/* 重置 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-width: none; height: 100%; }
html::-webkit-scrollbar { display: none; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: #333;
    background: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
main { flex: 1; }

/* 导航 */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.navbar { height: 64px; }
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo-img { height: 38px; }
.logo-text { display: none; }
.navbar-menu { display: flex; list-style: none; gap: 8px; }
.nav-link {
    padding: 8px 14px;
    font-size: 14px;
    color: #555;
    border-radius: 4px;
    transition: all 0.15s;
}
.nav-link:hover, .nav-link.active { color: #2ecc71; background: rgba(46,204,113,0.08); }
.navbar-actions { display: flex; align-items: center; gap: 16px; }
.phone-link { font-size: 13px; color: #666; }
.btn {
    display: inline-block;
    padding: 12px 26px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-primary { background: #2ecc71; color: #fff; }
.btn-primary:hover { background: #27ae60; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(46,204,113,0.3); }
.btn-outline { border: 1px solid rgba(255,255,255,0.4); color: #fff; background: transparent; }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.6); }
.btn-lg { padding: 14px 32px; font-size: 15px; }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.mobile-menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-menu-toggle span { display: block; width: 20px; height: 2px; background: #333; margin: 4px 0; }

/* Section */
.section { display: none; padding: 70px 0; }
.section.active { display: block; }
.section-header { text-align: center; margin-bottom: 45px; margin-top: 45px; }
.section-title { font-size: 26px; font-weight: 600; color: #222; margin-bottom: 10px; }
.section-subtitle { font-size: 14px; color: #888; }

/* Hero */
.hero-section {
    padding-top: 64px;
    background: linear-gradient(145deg, #1a1f2e 0%, #252b3d 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}
.hero-background { display: none; }
.hero-content {
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 60px 0 80px;
}
.hero-text { flex: 1; color: #fff; }
.hero-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(46,204,113,0.15);
    border: 1px solid rgba(46,204,113,0.3);
    border-radius: 20px;
    font-size: 13px;
    color: #2ecc71;
    margin-bottom: 24px;
}
.hero-badge::before { content: "● "; font-size: 8px; }
.hero-title { font-size: 44px; font-weight: 700; line-height: 1.2; margin-bottom: 16px; }
.title-line { display: block; }
.title-line.highlight { color: #2ecc71; }
.hero-subtitle { font-size: 18px; color: rgba(255,255,255,0.75); margin-bottom: 12px; font-weight: 500; }
.hero-description { font-size: 15px; color: rgba(255,255,255,0.5); line-height: 1.9; margin-bottom: 36px; max-width: 480px; }
.hero-actions { display: flex; gap: 14px; margin-bottom: 50px; }
.hero-stats { display: flex; gap: 50px; padding-top: 36px; border-top: 1px solid rgba(255,255,255,0.1); }
.stat-number { font-size: 36px; font-weight: 700; color: #fff; }
.stat-label { font-size: 13px; color: rgba(255,255,255,0.5); margin-top: 6px; }
.hero-visual { flex: 1; max-width: 450px; }
.hero-graphic { position: relative; height: 380px; }
.graphic-element {
    position: absolute;
    border-radius: 16px;
    background: rgba(46,204,113,0.08);
    border: 1px solid rgba(46,204,113,0.15);
}
.graphic-1 { width: 180px; height: 180px; top: 10px; right: 20px; animation: float 5s ease-in-out infinite; }
.graphic-2 { width: 130px; height: 130px; bottom: 30px; left: 30px; animation: float 6s ease-in-out infinite reverse; }
.graphic-3 { width: 90px; height: 90px; top: 140px; right: 0; animation: float 4s ease-in-out infinite; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }


/* 关于我们 */
.about-section { background: #f9fafb; }
.about-content { display: flex; gap: 50px; }
.about-text { flex: 1; }
.intro-paragraph { font-size: 15px; color: #555; line-height: 2; margin-bottom: 28px; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 28px; }
.about-feature {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 16px; background: #fff; border-radius: 10px;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}
.about-feature:hover { box-shadow: 0 6px 20px rgba(0,0,0,0.06); }
.about-feature-icon {
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%); 
    border-radius: 8px; color: #fff; font-size: 15px;
}
.about-feature-text h4 { font-size: 14px; font-weight: 600; color: #222; }
.about-feature-text p { font-size: 12px; color: #888; }
.leader-info {
    padding: 24px; background: #fff; border-radius: 12px; border-left: 4px solid #2ecc71;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}
.leader-info h3 { font-size: 16px; font-weight: 600; margin-bottom: 12px; color: #222; }
.leader-info p { font-size: 14px; color: #555; line-height: 1.9; }
.leader-info strong { color: #2ecc71; font-weight: 600; }
.about-visual { width: 320px; display: flex; flex-direction: column; gap: 14px; }
.about-card {
    padding: 22px; background: #fff; border-radius: 12px;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}
.about-card:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.08); transform: translateY(-2px); }
.about-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.about-card-icon {
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%); 
    border-radius: 10px; color: #fff; font-size: 15px;
}
.about-card-title { font-size: 13px; color: #888; }
.about-card-value { font-size: 26px; font-weight: 700; color: #2ecc71; }
.about-card-label { font-size: 12px; color: #999; margin-top: 2px; }

/* 服务 */
.services-section { background: #fff; }
.service-block { margin-bottom: 60px; }
.service-block:last-child { margin-bottom: 0; }
.block-header { text-align: center; margin-bottom: 40px; }
.block-title { font-size: 22px; font-weight: 600; margin-bottom: 10px; color: #222; }
.block-description { font-size: 14px; color: #888; }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.service-card {
    padding: 28px 22px; background: #f9fafb; border-radius: 12px;
    transition: all 0.2s;
}
.service-card:hover { 
    background: #fff;
    transform: translateY(-4px); 
    box-shadow: 0 12px 40px rgba(0,0,0,0.08); 
}
.card-icon { margin-bottom: 18px; }
.icon-number {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; 
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%); 
    color: #fff;
    border-radius: 10px; font-size: 15px; font-weight: 600;
    box-shadow: 0 4px 12px rgba(46,204,113,0.25);
}
.card-title { font-size: 15px; font-weight: 600; color: #222; margin-bottom: 10px; line-height: 1.5; }
.card-description { font-size: 13px; color: #666; line-height: 1.8; }

/* 案例 */
.cases-section { background: #f9fafb; }
.cases-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.case-card {
    background: #fff; border-radius: 12px;
    overflow: hidden; transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.case-card:hover { box-shadow: 0 12px 40px rgba(0,0,0,0.1); transform: translateY(-4px); }
.case-header { padding: 28px; background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%); color: #fff; }
.case-title { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.case-tagline { font-size: 13px; color: rgba(255,255,255,0.8); line-height: 1.7; }
.case-body { padding: 24px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; }
.case-info h4, .case-result h4 {
    font-size: 13px; font-weight: 600; margin-bottom: 12px;
    display: flex; align-items: center; gap: 6px;
}
.case-info h4::before { content: ''; width: 3px; height: 12px; background: #2ecc71; border-radius: 2px; }
.case-flow {
    display: inline-block; padding: 4px 10px; background: rgba(46,204,113,0.1);
    border-radius: 4px; font-size: 12px; font-weight: 500; color: #2ecc71; margin-bottom: 12px;
}
.case-features { list-style: none; }
.case-features li {
    position: relative; padding-left: 20px; margin-bottom: 7px;
    font-size: 12px; color: #666;
}
.case-features li::before {
    content: '✓'; position: absolute; left: 0; top: 0;
    width: 14px; height: 14px; background: #2ecc71; color: #fff;
    border-radius: 50%; font-size: 9px;
    display: flex; align-items: center; justify-content: center;
}
.case-result {
    padding: 16px; background: #f9fafb; border-radius: 6px; border-left: 3px solid #2ecc71;
}
.case-result h4::before { background: #2ecc71; }
.case-result p { font-size: 12px; color: #666; line-height: 1.7; }

/* 联系 */
.contact-section { background: #fff; }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 850px; margin: 0 auto; }
.contact-card {
    padding: 32px 24px; background: #f9fafb; border-radius: 12px;
    text-align: center; transition: all 0.2s;
}
.contact-card:hover { 
    background: #fff;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08); 
    transform: translateY(-4px);
}
.contact-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 56px; height: 56px; 
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%); 
    border-radius: 14px;
    color: #fff; margin-bottom: 18px;
    box-shadow: 0 4px 15px rgba(46,204,113,0.3);
}
.contact-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; color: #222; }
.contact-card p { font-size: 13px; color: #666; line-height: 1.8; }
.contact-card a { color: #2ecc71; font-weight: 600; }
.contact-card a:hover { text-decoration: underline; }

/* 页脚 */
.footer { background: #222; color: rgba(255,255,255,0.6); padding: 28px 0; text-align: center; }
.footer p { font-size: 13px; margin: 0; }
.footer .icp { margin-top: 8px; }
.footer .icp a { color: rgba(255,255,255,0.4); transition: color 0.2s; }
.footer .icp a:hover { color: rgba(255,255,255,0.8); }

/* 响应式 */
@media (max-width: 900px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .mobile-menu-toggle { display: block; }
    .navbar-menu {
        position: fixed; top: 64px; left: 0; right: 0;
        background: #fff; flex-direction: column; padding: 16px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.08);
        transform: translateY(-120%); opacity: 0; transition: all 0.2s;
    }
    .navbar-menu.active { transform: translateY(0); opacity: 1; }
    .navbar-actions { display: none; }
    .hero-content { flex-direction: column; text-align: center; padding: 40px 0; }
    .hero-visual { display: none; }
    .hero-title { font-size: 28px; }
    .hero-description { margin: 0 auto 28px; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .about-content { flex-direction: column; }
    .about-visual { width: 100%; flex-direction: row; flex-wrap: wrap; }
    .about-card { flex: 1; min-width: 140px; }
    .about-features { grid-template-columns: 1fr; }
    .services-grid, .cases-grid, .contact-grid { grid-template-columns: 1fr; }
    .case-body { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .hero-title { font-size: 24px; }
    .hero-stats { flex-direction: column; gap: 16px; }
    .section { padding: 50px 0; }
    .section-title { font-size: 22px; }
}