root{--bg:#0f0f1a;--surface:#1a1a2e;--surface2:#252542;--border:#2e2e4a;--cyan:#00e5ff;--pink:#ff2d7c;--purple:#a855f7;--white:#f0f0ff;--muted:#8888aa;--text:#c8c8e8}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5,h6{font-family:'Space Grotesk',sans-serif;color:var(--white);line-height:1.25}
a{text-decoration:none;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.g{background:linear-gradient(135deg,var(--cyan),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.header{background:rgba(15,15,26,0.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1000}
.header .container{display:flex;align-items:center;justify-content:space-between}
.logo{font-family:'Space Grotesk',sans-serif;font-size:1.5rem;font-weight:700;color:var(--white);display:flex;align-items:center;gap:10px}
.logo i{color:var(--cyan);font-size:1.7rem}
.logo span{background:linear-gradient(135deg,var(--cyan),var(--pink));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.nav{position:relative}
.nav-menu{display:flex;list-style:none;gap:4px}
.nav-menu li a{padding:18px 14px;display:block;color:var(--muted);font-size:0.88rem;font-weight:500;transition:color .25s;position:relative}
.nav-menu li a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:var(--cyan);transition:width .25s}
.nav-menu li a:hover,.nav-menu li a.active{color:var(--cyan)}
.nav-menu li a:hover::after,.nav-menu li a.active::after{width:70%}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:10px}
.menu-toggle span{width:22px;height:2px;background:var(--white);transition:all .3s}
.menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.hero{background:radial-gradient(ellipse at 30% 0%,rgba(0,229,255,0.08) 0%,transparent 60%),radial-gradient(ellipse at 80% 100%,rgba(255,45,124,0.06) 0%,transparent 60%),var(--bg);padding:90px 0 70px;text-align:center;position:relative}
.hero h1{font-size:3.2rem;margin-bottom:18px;letter-spacing:-1px}
.hero p{color:var(--muted);font-size:1.1rem;max-width:580px;margin:0 auto 36px}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-pri{background:linear-gradient(135deg,var(--cyan),#0099cc);color:var(--bg);padding:14px 32px;border-radius:10px;font-weight:700;font-size:1rem;transition:all .3s;display:inline-flex;align-items:center;gap:8px;box-shadow:0 4px 20px rgba(0,229,255,0.25)}
.btn-pri:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,229,255,0.4)}
.btn-out{background:transparent;border:1.5px solid var(--border);color:var(--white);padding:13px 28px;border-radius:10px;font-weight:600;transition:all .3s;display:inline-flex;align-items:center;gap:8px}
.btn-out:hover{border-color:var(--cyan);color:var(--cyan)}
.hero-stats{display:flex;justify-content:center;gap:60px;margin-top:50px;flex-wrap:wrap}
.hero-stat .num{font-family:'Space Grotesk',sans-serif;font-size:2.6rem;font-weight:700;background:linear-gradient(135deg,var(--cyan),var(--pink));-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:block}
.hero-stat .label{color:var(--muted);font-size:0.82rem;margin-top:4px}
.section{padding:80px 0}
.section-dark{background:var(--surface)}
.section h2{font-size:2.2rem;margin-bottom:12px;text-align:center}
.section-desc{color:var(--muted);text-align:center;max-width:540px;margin:0 auto 48px;font-size:1rem}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:26px 22px;transition:all .3s;cursor:pointer}
.tool-card:hover{transform:translateY(-5px);border-color:var(--cyan);box-shadow:0 12px 40px rgba(0,229,255,0.12)}
.tool-icon{width:54px;height:54px;background:linear-gradient(135deg,rgba(0,229,255,0.15),rgba(168,85,247,0.1));border:1px solid rgba(0,229,255,0.2);border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.tool-icon i{font-size:1.5rem;color:var(--cyan)}
.tool-card:hover .tool-icon{border-color:var(--cyan);box-shadow:0 0 20px rgba(0,229,255,0.2)}
.tool-card h3{font-size:1.05rem;margin-bottom:8px}
.tool-card p{color:var(--muted);font-size:0.84rem;line-height:1.5}
.tool-page{max-width:760px;margin:0 auto}
.tool-page h1{font-size:2rem;margin-bottom:10px}
.tool-desc{color:var(--muted);margin-bottom:28px}
.breadcrumb{font-size:0.82rem;color:var(--muted);margin-bottom:24px;padding:16px 0}
.breadcrumb a{color:var(--cyan)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:600;margin-bottom:7px;color:var(--white);font-size:0.9rem}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 14px;background:var(--surface);border:1.5px solid var(--border);border-radius:8px;color:var(--white);font-size:0.95rem;font-family:inherit;transition:border-color .2s}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--cyan)}
.form-group input[type=range]{padding:0;height:6px;-webkit-appearance:none;background:var(--border);border-radius:3px}
.btn-cal{background:linear-gradient(135deg,var(--cyan),#0099cc);color:var(--bg);padding:13px 28px;border-radius:8px;font-weight:700;cursor:pointer;border:none;font-size:1rem;width:100%;margin-top:8px;transition:all .3s}
.btn-cal:hover{box-shadow:0 6px 25px rgba(0,229,255,0.35)}
.result-box{background:var(--surface2);border:1px solid var(--cyan);border-radius:12px;padding:24px;margin-top:20px}
.result-item{padding:14px 0;border-bottom:1px solid var(--border)}
.result-item:last-child{border-bottom:none}
.result-label{font-size:0.78rem;text-transform:uppercase;letter-spacing:1px;color:var(--muted);margin-bottom:6px}
.result-value{font-size:1.3rem;font-weight:700;color:var(--cyan)}
.articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.article-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;transition:all .3s}
.article-card:hover{transform:translateY(-5px);border-color:var(--pink);box-shadow:0 12px 40px rgba(255,45,124,0.1)}
.article-card img{width:100%;height:200px;object-fit:cover}
.article-card h3{padding:16px 20px 6px;font-size:1.05rem;line-height:1.4}
.article-card p{padding:0 20px 16px;color:var(--muted);font-size:0.84rem}
.article-tag{display:inline-block;background:linear-gradient(135deg,rgba(0,229,255,0.15),rgba(168,85,247,0.1));color:var(--cyan);padding:3px 10px;border-radius:20px;font-size:0.72rem;font-weight:600;margin:12px 20px 0;text-transform:uppercase;border:1px solid rgba(0,229,255,0.2)}
.article-page{max-width:820px;margin:0 auto}
.article-header{margin-bottom:28px}
.article-header h1{font-size:2.3rem;margin-bottom:14px;line-height:1.2}
.article-meta{display:flex;gap:18px;color:var(--muted);font-size:0.85rem;flex-wrap:wrap;margin-bottom:20px}
.article-img{width:100%;height:420px;object-fit:cover;border-radius:12px;margin:16px 0}
.article-content{font-size:1.03rem;line-height:1.9;color:#d0d0ec}
.article-content h2{font-size:1.6rem;margin:36px 0 14px;color:var(--white)}
.article-content p{margin-bottom:18px}
.article-content a{color:var(--cyan)}
.related-articles{margin-top:60px;padding-top:36px;border-top:1px solid var(--border)}
.related-articles h3{font-size:1.3rem;margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.related-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px;transition:all .2s}
.related-card:hover{border-color:var(--cyan)}
.related-card h4{font-size:0.92rem;margin-bottom:4px}
.related-card p{font-size:0.8rem;color:var(--muted)}
.footer{background:var(--surface);border-top:1px solid var(--border);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid var(--border)}
.footer-col h4{color:var(--cyan);font-family:'Space Grotesk',sans-serif;font-size:1rem;margin-bottom:14px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:9px}
.footer-col ul li a{color:var(--muted);font-size:0.85rem;transition:color .2s}
.footer-col ul li a:hover{color:var(--cyan)}
.footer-bottom{text-align:center;padding:22px 0;font-size:0.8rem;color:var(--muted)}
.page-content{max-width:820px;margin:0 auto;padding:60px 24px}
.page-content h1{font-size:2.3rem;margin-bottom:24px}
.page-content h2{font-size:1.5rem;margin:32px 0 12px}
.page-content p{margin-bottom:14px;font-size:1rem;line-height:1.85}
.page-content ul{margin:12px 0 18px 24px}
.page-content li{margin-bottom:8px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin-top:28px}
.contact-form{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:28px}
.contact-form h3{font-size:1.2rem;margin-bottom:18px}
.contact-info h3{font-size:1.2rem;margin-bottom:14px;color:var(--white)}
.contact-info p{color:var(--muted);margin-bottom:10px;font-size:0.95rem}
.legal-content h2{font-size:1.25rem;margin:26px 0 10px;color:var(--cyan)}
.legal-content p{margin-bottom:12px;font-size:0.93rem;line-height:1.8}
.error-page{text-align:center;padding:120px 0}
.error-page h1{font-size:6rem;background:linear-gradient(135deg,var(--cyan),var(--pink));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:16px}
.error-page h2{font-size:1.7rem;margin-bottom:14px}
.tools-hero{text-align:center;padding:80px 0 40px;background:radial-gradient(ellipse at 50% 0%,rgba(0,229,255,0.07) 0%,transparent 70%)}
.tools-hero h1{font-size:2.5rem;margin-bottom:14px}
.tools-hero p{color:var(--muted);max-width:520px;margin:0 auto;font-size:1rem}
@media(max-width:768px){
.nav-menu{position:fixed;top:60px;left:0;right:0;background:var(--surface);flex-direction:column;padding:16px 0;transform:translateX(-100%);transition:transform .3s;z-index:999}
.nav-menu.active{transform:translateX(0)}
.menu-toggle{display:flex}
.hero h1{font-size:2rem}
.hero-stats{gap:28px}
.footer-grid{grid-template-columns:1fr}
.section{padding:50px 0}
.article-img{height:250px}
.contact-grid,.articles-grid,.tools-grid,.form-grid{grid-template-columns:1fr}
.article-header h1{font-size:1.7rem}
}