:root{
    --bg:#050816;
    --panel:rgba(10,18,44,0.82);
    --panel-strong:#101a3a;
    --text:#eaf2ff;
    --muted:#8fb0ff;
    --accent:#5ee7ff;
    --accent-2:#7c6cff;
    --border:rgba(255,255,255,0.16);
}

*{margin:0;padding:0;box-sizing:border-box}
body{
    font-family:'Segoe UI','Microsoft YaHei',sans-serif;
    color:var(--text);
    background:radial-gradient(circle at top left, rgba(94,231,255,0.16), transparent 24%),
               radial-gradient(circle at top right, rgba(124,108,255,0.18), transparent 28%),
               linear-gradient(135deg,#03050e 0%,#07111f 45%,#0a1731 100%);
    overflow-x:hidden;
}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
a{color:var(--accent);text-decoration:none;transition:0.3s}

#particles-js{
    position:fixed;width:100%;height:100%;z-index:-1;
    background:transparent;
}

header{
    background:rgba(3,7,20,0.85);
    backdrop-filter:blur(18px);
    box-shadow:0 12px 30px rgba(0,0,0,0.25);
    position:sticky;top:0;z-index:100;
    border-bottom:1px solid var(--border);
}
.nav-container{
    display:flex;justify-content:space-between;align-items:center;
    padding:14px 20px;
    gap:12px;
}
.logo{font-size:24px;font-weight:700;color:#fff;white-space:nowrap}
.logo i{color:var(--accent)}
nav ul{list-style:none;display:flex;gap:16px;flex-wrap:wrap;justify-content:flex-end}
nav a{color:#dceaff;font-weight:500;position:relative;padding:6px 0;display:inline-block;font-size:15px}
nav a:hover,nav a.active{color:#fff}
nav a::after{
    content:'';position:absolute;bottom:-2px;left:0;
    width:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:0.3s;
}
nav a:hover::after{width:100%}

.hero{
    padding:100px 20px 70px;
    position:relative;
    overflow:hidden;
}
.hero::before{
    content:'';position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(94,231,255,0.15),transparent 35%,rgba(124,108,255,0.15));
    pointer-events:none;
}
.hero-shell{
    display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;align-items:center;
    position:relative;
}
.hero-copy h1{
    font-size:clamp(2.1rem,4.6vw,3.8rem);
    line-height:1.15;
    margin-bottom:18px;
    color:#fff;
    text-shadow:0 0 25px rgba(94,231,255,0.25);
}
.hero-copy p{font-size:18px;color:var(--muted);margin-bottom:28px;line-height:1.8;max-width:640px}
.hero-badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:10px 16px;border-radius:999px;
    background:rgba(94,231,255,0.12);
    color:var(--accent);
    border:1px solid rgba(94,231,255,0.25);
    margin-bottom:20px;
    font-weight:600;
}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.btn{
    display:inline-block;padding:13px 24px;border-radius:999px;
    font-weight:700;transition:0.3s;border:2px solid transparent;
    box-shadow:0 10px 24px rgba(0,0,0,0.2);
}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(94,231,255,0.25)}
.btn-outline{border-color:rgba(255,255,255,0.18);color:#fff;background:rgba(255,255,255,0.06)}
.btn-outline:hover{background:rgba(255,255,255,0.12)}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.hero-stats div{
    background:rgba(255,255,255,0.06);
    border:1px solid var(--border);
    border-radius:16px;padding:14px 12px;text-align:center;
}
.hero-stats strong{display:block;font-size:20px;color:#fff;margin-bottom:6px}
.hero-stats span{font-size:12px;color:var(--muted)}

.hero-visual{position:relative;min-height:380px;display:flex;align-items:center;justify-content:center}
.orb{position:absolute;border-radius:50%;filter:blur(4px);animation:float 6s ease-in-out infinite}
.orb-1{width:180px;height:180px;top:40px;left:40px;background:radial-gradient(circle at 30% 30%, rgba(94,231,255,0.95), rgba(94,231,255,0.15));}
.orb-2{width:240px;height:240px;bottom:30px;right:30px;background:radial-gradient(circle at 30% 30%, rgba(124,108,255,0.95), rgba(124,108,255,0.12));animation-delay:1.2s}
.visual-card{
    position:relative;z-index:2;width:100%;max-width:360px;
    background:linear-gradient(145deg,rgba(16,28,56,0.95),rgba(8,13,28,0.95));
    border:1px solid var(--border);border-radius:24px;padding:24px;
    box-shadow:0 25px 60px rgba(0,0,0,0.35);
    transform:perspective(1200px) rotateY(-8deg) rotateX(8deg);
}
.visual-card-top{display:flex;justify-content:space-between;align-items:center;color:#fff;font-weight:600;margin-bottom:16px}
.live-pill{padding:6px 10px;border-radius:999px;background:rgba(255,89,89,0.2);color:#ff8e8e;font-size:12px}
.visual-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.mini-card{
    padding:14px;border-radius:14px;background:rgba(255,255,255,0.06);
    border:1px solid rgba(255,255,255,0.1);text-align:center;color:#eaf2ff;
    display:flex;flex-direction:column;gap:8px;align-items:center;min-height:86px;justify-content:center;
}
.mini-card i{font-size:22px;color:var(--accent)}
.visual-footer{margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,0.08);color:#8fb0ff;font-size:13px;text-align:center}

.section-intro{max-width:780px;margin:0 auto 26px;text-align:center}
.section-eyebrow{
    display:inline-block;padding:7px 12px;border-radius:999px;
    background:rgba(94,231,255,0.12);color:var(--accent);
    border:1px solid rgba(94,231,255,0.2);font-size:12px;font-weight:700;letter-spacing:0.18em;text-transform:uppercase;margin-bottom:12px;
}
.section-title{
    text-align:center;font-size:32px;margin:8px 0 10px;
    color:#fff;position:relative;
}
.section-title::after{
    content:'';display:block;width:70px;height:3px;
    background:linear-gradient(90deg,var(--accent),var(--accent-2));margin:12px auto 0;
}
.section-intro p{color:#a8bfe8;font-size:15px;line-height:1.8}
.feature-band{padding:16px 0 8px}
.benefit-grid,.process-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:10px}
.benefit-card,.process-card{
    background:linear-gradient(145deg,rgba(16,28,56,0.95),rgba(9,15,34,0.95));
    border:1px solid var(--border);border-radius:18px;padding:22px;text-align:left;box-shadow:0 16px 34px rgba(0,0,0,0.18);
}
.benefit-card i,.process-card span{color:var(--accent);font-size:20px;margin-bottom:10px;display:inline-block}
.benefit-card h3,.process-card h3{color:#fff;margin-bottom:8px}
.benefit-card p,.process-card p{color:#b8c8f0;line-height:1.7;font-size:14px}
.process-card span{font-size:28px;font-weight:700}

.service-grid,.article-grid,.ai-grid,.services-detail-grid{
    display:grid;gap:25px;margin-bottom:60px;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
}

.service-card,.article-card,.ai-card,.service-block,.contact-card{
    position:relative;overflow:hidden;
    background:linear-gradient(145deg,rgba(16,28,56,0.95),rgba(9,15,34,0.95));
    border-radius:20px;padding:30px;
    box-shadow:0 18px 40px rgba(0,0,0,0.24);
    border:1px solid var(--border);
    transition:0.3s;
    text-align:center;
}
.service-card::before,.article-card::before{
    content:'';position:absolute;inset:0;
    background:linear-gradient(135deg,rgba(94,231,255,0.14),transparent 40%,rgba(124,108,255,0.12));
    opacity:0;transition:0.3s;
    pointer-events:none;
}
.service-card:hover,.article-card:hover,.ai-card:hover,.service-block:hover,.contact-card:hover{
    transform:translateY(-8px) scale(1.01);
    box-shadow:0 24px 54px rgba(0,0,0,0.28);
    border-color:rgba(94,231,255,0.35);
}
.service-card,.article-card,.ai-card,.service-block,.contact-card,.tool-card{
    position:relative;
    overflow:hidden;
}
.service-card::after,.article-card::after,.ai-card::after,.tool-card::after{
    content:'';position:absolute;left:50%;bottom:-30px;transform:translateX(-50%);width:70%;height:10px;background:rgba(94,231,255,0.22);filter:blur(10px);opacity:0;transition:0.3s;
}
.service-card:hover::after,.article-card:hover::after,.ai-card:hover::after,.tool-card:hover::after{opacity:1;bottom:-10px}
.service-card:hover::before,.article-card:hover::before{opacity:1}
.service-card i,.ai-card i,.service-block i,.contact-card i{
    font-size:40px;color:var(--accent);margin-bottom:15px;
}
.service-card h3,.ai-card h3,.service-block h2,.article-card h3 a,.contact-card h3{
    color:#fff;margin-bottom:10px;
}
.service-card p,.ai-card p,.service-block p,.article-card .excerpt,.contact-card p{
    color:#b8c8f0;font-size:14px;line-height:1.7;
}
.card-link{color:var(--accent);font-weight:600}
.card-tag{
    display:inline-block;padding:6px 10px;border-radius:999px;
    background:rgba(94,231,255,0.12);color:var(--accent);font-size:12px;
    margin-bottom:10px;border:1px solid rgba(94,231,255,0.2);
}

.tech-bars{max-width:700px;margin:0 auto 60px}
.tech-item{margin-bottom:25px}
.tech-info{
    display:flex;align-items:center;gap:10px;
    margin-bottom:8px;color:#fff;font-weight:500;
}
.tech-info i{color:var(--accent);width:24px;text-align:center}
.progress-bar{
    background:rgba(255,255,255,0.08);border-radius:10px;height:10px;overflow:hidden;border:1px solid rgba(255,255,255,0.08);
}
.progress-fill{
    background:linear-gradient(90deg,var(--accent),var(--accent-2));
    height:100%;width:0;border-radius:10px;
    transition:width 1.5s ease;
    color:#fff;font-size:12px;line-height:10px;padding-left:5px;
}

.article-card h3 a{color:#fff}
.article-card .date{font-size:13px;color:#8fb0ff;margin:10px 0}

.query-form{
    background:linear-gradient(145deg,rgba(16,28,56,0.95),rgba(9,15,34,0.95));
    padding:30px;border-radius:20px;border:1px solid var(--border);
    box-shadow:0 18px 40px rgba(0,0,0,0.24);
    max-width:500px;margin:40px auto;
}
.query-form input[type="text"],.query-form textarea,.query-form select{
    width:100%;padding:12px;border:1px solid rgba(255,255,255,0.12);
    border-radius:10px;margin-bottom:15px;font-size:16px;background:rgba(255,255,255,0.06);color:#fff;
}
.query-form button,.btn-primary{
    background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border:none;
    padding:12px 30px;border-radius:50px;font-weight:bold;cursor:pointer;transition:0.3s;
}
.query-form button:hover{transform:translateY(-2px)}

.result-box{
    background:rgba(94,231,255,0.1);border-left:4px solid var(--accent);
    padding:20px;border-radius:10px;margin-top:20px;text-align:left;
}
.result-box p{margin:8px 0;color:#dceaff}
.error-box{
    background:rgba(255,89,89,0.12);color:#ffb6b6;padding:15px;border-radius:10px;margin-bottom:20px;
}
.limit-info{
    background:rgba(124,108,255,0.12);padding:10px 15px;border-radius:10px;
    margin-bottom:20px;color:#d9dcff;font-size:14px;
}

.page-content{
    padding:60px 0;min-height:60vh;
    background:transparent;
}
.page-content h1{
    font-size:36px;color:#fff;margin-bottom:15px;
}
.subtitle{color:#b8c8f0;font-size:18px;margin-bottom:40px}

.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:20px;margin-top:30px}
.tool-card{
    background:linear-gradient(145deg,rgba(16,28,56,0.95),rgba(9,15,34,0.95));
    border-radius:20px;padding:30px 15px;text-align:center;box-shadow:0 18px 40px rgba(0,0,0,0.24);
    transition:0.3s;text-decoration:none;color:#eaf2ff;border:1px solid var(--border);
}
.tool-card:hover{transform:translateY(-5px);box-shadow:0 24px 54px rgba(0,0,0,0.28)}
.tool-card i{font-size:36px;color:var(--accent);margin-bottom:15px}
.tool-card h3{margin:0;color:#fff;font-size:16px}

.chat-container{max-width:700px;margin:0 auto}
.chat-box{
    background:linear-gradient(145deg,rgba(16,28,56,0.95),rgba(9,15,34,0.95));
    border-radius:20px;padding:20px;height:400px;overflow-y:auto;margin-bottom:20px;
    box-shadow:0 18px 40px rgba(0,0,0,0.24);text-align:left;border:1px solid var(--border);
}
.chat-msg{margin-bottom:15px}
.chat-msg.user{text-align:right}
.chat-msg .bubble{display:inline-block;padding:10px 15px;border-radius:18px;max-width:80%;word-wrap:break-word}
.chat-msg.user .bubble{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}
.chat-msg.bot .bubble{background:rgba(255,255,255,0.08);color:#eaf2ff}
.input-area{display:flex;gap:10px}
.input-area input{flex:1;padding:12px;border:1px solid rgba(255,255,255,0.12);border-radius:10px;background:rgba(255,255,255,0.06);color:#fff}
.input-area button{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border:none;padding:12px 20px;border-radius:10px;cursor:pointer}

.code-area{background:#121826;color:#d4d4d4;padding:20px;border-radius:10px;overflow-x:auto;font-family:'Courier New',monospace;white-space:pre-wrap;margin-top:20px;text-align:left}

footer{background:linear-gradient(135deg,#050816,#101a3a);color:#b8c8f0;padding:25px;margin-top:60px;border-top:1px solid var(--border)}
.footer-shell{display:flex;justify-content:space-between;align-items:center;gap:16px}
.footer-links{display:flex;gap:16px;flex-wrap:wrap}
.footer-links a{color:#b8c8f0}
.footer-links a:hover{color:#fff}

.floating-actions{position:fixed;right:16px;bottom:20px;display:flex;flex-direction:column;gap:10px;z-index:120}
.fab{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 12px 24px rgba(0,0,0,0.24);transition:0.3s;border:1px solid rgba(255,255,255,0.16)}
.fab:hover{transform:translateY(-3px) scale(1.03)}
.fab-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2))}
.fab-secondary{background:linear-gradient(135deg,#2f7cff,#4fd6ff)}
.fab-dark{background:rgba(8,12,28,0.95)}
.fab i{font-size:18px}

#backToTop{opacity:0;pointer-events:none;transform:translateY(10px)}
#backToTop.show{opacity:1;pointer-events:auto;transform:translateY(0)}

@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}

@media(max-width:768px){
    body{font-size:15px}
    .container{padding:0 14px}
    .nav-container{flex-direction:column;align-items:flex-start;padding:12px 14px}
    nav{width:100%}
    nav ul{justify-content:flex-start;gap:10px 12px;padding-top:4px;flex-wrap:wrap}
    nav a{padding:6px 0;font-size:14px}

    .hero{padding:56px 0 42px}
    .hero-shell{grid-template-columns:1fr;gap:24px}
    .hero-copy h1{font-size:28px;line-height:1.2}
    .hero-copy p{font-size:15px;line-height:1.7}
    .hero-btns{flex-direction:column;align-items:stretch;gap:10px}
    .btn{width:100%;text-align:center;padding:13px 16px}
    .hero-stats{grid-template-columns:1fr;gap:10px}
    .hero-stats div{padding:12px 10px}

    .hero-visual{min-height:280px;margin-top:8px}
    .visual-card{max-width:100%;padding:18px;transform:none}
    .visual-grid{gap:10px}
    .mini-card{min-height:78px;padding:10px}

    .section-title{font-size:24px;margin:8px 0 10px}
    .section-intro p{font-size:14px}
    .benefit-grid,.process-grid{grid-template-columns:1fr}
    .service-grid,.article-grid,.ai-grid,.services-detail-grid,.tools-grid{grid-template-columns:1fr;gap:14px}
    .service-card,.article-card,.ai-card,.service-block,.contact-card,.tool-card,.query-form,.chat-box{padding:18px;border-radius:16px}
    .query-form{margin:24px auto 0}
    .page-content{padding:36px 0}
    .page-content h1{font-size:28px}
    .subtitle{font-size:15px;margin-bottom:24px}

    .chat-container{max-width:100%}
    .chat-box{height:320px}
    .input-area{flex-direction:column}
    .input-area button{width:100%}

    footer{padding:20px 14px;margin-top:40px;font-size:14px}
    .footer-shell{flex-direction:column;align-items:flex-start}
    .floating-actions{right:12px;bottom:14px;gap:8px}
    .fab{width:44px;height:44px}
}