/* ================================================================
   FinCalc Pro - Modern Tech Design System v2
   ================================================================ */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --glass-bg: rgba(255,255,255,0.025);
  --glass-border: rgba(255,255,255,0.06);
  --glass-border-hover: rgba(255,255,255,0.12);
  --accent: #3b82f6;
  --accent-glow: rgba(59,130,246,0.4);
  --accent2: #06b6d4;
  --accent3: #8b5cf6;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --font: "Inter",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --max-width: 1200px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);line-height:1.7;min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-1;background:radial-gradient(ellipse 80% 50% at 50% -20%,rgba(59,130,246,0.12),transparent),radial-gradient(ellipse 60% 40% at 90% 80%,rgba(139,92,246,0.06),transparent);pointer-events:none}
body::after{content:"";position:fixed;inset:0;z-index:-1;background-image:radial-gradient(rgba(255,255,255,0.025) 1px,transparent 1px);background-size:40px 40px;pointer-events:none;opacity:0.5}
a{color:var(--accent);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--accent2)}
header{background:rgba(10,14,26,0.8);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid var(--glass-border);position:sticky;top:0;z-index:100}
.header-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:1.35rem;font-weight:800;color:var(--text-primary);display:flex;align-items:center;gap:10px;letter-spacing:-0.5px}
.logo:hover{color:var(--accent);text-decoration:none}
.logo svg{width:34px;height:34px;filter:drop-shadow(0 0 8px var(--accent-glow))}
nav{display:flex;gap:4px;align-items:center}
nav a{padding:8px 18px;border-radius:50px;font-weight:500;font-size:0.88rem;color:var(--text-secondary);transition:var(--transition)}
nav a:hover,nav a.active{color:var(--text-primary);background:rgba(59,130,246,0.1);text-decoration:none}
nav a.active{color:var(--accent)}
.hero{position:relative;padding:100px 24px 80px;text-align:center;overflow:hidden}
.hero::before{content:"";position:absolute;top:-50%;left:50%;transform:translateX(-50%);width:800px;height:800px;background:radial-gradient(circle,rgba(59,130,246,0.15) 0%,transparent 60%);pointer-events:none}
.hero h1{font-size:3.2rem;font-weight:800;line-height:1.15;letter-spacing:-1px;margin-bottom:20px;background:linear-gradient(135deg,#f1f5f9,#94a3b8 30%,#3b82f6 60%,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.15rem;color:var(--text-secondary);max-width:560px;margin:0 auto 36px}
.hero-cta{display:inline-flex;gap:14px;flex-wrap:wrap;justify-content:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-weight:600;font-size:0.95rem;cursor:pointer;transition:var(--transition);border:none;text-decoration:none}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 4px 20px rgba(59,130,246,0.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(59,130,246,0.5);color:#fff}
.btn-secondary{background:rgba(255,255,255,0.05);color:var(--text-primary);border:1px solid rgba(255,255,255,0.1);backdrop-filter:blur(10px)}
.btn-secondary:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.2);color:var(--text-primary);text-decoration:none}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
section{padding:72px 0;position:relative}
section h2{font-size:2rem;font-weight:700;text-align:center;margin-bottom:8px;letter-spacing:-0.5px}
section .section-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:48px;font-size:1.05rem}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:20px}
.tool-card{background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:var(--radius);padding:32px;transition:var(--transition);display:flex;flex-direction:column;gap:14px;position:relative;overflow:hidden}
.tool-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.1),transparent);opacity:0;transition:var(--transition)}
.tool-card:hover{border-color:var(--glass-border-hover);background:rgba(30,41,59,0.5);transform:translateY(-4px);box-shadow:var(--shadow-lg),0 0 40px rgba(59,130,246,0.08)}
.tool-card:hover::before{opacity:1}
.tool-card .icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center}
.tool-card .icon.blue{background:rgba(59,130,246,0.15);color:var(--accent)}
.tool-card .icon.green{background:rgba(16,185,129,0.15);color:var(--accent-green)}
.tool-card .icon.orange{background:rgba(245,158,11,0.15);color:var(--accent-amber)}
.tool-card .icon.purple{background:rgba(139,92,246,0.15);color:var(--accent3)}
.tool-card .icon.red{background:rgba(239,68,68,0.15);color:#ef4444}
.tool-card .icon.teal{background:rgba(6,182,212,0.15);color:var(--accent2)}
.tool-card h3{font-size:1.1rem;font-weight:700}
.tool-card p{color:var(--text-secondary);font-size:0.92rem;flex:1}
.tool-card .card-link{font-weight:600;font-size:0.88rem;color:var(--accent);display:flex;align-items:center;gap:6px;transition:var(--transition)}
.tool-card:hover .card-link{gap:10px}
.calc-page{max-width:800px;margin:0 auto;padding:48px 24px}
.calc-page h1{font-size:2rem;margin-bottom:6px;letter-spacing:-0.5px}
.calc-page .breadcrumb{color:var(--text-muted);margin-bottom:24px;font-size:0.88rem}
.calc-card{background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.form-group{margin-bottom:22px}
.form-group label{display:block;font-weight:600;margin-bottom:8px;font-size:0.82rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.5px}
.form-group .input-row{display:flex;gap:12px;align-items:center}
.form-group input,.form-group select{width:100%;padding:14px 16px;border:1px solid var(--glass-border);border-radius:var(--radius-sm);font-size:1rem;transition:var(--transition);background:rgba(255,255,255,0.03);color:var(--text-primary);font-family:var(--font)}
.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,0.15)}
.input-suffix{color:var(--text-muted);font-weight:500;font-size:0.9rem;min-width:40px}
.btn-calc{width:100%;padding:16px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border:none;border-radius:var(--radius-sm);font-size:1.05rem;font-weight:700;cursor:pointer;transition:var(--transition);box-shadow:0 4px 16px rgba(59,130,246,0.25);letter-spacing:0.3px}
.btn-calc:hover{box-shadow:0 6px 24px rgba(59,130,246,0.4);transform:translateY(-1px)}
.result{margin-top:28px;padding:24px;background:rgba(16,185,129,0.08);border:1px solid rgba(16,185,129,0.2);border-radius:var(--radius-sm);display:none}
.result.show{display:block}
.result h3{color:var(--accent-green);margin-bottom:8px;font-size:0.85rem;text-transform:uppercase;letter-spacing:0.5px}
.result .big-number{font-size:2.5rem;font-weight:800;color:var(--accent-green);letter-spacing:-0.5px}
.result .detail{color:var(--text-secondary);font-size:0.88rem;margin-top:6px}
.result-table{width:100%;border-collapse:collapse;margin-top:16px;font-size:0.85rem}
.result-table th,.result-table td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--glass-border)}
.result-table th{font-weight:600;color:var(--text-muted);text-transform:uppercase;font-size:0.72rem;letter-spacing:0.5px}
.ad-banner{background:rgba(255,255,255,0.02);border:1px dashed rgba(255,255,255,0.08);border-radius:var(--radius-sm);padding:20px;text-align:center;color:var(--text-muted);font-size:0.8rem;margin:24px 0;min-height:60px;display:flex;align-items:center;justify-content:center}
.ad-banner.inline{max-width:728px;margin:24px auto}
.affiliate-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin-top:24px}
.affiliate-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:24px;transition:var(--transition);backdrop-filter:blur(12px)}
.affiliate-card:hover{border-color:var(--accent-green);box-shadow:0 0 20px rgba(16,185,129,0.1)}
.affiliate-card h4{font-size:1rem;margin-bottom:6px;font-weight:700}
.affiliate-card .rating{color:var(--accent-amber);font-size:0.9rem;margin-bottom:6px}
.affiliate-card p{font-size:0.85rem;color:var(--text-secondary);margin:8px 0}
.affiliate-card .aff-link{display:inline-block;padding:10px 20px;background:linear-gradient(135deg,var(--accent-green),#059669);color:#fff;border-radius:50px;font-size:0.85rem;font-weight:600;transition:var(--transition)}
.affiliate-card .aff-link:hover{text-decoration:none;box-shadow:0 4px 16px rgba(16,185,129,0.3);color:#fff}
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}
.blog-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius);overflow:hidden;transition:var(--transition);backdrop-filter:blur(12px)}
.blog-card:hover{border-color:var(--glass-border-hover);transform:translateY(-4px);box-shadow:var(--shadow-lg),0 0 30px rgba(59,130,246,0.06)}
article h2{font-size:1.4rem!important;font-weight:700!important;margin-top:32px!important;margin-bottom:12px!important;text-align:left!important;color:var(--text-primary)!important}
article p{margin-bottom:14px}
article ol,article ul{margin-left:20px;margin-bottom:14px}
article li{margin-bottom:8px}
footer{background:rgba(10,14,26,0.6);border-top:1px solid var(--glass-border);padding:56px 24px 28px;margin-top:64px;backdrop-filter:blur(12px)}
.footer-inner{max-width:var(--max-width);margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:40px}
.footer-inner h4{margin-bottom:14px;font-size:0.78rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1.5px;font-weight:700}
.footer-inner a{display:block;font-size:0.9rem;margin-bottom:8px;color:var(--text-secondary)}
.footer-inner a:hover{color:var(--accent);text-decoration:none}
.copyright{text-align:center;padding-top:28px;margin-top:28px;border-top:1px solid var(--glass-border);color:var(--text-muted);font-size:0.82rem}
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.tool-card{animation:fadeInUp 0.5s ease backwards}
.tool-card:nth-child(1){animation-delay:0.05s}
.tool-card:nth-child(2){animation-delay:0.1s}
.tool-card:nth-child(3){animation-delay:0.15s}
.tool-card:nth-child(4){animation-delay:0.2s}
.tool-card:nth-child(5){animation-delay:0.25s}
.tool-card:nth-child(6){animation-delay:0.3s}
@media(max-width:768px){.hero h1{font-size:2rem}.hero{padding:64px 16px 48px}section{padding:48px 0}.tools-grid,.blog-grid,.affiliate-grid{grid-template-columns:1fr}nav{display:none}.calc-card{padding:20px}}
@media(max-width:480px){.hero h1{font-size:1.6rem}.result .big-number{font-size:1.8rem}}