/* 全局重置 */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
 font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
 background-color: #0a0f1a;
 color: #e0e6f0;
 line-height: 1.7;
}

/* 导航栏 */
.navbar {
 position: fixed;
 top: 0;
 width: 100%;
 background: rgba(10, 15, 26, 0.95);
 backdrop-filter: blur(10px);
 display: flex;
 align-items: center;
 justify-content: space-between;
 padding: 0 60px;
 height: 64px;
 z-index: 1000;
 border-bottom: 1px solid rgba(0, 180, 255, 0.1);
}

.nav-logo {
 display: flex;
 flex-direction: column;
 font-size: 18px;
 font-weight: 700;
 color: #00b4ff;
 line-height: 1.2;
}

.logo-cn {
 font-size: 16px;
 color: #00b4ff;
 letter-spacing: 2px;
}

.logo-en {
 font-size: 12px;
 color: rgba(0, 180, 255, 0.6);
 letter-spacing: 1px;
 font-weight: 400;
}

.nav-links {
 display: flex;
 list-style: none;
 gap: 28px;
 align-items: center;
}

.nav-links a {
 color: #c0cce0;
 text-decoration: none;
 font-size: 14px;
 transition: color 0.3s;
}

.nav-links a:hover { color: #00b4ff; }

.lang-switch a {
 display: inline-block;
 padding: 4px 12px;
 background: rgba(0, 180, 255, 0.1);
 border: 1px solid rgba(0, 180, 255, 0.3);
 border-radius: 4px;
 color: #00b4ff !important;
 font-size: 12px !important;
 font-weight: 600;
 transition: all 0.3s;
}

.lang-switch a:hover {
 background: rgba(0, 180, 255, 0.2);
 border-color: #00b4ff;
}

/* 通用 */
.section { padding: 100px 60px; }
.container { max-width: 1200px; margin: 0 auto; }

.section-title {
 font-size: 36px;
 font-weight: 700;
 text-align: center;
 margin-bottom: 60px;
 color: #fff;
 position: relative;
}

.section-title::after {
 content: '';
 display: block;
 width: 60px;
 height: 3px;
 background: #00b4ff;
 margin: 16px auto 0;
}

/* Hero */
.hero {
 height: 100vh;
 display: flex;
 align-items: center;
 justify-content: center;
 position: relative;
 background: linear-gradient(135deg, #0a0f1a 0%, #0d1a2e 50%, #0a1525 100%);
 overflow: hidden;
}

.hero::before {
 content: '';
 position: absolute;
 top: 0; left: 0; right: 0; bottom: 0;
 background: 
  radial-gradient(ellipse at 20% 50%, rgba(0, 180, 255, 0.08) 0%, transparent 50%),
  radial-gradient(ellipse at 80% 50%, rgba(0, 100, 200, 0.06) 0%, transparent 50%);
}

.hero-content {
 text-align: center;
 position: relative;
 z-index: 1;
 padding: 0 40px;
}

.hero-content h1 {
 font-size: 52px;
 font-weight: 800;
 color: #fff;
 margin-bottom: 24px;
 letter-spacing: 4px;
}

.hero-sub {
 font-size: 18px;
 color: #8aa8c8;
 max-width: 700px;
 margin: 0 auto 40px;
 line-height: 1.9;
}

.hero-btn {
 display: inline-block;
 padding: 14px 48px;
 background: #00b4ff;
 color: #0a0f1a;
 font-weight: 600;
 border-radius: 4px;
 text-decoration: none;
 transition: all 0.3s;
}

.hero-btn:hover {
 background: #fff;
 transform: translateY(-2px);
 box-shadow: 0 8px 24px rgba(0, 180, 255, 0.3);
}

/* 关于米能 */
.about { background: #0a0f1a; }
.about-content {
 max-width: 900px;
 margin: 0 auto;
}
.about-content p {
 color: #a0b0c8;
 font-size: 16px;
 line-height: 2;
 margin-bottom: 24px;
 text-align: justify;
}

.cert-list {
 display: flex;
 justify-content: center;
 gap: 20px;
 margin-top: 40px;
 flex-wrap: wrap;
}

.cert-item {
 padding: 8px 20px;
 border: 1px solid rgba(0, 180, 255, 0.3);
 border-radius: 4px;
 font-size: 13px;
 color: #00b4ff;
 background: rgba(0, 180, 255, 0.05);
}

/* 业务范围 */
.services { background: #0d1520; }
.services-grid {
 display: grid;
 grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
 gap: 32px;
}

.service-card {
 background: rgba(255, 255, 255, 0.03);
 border: 1px solid rgba(255, 255, 255, 0.06);
 border-radius: 12px;
 padding: 36px;
 transition: all 0.3s;
}

.service-card:hover {
 border-color: rgba(0, 180, 255, 0.3);
 transform: translateY(-4px);
 box-shadow: 0 12px 40px rgba(0, 180, 255, 0.1);
}

.service-icon {
 font-size: 40px;
 margin-bottom: 20px;
}

.service-card h3 {
 color: #fff;
 font-size: 20px;
 margin-bottom: 16px;
}

.service-card p {
 color: #8090a8;
 font-size: 14px;
 line-height: 1.8;
}

/* 技术能力 */
.tech { background: #0a0f1a; }
.tech-grid {
 display: grid;
 grid-template-columns: repeat(4, 1fr);
 gap: 32px;
}

.tech-item {
 background: rgba(255, 255, 255, 0.02);
 border: 1px solid rgba(0, 180, 255, 0.1);
 border-radius: 12px;
 padding: 32px 24px;
 text-align: center;
 transition: all 0.3s;
}

.tech-item:hover {
 border-color: rgba(0, 180, 255, 0.4);
 background: rgba(0, 180, 255, 0.05);
 transform: translateY(-4px);
}

.tech-num {
 font-size: 48px;
 font-weight: 800;
 color: rgba(0, 180, 255, 0.15);
 margin-bottom: 16px;
 line-height: 1;
}

.tech-item h4 {
 color: #fff;
 font-size: 18px;
 margin-bottom: 12px;
}

.tech-item p {
 color: #607080;
 font-size: 13px;
}

/* 技术能力详情 */
.tech-detail {
 background: rgba(255, 255, 255, 0.02);
 border: 1px solid rgba(0, 180, 255, 0.08);
 border-radius: 12px;
 padding: 40px;
 margin-top: 48px;
}

.tech-detail-title {
 font-size: 20px;
 font-weight: 600;
 color: #fff;
 margin-bottom: 24px;
 text-align: center;
}

.tech-detail-grid {
 display: grid;
 grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
 gap: 12px 32px;
 list-style: none;
 padding: 0;
 margin: 0;
}

.tech-detail-grid li {
 position: relative;
 padding-left: 20px;
 color: #a0b8cc;
 font-size: 14px;
 line-height: 2;
}

.tech-detail-grid li::before {
 content: '✓';
 position: absolute;
 left: 0;
 color: #00b4ff;
 font-weight: 700;
}

.tech-detail-section {
 margin-top: 32px;
 padding-top: 32px;
 border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.tech-detail-section:first-of-type {
 margin-top: 0;
 padding-top: 0;
 border-top: none;
}

.tech-detail-section h5 {
 color: #00b4ff;
 font-size: 16px;
 margin-bottom: 16px;
 font-weight: 600;
}

.tech-sub-intro {
 color: #8090a8;
 font-size: 14px;
 line-height: 1.9;
 text-align: center;
 max-width: 800px;
 margin: 0 auto 32px;
}

/* 联系我们 */
.contact { background: #0d1520; }
.contact-grid {
 max-width: 800px;
 margin: 0 auto;
}

.contact-info {
 background: rgba(255, 255, 255, 0.03);
 border: 1px solid rgba(255, 255, 255, 0.06);
 border-radius: 12px;
 padding: 40px;
}

.contact-item {
 display: flex;
 padding: 16px 0;
 border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.contact-item:last-child { border-bottom: none; }

.contact-label {
 width: 80px;
 color: #00b4ff;
 font-weight: 600;
 flex-shrink: 0;
}

.contact-value {
 color: #a0b8cc;
 }

/* 底部 */
.footer {
 background: #070b12;
 padding: 24px;
 text-align: center;
 color: #405060;
 font-size: 13px;
}

.footer a {
 color: #405060;
 text-decoration: none;
 transition: color 0.3s;
}

.footer a:hover {
 color: #00b4ff;
}

/* 响应式 */
@media (max-width: 1024px) {
 .tech-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
 .navbar { padding: 0 24px; }
 .nav-links { display: none; }
 .section { padding: 60px 24px; }
 .hero-content h1 { font-size: 32px; letter-spacing: 2px; }
 .hero-sub { font-size: 15px; }
 .tech-grid { grid-template-columns: 1fr; }
 .section-title { font-size: 28px; }
}