/* ========================================================
   HX雲計算 / 五零慧星集團 (50HX) 全局高端科技暗黑毛玻璃樣式庫
   ======================================================== */
:root {
  --bg-primary: #070a13;
  --bg-secondary: #0d1222;
  --bg-card: rgba(15, 23, 42, 0.72);
  --bg-card-hover: rgba(24, 36, 66, 0.85);
  --border-color: rgba(99, 130, 214, 0.16);
  --border-glow: rgba(0, 242, 254, 0.35);
  
  --primary: #00f2fe;
  --secondary: #4facfe;
  --accent-purple: #7928ca;
  --accent-pink: #f72585;
  --accent-green: #00f5a0;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 15%, rgba(0, 242, 254, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 75%, rgba(121, 40, 202, 0.12) 0%, transparent 45%),
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 導航欄 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 10, 19, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent-purple));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1.15rem;
  box-shadow: 0 0 18px rgba(0, 242, 254, 0.4);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-title { font-size: 1.25rem; font-weight: 800; }
.brand-title span {
  background: linear-gradient(135deg, #fff 20%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand-subtitle { font-size: 0.72rem; color: var(--text-dim); font-weight: 500; letter-spacing: 0.5px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-link {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
  position: relative;
  padding: 6px 0;
}
.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent-purple));
  border-radius: 2px;
  box-shadow: 0 0 8px var(--primary);
}

.nav-actions { display: flex; align-items: center; gap: 14px; }

/* 按鈕系統 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  color: #050b17;
  box-shadow: 0 4px 18px rgba(0, 242, 254, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 242, 254, 0.55);
}
.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-color);
  color: var(--text-main);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* 徽章 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.badge-tech {
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--primary);
}
.badge-hot {
  background: rgba(255, 75, 75, 0.15);
  border: 1px solid rgba(255, 75, 75, 0.3);
  color: #ff6b6b;
}

/* 卡片與玻璃擬態 */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.glass-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
}
.glass-card:hover {
  border-color: rgba(0, 242, 254, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
}

/* 英雄區 */
.hero-section {
  padding: 85px 0 60px;
  text-align: center;
  position: relative;
}
.hero-title {
  font-size: 3.3rem;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.18;
  margin: 18px 0;
}
.gradient-text {
  background: linear-gradient(135deg, #00f2fe 10%, #4facfe 50%, #7928ca 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 32px;
}

/* 網格系統 */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* 頁腳 */
.footer {
  margin-top: 100px;
  background: #04070d;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 14px;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 18px;
  color: var(--text-main);
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: var(--text-muted); font-size: 0.9rem; }
.footer-col ul a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
  text-align: center;
  padding-top: 25px;
  border-top: 1px solid rgba(255,255,255,0.06);
  color: var(--text-dim);
  font-size: 0.85rem;
}

@media (max-width: 992px) {
  .hero-title { font-size: 2.6rem; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.1rem; }
  .footer-grid { grid-template-columns: 1fr; }
}