/* ===== 全局变量 ===== */
:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --accent: #7b2dff;
    --accent-light: #a855f7;
    --bg-dark: #0a0a0f;
    --bg-card: #111118;
    --bg-card-hover: #1a1a24;
    --bg-elevated: #15151e;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    --border: #1f1f2e;
    --border-light: #2a2a3e;
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7b2dff 100%);
    --gradient-glow: linear-gradient(135deg, rgba(0,212,255,0.15) 0%, rgba(123,45,255,0.15) 100%);
    --shadow-glow: 0 0 40px rgba(0,212,255,0.15);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark); color: var(--text-primary);
    line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

#particles-canvas {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0; pointer-events: none;
}

.navbar {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    padding: 0 60px; height: 70px; display: flex; align-items: center;
    justify-content: space-between;
    background: rgba(10, 10, 15, 0.8); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border); transition: var(--transition);
}
.navbar.scrolled { background: rgba(10, 10, 15, 0.95); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }

.logo { display: flex; align-items: center; gap: 12px; font-size: 1.3rem; font-weight: 700; letter-spacing: 1px; }
.logo-icon {
    width: 40px; height: 40px; background: var(--gradient-primary);
    border-radius: 10px; display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; color: white;
}
.logo-text {
    background: var(--gradient-primary); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}

.nav-links { display: flex; gap: 40px; }
.nav-links a {
    font-size: 0.9rem; font-weight: 500; color: var(--text-secondary);
    position: relative; padding: 5px 0;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
    background: var(--gradient-primary); transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-cta {
    padding: 10px 28px; background: var(--gradient-primary); border-radius: 8px;
    font-size: 0.85rem; font-weight: 600; color: white; border: none;
    cursor: pointer; transition: var(--transition);
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }

.mobile-menu-btn { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 5px; }
.mobile-menu-btn span { display: block; width: 24px; height: 2px; background: var(--text-primary); transition: var(--transition); }

.hero {
    position: relative; min-height: 100vh; display: flex; align-items: center;
    justify-content: center; overflow: hidden; padding-top: 70px;
}
.hero-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0,212,255,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(123,45,255,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 100%, rgba(0,212,255,0.05) 0%, transparent 50%);
}
.hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 900px; padding: 0 20px; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px;
    background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.2);
    border-radius: 50px; font-size: 0.85rem; color: var(--primary); margin-bottom: 30px;
}
.hero-badge .dot { width: 8px; height: 8px; background: var(--primary); border-radius: 50%; animation: pulse 2s infinite; }
.hero-title { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; line-height: 1.1; margin-bottom: 24px; }
.hero-title .gradient-text {
    background: var(--gradient-primary); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle { font-size: clamp(1rem, 2vw, 1.25rem); color: var(--text-secondary); max-width: 600px; margin: 0 auto 40px; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn-primary {
    padding: 14px 36px; background: var(--gradient-primary); border-radius: 10px;
    font-size: 1rem; font-weight: 600; color: white; border: none; cursor: pointer;
    transition: var(--transition); display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-glow); }
.btn-secondary {
    padding: 14px 36px; background: transparent; border: 1px solid var(--border-light);
    border-radius: 10px; font-size: 1rem; font-weight: 600; color: var(--text-primary);
    cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px;
}
.btn-secondary:hover { border-color: var(--primary); background: rgba(0,212,255,0.05); }

.hero-ring {
    position: absolute; border: 1px solid rgba(0,212,255,0.1); border-radius: 50%;
    animation: rotate 20s linear infinite;
}
.hero-ring:nth-child(1) { width: 400px; height: 400px; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.hero-ring:nth-child(2) { width: 600px; height: 600px; top: 50%; left: 50%; transform: translate(-50%, -50%); animation-direction: reverse; animation-duration: 30s; }

.data-bar { position: relative; z-index: 2; background: var(--bg-card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 40px 0; }
.data-bar-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.data-item { text-align: center; position: relative; }
.data-item:not(:last-child)::after {
    content: ''; position: absolute; right: -20px; top: 50%; transform: translateY(-50%);
    width: 1px; height: 50px; background: var(--border);
}
.data-number { font-size: 2.5rem; font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; }
.data-label { font-size: 0.85rem; color: var(--text-secondary); margin-top: 8px; }

.section { position: relative; z-index: 2; padding: 100px 0; }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 60px; padding: 0 20px; }
.section-tag {
    display: inline-block; padding: 6px 16px; background: rgba(0,212,255,0.1);
    border: 1px solid rgba(0,212,255,0.2); border-radius: 50px;
    font-size: 0.8rem; color: var(--primary); margin-bottom: 16px;
    text-transform: uppercase; letter-spacing: 2px;
}
.section-title { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; margin-bottom: 16px; line-height: 1.2; }
.section-desc { font-size: 1rem; color: var(--text-secondary); line-height: 1.8; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
    padding: 40px 30px; transition: var(--transition); position: relative; overflow: hidden;
}
.service-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
    background: var(--gradient-primary); transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.service-card:hover { transform: translateY(-8px); border-color: var(--border-light); box-shadow: var(--shadow-card); background: var(--bg-card-hover); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
    width: 56px; height: 56px; background: var(--gradient-glow); border-radius: 14px;
    display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
    margin-bottom: 24px; border: 1px solid rgba(0,212,255,0.1);
}
.service-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 12px; }
.service-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

.solutions-section { background: var(--bg-elevated); }
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.solution-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; overflow: hidden; transition: var(--transition); }
.solution-card:hover { transform: translateY(-6px); border-color: var(--primary); box-shadow: 0 20px 60px rgba(0,212,255,0.1); }
.solution-img {
    height: 200px; background: var(--gradient-glow); display: flex;
    align-items: center; justify-content: center; font-size: 3rem; position: relative; overflow: hidden;
}
.solution-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to bottom, transparent 50%, var(--bg-card) 100%); }
.solution-content { padding: 30px; }
.solution-content h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 10px; }
.solution-content p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }
.solution-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.solution-tag { padding: 4px 12px; background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.15); border-radius: 20px; font-size: 0.75rem; color: var(--primary); }

.tech-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.tech-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 40px; display: flex; gap: 24px; transition: var(--transition); }
.tech-card:hover { border-color: var(--primary); background: var(--bg-card-hover); }
.tech-icon { width: 60px; height: 60px; min-width: 60px; background: var(--gradient-glow); border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; border: 1px solid rgba(0,212,255,0.1); }
.tech-info h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; }
.tech-info p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }
.tech-highlight { display: inline-block; margin-top: 12px; padding: 4px 14px; background: rgba(0,212,255,0.1); border-radius: 6px; font-size: 0.85rem; color: var(--primary); font-weight: 600; }

.clients-section { background: var(--bg-elevated); }
.clients-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; margin-bottom: 60px; }
.client-logo { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; height: 80px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; font-weight: 700; color: var(--text-secondary); transition: var(--transition); cursor: pointer; }
.client-logo:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-4px); box-shadow: 0 10px 30px rgba(0,212,255,0.1); }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-visual-inner { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 40px; position: relative; overflow: hidden; }
.about-visual-inner::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(0,212,255,0.05) 0%, transparent 60%); animation: rotate 30s linear infinite; }
.about-visual-content { position: relative; z-index: 1; }
.about-visual-content h3 { font-size: 1.5rem; margin-bottom: 20px; }
.timeline-item { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 20px; }
.timeline-dot { width: 12px; height: 12px; min-width: 12px; background: var(--gradient-primary); border-radius: 50%; margin-top: 6px; position: relative; }
.timeline-dot::after { content: ''; position: absolute; top: 12px; left: 50%; transform: translateX(-50%); width: 2px; height: 40px; background: var(--border); }
.timeline-item:last-child .timeline-dot::after { display: none; }
.timeline-content h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.timeline-content p { font-size: 0.85rem; color: var(--text-secondary); }
.about-text h2 { font-size: 2.2rem; font-weight: 700; margin-bottom: 20px; line-height: 1.3; }
.about-text > p { color: var(--text-secondary); margin-bottom: 30px; line-height: 1.8; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.about-feature { display: flex; gap: 12px; align-items: flex-start; }
.about-feature-icon { width: 40px; height: 40px; min-width: 40px; background: var(--gradient-glow); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1rem; }
.about-feature h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.about-feature p { font-size: 0.8rem; color: var(--text-secondary); }

.cta-section { position: relative; padding: 100px 0; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; background: var(--gradient-glow); }
.cta-content { position: relative; z-index: 2; text-align: center; max-width: 700px; margin: 0 auto; padding: 0 20px; }
.cta-content h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; margin-bottom: 20px; }
.cta-content p { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 40px; }

.footer { background: var(--bg-elevated); border-top: 1px solid var(--border); padding: 60px 0 30px; position: relative; z-index: 2; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a { width: 40px; height: 40px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1rem; transition: var(--transition); }
.footer-social a:hover { background: var(--gradient-primary); border-color: transparent; transform: translateY(-3px); }
.footer-col h4 { font-size: 1rem; font-weight: 600; margin-bottom: 20px; color: var(--text-primary); }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 0.9rem; color: var(--text-secondary); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 30px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }
.footer-bottom p { font-size: 0.85rem; color: var(--text-muted); }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes rotate { from { transform: translate(-50%, -50%) rotate(0deg); } to { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-20px); } }
@keyframes spin { to { transform: rotate(360deg); } }

.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

.page-transition { position: fixed; inset: 0; background: var(--bg-dark); z-index: 9999; display: flex; align-items: center; justify-content: center; transition: opacity 0.5s ease; }
.page-transition.hidden { opacity: 0; pointer-events: none; }
.loader { width: 48px; height: 48px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite; }

/* ===== 子页面通用 ===== */
.page-hero { padding-top: 140px; padding-bottom: 60px; text-align: center; }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; margin-bottom: 16px; }
.page-hero p { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto; }

/* ===== 服务页面 ===== */
.service-detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.service-detail-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 40px; transition: var(--transition); }
.service-detail-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.icon-large { width: 70px; height: 70px; background: var(--gradient-glow); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 2rem; margin-bottom: 24px; border: 1px solid rgba(0,212,255,0.1); }
.service-detail-card h3 { font-size: 1.4rem; font-weight: 600; margin-bottom: 12px; }
.service-detail-card p { color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }
.service-features-list { display: flex; flex-direction: column; gap: 10px; }
.service-features-list li { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; color: var(--text-secondary); }
.service-features-list li::before { content: '✓'; color: var(--primary); font-weight: 700; }

/* ===== 解决方案页面 ===== */
.solution-category { margin-bottom: 80px; }
.solution-category-header { display: flex; align-items: center; gap: 16px; margin-bottom: 30px; }
.solution-category-header .icon { width: 50px; height: 50px; background: var(--gradient-glow); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; }
.solution-category-header h3 { font-size: 1.5rem; font-weight: 600; }
.solution-category-header p { color: var(--text-secondary); font-size: 0.9rem; }

/* ===== 关于页面 ===== */
.about-values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 60px; }
.about-value-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 40px 30px; text-align: center; transition: var(--transition); }
.about-value-card:hover { border-color: var(--primary); transform: translateY(-6px); }
.value-icon { width: 60px; height: 60px; background: var(--gradient-glow); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin: 0 auto 20px; }
.about-value-card h4 { font-size: 1.2rem; font-weight: 600; margin-bottom: 10px; }
.about-value-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--gradient-primary); }
.timeline-node { position: relative; padding-bottom: 50px; }
.timeline-node:last-child { padding-bottom: 0; }
.timeline-node::before { content: ''; position: absolute; left: -36px; top: 4px; width: 14px; height: 14px; background: var(--bg-dark); border: 3px solid var(--primary); border-radius: 50%; }
.timeline-year { font-size: 0.85rem; color: var(--primary); font-weight: 600; margin-bottom: 8px; }
.timeline-title { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; }
.timeline-desc { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

/* ===== 案例页面 ===== */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.case-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; overflow: hidden; transition: var(--transition); }
.case-card:hover { border-color: var(--primary); transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,212,255,0.1); }
.case-card-img { height: 180px; background: var(--gradient-glow); display: flex; align-items: center; justify-content: center; font-size: 2.5rem; }
.case-card-content { padding: 30px; }
.case-card-content h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 10px; }
.case-card-content p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.case-card-stats { display: flex; gap: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.case-stat { text-align: center; }
.case-stat-value { font-size: 1.3rem; font-weight: 700; color: var(--primary); }
.case-stat-label { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }

/* ===== 联系页面 ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact-info-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 40px; }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 30px; }
.contact-info-item:last-child { margin-bottom: 0; }
.contact-info-icon { width: 50px; height: 50px; min-width: 50px; background: var(--gradient-glow); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }
.contact-info-text h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.contact-info-text p { font-size: 0.9rem; color: var(--text-secondary); }
.contact-form { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 40px; }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; font-size: 0.9rem; font-weight: 500; margin-bottom: 8px; color: var(--text-secondary); }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 14px 18px; background: var(--bg-dark); border: 1px solid var(--border); border-radius: 10px; color: var(--text-primary); font-size: 0.95rem; font-family: inherit; transition: var(--transition); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,212,255,0.1); }
.form-group textarea { min-height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* ===== 移动端菜单 ===== */
.mobile-menu { position: fixed; top: 0; right: -100%; width: 80%; max-width: 350px; height: 100vh; background: var(--bg-card); border-left: 1px solid var(--border); z-index: 1001; padding: 80px 30px 30px; transition: right 0.3s ease; }
.mobile-menu.active { right: 0; }
.mobile-menu-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 1000; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
.mobile-menu-overlay.active { opacity: 1; pointer-events: all; }
.mobile-menu a { display: block; padding: 16px 0; font-size: 1.1rem; font-weight: 500; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
.mobile-menu a:hover { color: var(--primary); }

.glow-orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.3; pointer-events: none; }
.glow-orb-1 { width: 400px; height: 400px; background: rgba(0,212,255,0.2); top: 10%; left: -10%; animation: float 8s ease-in-out infinite; }
.glow-orb-2 { width: 300px; height: 300px; background: rgba(123,45,255,0.2); bottom: 20%; right: -5%; animation: float 10s ease-in-out infinite 2s; }

.back-to-top { position: fixed; bottom: 30px; right: 30px; width: 48px; height: 48px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 100; opacity: 0; transform: translateY(20px); transition: var(--transition); font-size: 1.2rem; }
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--gradient-primary); border-color: transparent; color: white; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .clients-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .service-detail-grid { grid-template-columns: 1fr; }
    .about-values-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .navbar { padding: 0 20px; }
    .nav-links, .nav-cta { display: none; }
    .mobile-menu-btn { display: flex; }
    .data-bar-inner { grid-template-columns: repeat(2, 1fr); }
    .data-item:nth-child(2)::after { display: none; }
    .services-grid, .solutions-grid, .tech-grid, .clients-grid, .footer-grid, .about-features, .case-grid, .about-values-grid { grid-template-columns: 1fr; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .btn-primary, .btn-secondary { width: 100%; max-width: 280px; justify-content: center; }
    .form-row { grid-template-columns: 1fr; }
    .page-hero { padding-top: 120px; }
}