/* GPS Template — Dark Tech Blue */
:root {
    --primary: #0EA5E9;
    --primary-dim: #0284C7;
    --primary-glow: rgba(14,165,233,0.25);
    --accent: #38BDF8;
    --bg: #0A0E1A;
    --bg-card: rgba(14,165,233,0.04);
    --bg-card-hover: rgba(14,165,233,0.08);
    --text: #E8ECF4;
    --text-sec: #8B95A8;
    --text-muted: #5A6478;
    --border: rgba(14,165,233,0.12);
    --border-hover: rgba(14,165,233,0.25);
    --radius: 10px;
    --radius-lg: 14px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}

.text-glow{color:var(--accent);text-shadow:0 0 20px var(--primary-glow),0 0 40px rgba(14,165,233,0.1)}

/* ===== Navbar ===== */
.navbar{position:fixed;top:14px;left:14px;right:14px;z-index:1000;display:flex;align-items:center;justify-content:space-between;padding:14px 24px;background:rgba(10,14,26,0.88);backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:var(--radius-lg);transition:background .3s,box-shadow .3s}
.navbar.scrolled{background:rgba(10,14,26,0.96);box-shadow:0 4px 24px rgba(0,0,0,0.4)}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem;color:var(--accent)}
.logo-icon{width:34px;height:34px;display:flex;align-items:center;justify-content:center;background:var(--primary);color:#fff;border-radius:8px}
.logo-icon svg{stroke:#fff}
.nav-links{display:flex;list-style:none;gap:28px}
.nav-links a{font-size:.88rem;color:var(--text-sec);transition:color .2s}
.nav-links a:hover{color:var(--accent)}
.nav-cta{display:inline-flex;align-items:center;gap:6px;padding:9px 20px;background:var(--primary);color:#fff;border-radius:8px;font-size:.84rem;font-weight:600;transition:all .2s;cursor:pointer}
.nav-cta:hover{background:var(--primary-dim);box-shadow:0 0 20px var(--primary-glow)}
.mobile-menu-btn{display:none;background:none;border:none;color:var(--accent);cursor:pointer;padding:4px}

/* ===== Hero ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:100px 0 80px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg-img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,14,26,0.92) 0%,rgba(10,14,26,0.75) 50%,rgba(10,14,26,0.88) 100%)}
.hero-content{position:relative;z-index:1;max-width:680px}
.hero-badge{display:inline-block;padding:6px 16px;background:rgba(14,165,233,0.1);border:1px solid var(--border);border-radius:20px;font-size:.78rem;font-weight:600;color:var(--accent);letter-spacing:2px;margin-bottom:24px}
.hero h1{font-size:3rem;font-weight:800;line-height:1.15;margin-bottom:20px}
.hero-desc{font-size:1.02rem;color:var(--text-sec);margin-bottom:32px;line-height:1.8;max-width:540px}
.hero-actions{display:flex;gap:14px;margin-bottom:40px}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;background:var(--primary);color:#fff;border-radius:8px;font-weight:700;font-size:.9rem;transition:all .2s;cursor:pointer}
.btn-primary:hover{background:var(--primary-dim);box-shadow:0 8px 28px var(--primary-glow);transform:translateY(-2px)}
.btn-outline{display:inline-flex;align-items:center;padding:14px 28px;background:transparent;color:var(--text-sec);border:1px solid var(--border);border-radius:8px;font-size:.9rem;transition:all .2s;cursor:pointer}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.hero-stats{display:flex;align-items:center;gap:28px}
.hs-item{text-align:center}
.hs-num{display:block;font-size:1.5rem;font-weight:800;color:var(--accent)}
.hs-label{font-size:.75rem;color:var(--text-muted)}
.hs-divider{width:1px;height:36px;background:var(--border)}

/* ===== Section Common ===== */
.sec-header{text-align:center;margin-bottom:52px}
.sec-tag{display:inline-block;padding:5px 14px;background:rgba(14,165,233,0.08);color:var(--accent);border:1px solid var(--border);border-radius:20px;font-size:.75rem;font-weight:600;letter-spacing:1px;margin-bottom:12px}
.sec-header h2{font-size:2rem;font-weight:700;margin-bottom:10px}
.sec-header p{font-size:.92rem;color:var(--text-sec);max-width:520px;margin:0 auto}

/* ===== Features ===== */
.features{padding:90px 0}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat-card{padding:30px 26px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .25s ease;cursor:pointer;position:relative;overflow:hidden}
.feat-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:2px;background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:0;transition:opacity .3s}
.feat-card:hover{border-color:var(--border-hover);background:var(--bg-card-hover);transform:translateY(-4px)}
.feat-card:hover::before{opacity:1}
.feat-icon{width:46px;height:46px;display:flex;align-items:center;justify-content:center;background:rgba(14,165,233,0.1);border:1px solid var(--border);border-radius:10px;margin-bottom:16px}
.feat-icon svg{width:22px;height:22px;stroke:var(--accent)}
.feat-card h3{font-size:1.05rem;font-weight:600;margin-bottom:8px}
.feat-card p{font-size:.84rem;color:var(--text-sec);line-height:1.7}

/* ===== About ===== */
.about-sec{padding:90px 0;background:rgba(14,165,233,0.02)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-img{position:relative}
.about-img img{border-radius:var(--radius-lg);border:1px solid var(--border);object-fit:cover;width:100%;max-height:380px}
.about-float{position:absolute;bottom:-16px;right:-16px;background:rgba(10,14,26,0.9);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:var(--radius);padding:14px 20px;text-align:center}
.af-num{display:block;font-size:1.5rem;font-weight:800;color:var(--accent)}
.af-label{font-size:.72rem;color:var(--text-muted)}
.about-text .sec-tag{margin-bottom:10px}
.about-text h2{font-size:1.8rem;font-weight:700;margin-bottom:16px}
.about-text p{font-size:.9rem;color:var(--text-sec);margin-bottom:14px;line-height:1.8}
.link-accent{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:.88rem;transition:gap .2s;cursor:pointer}
.link-accent:hover{gap:10px}

/* ===== Testimonials ===== */
.testimonials{padding:90px 0}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.testi-card{padding:28px 24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .25s}
.testi-card:hover{transform:translateY(-3px);border-color:var(--border-hover)}
.testi-stars{color:var(--accent);font-size:.88rem;margin-bottom:14px;letter-spacing:2px}
.testi-card>p{font-size:.88rem;color:var(--text-sec);line-height:1.8;margin-bottom:18px;font-style:italic}
.testi-author{display:flex;align-items:center;gap:10px}
.ta-avatar{width:36px;height:36px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem;flex-shrink:0}
.testi-author strong{display:block;font-size:.85rem}
.testi-author span{font-size:.75rem;color:var(--text-muted)}

/* ===== FAQ ===== */
.faq{padding:90px 0;background:rgba(14,165,233,0.02)}
.faq-layout{display:grid;grid-template-columns:1fr 2fr;gap:60px}
.faq-intro{position:sticky;top:100px;align-self:start}
.faq-intro .sec-tag{margin-bottom:10px}
.faq-intro h2{font-size:1.8rem;font-weight:700;margin-bottom:12px}
.faq-intro p{font-size:.88rem;color:var(--text-sec);line-height:1.8}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .2s}
.faq-item:hover{border-color:var(--border-hover)}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;cursor:pointer;font-weight:500;font-size:.9rem}
.faq-q svg{flex-shrink:0;stroke:var(--accent);transition:transform .3s}
.faq-item.active .faq-q svg{transform:rotate(180deg)}
.faq-a{padding:0 20px 16px;color:var(--text-sec);font-size:.85rem;line-height:1.8;display:none}
.faq-item.active .faq-a{display:block}

/* ===== Recommend ===== */
.recommend{padding:90px 0}
.recommend-grid{display:flex;flex-wrap:wrap;gap:14px 20px;justify-content:center}
.recommend-grid a{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;font-size:.85rem;color:var(--text-sec);transition:all .2s;cursor:pointer}
.recommend-grid a:hover{border-color:var(--accent);color:var(--accent);background:var(--bg-card-hover)}

/* ===== CTA ===== */
.cta-sec{padding:80px 0}
.cta-box{text-align:center;padding:64px 40px;background:linear-gradient(135deg,rgba(14,165,233,0.08),rgba(56,189,248,0.04));border:1px solid var(--border);border-radius:var(--radius-lg);position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent)}
.cta-box h2{font-size:1.8rem;font-weight:700;margin-bottom:10px}
.cta-box p{font-size:.95rem;color:var(--text-sec);margin-bottom:28px}

/* ===== Footer ===== */
.footer{padding:48px 0 0;border-top:1px solid var(--border)}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-brand .logo{margin-bottom:14px}
.footer-desc{font-size:.82rem;color:var(--text-muted);line-height:1.8;max-width:360px}
.footer-nav h4{font-size:.9rem;font-weight:600;margin-bottom:14px;color:var(--text)}
.footer-nav ul{list-style:none}
.footer-nav li{margin-bottom:8px}
.footer-nav a{font-size:.82rem;color:var(--text-muted);transition:color .2s}
.footer-nav a:hover{color:var(--accent)}
.footer-bottom{padding:20px 0;border-top:1px solid var(--border);text-align:center}
.footer-bottom p{font-size:.78rem;color:var(--text-muted)}

/* ===== Page Header (sub-pages) ===== */
.page-hero{padding:140px 0 60px;text-align:center;background:linear-gradient(180deg,rgba(14,165,233,0.04),transparent)}
.page-hero h1{font-size:2.5rem;font-weight:800;margin-bottom:10px}
.page-hero p{font-size:.95rem;color:var(--text-sec)}

/* ===== Responsive ===== */
@media(max-width:1024px){
    .features-grid{grid-template-columns:repeat(2,1fr)}
    .about-grid{grid-template-columns:1fr}
    .about-text{text-align:center}
    .about-text .link-accent{justify-content:center}
    .testi-grid{grid-template-columns:1fr}
    .faq-layout{grid-template-columns:1fr}
    .faq-intro{position:static;text-align:center}
    .footer-top{grid-template-columns:1fr}
    .footer-top{text-align:center}
    .footer-desc{margin:0 auto;max-width:100%}
}
@media(max-width:768px){
    .navbar{top:8px;left:8px;right:8px;padding:10px 16px;flex-wrap:wrap}
    .nav-links{display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;flex-direction:column;background:rgba(10,14,26,0.97);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;gap:0;backdrop-filter:blur(16px)}
    .nav-links.active{display:flex}
    .nav-links li{border-bottom:1px solid var(--border)}
    .nav-links li:last-child{border-bottom:none}
    .nav-links a{display:block;padding:12px 0}
    .nav-cta{display:none}
    .mobile-menu-btn{display:block}
    .hero{padding:90px 0 60px;min-height:auto}
    .hero h1{font-size:2rem}
    .hero-actions{flex-direction:column}
    .btn-primary,.btn-outline{width:100%;justify-content:center;padding:14px 24px}
    .hero-stats{justify-content:center;flex-wrap:wrap;gap:16px}
    .hs-divider{display:none}
    .features-grid{grid-template-columns:1fr}
    .sec-header h2{font-size:1.5rem}
    .cta-box{padding:40px 20px}
    .cta-box h2{font-size:1.4rem}
    .footer-top{gap:24px}
    .about-float{bottom:-10px;right:10px;padding:10px 14px}
}