/* ===== 奇龙数字园 — 全局样式 ===== */

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-bg-hover: rgba(255, 255, 255, 0.1);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent-blue: #3B82F6;
    --accent-violet: #8B5CF6;
    --accent-gold: #F59E0B;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
}

/* ===== 背景动画光斑 ===== */
.bg-animation {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.3), transparent);
    top: -10%; left: -5%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.25), transparent);
    top: 40%; right: -10%;
    animation-delay: -5s;
}

.orb-3 {
    width: 350px; height: 350px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.2), transparent);
    bottom: -5%; left: 30%;
    animation-delay: -10s;
}

.orb-4 {
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.15), transparent);
    top: 20%; left: 50%;
    animation-delay: -15s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -40px) scale(1.1); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(40px, 10px) scale(1.05); }
}

/* ===== 玻璃效果类 ===== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    background: var(--glass-bg-hover);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
}

.glass-card-subtle {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.glass-card-subtle:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

/* ===== 导航栏 ===== */
.glass-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(10, 14, 26, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo {
    width: 36px; height: 36px;
    border-radius: 10px;
    object-fit: cover;
}

.nav-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #F59E0B, #EF4444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
    transition: width 0.3s;
}

.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }

/* ===== Hero ===== */
.hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
}

.hero-content {
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #10B981;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(135deg, #3B82F6, #8B5CF6, #F59E0B);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.glass-btn {
    display: inline-block;
    padding: 14px 36px;
    font-size: 15px;
    font-weight: 600;
    color: white;
    text-decoration: none;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.glass-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

/* ===== Sections ===== */
.section {
    position: relative;
    z-index: 1;
    padding: 100px 24px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
}

/* ===== 产品卡片 ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.product-card {
    position: relative;
    padding: 40px 32px;
    text-decoration: none;
    color: var(--text-primary);
    overflow: hidden;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.product-glow {
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    opacity: 0;
    transition: opacity 0.5s;
    filter: blur(100px);
}

.product-card:hover .product-glow {
    opacity: 0.08;
}

.product-logo-wrap {
    width: 100px; height: 100px;
    border-radius: 24px;
    overflow: hidden;
    margin-bottom: 24px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.4s;
}

.product-card:hover .product-logo-wrap {
    transform: scale(1.1) rotate(2deg);
}

.product-logo {
    width: 100%; height: 100%;
    object-fit: cover;
}

.product-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.product-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.product-features {
    list-style: none;
    width: 100%;
    text-align: left;
    margin-bottom: 32px;
}

.product-features li {
    padding: 8px 0;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-features li::before {
    content: '✦';
    font-size: 10px;
    color: var(--accent, var(--accent-blue));
}

.product-action {
    margin-top: auto;
}

.product-btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    color: white;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.product-card:hover .product-btn {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    transform: translateY(-2px);
}

/* ===== 特色卡片 ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px 24px;
    text-align: center;
}

.feature-icon {
    font-size: 40px;
    display: block;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== 页脚 ===== */
.footer {
    position: relative;
    z-index: 1;
    padding: 60px 24px 40px;
    text-align: center;
}

.footer-container {
    max-width: 800px;
    margin: 0 auto;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 8px;
}

.footer-logo {
    width: 28px; height: 28px;
    border-radius: 8px;
    object-fit: cover;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    background: linear-gradient(135deg, #F59E0B, #EF4444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.footer-divider {
    width: 60px;
    height: 1px;
    background: var(--glass-border);
    margin: 0 auto 24px;
}

.footer-copyright {
    font-size: 12px;
    color: rgba(148, 163, 184, 0.5);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-title { font-size: 36px; }
    .hero-subtitle { font-size: 15px; }
    .hero-subtitle br { display: none; }
    .products-grid { grid-template-columns: 1fr; gap: 24px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .section { padding: 60px 16px; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
}