:root{--bg:#f6f7fb;--card:#fff;--text:#172033;--muted:#6d7485;--line:#e6e8ef;--primary:#635bff;--primary2:#8b5cf6;--shadow:0 14px 45px rgba(20,25,50,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Tahoma,"Segoe UI",Arial,sans-serif;line-height:1.8}a{color:inherit;text-decoration:none}.container{max-width:1120px;margin:auto;padding:0 20px}
.topbar{height:72px;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.nav{height:72px;display:flex;align-items:center;gap:32px}.brand{font-size:21px;font-weight:900;display:flex;align-items:center;gap:9px;margin-left:auto}.brand-icon{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:white;background:linear-gradient(135deg,var(--primary),var(--primary2));box-shadow:0 8px 18px #635bff33}.nav nav{display:flex;gap:24px;color:var(--muted);font-size:14px}.nav nav a:hover{color:var(--primary)}.icon-btn{border:1px solid var(--line);background:var(--card);border-radius:10px;width:38px;height:38px;cursor:pointer}
.hero{min-height:430px;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:30px;padding:55px 0 30px}.eyebrow{font-size:12px;color:var(--primary);font-weight:800;background:#635bff12;padding:6px 10px;border-radius:20px}.hero h1{font-size:45px;line-height:1.35;margin:20px 0 15px;letter-spacing:-1px}.hero p{color:var(--muted);font-size:17px;max-width:650px}.search-wrap{height:58px;max-width:600px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:15px;display:flex;align-items:center;gap:10px;padding:0 18px;margin-top:26px}.search-wrap span{font-size:27px;color:var(--muted)}.search-wrap input{border:0;outline:0;background:none;width:100%;font-size:15px;font-family:inherit;color:var(--text)}.hero-art{height:310px;position:relative;display:grid;place-items:center}.orb{position:absolute;border-radius:50%;filter:blur(2px)}.orb1{width:240px;height:240px;background:#8b5cf625;top:20px;right:80px}.orb2{width:140px;height:140px;background:#635bff20;bottom:10px;left:70px}.code-card{position:relative;width:270px;padding:28px;border:1px solid #ffffffaa;border-radius:20px;background:#16182b;color:#c9d1ff;box-shadow:0 25px 70px #17182b33;direction:ltr;text-align:left;font-family:monospace;line-height:2}.code-card span{color:#b99cff}.code-card b{color:#70d6ff}
.section-head{display:flex;align-items:end;justify-content:space-between;margin:38px 0 20px}.section-head h2{margin:8px 0 0;font-size:27px}.text-link{color:var(--primary);font-size:14px}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.tool-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:17px;padding:20px;min-height:175px;transition:.2s;box-shadow:0 4px 20px rgba(20,25,50,.03)}.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfcdfd}.tool-icon{width:47px;height:47px;border-radius:13px;display:grid;place-items:center;background:#635bff0f;color:var(--primary);font-weight:900;margin-bottom:13px}.tool-cat{font-size:11px;color:var(--primary);font-weight:700}.tool-card h3{margin:2px 0;font-size:16px}.tool-card p{margin:4px 0;color:var(--muted);font-size:12px;line-height:1.7}.arrow{position:absolute;left:18px;bottom:17px;color:#a1a7b5}.info-strip{margin:55px 0 70px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:25px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.info-strip div{display:flex;flex-direction:column}.info-strip b{font-size:15px}.info-strip span{font-size:12px;color:var(--muted)}.footer{border-top:1px solid var(--line);background:var(--card);padding:28px 0;color:var(--muted);font-size:12px}.footer-inner{display:flex;justify-content:space-between}.footer strong{color:var(--text)}
.tool-page{max-width:820px;margin:50px auto 80px}.tool-header{margin-bottom:25px}.tool-header h1{font-size:32px;margin:10px 0}.tool-header p{color:var(--muted)}.tool-box{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:25px;box-shadow:var(--shadow)}textarea,.field,input[type=text],input[type=number],select{width:100%;border:1px solid var(--line);border-radius:12px;padding:13px;font:inherit;background:var(--bg);color:var(--text);outline:none}textarea:focus,input:focus,select:focus{border-color:var(--primary)}textarea{min-height:260px;direction:ltr;text-align:left;font-family:monospace}.row{display:flex;gap:12px;align-items:center;margin:15px 0}.btn{border:0;border-radius:11px;padding:11px 18px;background:var(--primary);color:#fff;font:inherit;cursor:pointer}.btn.secondary{background:#eef0f7;color:var(--text)}.result{margin-top:18px}.result pre{white-space:pre-wrap;word-break:break-word;background:#17182b;color:#dce2ff;padding:18px;border-radius:12px;direction:ltr;text-align:left;overflow:auto}.notice{padding:12px 15px;border-radius:11px;background:#fff8e6;color:#755a15;font-size:13px;margin:15px 0}.check{display:flex;gap:10px;align-items:center}.check input{width:auto}
.dark{--bg:#0e1018;--card:#151824;--text:#edf0f8;--muted:#9da4b5;--line:#272c3b;--shadow:0 14px 45px rgba(0,0,0,.25)}.dark .topbar{background:rgba(15,17,25,.82)}.dark .btn.secondary{background:#252a38;color:var(--text)}
@media(max-width:850px){.hero{grid-template-columns:1fr}.hero-art{display:none}.tool-grid{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:35px}.info-strip{grid-template-columns:1fr}.nav nav{display:none}}
@media(max-width:520px){.tool-grid{grid-template-columns:1fr}.tool-card{min-height:145px}.hero{padding-top:35px}.footer-inner{flex-direction:column;gap:12px}}