/* ══════════════════════════════════════════════════
   智矩科技 · 共享设计系统
   版本: v1.0  日期: 2026-06-22
   对标商用级别设计系统
   ══════════════════════════════════════════════════ */

/* ── CSS 变量（全局设计令牌） ── */
:root {
  /* 背景 */
  --bg: #0b0e1a;
  --bg-card: rgba(255,255,255,0.04);
  --bg-glass: rgba(255,255,255,0.03);

  /* 边框 */
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);

  /* 文字 */
  --text: #e0e2ec;
  --text-muted: rgba(255,255,255,0.4);
  --text-bright: #ffffff;

  /* 品牌色板 */
  --p1: #6C5CE7;   /* 紫色主色 */
  --p2: #00CEC9;   /* 青色 */
  --p3: #FD79A8;   /* 粉色 */
  --p4: #FDCB6E;   /* 金色 */
  --p5: #0984E3;   /* 蓝色 */
  --p6: #00B894;   /* 绿色 */
  --p7: #E17055;   /* 橙色 */
  --p8: #A29BFE;   /* 淡紫 */

  /* 发光 */
  --glow: rgba(108,92,231,0.4);
  --glow-2: rgba(0,206,201,0.25);

  /* 布局 */
  --radius: 18px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  /* 字体 */
  --font: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
}

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── 基础 ── */
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

/* ── 星空背景（canvas） ── */
#starfield {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ── 浮动光晕 ── */
.glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.08;
  pointer-events: none;
  z-index: 0;
}
.glow-orb.o1 { width:600px; height:600px; background:var(--p1); top:-200px; left:-200px; }
.glow-orb.o2 { width:500px; height:500px; background:var(--p2); bottom:-200px; right:-150px; }
.glow-orb.o3 { width:400px; height:400px; background:var(--p5); top:50%; left:50%; transform:translate(-50%,-50%); }

/* ── 主容器 ── */
.app {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── ═══════════  导航栏  ═══════════ ── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.navbar .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  text-decoration: none;
  color: var(--text);
}

.navbar .brand:hover {
  color: var(--text-bright);
}

.navbar .nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.navbar .nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.navbar .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--p1);
  transition: width var(--transition);
  border-radius: 2px;
}

.navbar .nav-links a:hover {
  color: var(--text);
}

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

.navbar .nav-links a.active {
  color: var(--p8);
}

/* ── ═══════════  分区标题  ═══════════ ── */
.section-head {
  text-align: center;
  margin: 60px 0 32px;
}

.section-head h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.section-head p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── ═══════════  卡片网格  ═══════════ ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 18px;
  margin-bottom: 20px;
}

/* ── 卡片 ── */
.card {
  position: relative;
  overflow: hidden;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.card .accent-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.card:hover .accent-bar { opacity: 1; }

.card .c-icon { font-size: 36px; margin-bottom: 16px; display: block; }
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.card .c-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; flex: 1; }
.card .c-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.card .c-tags span {
  padding: 3px 10px; border-radius: 10px;
  font-size: 10px; font-weight: 600;
}

.card .c-link-arrow {
  position: absolute;
  bottom: 28px; right: 28px;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover .c-link-arrow { opacity: 1; }

/* 卡片配色变体 */
.card.purple .accent-bar { background: var(--p1); }
.card.purple:hover { box-shadow: 0 20px 60px rgba(108,92,231,0.15); }
.card.purple .c-tags span { background: rgba(108,92,231,0.15); color: #a29bfe; }

.card.teal .accent-bar { background: var(--p2); }
.card.teal:hover { box-shadow: 0 20px 60px rgba(0,206,201,0.15); }
.card.teal .c-tags span { background: rgba(0,206,201,0.15); color: #81ecec; }

.card.pink .accent-bar { background: var(--p3); }
.card.pink:hover { box-shadow: 0 20px 60px rgba(253,121,168,0.15); }
.card.pink .c-tags span { background: rgba(253,121,168,0.15); color: #fab1a0; }

.card.gold .accent-bar { background: var(--p4); }
.card.gold:hover { box-shadow: 0 20px 60px rgba(253,203,110,0.15); }
.card.gold .c-tags span { background: rgba(253,203,110,0.15); color: #ffeaa7; }

.card.blue .accent-bar { background: var(--p5); }
.card.blue:hover { box-shadow: 0 20px 60px rgba(9,132,227,0.15); }
.card.blue .c-tags span { background: rgba(9,132,227,0.15); color: #74b9ff; }

.card.green .accent-bar { background: var(--p6); }
.card.green:hover { box-shadow: 0 20px 60px rgba(0,184,148,0.15); }
.card.green .c-tags span { background: rgba(0,184,148,0.15); color: #55efc4; }

.card.orange .accent-bar { background: var(--p7); }
.card.orange:hover { box-shadow: 0 20px 60px rgba(225,112,85,0.15); }
.card.orange .c-tags span { background: rgba(225,112,85,0.15); color: #fab1a0; }

/* ── ═══════════  CTA 区域  ═══════════ ── */
.cta {
  text-align: center;
  padding: 60px 20px;
  margin: 40px 0;
  background: linear-gradient(135deg, rgba(108,92,231,0.05), rgba(0,206,201,0.05));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.cta h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; }
.cta p { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }

.cta .btn-group {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.cta .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

.cta .btn.primary {
  background: linear-gradient(135deg, var(--p1), #a29bfe);
  border: none;
  color: white;
  box-shadow: 0 8px 30px rgba(108,92,231,0.3);
}

.cta .btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(108,92,231,0.4);
}

.cta .btn.secondary {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text);
}

.cta .btn.secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--border-hover);
}

/* ── ═══════════  页脚  ═══════════ ── */
.footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

.footer .company { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.footer .info { font-size: 11px; color: var(--text-muted); }

.footer .links {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}
.footer .links a {
  color: var(--text-muted);
  font-size: 11px;
  text-decoration: none;
  transition: color 0.2s;
}
.footer .links a:hover { color: var(--text); }

/* ── ═══════════  Toast  ═══════════ ── */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 14px 28px;
  border-radius: 14px;
  background: rgba(0,0,0,0.9);
  backdrop-filter: blur(20px);
  color: white;
  font-size: 13px;
  font-weight: 500;
  z-index: 9999;
  border: 1px solid rgba(255,255,255,0.1);
  pointer-events: none;
  animation: slideInToast 0.3s ease;
}

@keyframes slideInToast {
  from { opacity: 0; transform: translateX(-50%) translateY(-16px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ── ═══════════  滚动驱动动画  ═══════════ ── */
.card {
  animation: cardAppear linear both;
  animation-timeline: view();
  animation-range: entry 5% entry 35%;
}

@keyframes cardAppear {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ── ═══════════  响应式  ═══════════ ── */
.container-type-grid { container-type: inline-size; }

@container (width < 360px) {
  .card { padding: 24px 20px; }
  .card h3 { font-size: 16px; }
  .card .c-icon { font-size: 28px; }
}

@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 12px;
    padding: 16px 0;
  }
  .navbar .nav-links {
    gap: 18px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .grid { grid-template-columns: 1fr; }
  .section-head h2 { font-size: 22px; }
  .cta { padding: 40px 16px; }
  .cta h2 { font-size: 22px; }
  .cta .btn-group { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  .app { padding: 0 16px; }
  .hero-stats { gap: 16px; }
  .footer .links { gap: 12px; }
}

/* ── ═══════════  辅助类  ═══════════ ── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

.text-gradient {
  background: linear-gradient(135deg, var(--p2), var(--p8), var(--p4));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}