@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    /* --- 核心配色：科技蓝韵 --- */
    --blue-main: #2563eb;
    --blue-dark: #1d4ed8;
    --blue-light: #eff6ff;
    --grad-blue: linear-gradient(135deg, #1e40af, #3b82f6, #06b6d4);

    --bg-white: #ffffff;
    --text-dark: #1f2937;
    --text-gray: #64748b;
    
    --border-light: rgba(229, 231, 235, 0.5);
    /* 将紫色的 RGB (124, 58, 237) 替换为蓝色的 RGB (37, 99, 235) */
    --shadow-blue-rich: 0 10px 30px -5px rgba(37, 99, 235, 0.1), 0 4px 10px -2px rgba(37, 99, 235, 0.05);
    --shadow-hover-rich: 0 25px 50px -10px rgba(37, 99, 235, 0.25), 0 10px 20px -5px rgba(37, 99, 235, 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Inter', sans-serif; 
    background-color: var(--bg-white); 
    color: var(--text-dark); 
    line-height: 1.6; 
    overflow-x: hidden;
    background-image: 
        radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.05) 0px, transparent 50%);
    background-attachment: fixed;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 导航栏 */
.navbar {
    position: fixed; top: 0; width: 100%; padding: 15px 0; z-index: 1000;
    border-bottom: 1px solid var(--border-light);
}
.glass-effect {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.nav-box { display: flex; justify-content: space-between; align-items: center; }
.logo-img { height: 38px; width: auto; display: block; }
.nav-links a { color: var(--text-dark); text-decoration: none; margin-left: 32px; font-weight: 600; transition: 0.3s; }
.nav-links a:hover { color: var(--blue-main); }

.btn-blue {
    padding: 10px 26px; background: var(--grad-blue); color: #fff !important; border-radius: 30px; transition: 0.3s; font-weight: 600;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3); text-decoration: none;
}
.btn-blue:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4); filter: brightness(1.05); }
.btn-blue-outline {
    padding: 10px 26px; border: 2px solid var(--border-light); color: var(--text-dark); border-radius: 30px; text-decoration: none; font-weight: 600; transition: 0.3s;
}
.btn-blue-outline:hover { border-color: var(--blue-main); color: var(--blue-main); background: var(--blue-light); }

/* Hero 区域 */
.hero { padding: 180px 0 140px; position: relative; overflow: hidden; }
.hero-aurora-anim {
    position: absolute; top: -50%; right: -30%; width: 120%; height: 150%;
    background: radial-gradient(circle at center, rgba(37, 99, 235, 0.1) 0%, rgba(6, 182, 212, 0.08) 40%, transparent 70%);
    filter: blur(100px); pointer-events: none; z-index: 0;
    animation: auroraShift 20s infinite alternate ease-in-out;
}
@keyframes auroraShift { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(-5%, 5%) scale(1.1); } }

.hero-flex { display: flex; align-items: center; justify-content: space-between; gap: 70px; position: relative; z-index: 2; }
.hero-text { flex: 1; max-width: 600px; }
.hero-badge {
    display: inline-block; padding: 6px 16px; background: rgba(37, 99, 235, 0.08);
    color: var(--blue-main); font-size: 13px; font-weight: 700; border-radius: 30px; margin-bottom: 25px; letter-spacing: 1px;
}
.hero h1 { font-size: 64px; line-height: 1.15; font-weight: 800; margin-bottom: 25px; color: var(--text-dark); letter-spacing: -1px; }
.text-gradient-blue { background: var(--grad-blue); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero .desc { font-size: 18px; color: var(--text-gray); margin-bottom: 45px; max-width: 520px; }
.hero-btns { display: flex; gap: 16px; }

/* Hero 右侧视觉 */
.hero-visual { flex: 1; display: flex; justify-content: center; position: relative; perspective: 1000px; }
.hero-img-wrap { width: 100%; max-width: 550px; position: relative; z-index: 2; }
/* SVG 基础样式 */
.hive-svg { width: 100%; height: auto; filter: drop-shadow(0 20px 40px rgba(37, 99, 235, 0.15)); }

/* 统计条 */
.stats-section { margin-top: -50px; position: relative; z-index: 10; padding-bottom: 60px; }
.clean-card {
    background: #fff; border: 1px solid var(--border-light);
    box-shadow: var(--shadow-blue-rich); border-radius: 24px;
}
.stats-bar { display: flex; justify-content: space-around; align-items: center; text-align: center; padding: 30px 0; }
.stat-item h3 { font-size: 38px; font-weight: 800; margin-bottom: 5px; color: var(--blue-main); }
.stat-item p { color: var(--text-dark); font-size: 15px; font-weight: 600; }
.stat-divider { width: 1px; height: 40px; background: rgba(0,0,0,0.1); }

/* 通用板块 */
.section-padding { padding: 100px 0; }
.bg-pale-blue { background-color: #f5f8ff; }
.section-title { text-align: center; margin-bottom: 70px; }
.section-title h2 { font-size: 36px; font-weight: 800; color: var(--text-dark); margin-bottom: 15px; }
.section-title p { color: var(--text-gray); font-size: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 35px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }

/* 卡片 */
.blue-card {
    background: #fff; padding: 40px 35px; border-radius: 24px;
    border: 1px solid var(--border-light); transition: all 0.3s ease;
    box-shadow: var(--shadow-blue-rich);
    display: flex; flex-direction: column; align-items: flex-start;
}
.card-center { align-items: center; text-align: center; }
.hover-lift:hover {
    transform: translateY(-12px);
    border-color: rgba(37, 99, 235, 0.1);
    box-shadow: var(--shadow-hover-rich);
}

/* 图标容器 */
.icon-box, .icon-box-sm {
    transition: 0.4s ease; display: flex; align-items: center; justify-content: center;
    background: rgba(37, 99, 235, 0.08); color: var(--blue-main); border-radius: 18px;
}
.icon-box { width: 68px; height: 68px; margin-bottom: 25px; }
.icon-box-sm { width: 60px; height: 60px; margin-bottom: 20px; }
.svg-icon-wrap svg { stroke-width: 1.8; transition: 0.3s; }
.hover-lift:hover .icon-box, .hover-lift:hover .icon-box-sm {
    background: var(--grad-blue); color: #fff; transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.4);
}

.blue-card h3, .blue-card h4 { font-size: 22px; font-weight: 700; color: var(--text-dark); margin-bottom: 15px; }
.blue-card p { color: var(--text-gray); font-size: 15px; line-height: 1.6; }
.cn-desc { color: var(--text-gray); font-size: 15px; line-height: 1.6; }

/* 动效 */
.floating-slow { animation: float 6s ease-in-out infinite; }
.anim-float { animation: float 3s ease-in-out infinite; }
.anim-shake { animation: shake 4s ease-in-out infinite; transform-origin: center; }
.anim-pulse { animation: pulse 3s infinite; transform-origin: center; }
.anim-spin-slow { animation: spin 10s linear infinite; transform-origin: center; }
.anim-launch { animation: launch 3s ease-in-out infinite; }
.anim-float-slow { animation: float 5s ease-in-out infinite; }
.anim-swing { animation: swing 3s ease-in-out infinite; transform-origin: top center; }

@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes shake { 0%, 100% { transform: rotate(0); } 25% { transform: rotate(6deg); } 75% { transform: rotate(-6deg); } }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.12); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes launch { 0%, 100% { transform: translate(0,0); } 50% { transform: translate(4px, -10px); } }
@keyframes swing { 0%, 100% { transform: rotate(0); } 25% { transform: rotate(4deg); } 75% { transform: rotate(-4deg); } }

/* 页脚 */
footer { padding: 80px 0 40px; background: #fff; text-align: center; border-top: 1px solid var(--border-light); }
.footer-logo-img { height: 40px; margin: 0 auto 25px; display: block; }
.footer-info { display: flex; justify-content: center; gap: 20px; margin-bottom: 30px; font-size: 15px; color: var(--text-dark); font-weight: 500; }
.sep { opacity: 0.3; }
.footer-info i { color: var(--blue-main); margin-right: 5px; }
.footer-copyright { padding-top: 30px; color: var(--text-gray); font-size: 14px; border-top: 1px solid var(--border-light); }
.icp { color: var(--text-gray); text-decoration: none; transition: 0.3s; }
.icp:hover { color: var(--blue-main); }

@media (max-width: 900px) {
    .hero-flex { flex-direction: column; text-align: center; }
    .hero-visual { margin-top: 60px; }
    .stats-bar { flex-wrap: wrap; row-gap: 30px; }
    .stat-divider { display: none; }
    .stat-item { width: 45%; }
    .grid-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
    .grid-4 { grid-template-columns: 1fr; }
    .footer-info { flex-direction: column; gap: 10px; } .sep { display: none; }
}