:root{--primary:#6b21a8;--primary-dark:#581c87;--primary-light:#a855f7;--accent:#f59e0b;--accent-dark:#d97706;--bg:#fefef8;--card:#fff;--text:#1e1b2e;--text-light:#555;--border:#e8e0d0;--radius:14px;--shadow:0 3px 16px rgba(107,33,168,.07);--max-w:1100px;--nav-bg:#6b21a8}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Segoe UI',Roboto,Ubuntu,sans-serif;background:var(--bg);color:var(--text);line-height:1.7}
a{color:var(--primary-dark);text-decoration:none}a:hover{color:var(--accent)}
img{max-width:100%;height:auto}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}
.navbar{background:var(--nav-bg);position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(107,33,168,.15)}
.nav-inner{max-width:var(--max-w);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:62px}
.nav-logo{color:#fff;font-size:1.45rem;font-weight:900;letter-spacing:-.5px}
.nav-logo span{color:var(--accent)}
.nav-links{display:flex;gap:22px}
.nav-links a{color:rgba(255,255,255,.88);font-size:.92rem;font-weight:600;transition:all .2s;border-bottom:2px solid transparent;padding-bottom:2px}
.nav-links a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.hamburger{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}
.hero{background:linear-gradient(135deg,#6b21a8 0%,#7c3aed 40%,#f59e0b 100%);color:#fff;padding:70px 20px;text-align:center;position:relative;overflow:hidden}
.hero::after{content:'';position:absolute;top:-50%;right:-20%;width:400px;height:400px;background:rgba(245,158,11,.15);border-radius:50%}
.hero h1{font-size:2.5rem;font-weight:900;margin-bottom:14px;position:relative}
.hero p{font-size:1.08rem;opacity:.92;max-width:620px;margin:0 auto 30px;position:relative}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative}
.btn{display:inline-block;padding:13px 32px;border-radius:50px;font-weight:700;font-size:.93rem;transition:all .25s}
.btn-primary{background:var(--accent);color:#1e1b2e;box-shadow:0 4px 14px rgba(245,158,11,.35)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(245,158,11,.4)}
.btn-secondary{background:rgba(255,255,255,.15);color:#fff;border:2px solid rgba(255,255,255,.3);backdrop-filter:blur(4px)}
.btn-secondary:hover{background:rgba(255,255,255,.25);border-color:var(--accent)}
.section-title{font-size:1.7rem;font-weight:900;margin-bottom:26px;text-align:center;color:var(--primary-dark);padding-top:44px;position:relative}
.section-title::after{content:'';display:block;width:50px;height:4px;background:var(--accent);margin:10px auto 0;border-radius:4px}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:18px;padding-bottom:26px}
.tool-card{background:var(--card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:all .25s;border:2px solid transparent;display:block;color:var(--text)}
.tool-card:hover{transform:translateY(-5px);box-shadow:0 10px 30px rgba(107,33,168,.12);border-color:var(--accent)}
.tool-icon{font-size:2.2rem;display:block;margin-bottom:10px}
.tool-card h3{font-size:1.02rem;font-weight:700;margin-bottom:4px;color:var(--primary-dark)}
.tool-card p{font-size:.82rem;color:var(--text-light)}
.tool-page{max-width:var(--max-w);margin:0 auto;padding:20px}
.breadcrumb{font-size:.84rem;color:var(--text-light);margin-bottom:14px}
.breadcrumb a{color:var(--primary)}
.tool-page h1{font-size:1.85rem;font-weight:900;margin-bottom:8px;color:var(--primary-dark)}
.desc{color:var(--text-light);margin-bottom:22px}
.calc-box{background:var(--card);padding:28px;border-radius:var(--radius);box-shadow:var(--shadow);border:2px solid var(--border)}
.calc-box label{display:block;font-weight:700;margin-bottom:6px;font-size:.9rem;color:var(--primary-dark)}
.calc-box textarea,.calc-box input,.calc-box select{padding:12px 16px;border:2px solid var(--border);border-radius:var(--radius);font-size:.95rem;width:100%;margin-bottom:12px;font-family:inherit;resize:vertical;transition:border-color .2s}
.calc-box textarea:focus,.calc-box input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px rgba(107,33,168,.1)}
.calc-box button{background:var(--primary);color:#fff;border:none;padding:13px 36px;border-radius:50px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s;box-shadow:0 4px 12px rgba(107,33,168,.25)}
.calc-box button:hover{background:var(--primary-dark);transform:translateY(-1px)}
.result-box{margin-top:18px;padding:20px;background:var(--bg);border-radius:var(--radius);border-left:4px solid var(--accent);display:none;white-space:pre-wrap;font-family:inherit;line-height:1.8}
.result-box.show{display:block}
.article-page{max-width:800px;margin:0 auto;padding:20px}
.article-meta{display:flex;gap:16px;color:var(--text-light);font-size:.85rem;margin-bottom:22px}
.article-page h2{font-size:1.3rem;margin:28px 0 10px;color:var(--primary-dark);border-left:4px solid var(--accent);padding-left:12px}
.article-page p{margin-bottom:12px}
.article-page img{border-radius:var(--radius);margin:16px 0;width:100%}
.tool-mention{color:var(--accent-dark);font-weight:700}
.footer{background:var(--nav-bg);color:rgba(255,255,255,.85);padding:48px 20px 22px;margin-top:48px}
.footer-grid{max-width:var(--max-w);margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px}
.footer h4{color:var(--accent);margin-bottom:14px;font-weight:700}
.footer a{color:rgba(255,255,255,.6);font-size:.88rem;display:block;margin-bottom:8px;transition:color .2s}
.footer a:hover{color:var(--accent)}
.footer-bottom{text-align:center;margin-top:28px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:.82rem}
.static-page{max-width:800px;margin:0 auto;padding:20px}
.static-page h1{font-size:1.85rem;margin-bottom:20px;color:var(--primary-dark)}
.static-page h2{font-size:1.3rem;margin:28px 0 12px;color:var(--primary-dark)}
.static-page p,.static-page li{margin-bottom:11px;color:var(--text-light);line-height:1.8}
.static-page ul{padding-left:24px}
.tag{display:inline-block;padding:4px 12px;background:var(--accent);color:#fff;border-radius:50px;font-size:.75rem;font-weight:600;margin-right:6px}
@media(max-width:768px){.nav-links{display:none;position:absolute;top:62px;left:0;right:0;background:var(--nav-bg);flex-direction:column;padding:18px 20px;gap:14px;box-shadow:0 8px 20px rgba(0,0,0,.15)}.nav-links.open{display:flex}.hamburger{display:block}.hero h1{font-size:1.65rem}.tool-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}}