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

:root {
    --bolo-blue: #1a6fb5;
    --bolo-light: #e8f2fc;
    --bolo-lighter: #f5f9ff;
    --bolo-accent: #3d9be9;
    --bolo-dark: #0d2b45;
    --text-body: #3a4a5c;
    --text-muted: #7a8a9c;
    --white: #ffffff;
    --shadow-sm: 0 2px 12px rgba(26, 111, 181, 0.06);
    --shadow-md: 0 8px 28px rgba(26, 111, 181, 0.10);
    --shadow-lg: 0 16px 40px rgba(26, 111, 181, 0.14);
}

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--white);
    color: var(--text-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: color 0.2s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; border-radius: 40px;
    font-weight: 600; font-size: 0.95rem;
    cursor: pointer; border: none;
    transition: all 0.25s ease; font-family: inherit;
}
.btn-primary {
    background: linear-gradient(135deg, var(--bolo-blue), var(--bolo-accent));
    color: white; box-shadow: 0 6px 18px rgba(26, 111, 181, 0.30);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(26, 111, 181, 0.40); }
.btn-outline {
    background: transparent; border: 1.5px solid var(--bolo-blue); color: var(--bolo-blue);
}
.btn-outline:hover { background: var(--bolo-light); }

.navbar {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(26, 111, 181, 0.10);
    padding: 16px 0; position: sticky; top: 0; z-index: 1000;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon {
    width: 46px; height: 46px;
    background: linear-gradient(135deg, var(--bolo-blue), var(--bolo-accent));
    border-radius: 12px; display: flex; align-items: center; justify-content: center;
    color: white; font-weight: 800; font-size: 20px;
    box-shadow: 0 6px 16px rgba(26, 111, 181, 0.28);
}
.logo-text { font-weight: 800; font-size: 1.45rem; color: var(--bolo-dark); letter-spacing: -0.3px; }
.logo-text span {
    color: var(--bolo-accent); font-weight: 600; font-size: 0.8rem;
    display: block; letter-spacing: 2px; margin-top: -2px;
}

.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links a {
    font-weight: 500; font-size: 0.95rem; color: var(--bolo-dark);
    position: relative; padding: 6px 0;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 0; height: 2px; background: var(--bolo-accent);
    transition: width 0.3s ease; border-radius: 2px;
}
.nav-links a:hover { color: var(--bolo-blue); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--bolo-blue); font-weight: 600; }
.nav-links a.active::after { width: 100%; }

.nav-contact { display: flex; align-items: center; gap: 8px; font-weight: 600; color: var(--bolo-blue); font-size: 0.9rem; }

.hamburger {
    display: none; flex-direction: column; justify-content: center; gap: 5px;
    width: 42px; height: 42px; background: transparent; border: none;
    cursor: pointer; padding: 8px; border-radius: 10px;
}
.hamburger span {
    display: block; width: 100%; height: 2.5px; background: var(--bolo-blue);
    border-radius: 2px; transition: transform 0.3s, opacity 0.3s; transform-origin: center;
}
.hamburger.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.mobile-menu {
    display: none; background: white;
    border-top: 1px solid rgba(26, 111, 181, 0.08);
    box-shadow: 0 12px 24px rgba(26, 111, 181, 0.10);
    padding: 0 24px; max-height: 0; overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
}
.mobile-menu.open { max-height: 520px; padding: 16px 24px 24px; }
.mobile-menu ul { display: flex; flex-direction: column; gap: 4px; }
.mobile-menu ul li a {
    display: block; padding: 12px 8px; font-weight: 500;
    color: var(--bolo-dark); border-radius: 10px;
}
.mobile-menu ul li a:hover, .mobile-menu ul li a.active {
    background: var(--bolo-light); color: var(--bolo-blue);
}
.mobile-menu-contact {
    margin-top: 16px; padding-top: 16px;
    border-top: 1px solid rgba(26, 111, 181, 0.08);
    font-size: 0.9rem; color: var(--bolo-blue); font-weight: 600;
}

.hero {
    background: linear-gradient(135deg, #f5f9ff 0%, #e8f2fc 100%);
    padding: 80px 0 90px; position: relative; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; top: -120px; right: -120px;
    width: 420px; height: 420px;
    background: radial-gradient(circle, rgba(61, 155, 233, 0.12) 0%, transparent 70%);
    border-radius: 50%;
}
.hero .container { display: flex; align-items: center; gap: 60px; position: relative; z-index: 1; }
.hero-content { flex: 1.1; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: white; color: var(--bolo-blue); font-weight: 600; font-size: 0.85rem;
    padding: 8px 18px; border-radius: 50px; margin-bottom: 24px;
    box-shadow: var(--shadow-sm); border: 1px solid rgba(26, 111, 181, 0.10);
}
.hero-badge::before {
    content: ''; width: 8px; height: 8px; background: var(--bolo-accent);
    border-radius: 50%; box-shadow: 0 0 8px var(--bolo-accent);
}
.hero-title {
    font-size: 3rem; font-weight: 800; line-height: 1.2;
    color: var(--bolo-dark); letter-spacing: -0.02em; margin-bottom: 24px;
}
.hero-title .highlight {
    background: linear-gradient(to right, var(--bolo-blue), var(--bolo-accent));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-desc { font-size: 1.08rem; color: var(--text-body); max-width: 540px; margin-bottom: 36px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual {
    flex: 0.9;
    background: linear-gradient(145deg, #1a6fb5 0%, #0d4a7a 100%);
    border-radius: 32px; padding: 40px 32px; color: white;
    box-shadow: var(--shadow-lg); position: relative; overflow: hidden; min-height: 320px;
}
.hero-visual::after {
    content: ''; position: absolute; bottom: -60px; right: -60px;
    width: 240px; height: 240px;
    background: radial-gradient(circle, rgba(255,255,255,0.10) 0%, transparent 70%);
    border-radius: 50%;
}
.hero-visual-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 24px; }
.hero-chip-list { display: flex; flex-direction: column; gap: 14px; }
.hero-chip {
    display: flex; align-items: center; gap: 14px;
    background: rgba(255, 255, 255, 0.10); backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 14px; padding: 14px 18px;
}
.hero-chip-icon {
    width: 40px; height: 40px;
    background: rgba(255, 255, 255, 0.15); border-radius: 10px;
    display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.hero-chip-text { font-weight: 600; font-size: 0.95rem; }
.hero-chip-sub { font-size: 0.8rem; opacity: 0.75; margin-top: 2px; }

.section { padding: 80px 0; }
.section-alt { background: var(--bolo-lighter); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
    display: inline-block; font-weight: 600; color: var(--bolo-accent);
    letter-spacing: 2px; font-size: 0.8rem; margin-bottom: 12px;
}
.section-title {
    font-size: 2.2rem; font-weight: 800; color: var(--bolo-dark);
    letter-spacing: -0.02em; margin-bottom: 12px;
}
.section-sub { color: var(--text-muted); max-width: 620px; margin: 0 auto; font-size: 1.02rem; }

.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.card {
    background: white; border-radius: 24px; padding: 36px 30px;
    box-shadow: var(--shadow-sm); border: 1px solid rgba(26, 111, 181, 0.06);
    transition: all 0.3s ease; display: flex; flex-direction: column;
}
.card:hover {
    transform: translateY(-6px); box-shadow: var(--shadow-md);
    border-color: rgba(61, 155, 233, 0.25);
}
.card-icon {
    width: 60px; height: 60px; background: var(--bolo-light);
    border-radius: 18px; display: flex; align-items: center; justify-content: center;
    font-size: 28px; color: var(--bolo-blue); margin-bottom: 24px;
}
.card-title { font-size: 1.25rem; font-weight: 700; color: var(--bolo-dark); margin-bottom: 12px; }
.card-desc { font-size: 0.95rem; color: var(--text-body); line-height: 1.7; margin-bottom: 20px; flex: 1; }
.card-link {
    font-weight: 600; color: var(--bolo-accent); font-size: 0.9rem;
    display: inline-flex; align-items: center; gap: 6px; transition: gap 0.2s;
}
.card-link:hover { gap: 12px; }

.stats {
    background: linear-gradient(135deg, #1a6fb5 0%, #0d4a7a 100%);
    border-radius: 32px; padding: 56px 48px;
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 32px; color: white; margin: 0 24px; box-shadow: var(--shadow-lg);
}
.stat-item { text-align: center; }
.stat-number { font-size: 2.6rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 6px; }
.stat-label { font-size: 0.9rem; opacity: 0.85; }

.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 28px; }
.product-card {
    background: white; border-radius: 20px; overflow: hidden;
    box-shadow: var(--shadow-sm); border: 1px solid rgba(26, 111, 181, 0.06);
    transition: all 0.3s ease;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.product-image {
    height: 180px; background: linear-gradient(135deg, var(--bolo-light), #d0e6fa);
    display: flex; align-items: center; justify-content: center;
    font-size: 56px; color: var(--bolo-blue); position: relative;
}
.product-tag {
    position: absolute; top: 16px; left: 16px;
    background: var(--bolo-blue); color: white; font-size: 0.75rem;
    font-weight: 600; padding: 4px 12px; border-radius: 20px;
}
.product-info { padding: 24px; }
.product-name { font-size: 1.15rem; font-weight: 700; color: var(--bolo-dark); margin-bottom: 8px; }
.product-brand { font-size: 0.85rem; color: var(--bolo-accent); font-weight: 600; margin-bottom: 12px; }
.product-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-content h3 { font-size: 1.8rem; font-weight: 800; color: var(--bolo-dark); margin-bottom: 20px; }
.about-content p { color: var(--text-body); line-height: 1.8; margin-bottom: 16px; font-size: 1rem; }
.about-features { margin-top: 28px; display: flex; flex-direction: column; gap: 16px; }
.about-feature { display: flex; align-items: flex-start; gap: 14px; }
.about-feature-icon {
    width: 36px; height: 36px; background: var(--bolo-light);
    border-radius: 10px; display: flex; align-items: center; justify-content: center;
    color: var(--bolo-blue); font-weight: 700; flex-shrink: 0;
}
.about-feature-text strong { display: block; color: var(--bolo-dark); font-size: 0.98rem; margin-bottom: 4px; }
.about-feature-text span { font-size: 0.88rem; color: var(--text-muted); }

.about-visual {
    background: linear-gradient(145deg, #f5f9ff, #e8f2fc);
    border-radius: 28px; padding: 48px 36px;
    border: 1px solid rgba(26, 111, 181, 0.08);
    position: relative; overflow: hidden;
}
.about-visual::before {
    content: ''; position: absolute; top: -40px; right: -40px;
    width: 160px; height: 160px;
    background: radial-gradient(circle, rgba(61, 155, 233, 0.15), transparent 70%);
    border-radius: 50%;
}
.about-visual-title {
    font-size: 1.2rem; font-weight: 700; color: var(--bolo-blue);
    margin-bottom: 24px; position: relative;
}
.about-visual-list { display: flex; flex-direction: column; gap: 18px; position: relative; }
.about-visual-item {
    display: flex; gap: 16px; align-items: center;
    background: white; padding: 16px 18px; border-radius: 14px; box-shadow: var(--shadow-sm);
}
.about-visual-item-icon {
    width: 44px; height: 44px; background: var(--bolo-light);
    border-radius: 12px; display: flex; align-items: center; justify-content: center;
    font-size: 20px; flex-shrink: 0;
}
.about-visual-item-text strong { display: block; color: var(--bolo-dark); font-size: 0.95rem; margin-bottom: 2px; }
.about-visual-item-text span { font-size: 0.82rem; color: var(--text-muted); }

.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-item {
    display: flex; gap: 18px; align-items: flex-start;
    background: white; padding: 24px; border-radius: 18px;
    box-shadow: var(--shadow-sm); border: 1px solid rgba(26, 111, 181, 0.06);
    transition: all 0.3s ease;
}
.contact-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.contact-item-icon {
    width: 48px; height: 48px; background: var(--bolo-light);
    border-radius: 14px; display: flex; align-items: center; justify-content: center;
    font-size: 22px; color: var(--bolo-blue); flex-shrink: 0;
}
.contact-item-text h4 { font-size: 0.95rem; color: var(--bolo-dark); margin-bottom: 4px; }
.contact-item-text p { font-size: 0.95rem; color: var(--text-body); font-weight: 500; }
.contact-item-text a { color: var(--bolo-blue); }
.contact-item-text a:hover { color: var(--bolo-accent); }

.contact-form {
    background: white; padding: 40px 36px; border-radius: 24px;
    box-shadow: var(--shadow-md); border: 1px solid rgba(26, 111, 181, 0.06);
}
.contact-form h3 { font-size: 1.4rem; font-weight: 700; color: var(--bolo-dark); margin-bottom: 8px; }
.contact-form > p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 28px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--bolo-dark); margin-bottom: 8px; }
.form-group input, .form-group textarea {
    width: 100%; padding: 12px 16px;
    border: 1.5px solid rgba(26, 111, 181, 0.15);
    border-radius: 12px; font-family: inherit; font-size: 0.95rem;
    color: var(--bolo-dark); background: var(--bolo-lighter);
    transition: all 0.2s; outline: none;
}
.form-group input:focus, .form-group textarea:focus {
    border-color: var(--bolo-accent); background: white;
    box-shadow: 0 0 0 4px rgba(61, 155, 233, 0.10);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.page-header {
    background: linear-gradient(135deg, #e8f2fc 0%, #d0e6fa 100%);
    padding: 60px 0; text-align: center;
    position: relative; overflow: hidden;
}
.page-header::before {
    content: ''; position: absolute; top: -80px; right: -80px;
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(61, 155, 233, 0.15), transparent 70%);
    border-radius: 50%;
}
.page-header h1 { font-size: 2.4rem; font-weight: 800; color: var(--bolo-dark); margin-bottom: 12px; position: relative; }
.page-header p { color: var(--bolo-blue); font-size: 1rem; position: relative; }

.footer { background: var(--bolo-dark); color: #a8bdd4; padding: 56px 0 28px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.3fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo-text { color: white; margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.8; color: #8fa8c4; max-width: 300px; }
.footer-col h4 { color: white; font-size: 1rem; font-weight: 600; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 12px; font-size: 0.9rem; }
.footer-col ul li a { color: #a8bdd4; transition: color 0.2s; }
.footer-col ul li a:hover { color: white; }
.footer-contact-item { display: flex; gap: 10px; margin-bottom: 14px; font-size: 0.9rem; color: #a8bdd4; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.10);
    padding-top: 24px; display: flex; justify-content: space-between;
    align-items: center; font-size: 0.85rem; color: #7a94b0;
}

@media (max-width: 1024px) {
    .hero-title { font-size: 2.4rem; }
    .hero .container { flex-direction: column; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links, .nav-contact { display: none; }
    .hamburger { display: flex; }
    .mobile-menu { display: block; }
    .hero { padding: 50px 0 60px; }
    .hero-title { font-size: 1.9rem; }
    .hero-desc { font-size: 1rem; }
    .section { padding: 56px 0; }
    .section-title { font-size: 1.7rem; }
    .stats { grid-template-columns: 1fr 1fr; padding: 40px 24px; margin: 0 16px; }
    .stat-number { font-size: 2rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .contact-form { padding: 28px 22px; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-title { font-size: 1.6rem; }
    .stats { grid-template-columns: 1fr; }
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons .btn { width: 100%; justify-content: center; }
}