*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#8B5CF6;--primary-dark:#7c3aed;--primary-light:#f5f3ff;--secondary:#1E293B;--text:#64748B;--bg:#FAFAFA;--white:#fff;--border:#E2E8F0;--shadow:0 2px 8px rgba(0,0,0,.08);--radius:12px}
body{font-family:-apple-system,"Inter",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
header{background:var(--white);box-shadow:var(--shadow);position:sticky;top:0;z-index:100}
header .container{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:1200px}
.logo{font-size:1.4rem;font-weight:700;color:var(--secondary);display:flex;align-items:center;gap:8px}
.logo-icon{font-size:1.6rem}
nav{display:flex;gap:24px;flex-wrap:wrap}
nav a{color:var(--secondary);font-weight:500;font-size:.95rem}
nav a:hover{color:var(--primary);text-decoration:none}
.breadcrumb{background:var(--primary-light);padding:12px 20px;font-size:.9rem}
.breadcrumb a{color:var(--primary)}
.page-header{text-align:center;padding:50px 20px 30px}
.page-header h1{font-size:2.2rem;color:var(--secondary);margin-bottom:10px}
.page-header p{color:var(--text);font-size:1.1rem}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;padding:30px 0}
.tool-card{background:var(--white);border-radius:var(--radius);padding:24px 20px;text-align:center;border:1px solid var(--border);transition:all .2s;display:block;color:var(--secondary)}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--primary);text-decoration:none}
.tool-icon{font-size:2.4rem;display:block;margin-bottom:12px}
.tool-card span:last-child{font-weight:600;font-size:1rem}
.articles-list{display:flex;flex-direction:column;gap:20px;padding:30px 0}
.article-card{background:var(--white);border-radius:var(--radius);padding:24px;display:block;border:1px solid var(--border);transition:all .2s}
.article-card:hover{box-shadow:var(--shadow);border-color:var(--primary);text-decoration:none}
.article-card h3{color:var(--secondary);margin:8px 0;font-size:1.2rem}
.article-card p{color:var(--text);font-size:.95rem}
.article-tag{background:var(--primary);color:var(--white);padding:3px 12px;border-radius:20px;font-size:.8rem;font-weight:600}
.article-page{max-width:800px;margin:0 auto;padding:40px 20px}
.article-page h1{font-size:1.8rem;color:var(--secondary);margin-bottom:8px}
.article-meta{color:#999;font-size:.9rem;margin-bottom:20px}
.article-page h2{color:var(--secondary);margin:32px 0 12px;font-size:1.35rem}
.article-page p{margin-bottom:16px;font-size:1.05rem;line-height:1.85}
.related{padding:30px 0;border-top:2px solid var(--border);margin-top:40px}
.related h2{color:var(--secondary);margin-bottom:16px}
.tool-page{max-width:800px;margin:0 auto;padding:40px 20px}
.tool-page h1{color:var(--secondary);margin-bottom:10px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:600;margin-bottom:6px;color:var(--secondary)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:8px;font-size:1rem;font-family:inherit;background:var(--white)}
.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(139,92,246,.15)}
textarea{resize:vertical;min-height:100px}
.btn{padding:12px 28px;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:inherit}
.btn-primary{background:var(--primary);color:var(--white)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
.result-box{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-top:20px;line-height:1.8;min-height:60px}
.result-box:empty{display:none}
.result-box ol li{margin-bottom:8px}
footer{background:var(--secondary);color:var(--white);padding:40px 0;margin-top:60px}
.footer-bottom{text-align:center;font-size:.9rem;opacity:.8}
.footer-bottom a{color:var(--white);opacity:.8}
.footer-bottom a:hover{opacity:1}
.hero{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:var(--white);padding:80px 20px;text-align:center}
.hero h1{font-size:2.5rem;margin-bottom:16px}
.hero p{font-size:1.2rem;opacity:.9;margin-bottom:24px;max-width:600px;margin-left:auto;margin-right:auto}
.hero-btn{background:var(--white);color:var(--primary);padding:14px 32px;border-radius:30px;font-weight:700;font-size:1.1rem;display:inline-block}
.hero-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.2);text-decoration:none}
.features{padding:60px 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px;max-width:1200px;margin:0 auto}
.feature-card{text-align:center;padding:30px 20px}
.feature-card .feature-icon{font-size:2.5rem;margin-bottom:12px}
.feature-card h3{color:var(--secondary);margin-bottom:8px}
.page-content{max-width:800px;margin:0 auto;padding:40px 20px}
.page-content h1{color:var(--secondary);margin-bottom:20px;font-size:2rem}
.page-content h2{color:var(--secondary);margin:28px 0 12px;font-size:1.4rem}
.page-content p{margin-bottom:16px;line-height:1.85}
@media(max-width:768px){nav{gap:14px;font-size:.85rem}.hero h1{font-size:1.8rem}.page-header h1{font-size:1.6rem}.tools-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}.tool-icon{font-size:1.8rem}}
@media(max-width:480px){header .container{flex-direction:column;gap:10px}.tools-grid{grid-template-columns:1fr 1fr}}