; transform: scale(1.01) translate(-0.5%, 1%); }
  100% { opacity: 0.8; transform: scale(1.03); }
}

/* 浮动粒子层 */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0;
  filter: blur(1px);
  animation: particleFloat linear infinite;
}

.particle--small {
  width: 2px;
  height: 2px;
  box-shadow:
    0 0 4px var(--accent),
    0 0 8px var(--accent);
}

.particle--medium {
  width: 3px;
  height: 3px;
  box-shadow:
    0 0 6px var(--accent),
    0 0 12px var(--accent),
    0 0 20px rgba(0, 212, 255, 0.5);
}

.particle--large {
  width: 4px;
  height: 4px;
  background: var(--accent);
  box-shadow:
    0 0 8px var(--accent),
    0 0 16px var(--accent),
    0 0 32px rgba(0, 212, 255, 0.6),
    0 0 48px rgba(0, 212, 255, 0.3);
}

.particle--purple {
  background: var(--accent-purple);
  box-shadow:
    0 0 8px var(--accent-purple),
    0 0 16px var(--accent-purple),
    0 0 32px rgba(124, 92, 252, 0.6);
}

@keyframes particleFloat {
  0% {
    opacity: 0;
    transform: translateY(100vh) translateX(0) scale(0);
  }
  10% {
    opacity: 0.8;
    transform: translateY(85vh) translateX(15px) scale(1);
  }
  50% {
    opacity: 0.6;
    transform: translateY(45vh) translateX(-25px) scale(1.1);
  }
  90% {
    opacity: 0.4;
    transform: translateY(10vh) translateX(20px) scale(0.9);
  }
  100% {
    opacity: 0;
    transform: translateY(-15vh) translateX(-10px) scale(0);
  }
}

/* 扫描线效果 */
.scan-line {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(0, 212, 255, 0.1) 20%,
    rgba(0, 212, 255, 0.3) 50%,
    rgba(0, 212, 255, 0.1) 80%,
    transparent 100%
  );
  z-index: 0;
  pointer-events: none;
  animation: scanMove 8s linear infinite;
  opacity: 0.5;
}

@keyframes scanMove {
  0% { top: -2%; }
  100% { top: 102%; }
}

/* 边缘光效 */
.edge-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.edge-glow::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    /* 顶部渐变 */
    linear-gradient(180deg, rgba(0, 212, 255, 0.03) 0%, transparent 15%),
    /* 底部渐变 */
    linear-gradient(0deg, rgba(0, 212, 255, 0.03) 0%, transparent 15%),
    /* 左侧渐变 */
    linear-gradient(90deg, rgba(124, 92, 252, 0.02) 0%, transparent 10%),
    /* 右侧渐变 */
    linear-gradient(270deg, rgba(0, 212, 255, 0.02) 0%, transparent 10%);
}

/* 浮动几何装饰 */
.geo-shapes {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.geo-shape {
  position: absolute;
  opacity: 0.04;
  animation: geoFloat 30s ease-in-out infinite;
}

.geo-shape--circle {
  width: 300px;
  height: 300px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  top: 15%;
  left: 10%;
  animation-delay: 0s;
}

.geo-shape--circle-2 {
  width: 200px;
  height: 200px;
  border: 1px solid var(--accent-purple);
  border-radius: 50%;
  top: 60%;
  right: 15%;
  animation-delay: -10s;
}

.geo-shape--hexagon {
  width: 150px;
  height: 150px;
  border: 1px solid var(--accent);
  top: 70%;
  left: 5%;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  animation-delay: -5s;
}

.geo-shape--triangle {
  width: 0;
  height: 0;
  border-left: 80px solid transparent;
  border-right: 80px solid transparent;
  border-bottom: 140px solid rgba(0, 212, 255, 0.1);
  top: 20%;
  right: 20%;
  animation-delay: -15s;
}

.geo-shape--square {
  width: 120px;
  height: 120px;
  border: 1px solid var(--accent-purple);
  top: 40%;
  left: 80%;
  transform: rotate(45deg);
  animation-delay: -20s;
}

@keyframes geoFloat {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
    opacity: 0.04;
  }
  25% {
    transform: translate(30px, -20px) rotate(5deg);
    opacity: 0.06;
  }
  50% {
    transform: translate(-20px, 30px) rotate(-3deg);
    opacity: 0.04;
  }
  75% {
    transform: translate(10px, 20px) rotate(2deg);
    opacity: 0.05;
  }
}

/* 数据流动线 */
.data-flow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.data-line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(0, 212, 255, 0.3) 30%,
    rgba(0, 212, 255, 0.6) 50%,
    rgba(0, 212, 255, 0.3) 70%,
    transparent 100%
  );
  animation: dataMove linear infinite;
}

.data-line--1 {
  width: 200px;
  top: 20%;
  animation-duration: 15s;
  animation-delay: 0s;
}

.data-line--2 {
  width: 300px;
  top: 35%;
  animation-duration: 20s;
  animation-delay: -5s;
}

.data-line--3 {
  width: 250px;
  top: 50%;
  animation-duration: 18s;
  animation-delay: -10s;
}

.data-line--4 {
  width: 180px;
  top: 65%;
  animation-duration: 22s;
  animation-delay: -8s;
}

.data-line--5 {
  width: 220px;
  top: 80%;
  animation-duration: 16s;
  animation-delay: -3s;
}

@keyframes dataMove {
  0% {
    left: -300px;
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    left: 100%;
    opacity: 0;
  }
}

/* 内容层在背景之上 */
.navbar, .main-content, .footer, .toast-container, .admin-login, .admin-layout, .mobile-nav {
  position: relative;
  z-index: 1;
}

/* 动态闪电效果 Canvas */
.lightning-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* 备用背景装饰层 */
.bg-decoration {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}


/* 底部渐变 */
.bg-gradient-bottom {
  position: fixed; bottom: 0; left: 0; width: 100%; height: 200px;
  background: linear-gradient(to top, rgba(0, 212, 255, 0.02) 0%, transparent 100%);
  z-index: 0; pointer-events: none;
}

[data-theme="light"] .tech-bg::before {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.015) 1px, transparent 1px);
}
[data-theme="light"] .particle { 
  background: linear-gradient(135deg, var(--accent-purple), var(--accent)); 
}

/* ===== 导航栏 v3.0 毛玻璃 ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 0 48px; height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  transition: all var(--transition);
}
.navbar.scrolled {
  background: var(--bg-glass);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
}
.navbar__logo {
  display: flex; align-items: center; gap: 14px;
  font-size: 1.25rem; font-weight: 700; color: var(--text-primary);
  cursor: pointer; user-select: none;
  transition: transform var(--transition);
}
.navbar__logo:hover { transform: scale(1.02); }
.navbar__logo svg { 
  width: 32px; height: 32px; 
  color: var(--accent); 
  filter: drop-shadow(0 0 12px var(--accent-glow));
  transition: filter var(--transition);
}
.navbar__logo:hover svg { filter: drop-shadow(0 0 20px var(--accent-glow)); }
.navbar__links { display: flex; align-items: center; gap: 8px; list-style: none; }
.navbar__links a {
  padding: 10px 20px; border-radius: 50px;
  color: var(--text-secondary); font-size: 0.92rem; font-weight: 500;
  transition: all var(--transition); position: relative;
  letter-spacing: 0.02em;
  background: transparent;
}
.navbar__links a:hover, .navbar__links a.active { 
  color: var(--accent); 
  background: var(--accent-dim);
  backdrop-filter: blur(10px);
}
.navbar__links a.active::after {
  content: ''; position: absolute; bottom: 6px; left: 50%; transform: translateX(-50%);
  width: 16px; height: 2px; background: var(--accent); border-radius: 2px;
  box-shadow: 0 0 8px var(--accent-glow);
}
.navbar__actions { display: flex; align-items: center; gap: 12px; }
.navbar__actions button {
  background: var(--bg-glass-light);
  border: 1px solid var(--border);
  color: var(--text-secondary); padding: 8px 18px;
  border-radius: 50px; cursor: pointer;
  font-size: 0.88rem; font-weight: 600; transition: all var(--transition);
  letter-spacing: 0.02em;
  backdrop-filter: blur(10px);
}
.navbar__actions button:hover { 
  border-color: var(--accent); color: var(--accent); 
  background: var(--accent-dim); 
  box-shadow: 0 0 20px var(--accent-glow);
}

/* ===== Hero v2.0 ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 120px 48px 80px; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: 
    radial-gradient(circle at 35% 45%, var(--accent-dim) 0%, transparent 45%),
    radial-gradient(circle at 65% 55%, rgba(124, 92, 252, 0.06) 0%, transparent 45%);
  animation: heroGlow 15s ease-in-out infinite alternate;
}
/* 底部渐变遮罩 */
.hero::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 200px;
  background: linear-gradient(to bottom, transparent 0%, var(--bg-primary) 100%);
  pointer-events: none; z-index: 1;
}
@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-3%, 2%) scale(1.08); }
}
.hero__content { position: relative; z-index: 2; max-width: 900px; }
.hero__title {
  font-size: 4.5rem; font-weight: 800; line-height: 1.1;
  margin-bottom: 28px; letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 50%, var(--accent-purple) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__title span { 
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-purple) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__subtitle {
  font-size: 1.35rem; color: var(--text-secondary);
  max-width: 680px; margin: 0 auto 48px; line-height: 1.9;
  font-weight: 400; letter-spacing: 0.01em;
}
.hero__actions { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }

/* ===== 按钮 v3.0 毛玻璃 ===== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: 50px;
  font-size: 1rem; font-weight: 600; border: none;
  cursor: pointer; transition: all var(--transition); text-decoration: none;
  letter-spacing: 0.02em;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}
.btn--primary { 
  background: linear-gradient(135deg, var(--accent), var(--accent-purple));
  color: #0a0d14; 
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}
.btn--primary:hover { 
  transform: translateY(-3px); 
  box-shadow: 0 12px 40px rgba(0, 212, 255, 0.4);
  color: #0a0d14; 
}
.btn--outline { 
  background: var(--bg-glass-light);
  border: 1px solid var(--border); 
  color: var(--text-primary);
  backdrop-filter: blur(20px);
}
.btn--outline:hover { 
  border-color: var(--accent); color: var(--accent); 
  background: var(--accent-dim);
}
.btn--danger { 
  background: linear-gradient(135deg, var(--danger), #ff6b7a);
  color: #fff; 
}
.btn--danger:hover { opacity: 0.9; transform: translateY(-2px); }
.btn--sm { padding: 10px 20px; font-size: 0.88rem; border-radius: 50px; }
.btn--glow {
  background: linear-gradient(135deg, var(--accent), var(--accent-purple));
  color: #fff; position: relative; overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.3);
  border-radius: 50px;
}
.btn--glow::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
  opacity: 0; transition: opacity var(--transition);
}
.btn--glow::after {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255,255,255,0.15), transparent);
  transform: rotate(45deg); transition: 0.7s;
}
.btn--glow:hover::before { opacity: 1; }
.btn--glow:hover::after { left: 100%; }
.btn--glow:hover { 
  transform: translateY(-3px); 
  box-shadow: 0 12px 48px rgba(0, 212, 255, 0.4); 
  color: #fff; 
}

/* ===== 板块通用 v2.0 ===== */
.section { padding: 100px 48px; max-width: var(--max-width); margin: 0 auto; position: relative; z-index: 1; }
.section__header { text-align: center; margin-bottom: 64px; }
.section__title { 
  font-size: 2.5rem; font-weight: 700; margin-bottom: 16px; 
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section__desc { font-size: 1.1rem; color: var(--text-secondary); max-width: 680px; margin: 0 auto 20px; line-height: 1.8; }
.section-divider {
  width: 80px; height: 4px; background: linear-gradient(90deg, var(--accent), var(--accent-purple));
  margin: 20px auto 0; border-radius: 4px;
  box-shadow: 0 4px 16px var(--accent-glow);
}

/* ===== 特色卡片 v3.0 毛玻璃 ===== */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; }
.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: 32px; padding: 40px 32px;
  transition: all var(--transition); position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-purple));
  opacity: 0; transition: opacity var(--transition);
  box-shadow: 0 0 20px var(--accent-glow);
}
.feature-card:hover::before { opacity: 1; }
.feature-card:hover { 
  transform: translateY(-8px); 
  border-color: var(--accent); 
  box-shadow: var(--shadow-lg), var(--shadow-accent); 
  background: var(--bg-card-hover);
}
.feature-card__icon {
  width: 64px; height: 64px; border-radius: 24px;
  background: linear-gradient(135deg, var(--accent-dim), var(--accent-purple-dim));
  backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; margin-bottom: 24px; color: var(--accent);
  transition: transform var(--transition);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.15);
}
.feature-card:hover .feature-card__icon { transform: scale(1.1) rotate(5deg); }
.feature-card__title { font-size: 1.3rem; font-weight: 700; margin-bottom: 12px; color: var(--text-primary); }
.feature-card__desc { font-size: 0.98rem; color: var(--text-secondary); line-height: 1.8; }

/* ===== 新闻列表 v3.0 毛玻璃 ===== */
.news-list { display: flex; flex-direction: column; gap: 24px; }
.news-item {
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: 32px; padding: 28px 32px;
  display: flex; gap: 24px; align-items: flex-start; transition: all var(--transition);
}
.news-item:hover { 
  border-color: var(--accent); transform: translateX(8px); 
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}
.news-item__date {
  flex-shrink: 0; 
  background: linear-gradient(135deg, var(--accent-dim), var(--accent-purple-dim));
  backdrop-filter: blur(10px);
  color: var(--accent); padding: 12px 18px; border-radius: 20px;
  font-size: 0.85rem; font-weight: 600; white-space: nowrap;
  border: 1px solid rgba(0, 212, 255, 0.2);
}
.news-item__content h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.news-item__content p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.8; }

/* ===== 软件下载卡片 v3.0 毛玻璃 ===== */
.software-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 32px; }
.software-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: 32px; overflow: hidden;
  transition: all var(--transition); display: flex; flex-direction: column;
}
.software-card:hover { 
  border-color: var(--accent); transform: translateY(-8px); 
  box-shadow: var(--shadow-lg), var(--shadow-accent); 
  background: var(--bg-card-hover);
}
.software-card__cover {
  width: 100%; height: 200px; background: var(--bg-secondary);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.software-card__cover img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--transition);
}
.software-card:hover .software-card__cover img { transform: scale(1.05); }
.software-card__cover--empty {
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
}
.software-card__cover--empty::after {
  content: '📦'; font-size: 3.5rem; opacity: 0.3;
}
.software-card__body { 
  padding: 28px; flex: 1; display: flex; flex-direction: column;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
}
.software-card__name { font-size: 1.25rem; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.software-card__version {
  font-size: 0.82rem; color: var(--accent); background: var(--accent-dim);
  padding: 6px 14px; border-radius: 50px; display: inline-block; margin-bottom: 12px; font-weight: 600;
  border: 1px solid rgba(0, 212, 255, 0.2);
  backdrop-filter: blur(10px);
}
.software-card__desc {
  font-size: 0.95rem; color: var(--text-secondary); flex: 1; margin-bottom: 20px; line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.software-card__footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.software-card__meta { font-size: 0.82rem; color: var(--text-muted); }

/* ===== 资源卡片 v3.0 毛玻璃 ===== */
.resources-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.resource-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: 32px; padding: 28px;
  transition: all var(--transition); display: flex; flex-direction: column;
}
.resource-card:hover { 
  border-color: var(--accent); transform: translateY(-3px); 
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}
.resource-card__name { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.resource-card__desc { font-size: 0.88rem; color: var(--text-secondary); flex: 1; margin-bottom: 16px; line-height: 1.6; }
.resource-card__footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.tag { 
  padding: 8px 16px; border-radius: 50px; font-size: 0.82rem; font-weight: 600;
  backdrop-filter: blur(10px);
}
.tag--original { background: var(--accent-dim); color: var(--accent); border: 1px solid rgba(0, 212, 255, 0.2); }
.tag--external { background: rgba(255, 255, 255, 0.05); color: var(--text-muted); border: 1px solid var(--border); }
.tag--disabled { background: rgba(255, 71, 87, 0.1); color: var(--danger); border: 1px solid rgba(255, 71, 87, 0.2); }

/* ===== 资源详情页 ===== */
.resource-detail { padding-top: 100px; max-width: 900px; margin: 0 auto; }
.resource-detail__cover {
  width: 100%; max-height: 400px; border-radius: var(--radius-lg); overflow: hidden;
  margin-bottom: 32px; background: var(--bg-card); border: 1px solid var(--border);
}
.resource-detail__cover img { width: 100%; height: 400px; object-fit: cover; }
.resource-detail__info { display: flex; gap: 16px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.resource-detail__title { font-size: 2rem; font-weight: 800; margin-bottom: 16px; }
.resource-detail__desc { font-size: 1.05rem; color: var(--text-secondary); line-height: 1.9; margin-bottom: 24px; }
.resource-detail__detail {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 28px; margin-bottom: 24px;
}
.resource-detail__detail h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 12px; color: var(--accent); }
.resource-detail__detail p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.9; white-space: pre-wrap; }
.resource-detail__actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== 关于页面 ===== */
.about-page { padding-top: 100px; }
.about-section { padding: 60px 24px; max-width: var(--max-width); margin: 0 auto; }
.about-section p { font-size: 1.05rem; color: var(--text-secondary); line-height: 2; margin-bottom: 20px; max-width: 900px; }
.about-section h2 { font-size: 1.6rem; font-weight: 700; margin-bottom: 16px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px; margin-top: 40px; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px 24px; text-align: center;
  position: relative; overflow: hidden;
}
.stat-card::before {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-purple));
}
.stat-card__value { font-size: 2.5rem; font-weight: 800; color: var(--accent); line-height: 1; }
.stat-card__label { font-size: 0.88rem; color: var(--text-secondary); margin-top: 8px; }

/* ===== 联系页面 ===== */
.contact-page { padding-top: 100px; }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-bottom: 60px; }
.contact-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px 28px; transition: all var(--transition);
}
.contact-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.contact-card__icon { font-size: 1.8rem; margin-bottom: 16px; }
.contact-card__label { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 6px; font-weight: 500; }
.contact-card__value { font-size: 1.05rem; font-weight: 600; color: var(--text-primary); word-break: break-all; }

/* ===== 捐赠开发者 ===== */
.donors-section { padding: 60px 24px; max-width: var(--max-width); margin: 0 auto; }
.donors-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.donor-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 28px; text-align: center; transition: all var(--transition);
}
.donor-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.donor-card__qrcode {
  width: 64px; height: 64px; margin: 0 auto 14px;
  border-radius: 12px; overflow: hidden;
  border: 2px solid var(--border);
  transition: all .25s ease;
  background: #fff; padding: 4px;
  cursor: pointer;
}
.donor-card:hover .donor-card__qrcode {
  border-color: var(--accent);
  transform: scale(1.08);
  box-shadow: 0 4px 16px rgba(0,0,0,.1);
}
.donor-card__qrcode img {
  width: 100%; height: auto; display: block;
}

/* ===== 二维码小方块按钮（隐藏图片，只显示图标） ===== */
.donor-qrcode-btn {
  display: flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; margin: 0 auto 12px;
  background: var(--bg-secondary); border: 2px solid var(--border);
  border-radius: 14px; cursor: pointer;
  padding: 0; transition: all .25s ease;
}
.donor-card:hover .donor-qrcode-btn { border-color: var(--accent); color: var(--accent); transform: scale(1.08); box-shadow: 0 4px 16px rgba(0,0,0,.12); }
.donor-qrcode-btn svg { width: 22px; height: 22px; display: block; }

/* ===== 全屏二维码弹窗 ===== */
.donor-qr-modal {
  display: none; position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,.65); backdrop-filter: blur(8px);
  justify-content: center; align-items: center;
}
.donor-qr-modal.active { display: flex; animation: qrFadeIn .2s ease; }
@keyframes qrFadeIn { from{opacity:0} to{opacity:1} }

.donor-qr-inner {
  background: var(--bg-card); border-radius: 24px;
  padding: 36px 28px; text-align: center;
  max-width: 380px; width: calc(100% - 40px);
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
  animation: qrSlideUp .3s ease;
  position: relative;
}
@keyframes qrSlideUp { from{transform:translateY(30px);opacity:0} to{transform:none;opacity:1} }

.donor-qr-close {
  position: absolute; top: 14px; right: 18px;
  font-size: 22px; color: var(--text-secondary);
  cursor: pointer; line-height: 1; padding: 4px 8px;
  border-radius: 50%; transition: all .2s;
}
.donor-qr-close:hover { background: rgba(255,255,255,.15); color: var(--text); }

.donor-qr-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 18px; color: var(--text); }

.donor-qr-inner img {
  width: 260px; height: 260px; object-fit: contain;
  border-radius: 16px; border: 1px solid var(--border);
  margin-bottom: 16px; background: #fff; padding: 8px;
}

.donor-qr-tip { font-size: .88rem; color: var(--text-secondary); line-height: 1.6; }
.donor-card__name { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.donor-card__role { font-size: 0.82rem; color: var(--accent); margin-bottom: 12px; font-weight: 500; }
.donor-card__message { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; font-style: italic; }

/* ===== 管理后台捐赠编辑布局 ===== */
.donor-edit-row { display: flex; gap: 20px; align-items: flex-start; }
.donor-image-preview {
  position: relative; width: 160px; height: 120px; overflow: hidden;
  border-radius: var(--radius-sm); border: 1px solid var(--border); margin-bottom: 8px;
}
.donor-image-preview img { width: 100%; height: 100%; object-fit: cover; }
.donor-image-remove {
  position: absolute; top: 4px; right: 4px;
  width: 24px; height: 24px; border-radius: 50%;
  background: rgba(255,71,87,0.9); color: #fff;
  border: none; cursor: pointer; font-size: 14px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: opacity var(--transition);
}
.donor-image-remove:hover { opacity: 0.8; }
.donor-upload-zone { border-width: 1px dashed !important; padding: 12px !important; font-size: 0.82rem; }

@media (max-width: 768px) {
  .donor-edit-row { flex-direction: column; }
  .donor-edit-image { flex: none !important; width: 100% !important; }
  .donor-image-preview { width: 100%; height: 160px; }
}

/* ===== 安全声明 ===== */
.statement-page { padding-top: 100px; }
.statement-block {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px 28px; margin-bottom: 24px;
}
.statement-block h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; color: var(--accent); }
.statement-block p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.9; }

/* ===== 页脚 v3.0 毛玻璃 ===== */
.footer { 
  border-top: 1px solid var(--border); 
  padding: 60px 48px 40px; 
  margin-top: 120px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.footer__inner {
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; align-items: start;
}
.footer__info h3 { 
  font-size: 1.3rem; font-weight: 700; margin-bottom: 12px; 
  color: var(--text-primary);
}
.footer__info p { 
  font-size: 0.92rem; color: var(--text-secondary); 
  line-height: 1.7; max-width: 400px;
}
.footer__links { display: flex; gap: 32px; flex-wrap: wrap; }
.footer__links a { 
  font-size: 0.92rem; color: var(--text-secondary); 
  transition: all var(--transition);
  padding: 4px 0;
}
.footer__links a:hover { color: var(--accent); transform: translateX(4px); }
.footer__bottom {
  max-width: var(--max-width); margin: 40px auto 0; padding-top: 24px;
  border-top: 1px solid var(--border); 
  font-size: 0.88rem; color: var(--text-muted); text-align: center;
}

/* ===== 工具 ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.empty-state { text-align: center; padding: 60px 24px; color: var(--text-muted); }

/* ===== 响应式 v2.0 ===== */
@media (max-width: 1024px) {
  .hero__title { font-size: 3.5rem; }
  .section { padding: 80px 32px; }
}
@media (max-width: 768px) {
  .navbar { padding: 0 24px; height: 64px; }
  .hero { padding: 100px 24px 60px; }
  .hero__title { font-size: 2.5rem; }
  .hero__subtitle { font-size: 1.1rem; }
  .navbar__links { display: none; }
  .mobile-menu-btn { display: flex !important; }
  .section { padding: 60px 20px; }
  .section__title { font-size: 2rem; }
  .footer { padding: 40px 20px 30px; }
  .footer__inner { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .footer__info p { max-width: none; }
  .footer__links { justify-content: center; }
  .software-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
}
.mobile-menu-btn { display: none; background: none; border: none; color: var(--text-primary); cursor: pointer; padding: 8px; }

/* ===== 移动菜单 ===== */
.mobile-nav {
  display: none; position: fixed; top: 64px; left: 0; right: 0; bottom: 0;
  background: var(--bg-glass); backdrop-filter: blur(20px); z-index: 999; padding: 24px;
}
.mobile-nav.open { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a {
  padding: 14px 20px; border-radius: var(--radius-sm);
  color: var(--text-secondary); font-size: 1rem; font-weight: 500; transition: all var(--transition);
}
.mobile-nav a:hover, .mobile-nav a.active { color: var(--accent); background: var(--accent-dim); }

/* ===== Toast ===== */
.toast-container { position: fixed; top: 80px; right: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 12px; }
.toast {
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: 20px; padding: 16px 24px;
  font-size: 0.92rem; color: var(--text-primary);
  box-shadow: var(--shadow-lg); animation: toastIn 0.3s ease; min-width: 280px;
}
.toast--success { border-left: 4px solid var(--success); }
.toast--error { border-left: 4px solid var(--danger); }
.toast--info { border-left: 4px solid var(--accent); }
@keyframes toastIn { from { opacity:0; transform: translateX(40px); } to { opacity:1; transform: translateX(0); } }

/* ===== 动画辅助 v2.0 ===== */
.fade-in {
  animation: fadeIn 0.8s ease both;
}
@keyframes fadeIn { 
  from { opacity: 0; transform: translateY(30px); } 
  to { opacity: 1; transform: translateY(0); } 
}

.fade-in-delay-1 { animation-delay: 0.15s; }
.fade-in-delay-2 { animation-delay: 0.3s; }
.fade-in-delay-3 { animation-delay: 0.45s; }
.fade-in-delay-4 { animation-delay: 0.6s; }

/* 滚动触发动画 */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}
.scroll-reveal-delay-1 { transition-delay: 0.1s; }
.scroll-reveal-delay-2 { transition-delay: 0.2s; }
.scroll-reveal-delay-3 { transition-delay: 0.3s; }
.scroll-reveal-delay-4 { transition-delay: 0.4s; }

/* 悬停光效 */
.glow-hover {
  transition: box-shadow 0.4s ease, transform 0.4s ease;
}
.glow-hover:hover {
  box-shadow: var(--shadow-accent);
}